diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libfaad/xine_faad_decoder.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/src/libfaad/xine_faad_decoder.c b/src/libfaad/xine_faad_decoder.c index ae71af155..9c657610e 100644 --- a/src/libfaad/xine_faad_decoder.c +++ b/src/libfaad/xine_faad_decoder.c @@ -275,7 +275,32 @@ static void faad_decode_audio ( faad_decoder_t *this, int end_frame ) { lprintf("decoded %d/%d output %ld\n", used, this->size, this->faac_finfo.samples ); - + + /* Performing necessary channel reordering because aac uses a different + * layout than alsa: + * + * aac 5.1 channel layout: c l r ls rs lfe + * alsa 5.1 channel layout: l r ls rs c lfe + * + * Reordering is only necessary for 5.0 and above. Currently only 5.0 + * and 5.1 is being taken care of, the rest will stay in the wrong order + * for now. + * + * WARNING: the following needs a output format of 16 bits per sample. + * TODO: - reorder while copying (in the while() loop) and optimizing + */ + if(this->num_channels == 5 || this->num_channels == 6) + { + int i = 0; + uint16_t* buf = (uint16_t*)(sample_buffer); + + for(; i < this->faac_finfo.samples; i += this->num_channels) { + uint16_t center = buf[i]; + *((uint64_t*)(buf + i)) = *((uint64_t*)(buf + i + 1)); + buf[i + 4] = center; + } + } + while( decoded ) { audio_buffer = this->stream->audio_out->get_buffer (this->stream->audio_out); |