audio_format_mp3.c

mp3_calc_length mp3_close mp3_fill_buffer mp3_fixed_to_short mp3_match mp3_open mp3_read mp3_read_frame mp3_readtags mp3_rewind mp3_seek

size_t mp3_read ( struct audio_file *  fd, int16_t *  buf, size_t  len   ) Read data from the mp3 file and place it in buf. Definition at line 365 of file audio_format_mp3.c. { struct mp3_drv_data *data = fd->drv_data; size_t written = 0; int i; do { /* Get a new frame when we haven't go one */ if (data->cursample == 0) { if (mp3_read_frame(fd) != 0) goto done; if (mad_frame_decode(&data->mframe, &data->mstream) == -1) continue; /* We can now set the sample rate */ fd->srate = data->mframe.header.samplerate; fd->channels = MAD_NCHANNELS(&data->mframe.header); mad_synth_frame(&data->msynth, &data->mframe); } while ((data->cursample < data->msynth.pcm.length) && (written < len)) { /* Write out all channels */ for (i = 0; i < MAD_NCHANNELS(&data->mframe.header); i++) { buf[written++] = mp3_fixed_to_short( data->msynth.pcm.samples[i][data->cursample]); } data->cursample++; } /* Move on to the next frame */ if (data->cursample == data->msynth.pcm.length) data->cursample = 0; } while (written < len); done: return (written); } Here is the call graph for this function: