int quicktime_read_info(quicktime_t *file) { int result = 0, got_header = 0; int i, channel, trak_channel, track; int64_t start_position = quicktime_position(file); quicktime_atom_t leaf_atom; quicktime_trak_t *trak; char avi_avi[4]; int got_avi = 0; int got_asf = 0; quicktime_set_position(file, 0LL); /* Test file format */ do { file->use_avi = 1; file->use_asf = 1; result = quicktime_atom_read_header(file, &leaf_atom); if(!result && quicktime_atom_is(&leaf_atom, "RIFF")) { quicktime_read_data(file, avi_avi, 4); if(quicktime_match_32(avi_avi, "AVI ")) { got_avi = 1; } else { result = 0; break; } } else { result = 0; break; } }while(1); if(!got_avi) file->use_avi = 0; if(!got_asf) file->use_asf = 0; quicktime_set_position(file, 0LL); /* McRoweSoft AVI section */ if(file->use_avi) { //printf("quicktime_read_info 1\n"); /* Import first RIFF */ do { result = quicktime_atom_read_header(file, &leaf_atom); if(!result) { if(quicktime_atom_is(&leaf_atom, "RIFF")) { quicktime_read_riff(file, &leaf_atom); /* Return success */ got_header = 1; } } }while(!result && !got_header && quicktime_position(file) < file->total_length); //printf("quicktime_read_info 10\n"); /* Construct indexes. */ quicktime_import_avi(file); //printf("quicktime_read_info 20\n"); } /* Quicktime section */ else if(!file->use_avi) { do { result = quicktime_atom_read_header(file, &leaf_atom); if(!result) { if(quicktime_atom_is(&leaf_atom, "mdat")) { quicktime_read_mdat(file, &(file->mdat), &leaf_atom); } else if(quicktime_atom_is(&leaf_atom, "moov")) { /* Set preload and preload the moov atom here */ int64_t start_position = quicktime_position(file); long temp_size = leaf_atom.end - start_position; unsigned char *temp = malloc(temp_size); quicktime_set_preload(file, (temp_size < 0x100000) ? 0x100000 : temp_size); quicktime_read_data(file, temp, temp_size); quicktime_set_position(file, start_position); free(temp); if(quicktime_read_moov(file, &(file->moov), &leaf_atom)) return 1; got_header = 1; } else quicktime_atom_skip(file, &leaf_atom); } }while(!result && quicktime_position(file) < file->total_length); /* go back to the original position */ quicktime_set_position(file, start_position); } /* Initialize track map objects */ if(got_header) { quicktime_init_maps(file); } /* Shut down preload in case of an obsurdly high temp_size */ quicktime_set_preload(file, 0); //printf("quicktime_read_info 100\n"); return !got_header; }
int quicktime_read_info(quicktime_t *file) { int result = 0, found_moov = 0; int i, j, k, m, channel, trak_channel, track; long start_position = quicktime_position(file); quicktime_atom_t leaf_atom; quicktime_trak_t *trak; char avi_test[4]; /* Check for Microsoft AVI */ quicktime_read_char32(file, avi_test); if(quicktime_match_32(avi_test, "RIFF")) { quicktime_read_char32(file, avi_test); quicktime_read_char32(file, avi_test); if(quicktime_match_32(avi_test, "AVI ")) file->use_avi = 1; } quicktime_set_position(file, 0); do { result = quicktime_atom_read_header(file, &leaf_atom); if(!result) { if(quicktime_atom_is(&leaf_atom, "mdat")) { quicktime_read_mdat(file, &(file->mdat), &leaf_atom); } else if(quicktime_atom_is(&leaf_atom, "moov")) { quicktime_read_moov(file, &(file->moov), &leaf_atom); found_moov = 1; } else { quicktime_atom_skip(file, &leaf_atom); } } }while(!result && quicktime_position(file) < file->total_length); /* go back to the original position */ quicktime_set_position(file, start_position); if(found_moov) { /* get tables for all the different tracks */ file->total_atracks = quicktime_audio_tracks(file); file->atracks = (quicktime_audio_map_t*)calloc(1, sizeof(quicktime_audio_map_t) * file->total_atracks); for(i = 0, track = 0; i < file->total_atracks; i++) { while(!file->moov.trak[track]->mdia.minf.is_audio) track++; quicktime_init_audio_map(&(file->atracks[i]), file->moov.trak[track]); } file->total_vtracks = quicktime_video_tracks(file); file->vtracks = (quicktime_video_map_t*)calloc(1, sizeof(quicktime_video_map_t) * file->total_vtracks); for(track = 0, i = 0; i < file->total_vtracks; i++) { while(!file->moov.trak[track]->mdia.minf.is_video) track++; quicktime_init_video_map(&(file->vtracks[i]), file->moov.trak[track]); } /* for all tracks */ for (track = 0; track < file->moov.total_tracks; track++) { /* check if it's a hint track */ if (!file->moov.trak[track]->mdia.minf.is_hint) { continue; } /* it is, so for each reference */ for (j = 0; j < file->moov.trak[track]->tref.hint.numTracks; j++) { /* get the reference track id */ long refTrackId = file->moov.trak[track]->tref.hint.trackIds[j]; /* check each audio track */ for(k = 0; k < file->total_atracks; k++) { if (file->atracks[k].track->tkhd.track_id == refTrackId) { int m = file->atracks[k].totalHintTracks++; file->atracks[k].hintTracks[m] = file->moov.trak[track]; file->atracks[k].hintPositions[m] = 0; file->moov.trak[track]->tref.hint.traks[j] = file->atracks[k].track; file->total_hint_tracks++; break; } } /* check each video track */ for(k = 0; k < file->total_vtracks; k++) { if (file->vtracks[k].track->tkhd.track_id == refTrackId) { int m = file->vtracks[k].totalHintTracks++; file->vtracks[k].hintTracks[m] = file->moov.trak[track]; file->vtracks[k].hintPositions[m] = 0; file->moov.trak[track]->tref.hint.traks[j] = file->vtracks[k].track; file->total_hint_tracks++; break; } } } } } if(found_moov) return 0; else return 1; }