rt-thread/bsp/synwit/libraries/SWM341_CSL/SWM341_StdPeriph_Driver/SWM341_jpeg.h

#ifndef __SWM341_JPEG_H__
#define __SWM341_JPEG_H__

#include <stdint.h>


typedef struct {
    uint8_t  DoneIEn;           // 解码完成中断使能
    uint8_t  ErrorIEn;          // 解码出错中断使能
} JPEG_InitStructure;


typedef struct {
    uint8_t  format;            // 解码输出格式，可取值JPEG_OUT_YUV、JPEG_OUT_YUVsp、JPEG_OUT_XRGB888、...

    /* for RGB output */
    uint8_t  dither;            // RGB565 dithering enable
    uint32_t RGBAddr;

    /* for YUV output */
    uint32_t YAddr;
    uint32_t CbAddr;
    uint32_t CrAddr;
} jpeg_outset_t;                // output setting


#define JPEG_OUT_YUV        0
#define JPEG_OUT_YUVsp      1   // semi-planar
#define JPEG_OUT_XRGB888    2
#define JPEG_OUT_RGB888     3
#define JPEG_OUT_RGB565     4
#define JPEG_OUT_YVU        (0 | (1 << 4))
#define JPEG_OUT_YVUsp      (1 | (1 << 4))
#define JPEG_OUT_XBGR888    (2 | (1 << 5))
#define JPEG_OUT_BGR888     (3 | (1 << 5))
#define JPEG_OUT_BGR565     (4 | (1 << 5))
#define JPEG_OUT_BGRX888    (2 | (1 << 6))
#define JPEG_OUT_RGBX888    (2 | (1 << 5) | (1 << 6))


#define JPEG_FMT_H2V2       0   // YUV420
#define JPEG_FMT_H2V1       1   // YUV422
#define JPEG_FMT_H1V1       2   // YUV444



#define JFIF_QTAB_MAX   3
#define JFIF_HTAB_MAX   2

typedef struct {
    uint16_t Width;
    uint16_t Height;

    struct {
        uint8_t id;             // 1：Y   2：Cb   3：Cr
        uint8_t hfactor;        // 颜色分量水平采样因子
        uint8_t vfactor;        // 颜色分量垂直采样因子
        uint8_t qtab_id;        // 颜色分量使用的量化表ID
        uint8_t htab_id_dc;     // 直流分量使用的霍夫曼表ID
        uint8_t htab_id_ac;     // 交流分量使用的霍夫曼表ID
    } CompInfo[3];              // Component Information
    uint8_t CompCnt;

    uint8_t QTable[JFIF_QTAB_MAX][64];
    uint8_t QTableCnt;

    struct {
        struct {
            uint16_t codeWord[16];
            uint8_t  codeLen[16];
            uint8_t  codeVal[16];
        } DC;

        struct {
            uint16_t codeWord[162];
            uint8_t  codeLen[162];
            uint8_t  codeVal[162];
        } AC;
    } HTable[JFIF_HTAB_MAX];
    uint8_t HTableCnt;

    uint32_t CodeAddr;          // 待解码数据
    uint32_t CodeLen;
} jfif_info_t;



void JPEG_Init(JPEG_TypeDef * JPEGx, JPEG_InitStructure * initStruct);
void JPEG_Decode(JPEG_TypeDef * JPEGx, jfif_info_t * jfif_info, jpeg_outset_t * jpeg_outset);
uint32_t JPEG_DecodeBusy(JPEG_TypeDef * JPEGx);


#endif //__SWM341_JPEG_H__