#include "i18n.h"
using std::stringstream;
+using std::list;
+using std::pair;
using boost::optional;
using boost::shared_ptr;
AudioDecoder::AudioDecoder (shared_ptr<const Film> f, shared_ptr<const AudioContent> c)
: Decoder (f)
+ , _next_audio (0)
, _audio_content (c)
- , _output_audio_frame_rate (_audio_content->output_audio_frame_rate (f))
{
- if (_audio_content->content_audio_frame_rate() != _output_audio_frame_rate) {
+ if (_audio_content->content_audio_frame_rate() != _audio_content->output_audio_frame_rate()) {
+
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
stringstream s;
- s << String::compose ("Will resample audio from %1 to %2", _audio_content->content_audio_frame_rate(), _output_audio_frame_rate);
- _film->log()->log (s.str ());
+ s << String::compose (
+ "Will resample audio from %1 to %2",
+ _audio_content->content_audio_frame_rate(), _audio_content->output_audio_frame_rate()
+ );
+
+ film->log()->log (s.str ());
/* We will be using planar float data when we call the
resampler. As far as I can see, the audio channel
0,
av_get_default_channel_layout (MAX_AUDIO_CHANNELS),
AV_SAMPLE_FMT_FLTP,
- _output_audio_frame_rate,
+ _audio_content->output_audio_frame_rate(),
av_get_default_channel_layout (MAX_AUDIO_CHANNELS),
AV_SAMPLE_FMT_FLTP,
_audio_content->content_audio_frame_rate(),
{
if (_swr_context) {
- shared_ptr<AudioBuffers> out (new AudioBuffers (_film->audio_mapping().dcp_channels(), 256));
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
+ shared_ptr<AudioBuffers> out (new AudioBuffers (film->audio_mapping().dcp_channels(), 256));
while (1) {
int const frames = swr_convert (_swr_context, (uint8_t **) out->data(), 256, 0, 0);
#endif
void
-AudioDecoder::emit_audio (shared_ptr<const AudioBuffers> data, Time time)
+AudioDecoder::audio (shared_ptr<const AudioBuffers> data, Time time)
{
- /* XXX: map audio to 5.1 */
-
- /* Maybe sample-rate convert */
+ /* Maybe resample */
if (_swr_context) {
/* Compute the resampled frames count and add 32 for luck */
- int const max_resampled_frames = ceil ((int64_t) data->frames() * _output_audio_frame_rate / _audio_content->content_audio_frame_rate()) + 32;
+ int const max_resampled_frames = ceil (
+ (int64_t) data->frames() * _audio_content->output_audio_frame_rate() / _audio_content->content_audio_frame_rate()
+ ) + 32;
- shared_ptr<AudioBuffers> resampled (new AudioBuffers (MAX_AUDIO_CHANNELS, max_resampled_frames));
+ shared_ptr<AudioBuffers> resampled (new AudioBuffers (data->channels(), max_resampled_frames));
/* Resample audio */
int const resampled_frames = swr_convert (
data = resampled;
}
- Audio (data, time);
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
+
+ /* Remap channels */
+ shared_ptr<AudioBuffers> dcp_mapped (new AudioBuffers (film->dcp_audio_channels(), data->frames()));
+ dcp_mapped->make_silent ();
+ list<pair<int, libdcp::Channel> > map = _audio_content->audio_mapping().content_to_dcp ();
+ for (list<pair<int, libdcp::Channel> >::iterator i = map.begin(); i != map.end(); ++i) {
+ dcp_mapped->accumulate_channel (data.get(), i->first, i->second);
+ }
+
+ Audio (dcp_mapped, time);
+ _next_audio = time + film->audio_frames_to_time (data->frames());
}