avi_context.h

motion Jpeg 在SPI DSP平台优化好的代码

////////////////////////////////////////////////////////////////////////////////////////////////////
//
//                      avi_context.h 
//
//      Notice:         COPYRIGHT (C) STREAM PROCESSORS, INC. 2005-2007
//                      THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THE SPI
//                      END-USER LICENSE AGREEMENT (EULA). THE PROGRAM MAY ONLY
//                      BE USED IN A MANNER EXPLICITLY SPECIFIED IN THE EULA,
//                      WHICH INCLUDES LIMITATIONS ON COPYING, MODIFYING,
//                      REDISTRIBUTION AND WARANTIES. UNAUTHORIZED USE OF THIS
//                      PROGRAM IS STRICTLY PROHIBITED. YOU MAY OBTAIN A COPY OF
//                      THE EULA FROM WWW.STREAMPROCESSORS.COM. 
//    
////////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef _AVI_CONTEXT_H_
#define _AVI_CONTEXT_H_


////////////////////////////////////////////////////////////////////////////////
//          Constants
////////////////////////////////////////////////////////////////////////////////

#define AVIF_HASINDEX       (0x00000010)

//      Attributes and settings used by solution framework for JPEG DPAM

typedef struct AVI_LIST_HDR_T 
{
    unsigned char   id[4];          /* "LIST" */
    unsigned int    sz;             /* size of owning struct minus 8 */
    unsigned char   type[4];        /* type of list */
} AVI_LIST_HDR_T;

typedef struct AVI_DMLH_T 
{
    unsigned char   id[4];
    unsigned int    sz;
    unsigned int    frames;
} AVI_DMLH_T;

typedef struct AVI_ODML_T 
{
    AVI_LIST_HDR_T  list_hdr;
    AVI_DMLH_T      dmlh;
} AVI_ODML_T;

typedef struct AVI_STRH_T
{
    unsigned char   type[4];        /* stream type */
    unsigned char   handler[4];
    unsigned int    flags;
    unsigned int    priority;
    unsigned int    init_frames;     /* initial frames (???) */
    unsigned int    scale;
    unsigned int    rate;
    unsigned int    start;
    unsigned int    length;
    unsigned int    buff_sz;         /* suggested buffer size */
    unsigned int    quality;
    unsigned int    sample_sz;
} AVI_STRH_T;

typedef struct AVI_STRF_T
{       
    unsigned int    sz;
    unsigned int    width;
    unsigned int    height;
    unsigned int    planes_bit_cnt;
    unsigned char   compression[4];
    unsigned int    image_sz;
    unsigned int    xpels_meter;
    unsigned int    ypels_meter;
    unsigned int    num_colors;        /* used colors */
    unsigned int    imp_colors;        /* important colors */
} AVI_STRF_T;

typedef struct AVI_STRL_T 
{
    AVI_LIST_HDR_T  list_hdr;
    /* chunk strh */
    unsigned char   strh_id[4];
    unsigned int    strh_sz;
    AVI_STRH_T      strh;
    /* chunk strf */
    unsigned char   strf_id[4];
    unsigned int    strf_sz;
    AVI_STRF_T      strf;
    /* list odml */
    AVI_ODML_T      odml;
} AVI_STRL_T;

typedef struct AVI_AVIH_T 
{
    unsigned int    us_per_frame;	/* frame display rate (or 0L) */
    unsigned int    max_bytes_per_sec;	/* max. transfer rate */
    unsigned int    padding;	        /* pad to multiples of this size - normally 2K */
    unsigned int    flags;
    unsigned int    tot_frames;	    /* # frames in file */
    unsigned int    init_frames;
    unsigned int    streams;
    unsigned int    buff_sz;  
    unsigned int    width;
    unsigned int    height;
    unsigned int    reserved[4];
} AVI_AVIH_T;

typedef struct AVI_LIST_HDRL_T 
{
    AVI_LIST_HDR_T  list_hdr;
    /* chunk avih */
    unsigned char   avih_id[4];
    unsigned int    avih_sz;
    AVI_AVIH_T      avih;
    /* list strl */
    AVI_STRL_T      strl;
} AVI_LIST_HDRL_T;

typedef struct AVI_RIFF_T 
{
    AVI_LIST_HDR_T  riff_list_hdr;
    /* list hdrl */
    AVI_LIST_HDRL_T avi_list_hdrl;
    /* list movi */
    AVI_LIST_HDR_T  movi_list_hdr;
} AVI_RIFF_T;

typedef struct AVI_JPEG_HDR_T 
{
    unsigned char   jpeg_id[4];
    unsigned int    jpeg_sz;
    unsigned char   jpeg_hdr[6];
    unsigned char   avi_id[4];
} AVI_JPEG_HDR_T;

typedef struct _AVI_IDX_INFO_T  AVI_IDX_INFO_T;
struct _AVI_IDX_INFO_T 
{
    int             size;
    AVI_IDX_INFO_T  *next;
};

typedef struct AVI_IDX_HDR_T 
{
    unsigned char   idx_id[4];
    unsigned int    idx_sz;
} AVI_IDX_HDR_T;

typedef struct AVI_IDX_DATA_T 
{
    unsigned char   jpeg_id[4];
    unsigned int    unknwn;
    unsigned int    offset;
    unsigned int    jpeg_sz;
} AVI_IDX_DATA_T;

typedef struct AVI_CONTEXT_T 
{
    char            avi_filename[100];
    FILE            *f_avi_file;
    AVI_RIFF_T      avi_riff;
    AVI_IDX_HDR_T   avi_idx_hdr;
    AVI_IDX_DATA_T  avi_idx_data;
    AVI_JPEG_HDR_T  avi_jpeg_hdr;
    unsigned int    frames;
    unsigned int    jpeg_size;
    AVI_IDX_INFO_T  *p_start;
    AVI_IDX_INFO_T  *p_curr;
} AVI_CONTEXT_T;

#endif //_AVI_CONTEXT_H_