+ if (ignore ()) {
+ return;
+ }
+
+ if (_positions[stream] == 0) {
+ /* This is the first data we have received since initialisation or seek. Set
+ the position based on the ContentTime that was given. After this first time
+ we just count samples, as it seems that ContentTimes are unreliable from
+ FFmpegDecoder (not quite continuous; perhaps due to some rounding error).
+ */
+ if (_content->delay() > 0) {
+ /* Insert silence to give the delay */
+ silence (_content->delay ());
+ }
+ time += ContentTime::from_seconds (_content->delay() / 1000.0);
+ _positions[stream] = time.frames_round (_content->resampled_frame_rate ());
+ }
+
+ shared_ptr<Resampler> resampler;
+ ResamplerMap::iterator i = _resamplers.find(stream);
+ if (i != _resamplers.end ()) {
+ resampler = i->second;
+ } else {
+ if (stream->frame_rate() != _content->resampled_frame_rate()) {
+ LOG_GENERAL (
+ "Creating new resampler from %1 to %2 with %3 channels",
+ stream->frame_rate(),
+ _content->resampled_frame_rate(),
+ stream->channels()
+ );
+
+ resampler.reset (new Resampler (stream->frame_rate(), _content->resampled_frame_rate(), stream->channels()));
+ if (_fast) {
+ resampler->set_fast ();
+ }
+ _resamplers[stream] = resampler;
+ }
+ }
+
+ if (resampler) {
+ shared_ptr<const AudioBuffers> ro = resampler->run (data);
+ if (ro->frames() == 0) {
+ return;
+ }
+ data = ro;
+ }
+
+ Data(stream, ContentAudio (data, _positions[stream]));
+ _positions[stream] += data->frames();
+}
+
+/** @return Time just after the last thing that was emitted from a given stream */
+ContentTime
+AudioDecoder::stream_position (AudioStreamPtr stream) const
+{
+ PositionMap::const_iterator i = _positions.find (stream);
+ DCPOMATIC_ASSERT (i != _positions.end ());
+ return ContentTime::from_frames (i->second, _content->resampled_frame_rate());
+}
+
+ContentTime
+AudioDecoder::position () const
+{
+ optional<ContentTime> p;
+ for (PositionMap::const_iterator i = _positions.begin(); i != _positions.end(); ++i) {
+ ContentTime const ct = stream_position (i->first);
+ if (!p || ct < *p) {
+ p = ct;
+ }
+ }
+
+ return p.get_value_or(ContentTime());