简单的jpeg转成avi的类

简单的jpeg转成avi的类(9) }

AviGenerator::~AviGenerator(void)
{
 for (vector<Jpeg_Data*>::iterator iter = this->jpeg_list.begin (); iter != jpeg_list.end (); ++iter) {
  Jpeg_Data* p = *iter;
  delete p;
 }
 this->jpeg_list.clear ();
}

void AviGenerator::set_avi_file (string const& file)
{
 this->avi_name_ = file;
}

void AviGenerator::set_fps (int fps)
{
 this->fps_ = fps;
 this->usec_per_frame = 1000000 / fps;
}

void AviGenerator::set_avi_size (int w, int h)
{
 this->width = w;
 this->height = h;
}

int AviGenerator::file_size (string const& file)
{
 int ret;
#ifdef _WIN32
 struct __stat64 result;
    if (-1 == _stat64 (file.c_str (), &result))
  return -1;
 ret = result.st_size;
#else
 struct stat s;
 if (-1 == stat(file.c_str (), &s))
  return -1;
 ret = s.st_size;
#endif
#ifdef DEBUG_VERSION
 cerr << file.c_str () << " size is " << ret << endl;
#endif
 return ret;
}

int AviGenerator::files_size ()
{
 int ret = 0;
 int tmp, it;
 for (vector<Jpeg_Data*>::iterator iter = jpeg_list.begin (); iter != jpeg_list.end (); ++iter) {
  it = (*iter)->size;
  tmp = it != 0?it:file_size ((*iter)->name.c_str ());
  ret += tmp;
  ret += (4 - (tmp % 4)) % 4;
 }
 return ret;
}

int AviGenerator::add_frame (string const& file)
{
 int size = file_size (file);
 if (size <= 0)
  return -1;
 struct Jpeg_Data* jpeg= new Jpeg_Data ();
 jpeg->name = file;
 jpeg->size = size;
 jpeg->offset = 0;
 this->jpeg_list.insert (jpeg_list.begin (), jpeg);
 return 0;
}

void AviGenerator::print_quartet (FILE* file, DWORD i)