jpeg_tool.h

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#ifndef  __JBXL_JPEG_TOOL_H_
#define  __JBXL_JPEG_TOOL_H_
 
#include "xtools.h"
 
#ifndef HAVE_JPEGLIB_H
#ifndef DISABLE_JPEG
#define DISABLE_JPEG
#endif
#endif
 
#if  defined(DISABLE_JPEG) || defined(DISABLE_JPEGLIB)
#undef  ENABLE_JPEGLIB      // for old version
#undef  ENABLE_JPEG
#endif
 
#ifndef HAVE_JPEGLIB_H
#ifndef DISABLE_JPEG
#define DISABLE_JPEG
#endif
#endif
 
#ifdef ENABLE_JPEGLIB
#define ENABLE_JPEG
#endif
 
 
#ifdef  ENABLE_JPEG
 
#include "gdata.h"
#include <jpeglib.h>
 
 
typedef struct
{
    int         xs;
    int         ys;
    int         col;
    int         state;
    JSAMPLE*    gp;
    JSAMPARRAY  img;
    //
} JPEGImage;
 
 
#if JPEG_LIB_VERSION < 80
 
typedef struct {
  struct jpeg_destination_mgr pub;  // public fields 
 
  unsigned char** outbuffer;        // target buffer 
  unsigned long*  outsize;
  unsigned char*  newbuffer;        // newly allocated buffer 
  JOCTET * buffer;                  // start of buffer 
  size_t bufsize;
} my_mem_destination_mgr;
 
typedef my_mem_destination_mgr * my_mem_dest_ptr;
 
#endif
 
 
 
JPEGImage  read_jpeg_file (const char* fname);
int        write_jpeg_file(const char* fname, JPEGImage* jp, int qulty);
int        write_jpeg_mem(unsigned char** buf, unsigned long* len, JPEGImage* jp, int qulty);
 
WSGraph    JPEGImage2WSGraph(JPEGImage jp);
BSGraph    JPEGImage2BSGraph(JPEGImage jp);
JPEGImage  WSGraph2JPEGImage(WSGraph vp);
JPEGImage  BSGraph2JPEGImage(BSGraph vp);
 
JPEGImage  make_JPEGImage(int xs, int ys, int col);
void       free_JPEGImage(JPEGImage* jp);
 
//
#if JPEG_LIB_VERSION < 80
 
METHODDEF(void)     mem_init_destination(j_compress_ptr cinfo);
METHODDEF(boolean)  mem_empty_output_buffer(j_compress_ptr cinfo);
METHODDEF(void)     mem_term_destination(j_compress_ptr cinfo);
GLOBAL(void)        jpeg_mem_dest(j_compress_ptr cinfo, unsigned char** buf, unsigned long* len);
 
#endif
 
 
#endif      // DISABLE_JPEG
#endif      // __JBXL_JPEG_TOOL_H_