ref: cc4fc2b2ab2a843237afdbef1f53def4506494af
dir: /plugins/xmms/src/mp4_utils.c/
/* * some functions for MP4 files */ #include "mp4ff.h" #include "faad.h" #include <stdio.h> const char *mp4AudioNames[]= { "MPEG-1 Audio Layers 1,2 or 3", "MPEG-2 low biterate (MPEG-1 extension) - MP3", "MPEG-2 AAC Main Profile", "MPEG-2 AAC Low Complexity profile", "MPEG-2 AAC SSR profile", "MPEG-4 audio (MPEG-4 AAC)", 0 }; /* MPEG-4 Audio types from 14496-3 Table 1.5.1 (from mp4.h)*/ const char *mpeg4AudioNames[]= { "!!!!MPEG-4 Audio track Invalid !!!!!!!", "MPEG-4 AAC Main profile", "MPEG-4 AAC Low Complexity profile", "MPEG-4 AAC SSR profile", "MPEG-4 AAC Long Term Prediction profile", "MPEG-4 AAC Scalable", "MPEG-4 CELP", "MPEG-4 HVXC", "MPEG-4 Text To Speech", "MPEG-4 Main Synthetic profile", "MPEG-4 Wavetable Synthesis profile", "MPEG-4 MIDI Profile", "MPEG-4 Algorithmic Synthesis and Audio FX profile" }; /* * find AAC track */ int getAACTrack(mp4ff_t *infile) { int i, rc; int numTracks = mp4ff_total_tracks(infile); printf("total-tracks: %d\n", numTracks); for(i=0; i<numTracks; i++){ unsigned char* buff = 0; int buff_size = 0; mp4AudioSpecificConfig mp4ASC; printf("testing-track: %d\n", i); mp4ff_get_decoder_config(infile, i, &buff, &buff_size); if(buff){ rc = NeAACDecAudioSpecificConfig(buff, buff_size, &mp4ASC); free(buff); if(rc < 0) continue; return(i); } } return(-1); } void getMP4info(char* file) { /* MP4FileHandle mp4file; MP4Duration trackDuration; int numTracks; int i=0; if(!(mp4file = MP4Read(file,0))) return; //MP4Dump(mp4file, 0, 0); numTracks = MP4GetNumberOfTracks(mp4file, NULL, 0); g_print("there are %d track(s)\n", numTracks); for(i=0;i<numTracks;i++){ MP4TrackId trackID = MP4FindTrackId(mp4file, i, NULL, 0); const char *trackType = MP4GetTrackType(mp4file, trackID); printf("Track %d, %s", trackID, trackType); if(!strcmp(trackType, MP4_AUDIO_TRACK_TYPE)){//we found audio track ! int j=0; u_int8_t audiotype = MP4GetTrackAudioType(mp4file, trackID); while(mp4AudioTypes[j]){ // what kind of audio is ? if(mp4AudioTypes[j] == audiotype){ if(mp4AudioTypes[j] == MP4_MPEG4_AUDIO_TYPE){ audiotype = MP4GetTrackAudioMpeg4Type(mp4file, trackID); g_print(" %s", mpeg4AudioNames[audiotype]); } else{ printf(" %s", mp4AudioNames[j]); } g_print(" duration :%d", MP4ConvertFromTrackDuration(mp4file, trackID, MP4GetTrackDuration(mp4file, trackID), MP4_MSECS_TIME_SCALE)); } j++; } } printf("\n"); } MP4Close(mp4file); */ }