- if (_processor) {
- data = _processor->run (data);
- }
-
- AudioFrame const frame_rate = _audio_content->resampled_audio_frame_rate ();
-
- if (_seek_reference) {
- /* We've had an accurate seek and now we're seeing some data */
- ContentTime const delta = time - _seek_reference.get ();
- AudioFrame const delta_frames = delta.frames (frame_rate);
- if (delta_frames > 0) {
- /* This data comes after the seek time. Pad the data with some silence. */
- shared_ptr<AudioBuffers> padded (new AudioBuffers (data->channels(), data->frames() + delta_frames));
- padded->make_silent ();
- padded->copy_from (data.get(), data->frames(), 0, delta_frames);
- data = padded;
- time -= delta;
- } else if (delta_frames < 0) {
- /* This data comes before the seek time. Throw some data away */
- AudioFrame const to_discard = min (-delta_frames, static_cast<AudioFrame> (data->frames()));
- AudioFrame const to_keep = data->frames() - to_discard;
- if (to_keep == 0) {
- /* We have to throw all this data away, so keep _seek_reference and
- try again next time some data arrives.
- */
- return;
- }
- shared_ptr<AudioBuffers> trimmed (new AudioBuffers (data->channels(), to_keep));
- trimmed->copy_from (data.get(), to_keep, to_discard, 0);
- data = trimmed;
- time += ContentTime::from_frames (to_discard, frame_rate);
- }
- _seek_reference = optional<ContentTime> ();
- }
-
- if (!_audio_position) {
- _audio_position = time.frames (frame_rate);