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