简单的jpeg转成avi的类

简单的jpeg转成avi的类(8)  void set_avi_size (int w, int h);

 int generate_avi ();
private:
 int file_size (string const& file);
 int files_size ();

 int initalize_header ();

 void print_quartet (FILE* file, DWORD i);
public:
 static DWORD const MAX_RIFF_SZ = 2147483648LL; /*Max avi file size, 2 GB limit*/
 static DWORD const JPEG_DATA_SZ = sizeof(DWORD) * 2;

 struct Jpeg_Data
 {
  DWORD size;
  DWORD offset;
  string name; /* i.e. variable length structure */

  Jpeg_Data () {}
  ~Jpeg_Data () {}

  friend bool operator< (Jpeg_Data const& a, Jpeg_Data const& o) {
   return a.name < o.name;
  }
  static bool lestthan (Jpeg_Data const* a, Jpeg_Data const* o) {
   return a->name < o->name;
  }
 };
protected:
 string avi_name_;
 WORD fps_;
 WORD frames_;
 WORD usec_per_frame;
 //file structure
 AVI_list_hdrl list_hdrl;
 //file list
 vector <Jpeg_Data*> jpeg_list;
 //option
 DWORD width;
 DWORD height;
 DWORD frames;
 unsigned int fps;
 long jpg_sz;
 size_t jpg_sz_64;
 size_t riff_sz_64;
 DWORD riff_sz;
};
#endif

//AviGenerator.cpp

#include "AviGenerator.h"
#include <iostream>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <algorithm>
#ifdef _WIN32
 #include <io.h>
 #include <errno.h>
#else
 #include <sys/param.h>
 #include <unistd.h>
#endif
using namespace std;

AviGenerator::AviGenerator(void)
 :fps (15) ,frames (1), jpg_sz (1), width (320), height (240)
{
 usec_per_frame = 1000000 / fps;