276 lines
13 KiB
C
276 lines
13 KiB
C
/******************************************************************************************************************************************
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* 文件名称: SWM341_jpeg.c
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* 功能说明: SWM341单片机的JPEG解码器驱动库
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 注意事项:
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* 版本日期: V1.1.0 2017年10月25日
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* 升级记录:
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*
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*
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM341.h"
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#include "SWM341_jpeg.h"
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#include <math.h>
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#include <string.h>
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/******************************************************************************************************************************************
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* 函数名称: JPEG_Init()
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* 功能说明: JPEG解码器初始化
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* 输 入: JPEG_TypeDef * JPEGx 指定要被设置的JPEG解码器，有效值包括JPEG
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* JPEG_InitStructure * initStruct 包含JPEG解码器相关设定值的结构体
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void JPEG_Init(JPEG_TypeDef * JPEGx, JPEG_InitStructure * initStruct)
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{
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switch((uint32_t)JPEGx)
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{
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case ((uint32_t)JPEG):
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SYS->CLKEN1 |= (0x01 << SYS_CLKEN1_JPEG_Pos);
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break;
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}
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JPEGx->IR = JPEG_IR_ICDONE_Msk |
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JPEG_IR_ICERROR_Msk;
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JPEGx->IR = ((initStruct->DoneIEn ? 1 : 0) << JPEG_IR_IEDONE_Pos) |
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((initStruct->ErrorIEn ? 1 : 0) << JPEG_IR_IEERROR_Pos);
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switch((uint32_t)JPEGx)
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{
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case ((uint32_t)JPEG):
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if(initStruct->DoneIEn | initStruct->ErrorIEn)
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{
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NVIC_EnableIRQ(JPEG_IRQn);
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}
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else
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{
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NVIC_DisableIRQ(JPEG_IRQn);
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}
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break;
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}
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}
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/******************************************************************************************************************************************
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* 函数名称: JPEG_Decode()
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* 功能说明: JPEG解码器解码
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* 输 入: JPEG_TypeDef * JPEGx 指定要被设置的JPEG解码器，有效值包括JPEG
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* jfif_info_t * jfif_info 要解码图像的信息
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* jpeg_outset_t * jpeg_outset 解码输出设定
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void JPEG_Decode(JPEG_TypeDef * JPEGx, jfif_info_t * jfif_info, jpeg_outset_t * jpeg_outset)
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{
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int32_t i, j;
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uint8_t hxvx;
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uint8_t out_rgb = ((jpeg_outset->format & 7) > 1 ? 1 : 0); // output rgb ?
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switch((jfif_info->CompInfo[0].hfactor << 4) | jfif_info->CompInfo[0].vfactor)
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{
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case 0x11: hxvx = JPEG_FMT_H1V1; break;
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case 0x21: hxvx = JPEG_FMT_H2V1; break;
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case 0x22: hxvx = JPEG_FMT_H2V2; break;
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default: return;
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}
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JPEGx->CFG = (hxvx << JPEG_CFG_SRCFMT_Pos) |
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(0 << JPEG_CFG_SCANMOD_Pos) |
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(0 << JPEG_CFG_NISCOMP_Pos) |
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(jfif_info->CompInfo[0].htab_id_dc << JPEG_CFG_HT1COMP_Pos) |
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(jfif_info->CompInfo[1].htab_id_dc << JPEG_CFG_HT2COMP_Pos) |
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(jfif_info->CompInfo[2].htab_id_dc << JPEG_CFG_HT3COMP_Pos) |
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(jfif_info->CompInfo[0].qtab_id << JPEG_CFG_QT1COMP_Pos) |
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(jfif_info->CompInfo[1].qtab_id << JPEG_CFG_QT2COMP_Pos) |
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(jfif_info->CompInfo[2].qtab_id << JPEG_CFG_QT3COMP_Pos) |
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(jpeg_outset->format << JPEG_CFG_OUTFMT_Pos) |
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(out_rgb << JPEG_CFG_YUV2RGB_Pos) |
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(jpeg_outset->dither << JPEG_CFG_565DITH_Pos);
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JPEGx->IMGSIZ = ((jfif_info->Width - 1) << JPEG_IMGSIZ_HPIX_Pos) |
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((jfif_info->Height - 1) << JPEG_IMGSIZ_VPIX_Pos);
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JPEGx->CSBASE = jfif_info->CodeAddr;
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JPEGx->CODLEN = jfif_info->CodeLen - 1;
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if(out_rgb)
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{
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JPEGx->RGBASE = jpeg_outset->RGBAddr;
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switch(jpeg_outset->format & 7)
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{
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case JPEG_OUT_XRGB888:
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JPEG->IMGSTR = jfif_info->Width << JPEG_IMGSTR_RGBLINE_Pos;
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break;
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case JPEG_OUT_RGB888:
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JPEG->IMGSTR = (int)ceil(jfif_info->Width*3/4.0) << JPEG_IMGSTR_RGBLINE_Pos;
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break;
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case JPEG_OUT_RGB565:
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JPEG->IMGSTR = (int)ceil(jfif_info->Width / 2.0) << JPEG_IMGSTR_RGBLINE_Pos;
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break;
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}
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}
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else
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{
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JPEGx->YBASE = jpeg_outset->YAddr;
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JPEGx->UBASE = jpeg_outset->CbAddr;
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JPEGx->VBASE = jpeg_outset->CrAddr;
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switch(((jpeg_outset->format & 7) << 4) | hxvx)
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{
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case (JPEG_OUT_YUV << 4) | JPEG_FMT_H1V1:
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JPEG->IMGSTR = ((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_YLINE_Pos) |
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((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_UVLINE_Pos);
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break;
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case (JPEG_OUT_YUV << 4) | JPEG_FMT_H2V1:
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case (JPEG_OUT_YUV << 4) | JPEG_FMT_H2V2:
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JPEG->IMGSTR = ((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_YLINE_Pos) |
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((int)ceil(jfif_info->Width / 8.0) << JPEG_IMGSTR_UVLINE_Pos);
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break;
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case (JPEG_OUT_YUVsp << 4) | JPEG_FMT_H1V1:
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JPEG->IMGSTR = ((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_YLINE_Pos) |
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((int)ceil(jfif_info->Width / 2.0) << JPEG_IMGSTR_UVLINE_Pos);
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break;
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case (JPEG_OUT_YUVsp << 4) | JPEG_FMT_H2V1:
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case (JPEG_OUT_YUVsp << 4) | JPEG_FMT_H2V2:
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JPEG->IMGSTR = ((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_YLINE_Pos) |
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((int)ceil(jfif_info->Width / 4.0) << JPEG_IMGSTR_UVLINE_Pos);
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break;
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}
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}
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for(i = 0; i < jfif_info->QTableCnt; i++)
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{
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for(j = 0; j < 16; j++)
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{
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JPEGx->QTABLE[i][j] = ((uint32_t *)&jfif_info->QTable[i])[j];
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}
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}
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for(i = 0; i < jfif_info->HTableCnt; i++)
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{
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/* DC Haffman Table */
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for(j = 0; j < 12; j += 2)
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{
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JPEGx->HTABLE[i].DC_CODEWORD[j/2] = (jfif_info->HTable[i].DC.codeWord[j] << (16 - jfif_info->HTable[i].DC.codeLen[j])) |
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(jfif_info->HTable[i].DC.codeWord[j+1] << (32 - jfif_info->HTable[i].DC.codeLen[j+1]));
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}
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for(j = 10; j > 1; j -= 2)
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{
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if((jfif_info->HTable[i].DC.codeWord[j+1] == 0) && (jfif_info->HTable[i].DC.codeWord[j] == 0))
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JPEGx->HTABLE[i].DC_CODEWORD[j/2] = 0xFFFFFFFF;
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else if(jfif_info->HTable[i].DC.codeWord[j+1] == 0)
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JPEGx->HTABLE[i].DC_CODEWORD[j/2] = 0xFFFF0000 | (jfif_info->HTable[i].DC.codeWord[j] << (16 - jfif_info->HTable[i].DC.codeLen[j]));
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else
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break;
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}
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JPEGx->HTABLE[i].DC_CODELEN[0] = ((jfif_info->HTable[i].DC.codeLen[0] ? jfif_info->HTable[i].DC.codeLen[0] - 1 : 0) << 0) |
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((jfif_info->HTable[i].DC.codeLen[1] ? jfif_info->HTable[i].DC.codeLen[1] - 1 : 0) << 4) |
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((jfif_info->HTable[i].DC.codeLen[2] ? jfif_info->HTable[i].DC.codeLen[2] - 1 : 0) << 8) |
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((jfif_info->HTable[i].DC.codeLen[3] ? jfif_info->HTable[i].DC.codeLen[3] - 1 : 0) << 12) |
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((jfif_info->HTable[i].DC.codeLen[4] ? jfif_info->HTable[i].DC.codeLen[4] - 1 : 0) << 16) |
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((jfif_info->HTable[i].DC.codeLen[5] ? jfif_info->HTable[i].DC.codeLen[5] - 1 : 0) << 20) |
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((jfif_info->HTable[i].DC.codeLen[6] ? jfif_info->HTable[i].DC.codeLen[6] - 1 : 0) << 24) |
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((jfif_info->HTable[i].DC.codeLen[7] ? jfif_info->HTable[i].DC.codeLen[7] - 1 : 0) << 28);
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JPEGx->HTABLE[i].DC_CODELEN[1] = ((jfif_info->HTable[i].DC.codeLen[8] ? jfif_info->HTable[i].DC.codeLen[8] - 1 : 0) << 0) |
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((jfif_info->HTable[i].DC.codeLen[9] ? jfif_info->HTable[i].DC.codeLen[9] - 1 : 0) << 4) |
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((jfif_info->HTable[i].DC.codeLen[10] ? jfif_info->HTable[i].DC.codeLen[10]- 1 : 0) << 8) |
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((jfif_info->HTable[i].DC.codeLen[11] ? jfif_info->HTable[i].DC.codeLen[11]- 1 : 0) << 12);
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JPEGx->HTABLE[i].DC_CODEVAL[0] = (jfif_info->HTable[i].DC.codeVal[0] << 0) |
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(jfif_info->HTable[i].DC.codeVal[1] << 4) |
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(jfif_info->HTable[i].DC.codeVal[2] << 8) |
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(jfif_info->HTable[i].DC.codeVal[3] << 12) |
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(jfif_info->HTable[i].DC.codeVal[4] << 16) |
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(jfif_info->HTable[i].DC.codeVal[5] << 20) |
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(jfif_info->HTable[i].DC.codeVal[6] << 24) |
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(jfif_info->HTable[i].DC.codeVal[7] << 28);
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JPEGx->HTABLE[i].DC_CODEVAL[1] = (jfif_info->HTable[i].DC.codeVal[8] << 0) |
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(jfif_info->HTable[i].DC.codeVal[9] << 4) |
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(jfif_info->HTable[i].DC.codeVal[10]<< 8) |
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(jfif_info->HTable[i].DC.codeVal[11]<< 12);
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/* AC Haffman Table */
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uint16_t minCode[16]; // mini code word for each lenght
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uint8_t minIndx[16]; // index of mincode
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uint8_t prelen; // preiou Len
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memset(minCode, 0, sizeof(minCode));
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memset(minIndx, 0, sizeof(minIndx));
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for(j = 0, prelen = 0; j < 162; j++)
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{
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if(jfif_info->HTable[i].AC.codeLen[j] == 0) break;
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if(jfif_info->HTable[i].AC.codeLen[j] != prelen)
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{
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minCode[jfif_info->HTable[i].AC.codeLen[j] - 1] = jfif_info->HTable[i].AC.codeWord[j] << (16 - jfif_info->HTable[i].AC.codeLen[j]);
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minIndx[jfif_info->HTable[i].AC.codeLen[j] - 1] = j;
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prelen = jfif_info->HTable[i].AC.codeLen[j];
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}
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}
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if(minCode[15] == 0) minCode[15] = 0xFFFF;
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for(j = 14; j > jfif_info->HTable[i].AC.codeLen[0] - 1; j--)
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{
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if(minCode[j] == 0) minCode[j] = minCode[j+1];
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}
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for(j = 0; j < 16; j += 2)
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{
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JPEGx->HTABLE[i].AC_CODEWORD[j/2] = (minCode[j] << 0) |
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(minCode[j+1] << 16);
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}
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for(j = 0; j < 16; j += 4)
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{
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JPEGx->HTABLE[i].AC_CODEADDR[j/4] = (minIndx[j] << 0) |
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(minIndx[j+1] << 8) |
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(minIndx[j+2] << 16) |
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(minIndx[j+3] << 24);
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}
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for(j = 0; j < 164; j += 4)
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{
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JPEGx->HTABLE[i].AC_CODEVAL[j/4] = (jfif_info->HTable[i].AC.codeVal[j] << 0) |
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(jfif_info->HTable[i].AC.codeVal[j+1] << 8) |
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(jfif_info->HTable[i].AC.codeVal[j+2] << 16) |
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(jfif_info->HTable[i].AC.codeVal[j+3] << 24);
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}
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}
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JPEGx->CR = (1 << JPEG_CR_LASTBUF_Pos) |
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(1 << JPEG_CR_START_Pos);
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}
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/******************************************************************************************************************************************
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* 函数名称: JPEG_DecodeBusy()
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* 功能说明: JPEG解码器忙查询
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* 输 入: JPEG_TypeDef * JPEGx 指定要被设置的JPEG解码器，有效值包括JPEG
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* 输 出: uint32_t 1 正在解码 0 空闲，未在解码
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t JPEG_DecodeBusy(JPEG_TypeDef * JPEGx)
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{
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return (JPEGx->SR & JPEG_SR_BUSY_Msk) ? 1 : 0;
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}
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