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[usbd] Add usb audio class.

This commit is contained in:
guozhanxin 2019-09-19 21:00:05 +08:00
parent cde81a296d
commit 98b1956937
5 changed files with 1841 additions and 0 deletions
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24
components/drivers/Kconfig
View File

@ -660,6 +660,9 @@ menu "Using USB"
config _RT_USB_DEVICE_WINUSB
bool "Enable to use device as winusb device"
select RT_USB_DEVICE_WINUSB
config _RT_USB_DEVICE_AUDIO
bool "Enable to use device as audio device"
select RT_USB_DEVICE_AUDIO
endchoice
if RT_USB_DEVICE_COMPOSITE
config RT_USB_DEVICE_CDC
@ -685,6 +688,9 @@ menu "Using USB"
config RT_USB_DEVICE_WINUSB
bool "Enable to use device as winusb device"
default n
config RT_USB_DEVICE_AUDIO
bool "Enable to use device as audio device"
default n
endif
if RT_USB_DEVICE_CDC
config RT_VCOM_TASK_STK_SIZE
@ -752,6 +758,24 @@ menu "Using USB"
bool "Use to HID device as media keyboard"
default y
endif
if RT_USB_DEVICE_AUDIO
config RT_USB_DEVICE_AUDIO_MIC
bool "Use usb mic device as audio device"
default n
if RT_USB_DEVICE_AUDIO_MIC
config RT_USBD_MIC_DEVICE_NAME
string "audio mic device name"
default "mic0"
endif
config RT_USB_DEVICE_AUDIO_SPEAKER
bool "Use usb speaker device as audio device"
default n
if RT_USB_DEVICE_AUDIO_SPEAKER
config RT_USBD_SPEAKER_DEVICE_NAME
string "audio speaker device name"
default "sound0"
endif
endif
endif
endmenu
endmenu

6
components/drivers/usb/usbdevice/SConscript
View File

@ -24,6 +24,12 @@ if GetDepend('RT_USB_DEVICE_RNDIS'):
if GetDepend('RT_USB_DEVICE_WINUSB'):
src += Glob('class/winusb.c')
if GetDepend('RT_USB_DEVICE_AUDIO_MIC'):
src += Glob('class/audio_mic.c')
if GetDepend('RT_USB_DEVICE_AUDIO_SPEAKER'):
src += Glob('class/audio_speaker.c')
CPPPATH = [cwd]

676
components/drivers/usb/usbdevice/class/audio.h Normal file
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@ -0,0 +1,676 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* <linux/usb/audio.h> -- USB Audio definitions.
*
* Copyright (C) 2006 Thumtronics Pty Ltd.
* Developed for Thumtronics by Grey Innovation
* Ben Williamson <ben.williamson@greyinnovation.com>
*
* This software is distributed under the terms of the GNU General Public
* License ("GPL") version 2, as published by the Free Software Foundation.
*
* This file holds USB constants and structures defined
* by the USB Device Class Definition for Audio Devices.
* Comments below reference relevant sections of that document:
*
* http://www.usb.org/developers/devclass_docs/audio10.pdf
*
* Types and defines in this file are either specific to version 1.0 of
* this standard or common for newer versions.
*/
#ifndef _UAPI__LINUX_USB_AUDIO_H
#define _UAPI__LINUX_USB_AUDIO_H
//#include <linux/types.h>
#include <rtthread.h>
typedef int8_t __s8;
typedef uint8_t __u8;
typedef int16_t __s16;
typedef uint16_t __u16;
typedef int32_t __s32;
typedef uint32_t __u32;
typedef int64_t __s64;
typedef uint64_t __u64;
#define UAC_USE_FEATURE_UNIT 0 /* Feature unit does not support */
/*
* Below are truly Linux-specific types that should never collide with
* any application/library that wants linux/types.h.
*/
#ifdef __CHECKER__
#define __bitwise__ __attribute__((bitwise))
#else
#define __bitwise__
#endif
#ifdef __CHECK_ENDIAN__
#define __bitwise __bitwise__
#else
#define __bitwise
#endif
typedef __u16 __bitwise __le16;
typedef __u16 __bitwise __be16;
typedef __u32 __bitwise __le32;
typedef __u32 __bitwise __be32;
typedef __u64 __bitwise __le64;
typedef __u64 __bitwise __be64;
typedef __u16 __bitwise __sum16;
typedef __u32 __bitwise __wsum;
/* bInterfaceProtocol values to denote the version of the standard used */
#define UAC_VERSION_1 0x00
#define UAC_VERSION_2 0x20
#define UAC_VERSION_3 0x30
/* A.2 Audio Interface Subclass Codes */
#define USB_SUBCLASS_AUDIOCONTROL 0x01
#define USB_SUBCLASS_AUDIOSTREAMING 0x02
#define USB_SUBCLASS_MIDISTREAMING 0x03
/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
#define UAC_HEADER 0x01
#define UAC_INPUT_TERMINAL 0x02
#define UAC_OUTPUT_TERMINAL 0x03
#define UAC_MIXER_UNIT 0x04
#define UAC_SELECTOR_UNIT 0x05
#define UAC_FEATURE_UNIT 0x06
#define UAC1_PROCESSING_UNIT 0x07
#define UAC1_EXTENSION_UNIT 0x08
/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
#define UAC_AS_GENERAL 0x01
#define UAC_FORMAT_TYPE 0x02
#define UAC_FORMAT_SPECIFIC 0x03
/* A.7 Processing Unit Process Types */
#define UAC_PROCESS_UNDEFINED 0x00
#define UAC_PROCESS_UP_DOWNMIX 0x01
#define UAC_PROCESS_DOLBY_PROLOGIC 0x02
#define UAC_PROCESS_STEREO_EXTENDER 0x03
#define UAC_PROCESS_REVERB 0x04
#define UAC_PROCESS_CHORUS 0x05
#define UAC_PROCESS_DYN_RANGE_COMP 0x06
/* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */
#define UAC_EP_GENERAL 0x01
/* A.9 Audio Class-Specific Request Codes */
#define UAC_SET_ 0x00
#define UAC_GET_ 0x80
#define UAC__CUR 0x1
#define UAC__MIN 0x2
#define UAC__MAX 0x3
#define UAC__RES 0x4
#define UAC__MEM 0x5
#define UAC_SET_CUR (UAC_SET_ | UAC__CUR)
#define UAC_GET_CUR (UAC_GET_ | UAC__CUR)
#define UAC_SET_MIN (UAC_SET_ | UAC__MIN)
#define UAC_GET_MIN (UAC_GET_ | UAC__MIN)
#define UAC_SET_MAX (UAC_SET_ | UAC__MAX)
#define UAC_GET_MAX (UAC_GET_ | UAC__MAX)
#define UAC_SET_RES (UAC_SET_ | UAC__RES)
#define UAC_GET_RES (UAC_GET_ | UAC__RES)
#define UAC_SET_MEM (UAC_SET_ | UAC__MEM)
#define UAC_GET_MEM (UAC_GET_ | UAC__MEM)
#define UAC_GET_STAT 0xff
/* A.10 Control Selector Codes */
/* A.10.1 Terminal Control Selectors */
#define UAC_TERM_COPY_PROTECT 0x01
/* A.10.2 Feature Unit Control Selectors */
#define UAC_FU_MUTE 0x01
#define UAC_FU_VOLUME 0x02
#define UAC_FU_BASS 0x03
#define UAC_FU_MID 0x04
#define UAC_FU_TREBLE 0x05
#define UAC_FU_GRAPHIC_EQUALIZER 0x06
#define UAC_FU_AUTOMATIC_GAIN 0x07
#define UAC_FU_DELAY 0x08
#define UAC_FU_BASS_BOOST 0x09
#define UAC_FU_LOUDNESS 0x0a
#define UAC_CONTROL_BIT(CS) (1 << ((CS) - 1))
/* A.10.3.1 Up/Down-mix Processing Unit Controls Selectors */
#define UAC_UD_ENABLE 0x01
#define UAC_UD_MODE_SELECT 0x02
/* A.10.3.2 Dolby Prologic (tm) Processing Unit Controls Selectors */
#define UAC_DP_ENABLE 0x01
#define UAC_DP_MODE_SELECT 0x02
/* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
#define UAC_3D_ENABLE 0x01
#define UAC_3D_SPACE 0x02
/* A.10.3.4 Reverberation Processing Unit Control Selectors */
#define UAC_REVERB_ENABLE 0x01
#define UAC_REVERB_LEVEL 0x02
#define UAC_REVERB_TIME 0x03
#define UAC_REVERB_FEEDBACK 0x04
/* A.10.3.5 Chorus Processing Unit Control Selectors */
#define UAC_CHORUS_ENABLE 0x01
#define UAC_CHORUS_LEVEL 0x02
#define UAC_CHORUS_RATE 0x03
#define UAC_CHORUS_DEPTH 0x04
/* A.10.3.6 Dynamic Range Compressor Unit Control Selectors */
#define UAC_DCR_ENABLE 0x01
#define UAC_DCR_RATE 0x02
#define UAC_DCR_MAXAMPL 0x03
#define UAC_DCR_THRESHOLD 0x04
#define UAC_DCR_ATTACK_TIME 0x05
#define UAC_DCR_RELEASE_TIME 0x06
/* A.10.4 Extension Unit Control Selectors */
#define UAC_XU_ENABLE 0x01
/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
#define UAC_MS_HEADER 0x01
#define UAC_MIDI_IN_JACK 0x02
#define UAC_MIDI_OUT_JACK 0x03
/* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */
#define UAC_MS_GENERAL 0x01
/* Terminals - 2.1 USB Terminal Types */
#define UAC_TERMINAL_UNDEFINED 0x100
#define UAC_TERMINAL_STREAMING 0x101
#define UAC_TERMINAL_VENDOR_SPEC 0x1FF
/* Terminal Control Selectors */
/* 4.3.2 Class-Specific AC Interface Descriptor */
struct uac1_ac_header_descriptor {
__u8 bLength; /* 8 + n */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* UAC_MS_HEADER */
__le16 bcdADC; /* 0x0100 */
__le16 wTotalLength; /* includes Unit and Terminal desc. */
__u8 bInCollection; /* n */
__u8 baInterfaceNr[]; /* [n] */
} __attribute__ ((packed));
#define UAC_DT_AC_HEADER_SIZE(n) (8 + (n))
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
struct uac1_ac_header_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__le16 bcdADC; \
__le16 wTotalLength; \
__u8 bInCollection; \
__u8 baInterfaceNr[n]; \
} __attribute__ ((packed))
/* 4.3.2.1 Input Terminal Descriptor */
struct uac_input_terminal_descriptor {
__u8 bLength; /* in bytes: 12 */
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
__u8 bDescriptorSubtype; /* INPUT_TERMINAL descriptor subtype */
__u8 bTerminalID; /* Constant uniquely terminal ID */
__le16 wTerminalType; /* USB Audio Terminal Types */
__u8 bAssocTerminal; /* ID of the Output Terminal associated */
__u8 bNrChannels; /* Number of logical output channels */
__le16 wChannelConfig;
__u8 iChannelNames;
__u8 iTerminal;
} __attribute__ ((packed));
#define UAC_DT_INPUT_TERMINAL_SIZE 12
/* Terminals - 2.2 Input Terminal Types */
#define UAC_INPUT_TERMINAL_UNDEFINED 0x200
#define UAC_INPUT_TERMINAL_MICROPHONE 0x201
#define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202
#define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203
#define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204
#define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205
#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
/* Terminals - control selectors */
#define UAC_TERMINAL_CS_COPY_PROTECT_CONTROL 0x01
/* 4.3.2.2 Output Terminal Descriptor */
struct uac1_output_terminal_descriptor {
__u8 bLength; /* in bytes: 9 */
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
__u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */
__u8 bTerminalID; /* Constant uniquely terminal ID */
__le16 wTerminalType; /* USB Audio Terminal Types */
__u8 bAssocTerminal; /* ID of the Input Terminal associated */
__u8 bSourceID; /* ID of the connected Unit or Terminal*/
__u8 iTerminal;
} __attribute__ ((packed));
#define UAC_DT_OUTPUT_TERMINAL_SIZE 9
/* Terminals - 2.3 Output Terminal Types */
#define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300
#define UAC_OUTPUT_TERMINAL_SPEAKER 0x301
#define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302
#define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303
#define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304
#define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305
#define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306
#define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307
/* Terminals - 2.4 Bi-directional Terminal Types */
#define UAC_BIDIR_TERMINAL_UNDEFINED 0x400
#define UAC_BIDIR_TERMINAL_HANDSET 0x401
#define UAC_BIDIR_TERMINAL_HEADSET 0x402
#define UAC_BIDIR_TERMINAL_SPEAKER_PHONE 0x403
#define UAC_BIDIR_TERMINAL_ECHO_SUPPRESSING 0x404
#define UAC_BIDIR_TERMINAL_ECHO_CANCELING 0x405
/* Set bControlSize = 2 as default setting */
#define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2)
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \
struct uac_feature_unit_descriptor_##ch { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bUnitID; \
__u8 bSourceID; \
__u8 bControlSize; \
__le16 bmaControls[ch + 1]; \
__u8 iFeature; \
} __attribute__ ((packed))
/* 4.3.2.3 Mixer Unit Descriptor */
struct uac_mixer_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *desc)
{
return desc->baSourceID[desc->bNrInPins];
}
static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
if (protocol == UAC_VERSION_1)
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
desc->baSourceID[desc->bNrInPins + 1];
else
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
(desc->baSourceID[desc->bNrInPins + 1]);
}
static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
return (protocol == UAC_VERSION_1) ?
desc->baSourceID[desc->bNrInPins + 3] :
desc->baSourceID[desc->bNrInPins + 5];
}
static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return &desc->baSourceID[desc->bNrInPins + 4];
case UAC_VERSION_2:
return &desc->baSourceID[desc->bNrInPins + 6];
case UAC_VERSION_3:
return &desc->baSourceID[desc->bNrInPins + 2];
default:
return NULL;
}
}
static inline __u16 uac3_mixer_unit_wClusterDescrID(struct uac_mixer_unit_descriptor *desc)
{
return (desc->baSourceID[desc->bNrInPins + 1] << 8) |
desc->baSourceID[desc->bNrInPins];
}
static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
/* 4.3.2.4 Selector Unit Descriptor */
struct uac_selector_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUintID;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_selector_unit_iSelector(struct uac_selector_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
#if UAC_USE_FEATURE_UNIT
/* 4.3.2.5 Feature Unit Descriptor */
struct uac_feature_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__u8 bSourceID;
__u8 bControlSize;
__u8 bmaControls[0]; /* variable length */
} __attribute__((packed));
static inline __u8 uac_feature_unit_iFeature(struct uac_feature_unit_descriptor *desc)
{
__u8 *raw = (__u8 *) desc;
return raw[desc->bLength - 1];
}
#endif
/* 4.3.2.6 Processing Unit Descriptors */
struct uac_processing_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__le16 wProcessType;
__u8 bNrInPins;
__u8 baSourceID[];
} __attribute__ ((packed));
static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_descriptor *desc)
{
return desc->baSourceID[desc->bNrInPins];
}
static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc,
int protocol)
{
if (protocol == UAC_VERSION_1)
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
desc->baSourceID[desc->bNrInPins + 1];
else
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
(desc->baSourceID[desc->bNrInPins + 1]);
}
static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc,
int protocol)
{
return (protocol == UAC_VERSION_1) ?
desc->baSourceID[desc->bNrInPins + 3] :
desc->baSourceID[desc->bNrInPins + 5];
}
static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return desc->baSourceID[desc->bNrInPins + 4];
case UAC_VERSION_2:
return 2; /* in UAC2, this value is constant */
case UAC_VERSION_3:
return 4; /* in UAC3, this value is constant */
default:
return 1;
}
}
static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return &desc->baSourceID[desc->bNrInPins + 5];
case UAC_VERSION_2:
return &desc->baSourceID[desc->bNrInPins + 6];
case UAC_VERSION_3:
return &desc->baSourceID[desc->bNrInPins + 2];
default:
return NULL;
}
}
static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
switch (protocol) {
case UAC_VERSION_1:
case UAC_VERSION_2:
default:
return *(uac_processing_unit_bmControls(desc, protocol)
+ control_size);
case UAC_VERSION_3:
return 0; /* UAC3 does not have this field */
}
}
static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
switch (protocol) {
case UAC_VERSION_1:
case UAC_VERSION_2:
default:
return uac_processing_unit_bmControls(desc, protocol)
+ control_size + 1;
case UAC_VERSION_3:
return uac_processing_unit_bmControls(desc, protocol)
+ control_size;
}
}
/*
* Extension Unit (XU) has almost compatible layout with Processing Unit, but
* on UAC2, it has a different bmControls size (bControlSize); it's 1 byte for
* XU while 2 bytes for PU. The last iExtension field is a one-byte index as
* well as iProcessing field of PU.
*/
static inline __u8 uac_extension_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
int protocol)
{
switch (protocol) {
case UAC_VERSION_1:
return desc->baSourceID[desc->bNrInPins + 4];
case UAC_VERSION_2:
return 1; /* in UAC2, this value is constant */
case UAC_VERSION_3:
return 4; /* in UAC3, this value is constant */
default:
return 1;
}
}
static inline __u8 uac_extension_unit_iExtension(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_extension_unit_bControlSize(desc, protocol);
switch (protocol) {
case UAC_VERSION_1:
case UAC_VERSION_2:
default:
return *(uac_processing_unit_bmControls(desc, protocol)
+ control_size);
case UAC_VERSION_3:
return 0; /* UAC3 does not have this field */
}
}
/* 4.5.2 Class-Specific AS Interface Descriptor */
struct uac1_as_header_descriptor {
__u8 bLength; /* in bytes: 7 */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* AS_GENERAL */
__u8 bTerminalLink; /* Terminal ID of connected Terminal */
__u8 bDelay; /* Delay introduced by the data path */
__le16 wFormatTag; /* The Audio Data Format */
} __attribute__ ((packed));
#define UAC_DT_AS_HEADER_SIZE 7
/* Formats - A.1.1 Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_I_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I_PCM 0x1
#define UAC_FORMAT_TYPE_I_PCM8 0x2
#define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3
#define UAC_FORMAT_TYPE_I_ALAW 0x4
#define UAC_FORMAT_TYPE_I_MULAW 0x5
struct uac_format_type_i_continuous_descriptor {
__u8 bLength; /* in bytes: 8 + (ns * 3) */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
__u8 bFormatType; /* FORMAT_TYPE_1 */
__u8 bNrChannels; /* physical channels in the stream */
__u8 bSubframeSize; /* */
__u8 bBitResolution;
__u8 bSamFreqType;
__u8 tLowerSamFreq[3];
__u8 tUpperSamFreq[3];
} __attribute__ ((packed));
#define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14
struct uac_format_type_i_discrete_descriptor {
__u8 bLength; /* in bytes: 8 + (ns * 3) */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
__u8 bFormatType; /* FORMAT_TYPE_1 */
__u8 bNrChannels; /* physical channels in the stream */
__u8 bSubframeSize; /* */
__u8 bBitResolution;
__u8 bSamFreqType;
__u8 tSamFreq[][3];
} __attribute__ ((packed));
#define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \
struct uac_format_type_i_discrete_descriptor_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
__u8 bFormatType; \
__u8 bNrChannels; \
__u8 bSubframeSize; \
__u8 bBitResolution; \
__u8 bSamFreqType; \
__u8 tSamFreq[n][3]; \
} __attribute__ ((packed))
#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
struct uac_format_type_i_ext_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__u8 bSubslotSize;
__u8 bBitResolution;
__u8 bHeaderLength;
__u8 bControlSize;
__u8 bSideBandProtocol;
} __attribute__((packed));
/* Formats - Audio Data Format Type I Codes */
#define UAC_FORMAT_TYPE_II_MPEG 0x1001
#define UAC_FORMAT_TYPE_II_AC3 0x1002
struct uac_format_type_ii_discrete_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__le16 wMaxBitRate;
__le16 wSamplesPerFrame;
__u8 bSamFreqType;
__u8 tSamFreq[][3];
} __attribute__((packed));
struct uac_format_type_ii_ext_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bFormatType;
__le16 wMaxBitRate;
__le16 wSamplesPerFrame;
__u8 bHeaderLength;
__u8 bSideBandProtocol;
} __attribute__((packed));
/* type III */
#define UAC_FORMAT_TYPE_III_IEC1937_AC3 0x2001
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG1_LAYER1 0x2002
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_NOEXT 0x2003
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_EXT 0x2004
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER1_LS 0x2005
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER23_LS 0x2006
/* Formats - A.2 Format Type Codes */
#define UAC_FORMAT_TYPE_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I 0x1
#define UAC_FORMAT_TYPE_II 0x2
#define UAC_FORMAT_TYPE_III 0x3
#define UAC_EXT_FORMAT_TYPE_I 0x81
#define UAC_EXT_FORMAT_TYPE_II 0x82
#define UAC_EXT_FORMAT_TYPE_III 0x83
struct uac_iso_endpoint_descriptor {
__u8 bLength; /* in bytes: 7 */
__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */
__u8 bDescriptorSubtype; /* EP_GENERAL */
__u8 bmAttributes;
__u8 bLockDelayUnits;
__le16 wLockDelay;
} __attribute__((packed));
#define UAC_ISO_ENDPOINT_DESC_SIZE 7
#define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01
#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
/* status word format (3.7.1.1) */
#define UAC1_STATUS_TYPE_ORIG_MASK 0x0f
#define UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF 0x0
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_IF 0x1
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_EP 0x2
#define UAC1_STATUS_TYPE_IRQ_PENDING (1 << 7)
#define UAC1_STATUS_TYPE_MEM_CHANGED (1 << 6)
struct uac1_status_word {
__u8 bStatusType;
__u8 bOriginator;
} __attribute__((packed));
#endif /* _UAPI__LINUX_USB_AUDIO_H */

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components/drivers/usb/usbdevice/class/audio_mic.c Normal file
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/*
* Copyright (c) 2006-2019, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-09-07 flybreak the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtservice.h>
#include <rtdevice.h>
#include "drivers/usb_device.h"
#include "audio.h"
#define DBG_TAG "usbd.audio.mic"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define RECORD_SAMPLERATE 16000
#define RECORD_CHANNEL 1
#define RESOLUTION_BITS 16
#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
#define RECORD_PER_MS_SZ ((RECORD_SAMPLERATE * RECORD_CHANNEL * RESOLUTION_BYTE) / 1000)
#define RECORD_BUFFER_SZ (RECORD_PER_MS_SZ * 20) /* 20ms */
#if defined(RT_USBD_MIC_DEVICE_NAME)
#define MIC_DEVICE_NAME RT_USBD_MIC_DEVICE_NAME
#else
#define MIC_DEVICE_NAME "mic0"
#endif
#define EVENT_RECORD_START (1 << 0)
#define EVENT_RECORD_STOP (1 << 1)
#define EVENT_RECORD_DATA (1 << 2)
/*
* uac mic descriptor define
*/
#define UAC_CS_INTERFACE 0x24
#define UAC_CS_ENDPOINT 0x25
#define UAC_MAX_PACKET_SIZE 64
#define UAC_EP_MAX_PACKET_SIZE 32
#define UAC_CHANNEL_NUM RECORD_CHANNEL
#define UAC_INTR_NUM 1
#define UAC_CH_NUM 1
#define UAC_FORMAT_NUM 1
struct uac_ac_descriptor
{
#ifdef RT_USB_DEVICE_COMPOSITE
struct uiad_descriptor iad_desc;
#endif
struct uinterface_descriptor intf_desc;
DECLARE_UAC_AC_HEADER_DESCRIPTOR(UAC_INTR_NUM) hdr_desc;
struct uac_input_terminal_descriptor it_desc;
struct uac1_output_terminal_descriptor ot_desc;
#if UAC_USE_FEATURE_UNIT
DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(UAC_CH_NUM) feature_unit_desc;
#endif
};
struct uac_as_descriptor
{
struct uinterface_descriptor intf_desc;
struct uac1_as_header_descriptor hdr_desc;
DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(UAC_FORMAT_NUM) format_type_desc;
struct uendpoint_descriptor ep_desc;
struct uac_iso_endpoint_descriptor as_ep_desc;
};
/*
* uac mic device type
*/
struct uac_audio_mic
{
rt_device_t dev;
rt_event_t event;
rt_uint8_t *buffer;
rt_uint32_t buffer_index;
uep_t ep;
};
static struct uac_audio_mic mic;
ALIGN(4)
static struct udevice_descriptor dev_desc =
{
USB_DESC_LENGTH_DEVICE, //bLength;
USB_DESC_TYPE_DEVICE, //type;
USB_BCD_VERSION, //bcdUSB;
USB_CLASS_DEVICE, //bDeviceClass;
0x00, //bDeviceSubClass;
0x00, //bDeviceProtocol;
UAC_MAX_PACKET_SIZE, //bMaxPacketSize0;
_VENDOR_ID, //idVendor;
_PRODUCT_ID, //idProduct;
USB_BCD_DEVICE, //bcdDevice;
USB_STRING_MANU_INDEX, //iManufacturer;
USB_STRING_PRODUCT_INDEX, //iProduct;
USB_STRING_SERIAL_INDEX, //iSerialNumber;Unused.
USB_DYNAMIC, //bNumConfigurations;
};
//FS and HS needed
ALIGN(4)
static struct usb_qualifier_descriptor dev_qualifier =
{
sizeof(dev_qualifier), //bLength
USB_DESC_TYPE_DEVICEQUALIFIER, //bDescriptorType
0x0200, //bcdUSB
USB_CLASS_AUDIO, //bDeviceClass
0x00, //bDeviceSubClass
0x00, //bDeviceProtocol
64, //bMaxPacketSize0
0x01, //bNumConfigurations
0,
};
ALIGN(4)
const static char *_ustring[] =
{
"Language",
"RT-Thread Team.",
"Microphone",
"32021919830108",
"Configuration",
"Interface",
};
ALIGN(4)
static struct uac_ac_descriptor ac_desc =
{
#ifdef RT_USB_DEVICE_COMPOSITE
/* Interface Association Descriptor */
{
USB_DESC_LENGTH_IAD,
USB_DESC_TYPE_IAD,
USB_DYNAMIC,
0x02,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
},
#endif
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x00,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOCONTROL,
0x00,
0x00,
},
/* Header Descriptor */
{
UAC_DT_AC_HEADER_SIZE(UAC_INTR_NUM),
UAC_CS_INTERFACE,
UAC_HEADER,
0x0100, /* Version: 1.00 */
0x001E, /* Total length: 30 */
0x01, /* Total number of interfaces: 1 */
{0x01}, /* Interface number: 1 */
},
/* Input Terminal Descriptor */
{
UAC_DT_INPUT_TERMINAL_SIZE,
UAC_CS_INTERFACE,
UAC_INPUT_TERMINAL,
0x01, /* Terminal ID: 1 */
0x0201, /* Terminal Type: Microphone (0x0201) */
0x00, /* Assoc Terminal: 0 */
0x01, /* Number Channels: 1 */
0x0000, /* Channel Config: 0x0000 */
0x00, /* Channel Names: 0 */
0x00, /* Terminal: 0 */
},
/* Output Terminal Descriptor */
{
UAC_DT_OUTPUT_TERMINAL_SIZE,
UAC_CS_INTERFACE,
UAC_OUTPUT_TERMINAL,
0x02, /* Terminal ID: 2 */
0x0101, /* Terminal Type: USB Streaming (0x0101) */
0x00, /* Assoc Terminal: 0 */
0x01, /* Source ID: 1 */
0x00, /* Terminal: 0 */
},
#if UAC_USE_FEATURE_UNIT
/* Feature unit Descriptor */
{
UAC_DT_FEATURE_UNIT_SIZE(UAC_CH_NUM),
UAC_CS_INTERFACE,
UAC_FEATURE_UNIT,
0x02,
0x0101,
0x00,
0x01,
},
#endif
};
ALIGN(4)
static struct uinterface_descriptor as_desc0 =
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x00,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
};
ALIGN(4)
static struct uac_as_descriptor as_desc =
{
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x01,
0x01,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
},
/* General AS Descriptor */
{
UAC_DT_AS_HEADER_SIZE,
UAC_CS_INTERFACE,
UAC_AS_GENERAL,
0x02, /* Terminal ID: 2 */
0x01, /* Interface delay in frames: 1 */
UAC_FORMAT_TYPE_I_PCM,
},
/* Format type i Descriptor */
{
UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(UAC_FORMAT_NUM),
UAC_CS_INTERFACE,
UAC_FORMAT_TYPE,
UAC_FORMAT_TYPE_I,
UAC_CHANNEL_NUM,
2, /* Subframe Size: 2 */
RESOLUTION_BITS,
0x01, /* Samples Frequence Type: 1 */
{0}, /* Samples Frequence */
},
/* Endpoint Descriptor */
{
USB_DESC_LENGTH_ENDPOINT,
USB_DESC_TYPE_ENDPOINT,
USB_DYNAMIC | USB_DIR_IN,
USB_EP_ATTR_ISOC,
UAC_EP_MAX_PACKET_SIZE,
0x01,
},
/* AS Endpoint Descriptor */
{
UAC_ISO_ENDPOINT_DESC_SIZE,
UAC_CS_ENDPOINT,
UAC_MS_GENERAL,
},
};
void mic_entry(void *parameter)
{
struct rt_audio_caps caps = {0};
rt_uint32_t e, index;
mic.buffer = rt_malloc(RECORD_BUFFER_SZ);
if (mic.buffer == RT_NULL)
{
LOG_E("malloc failed");
goto __exit;
}
mic.dev = rt_device_find(MIC_DEVICE_NAME);
if (mic.dev == RT_NULL)
{
LOG_E("can't find device:%s", MIC_DEVICE_NAME);
goto __exit;
}
while (1)
{
if (rt_event_recv(mic.event, EVENT_RECORD_START,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
1000, &e) != RT_EOK)
{
continue;
}
LOG_D("record start");
rt_device_open(mic.dev, RT_DEVICE_OFLAG_RDONLY);
caps.main_type = AUDIO_TYPE_INPUT;
caps.sub_type = AUDIO_DSP_PARAM;
caps.udata.config.samplerate = RECORD_SAMPLERATE;
caps.udata.config.channels = RECORD_CHANNEL;
caps.udata.config.samplebits = RESOLUTION_BITS;
rt_device_control(mic.dev, AUDIO_CTL_CONFIGURE, &caps);
while (1)
{
if (rt_event_recv(mic.event, EVENT_RECORD_DATA | EVENT_RECORD_STOP,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
1000, &e) != RT_EOK)
{
continue;
}
if (e & EVENT_RECORD_DATA)
{
index = (mic.buffer_index >= RECORD_BUFFER_SZ / 2) ? 0 : (RECORD_BUFFER_SZ / 2);
rt_device_read(mic.dev, 0, mic.buffer + index, RECORD_BUFFER_SZ / 2);
}
else if (e & EVENT_RECORD_STOP)
{
break;
}
}
LOG_D("record stop");
rt_device_close(mic.dev);
}
__exit:
if (mic.buffer)
rt_free(mic.buffer);
}
static rt_err_t _record_start(ufunction_t func)
{
mic.ep->request.buffer = RT_NULL;
mic.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
mic.ep->request.req_type = UIO_REQUEST_WRITE;
rt_usbd_io_request(func->device, mic.ep, &mic.ep->request);
rt_event_send(mic.event, EVENT_RECORD_START);
return 0;
}
static rt_err_t _record_stop(ufunction_t func)
{
rt_event_send(mic.event, EVENT_RECORD_STOP);
return 0;
}
static rt_err_t _ep_data_in_handler(ufunction_t func, rt_size_t size)
{
RT_ASSERT(func != RT_NULL);
LOG_D("_ep_data_in_handler");
mic.ep->request.buffer = mic.buffer + mic.buffer_index;
mic.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
mic.ep->request.req_type = UIO_REQUEST_WRITE;
rt_usbd_io_request(func->device, mic.ep, &mic.ep->request);
mic.buffer_index += UAC_EP_MAX_PACKET_SIZE;
if (mic.buffer_index >= RECORD_BUFFER_SZ)
{
mic.buffer_index = 0;
rt_event_send(mic.event, EVENT_RECORD_DATA);
}
else if (mic.buffer_index == RECORD_BUFFER_SZ / 2)
{
rt_event_send(mic.event, EVENT_RECORD_DATA);
}
return RT_EOK;
}
static rt_err_t _interface_as_handler(ufunction_t func, ureq_t setup)
{
RT_ASSERT(func != RT_NULL);
RT_ASSERT(func->device != RT_NULL);
RT_ASSERT(setup != RT_NULL);
LOG_D("_interface_as_handler");
if ((setup->request_type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
{
switch (setup->bRequest)
{
case USB_REQ_GET_INTERFACE:
break;
case USB_REQ_SET_INTERFACE:
LOG_D("set interface handler");
if (setup->wValue == 1)
{
_record_start(func);
}
else if (setup->wValue == 0)
{
_record_stop(func);
}
break;
default:
LOG_D("unknown uac request 0x%x", setup->bRequest);
return -RT_ERROR;
}
}
return RT_EOK;
}
static rt_err_t _function_enable(ufunction_t func)
{
RT_ASSERT(func != RT_NULL);
LOG_D("uac function enable");
return RT_EOK;
}
static rt_err_t _function_disable(ufunction_t func)
{
RT_ASSERT(func != RT_NULL);
LOG_D("uac function disable");
_record_stop(func);
return RT_EOK;
}
static struct ufunction_ops ops =
{
_function_enable,
_function_disable,
RT_NULL,
};
/**
* This function will configure uac descriptor.
*
* @param comm the communication interface number.
* @param data the data interface number.
*
* @return RT_EOK on successful.
*/
static rt_err_t _uac_descriptor_config(struct uac_ac_descriptor *ac,
rt_uint8_t cintf_nr, struct uac_as_descriptor *as, rt_uint8_t sintf_nr)
{
ac->hdr_desc.baInterfaceNr[0] = sintf_nr;
#ifdef RT_USB_DEVICE_COMPOSITE
ac->iad_desc.bFirstInterface = cintf_nr;
#endif
return RT_EOK;
}
static rt_err_t _uac_samplerate_config(struct uac_as_descriptor *as, rt_uint32_t samplerate)
{
as->format_type_desc.tSamFreq[0][2] = samplerate >> 16 & 0xff;
as->format_type_desc.tSamFreq[0][1] = samplerate >> 8 & 0xff;
as->format_type_desc.tSamFreq[0][0] = samplerate & 0xff;
return RT_EOK;
}
/**
* This function will create a uac function instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
ufunction_t rt_usbd_function_uac_mic_create(udevice_t device)
{
ufunction_t func;
uintf_t intf_ac, intf_as;
ualtsetting_t setting_as0;
ualtsetting_t setting_ac, setting_as;
struct uac_as_descriptor *as_desc_t;
/* parameter check */
RT_ASSERT(device != RT_NULL);
/* set usb device string description */
rt_usbd_device_set_string(device, _ustring);
/* create a uac function */
func = rt_usbd_function_new(device, &dev_desc, &ops);
//not support HS
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
/* create interface */
intf_ac = rt_usbd_interface_new(device, RT_NULL);
intf_as = rt_usbd_interface_new(device, _interface_as_handler);
/* create alternate setting */
setting_ac = rt_usbd_altsetting_new(sizeof(struct uac_ac_descriptor));
setting_as0 = rt_usbd_altsetting_new(sizeof(struct uinterface_descriptor));
setting_as = rt_usbd_altsetting_new(sizeof(struct uac_as_descriptor));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor(setting_ac, &ac_desc,
(rt_off_t) & ((struct uac_ac_descriptor *)0)->intf_desc);
rt_usbd_altsetting_config_descriptor(setting_as0, &as_desc0, 0);
rt_usbd_altsetting_config_descriptor(setting_as, &as_desc,
(rt_off_t) & ((struct uac_as_descriptor *)0)->intf_desc);
/* configure the uac interface descriptor */
_uac_descriptor_config(setting_ac->desc, intf_ac->intf_num, setting_as->desc, intf_as->intf_num);
_uac_samplerate_config(setting_as->desc, RECORD_SAMPLERATE);
/* create endpoint */
as_desc_t = (struct uac_as_descriptor *)setting_as->desc;
mic.ep = rt_usbd_endpoint_new(&as_desc_t->ep_desc, _ep_data_in_handler);
/* add the endpoint to the alternate setting */
rt_usbd_altsetting_add_endpoint(setting_as, mic.ep);
/* add the alternate setting to the interface, then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_ac, setting_ac);
rt_usbd_set_altsetting(intf_ac, 0);
rt_usbd_interface_add_altsetting(intf_as, setting_as0);
rt_usbd_interface_add_altsetting(intf_as, setting_as);
rt_usbd_set_altsetting(intf_as, 0);
/* add the interface to the uac function */
rt_usbd_function_add_interface(func, intf_ac);
rt_usbd_function_add_interface(func, intf_as);
return func;
}
int audio_mic_init(void)
{
rt_thread_t mic_tid;
mic.event = rt_event_create("mic_event", RT_IPC_FLAG_FIFO);
mic_tid = rt_thread_create("mic_thread",
mic_entry, RT_NULL,
1024,
5, 10);
if (mic_tid != RT_NULL)
rt_thread_startup(mic_tid);
return RT_EOK;
}
INIT_COMPONENT_EXPORT(audio_mic_init);
/*
* register uac class
*/
struct udclass uac_class =
{
.rt_usbd_function_create = rt_usbd_function_uac_mic_create
};
int rt_usbd_uac_mic_class_register(void)
{
rt_usbd_class_register(&uac_class);
return 0;
}
INIT_PREV_EXPORT(rt_usbd_uac_mic_class_register);

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components/drivers/usb/usbdevice/class/audio_speaker.c Normal file
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/*
* Copyright (c) 2006-2019, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2019-09-19 flybreak the first version
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtservice.h>
#include <rtdevice.h>
#include "drivers/usb_device.h"
#include "audio.h"
#define DBG_TAG "usbd.audio.speaker"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#define AUDIO_SAMPLERATE 16000
#define AUDIO_CHANNEL 1
#define RESOLUTION_BITS 16
#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
#define AUDIO_PER_MS_SZ ((AUDIO_SAMPLERATE * AUDIO_CHANNEL * RESOLUTION_BYTE) / 1000)
#define AUDIO_BUFFER_SZ (AUDIO_PER_MS_SZ * 20) /* 20ms */
#if defined(RT_USBD_SPEAKER_DEVICE_NAME)
#define SPEAKER_DEVICE_NAME RT_USBD_SPEAKER_DEVICE_NAME
#else
#define SPEAKER_DEVICE_NAME "sound0"
#endif
#define EVENT_AUDIO_START (1 << 0)
#define EVENT_AUDIO_STOP (1 << 1)
#define EVENT_AUDIO_DATA (1 << 2)
/*
* uac speaker descriptor define
*/
#define UAC_CS_INTERFACE 0x24
#define UAC_CS_ENDPOINT 0x25
#define UAC_MAX_PACKET_SIZE 64
#define UAC_EP_MAX_PACKET_SIZE 32
#define UAC_CHANNEL_NUM AUDIO_CHANNEL
#define UAC_INTR_NUM 1
#define UAC_CH_NUM 1
#define UAC_FORMAT_NUM 1
struct uac_ac_descriptor
{
#ifdef RT_USB_DEVICE_COMPOSITE
struct uiad_descriptor iad_desc;
#endif
struct uinterface_descriptor intf_desc;
DECLARE_UAC_AC_HEADER_DESCRIPTOR(UAC_INTR_NUM) hdr_desc;
struct uac_input_terminal_descriptor it_desc;
struct uac1_output_terminal_descriptor ot_desc;
#if UAC_USE_FEATURE_UNIT
DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(UAC_CH_NUM) feature_unit_desc;
#endif
};
struct uac_as_descriptor
{
struct uinterface_descriptor intf_desc;
struct uac1_as_header_descriptor hdr_desc;
DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(UAC_FORMAT_NUM) format_type_desc;
struct uendpoint_descriptor ep_desc;
struct uac_iso_endpoint_descriptor as_ep_desc;
};
/*
* uac speaker device type
*/
struct uac_audio_speaker
{
rt_device_t dev;
rt_event_t event;
rt_uint8_t *buffer;
rt_uint32_t buffer_index;
uep_t ep;
};
static struct uac_audio_speaker speaker;
ALIGN(4)
static struct udevice_descriptor dev_desc =
{
USB_DESC_LENGTH_DEVICE, //bLength;
USB_DESC_TYPE_DEVICE, //type;
USB_BCD_VERSION, //bcdUSB;
USB_CLASS_DEVICE, //bDeviceClass;
0x00, //bDeviceSubClass;
0x00, //bDeviceProtocol;
UAC_MAX_PACKET_SIZE, //bMaxPacketSize0;
_VENDOR_ID, //idVendor;
_PRODUCT_ID, //idProduct;
USB_BCD_DEVICE, //bcdDevice;
USB_STRING_MANU_INDEX, //iManufacturer;
USB_STRING_PRODUCT_INDEX, //iProduct;
USB_STRING_SERIAL_INDEX, //iSerialNumber;Unused.
USB_DYNAMIC, //bNumConfigurations;
};
//FS and HS needed
ALIGN(4)
static struct usb_qualifier_descriptor dev_qualifier =
{
sizeof(dev_qualifier), //bLength
USB_DESC_TYPE_DEVICEQUALIFIER, //bDescriptorType
0x0200, //bcdUSB
USB_CLASS_AUDIO, //bDeviceClass
0x00, //bDeviceSubClass
0x00, //bDeviceProtocol
64, //bMaxPacketSize0
0x01, //bNumConfigurations
0,
};
ALIGN(4)
const static char *_ustring[] =
{
"Language",
"RT-Thread Team.",
"RT-Thread Speaker",
"32021919830108",
"Configuration",
"Interface",
};
ALIGN(4)
static struct uac_ac_descriptor ac_desc =
{
#ifdef RT_USB_DEVICE_COMPOSITE
/* Interface Association Descriptor */
{
USB_DESC_LENGTH_IAD,
USB_DESC_TYPE_IAD,
USB_DYNAMIC,
0x02,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
},
#endif
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x00,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOCONTROL,
0x00,
0x00,
},
/* Header Descriptor */
{
UAC_DT_AC_HEADER_SIZE(UAC_INTR_NUM),
UAC_CS_INTERFACE,
UAC_HEADER,
0x0100, /* Version: 1.00 */
0x0027, /* Total length: 39 */
0x01, /* Total number of interfaces: 1 */
{0x01}, /* Interface number: 1 */
},
/* Input Terminal Descriptor */
{
UAC_DT_INPUT_TERMINAL_SIZE,
UAC_CS_INTERFACE,
UAC_INPUT_TERMINAL,
0x01, /* Terminal ID: 1 */
0x0101, /* Terminal Type: USB Streaming (0x0101) */
0x00, /* Assoc Terminal: 0 */
0x01, /* Number Channels: 1 */
0x0000, /* Channel Config: 0x0000 */
0x00, /* Channel Names: 0 */
0x00, /* Terminal: 0 */
},
/* Output Terminal Descriptor */
{
UAC_DT_OUTPUT_TERMINAL_SIZE,
UAC_CS_INTERFACE,
UAC_OUTPUT_TERMINAL,
0x02, /* Terminal ID: 2 */
0x0302, /* Terminal Type: Headphones (0x0302) */
0x00, /* Assoc Terminal: 0 */
0x01, /* Source ID: 1 */
0x00, /* Terminal: 0 */
},
#if UAC_USE_FEATURE_UNIT
/* Feature unit Descriptor */
{
UAC_DT_FEATURE_UNIT_SIZE(UAC_CH_NUM),
UAC_CS_INTERFACE,
UAC_FEATURE_UNIT,
0x02,
0x0101,
0x00,
0x01,
},
#endif
};
ALIGN(4)
static struct uinterface_descriptor as_desc0 =
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x00,
0x00,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
};
ALIGN(4)
static struct uac_as_descriptor as_desc =
{
/* Interface Descriptor */
{
USB_DESC_LENGTH_INTERFACE,
USB_DESC_TYPE_INTERFACE,
USB_DYNAMIC,
0x01,
0x01,
USB_CLASS_AUDIO,
USB_SUBCLASS_AUDIOSTREAMING,
0x00,
0x00,
},
/* General AS Descriptor */
{
UAC_DT_AS_HEADER_SIZE,
UAC_CS_INTERFACE,
UAC_AS_GENERAL,
0x01, /* Terminal ID: 1 */
0x01, /* Interface delay in frames: 1 */
UAC_FORMAT_TYPE_I_PCM,
},
/* Format type i Descriptor */
{
UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(UAC_FORMAT_NUM),
UAC_CS_INTERFACE,
UAC_FORMAT_TYPE,
UAC_FORMAT_TYPE_I,
UAC_CHANNEL_NUM,
2, /* Subframe Size: 2 */
RESOLUTION_BITS,
0x01, /* Samples Frequence Type: 1 */
{0}, /* Samples Frequence */
},
/* Endpoint Descriptor */
{
USB_DESC_LENGTH_ENDPOINT,
USB_DESC_TYPE_ENDPOINT,
USB_DYNAMIC | USB_DIR_OUT,
USB_EP_ATTR_ISOC,
UAC_EP_MAX_PACKET_SIZE,
0x01,
},
/* AS Endpoint Descriptor */
{
UAC_ISO_ENDPOINT_DESC_SIZE,
UAC_CS_ENDPOINT,
UAC_MS_GENERAL,
},
};
void speaker_entry(void *parameter)
{
struct rt_audio_caps caps = {0};
rt_uint32_t e, index;
speaker.buffer = rt_malloc(AUDIO_BUFFER_SZ);
if (speaker.buffer == RT_NULL)
{
LOG_E("malloc failed");
goto __exit;
}
speaker.dev = rt_device_find(SPEAKER_DEVICE_NAME);
if (speaker.dev == RT_NULL)
{
LOG_E("can't find device:%s", SPEAKER_DEVICE_NAME);
goto __exit;
}
while (1)
{
if (rt_event_recv(speaker.event, EVENT_AUDIO_START,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
1000, &e) != RT_EOK)
{
continue;
}
LOG_D("record start");
rt_device_open(speaker.dev, RT_DEVICE_OFLAG_WRONLY);
caps.main_type = AUDIO_TYPE_OUTPUT;
caps.sub_type = AUDIO_DSP_PARAM;
caps.udata.config.samplerate = AUDIO_SAMPLERATE;
caps.udata.config.channels = AUDIO_CHANNEL;
caps.udata.config.samplebits = RESOLUTION_BITS;
rt_device_control(speaker.dev, AUDIO_CTL_CONFIGURE, &caps);
while (1)
{
if (rt_event_recv(speaker.event, EVENT_AUDIO_DATA | EVENT_AUDIO_STOP,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
1000, &e) != RT_EOK)
{
continue;
}
if (e & EVENT_AUDIO_DATA)
{
index = (speaker.buffer_index >= AUDIO_BUFFER_SZ / 2) ? 0 : (AUDIO_BUFFER_SZ / 2);
rt_device_write(speaker.dev, 0, speaker.buffer + index, AUDIO_BUFFER_SZ / 2);
}
else if (e & EVENT_AUDIO_STOP)
{
break;
}
}
LOG_D("record stop");
rt_device_close(speaker.dev);
}
__exit:
if (speaker.buffer)
rt_free(speaker.buffer);
}
static rt_err_t _audio_start(ufunction_t func)
{
speaker.ep->request.buffer = speaker.buffer;
speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
rt_event_send(speaker.event, EVENT_AUDIO_START);
return 0;
}
static rt_err_t _audio_stop(ufunction_t func)
{
rt_event_send(speaker.event, EVENT_AUDIO_STOP);
return 0;
}
static rt_err_t _ep_data_handler(ufunction_t func, rt_size_t size)
{
RT_ASSERT(func != RT_NULL);
LOG_D("_ep_data_handler");
speaker.ep->request.buffer = speaker.buffer + speaker.buffer_index;
speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
speaker.buffer_index += UAC_EP_MAX_PACKET_SIZE;
if (speaker.buffer_index >= AUDIO_BUFFER_SZ)
{
speaker.buffer_index = 0;
rt_event_send(speaker.event, EVENT_AUDIO_DATA);
}
else if (speaker.buffer_index == AUDIO_BUFFER_SZ / 2)
{
rt_event_send(speaker.event, EVENT_AUDIO_DATA);
}
return RT_EOK;
}
static rt_err_t _interface_as_handler(ufunction_t func, ureq_t setup)
{
RT_ASSERT(func != RT_NULL);
RT_ASSERT(func->device != RT_NULL);
RT_ASSERT(setup != RT_NULL);
LOG_D("_interface_as_handler");
if ((setup->request_type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
{
switch (setup->bRequest)
{
case USB_REQ_GET_INTERFACE:
break;
case USB_REQ_SET_INTERFACE:
LOG_D("set interface handler");
if (setup->wValue == 1)
{
_audio_start(func);
}
else if (setup->wValue == 0)
{
_audio_stop(func);
}
break;
default:
LOG_D("unknown uac request 0x%x", setup->bRequest);
return -RT_ERROR;
}
}
return RT_EOK;
}
static rt_err_t _function_enable(ufunction_t func)
{
RT_ASSERT(func != RT_NULL);
LOG_D("uac function enable");
return RT_EOK;
}
static rt_err_t _function_disable(ufunction_t func)
{
RT_ASSERT(func != RT_NULL);
LOG_D("uac function disable");
_audio_stop(func);
return RT_EOK;
}
static struct ufunction_ops ops =
{
_function_enable,
_function_disable,
RT_NULL,
};
/**
* This function will configure uac descriptor.
*
* @param comm the communication interface number.
* @param data the data interface number.
*
* @return RT_EOK on successful.
*/
static rt_err_t _uac_descriptor_config(struct uac_ac_descriptor *ac,
rt_uint8_t cintf_nr, struct uac_as_descriptor *as, rt_uint8_t sintf_nr)
{
ac->hdr_desc.baInterfaceNr[0] = sintf_nr;
#ifdef RT_USB_DEVICE_COMPOSITE
ac->iad_desc.bFirstInterface = cintf_nr;
#endif
return RT_EOK;
}
static rt_err_t _uac_samplerate_config(struct uac_as_descriptor *as, rt_uint32_t samplerate)
{
as->format_type_desc.tSamFreq[0][2] = samplerate >> 16 & 0xff;
as->format_type_desc.tSamFreq[0][1] = samplerate >> 8 & 0xff;
as->format_type_desc.tSamFreq[0][0] = samplerate & 0xff;
return RT_EOK;
}
/**
* This function will create a uac function instance.
*
* @param device the usb device object.
*
* @return RT_EOK on successful.
*/
ufunction_t rt_usbd_function_uac_speaker_create(udevice_t device)
{
ufunction_t func;
uintf_t intf_ac, intf_as;
ualtsetting_t setting_as0;
ualtsetting_t setting_ac, setting_as;
struct uac_as_descriptor *as_desc_t;
/* parameter check */
RT_ASSERT(device != RT_NULL);
/* set usb device string description */
rt_usbd_device_set_string(device, _ustring);
/* create a uac function */
func = rt_usbd_function_new(device, &dev_desc, &ops);
//not support HS
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
/* create interface */
intf_ac = rt_usbd_interface_new(device, RT_NULL);
intf_as = rt_usbd_interface_new(device, _interface_as_handler);
/* create alternate setting */
setting_ac = rt_usbd_altsetting_new(sizeof(struct uac_ac_descriptor));
setting_as0 = rt_usbd_altsetting_new(sizeof(struct uinterface_descriptor));
setting_as = rt_usbd_altsetting_new(sizeof(struct uac_as_descriptor));
/* config desc in alternate setting */
rt_usbd_altsetting_config_descriptor(setting_ac, &ac_desc,
(rt_off_t) & ((struct uac_ac_descriptor *)0)->intf_desc);
rt_usbd_altsetting_config_descriptor(setting_as0, &as_desc0, 0);
rt_usbd_altsetting_config_descriptor(setting_as, &as_desc,
(rt_off_t) & ((struct uac_as_descriptor *)0)->intf_desc);
/* configure the uac interface descriptor */
_uac_descriptor_config(setting_ac->desc, intf_ac->intf_num, setting_as->desc, intf_as->intf_num);
_uac_samplerate_config(setting_as->desc, AUDIO_SAMPLERATE);
/* create endpoint */
as_desc_t = (struct uac_as_descriptor *)setting_as->desc;
speaker.ep = rt_usbd_endpoint_new(&as_desc_t->ep_desc, _ep_data_handler);
/* add the endpoint to the alternate setting */
rt_usbd_altsetting_add_endpoint(setting_as, speaker.ep);
/* add the alternate setting to the interface, then set default setting of the interface */
rt_usbd_interface_add_altsetting(intf_ac, setting_ac);
rt_usbd_set_altsetting(intf_ac, 0);
rt_usbd_interface_add_altsetting(intf_as, setting_as0);
rt_usbd_interface_add_altsetting(intf_as, setting_as);
rt_usbd_set_altsetting(intf_as, 0);
/* add the interface to the uac function */
rt_usbd_function_add_interface(func, intf_ac);
rt_usbd_function_add_interface(func, intf_as);
return func;
}
int audio_speaker_init(void)
{
rt_thread_t speaker_tid;
speaker.event = rt_event_create("speaker_event", RT_IPC_FLAG_FIFO);
speaker_tid = rt_thread_create("speaker_thread",
speaker_entry, RT_NULL,
1024,
5, 10);
if (speaker_tid != RT_NULL)
rt_thread_startup(speaker_tid);
return RT_EOK;
}
INIT_COMPONENT_EXPORT(audio_speaker_init);
/*
* register uac class
*/
static struct udclass uac_speaker_class =
{
.rt_usbd_function_create = rt_usbd_function_uac_speaker_create
};
int rt_usbd_uac_speaker_class_register(void)
{
rt_usbd_class_register(&uac_speaker_class);
return 0;
}
INIT_PREV_EXPORT(rt_usbd_uac_speaker_class_register);