int
musly_track_analyze_audiofile(
musly_jukebox* jukebox,
const char* audiofile,
int max_seconds,
musly_track* track)
{
if (jukebox && jukebox->decoder) {
// try decoding the given audio file
musly::decoder* d = reinterpret_cast<musly::decoder*>(jukebox->decoder);
// decode a maximum of 60 seconds
std::vector<float> pcm =
d->decodeto_22050hz_mono_float(audiofile, max_seconds);
if (pcm.size() == 0) {
return -1;
}
// select the central max_pcmlength (usually 30s) of the piece
int start = 0;
int sel_central_samples = 30*22050;
int len = pcm.size();
if (len > sel_central_samples) {
start = (len - sel_central_samples) / 2;
len = sel_central_samples;
}
return musly_track_analyze_pcm(jukebox, pcm.data()+start, len, track);
} else {
return -1;
}
return 0;
}
int
musly_track_analyze_audiofile(
musly_jukebox* jukebox,
const char* audiofile,
float excerpt_length,
float excerpt_start,
musly_track* track)
{
if (jukebox && jukebox->decoder) {
// try decoding the given audio file
musly::decoder* d = reinterpret_cast<musly::decoder*>(jukebox->decoder);
// decode the specified excerpt
std::vector<float> pcm =
d->decodeto_22050hz_mono_float(audiofile, excerpt_length, excerpt_start);
if (pcm.size() == 0) {
return -1;
}
// pass it on to build the similarity model
return musly_track_analyze_pcm(jukebox, pcm.data(), pcm.size(), track);
} else {
return -1;
}
return 0;
}
