7362 lines
251 KiB
C
7362 lines
251 KiB
C
/******************************************************************************
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* @file arm_math.h
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* @brief Public header file for CMSIS DSP Library
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* @version V1.6.0
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* @date 18. March 2019
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******************************************************************************/
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/*
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* Copyright (c) 2010-2019 Arm Limited or its affiliates. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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\mainpage CMSIS DSP Software Library
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*
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* Introduction
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* ------------
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*
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* This user manual describes the CMSIS DSP software library,
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* a suite of common signal processing functions for use on Cortex-M processor based devices.
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*
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* The library is divided into a number of functions each covering a specific category:
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* - Basic math functions
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* - Fast math functions
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* - Complex math functions
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* - Filters
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* - Matrix functions
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* - Transform functions
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* - Motor control functions
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* - Statistical functions
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* - Support functions
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* - Interpolation functions
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*
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* The library has separate functions for operating on 8-bit integers, 16-bit integers,
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* 32-bit integer and 32-bit floating-point values.
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*
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* Using the Library
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* ------------
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*
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* The library installer contains prebuilt versions of the libraries in the <code>Lib</code> folder.
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* - arm_cortexM7lfdp_math.lib (Cortex-M7, Little endian, Double Precision Floating Point Unit)
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* - arm_cortexM7bfdp_math.lib (Cortex-M7, Big endian, Double Precision Floating Point Unit)
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* - arm_cortexM7lfsp_math.lib (Cortex-M7, Little endian, Single Precision Floating Point Unit)
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* - arm_cortexM7bfsp_math.lib (Cortex-M7, Big endian and Single Precision Floating Point Unit on)
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* - arm_cortexM7l_math.lib (Cortex-M7, Little endian)
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* - arm_cortexM7b_math.lib (Cortex-M7, Big endian)
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* - arm_cortexM4lf_math.lib (Cortex-M4, Little endian, Floating Point Unit)
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* - arm_cortexM4bf_math.lib (Cortex-M4, Big endian, Floating Point Unit)
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* - arm_cortexM4l_math.lib (Cortex-M4, Little endian)
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* - arm_cortexM4b_math.lib (Cortex-M4, Big endian)
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* - arm_cortexM3l_math.lib (Cortex-M3, Little endian)
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* - arm_cortexM3b_math.lib (Cortex-M3, Big endian)
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* - arm_cortexM0l_math.lib (Cortex-M0 / Cortex-M0+, Little endian)
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* - arm_cortexM0b_math.lib (Cortex-M0 / Cortex-M0+, Big endian)
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* - arm_ARMv8MBLl_math.lib (Armv8-M Baseline, Little endian)
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* - arm_ARMv8MMLl_math.lib (Armv8-M Mainline, Little endian)
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* - arm_ARMv8MMLlfsp_math.lib (Armv8-M Mainline, Little endian, Single Precision Floating Point Unit)
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* - arm_ARMv8MMLld_math.lib (Armv8-M Mainline, Little endian, DSP instructions)
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* - arm_ARMv8MMLldfsp_math.lib (Armv8-M Mainline, Little endian, DSP instructions, Single Precision Floating Point Unit)
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*
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* The library functions are declared in the public file <code>arm_math.h</code> which is placed in the <code>Include</code> folder.
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* Simply include this file and link the appropriate library in the application and begin calling the library functions. The Library supports single
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* public header file <code> arm_math.h</code> for Cortex-M cores with little endian and big endian. Same header file will be used for floating point unit(FPU) variants.
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*
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*
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* Examples
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* --------
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*
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* The library ships with a number of examples which demonstrate how to use the library functions.
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*
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* Toolchain Support
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* ------------
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*
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* The library has been developed and tested with MDK version 5.14.0.0
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* The library is being tested in GCC and IAR toolchains and updates on this activity will be made available shortly.
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*
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* Building the Library
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* ------------
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*
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* The library installer contains a project file to rebuild libraries on MDK toolchain in the <code>CMSIS\\DSP\\Projects\\ARM</code> folder.
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* - arm_cortexM_math.uvprojx
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*
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*
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* The libraries can be built by opening the arm_cortexM_math.uvprojx project in MDK-ARM, selecting a specific target, and defining the optional preprocessor macros detailed above.
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*
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* Preprocessor Macros
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* ------------
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*
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* Each library project have different preprocessor macros.
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*
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* - ARM_MATH_BIG_ENDIAN:
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*
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* Define macro ARM_MATH_BIG_ENDIAN to build the library for big endian targets. By default library builds for little endian targets.
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*
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* - ARM_MATH_MATRIX_CHECK:
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*
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* Define macro ARM_MATH_MATRIX_CHECK for checking on the input and output sizes of matrices
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*
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* - ARM_MATH_ROUNDING:
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*
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* Define macro ARM_MATH_ROUNDING for rounding on support functions
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*
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* - ARM_MATH_LOOPUNROLL:
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*
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* Define macro ARM_MATH_LOOPUNROLL to enable manual loop unrolling in DSP functions
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*
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* - ARM_MATH_NEON:
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*
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* Define macro ARM_MATH_NEON to enable Neon versions of the DSP functions.
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* It is not enabled by default when Neon is available because performances are
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* dependent on the compiler and target architecture.
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*
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* - ARM_MATH_NEON_EXPERIMENTAL:
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*
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* Define macro ARM_MATH_NEON_EXPERIMENTAL to enable experimental Neon versions of
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* of some DSP functions. Experimental Neon versions currently do not have better
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* performances than the scalar versions.
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*
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* <hr>
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* CMSIS-DSP in ARM::CMSIS Pack
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* -----------------------------
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*
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* The following files relevant to CMSIS-DSP are present in the <b>ARM::CMSIS</b> Pack directories:
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* |File/Folder |Content |
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* |---------------------------------|------------------------------------------------------------------------|
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* |\b CMSIS\\Documentation\\DSP | This documentation |
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* |\b CMSIS\\DSP\\DSP_Lib_TestSuite | DSP_Lib test suite |
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* |\b CMSIS\\DSP\\Examples | Example projects demonstrating the usage of the library functions |
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* |\b CMSIS\\DSP\\Include | DSP_Lib include files |
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* |\b CMSIS\\DSP\\Lib | DSP_Lib binaries |
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* |\b CMSIS\\DSP\\Projects | Projects to rebuild DSP_Lib binaries |
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* |\b CMSIS\\DSP\\Source | DSP_Lib source files |
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*
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* <hr>
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* Revision History of CMSIS-DSP
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* ------------
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* Please refer to \ref ChangeLog_pg.
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*/
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/**
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* @defgroup groupMath Basic Math Functions
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*/
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/**
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* @defgroup groupFastMath Fast Math Functions
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* This set of functions provides a fast approximation to sine, cosine, and square root.
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* As compared to most of the other functions in the CMSIS math library, the fast math functions
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* operate on individual values and not arrays.
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* There are separate functions for Q15, Q31, and floating-point data.
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*
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*/
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/**
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* @defgroup groupCmplxMath Complex Math Functions
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* This set of functions operates on complex data vectors.
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* The data in the complex arrays is stored in an interleaved fashion
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* (real, imag, real, imag, ...).
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* In the API functions, the number of samples in a complex array refers
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* to the number of complex values; the array contains twice this number of
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* real values.
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*/
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/**
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* @defgroup groupFilters Filtering Functions
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*/
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/**
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* @defgroup groupMatrix Matrix Functions
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*
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* This set of functions provides basic matrix math operations.
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* The functions operate on matrix data structures. For example,
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* the type
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* definition for the floating-point matrix structure is shown
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* below:
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* <pre>
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* typedef struct
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* {
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* uint16_t numRows; // number of rows of the matrix.
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* uint16_t numCols; // number of columns of the matrix.
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* float32_t *pData; // points to the data of the matrix.
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* } arm_matrix_instance_f32;
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* </pre>
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* There are similar definitions for Q15 and Q31 data types.
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*
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* The structure specifies the size of the matrix and then points to
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* an array of data. The array is of size <code>numRows X numCols</code>
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* and the values are arranged in row order. That is, the
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* matrix element (i, j) is stored at:
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* <pre>
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* pData[i*numCols + j]
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* </pre>
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*
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* \par Init Functions
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* There is an associated initialization function for each type of matrix
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* data structure.
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* The initialization function sets the values of the internal structure fields.
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* Refer to \ref arm_mat_init_f32(), \ref arm_mat_init_q31() and \ref arm_mat_init_q15()
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* for floating-point, Q31 and Q15 types, respectively.
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*
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* \par
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* Use of the initialization function is optional. However, if initialization function is used
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* then the instance structure cannot be placed into a const data section.
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* To place the instance structure in a const data
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* section, manually initialize the data structure. For example:
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* <pre>
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* <code>arm_matrix_instance_f32 S = {nRows, nColumns, pData};</code>
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* <code>arm_matrix_instance_q31 S = {nRows, nColumns, pData};</code>
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* <code>arm_matrix_instance_q15 S = {nRows, nColumns, pData};</code>
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* </pre>
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* where <code>nRows</code> specifies the number of rows, <code>nColumns</code>
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* specifies the number of columns, and <code>pData</code> points to the
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* data array.
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*
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* \par Size Checking
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* By default all of the matrix functions perform size checking on the input and
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* output matrices. For example, the matrix addition function verifies that the
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* two input matrices and the output matrix all have the same number of rows and
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* columns. If the size check fails the functions return:
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* <pre>
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* ARM_MATH_SIZE_MISMATCH
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* </pre>
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* Otherwise the functions return
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* <pre>
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* ARM_MATH_SUCCESS
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* </pre>
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* There is some overhead associated with this matrix size checking.
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* The matrix size checking is enabled via the \#define
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* <pre>
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* ARM_MATH_MATRIX_CHECK
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* </pre>
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* within the library project settings. By default this macro is defined
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* and size checking is enabled. By changing the project settings and
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* undefining this macro size checking is eliminated and the functions
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* run a bit faster. With size checking disabled the functions always
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* return <code>ARM_MATH_SUCCESS</code>.
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*/
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/**
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* @defgroup groupTransforms Transform Functions
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*/
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/**
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* @defgroup groupController Controller Functions
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*/
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/**
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* @defgroup groupStats Statistics Functions
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*/
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/**
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* @defgroup groupSupport Support Functions
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*/
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/**
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* @defgroup groupInterpolation Interpolation Functions
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* These functions perform 1- and 2-dimensional interpolation of data.
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* Linear interpolation is used for 1-dimensional data and
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* bilinear interpolation is used for 2-dimensional data.
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*/
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/**
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* @defgroup groupExamples Examples
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*/
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#ifndef _ARM_MATH_H
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#define _ARM_MATH_H
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/* Compiler specific diagnostic adjustment */
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#if defined ( __CC_ARM )
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#elif defined ( __ARMCC_VERSION ) && ( __ARMCC_VERSION >= 6010050 )
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#elif defined ( __GNUC__ )
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wsign-conversion"
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#pragma GCC diagnostic ignored "-Wconversion"
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#elif defined ( __ICCARM__ )
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#elif defined ( __TI_ARM__ )
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#elif defined ( __CSMC__ )
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#elif defined ( __TASKING__ )
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#elif defined ( _MSC_VER )
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#else
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#error Unknown compiler
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#endif
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/* Included for instrinsics definitions */
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#if !defined ( _MSC_VER )
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#include "cmsis_compiler.h"
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#else
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#include <stdint.h>
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#define __STATIC_FORCEINLINE static __forceinline
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#define __ALIGNED(x) __declspec(align(x))
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#define LOW_OPTIMIZATION_ENTER
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#define LOW_OPTIMIZATION_EXIT
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#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
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#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
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#endif
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#include "string.h"
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#include "math.h"
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#include "float.h"
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/* evaluate ARM DSP feature */
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#if (defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1))
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#define ARM_MATH_DSP 1
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#endif
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#if defined(__ARM_NEON)
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#include <arm_neon.h>
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* @brief Macros required for reciprocal calculation in Normalized LMS
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*/
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#define DELTA_Q31 (0x100)
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#define DELTA_Q15 0x5
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#define INDEX_MASK 0x0000003F
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#ifndef PI
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#define PI 3.14159265358979f
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#endif
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/**
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* @brief Macros required for SINE and COSINE Fast math approximations
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*/
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#define FAST_MATH_TABLE_SIZE 512
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#define FAST_MATH_Q31_SHIFT (32 - 10)
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#define FAST_MATH_Q15_SHIFT (16 - 10)
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#define CONTROLLER_Q31_SHIFT (32 - 9)
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#define TABLE_SPACING_Q31 0x400000
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#define TABLE_SPACING_Q15 0x80
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/**
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* @brief Macros required for SINE and COSINE Controller functions
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*/
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/* 1.31(q31) Fixed value of 2/360 */
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/* -1 to +1 is divided into 360 values so total spacing is (2/360) */
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#define INPUT_SPACING 0xB60B61
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/**
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* @brief Error status returned by some functions in the library.
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*/
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typedef enum
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{
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ARM_MATH_SUCCESS = 0, /**< No error */
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ARM_MATH_ARGUMENT_ERROR = -1, /**< One or more arguments are incorrect */
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ARM_MATH_LENGTH_ERROR = -2, /**< Length of data buffer is incorrect */
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ARM_MATH_SIZE_MISMATCH = -3, /**< Size of matrices is not compatible with the operation */
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ARM_MATH_NANINF = -4, /**< Not-a-number (NaN) or infinity is generated */
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ARM_MATH_SINGULAR = -5, /**< Input matrix is singular and cannot be inverted */
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ARM_MATH_TEST_FAILURE = -6 /**< Test Failed */
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} arm_status;
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/**
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* @brief 8-bit fractional data type in 1.7 format.
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*/
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typedef int8_t q7_t;
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/**
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* @brief 16-bit fractional data type in 1.15 format.
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*/
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typedef int16_t q15_t;
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/**
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* @brief 32-bit fractional data type in 1.31 format.
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*/
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typedef int32_t q31_t;
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/**
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* @brief 64-bit fractional data type in 1.63 format.
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*/
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typedef int64_t q63_t;
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/**
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* @brief 32-bit floating-point type definition.
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*/
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typedef float float32_t;
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/**
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* @brief 64-bit floating-point type definition.
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*/
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typedef double float64_t;
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/**
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@brief definition to read/write two 16 bit values.
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@deprecated
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*/
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#if defined ( __CC_ARM )
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#define __SIMD32_TYPE int32_t __packed
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#elif defined ( __ARMCC_VERSION ) && ( __ARMCC_VERSION >= 6010050 )
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#define __SIMD32_TYPE int32_t
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#elif defined ( __GNUC__ )
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#define __SIMD32_TYPE int32_t
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#elif defined ( __ICCARM__ )
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#define __SIMD32_TYPE int32_t __packed
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#elif defined ( __TI_ARM__ )
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#define __SIMD32_TYPE int32_t
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#elif defined ( __CSMC__ )
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#define __SIMD32_TYPE int32_t
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#elif defined ( __TASKING__ )
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#define __SIMD32_TYPE __un(aligned) int32_t
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#elif defined(_MSC_VER )
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#define __SIMD32_TYPE int32_t
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#else
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#error Unknown compiler
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#endif
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#define __SIMD32(addr) (*(__SIMD32_TYPE **) & (addr))
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#define __SIMD32_CONST(addr) ( (__SIMD32_TYPE * ) (addr))
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#define _SIMD32_OFFSET(addr) (*(__SIMD32_TYPE * ) (addr))
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#define __SIMD64(addr) (*( int64_t **) & (addr))
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/* SIMD replacement */
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/**
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@brief Read 2 Q15 from Q15 pointer.
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@param[in] pQ15 points to input value
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@return Q31 value
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*/
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__STATIC_FORCEINLINE q31_t read_q15x2 (
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q15_t * pQ15)
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{
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q31_t val;
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memcpy (&val, pQ15, 4);
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return (val);
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}
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/**
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@brief Read 2 Q15 from Q15 pointer and increment pointer afterwards.
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@param[in] pQ15 points to input value
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@return Q31 value
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*/
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__STATIC_FORCEINLINE q31_t read_q15x2_ia (
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q15_t ** pQ15)
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{
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q31_t val;
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memcpy (&val, *pQ15, 4);
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*pQ15 += 2;
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return (val);
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}
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/**
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@brief Read 2 Q15 from Q15 pointer and decrement pointer afterwards.
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@param[in] pQ15 points to input value
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@return Q31 value
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*/
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__STATIC_FORCEINLINE q31_t read_q15x2_da (
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q15_t ** pQ15)
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{
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q31_t val;
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memcpy (&val, *pQ15, 4);
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*pQ15 -= 2;
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return (val);
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}
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/**
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@brief Write 2 Q15 to Q15 pointer and increment pointer afterwards.
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@param[in] pQ15 points to input value
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@param[in] value Q31 value
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@return none
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*/
|
|
__STATIC_FORCEINLINE void write_q15x2_ia (
|
|
q15_t ** pQ15,
|
|
q31_t value)
|
|
{
|
|
q31_t val = value;
|
|
|
|
memcpy (*pQ15, &val, 4);
|
|
*pQ15 += 2;
|
|
}
|
|
|
|
/**
|
|
@brief Write 2 Q15 to Q15 pointer.
|
|
@param[in] pQ15 points to input value
|
|
@param[in] value Q31 value
|
|
@return none
|
|
*/
|
|
__STATIC_FORCEINLINE void write_q15x2 (
|
|
q15_t * pQ15,
|
|
q31_t value)
|
|
{
|
|
q31_t val = value;
|
|
|
|
memcpy (pQ15, &val, 4);
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Read 4 Q7 from Q7 pointer and increment pointer afterwards.
|
|
@param[in] pQ7 points to input value
|
|
@return Q31 value
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t read_q7x4_ia (
|
|
q7_t ** pQ7)
|
|
{
|
|
q31_t val;
|
|
|
|
memcpy (&val, *pQ7, 4);
|
|
*pQ7 += 4;
|
|
|
|
return (val);
|
|
}
|
|
|
|
/**
|
|
@brief Read 4 Q7 from Q7 pointer and decrement pointer afterwards.
|
|
@param[in] pQ7 points to input value
|
|
@return Q31 value
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t read_q7x4_da (
|
|
q7_t ** pQ7)
|
|
{
|
|
q31_t val;
|
|
|
|
memcpy (&val, *pQ7, 4);
|
|
*pQ7 -= 4;
|
|
|
|
return (val);
|
|
}
|
|
|
|
/**
|
|
@brief Write 4 Q7 to Q7 pointer and increment pointer afterwards.
|
|
@param[in] pQ7 points to input value
|
|
@param[in] value Q31 value
|
|
@return none
|
|
*/
|
|
__STATIC_FORCEINLINE void write_q7x4_ia (
|
|
q7_t ** pQ7,
|
|
q31_t value)
|
|
{
|
|
q31_t val = value;
|
|
|
|
memcpy (*pQ7, &val, 4);
|
|
*pQ7 += 4;
|
|
}
|
|
|
|
/*
|
|
|
|
Normally those kind of definitions are in a compiler file
|
|
in Core or Core_A.
|
|
|
|
But for MSVC compiler it is a bit special. The goal is very specific
|
|
to CMSIS-DSP and only to allow the use of this library from other
|
|
systems like Python or Matlab.
|
|
|
|
MSVC is not going to be used to cross-compile to ARM. So, having a MSVC
|
|
compiler file in Core or Core_A would not make sense.
|
|
|
|
*/
|
|
#if defined ( _MSC_VER )
|
|
__STATIC_FORCEINLINE uint8_t __CLZ(uint32_t data)
|
|
{
|
|
if (data == 0U) { return 32U; }
|
|
|
|
uint32_t count = 0U;
|
|
uint32_t mask = 0x80000000U;
|
|
|
|
while ((data & mask) == 0U)
|
|
{
|
|
count += 1U;
|
|
mask = mask >> 1U;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
__STATIC_FORCEINLINE int32_t __SSAT(int32_t val, uint32_t sat)
|
|
{
|
|
if ((sat >= 1U) && (sat <= 32U))
|
|
{
|
|
const int32_t max = (int32_t)((1U << (sat - 1U)) - 1U);
|
|
const int32_t min = -1 - max ;
|
|
if (val > max)
|
|
{
|
|
return max;
|
|
}
|
|
else if (val < min)
|
|
{
|
|
return min;
|
|
}
|
|
}
|
|
return val;
|
|
}
|
|
|
|
__STATIC_FORCEINLINE uint32_t __USAT(int32_t val, uint32_t sat)
|
|
{
|
|
if (sat <= 31U)
|
|
{
|
|
const uint32_t max = ((1U << sat) - 1U);
|
|
if (val > (int32_t)max)
|
|
{
|
|
return max;
|
|
}
|
|
else if (val < 0)
|
|
{
|
|
return 0U;
|
|
}
|
|
}
|
|
return (uint32_t)val;
|
|
}
|
|
#endif
|
|
|
|
#ifndef ARM_MATH_DSP
|
|
/**
|
|
* @brief definition to pack two 16 bit values.
|
|
*/
|
|
#define __PKHBT(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0x0000FFFF) | \
|
|
(((int32_t)(ARG2) << ARG3) & (int32_t)0xFFFF0000) )
|
|
#define __PKHTB(ARG1, ARG2, ARG3) ( (((int32_t)(ARG1) << 0) & (int32_t)0xFFFF0000) | \
|
|
(((int32_t)(ARG2) >> ARG3) & (int32_t)0x0000FFFF) )
|
|
#endif
|
|
|
|
/**
|
|
* @brief definition to pack four 8 bit values.
|
|
*/
|
|
#ifndef ARM_MATH_BIG_ENDIAN
|
|
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v0) << 0) & (int32_t)0x000000FF) | \
|
|
(((int32_t)(v1) << 8) & (int32_t)0x0000FF00) | \
|
|
(((int32_t)(v2) << 16) & (int32_t)0x00FF0000) | \
|
|
(((int32_t)(v3) << 24) & (int32_t)0xFF000000) )
|
|
#else
|
|
#define __PACKq7(v0,v1,v2,v3) ( (((int32_t)(v3) << 0) & (int32_t)0x000000FF) | \
|
|
(((int32_t)(v2) << 8) & (int32_t)0x0000FF00) | \
|
|
(((int32_t)(v1) << 16) & (int32_t)0x00FF0000) | \
|
|
(((int32_t)(v0) << 24) & (int32_t)0xFF000000) )
|
|
#endif
|
|
|
|
|
|
/**
|
|
* @brief Clips Q63 to Q31 values.
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t clip_q63_to_q31(
|
|
q63_t x)
|
|
{
|
|
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
|
|
((0x7FFFFFFF ^ ((q31_t) (x >> 63)))) : (q31_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q63 to Q15 values.
|
|
*/
|
|
__STATIC_FORCEINLINE q15_t clip_q63_to_q15(
|
|
q63_t x)
|
|
{
|
|
return ((q31_t) (x >> 32) != ((q31_t) x >> 31)) ?
|
|
((0x7FFF ^ ((q15_t) (x >> 63)))) : (q15_t) (x >> 15);
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q31 to Q7 values.
|
|
*/
|
|
__STATIC_FORCEINLINE q7_t clip_q31_to_q7(
|
|
q31_t x)
|
|
{
|
|
return ((q31_t) (x >> 24) != ((q31_t) x >> 23)) ?
|
|
((0x7F ^ ((q7_t) (x >> 31)))) : (q7_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Clips Q31 to Q15 values.
|
|
*/
|
|
__STATIC_FORCEINLINE q15_t clip_q31_to_q15(
|
|
q31_t x)
|
|
{
|
|
return ((q31_t) (x >> 16) != ((q31_t) x >> 15)) ?
|
|
((0x7FFF ^ ((q15_t) (x >> 31)))) : (q15_t) x;
|
|
}
|
|
|
|
/**
|
|
* @brief Multiplies 32 X 64 and returns 32 bit result in 2.30 format.
|
|
*/
|
|
__STATIC_FORCEINLINE q63_t mult32x64(
|
|
q63_t x,
|
|
q31_t y)
|
|
{
|
|
return ((((q63_t) (x & 0x00000000FFFFFFFF) * y) >> 32) +
|
|
(((q63_t) (x >> 32) * y) ) );
|
|
}
|
|
|
|
/**
|
|
* @brief Function to Calculates 1/in (reciprocal) value of Q31 Data type.
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t arm_recip_q31(
|
|
q31_t in,
|
|
q31_t * dst,
|
|
const q31_t * pRecipTable)
|
|
{
|
|
q31_t out;
|
|
uint32_t tempVal;
|
|
uint32_t index, i;
|
|
uint32_t signBits;
|
|
|
|
if (in > 0)
|
|
{
|
|
signBits = ((uint32_t) (__CLZ( in) - 1));
|
|
}
|
|
else
|
|
{
|
|
signBits = ((uint32_t) (__CLZ(-in) - 1));
|
|
}
|
|
|
|
/* Convert input sample to 1.31 format */
|
|
in = (in << signBits);
|
|
|
|
/* calculation of index for initial approximated Val */
|
|
index = (uint32_t)(in >> 24);
|
|
index = (index & INDEX_MASK);
|
|
|
|
/* 1.31 with exp 1 */
|
|
out = pRecipTable[index];
|
|
|
|
/* calculation of reciprocal value */
|
|
/* running approximation for two iterations */
|
|
for (i = 0U; i < 2U; i++)
|
|
{
|
|
tempVal = (uint32_t) (((q63_t) in * out) >> 31);
|
|
tempVal = 0x7FFFFFFFu - tempVal;
|
|
/* 1.31 with exp 1 */
|
|
/* out = (q31_t) (((q63_t) out * tempVal) >> 30); */
|
|
out = clip_q63_to_q31(((q63_t) out * tempVal) >> 30);
|
|
}
|
|
|
|
/* write output */
|
|
*dst = out;
|
|
|
|
/* return num of signbits of out = 1/in value */
|
|
return (signBits + 1U);
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Function to Calculates 1/in (reciprocal) value of Q15 Data type.
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t arm_recip_q15(
|
|
q15_t in,
|
|
q15_t * dst,
|
|
const q15_t * pRecipTable)
|
|
{
|
|
q15_t out = 0;
|
|
uint32_t tempVal = 0;
|
|
uint32_t index = 0, i = 0;
|
|
uint32_t signBits = 0;
|
|
|
|
if (in > 0)
|
|
{
|
|
signBits = ((uint32_t)(__CLZ( in) - 17));
|
|
}
|
|
else
|
|
{
|
|
signBits = ((uint32_t)(__CLZ(-in) - 17));
|
|
}
|
|
|
|
/* Convert input sample to 1.15 format */
|
|
in = (in << signBits);
|
|
|
|
/* calculation of index for initial approximated Val */
|
|
index = (uint32_t)(in >> 8);
|
|
index = (index & INDEX_MASK);
|
|
|
|
/* 1.15 with exp 1 */
|
|
out = pRecipTable[index];
|
|
|
|
/* calculation of reciprocal value */
|
|
/* running approximation for two iterations */
|
|
for (i = 0U; i < 2U; i++)
|
|
{
|
|
tempVal = (uint32_t) (((q31_t) in * out) >> 15);
|
|
tempVal = 0x7FFFu - tempVal;
|
|
/* 1.15 with exp 1 */
|
|
out = (q15_t) (((q31_t) out * tempVal) >> 14);
|
|
/* out = clip_q31_to_q15(((q31_t) out * tempVal) >> 14); */
|
|
}
|
|
|
|
/* write output */
|
|
*dst = out;
|
|
|
|
/* return num of signbits of out = 1/in value */
|
|
return (signBits + 1);
|
|
}
|
|
|
|
#if defined(ARM_MATH_NEON)
|
|
|
|
static inline float32x4_t __arm_vec_sqrt_f32_neon(float32x4_t x)
|
|
{
|
|
float32x4_t x1 = vmaxq_f32(x, vdupq_n_f32(FLT_MIN));
|
|
float32x4_t e = vrsqrteq_f32(x1);
|
|
e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(x1, e), e), e);
|
|
e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(x1, e), e), e);
|
|
return vmulq_f32(x, e);
|
|
}
|
|
|
|
static inline int16x8_t __arm_vec_sqrt_q15_neon(int16x8_t vec)
|
|
{
|
|
float32x4_t tempF;
|
|
int32x4_t tempHI,tempLO;
|
|
|
|
tempLO = vmovl_s16(vget_low_s16(vec));
|
|
tempF = vcvtq_n_f32_s32(tempLO,15);
|
|
tempF = __arm_vec_sqrt_f32_neon(tempF);
|
|
tempLO = vcvtq_n_s32_f32(tempF,15);
|
|
|
|
tempHI = vmovl_s16(vget_high_s16(vec));
|
|
tempF = vcvtq_n_f32_s32(tempHI,15);
|
|
tempF = __arm_vec_sqrt_f32_neon(tempF);
|
|
tempHI = vcvtq_n_s32_f32(tempF,15);
|
|
|
|
return(vcombine_s16(vqmovn_s32(tempLO),vqmovn_s32(tempHI)));
|
|
}
|
|
|
|
static inline int32x4_t __arm_vec_sqrt_q31_neon(int32x4_t vec)
|
|
{
|
|
float32x4_t temp;
|
|
|
|
temp = vcvtq_n_f32_s32(vec,31);
|
|
temp = __arm_vec_sqrt_f32_neon(temp);
|
|
return(vcvtq_n_s32_f32(temp,31));
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* @brief C custom defined intrinsic functions
|
|
*/
|
|
#if !defined (ARM_MATH_DSP)
|
|
|
|
/*
|
|
* @brief C custom defined QADD8
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QADD8(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s, t, u;
|
|
|
|
r = __SSAT(((((q31_t)x << 24) >> 24) + (((q31_t)y << 24) >> 24)), 8) & (int32_t)0x000000FF;
|
|
s = __SSAT(((((q31_t)x << 16) >> 24) + (((q31_t)y << 16) >> 24)), 8) & (int32_t)0x000000FF;
|
|
t = __SSAT(((((q31_t)x << 8) >> 24) + (((q31_t)y << 8) >> 24)), 8) & (int32_t)0x000000FF;
|
|
u = __SSAT(((((q31_t)x ) >> 24) + (((q31_t)y ) >> 24)), 8) & (int32_t)0x000000FF;
|
|
|
|
return ((uint32_t)((u << 24) | (t << 16) | (s << 8) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QSUB8
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QSUB8(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s, t, u;
|
|
|
|
r = __SSAT(((((q31_t)x << 24) >> 24) - (((q31_t)y << 24) >> 24)), 8) & (int32_t)0x000000FF;
|
|
s = __SSAT(((((q31_t)x << 16) >> 24) - (((q31_t)y << 16) >> 24)), 8) & (int32_t)0x000000FF;
|
|
t = __SSAT(((((q31_t)x << 8) >> 24) - (((q31_t)y << 8) >> 24)), 8) & (int32_t)0x000000FF;
|
|
u = __SSAT(((((q31_t)x ) >> 24) - (((q31_t)y ) >> 24)), 8) & (int32_t)0x000000FF;
|
|
|
|
return ((uint32_t)((u << 24) | (t << 16) | (s << 8) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QADD16
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QADD16(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
/* q31_t r, s; without initialisation 'arm_offset_q15 test' fails but 'intrinsic' tests pass! for armCC */
|
|
q31_t r = 0, s = 0;
|
|
|
|
r = __SSAT(((((q31_t)x << 16) >> 16) + (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
s = __SSAT(((((q31_t)x ) >> 16) + (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SHADD16
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SHADD16(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = (((((q31_t)x << 16) >> 16) + (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
s = (((((q31_t)x ) >> 16) + (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QSUB16
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QSUB16(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = __SSAT(((((q31_t)x << 16) >> 16) - (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
s = __SSAT(((((q31_t)x ) >> 16) - (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SHSUB16
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SHSUB16(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = (((((q31_t)x << 16) >> 16) - (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
s = (((((q31_t)x ) >> 16) - (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QASX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QASX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = __SSAT(((((q31_t)x << 16) >> 16) - (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
s = __SSAT(((((q31_t)x ) >> 16) + (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SHASX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SHASX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = (((((q31_t)x << 16) >> 16) - (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
s = (((((q31_t)x ) >> 16) + (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QSAX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __QSAX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = __SSAT(((((q31_t)x << 16) >> 16) + (((q31_t)y ) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
s = __SSAT(((((q31_t)x ) >> 16) - (((q31_t)y << 16) >> 16)), 16) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SHSAX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SHSAX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
q31_t r, s;
|
|
|
|
r = (((((q31_t)x << 16) >> 16) + (((q31_t)y ) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
s = (((((q31_t)x ) >> 16) - (((q31_t)y << 16) >> 16)) >> 1) & (int32_t)0x0000FFFF;
|
|
|
|
return ((uint32_t)((s << 16) | (r )));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMUSDX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMUSDX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) -
|
|
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) ));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMUADX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMUADX(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QADD
|
|
*/
|
|
__STATIC_FORCEINLINE int32_t __QADD(
|
|
int32_t x,
|
|
int32_t y)
|
|
{
|
|
return ((int32_t)(clip_q63_to_q31((q63_t)x + (q31_t)y)));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined QSUB
|
|
*/
|
|
__STATIC_FORCEINLINE int32_t __QSUB(
|
|
int32_t x,
|
|
int32_t y)
|
|
{
|
|
return ((int32_t)(clip_q63_to_q31((q63_t)x - (q31_t)y)));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMLAD
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMLAD(
|
|
uint32_t x,
|
|
uint32_t y,
|
|
uint32_t sum)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) +
|
|
( ((q31_t)sum ) ) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMLADX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMLADX(
|
|
uint32_t x,
|
|
uint32_t y,
|
|
uint32_t sum)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
( ((q31_t)sum ) ) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMLSDX
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMLSDX(
|
|
uint32_t x,
|
|
uint32_t y,
|
|
uint32_t sum)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) -
|
|
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
( ((q31_t)sum ) ) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMLALD
|
|
*/
|
|
__STATIC_FORCEINLINE uint64_t __SMLALD(
|
|
uint32_t x,
|
|
uint32_t y,
|
|
uint64_t sum)
|
|
{
|
|
/* return (sum + ((q15_t) (x >> 16) * (q15_t) (y >> 16)) + ((q15_t) x * (q15_t) y)); */
|
|
return ((uint64_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) +
|
|
( ((q63_t)sum ) ) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMLALDX
|
|
*/
|
|
__STATIC_FORCEINLINE uint64_t __SMLALDX(
|
|
uint32_t x,
|
|
uint32_t y,
|
|
uint64_t sum)
|
|
{
|
|
/* return (sum + ((q15_t) (x >> 16) * (q15_t) y)) + ((q15_t) x * (q15_t) (y >> 16)); */
|
|
return ((uint64_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y ) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
( ((q63_t)sum ) ) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMUAD
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMUAD(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) +
|
|
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SMUSD
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SMUSD(
|
|
uint32_t x,
|
|
uint32_t y)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 16) >> 16) * (((q31_t)y << 16) >> 16)) -
|
|
((((q31_t)x ) >> 16) * (((q31_t)y ) >> 16)) ));
|
|
}
|
|
|
|
|
|
/*
|
|
* @brief C custom defined SXTB16
|
|
*/
|
|
__STATIC_FORCEINLINE uint32_t __SXTB16(
|
|
uint32_t x)
|
|
{
|
|
return ((uint32_t)(((((q31_t)x << 24) >> 24) & (q31_t)0x0000FFFF) |
|
|
((((q31_t)x << 8) >> 8) & (q31_t)0xFFFF0000) ));
|
|
}
|
|
|
|
/*
|
|
* @brief C custom defined SMMLA
|
|
*/
|
|
__STATIC_FORCEINLINE int32_t __SMMLA(
|
|
int32_t x,
|
|
int32_t y,
|
|
int32_t sum)
|
|
{
|
|
return (sum + (int32_t) (((int64_t) x * y) >> 32));
|
|
}
|
|
|
|
#endif /* !defined (ARM_MATH_DSP) */
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q7 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q7_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
const q7_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
} arm_fir_instance_q7;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
const q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
} arm_fir_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
const q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
} arm_fir_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of filter coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
const float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
} arm_fir_instance_f32;
|
|
|
|
/**
|
|
* @brief Processing function for the Q7 FIR filter.
|
|
* @param[in] S points to an instance of the Q7 FIR filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_q7(
|
|
const arm_fir_instance_q7 * S,
|
|
const q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q7 FIR filter.
|
|
* @param[in,out] S points to an instance of the Q7 FIR structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed.
|
|
*/
|
|
void arm_fir_init_q7(
|
|
arm_fir_instance_q7 * S,
|
|
uint16_t numTaps,
|
|
const q7_t * pCoeffs,
|
|
q7_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR filter.
|
|
* @param[in] S points to an instance of the Q15 FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_q15(
|
|
const arm_fir_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the fast Q15 FIR filter (fast version).
|
|
* @param[in] S points to an instance of the Q15 FIR filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_fast_q15(
|
|
const arm_fir_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR filter.
|
|
* @param[in,out] S points to an instance of the Q15 FIR filter structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter. Must be even and greater than or equal to 4.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SUCCESS</code> if initialization was successful or
|
|
* <code>ARM_MATH_ARGUMENT_ERROR</code> if <code>numTaps</code> is not a supported value.
|
|
*/
|
|
arm_status arm_fir_init_q15(
|
|
arm_fir_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR filter.
|
|
* @param[in] S points to an instance of the Q31 FIR filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_q31(
|
|
const arm_fir_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the fast Q31 FIR filter (fast version).
|
|
* @param[in] S points to an instance of the Q31 FIR filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_fast_q31(
|
|
const arm_fir_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR filter.
|
|
* @param[in,out] S points to an instance of the Q31 FIR structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
*/
|
|
void arm_fir_init_q31(
|
|
arm_fir_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR filter.
|
|
* @param[in] S points to an instance of the floating-point FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_f32(
|
|
const arm_fir_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR filter.
|
|
* @param[in,out] S points to an instance of the floating-point FIR filter structure.
|
|
* @param[in] numTaps Number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of samples that are processed at a time.
|
|
*/
|
|
void arm_fir_init_f32(
|
|
arm_fir_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
int8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q15_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
const q15_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
int8_t postShift; /**< Additional shift, in bits, applied to each output sample. */
|
|
} arm_biquad_casd_df1_inst_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q31_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
const q31_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
uint8_t postShift; /**< Additional shift, in bits, applied to each output sample. */
|
|
} arm_biquad_casd_df1_inst_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< Points to the array of state coefficients. The array is of length 4*numStages. */
|
|
const float32_t *pCoeffs; /**< Points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_casd_df1_inst_f32;
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 Biquad cascade filter.
|
|
* @param[in] S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df1_q15(
|
|
const arm_biquad_casd_df1_inst_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] postShift Shift to be applied to the output. Varies according to the coefficients format
|
|
*/
|
|
void arm_biquad_cascade_df1_init_q15(
|
|
arm_biquad_casd_df1_inst_q15 * S,
|
|
uint8_t numStages,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
int8_t postShift);
|
|
|
|
/**
|
|
* @brief Fast but less precise processing function for the Q15 Biquad cascade filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] S points to an instance of the Q15 Biquad cascade structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df1_fast_q15(
|
|
const arm_biquad_casd_df1_inst_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 Biquad cascade filter
|
|
* @param[in] S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df1_q31(
|
|
const arm_biquad_casd_df1_inst_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Fast but less precise processing function for the Q31 Biquad cascade filter for Cortex-M3 and Cortex-M4.
|
|
* @param[in] S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df1_fast_q31(
|
|
const arm_biquad_casd_df1_inst_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the Q31 Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] postShift Shift to be applied to the output. Varies according to the coefficients format
|
|
*/
|
|
void arm_biquad_cascade_df1_init_q31(
|
|
arm_biquad_casd_df1_inst_q31 * S,
|
|
uint8_t numStages,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
int8_t postShift);
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point Biquad cascade filter.
|
|
* @param[in] S points to an instance of the floating-point Biquad cascade structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df1_f32(
|
|
const arm_biquad_casd_df1_inst_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the floating-point Biquad cascade structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
*/
|
|
void arm_biquad_cascade_df1_init_f32(
|
|
arm_biquad_casd_df1_inst_f32 * S,
|
|
uint8_t numStages,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point matrix structure.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
float32_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point matrix structure.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
float64_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_f64;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 matrix structure.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
q15_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 matrix structure.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows of the matrix. */
|
|
uint16_t numCols; /**< number of columns of the matrix. */
|
|
q31_t *pData; /**< points to the data of the matrix. */
|
|
} arm_matrix_instance_q31;
|
|
|
|
/**
|
|
* @brief Floating-point matrix addition.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_add_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix addition.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_add_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix addition.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_add_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point, complex, matrix multiplication.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_cmplx_mult_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15, complex, matrix multiplication.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_cmplx_mult_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pScratch);
|
|
|
|
/**
|
|
* @brief Q31, complex, matrix multiplication.
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_cmplx_mult_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point matrix transpose.
|
|
* @param[in] pSrc points to the input matrix
|
|
* @param[out] pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_trans_f32(
|
|
const arm_matrix_instance_f32 * pSrc,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix transpose.
|
|
* @param[in] pSrc points to the input matrix
|
|
* @param[out] pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_trans_q15(
|
|
const arm_matrix_instance_q15 * pSrc,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix transpose.
|
|
* @param[in] pSrc points to the input matrix
|
|
* @param[out] pDst points to the output matrix
|
|
* @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
|
|
* or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_trans_q31(
|
|
const arm_matrix_instance_q31 * pSrc,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point matrix multiplication
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_mult_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix multiplication
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @param[in] pState points to the array for storing intermediate results
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_mult_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pState);
|
|
|
|
/**
|
|
* @brief Q15 matrix multiplication (fast variant) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @param[in] pState points to the array for storing intermediate results
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_mult_fast_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst,
|
|
q15_t * pState);
|
|
|
|
/**
|
|
* @brief Q31 matrix multiplication
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_mult_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix multiplication (fast variant) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_mult_fast_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point matrix subtraction
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_sub_f32(
|
|
const arm_matrix_instance_f32 * pSrcA,
|
|
const arm_matrix_instance_f32 * pSrcB,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix subtraction
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_sub_q15(
|
|
const arm_matrix_instance_q15 * pSrcA,
|
|
const arm_matrix_instance_q15 * pSrcB,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix subtraction
|
|
* @param[in] pSrcA points to the first input matrix structure
|
|
* @param[in] pSrcB points to the second input matrix structure
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_sub_q31(
|
|
const arm_matrix_instance_q31 * pSrcA,
|
|
const arm_matrix_instance_q31 * pSrcB,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Floating-point matrix scaling.
|
|
* @param[in] pSrc points to the input matrix
|
|
* @param[in] scale scale factor
|
|
* @param[out] pDst points to the output matrix
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_scale_f32(
|
|
const arm_matrix_instance_f32 * pSrc,
|
|
float32_t scale,
|
|
arm_matrix_instance_f32 * pDst);
|
|
|
|
/**
|
|
* @brief Q15 matrix scaling.
|
|
* @param[in] pSrc points to input matrix
|
|
* @param[in] scaleFract fractional portion of the scale factor
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] pDst points to output matrix
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_scale_q15(
|
|
const arm_matrix_instance_q15 * pSrc,
|
|
q15_t scaleFract,
|
|
int32_t shift,
|
|
arm_matrix_instance_q15 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix scaling.
|
|
* @param[in] pSrc points to input matrix
|
|
* @param[in] scaleFract fractional portion of the scale factor
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] pDst points to output matrix structure
|
|
* @return The function returns either
|
|
* <code>ARM_MATH_SIZE_MISMATCH</code> or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
|
|
*/
|
|
arm_status arm_mat_scale_q31(
|
|
const arm_matrix_instance_q31 * pSrc,
|
|
q31_t scaleFract,
|
|
int32_t shift,
|
|
arm_matrix_instance_q31 * pDst);
|
|
|
|
/**
|
|
* @brief Q31 matrix initialization.
|
|
* @param[in,out] S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] pData points to the matrix data array.
|
|
*/
|
|
void arm_mat_init_q31(
|
|
arm_matrix_instance_q31 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
q31_t * pData);
|
|
|
|
/**
|
|
* @brief Q15 matrix initialization.
|
|
* @param[in,out] S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] pData points to the matrix data array.
|
|
*/
|
|
void arm_mat_init_q15(
|
|
arm_matrix_instance_q15 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
q15_t * pData);
|
|
|
|
/**
|
|
* @brief Floating-point matrix initialization.
|
|
* @param[in,out] S points to an instance of the floating-point matrix structure.
|
|
* @param[in] nRows number of rows in the matrix.
|
|
* @param[in] nColumns number of columns in the matrix.
|
|
* @param[in] pData points to the matrix data array.
|
|
*/
|
|
void arm_mat_init_f32(
|
|
arm_matrix_instance_f32 * S,
|
|
uint16_t nRows,
|
|
uint16_t nColumns,
|
|
float32_t * pData);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
q15_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
#if !defined (ARM_MATH_DSP)
|
|
q15_t A1;
|
|
q15_t A2;
|
|
#else
|
|
q31_t A1; /**< The derived gain A1 = -Kp - 2Kd | Kd.*/
|
|
#endif
|
|
q15_t state[3]; /**< The state array of length 3. */
|
|
q15_t Kp; /**< The proportional gain. */
|
|
q15_t Ki; /**< The integral gain. */
|
|
q15_t Kd; /**< The derivative gain. */
|
|
} arm_pid_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
q31_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
q31_t A1; /**< The derived gain, A1 = -Kp - 2Kd. */
|
|
q31_t A2; /**< The derived gain, A2 = Kd . */
|
|
q31_t state[3]; /**< The state array of length 3. */
|
|
q31_t Kp; /**< The proportional gain. */
|
|
q31_t Ki; /**< The integral gain. */
|
|
q31_t Kd; /**< The derivative gain. */
|
|
} arm_pid_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point PID Control.
|
|
*/
|
|
typedef struct
|
|
{
|
|
float32_t A0; /**< The derived gain, A0 = Kp + Ki + Kd . */
|
|
float32_t A1; /**< The derived gain, A1 = -Kp - 2Kd. */
|
|
float32_t A2; /**< The derived gain, A2 = Kd . */
|
|
float32_t state[3]; /**< The state array of length 3. */
|
|
float32_t Kp; /**< The proportional gain. */
|
|
float32_t Ki; /**< The integral gain. */
|
|
float32_t Kd; /**< The derivative gain. */
|
|
} arm_pid_instance_f32;
|
|
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point PID Control.
|
|
* @param[in,out] S points to an instance of the PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
*/
|
|
void arm_pid_init_f32(
|
|
arm_pid_instance_f32 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
|
|
/**
|
|
* @brief Reset function for the floating-point PID Control.
|
|
* @param[in,out] S is an instance of the floating-point PID Control structure
|
|
*/
|
|
void arm_pid_reset_f32(
|
|
arm_pid_instance_f32 * S);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 PID Control.
|
|
* @param[in,out] S points to an instance of the Q15 PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
*/
|
|
void arm_pid_init_q31(
|
|
arm_pid_instance_q31 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
|
|
/**
|
|
* @brief Reset function for the Q31 PID Control.
|
|
* @param[in,out] S points to an instance of the Q31 PID Control structure
|
|
*/
|
|
|
|
void arm_pid_reset_q31(
|
|
arm_pid_instance_q31 * S);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 PID Control.
|
|
* @param[in,out] S points to an instance of the Q15 PID structure.
|
|
* @param[in] resetStateFlag flag to reset the state. 0 = no change in state 1 = reset the state.
|
|
*/
|
|
void arm_pid_init_q15(
|
|
arm_pid_instance_q15 * S,
|
|
int32_t resetStateFlag);
|
|
|
|
|
|
/**
|
|
* @brief Reset function for the Q15 PID Control.
|
|
* @param[in,out] S points to an instance of the q15 PID Control structure
|
|
*/
|
|
void arm_pid_reset_q15(
|
|
arm_pid_instance_q15 * S);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point Linear Interpolate function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t nValues; /**< nValues */
|
|
float32_t x1; /**< x1 */
|
|
float32_t xSpacing; /**< xSpacing */
|
|
float32_t *pYData; /**< pointer to the table of Y values */
|
|
} arm_linear_interp_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point bilinear interpolation function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
float32_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 bilinear interpolation function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q31_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 bilinear interpolation function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q15_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 bilinear interpolation function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numRows; /**< number of rows in the data table. */
|
|
uint16_t numCols; /**< number of columns in the data table. */
|
|
q7_t *pData; /**< points to the data table. */
|
|
} arm_bilinear_interp_instance_q7;
|
|
|
|
|
|
/**
|
|
* @brief Q7 vector multiplication.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_mult_q7(
|
|
const q7_t * pSrcA,
|
|
const q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q15 vector multiplication.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_mult_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q31 vector multiplication.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_mult_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point vector multiplication.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_mult_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const q15_t *pTwiddle; /**< points to the Sin twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix2_instance_q15;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_q15(
|
|
arm_cfft_radix2_instance_q15 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_q15(
|
|
const arm_cfft_radix2_instance_q15 * S,
|
|
q15_t * pSrc);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const q15_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix4_instance_q15;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_q15(
|
|
arm_cfft_radix4_instance_q15 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_q15(
|
|
const arm_cfft_radix4_instance_q15 * S,
|
|
q15_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the Radix-2 Q31 CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const q31_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix2_instance_q31;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_q31(
|
|
arm_cfft_radix2_instance_q31 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_q31(
|
|
const arm_cfft_radix2_instance_q31 * S,
|
|
q31_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const q31_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
} arm_cfft_radix4_instance_q31;
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_q31(
|
|
const arm_cfft_radix4_instance_q31 * S,
|
|
q31_t * pSrc);
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_q31(
|
|
arm_cfft_radix4_instance_q31 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
float32_t onebyfftLen; /**< value of 1/fftLen. */
|
|
} arm_cfft_radix2_instance_f32;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix2_init_f32(
|
|
arm_cfft_radix2_instance_f32 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix2_f32(
|
|
const arm_cfft_radix2_instance_f32 * S,
|
|
float32_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
uint8_t ifftFlag; /**< flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. */
|
|
uint8_t bitReverseFlag; /**< flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. */
|
|
const float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t twidCoefModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
uint16_t bitRevFactor; /**< bit reversal modifier that supports different size FFTs with the same bit reversal table. */
|
|
float32_t onebyfftLen; /**< value of 1/fftLen. */
|
|
} arm_cfft_radix4_instance_f32;
|
|
|
|
/* Deprecated */
|
|
arm_status arm_cfft_radix4_init_f32(
|
|
arm_cfft_radix4_instance_f32 * S,
|
|
uint16_t fftLen,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/* Deprecated */
|
|
void arm_cfft_radix4_f32(
|
|
const arm_cfft_radix4_instance_f32 * S,
|
|
float32_t * pSrc);
|
|
|
|
/**
|
|
* @brief Instance structure for the fixed-point CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const q15_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_q15;
|
|
|
|
void arm_cfft_q15(
|
|
const arm_cfft_instance_q15 * S,
|
|
q15_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the fixed-point CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const q31_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_q31;
|
|
|
|
void arm_cfft_q31(
|
|
const arm_cfft_instance_q31 * S,
|
|
q31_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point CFFT/CIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t fftLen; /**< length of the FFT. */
|
|
const float32_t *pTwiddle; /**< points to the Twiddle factor table. */
|
|
const uint16_t *pBitRevTable; /**< points to the bit reversal table. */
|
|
uint16_t bitRevLength; /**< bit reversal table length. */
|
|
} arm_cfft_instance_f32;
|
|
|
|
void arm_cfft_f32(
|
|
const arm_cfft_instance_f32 * S,
|
|
float32_t * p1,
|
|
uint8_t ifftFlag,
|
|
uint8_t bitReverseFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 RFFT/RIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
const q15_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
const q15_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
const arm_cfft_instance_q15 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_q15;
|
|
|
|
arm_status arm_rfft_init_q15(
|
|
arm_rfft_instance_q15 * S,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_q15(
|
|
const arm_rfft_instance_q15 * S,
|
|
q15_t * pSrc,
|
|
q15_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 RFFT/RIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
const q31_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
const q31_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
const arm_cfft_instance_q31 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_q31;
|
|
|
|
arm_status arm_rfft_init_q31(
|
|
arm_rfft_instance_q31 * S,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_q31(
|
|
const arm_rfft_instance_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point RFFT/RIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t fftLenReal; /**< length of the real FFT. */
|
|
uint16_t fftLenBy2; /**< length of the complex FFT. */
|
|
uint8_t ifftFlagR; /**< flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform. */
|
|
uint8_t bitReverseFlagR; /**< flag that enables (bitReverseFlagR=1) or disables (bitReverseFlagR=0) bit reversal of output. */
|
|
uint32_t twidCoefRModifier; /**< twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. */
|
|
const float32_t *pTwiddleAReal; /**< points to the real twiddle factor table. */
|
|
const float32_t *pTwiddleBReal; /**< points to the imag twiddle factor table. */
|
|
arm_cfft_radix4_instance_f32 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_rfft_instance_f32;
|
|
|
|
arm_status arm_rfft_init_f32(
|
|
arm_rfft_instance_f32 * S,
|
|
arm_cfft_radix4_instance_f32 * S_CFFT,
|
|
uint32_t fftLenReal,
|
|
uint32_t ifftFlagR,
|
|
uint32_t bitReverseFlag);
|
|
|
|
void arm_rfft_f32(
|
|
const arm_rfft_instance_f32 * S,
|
|
float32_t * pSrc,
|
|
float32_t * pDst);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point RFFT/RIFFT function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
arm_cfft_instance_f32 Sint; /**< Internal CFFT structure. */
|
|
uint16_t fftLenRFFT; /**< length of the real sequence */
|
|
const float32_t * pTwiddleRFFT; /**< Twiddle factors real stage */
|
|
} arm_rfft_fast_instance_f32 ;
|
|
|
|
arm_status arm_rfft_fast_init_f32 (
|
|
arm_rfft_fast_instance_f32 * S,
|
|
uint16_t fftLen);
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|
|
|
arm_status arm_rfft_32_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
|
|
arm_status arm_rfft_64_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
|
|
arm_status arm_rfft_128_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
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|
arm_status arm_rfft_256_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
|
|
|
|
arm_status arm_rfft_512_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
|
|
arm_status arm_rfft_1024_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
|
|
arm_status arm_rfft_2048_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
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|
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|
arm_status arm_rfft_4096_fast_init_f32 ( arm_rfft_fast_instance_f32 * S );
|
|
|
|
|
|
void arm_rfft_fast_f32(
|
|
arm_rfft_fast_instance_f32 * S,
|
|
float32_t * p, float32_t * pOut,
|
|
uint8_t ifftFlag);
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point DCT4/IDCT4 function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
float32_t normalize; /**< normalizing factor. */
|
|
const float32_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
const float32_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_f32 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_f32 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point DCT4/IDCT4.
|
|
* @param[in,out] S points to an instance of floating-point DCT4/IDCT4 structure.
|
|
* @param[in] S_RFFT points to an instance of floating-point RFFT/RIFFT structure.
|
|
* @param[in] S_CFFT points to an instance of floating-point CFFT/CIFFT structure.
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>fftLenReal</code> is not a supported transform length.
|
|
*/
|
|
arm_status arm_dct4_init_f32(
|
|
arm_dct4_instance_f32 * S,
|
|
arm_rfft_instance_f32 * S_RFFT,
|
|
arm_cfft_radix4_instance_f32 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
float32_t normalize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point DCT4/IDCT4.
|
|
* @param[in] S points to an instance of the floating-point DCT4/IDCT4 structure.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in,out] pInlineBuffer points to the in-place input and output buffer.
|
|
*/
|
|
void arm_dct4_f32(
|
|
const arm_dct4_instance_f32 * S,
|
|
float32_t * pState,
|
|
float32_t * pInlineBuffer);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 DCT4/IDCT4 function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
q31_t normalize; /**< normalizing factor. */
|
|
const q31_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
const q31_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_q31 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_q31 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_q31;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 DCT4/IDCT4.
|
|
* @param[in,out] S points to an instance of Q31 DCT4/IDCT4 structure.
|
|
* @param[in] S_RFFT points to an instance of Q31 RFFT/RIFFT structure
|
|
* @param[in] S_CFFT points to an instance of Q31 CFFT/CIFFT structure
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>N</code> is not a supported transform length.
|
|
*/
|
|
arm_status arm_dct4_init_q31(
|
|
arm_dct4_instance_q31 * S,
|
|
arm_rfft_instance_q31 * S_RFFT,
|
|
arm_cfft_radix4_instance_q31 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
q31_t normalize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 DCT4/IDCT4.
|
|
* @param[in] S points to an instance of the Q31 DCT4 structure.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in,out] pInlineBuffer points to the in-place input and output buffer.
|
|
*/
|
|
void arm_dct4_q31(
|
|
const arm_dct4_instance_q31 * S,
|
|
q31_t * pState,
|
|
q31_t * pInlineBuffer);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 DCT4/IDCT4 function.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t N; /**< length of the DCT4. */
|
|
uint16_t Nby2; /**< half of the length of the DCT4. */
|
|
q15_t normalize; /**< normalizing factor. */
|
|
const q15_t *pTwiddle; /**< points to the twiddle factor table. */
|
|
const q15_t *pCosFactor; /**< points to the cosFactor table. */
|
|
arm_rfft_instance_q15 *pRfft; /**< points to the real FFT instance. */
|
|
arm_cfft_radix4_instance_q15 *pCfft; /**< points to the complex FFT instance. */
|
|
} arm_dct4_instance_q15;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 DCT4/IDCT4.
|
|
* @param[in,out] S points to an instance of Q15 DCT4/IDCT4 structure.
|
|
* @param[in] S_RFFT points to an instance of Q15 RFFT/RIFFT structure.
|
|
* @param[in] S_CFFT points to an instance of Q15 CFFT/CIFFT structure.
|
|
* @param[in] N length of the DCT4.
|
|
* @param[in] Nby2 half of the length of the DCT4.
|
|
* @param[in] normalize normalizing factor.
|
|
* @return arm_status function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>N</code> is not a supported transform length.
|
|
*/
|
|
arm_status arm_dct4_init_q15(
|
|
arm_dct4_instance_q15 * S,
|
|
arm_rfft_instance_q15 * S_RFFT,
|
|
arm_cfft_radix4_instance_q15 * S_CFFT,
|
|
uint16_t N,
|
|
uint16_t Nby2,
|
|
q15_t normalize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 DCT4/IDCT4.
|
|
* @param[in] S points to an instance of the Q15 DCT4 structure.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in,out] pInlineBuffer points to the in-place input and output buffer.
|
|
*/
|
|
void arm_dct4_q15(
|
|
const arm_dct4_instance_q15 * S,
|
|
q15_t * pState,
|
|
q15_t * pInlineBuffer);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point vector addition.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_add_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q7 vector addition.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_add_q7(
|
|
const q7_t * pSrcA,
|
|
const q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q15 vector addition.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_add_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q31 vector addition.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_add_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point vector subtraction.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_sub_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q7 vector subtraction.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_sub_q7(
|
|
const q7_t * pSrcA,
|
|
const q7_t * pSrcB,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q15 vector subtraction.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_sub_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q31 vector subtraction.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_sub_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Multiplies a floating-point vector by a scalar.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] scale scale factor to be applied
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_scale_f32(
|
|
const float32_t * pSrc,
|
|
float32_t scale,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Multiplies a Q7 vector by a scalar.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_scale_q7(
|
|
const q7_t * pSrc,
|
|
q7_t scaleFract,
|
|
int8_t shift,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Multiplies a Q15 vector by a scalar.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_scale_q15(
|
|
const q15_t * pSrc,
|
|
q15_t scaleFract,
|
|
int8_t shift,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Multiplies a Q31 vector by a scalar.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] scaleFract fractional portion of the scale value
|
|
* @param[in] shift number of bits to shift the result by
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_scale_q31(
|
|
const q31_t * pSrc,
|
|
q31_t scaleFract,
|
|
int8_t shift,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q7 vector absolute value.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[out] pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_abs_q7(
|
|
const q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point vector absolute value.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[out] pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_abs_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q15 vector absolute value.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[out] pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_abs_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Q31 vector absolute value.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[out] pDst points to the output buffer
|
|
* @param[in] blockSize number of samples in each vector
|
|
*/
|
|
void arm_abs_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Dot product of floating-point vectors.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] result output result returned here
|
|
*/
|
|
void arm_dot_prod_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
uint32_t blockSize,
|
|
float32_t * result);
|
|
|
|
|
|
/**
|
|
* @brief Dot product of Q7 vectors.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] result output result returned here
|
|
*/
|
|
void arm_dot_prod_q7(
|
|
const q7_t * pSrcA,
|
|
const q7_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q31_t * result);
|
|
|
|
|
|
/**
|
|
* @brief Dot product of Q15 vectors.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] result output result returned here
|
|
*/
|
|
void arm_dot_prod_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q63_t * result);
|
|
|
|
|
|
/**
|
|
* @brief Dot product of Q31 vectors.
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] blockSize number of samples in each vector
|
|
* @param[out] result output result returned here
|
|
*/
|
|
void arm_dot_prod_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
uint32_t blockSize,
|
|
q63_t * result);
|
|
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q7 vector a specified number of bits.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_shift_q7(
|
|
const q7_t * pSrc,
|
|
int8_t shiftBits,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q15 vector a specified number of bits.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_shift_q15(
|
|
const q15_t * pSrc,
|
|
int8_t shiftBits,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Shifts the elements of a Q31 vector a specified number of bits.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] shiftBits number of bits to shift. A positive value shifts left; a negative value shifts right.
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_shift_q31(
|
|
const q31_t * pSrc,
|
|
int8_t shiftBits,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a floating-point vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_offset_f32(
|
|
const float32_t * pSrc,
|
|
float32_t offset,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q7 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_offset_q7(
|
|
const q7_t * pSrc,
|
|
q7_t offset,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q15 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_offset_q15(
|
|
const q15_t * pSrc,
|
|
q15_t offset,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Adds a constant offset to a Q31 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[in] offset is the offset to be added
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_offset_q31(
|
|
const q31_t * pSrc,
|
|
q31_t offset,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Negates the elements of a floating-point vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_negate_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q7 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_negate_q7(
|
|
const q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q15 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_negate_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Negates the elements of a Q31 vector.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] blockSize number of samples in the vector
|
|
*/
|
|
void arm_negate_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Copies the elements of a floating-point vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_copy_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q7 vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_copy_q7(
|
|
const q7_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q15 vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_copy_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Copies the elements of a Q31 vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_copy_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Fills a constant value into a floating-point vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_fill_f32(
|
|
float32_t value,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q7 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_fill_q7(
|
|
q7_t value,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q15 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_fill_q15(
|
|
q15_t value,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Fills a constant value into a Q31 vector.
|
|
* @param[in] value input value to be filled
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_fill_q31(
|
|
q31_t value,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of floating-point sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the location where the output result is written. Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_f32(
|
|
const float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
*/
|
|
void arm_conv_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the location where the output result is written. Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_fast_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
*/
|
|
void arm_conv_fast_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q31 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q31 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_fast_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q7 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
* @param[in] pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
*/
|
|
void arm_conv_opt_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Convolution of Q7 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length srcALen+srcBLen-1.
|
|
*/
|
|
void arm_conv_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of floating-point sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_f32(
|
|
const float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_fast_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q15 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] pScratch1 points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_fast_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q31 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q31 sequences (fast version) for Cortex-M3 and Cortex-M4
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_fast_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q7 sequences
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @param[in] pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_opt_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Partial convolution of Q7 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] firstIndex is the first output sample to start with.
|
|
* @param[in] numPoints is the number of output points to be computed.
|
|
* @return Returns either ARM_MATH_SUCCESS if the function completed correctly or ARM_MATH_ARGUMENT_ERROR if the requested subset is not in the range [0 srcALen+srcBLen-2].
|
|
*/
|
|
arm_status arm_conv_partial_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
uint32_t firstIndex,
|
|
uint32_t numPoints);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR decimator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
const q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
} arm_fir_decimate_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR decimator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
const q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
} arm_fir_decimate_instance_q31;
|
|
|
|
/**
|
|
@brief Instance structure for floating-point FIR decimator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t M; /**< decimation factor. */
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
const float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
} arm_fir_decimate_instance_f32;
|
|
|
|
|
|
/**
|
|
@brief Processing function for floating-point FIR decimator.
|
|
@param[in] S points to an instance of the floating-point FIR decimator structure
|
|
@param[in] pSrc points to the block of input data
|
|
@param[out] pDst points to the block of output data
|
|
@param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_fir_decimate_f32(
|
|
const arm_fir_decimate_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
@brief Initialization function for the floating-point FIR decimator.
|
|
@param[in,out] S points to an instance of the floating-point FIR decimator structure
|
|
@param[in] numTaps number of coefficients in the filter
|
|
@param[in] M decimation factor
|
|
@param[in] pCoeffs points to the filter coefficients
|
|
@param[in] pState points to the state buffer
|
|
@param[in] blockSize number of input samples to process per call
|
|
@return execution status
|
|
- \ref ARM_MATH_SUCCESS : Operation successful
|
|
- \ref ARM_MATH_LENGTH_ERROR : <code>blockSize</code> is not a multiple of <code>M</code>
|
|
*/
|
|
arm_status arm_fir_decimate_init_f32(
|
|
arm_fir_decimate_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR decimator.
|
|
* @param[in] S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_decimate_q15(
|
|
const arm_fir_decimate_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR decimator (fast variant) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_decimate_fast_q15(
|
|
const arm_fir_decimate_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR decimator.
|
|
* @param[in,out] S points to an instance of the Q15 FIR decimator structure.
|
|
* @param[in] numTaps number of coefficients in the filter.
|
|
* @param[in] M decimation factor.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* <code>blockSize</code> is not a multiple of <code>M</code>.
|
|
*/
|
|
arm_status arm_fir_decimate_init_q15(
|
|
arm_fir_decimate_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR decimator.
|
|
* @param[in] S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_decimate_q31(
|
|
const arm_fir_decimate_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR decimator (fast variant) for Cortex-M3 and Cortex-M4.
|
|
* @param[in] S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_decimate_fast_q31(
|
|
const arm_fir_decimate_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR decimator.
|
|
* @param[in,out] S points to an instance of the Q31 FIR decimator structure.
|
|
* @param[in] numTaps number of coefficients in the filter.
|
|
* @param[in] M decimation factor.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* <code>blockSize</code> is not a multiple of <code>M</code>.
|
|
*/
|
|
arm_status arm_fir_decimate_init_q31(
|
|
arm_fir_decimate_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
uint8_t M,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR interpolator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
const q15_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
|
|
} arm_fir_interpolate_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR interpolator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
const q31_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length blockSize+phaseLength-1. */
|
|
} arm_fir_interpolate_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR interpolator.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t L; /**< upsample factor. */
|
|
uint16_t phaseLength; /**< length of each polyphase filter component. */
|
|
const float32_t *pCoeffs; /**< points to the coefficient array. The array is of length L*phaseLength. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length phaseLength+numTaps-1. */
|
|
} arm_fir_interpolate_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR interpolator.
|
|
* @param[in] S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_interpolate_q15(
|
|
const arm_fir_interpolate_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR interpolator.
|
|
* @param[in,out] S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
arm_status arm_fir_interpolate_init_q15(
|
|
arm_fir_interpolate_instance_q15 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR interpolator.
|
|
* @param[in] S points to an instance of the Q15 FIR interpolator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_interpolate_q31(
|
|
const arm_fir_interpolate_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR interpolator.
|
|
* @param[in,out] S points to an instance of the Q31 FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
arm_status arm_fir_interpolate_init_q31(
|
|
arm_fir_interpolate_instance_q31 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR interpolator.
|
|
* @param[in] S points to an instance of the floating-point FIR interpolator structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_interpolate_f32(
|
|
const arm_fir_interpolate_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR interpolator.
|
|
* @param[in,out] S points to an instance of the floating-point FIR interpolator structure.
|
|
* @param[in] L upsample factor.
|
|
* @param[in] numTaps number of filter coefficients in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficient buffer.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
* @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_LENGTH_ERROR if
|
|
* the filter length <code>numTaps</code> is not a multiple of the interpolation factor <code>L</code>.
|
|
*/
|
|
arm_status arm_fir_interpolate_init_f32(
|
|
arm_fir_interpolate_instance_f32 * S,
|
|
uint8_t L,
|
|
uint16_t numTaps,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the high precision Q31 Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
q63_t *pState; /**< points to the array of state coefficients. The array is of length 4*numStages. */
|
|
const q31_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
uint8_t postShift; /**< additional shift, in bits, applied to each output sample. */
|
|
} arm_biquad_cas_df1_32x64_ins_q31;
|
|
|
|
|
|
/**
|
|
* @param[in] S points to an instance of the high precision Q31 Biquad cascade filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cas_df1_32x64_q31(
|
|
const arm_biquad_cas_df1_32x64_ins_q31 * S,
|
|
q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @param[in,out] S points to an instance of the high precision Q31 Biquad cascade filter structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] postShift shift to be applied to the output. Varies according to the coefficients format
|
|
*/
|
|
void arm_biquad_cas_df1_32x64_init_q31(
|
|
arm_biquad_cas_df1_32x64_ins_q31 * S,
|
|
uint8_t numStages,
|
|
const q31_t * pCoeffs,
|
|
q63_t * pState,
|
|
uint8_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< points to the array of state coefficients. The array is of length 2*numStages. */
|
|
const float32_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_df2T_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float32_t *pState; /**< points to the array of state coefficients. The array is of length 4*numStages. */
|
|
const float32_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_stereo_df2T_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point transposed direct form II Biquad cascade filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint8_t numStages; /**< number of 2nd order stages in the filter. Overall order is 2*numStages. */
|
|
float64_t *pState; /**< points to the array of state coefficients. The array is of length 2*numStages. */
|
|
float64_t *pCoeffs; /**< points to the array of coefficients. The array is of length 5*numStages. */
|
|
} arm_biquad_cascade_df2T_instance_f64;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in] S points to an instance of the filter data structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df2T_f32(
|
|
const arm_biquad_cascade_df2T_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter. 2 channels
|
|
* @param[in] S points to an instance of the filter data structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_stereo_df2T_f32(
|
|
const arm_biquad_cascade_stereo_df2T_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in] S points to an instance of the filter data structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_biquad_cascade_df2T_f64(
|
|
const arm_biquad_cascade_df2T_instance_f64 * S,
|
|
float64_t * pSrc,
|
|
float64_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
#if defined(ARM_MATH_NEON)
|
|
void arm_biquad_cascade_df2T_compute_coefs_f32(
|
|
arm_biquad_cascade_df2T_instance_f32 * S,
|
|
uint8_t numStages,
|
|
float32_t * pCoeffs);
|
|
#endif
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
*/
|
|
void arm_biquad_cascade_df2T_init_f32(
|
|
arm_biquad_cascade_df2T_instance_f32 * S,
|
|
uint8_t numStages,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
*/
|
|
void arm_biquad_cascade_stereo_df2T_init_f32(
|
|
arm_biquad_cascade_stereo_df2T_instance_f32 * S,
|
|
uint8_t numStages,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter.
|
|
* @param[in,out] S points to an instance of the filter data structure.
|
|
* @param[in] numStages number of 2nd order stages in the filter.
|
|
* @param[in] pCoeffs points to the filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
*/
|
|
void arm_biquad_cascade_df2T_init_f64(
|
|
arm_biquad_cascade_df2T_instance_f64 * S,
|
|
uint8_t numStages,
|
|
float64_t * pCoeffs,
|
|
float64_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 FIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
const q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 FIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
const q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point FIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of filter stages. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numStages. */
|
|
const float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numStages. */
|
|
} arm_fir_lattice_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 FIR lattice filter.
|
|
* @param[in] S points to an instance of the Q15 FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] pState points to the state buffer. The array is of length numStages.
|
|
*/
|
|
void arm_fir_lattice_init_q15(
|
|
arm_fir_lattice_instance_q15 * S,
|
|
uint16_t numStages,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 FIR lattice filter.
|
|
* @param[in] S points to an instance of the Q15 FIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_lattice_q15(
|
|
const arm_fir_lattice_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 FIR lattice filter.
|
|
* @param[in] S points to an instance of the Q31 FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] pState points to the state buffer. The array is of length numStages.
|
|
*/
|
|
void arm_fir_lattice_init_q31(
|
|
arm_fir_lattice_instance_q31 * S,
|
|
uint16_t numStages,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 FIR lattice filter.
|
|
* @param[in] S points to an instance of the Q31 FIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_lattice_q31(
|
|
const arm_fir_lattice_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point FIR lattice filter.
|
|
* @param[in] S points to an instance of the floating-point FIR lattice structure.
|
|
* @param[in] numStages number of filter stages.
|
|
* @param[in] pCoeffs points to the coefficient buffer. The array is of length numStages.
|
|
* @param[in] pState points to the state buffer. The array is of length numStages.
|
|
*/
|
|
void arm_fir_lattice_init_f32(
|
|
arm_fir_lattice_instance_f32 * S,
|
|
uint16_t numStages,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point FIR lattice filter.
|
|
* @param[in] S points to an instance of the floating-point FIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_fir_lattice_f32(
|
|
const arm_fir_lattice_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
q15_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
q15_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
q31_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
q31_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point IIR lattice filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numStages; /**< number of stages in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numStages+blockSize. */
|
|
float32_t *pkCoeffs; /**< points to the reflection coefficient array. The array is of length numStages. */
|
|
float32_t *pvCoeffs; /**< points to the ladder coefficient array. The array is of length numStages+1. */
|
|
} arm_iir_lattice_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point IIR lattice filter.
|
|
* @param[in] S points to an instance of the floating-point IIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_iir_lattice_f32(
|
|
const arm_iir_lattice_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point IIR lattice filter.
|
|
* @param[in] S points to an instance of the floating-point IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] pkCoeffs points to the reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] pvCoeffs points to the ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] pState points to the state buffer. The array is of length numStages+blockSize-1.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_iir_lattice_init_f32(
|
|
arm_iir_lattice_instance_f32 * S,
|
|
uint16_t numStages,
|
|
float32_t * pkCoeffs,
|
|
float32_t * pvCoeffs,
|
|
float32_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 IIR lattice filter.
|
|
* @param[in] S points to an instance of the Q31 IIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_iir_lattice_q31(
|
|
const arm_iir_lattice_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 IIR lattice filter.
|
|
* @param[in] S points to an instance of the Q31 IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] pkCoeffs points to the reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] pvCoeffs points to the ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] pState points to the state buffer. The array is of length numStages+blockSize.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_iir_lattice_init_q31(
|
|
arm_iir_lattice_instance_q31 * S,
|
|
uint16_t numStages,
|
|
q31_t * pkCoeffs,
|
|
q31_t * pvCoeffs,
|
|
q31_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 IIR lattice filter.
|
|
* @param[in] S points to an instance of the Q15 IIR lattice structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_iir_lattice_q15(
|
|
const arm_iir_lattice_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 IIR lattice filter.
|
|
* @param[in] S points to an instance of the fixed-point Q15 IIR lattice structure.
|
|
* @param[in] numStages number of stages in the filter.
|
|
* @param[in] pkCoeffs points to reflection coefficient buffer. The array is of length numStages.
|
|
* @param[in] pvCoeffs points to ladder coefficient buffer. The array is of length numStages+1.
|
|
* @param[in] pState points to state buffer. The array is of length numStages+blockSize.
|
|
* @param[in] blockSize number of samples to process per call.
|
|
*/
|
|
void arm_iir_lattice_init_q15(
|
|
arm_iir_lattice_instance_q15 * S,
|
|
uint16_t numStages,
|
|
q15_t * pkCoeffs,
|
|
q15_t * pvCoeffs,
|
|
q15_t * pState,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
float32_t mu; /**< step size that controls filter coefficient updates. */
|
|
} arm_lms_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for floating-point LMS filter.
|
|
* @param[in] S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_f32(
|
|
const arm_lms_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pRef,
|
|
float32_t * pOut,
|
|
float32_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for floating-point LMS filter.
|
|
* @param[in] S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to the coefficient buffer.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_init_f32(
|
|
arm_lms_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
float32_t mu,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q15_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint32_t postShift; /**< bit shift applied to coefficients. */
|
|
} arm_lms_instance_q15;
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 LMS filter.
|
|
* @param[in] S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to the coefficient buffer.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
*/
|
|
void arm_lms_init_q15(
|
|
arm_lms_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
q15_t mu,
|
|
uint32_t blockSize,
|
|
uint32_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for Q15 LMS filter.
|
|
* @param[in] S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_q15(
|
|
const arm_lms_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pRef,
|
|
q15_t * pOut,
|
|
q15_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q31_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint32_t postShift; /**< bit shift applied to coefficients. */
|
|
} arm_lms_instance_q31;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for Q31 LMS filter.
|
|
* @param[in] S points to an instance of the Q15 LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_q31(
|
|
const arm_lms_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pRef,
|
|
q31_t * pOut,
|
|
q31_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for Q31 LMS filter.
|
|
* @param[in] S points to an instance of the Q31 LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to coefficient buffer.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
*/
|
|
void arm_lms_init_q31(
|
|
arm_lms_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
q31_t mu,
|
|
uint32_t blockSize,
|
|
uint32_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point normalized LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
float32_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
float32_t mu; /**< step size that control filter coefficient updates. */
|
|
float32_t energy; /**< saves previous frame energy. */
|
|
float32_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_f32;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for floating-point normalized LMS filter.
|
|
* @param[in] S points to an instance of the floating-point normalized LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_norm_f32(
|
|
arm_lms_norm_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pRef,
|
|
float32_t * pOut,
|
|
float32_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for floating-point normalized LMS filter.
|
|
* @param[in] S points to an instance of the floating-point LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to coefficient buffer.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_norm_init_f32(
|
|
arm_lms_norm_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
float32_t mu,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 normalized LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
q31_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q31_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint8_t postShift; /**< bit shift applied to coefficients. */
|
|
const q31_t *recipTable; /**< points to the reciprocal initial value table. */
|
|
q31_t energy; /**< saves previous frame energy. */
|
|
q31_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_q31;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for Q31 normalized LMS filter.
|
|
* @param[in] S points to an instance of the Q31 normalized LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_norm_q31(
|
|
arm_lms_norm_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pRef,
|
|
q31_t * pOut,
|
|
q31_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for Q31 normalized LMS filter.
|
|
* @param[in] S points to an instance of the Q31 normalized LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to coefficient buffer.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
*/
|
|
void arm_lms_norm_init_q31(
|
|
arm_lms_norm_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
q31_t mu,
|
|
uint32_t blockSize,
|
|
uint8_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 normalized LMS filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< Number of coefficients in the filter. */
|
|
q15_t *pState; /**< points to the state variable array. The array is of length numTaps+blockSize-1. */
|
|
q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps. */
|
|
q15_t mu; /**< step size that controls filter coefficient updates. */
|
|
uint8_t postShift; /**< bit shift applied to coefficients. */
|
|
const q15_t *recipTable; /**< Points to the reciprocal initial value table. */
|
|
q15_t energy; /**< saves previous frame energy. */
|
|
q15_t x0; /**< saves previous input sample. */
|
|
} arm_lms_norm_instance_q15;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for Q15 normalized LMS filter.
|
|
* @param[in] S points to an instance of the Q15 normalized LMS filter structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[in] pRef points to the block of reference data.
|
|
* @param[out] pOut points to the block of output data.
|
|
* @param[out] pErr points to the block of error data.
|
|
* @param[in] blockSize number of samples to process.
|
|
*/
|
|
void arm_lms_norm_q15(
|
|
arm_lms_norm_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pRef,
|
|
q15_t * pOut,
|
|
q15_t * pErr,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for Q15 normalized LMS filter.
|
|
* @param[in] S points to an instance of the Q15 normalized LMS filter structure.
|
|
* @param[in] numTaps number of filter coefficients.
|
|
* @param[in] pCoeffs points to coefficient buffer.
|
|
* @param[in] pState points to state buffer.
|
|
* @param[in] mu step size that controls filter coefficient updates.
|
|
* @param[in] blockSize number of samples to process.
|
|
* @param[in] postShift bit shift applied to coefficients.
|
|
*/
|
|
void arm_lms_norm_init_q15(
|
|
arm_lms_norm_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
q15_t mu,
|
|
uint32_t blockSize,
|
|
uint8_t postShift);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of floating-point sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
*/
|
|
void arm_correlate_f32(
|
|
const float32_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const float32_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
float32_t * pDst);
|
|
|
|
|
|
/**
|
|
@brief Correlation of Q15 sequences
|
|
@param[in] pSrcA points to the first input sequence
|
|
@param[in] srcALen length of the first input sequence
|
|
@param[in] pSrcB points to the second input sequence
|
|
@param[in] srcBLen length of the second input sequence
|
|
@param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
@param[in] pScratch points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
*/
|
|
void arm_correlate_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch);
|
|
|
|
|
|
/**
|
|
@brief Correlation of Q15 sequences.
|
|
@param[in] pSrcA points to the first input sequence
|
|
@param[in] srcALen length of the first input sequence
|
|
@param[in] pSrcB points to the second input sequence
|
|
@param[in] srcBLen length of the second input sequence
|
|
@param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
*/
|
|
void arm_correlate_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
|
|
/**
|
|
@brief Correlation of Q15 sequences (fast version).
|
|
@param[in] pSrcA points to the first input sequence
|
|
@param[in] srcALen length of the first input sequence
|
|
@param[in] pSrcB points to the second input sequence
|
|
@param[in] srcBLen length of the second input sequence
|
|
@param[out] pDst points to the location where the output result is written. Length 2 * max(srcALen, srcBLen) - 1.
|
|
@return none
|
|
*/
|
|
void arm_correlate_fast_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst);
|
|
|
|
|
|
/**
|
|
@brief Correlation of Q15 sequences (fast version).
|
|
@param[in] pSrcA points to the first input sequence.
|
|
@param[in] srcALen length of the first input sequence.
|
|
@param[in] pSrcB points to the second input sequence.
|
|
@param[in] srcBLen length of the second input sequence.
|
|
@param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
@param[in] pScratch points to scratch buffer of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
*/
|
|
void arm_correlate_fast_opt_q15(
|
|
const q15_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q15_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q15_t * pDst,
|
|
q15_t * pScratch);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q31 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
*/
|
|
void arm_correlate_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
/**
|
|
@brief Correlation of Q31 sequences (fast version).
|
|
@param[in] pSrcA points to the first input sequence
|
|
@param[in] srcALen length of the first input sequence
|
|
@param[in] pSrcB points to the second input sequence
|
|
@param[in] srcBLen length of the second input sequence
|
|
@param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
*/
|
|
void arm_correlate_fast_q31(
|
|
const q31_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q31_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q31_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q7 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
* @param[in] pScratch1 points to scratch buffer(of type q15_t) of size max(srcALen, srcBLen) + 2*min(srcALen, srcBLen) - 2.
|
|
* @param[in] pScratch2 points to scratch buffer (of type q15_t) of size min(srcALen, srcBLen).
|
|
*/
|
|
void arm_correlate_opt_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst,
|
|
q15_t * pScratch1,
|
|
q15_t * pScratch2);
|
|
|
|
|
|
/**
|
|
* @brief Correlation of Q7 sequences.
|
|
* @param[in] pSrcA points to the first input sequence.
|
|
* @param[in] srcALen length of the first input sequence.
|
|
* @param[in] pSrcB points to the second input sequence.
|
|
* @param[in] srcBLen length of the second input sequence.
|
|
* @param[out] pDst points to the block of output data Length 2 * max(srcALen, srcBLen) - 1.
|
|
*/
|
|
void arm_correlate_q7(
|
|
const q7_t * pSrcA,
|
|
uint32_t srcALen,
|
|
const q7_t * pSrcB,
|
|
uint32_t srcBLen,
|
|
q7_t * pDst);
|
|
|
|
|
|
/**
|
|
* @brief Instance structure for the floating-point sparse FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
float32_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
const float32_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_f32;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q31 sparse FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q31_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
const q31_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q31;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q15 sparse FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q15_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
const q15_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q15;
|
|
|
|
/**
|
|
* @brief Instance structure for the Q7 sparse FIR filter.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint16_t numTaps; /**< number of coefficients in the filter. */
|
|
uint16_t stateIndex; /**< state buffer index. Points to the oldest sample in the state buffer. */
|
|
q7_t *pState; /**< points to the state buffer array. The array is of length maxDelay+blockSize-1. */
|
|
const q7_t *pCoeffs; /**< points to the coefficient array. The array is of length numTaps.*/
|
|
uint16_t maxDelay; /**< maximum offset specified by the pTapDelay array. */
|
|
int32_t *pTapDelay; /**< points to the array of delay values. The array is of length numTaps. */
|
|
} arm_fir_sparse_instance_q7;
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the floating-point sparse FIR filter.
|
|
* @param[in] S points to an instance of the floating-point sparse FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_sparse_f32(
|
|
arm_fir_sparse_instance_f32 * S,
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
float32_t * pScratchIn,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the floating-point sparse FIR filter.
|
|
* @param[in,out] S points to an instance of the floating-point sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] pCoeffs points to the array of filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
*/
|
|
void arm_fir_sparse_init_f32(
|
|
arm_fir_sparse_instance_f32 * S,
|
|
uint16_t numTaps,
|
|
const float32_t * pCoeffs,
|
|
float32_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q31 sparse FIR filter.
|
|
* @param[in] S points to an instance of the Q31 sparse FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_sparse_q31(
|
|
arm_fir_sparse_instance_q31 * S,
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
q31_t * pScratchIn,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q31 sparse FIR filter.
|
|
* @param[in,out] S points to an instance of the Q31 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] pCoeffs points to the array of filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
*/
|
|
void arm_fir_sparse_init_q31(
|
|
arm_fir_sparse_instance_q31 * S,
|
|
uint16_t numTaps,
|
|
const q31_t * pCoeffs,
|
|
q31_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q15 sparse FIR filter.
|
|
* @param[in] S points to an instance of the Q15 sparse FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] pScratchOut points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_sparse_q15(
|
|
arm_fir_sparse_instance_q15 * S,
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
q15_t * pScratchIn,
|
|
q31_t * pScratchOut,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q15 sparse FIR filter.
|
|
* @param[in,out] S points to an instance of the Q15 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] pCoeffs points to the array of filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
*/
|
|
void arm_fir_sparse_init_q15(
|
|
arm_fir_sparse_instance_q15 * S,
|
|
uint16_t numTaps,
|
|
const q15_t * pCoeffs,
|
|
q15_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Processing function for the Q7 sparse FIR filter.
|
|
* @param[in] S points to an instance of the Q7 sparse FIR structure.
|
|
* @param[in] pSrc points to the block of input data.
|
|
* @param[out] pDst points to the block of output data
|
|
* @param[in] pScratchIn points to a temporary buffer of size blockSize.
|
|
* @param[in] pScratchOut points to a temporary buffer of size blockSize.
|
|
* @param[in] blockSize number of input samples to process per call.
|
|
*/
|
|
void arm_fir_sparse_q7(
|
|
arm_fir_sparse_instance_q7 * S,
|
|
const q7_t * pSrc,
|
|
q7_t * pDst,
|
|
q7_t * pScratchIn,
|
|
q31_t * pScratchOut,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Initialization function for the Q7 sparse FIR filter.
|
|
* @param[in,out] S points to an instance of the Q7 sparse FIR structure.
|
|
* @param[in] numTaps number of nonzero coefficients in the filter.
|
|
* @param[in] pCoeffs points to the array of filter coefficients.
|
|
* @param[in] pState points to the state buffer.
|
|
* @param[in] pTapDelay points to the array of offset times.
|
|
* @param[in] maxDelay maximum offset time supported.
|
|
* @param[in] blockSize number of samples that will be processed per block.
|
|
*/
|
|
void arm_fir_sparse_init_q7(
|
|
arm_fir_sparse_instance_q7 * S,
|
|
uint16_t numTaps,
|
|
const q7_t * pCoeffs,
|
|
q7_t * pState,
|
|
int32_t * pTapDelay,
|
|
uint16_t maxDelay,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point sin_cos function.
|
|
* @param[in] theta input value in degrees
|
|
* @param[out] pSinVal points to the processed sine output.
|
|
* @param[out] pCosVal points to the processed cos output.
|
|
*/
|
|
void arm_sin_cos_f32(
|
|
float32_t theta,
|
|
float32_t * pSinVal,
|
|
float32_t * pCosVal);
|
|
|
|
|
|
/**
|
|
* @brief Q31 sin_cos function.
|
|
* @param[in] theta scaled input value in degrees
|
|
* @param[out] pSinVal points to the processed sine output.
|
|
* @param[out] pCosVal points to the processed cosine output.
|
|
*/
|
|
void arm_sin_cos_q31(
|
|
q31_t theta,
|
|
q31_t * pSinVal,
|
|
q31_t * pCosVal);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex conjugate.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_conj_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
/**
|
|
* @brief Q31 complex conjugate.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_conj_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex conjugate.
|
|
* @param[in] pSrc points to the input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_conj_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex magnitude squared
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_squared_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q31 complex magnitude squared
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_squared_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex magnitude squared
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_squared_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup PID PID Motor Control
|
|
*
|
|
* A Proportional Integral Derivative (PID) controller is a generic feedback control
|
|
* loop mechanism widely used in industrial control systems.
|
|
* A PID controller is the most commonly used type of feedback controller.
|
|
*
|
|
* This set of functions implements (PID) controllers
|
|
* for Q15, Q31, and floating-point data types. The functions operate on a single sample
|
|
* of data and each call to the function returns a single processed value.
|
|
* <code>S</code> points to an instance of the PID control data structure. <code>in</code>
|
|
* is the input sample value. The functions return the output value.
|
|
*
|
|
* \par Algorithm:
|
|
* <pre>
|
|
* y[n] = y[n-1] + A0 * x[n] + A1 * x[n-1] + A2 * x[n-2]
|
|
* A0 = Kp + Ki + Kd
|
|
* A1 = (-Kp ) - (2 * Kd )
|
|
* A2 = Kd
|
|
* </pre>
|
|
*
|
|
* \par
|
|
* where \c Kp is proportional constant, \c Ki is Integral constant and \c Kd is Derivative constant
|
|
*
|
|
* \par
|
|
* \image html PID.gif "Proportional Integral Derivative Controller"
|
|
*
|
|
* \par
|
|
* The PID controller calculates an "error" value as the difference between
|
|
* the measured output and the reference input.
|
|
* The controller attempts to minimize the error by adjusting the process control inputs.
|
|
* The proportional value determines the reaction to the current error,
|
|
* the integral value determines the reaction based on the sum of recent errors,
|
|
* and the derivative value determines the reaction based on the rate at which the error has been changing.
|
|
*
|
|
* \par Instance Structure
|
|
* The Gains A0, A1, A2 and state variables for a PID controller are stored together in an instance data structure.
|
|
* A separate instance structure must be defined for each PID Controller.
|
|
* There are separate instance structure declarations for each of the 3 supported data types.
|
|
*
|
|
* \par Reset Functions
|
|
* There is also an associated reset function for each data type which clears the state array.
|
|
*
|
|
* \par Initialization Functions
|
|
* There is also an associated initialization function for each data type.
|
|
* The initialization function performs the following operations:
|
|
* - Initializes the Gains A0, A1, A2 from Kp,Ki, Kd gains.
|
|
* - Zeros out the values in the state buffer.
|
|
*
|
|
* \par
|
|
* Instance structure cannot be placed into a const data section and it is recommended to use the initialization function.
|
|
*
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the fixed-point versions of the PID Controller functions.
|
|
* In particular, the overflow and saturation behavior of the accumulator used in each function must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup PID
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Process function for the floating-point PID Control.
|
|
* @param[in,out] S is an instance of the floating-point PID Control structure
|
|
* @param[in] in input sample to process
|
|
* @return processed output sample.
|
|
*/
|
|
__STATIC_FORCEINLINE float32_t arm_pid_f32(
|
|
arm_pid_instance_f32 * S,
|
|
float32_t in)
|
|
{
|
|
float32_t out;
|
|
|
|
/* y[n] = y[n-1] + A0 * x[n] + A1 * x[n-1] + A2 * x[n-2] */
|
|
out = (S->A0 * in) +
|
|
(S->A1 * S->state[0]) + (S->A2 * S->state[1]) + (S->state[2]);
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
|
|
}
|
|
|
|
/**
|
|
@brief Process function for the Q31 PID Control.
|
|
@param[in,out] S points to an instance of the Q31 PID Control structure
|
|
@param[in] in input sample to process
|
|
@return processed output sample.
|
|
|
|
\par Scaling and Overflow Behavior
|
|
The function is implemented using an internal 64-bit accumulator.
|
|
The accumulator has a 2.62 format and maintains full precision of the intermediate multiplication results but provides only a single guard bit.
|
|
Thus, if the accumulator result overflows it wraps around rather than clip.
|
|
In order to avoid overflows completely the input signal must be scaled down by 2 bits as there are four additions.
|
|
After all multiply-accumulates are performed, the 2.62 accumulator is truncated to 1.32 format and then saturated to 1.31 format.
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t arm_pid_q31(
|
|
arm_pid_instance_q31 * S,
|
|
q31_t in)
|
|
{
|
|
q63_t acc;
|
|
q31_t out;
|
|
|
|
/* acc = A0 * x[n] */
|
|
acc = (q63_t) S->A0 * in;
|
|
|
|
/* acc += A1 * x[n-1] */
|
|
acc += (q63_t) S->A1 * S->state[0];
|
|
|
|
/* acc += A2 * x[n-2] */
|
|
acc += (q63_t) S->A2 * S->state[1];
|
|
|
|
/* convert output to 1.31 format to add y[n-1] */
|
|
out = (q31_t) (acc >> 31U);
|
|
|
|
/* out += y[n-1] */
|
|
out += S->state[2];
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Process function for the Q15 PID Control.
|
|
@param[in,out] S points to an instance of the Q15 PID Control structure
|
|
@param[in] in input sample to process
|
|
@return processed output sample.
|
|
|
|
\par Scaling and Overflow Behavior
|
|
The function is implemented using a 64-bit internal accumulator.
|
|
Both Gains and state variables are represented in 1.15 format and multiplications yield a 2.30 result.
|
|
The 2.30 intermediate results are accumulated in a 64-bit accumulator in 34.30 format.
|
|
There is no risk of internal overflow with this approach and the full precision of intermediate multiplications is preserved.
|
|
After all additions have been performed, the accumulator is truncated to 34.15 format by discarding low 15 bits.
|
|
Lastly, the accumulator is saturated to yield a result in 1.15 format.
|
|
*/
|
|
__STATIC_FORCEINLINE q15_t arm_pid_q15(
|
|
arm_pid_instance_q15 * S,
|
|
q15_t in)
|
|
{
|
|
q63_t acc;
|
|
q15_t out;
|
|
|
|
#if defined (ARM_MATH_DSP)
|
|
/* Implementation of PID controller */
|
|
|
|
/* acc = A0 * x[n] */
|
|
acc = (q31_t) __SMUAD((uint32_t)S->A0, (uint32_t)in);
|
|
|
|
/* acc += A1 * x[n-1] + A2 * x[n-2] */
|
|
acc = (q63_t)__SMLALD((uint32_t)S->A1, (uint32_t)read_q15x2 (S->state), (uint64_t)acc);
|
|
#else
|
|
/* acc = A0 * x[n] */
|
|
acc = ((q31_t) S->A0) * in;
|
|
|
|
/* acc += A1 * x[n-1] + A2 * x[n-2] */
|
|
acc += (q31_t) S->A1 * S->state[0];
|
|
acc += (q31_t) S->A2 * S->state[1];
|
|
#endif
|
|
|
|
/* acc += y[n-1] */
|
|
acc += (q31_t) S->state[2] << 15;
|
|
|
|
/* saturate the output */
|
|
out = (q15_t) (__SSAT((acc >> 15), 16));
|
|
|
|
/* Update state */
|
|
S->state[1] = S->state[0];
|
|
S->state[0] = in;
|
|
S->state[2] = out;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
}
|
|
|
|
/**
|
|
* @} end of PID group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix inverse.
|
|
* @param[in] src points to the instance of the input floating-point matrix structure.
|
|
* @param[out] dst points to the instance of the output floating-point matrix structure.
|
|
* @return The function returns ARM_MATH_SIZE_MISMATCH, if the dimensions do not match.
|
|
* If the input matrix is singular (does not have an inverse), then the algorithm terminates and returns error status ARM_MATH_SINGULAR.
|
|
*/
|
|
arm_status arm_mat_inverse_f32(
|
|
const arm_matrix_instance_f32 * src,
|
|
arm_matrix_instance_f32 * dst);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point matrix inverse.
|
|
* @param[in] src points to the instance of the input floating-point matrix structure.
|
|
* @param[out] dst points to the instance of the output floating-point matrix structure.
|
|
* @return The function returns ARM_MATH_SIZE_MISMATCH, if the dimensions do not match.
|
|
* If the input matrix is singular (does not have an inverse), then the algorithm terminates and returns error status ARM_MATH_SINGULAR.
|
|
*/
|
|
arm_status arm_mat_inverse_f64(
|
|
const arm_matrix_instance_f64 * src,
|
|
arm_matrix_instance_f64 * dst);
|
|
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup clarke Vector Clarke Transform
|
|
* Forward Clarke transform converts the instantaneous stator phases into a two-coordinate time invariant vector.
|
|
* Generally the Clarke transform uses three-phase currents <code>Ia, Ib and Ic</code> to calculate currents
|
|
* in the two-phase orthogonal stator axis <code>Ialpha</code> and <code>Ibeta</code>.
|
|
* When <code>Ialpha</code> is superposed with <code>Ia</code> as shown in the figure below
|
|
* \image html clarke.gif Stator current space vector and its components in (a,b).
|
|
* and <code>Ia + Ib + Ic = 0</code>, in this condition <code>Ialpha</code> and <code>Ibeta</code>
|
|
* can be calculated using only <code>Ia</code> and <code>Ib</code>.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html clarkeFormula.gif
|
|
* where <code>Ia</code> and <code>Ib</code> are the instantaneous stator phases and
|
|
* <code>pIalpha</code> and <code>pIbeta</code> are the two coordinates of time invariant vector.
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Clarke transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup clarke
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @brief Floating-point Clarke transform
|
|
* @param[in] Ia input three-phase coordinate <code>a</code>
|
|
* @param[in] Ib input three-phase coordinate <code>b</code>
|
|
* @param[out] pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @return none
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_clarke_f32(
|
|
float32_t Ia,
|
|
float32_t Ib,
|
|
float32_t * pIalpha,
|
|
float32_t * pIbeta)
|
|
{
|
|
/* Calculate pIalpha using the equation, pIalpha = Ia */
|
|
*pIalpha = Ia;
|
|
|
|
/* Calculate pIbeta using the equation, pIbeta = (1/sqrt(3)) * Ia + (2/sqrt(3)) * Ib */
|
|
*pIbeta = ((float32_t) 0.57735026919 * Ia + (float32_t) 1.15470053838 * Ib);
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Clarke transform for Q31 version
|
|
@param[in] Ia input three-phase coordinate <code>a</code>
|
|
@param[in] Ib input three-phase coordinate <code>b</code>
|
|
@param[out] pIalpha points to output two-phase orthogonal vector axis alpha
|
|
@param[out] pIbeta points to output two-phase orthogonal vector axis beta
|
|
@return none
|
|
|
|
\par Scaling and Overflow Behavior
|
|
The function is implemented using an internal 32-bit accumulator.
|
|
The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
There is saturation on the addition, hence there is no risk of overflow.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_clarke_q31(
|
|
q31_t Ia,
|
|
q31_t Ib,
|
|
q31_t * pIalpha,
|
|
q31_t * pIbeta)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Calculating pIalpha from Ia by equation pIalpha = Ia */
|
|
*pIalpha = Ia;
|
|
|
|
/* Intermediate product is calculated by (1/(sqrt(3)) * Ia) */
|
|
product1 = (q31_t) (((q63_t) Ia * 0x24F34E8B) >> 30);
|
|
|
|
/* Intermediate product is calculated by (2/sqrt(3) * Ib) */
|
|
product2 = (q31_t) (((q63_t) Ib * 0x49E69D16) >> 30);
|
|
|
|
/* pIbeta is calculated by adding the intermediate products */
|
|
*pIbeta = __QADD(product1, product2);
|
|
}
|
|
|
|
/**
|
|
* @} end of clarke group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup inv_clarke Vector Inverse Clarke Transform
|
|
* Inverse Clarke transform converts the two-coordinate time invariant vector into instantaneous stator phases.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html clarkeInvFormula.gif
|
|
* where <code>pIa</code> and <code>pIb</code> are the instantaneous stator phases and
|
|
* <code>Ialpha</code> and <code>Ibeta</code> are the two coordinates of time invariant vector.
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Clarke transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup inv_clarke
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Inverse Clarke transform
|
|
* @param[in] Ialpha input two-phase orthogonal vector axis alpha
|
|
* @param[in] Ibeta input two-phase orthogonal vector axis beta
|
|
* @param[out] pIa points to output three-phase coordinate <code>a</code>
|
|
* @param[out] pIb points to output three-phase coordinate <code>b</code>
|
|
* @return none
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_inv_clarke_f32(
|
|
float32_t Ialpha,
|
|
float32_t Ibeta,
|
|
float32_t * pIa,
|
|
float32_t * pIb)
|
|
{
|
|
/* Calculating pIa from Ialpha by equation pIa = Ialpha */
|
|
*pIa = Ialpha;
|
|
|
|
/* Calculating pIb from Ialpha and Ibeta by equation pIb = -(1/2) * Ialpha + (sqrt(3)/2) * Ibeta */
|
|
*pIb = -0.5f * Ialpha + 0.8660254039f * Ibeta;
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Inverse Clarke transform for Q31 version
|
|
@param[in] Ialpha input two-phase orthogonal vector axis alpha
|
|
@param[in] Ibeta input two-phase orthogonal vector axis beta
|
|
@param[out] pIa points to output three-phase coordinate <code>a</code>
|
|
@param[out] pIb points to output three-phase coordinate <code>b</code>
|
|
@return none
|
|
|
|
\par Scaling and Overflow Behavior
|
|
The function is implemented using an internal 32-bit accumulator.
|
|
The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
There is saturation on the subtraction, hence there is no risk of overflow.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_inv_clarke_q31(
|
|
q31_t Ialpha,
|
|
q31_t Ibeta,
|
|
q31_t * pIa,
|
|
q31_t * pIb)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Calculating pIa from Ialpha by equation pIa = Ialpha */
|
|
*pIa = Ialpha;
|
|
|
|
/* Intermediate product is calculated by (1/(2*sqrt(3)) * Ia) */
|
|
product1 = (q31_t) (((q63_t) (Ialpha) * (0x40000000)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (1/sqrt(3) * pIb) */
|
|
product2 = (q31_t) (((q63_t) (Ibeta) * (0x6ED9EBA1)) >> 31);
|
|
|
|
/* pIb is calculated by subtracting the products */
|
|
*pIb = __QSUB(product2, product1);
|
|
}
|
|
|
|
/**
|
|
* @} end of inv_clarke group
|
|
*/
|
|
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup park Vector Park Transform
|
|
*
|
|
* Forward Park transform converts the input two-coordinate vector to flux and torque components.
|
|
* The Park transform can be used to realize the transformation of the <code>Ialpha</code> and the <code>Ibeta</code> currents
|
|
* from the stationary to the moving reference frame and control the spatial relationship between
|
|
* the stator vector current and rotor flux vector.
|
|
* If we consider the d axis aligned with the rotor flux, the diagram below shows the
|
|
* current vector and the relationship from the two reference frames:
|
|
* \image html park.gif "Stator current space vector and its component in (a,b) and in the d,q rotating reference frame"
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html parkFormula.gif
|
|
* where <code>Ialpha</code> and <code>Ibeta</code> are the stator vector components,
|
|
* <code>pId</code> and <code>pIq</code> are rotor vector components and <code>cosVal</code> and <code>sinVal</code> are the
|
|
* cosine and sine values of theta (rotor flux position).
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Park transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup park
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Park transform
|
|
* @param[in] Ialpha input two-phase vector coordinate alpha
|
|
* @param[in] Ibeta input two-phase vector coordinate beta
|
|
* @param[out] pId points to output rotor reference frame d
|
|
* @param[out] pIq points to output rotor reference frame q
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none
|
|
*
|
|
* The function implements the forward Park transform.
|
|
*
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_park_f32(
|
|
float32_t Ialpha,
|
|
float32_t Ibeta,
|
|
float32_t * pId,
|
|
float32_t * pIq,
|
|
float32_t sinVal,
|
|
float32_t cosVal)
|
|
{
|
|
/* Calculate pId using the equation, pId = Ialpha * cosVal + Ibeta * sinVal */
|
|
*pId = Ialpha * cosVal + Ibeta * sinVal;
|
|
|
|
/* Calculate pIq using the equation, pIq = - Ialpha * sinVal + Ibeta * cosVal */
|
|
*pIq = -Ialpha * sinVal + Ibeta * cosVal;
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Park transform for Q31 version
|
|
@param[in] Ialpha input two-phase vector coordinate alpha
|
|
@param[in] Ibeta input two-phase vector coordinate beta
|
|
@param[out] pId points to output rotor reference frame d
|
|
@param[out] pIq points to output rotor reference frame q
|
|
@param[in] sinVal sine value of rotation angle theta
|
|
@param[in] cosVal cosine value of rotation angle theta
|
|
@return none
|
|
|
|
\par Scaling and Overflow Behavior
|
|
The function is implemented using an internal 32-bit accumulator.
|
|
The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
There is saturation on the addition and subtraction, hence there is no risk of overflow.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_park_q31(
|
|
q31_t Ialpha,
|
|
q31_t Ibeta,
|
|
q31_t * pId,
|
|
q31_t * pIq,
|
|
q31_t sinVal,
|
|
q31_t cosVal)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
q31_t product3, product4; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Intermediate product is calculated by (Ialpha * cosVal) */
|
|
product1 = (q31_t) (((q63_t) (Ialpha) * (cosVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Ibeta * sinVal) */
|
|
product2 = (q31_t) (((q63_t) (Ibeta) * (sinVal)) >> 31);
|
|
|
|
|
|
/* Intermediate product is calculated by (Ialpha * sinVal) */
|
|
product3 = (q31_t) (((q63_t) (Ialpha) * (sinVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Ibeta * cosVal) */
|
|
product4 = (q31_t) (((q63_t) (Ibeta) * (cosVal)) >> 31);
|
|
|
|
/* Calculate pId by adding the two intermediate products 1 and 2 */
|
|
*pId = __QADD(product1, product2);
|
|
|
|
/* Calculate pIq by subtracting the two intermediate products 3 from 4 */
|
|
*pIq = __QSUB(product4, product3);
|
|
}
|
|
|
|
/**
|
|
* @} end of park group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @ingroup groupController
|
|
*/
|
|
|
|
/**
|
|
* @defgroup inv_park Vector Inverse Park transform
|
|
* Inverse Park transform converts the input flux and torque components to two-coordinate vector.
|
|
*
|
|
* The function operates on a single sample of data and each call to the function returns the processed output.
|
|
* The library provides separate functions for Q31 and floating-point data types.
|
|
* \par Algorithm
|
|
* \image html parkInvFormula.gif
|
|
* where <code>pIalpha</code> and <code>pIbeta</code> are the stator vector components,
|
|
* <code>Id</code> and <code>Iq</code> are rotor vector components and <code>cosVal</code> and <code>sinVal</code> are the
|
|
* cosine and sine values of theta (rotor flux position).
|
|
* \par Fixed-Point Behavior
|
|
* Care must be taken when using the Q31 version of the Park transform.
|
|
* In particular, the overflow and saturation behavior of the accumulator used must be considered.
|
|
* Refer to the function specific documentation below for usage guidelines.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup inv_park
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point Inverse Park transform
|
|
* @param[in] Id input coordinate of rotor reference frame d
|
|
* @param[in] Iq input coordinate of rotor reference frame q
|
|
* @param[out] pIalpha points to output two-phase orthogonal vector axis alpha
|
|
* @param[out] pIbeta points to output two-phase orthogonal vector axis beta
|
|
* @param[in] sinVal sine value of rotation angle theta
|
|
* @param[in] cosVal cosine value of rotation angle theta
|
|
* @return none
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_inv_park_f32(
|
|
float32_t Id,
|
|
float32_t Iq,
|
|
float32_t * pIalpha,
|
|
float32_t * pIbeta,
|
|
float32_t sinVal,
|
|
float32_t cosVal)
|
|
{
|
|
/* Calculate pIalpha using the equation, pIalpha = Id * cosVal - Iq * sinVal */
|
|
*pIalpha = Id * cosVal - Iq * sinVal;
|
|
|
|
/* Calculate pIbeta using the equation, pIbeta = Id * sinVal + Iq * cosVal */
|
|
*pIbeta = Id * sinVal + Iq * cosVal;
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Inverse Park transform for Q31 version
|
|
@param[in] Id input coordinate of rotor reference frame d
|
|
@param[in] Iq input coordinate of rotor reference frame q
|
|
@param[out] pIalpha points to output two-phase orthogonal vector axis alpha
|
|
@param[out] pIbeta points to output two-phase orthogonal vector axis beta
|
|
@param[in] sinVal sine value of rotation angle theta
|
|
@param[in] cosVal cosine value of rotation angle theta
|
|
@return none
|
|
|
|
@par Scaling and Overflow Behavior
|
|
The function is implemented using an internal 32-bit accumulator.
|
|
The accumulator maintains 1.31 format by truncating lower 31 bits of the intermediate multiplication in 2.62 format.
|
|
There is saturation on the addition, hence there is no risk of overflow.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_inv_park_q31(
|
|
q31_t Id,
|
|
q31_t Iq,
|
|
q31_t * pIalpha,
|
|
q31_t * pIbeta,
|
|
q31_t sinVal,
|
|
q31_t cosVal)
|
|
{
|
|
q31_t product1, product2; /* Temporary variables used to store intermediate results */
|
|
q31_t product3, product4; /* Temporary variables used to store intermediate results */
|
|
|
|
/* Intermediate product is calculated by (Id * cosVal) */
|
|
product1 = (q31_t) (((q63_t) (Id) * (cosVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Iq * sinVal) */
|
|
product2 = (q31_t) (((q63_t) (Iq) * (sinVal)) >> 31);
|
|
|
|
|
|
/* Intermediate product is calculated by (Id * sinVal) */
|
|
product3 = (q31_t) (((q63_t) (Id) * (sinVal)) >> 31);
|
|
|
|
/* Intermediate product is calculated by (Iq * cosVal) */
|
|
product4 = (q31_t) (((q63_t) (Iq) * (cosVal)) >> 31);
|
|
|
|
/* Calculate pIalpha by using the two intermediate products 1 and 2 */
|
|
*pIalpha = __QSUB(product1, product2);
|
|
|
|
/* Calculate pIbeta by using the two intermediate products 3 and 4 */
|
|
*pIbeta = __QADD(product4, product3);
|
|
}
|
|
|
|
/**
|
|
* @} end of Inverse park group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @ingroup groupInterpolation
|
|
*/
|
|
|
|
/**
|
|
* @defgroup LinearInterpolate Linear Interpolation
|
|
*
|
|
* Linear interpolation is a method of curve fitting using linear polynomials.
|
|
* Linear interpolation works by effectively drawing a straight line between two neighboring samples and returning the appropriate point along that line
|
|
*
|
|
* \par
|
|
* \image html LinearInterp.gif "Linear interpolation"
|
|
*
|
|
* \par
|
|
* A Linear Interpolate function calculates an output value(y), for the input(x)
|
|
* using linear interpolation of the input values x0, x1( nearest input values) and the output values y0 and y1(nearest output values)
|
|
*
|
|
* \par Algorithm:
|
|
* <pre>
|
|
* y = y0 + (x - x0) * ((y1 - y0)/(x1-x0))
|
|
* where x0, x1 are nearest values of input x
|
|
* y0, y1 are nearest values to output y
|
|
* </pre>
|
|
*
|
|
* \par
|
|
* This set of functions implements Linear interpolation process
|
|
* for Q7, Q15, Q31, and floating-point data types. The functions operate on a single
|
|
* sample of data and each call to the function returns a single processed value.
|
|
* <code>S</code> points to an instance of the Linear Interpolate function data structure.
|
|
* <code>x</code> is the input sample value. The functions returns the output value.
|
|
*
|
|
* \par
|
|
* if x is outside of the table boundary, Linear interpolation returns first value of the table
|
|
* if x is below input range and returns last value of table if x is above range.
|
|
*/
|
|
|
|
/**
|
|
* @addtogroup LinearInterpolate
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Process function for the floating-point Linear Interpolation Function.
|
|
* @param[in,out] S is an instance of the floating-point Linear Interpolation structure
|
|
* @param[in] x input sample to process
|
|
* @return y processed output sample.
|
|
*
|
|
*/
|
|
__STATIC_FORCEINLINE float32_t arm_linear_interp_f32(
|
|
arm_linear_interp_instance_f32 * S,
|
|
float32_t x)
|
|
{
|
|
float32_t y;
|
|
float32_t x0, x1; /* Nearest input values */
|
|
float32_t y0, y1; /* Nearest output values */
|
|
float32_t xSpacing = S->xSpacing; /* spacing between input values */
|
|
int32_t i; /* Index variable */
|
|
float32_t *pYData = S->pYData; /* pointer to output table */
|
|
|
|
/* Calculation of index */
|
|
i = (int32_t) ((x - S->x1) / xSpacing);
|
|
|
|
if (i < 0)
|
|
{
|
|
/* Iniatilize output for below specified range as least output value of table */
|
|
y = pYData[0];
|
|
}
|
|
else if ((uint32_t)i >= S->nValues)
|
|
{
|
|
/* Iniatilize output for above specified range as last output value of table */
|
|
y = pYData[S->nValues - 1];
|
|
}
|
|
else
|
|
{
|
|
/* Calculation of nearest input values */
|
|
x0 = S->x1 + i * xSpacing;
|
|
x1 = S->x1 + (i + 1) * xSpacing;
|
|
|
|
/* Read of nearest output values */
|
|
y0 = pYData[i];
|
|
y1 = pYData[i + 1];
|
|
|
|
/* Calculation of output */
|
|
y = y0 + (x - x0) * ((y1 - y0) / (x1 - x0));
|
|
|
|
}
|
|
|
|
/* returns output value */
|
|
return (y);
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q31 Linear Interpolation Function.
|
|
* @param[in] pYData pointer to Q31 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t arm_linear_interp_q31(
|
|
q31_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q31_t y; /* output */
|
|
q31_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
int32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
index = ((x & (q31_t)0xFFF00000) >> 20);
|
|
|
|
if (index >= (int32_t)(nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else if (index < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
else
|
|
{
|
|
/* 20 bits for the fractional part */
|
|
/* shift left by 11 to keep fract in 1.31 format */
|
|
fract = (x & 0x000FFFFF) << 11;
|
|
|
|
/* Read two nearest output values from the index in 1.31(q31) format */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1];
|
|
|
|
/* Calculation of y0 * (1-fract) and y is in 2.30 format */
|
|
y = ((q31_t) ((q63_t) y0 * (0x7FFFFFFF - fract) >> 32));
|
|
|
|
/* Calculation of y0 * (1-fract) + y1 *fract and y is in 2.30 format */
|
|
y += ((q31_t) (((q63_t) y1 * fract) >> 32));
|
|
|
|
/* Convert y to 1.31 format */
|
|
return (y << 1U);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q15 Linear Interpolation Function.
|
|
* @param[in] pYData pointer to Q15 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*
|
|
*/
|
|
__STATIC_FORCEINLINE q15_t arm_linear_interp_q15(
|
|
q15_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q63_t y; /* output */
|
|
q15_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
int32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
index = ((x & (int32_t)0xFFF00000) >> 20);
|
|
|
|
if (index >= (int32_t)(nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else if (index < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
else
|
|
{
|
|
/* 20 bits for the fractional part */
|
|
/* fract is in 12.20 format */
|
|
fract = (x & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1];
|
|
|
|
/* Calculation of y0 * (1-fract) and y is in 13.35 format */
|
|
y = ((q63_t) y0 * (0xFFFFF - fract));
|
|
|
|
/* Calculation of (y0 * (1-fract) + y1 * fract) and y is in 13.35 format */
|
|
y += ((q63_t) y1 * (fract));
|
|
|
|
/* convert y to 1.15 format */
|
|
return (q15_t) (y >> 20);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
*
|
|
* @brief Process function for the Q7 Linear Interpolation Function.
|
|
* @param[in] pYData pointer to Q7 Linear Interpolation table
|
|
* @param[in] x input sample to process
|
|
* @param[in] nValues number of table values
|
|
* @return y processed output sample.
|
|
*
|
|
* \par
|
|
* Input sample <code>x</code> is in 12.20 format which contains 12 bits for table index and 20 bits for fractional part.
|
|
* This function can support maximum of table size 2^12.
|
|
*/
|
|
__STATIC_FORCEINLINE q7_t arm_linear_interp_q7(
|
|
q7_t * pYData,
|
|
q31_t x,
|
|
uint32_t nValues)
|
|
{
|
|
q31_t y; /* output */
|
|
q7_t y0, y1; /* Nearest output values */
|
|
q31_t fract; /* fractional part */
|
|
uint32_t index; /* Index to read nearest output values */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
if (x < 0)
|
|
{
|
|
return (pYData[0]);
|
|
}
|
|
index = (x >> 20) & 0xfff;
|
|
|
|
if (index >= (nValues - 1))
|
|
{
|
|
return (pYData[nValues - 1]);
|
|
}
|
|
else
|
|
{
|
|
/* 20 bits for the fractional part */
|
|
/* fract is in 12.20 format */
|
|
fract = (x & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index and are in 1.7(q7) format */
|
|
y0 = pYData[index];
|
|
y1 = pYData[index + 1];
|
|
|
|
/* Calculation of y0 * (1-fract ) and y is in 13.27(q27) format */
|
|
y = ((y0 * (0xFFFFF - fract)));
|
|
|
|
/* Calculation of y1 * fract + y0 * (1-fract) and y is in 13.27(q27) format */
|
|
y += (y1 * fract);
|
|
|
|
/* convert y to 1.7(q7) format */
|
|
return (q7_t) (y >> 20);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @} end of LinearInterpolate group
|
|
*/
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for floating-point data.
|
|
* @param[in] x input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
float32_t arm_sin_f32(
|
|
float32_t x);
|
|
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for Q31 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
q31_t arm_sin_q31(
|
|
q31_t x);
|
|
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric sine function for Q15 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return sin(x).
|
|
*/
|
|
q15_t arm_sin_q15(
|
|
q15_t x);
|
|
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for floating-point data.
|
|
* @param[in] x input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
float32_t arm_cos_f32(
|
|
float32_t x);
|
|
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for Q31 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
q31_t arm_cos_q31(
|
|
q31_t x);
|
|
|
|
|
|
/**
|
|
* @brief Fast approximation to the trigonometric cosine function for Q15 data.
|
|
* @param[in] x Scaled input value in radians.
|
|
* @return cos(x).
|
|
*/
|
|
q15_t arm_cos_q15(
|
|
q15_t x);
|
|
|
|
|
|
/**
|
|
* @ingroup groupFastMath
|
|
*/
|
|
|
|
|
|
/**
|
|
* @defgroup SQRT Square Root
|
|
*
|
|
* Computes the square root of a number.
|
|
* There are separate functions for Q15, Q31, and floating-point data types.
|
|
* The square root function is computed using the Newton-Raphson algorithm.
|
|
* This is an iterative algorithm of the form:
|
|
* <pre>
|
|
* x1 = x0 - f(x0)/f'(x0)
|
|
* </pre>
|
|
* where <code>x1</code> is the current estimate,
|
|
* <code>x0</code> is the previous estimate, and
|
|
* <code>f'(x0)</code> is the derivative of <code>f()</code> evaluated at <code>x0</code>.
|
|
* For the square root function, the algorithm reduces to:
|
|
* <pre>
|
|
* x0 = in/2 [initial guess]
|
|
* x1 = 1/2 * ( x0 + in / x0) [each iteration]
|
|
* </pre>
|
|
*/
|
|
|
|
|
|
/**
|
|
* @addtogroup SQRT
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
@brief Floating-point square root function.
|
|
@param[in] in input value
|
|
@param[out] pOut square root of input value
|
|
@return execution status
|
|
- \ref ARM_MATH_SUCCESS : input value is positive
|
|
- \ref ARM_MATH_ARGUMENT_ERROR : input value is negative; *pOut is set to 0
|
|
*/
|
|
__STATIC_FORCEINLINE arm_status arm_sqrt_f32(
|
|
float32_t in,
|
|
float32_t * pOut)
|
|
{
|
|
if (in >= 0.0f)
|
|
{
|
|
#if defined ( __CC_ARM )
|
|
#if defined __TARGET_FPU_VFP
|
|
*pOut = __sqrtf(in);
|
|
#else
|
|
*pOut = sqrtf(in);
|
|
#endif
|
|
|
|
#elif defined ( __ICCARM__ )
|
|
#if defined __ARMVFP__
|
|
__ASM("VSQRT.F32 %0,%1" : "=t"(*pOut) : "t"(in));
|
|
#else
|
|
*pOut = sqrtf(in);
|
|
#endif
|
|
|
|
#else
|
|
*pOut = sqrtf(in);
|
|
#endif
|
|
|
|
return (ARM_MATH_SUCCESS);
|
|
}
|
|
else
|
|
{
|
|
*pOut = 0.0f;
|
|
return (ARM_MATH_ARGUMENT_ERROR);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
@brief Q31 square root function.
|
|
@param[in] in input value. The range of the input value is [0 +1) or 0x00000000 to 0x7FFFFFFF
|
|
@param[out] pOut points to square root of input value
|
|
@return execution status
|
|
- \ref ARM_MATH_SUCCESS : input value is positive
|
|
- \ref ARM_MATH_ARGUMENT_ERROR : input value is negative; *pOut is set to 0
|
|
*/
|
|
arm_status arm_sqrt_q31(
|
|
q31_t in,
|
|
q31_t * pOut);
|
|
|
|
|
|
/**
|
|
@brief Q15 square root function.
|
|
@param[in] in input value. The range of the input value is [0 +1) or 0x0000 to 0x7FFF
|
|
@param[out] pOut points to square root of input value
|
|
@return execution status
|
|
- \ref ARM_MATH_SUCCESS : input value is positive
|
|
- \ref ARM_MATH_ARGUMENT_ERROR : input value is negative; *pOut is set to 0
|
|
*/
|
|
arm_status arm_sqrt_q15(
|
|
q15_t in,
|
|
q15_t * pOut);
|
|
|
|
/**
|
|
* @brief Vector Floating-point square root function.
|
|
* @param[in] pIn input vector.
|
|
* @param[out] pOut vector of square roots of input elements.
|
|
* @param[in] len length of input vector.
|
|
* @return The function returns ARM_MATH_SUCCESS if input value is positive value or ARM_MATH_ARGUMENT_ERROR if
|
|
* <code>in</code> is negative value and returns zero output for negative values.
|
|
*/
|
|
void arm_vsqrt_f32(
|
|
float32_t * pIn,
|
|
float32_t * pOut,
|
|
uint16_t len);
|
|
|
|
void arm_vsqrt_q31(
|
|
q31_t * pIn,
|
|
q31_t * pOut,
|
|
uint16_t len);
|
|
|
|
void arm_vsqrt_q15(
|
|
q15_t * pIn,
|
|
q15_t * pOut,
|
|
uint16_t len);
|
|
|
|
/**
|
|
* @} end of SQRT group
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief floating-point Circular write function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularWrite_f32(
|
|
int32_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const int32_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0U;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if (wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = (uint16_t)wOffset;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* @brief floating-point Circular Read function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularRead_f32(
|
|
int32_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
int32_t * dst,
|
|
int32_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0U;
|
|
int32_t rOffset;
|
|
int32_t* dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
dst_end = dst_base + dst_length;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if (dst == dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update rOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if (rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q15 Circular write function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularWrite_q15(
|
|
q15_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const q15_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0U;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if (wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = (uint16_t)wOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q15 Circular Read function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularRead_q15(
|
|
q15_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
q15_t * dst,
|
|
q15_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0;
|
|
int32_t rOffset;
|
|
q15_t* dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
|
|
dst_end = dst_base + dst_length;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if (dst == dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if (rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q7 Circular write function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularWrite_q7(
|
|
q7_t * circBuffer,
|
|
int32_t L,
|
|
uint16_t * writeOffset,
|
|
int32_t bufferInc,
|
|
const q7_t * src,
|
|
int32_t srcInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0U;
|
|
int32_t wOffset;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location where the input samples to be copied */
|
|
wOffset = *writeOffset;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the input sample to the circular buffer */
|
|
circBuffer[wOffset] = *src;
|
|
|
|
/* Update the input pointer */
|
|
src += srcInc;
|
|
|
|
/* Circularly update wOffset. Watch out for positive and negative value */
|
|
wOffset += bufferInc;
|
|
if (wOffset >= L)
|
|
wOffset -= L;
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*writeOffset = (uint16_t)wOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q7 Circular Read function.
|
|
*/
|
|
__STATIC_FORCEINLINE void arm_circularRead_q7(
|
|
q7_t * circBuffer,
|
|
int32_t L,
|
|
int32_t * readOffset,
|
|
int32_t bufferInc,
|
|
q7_t * dst,
|
|
q7_t * dst_base,
|
|
int32_t dst_length,
|
|
int32_t dstInc,
|
|
uint32_t blockSize)
|
|
{
|
|
uint32_t i = 0;
|
|
int32_t rOffset;
|
|
q7_t* dst_end;
|
|
|
|
/* Copy the value of Index pointer that points
|
|
* to the current location from where the input samples to be read */
|
|
rOffset = *readOffset;
|
|
|
|
dst_end = dst_base + dst_length;
|
|
|
|
/* Loop over the blockSize */
|
|
i = blockSize;
|
|
|
|
while (i > 0U)
|
|
{
|
|
/* copy the sample from the circular buffer to the destination buffer */
|
|
*dst = circBuffer[rOffset];
|
|
|
|
/* Update the input pointer */
|
|
dst += dstInc;
|
|
|
|
if (dst == dst_end)
|
|
{
|
|
dst = dst_base;
|
|
}
|
|
|
|
/* Circularly update rOffset. Watch out for positive and negative value */
|
|
rOffset += bufferInc;
|
|
|
|
if (rOffset >= L)
|
|
{
|
|
rOffset -= L;
|
|
}
|
|
|
|
/* Decrement the loop counter */
|
|
i--;
|
|
}
|
|
|
|
/* Update the index pointer */
|
|
*readOffset = rOffset;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_power_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q63_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_power_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_power_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q63_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Sum of the squares of the elements of a Q7 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_power_q7(
|
|
const q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Mean value of a Q7 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_mean_q7(
|
|
const q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Mean value of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_mean_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Mean value of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_mean_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Mean value of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_mean_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Variance of the elements of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_var_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Variance of the elements of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_var_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Variance of the elements of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_var_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_rms_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_rms_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Root Mean Square of the elements of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_rms_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_std_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_std_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Standard deviation of the elements of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output value.
|
|
*/
|
|
void arm_std_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex magnitude
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_f32(
|
|
const float32_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q31 complex magnitude
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_q31(
|
|
const q31_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex magnitude
|
|
* @param[in] pSrc points to the complex input vector
|
|
* @param[out] pDst points to the real output vector
|
|
* @param[in] numSamples number of complex samples in the input vector
|
|
*/
|
|
void arm_cmplx_mag_q15(
|
|
const q15_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex dot product
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] realResult real part of the result returned here
|
|
* @param[out] imagResult imaginary part of the result returned here
|
|
*/
|
|
void arm_cmplx_dot_prod_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
uint32_t numSamples,
|
|
q31_t * realResult,
|
|
q31_t * imagResult);
|
|
|
|
|
|
/**
|
|
* @brief Q31 complex dot product
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] realResult real part of the result returned here
|
|
* @param[out] imagResult imaginary part of the result returned here
|
|
*/
|
|
void arm_cmplx_dot_prod_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
uint32_t numSamples,
|
|
q63_t * realResult,
|
|
q63_t * imagResult);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex dot product
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
* @param[out] realResult real part of the result returned here
|
|
* @param[out] imagResult imaginary part of the result returned here
|
|
*/
|
|
void arm_cmplx_dot_prod_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
uint32_t numSamples,
|
|
float32_t * realResult,
|
|
float32_t * imagResult);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex-by-real multiplication
|
|
* @param[in] pSrcCmplx points to the complex input vector
|
|
* @param[in] pSrcReal points to the real input vector
|
|
* @param[out] pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_real_q15(
|
|
const q15_t * pSrcCmplx,
|
|
const q15_t * pSrcReal,
|
|
q15_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q31 complex-by-real multiplication
|
|
* @param[in] pSrcCmplx points to the complex input vector
|
|
* @param[in] pSrcReal points to the real input vector
|
|
* @param[out] pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_real_q31(
|
|
const q31_t * pSrcCmplx,
|
|
const q31_t * pSrcReal,
|
|
q31_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex-by-real multiplication
|
|
* @param[in] pSrcCmplx points to the complex input vector
|
|
* @param[in] pSrcReal points to the real input vector
|
|
* @param[out] pCmplxDst points to the complex output vector
|
|
* @param[in] numSamples number of samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_real_f32(
|
|
const float32_t * pSrcCmplx,
|
|
const float32_t * pSrcReal,
|
|
float32_t * pCmplxDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Minimum value of a Q7 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] result is output pointer
|
|
* @param[in] index is the array index of the minimum value in the input buffer.
|
|
*/
|
|
void arm_min_q7(
|
|
const q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * result,
|
|
uint32_t * index);
|
|
|
|
|
|
/**
|
|
* @brief Minimum value of a Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output pointer
|
|
* @param[in] pIndex is the array index of the minimum value in the input buffer.
|
|
*/
|
|
void arm_min_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Minimum value of a Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output pointer
|
|
* @param[out] pIndex is the array index of the minimum value in the input buffer.
|
|
*/
|
|
void arm_min_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Minimum value of a floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
* @param[out] pResult is output pointer
|
|
* @param[out] pIndex is the array index of the minimum value in the input buffer.
|
|
*/
|
|
void arm_min_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Maximum value of a Q7 vector.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] pResult maximum value returned here
|
|
* @param[out] pIndex index of maximum value returned here
|
|
*/
|
|
void arm_max_q7(
|
|
const q7_t * pSrc,
|
|
uint32_t blockSize,
|
|
q7_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Maximum value of a Q15 vector.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] pResult maximum value returned here
|
|
* @param[out] pIndex index of maximum value returned here
|
|
*/
|
|
void arm_max_q15(
|
|
const q15_t * pSrc,
|
|
uint32_t blockSize,
|
|
q15_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Maximum value of a Q31 vector.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] pResult maximum value returned here
|
|
* @param[out] pIndex index of maximum value returned here
|
|
*/
|
|
void arm_max_q31(
|
|
const q31_t * pSrc,
|
|
uint32_t blockSize,
|
|
q31_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Maximum value of a floating-point vector.
|
|
* @param[in] pSrc points to the input buffer
|
|
* @param[in] blockSize length of the input vector
|
|
* @param[out] pResult maximum value returned here
|
|
* @param[out] pIndex index of maximum value returned here
|
|
*/
|
|
void arm_max_f32(
|
|
const float32_t * pSrc,
|
|
uint32_t blockSize,
|
|
float32_t * pResult,
|
|
uint32_t * pIndex);
|
|
|
|
|
|
/**
|
|
* @brief Q15 complex-by-complex multiplication
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_cmplx_q15(
|
|
const q15_t * pSrcA,
|
|
const q15_t * pSrcB,
|
|
q15_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Q31 complex-by-complex multiplication
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_cmplx_q31(
|
|
const q31_t * pSrcA,
|
|
const q31_t * pSrcB,
|
|
q31_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Floating-point complex-by-complex multiplication
|
|
* @param[in] pSrcA points to the first input vector
|
|
* @param[in] pSrcB points to the second input vector
|
|
* @param[out] pDst points to the output vector
|
|
* @param[in] numSamples number of complex samples in each vector
|
|
*/
|
|
void arm_cmplx_mult_cmplx_f32(
|
|
const float32_t * pSrcA,
|
|
const float32_t * pSrcB,
|
|
float32_t * pDst,
|
|
uint32_t numSamples);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q31 vector.
|
|
* @param[in] pSrc points to the floating-point input vector
|
|
* @param[out] pDst points to the Q31 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
*/
|
|
void arm_float_to_q31(
|
|
const float32_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q15 vector.
|
|
* @param[in] pSrc points to the floating-point input vector
|
|
* @param[out] pDst points to the Q15 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
*/
|
|
void arm_float_to_q15(
|
|
const float32_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the floating-point vector to Q7 vector.
|
|
* @param[in] pSrc points to the floating-point input vector
|
|
* @param[out] pDst points to the Q7 output vector
|
|
* @param[in] blockSize length of the input vector
|
|
*/
|
|
void arm_float_to_q7(
|
|
const float32_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q31_to_float(
|
|
const q31_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to Q15 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q31_to_q15(
|
|
const q31_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q31 vector to Q7 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q31_to_q7(
|
|
const q31_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q15_to_float(
|
|
const q15_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to Q31 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q15_to_q31(
|
|
const q15_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q15 vector to Q7 vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q15_to_q7(
|
|
const q15_t * pSrc,
|
|
q7_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to floating-point vector.
|
|
* @param[in] pSrc is input pointer
|
|
* @param[out] pDst is output pointer
|
|
* @param[in] blockSize is the number of samples to process
|
|
*/
|
|
void arm_q7_to_float(
|
|
const q7_t * pSrc,
|
|
float32_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to Q31 vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_q7_to_q31(
|
|
const q7_t * pSrc,
|
|
q31_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @brief Converts the elements of the Q7 vector to Q15 vector.
|
|
* @param[in] pSrc input pointer
|
|
* @param[out] pDst output pointer
|
|
* @param[in] blockSize number of samples to process
|
|
*/
|
|
void arm_q7_to_q15(
|
|
const q7_t * pSrc,
|
|
q15_t * pDst,
|
|
uint32_t blockSize);
|
|
|
|
|
|
/**
|
|
* @ingroup groupInterpolation
|
|
*/
|
|
|
|
/**
|
|
* @defgroup BilinearInterpolate Bilinear Interpolation
|
|
*
|
|
* Bilinear interpolation is an extension of linear interpolation applied to a two dimensional grid.
|
|
* The underlying function <code>f(x, y)</code> is sampled on a regular grid and the interpolation process
|
|
* determines values between the grid points.
|
|
* Bilinear interpolation is equivalent to two step linear interpolation, first in the x-dimension and then in the y-dimension.
|
|
* Bilinear interpolation is often used in image processing to rescale images.
|
|
* The CMSIS DSP library provides bilinear interpolation functions for Q7, Q15, Q31, and floating-point data types.
|
|
*
|
|
* <b>Algorithm</b>
|
|
* \par
|
|
* The instance structure used by the bilinear interpolation functions describes a two dimensional data table.
|
|
* For floating-point, the instance structure is defined as:
|
|
* <pre>
|
|
* typedef struct
|
|
* {
|
|
* uint16_t numRows;
|
|
* uint16_t numCols;
|
|
* float32_t *pData;
|
|
* } arm_bilinear_interp_instance_f32;
|
|
* </pre>
|
|
*
|
|
* \par
|
|
* where <code>numRows</code> specifies the number of rows in the table;
|
|
* <code>numCols</code> specifies the number of columns in the table;
|
|
* and <code>pData</code> points to an array of size <code>numRows*numCols</code> values.
|
|
* The data table <code>pTable</code> is organized in row order and the supplied data values fall on integer indexes.
|
|
* That is, table element (x,y) is located at <code>pTable[x + y*numCols]</code> where x and y are integers.
|
|
*
|
|
* \par
|
|
* Let <code>(x, y)</code> specify the desired interpolation point. Then define:
|
|
* <pre>
|
|
* XF = floor(x)
|
|
* YF = floor(y)
|
|
* </pre>
|
|
* \par
|
|
* The interpolated output point is computed as:
|
|
* <pre>
|
|
* f(x, y) = f(XF, YF) * (1-(x-XF)) * (1-(y-YF))
|
|
* + f(XF+1, YF) * (x-XF)*(1-(y-YF))
|
|
* + f(XF, YF+1) * (1-(x-XF))*(y-YF)
|
|
* + f(XF+1, YF+1) * (x-XF)*(y-YF)
|
|
* </pre>
|
|
* Note that the coordinates (x, y) contain integer and fractional components.
|
|
* The integer components specify which portion of the table to use while the
|
|
* fractional components control the interpolation processor.
|
|
*
|
|
* \par
|
|
* if (x,y) are outside of the table boundary, Bilinear interpolation returns zero output.
|
|
*/
|
|
|
|
|
|
/**
|
|
* @addtogroup BilinearInterpolate
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Floating-point bilinear interpolation.
|
|
* @param[in,out] S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate.
|
|
* @param[in] Y interpolation coordinate.
|
|
* @return out interpolated value.
|
|
*/
|
|
__STATIC_FORCEINLINE float32_t arm_bilinear_interp_f32(
|
|
const arm_bilinear_interp_instance_f32 * S,
|
|
float32_t X,
|
|
float32_t Y)
|
|
{
|
|
float32_t out;
|
|
float32_t f00, f01, f10, f11;
|
|
float32_t *pData = S->pData;
|
|
int32_t xIndex, yIndex, index;
|
|
float32_t xdiff, ydiff;
|
|
float32_t b1, b2, b3, b4;
|
|
|
|
xIndex = (int32_t) X;
|
|
yIndex = (int32_t) Y;
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if (xIndex < 0 || xIndex > (S->numRows - 1) || yIndex < 0 || yIndex > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* Calculation of index for two nearest points in X-direction */
|
|
index = (xIndex - 1) + (yIndex - 1) * S->numCols;
|
|
|
|
|
|
/* Read two nearest points in X-direction */
|
|
f00 = pData[index];
|
|
f01 = pData[index + 1];
|
|
|
|
/* Calculation of index for two nearest points in Y-direction */
|
|
index = (xIndex - 1) + (yIndex) * S->numCols;
|
|
|
|
|
|
/* Read two nearest points in Y-direction */
|
|
f10 = pData[index];
|
|
f11 = pData[index + 1];
|
|
|
|
/* Calculation of intermediate values */
|
|
b1 = f00;
|
|
b2 = f01 - f00;
|
|
b3 = f10 - f00;
|
|
b4 = f00 - f01 - f10 + f11;
|
|
|
|
/* Calculation of fractional part in X */
|
|
xdiff = X - xIndex;
|
|
|
|
/* Calculation of fractional part in Y */
|
|
ydiff = Y - yIndex;
|
|
|
|
/* Calculation of bi-linear interpolated output */
|
|
out = b1 + b2 * xdiff + b3 * ydiff + b4 * xdiff * ydiff;
|
|
|
|
/* return to application */
|
|
return (out);
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q31 bilinear interpolation.
|
|
* @param[in,out] S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
__STATIC_FORCEINLINE q31_t arm_bilinear_interp_q31(
|
|
arm_bilinear_interp_instance_q31 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q31_t out; /* Temporary output */
|
|
q31_t acc = 0; /* output */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
q31_t x1, x2, y1, y2; /* Nearest output values */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q31_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if (rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* shift left xfract by 11 to keep 1.31 format */
|
|
xfract = (X & 0x000FFFFF) << 11U;
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[(rI) + (int32_t)nCols * (cI) ];
|
|
x2 = pYData[(rI) + (int32_t)nCols * (cI) + 1];
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* shift left yfract by 11 to keep 1.31 format */
|
|
yfract = (Y & 0x000FFFFF) << 11U;
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[(rI) + (int32_t)nCols * (cI + 1) ];
|
|
y2 = pYData[(rI) + (int32_t)nCols * (cI + 1) + 1];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 3.29(q29) format */
|
|
out = ((q31_t) (((q63_t) x1 * (0x7FFFFFFF - xfract)) >> 32));
|
|
acc = ((q31_t) (((q63_t) out * (0x7FFFFFFF - yfract)) >> 32));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) x2 * (0x7FFFFFFF - yfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (xfract) >> 32));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) y1 * (0x7FFFFFFF - xfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (yfract) >> 32));
|
|
|
|
/* y2 * (xfract) * (yfract) in 3.29(q29) and adding to acc */
|
|
out = ((q31_t) ((q63_t) y2 * (xfract) >> 32));
|
|
acc += ((q31_t) ((q63_t) out * (yfract) >> 32));
|
|
|
|
/* Convert acc to 1.31(q31) format */
|
|
return ((q31_t)(acc << 2));
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q15 bilinear interpolation.
|
|
* @param[in,out] S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
__STATIC_FORCEINLINE q15_t arm_bilinear_interp_q15(
|
|
arm_bilinear_interp_instance_q15 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q63_t acc = 0; /* output */
|
|
q31_t out; /* Temporary output */
|
|
q15_t x1, x2, y1, y2; /* Nearest output values */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q15_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if (rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* xfract should be in 12.20 format */
|
|
xfract = (X & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI) ];
|
|
x2 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI) + 1];
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* yfract should be in 12.20 format */
|
|
yfract = (Y & 0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI + 1) ];
|
|
y2 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI + 1) + 1];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 13.51 format */
|
|
|
|
/* x1 is in 1.15(q15), xfract in 12.20 format and out is in 13.35 format */
|
|
/* convert 13.35 to 13.31 by right shifting and out is in 1.31 */
|
|
out = (q31_t) (((q63_t) x1 * (0xFFFFF - xfract)) >> 4U);
|
|
acc = ((q63_t) out * (0xFFFFF - yfract));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) x2 * (0xFFFFF - yfract)) >> 4U);
|
|
acc += ((q63_t) out * (xfract));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) y1 * (0xFFFFF - xfract)) >> 4U);
|
|
acc += ((q63_t) out * (yfract));
|
|
|
|
/* y2 * (xfract) * (yfract) in 1.51 and adding to acc */
|
|
out = (q31_t) (((q63_t) y2 * (xfract)) >> 4U);
|
|
acc += ((q63_t) out * (yfract));
|
|
|
|
/* acc is in 13.51 format and down shift acc by 36 times */
|
|
/* Convert out to 1.15 format */
|
|
return ((q15_t)(acc >> 36));
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Q7 bilinear interpolation.
|
|
* @param[in,out] S points to an instance of the interpolation structure.
|
|
* @param[in] X interpolation coordinate in 12.20 format.
|
|
* @param[in] Y interpolation coordinate in 12.20 format.
|
|
* @return out interpolated value.
|
|
*/
|
|
__STATIC_FORCEINLINE q7_t arm_bilinear_interp_q7(
|
|
arm_bilinear_interp_instance_q7 * S,
|
|
q31_t X,
|
|
q31_t Y)
|
|
{
|
|
q63_t acc = 0; /* output */
|
|
q31_t out; /* Temporary output */
|
|
q31_t xfract, yfract; /* X, Y fractional parts */
|
|
q7_t x1, x2, y1, y2; /* Nearest output values */
|
|
int32_t rI, cI; /* Row and column indices */
|
|
q7_t *pYData = S->pData; /* pointer to output table values */
|
|
uint32_t nCols = S->numCols; /* num of rows */
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
rI = ((X & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Input is in 12.20 format */
|
|
/* 12 bits for the table index */
|
|
/* Index value calculation */
|
|
cI = ((Y & (q31_t)0xFFF00000) >> 20);
|
|
|
|
/* Care taken for table outside boundary */
|
|
/* Returns zero output when values are outside table boundary */
|
|
if (rI < 0 || rI > (S->numRows - 1) || cI < 0 || cI > (S->numCols - 1))
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* xfract should be in 12.20 format */
|
|
xfract = (X & (q31_t)0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
x1 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI) ];
|
|
x2 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI) + 1];
|
|
|
|
/* 20 bits for the fractional part */
|
|
/* yfract should be in 12.20 format */
|
|
yfract = (Y & (q31_t)0x000FFFFF);
|
|
|
|
/* Read two nearest output values from the index */
|
|
y1 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI + 1) ];
|
|
y2 = pYData[((uint32_t)rI) + nCols * ((uint32_t)cI + 1) + 1];
|
|
|
|
/* Calculation of x1 * (1-xfract ) * (1-yfract) and acc is in 16.47 format */
|
|
out = ((x1 * (0xFFFFF - xfract)));
|
|
acc = (((q63_t) out * (0xFFFFF - yfract)));
|
|
|
|
/* x2 * (xfract) * (1-yfract) in 2.22 and adding to acc */
|
|
out = ((x2 * (0xFFFFF - yfract)));
|
|
acc += (((q63_t) out * (xfract)));
|
|
|
|
/* y1 * (1 - xfract) * (yfract) in 2.22 and adding to acc */
|
|
out = ((y1 * (0xFFFFF - xfract)));
|
|
acc += (((q63_t) out * (yfract)));
|
|
|
|
/* y2 * (xfract) * (yfract) in 2.22 and adding to acc */
|
|
out = ((y2 * (yfract)));
|
|
acc += (((q63_t) out * (xfract)));
|
|
|
|
/* acc in 16.47 format and down shift by 40 to convert to 1.7 format */
|
|
return ((q7_t)(acc >> 40));
|
|
}
|
|
|
|
/**
|
|
* @} end of BilinearInterpolate group
|
|
*/
|
|
|
|
|
|
/* SMMLAR */
|
|
#define multAcc_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((((q63_t) a) << 32) + ((q63_t) x * y) + 0x80000000LL ) >> 32)
|
|
|
|
/* SMMLSR */
|
|
#define multSub_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((((q63_t) a) << 32) - ((q63_t) x * y) + 0x80000000LL ) >> 32)
|
|
|
|
/* SMMULR */
|
|
#define mult_32x32_keep32_R(a, x, y) \
|
|
a = (q31_t) (((q63_t) x * y + 0x80000000LL ) >> 32)
|
|
|
|
/* SMMLA */
|
|
#define multAcc_32x32_keep32(a, x, y) \
|
|
a += (q31_t) (((q63_t) x * y) >> 32)
|
|
|
|
/* SMMLS */
|
|
#define multSub_32x32_keep32(a, x, y) \
|
|
a -= (q31_t) (((q63_t) x * y) >> 32)
|
|
|
|
/* SMMUL */
|
|
#define mult_32x32_keep32(a, x, y) \
|
|
a = (q31_t) (((q63_t) x * y ) >> 32)
|
|
|
|
|
|
#if defined ( __CC_ARM )
|
|
/* Enter low optimization region - place directly above function definition */
|
|
#if defined( __ARM_ARCH_7EM__ )
|
|
#define LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("push") \
|
|
_Pragma ("O1")
|
|
#else
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
/* Exit low optimization region - place directly after end of function definition */
|
|
#if defined ( __ARM_ARCH_7EM__ )
|
|
#define LOW_OPTIMIZATION_EXIT \
|
|
_Pragma ("pop")
|
|
#else
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#endif
|
|
|
|
/* Enter low optimization region - place directly above function definition */
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
|
|
/* Exit low optimization region - place directly after end of function definition */
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined (__ARMCC_VERSION ) && ( __ARMCC_VERSION >= 6010050 )
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined ( __GNUC__ )
|
|
#define LOW_OPTIMIZATION_ENTER \
|
|
__attribute__(( optimize("-O1") ))
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined ( __ICCARM__ )
|
|
/* Enter low optimization region - place directly above function definition */
|
|
#if defined ( __ARM_ARCH_7EM__ )
|
|
#define LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("optimize=low")
|
|
#else
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
/* Exit low optimization region - place directly after end of function definition */
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
|
|
/* Enter low optimization region - place directly above function definition */
|
|
#if defined ( __ARM_ARCH_7EM__ )
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER \
|
|
_Pragma ("optimize=low")
|
|
#else
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#endif
|
|
|
|
/* Exit low optimization region - place directly after end of function definition */
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined ( __TI_ARM__ )
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined ( __CSMC__ )
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#elif defined ( __TASKING__ )
|
|
#define LOW_OPTIMIZATION_ENTER
|
|
#define LOW_OPTIMIZATION_EXIT
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_ENTER
|
|
#define IAR_ONLY_LOW_OPTIMIZATION_EXIT
|
|
|
|
#endif
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/* Compiler specific diagnostic adjustment */
|
|
#if defined ( __CC_ARM )
|
|
|
|
#elif defined ( __ARMCC_VERSION ) && ( __ARMCC_VERSION >= 6010050 )
|
|
|
|
#elif defined ( __GNUC__ )
|
|
#pragma GCC diagnostic pop
|
|
|
|
#elif defined ( __ICCARM__ )
|
|
|
|
#elif defined ( __TI_ARM__ )
|
|
|
|
#elif defined ( __CSMC__ )
|
|
|
|
#elif defined ( __TASKING__ )
|
|
|
|
#elif defined ( _MSC_VER )
|
|
|
|
#else
|
|
#error Unknown compiler
|
|
#endif
|
|
|
|
#endif /* _ARM_MATH_H */
|
|
|
|
/**
|
|
*
|
|
* End of file.
|
|
*/
|