ReadStatus MP4Reader::parse() {
mp4AudioSpecificConfig cfg;
FXuchar* buffer;
FXuint size;
FXint ntracks;
FXASSERT(handle==NULL);
FXASSERT(packet);
handle = mp4ff_open_read(&callback);
if (handle==NULL)
goto error;
ntracks = mp4ff_total_tracks(handle);
if (ntracks<=0)
goto error;
for (FXint i=0;i<ntracks;i++) {
if ((mp4ff_get_decoder_config(handle,i,&buffer,&size)==0) && buffer && size) {
if (NeAACDecAudioSpecificConfig(buffer,size,&cfg)==0) {
af.set(AP_FORMAT_S16,mp4ff_get_sample_rate(handle,i),mp4ff_get_channel_count(handle,i));
af.debug();
if (size>packet->space()) {
GM_DEBUG_PRINT("MP4 config buffer is too big for decoder packet");
free(buffer);
goto error;
}
track=i;
frame=0;
nframes=mp4ff_num_samples(handle,i);
stream_length=mp4ff_get_track_duration(handle,i);
packet->append(buffer,size);
packet->flags|=AAC_FLAG_CONFIG|AAC_FLAG_FRAME;
engine->decoder->post(new ConfigureEvent(af,Codec::AAC));
send_meta();
engine->decoder->post(packet);
packet=NULL;
flags|=FLAG_PARSED;
free(buffer);
return ReadOk;
}
free(buffer);
}
}
error:
packet->unref();
return ReadError;
}
static int
xmms_mp4_get_track (xmms_xform_t *xform, mp4ff_t *infile)
{
glong chans, rate;
int i;
int numTracks = mp4ff_total_tracks (infile);
/* find first suitable audio track */
for (i = 0; i < numTracks; i++) {
gint object_type = mp4ff_get_audio_type (infile, i);
/* these identifiers are mostly from VLC code */
switch (object_type) {
case 0x40: /* MPEG-4 audio */
case 0x66: /* MPEG-2 AAC */
case 0x67: /* MPEG-2 AAC LC */
case 0x68: /* MPEG-2 AAC SSR */
xmms_xform_outdata_type_add (xform,
XMMS_STREAM_TYPE_MIMETYPE,
"audio/aac",
XMMS_STREAM_TYPE_END);
return i;
case 0x69: /* MPEG-2 audio */
case 0x6B: /* MPEG-1 audio */
continue;
case 0xff: /* ALAC */
chans = mp4ff_get_channel_count (infile, i);
rate = mp4ff_get_sample_rate (infile, i);
if (chans <= 0 || rate <= 0) {
XMMS_DBG ("Bad ALAC audio track %d", i);
continue;
}
xmms_xform_outdata_type_add (xform,
XMMS_STREAM_TYPE_MIMETYPE,
"audio/x-ffmpeg-alac",
XMMS_STREAM_TYPE_FMT_SAMPLERATE,
(int)rate,
XMMS_STREAM_TYPE_FMT_CHANNELS,
(int)chans,
XMMS_STREAM_TYPE_END);
return i;
default:
continue;
}
}
/* can't decode this */
return -1;
}
/*
* Input : Filename
* Output : 1 if succesful -1 if not
*/
int mp4_openFile(char * name) {
if((sndFile = fopen(name, "rb"))) {
mp4cb.user_data = sndFile;
if((infile = mp4ff_open_read(&mp4cb))) {
if ((track = findAudioTrack(infile)) >= 0) {
/* Decoder failed to initialize */
if((decoder = AACInitDecoder())) {
/* Decoder should be updated to decode raw blocks in the mp4 */
inf.sampRateCore = mp4ff_get_sample_rate(infile, track);
inf.nChans = mp4ff_get_channel_count(infile,track);
/* AACSetRawBlockParams will fail if not set */
inf.profile = AAC_PROFILE_LC;
samples = mp4ff_num_samples(infile, track);
if(!AACSetRawBlockParams(decoder, 0, &inf))
return 0;
}
}
}
}
return -1; /* sndFile == NULL */
}
// returns -1 for error, 0 for mp4, 1 for aac
int
aac_probe (DB_FILE *fp, const char *fname, MP4FILE_CB *cb, float *duration, int *samplerate, int *channels, int *totalsamples, int *mp4track, MP4FILE *pmp4) {
// try mp4
if (mp4track) {
*mp4track = -1;
}
if (*pmp4) {
*pmp4 = NULL;
}
*duration = -1;
#ifdef USE_MP4FF
mp4ff_t *mp4 = mp4ff_open_read (cb);
#else
MP4FileHandle mp4 = MP4ReadProvider (fname, 0, cb);
#endif
if (!mp4) {
trace ("not an mp4 file\n");
return -1;
}
if (pmp4) {
*pmp4 = mp4;
}
#ifdef USE_MP4FF
int ntracks = mp4ff_total_tracks (mp4);
if (ntracks > 0) {
trace ("m4a container detected, ntracks=%d\n", ntracks);
int i = -1;
trace ("looking for mp4 data...\n");
int sr = -1;
for (i = 0; i < ntracks; i++) {
unsigned char* buff = 0;
unsigned int buff_size = 0;
mp4AudioSpecificConfig mp4ASC;
mp4ff_get_decoder_config(mp4, i, &buff, &buff_size);
if(buff){
int rc = AudioSpecificConfig(buff, buff_size, &mp4ASC);
sr = mp4ASC.samplingFrequency;
free(buff);
if(rc < 0)
continue;
break;
}
}
if (i != ntracks)
{
trace ("mp4 track: %d\n", i);
if (sr != -1) {
*samplerate = sr;
}
else {
*samplerate = mp4ff_get_sample_rate (mp4, i);
}
*channels = mp4ff_get_channel_count (mp4, i);
int samples = mp4ff_num_samples(mp4, i) * 1024;
samples = (int64_t)samples * (*samplerate) / mp4ff_time_scale (mp4, i);
trace ("mp4 nsamples=%d, samplerate=%d, timescale=%d, duration=%lld\n", samples, *samplerate, mp4ff_time_scale(mp4, i), mp4ff_get_track_duration(mp4, i));
*duration = (float)samples / (*samplerate);
if (totalsamples) {
*totalsamples = samples;
}
if (mp4track) {
*mp4track = i;
}
if (!*pmp4) {
mp4ff_close (mp4);
}
return 0;
}
}
#else
MP4FileHandle mp4File = mp4;
MP4TrackId trackId = MP4FindTrackId(mp4File, 0, "audio", 0);
trace ("trackid: %d\n", trackId);
uint32_t timeScale = MP4GetTrackTimeScale(mp4File, trackId);
MP4Duration trackDuration = MP4GetTrackDuration(mp4File, trackId);
MP4SampleId numSamples = MP4GetTrackNumberOfSamples(mp4File, trackId);
u_int8_t* pConfig;
uint32_t configSize = 0;
bool res = MP4GetTrackESConfiguration(mp4File, trackId, &pConfig, &configSize);
if (res && pConfig) {
mp4AudioSpecificConfig mp4ASC;
int rc = AudioSpecificConfig(pConfig, configSize, &mp4ASC);
free (pConfig);
if (rc >= 0) {
*samplerate = mp4ASC.samplingFrequency;
*channels = MP4GetTrackAudioChannels (mp4File, trackId);
// int64_t duration = MP4ConvertFromTrackDuration (mp4File, trackId, trackDuration, timeScale);
int samples = MP4GetTrackNumberOfSamples (mp4File, trackId) * 1024 * (*channels);
trace ("mp4 nsamples=%d, timescale=%d, samplerate=%d\n", samples, timeScale, *samplerate);
*duration = (float)samples / (*samplerate);
if (totalsamples) {
*totalsamples = samples;
}
if (mp4track) {
*mp4track = trackId;
}
if (!*pmp4) {
MP4Close (mp4);
}
return 0;
}
}
#endif
if (*pmp4) {
*pmp4 = NULL;
}
if (mp4) {
#if USE_MP4FF
mp4ff_close (mp4);
#else
MP4Close (mp4);
#endif
mp4 = NULL;
}
trace ("mp4 track not found, looking for aac stream...\n");
// not an mp4, try raw aac
#if USE_MP4FF
deadbeef->rewind (fp);
#endif
if (parse_aac_stream (fp, samplerate, channels, duration, totalsamples) == -1) {
trace ("aac stream not found\n");
return -1;
}
trace ("found aac stream\n");
return 1;
}
