int avi_get_data_id (AviFormat format, int stream) { char fcc[5]; if (avi_get_format_type (format) == FCC("vids")) sprintf (fcc,"%2.2ddc",stream); else if (avi_get_format_type (format) == FCC("auds")) sprintf (fcc,"%2.2ddc",stream); else return 0; return FCC(fcc); }
AviError AVI_set_compress_option(AviMovie *movie, int option_type, int stream, AviOption option, void *opt_data) { int i; int useconds; (void)stream; /* unused */ if (movie->header->TotalFrames != 0) /* Can't change params after we have already started writing frames */ return AVI_ERROR_OPTION; switch (option_type) { case AVI_OPTION_TYPE_MAIN: switch (option) { case AVI_OPTION_WIDTH: movie->header->Width = *((int *) opt_data); movie->header->SuggestedBufferSize = movie->header->Width * movie->header->Height * 3; for (i = 0; i < movie->header->Streams; i++) { if (avi_get_format_type(movie->streams[i].format) == FCC("vids")) { ((AviBitmapInfoHeader *) movie->streams[i].sf)->Width = *((int *) opt_data); movie->streams[i].sh.SuggestedBufferSize = movie->header->SuggestedBufferSize; movie->streams[i].sh.right = *((int *) opt_data); ((AviBitmapInfoHeader *) movie->streams[i].sf)->SizeImage = movie->header->SuggestedBufferSize; fseek(movie->fp, movie->offset_table[1 + i * 2 + 1], SEEK_SET); awrite(movie, movie->streams[i].sf, 1, movie->streams[i].sf_size, movie->fp, AVI_BITMAPH); } } break; case AVI_OPTION_HEIGHT: movie->header->Height = *((int *) opt_data); movie->header->SuggestedBufferSize = movie->header->Width * movie->header->Height * 3; for (i = 0; i < movie->header->Streams; i++) { if (avi_get_format_type(movie->streams[i].format) == FCC("vids")) { ((AviBitmapInfoHeader *) movie->streams[i].sf)->Height = *((int *) opt_data); movie->streams[i].sh.SuggestedBufferSize = movie->header->SuggestedBufferSize; movie->streams[i].sh.bottom = *((int *) opt_data); ((AviBitmapInfoHeader *) movie->streams[i].sf)->SizeImage = movie->header->SuggestedBufferSize; fseek(movie->fp, movie->offset_table[1 + i * 2 + 1], SEEK_SET); awrite(movie, movie->streams[i].sf, 1, movie->streams[i].sf_size, movie->fp, AVI_BITMAPH); } } break; case AVI_OPTION_QUALITY: for (i = 0; i < movie->header->Streams; i++) { if (avi_get_format_type(movie->streams[i].format) == FCC("vids")) { movie->streams[i].sh.Quality = (*((int *) opt_data)) * 100; fseek(movie->fp, movie->offset_table[1 + i * 2 + 1], SEEK_SET); awrite(movie, movie->streams[i].sf, 1, movie->streams[i].sf_size, movie->fp, AVI_BITMAPH); } } break; case AVI_OPTION_FRAMERATE: useconds = (int)(1000000 / (*((double *) opt_data))); if (useconds) movie->header->MicroSecPerFrame = useconds; for (i = 0; i < movie->header->Streams; i++) { if (avi_get_format_type(movie->streams[i].format) == FCC("vids")) { movie->streams[i].sh.Scale = movie->header->MicroSecPerFrame; fseek(movie->fp, movie->offset_table[1 + i * 2 + 1], SEEK_SET); awrite(movie, movie->streams[i].sf, 1, movie->streams[i].sf_size, movie->fp, AVI_BITMAPH); } } break; } fseek(movie->fp, movie->offset_table[0], SEEK_SET); awrite(movie, movie->header, 1, sizeof(AviMainHeader), movie->fp, AVI_MAINH); break; case AVI_OPTION_TYPE_STRH: break; case AVI_OPTION_TYPE_STRF: break; default: return AVI_ERROR_OPTION; break; } return AVI_ERROR_NONE; }