+ FrameRateChange const frc (_parent->active_video_frame_rate(film), film->video_frame_rate());
+ ContentTime const c (_parent->full_length(film), frc);
+
+ p.push_back (
+ UserProperty (UserProperty::LENGTH, _("Full length in video frames at content rate"), c.frames_round(frc.source))
+ );
+
+ if (stream) {
+ p.push_back (
+ UserProperty (
+ UserProperty::LENGTH,
+ _("Full length in audio samples at content rate"),
+ c.frames_round (stream->frame_rate ())
+ )
+ );
+ }
+
+ p.push_back (UserProperty(UserProperty::AUDIO, _("DCP sample rate"), resampled_frame_rate(film), _("Hz")));
+ p.push_back (UserProperty(UserProperty::LENGTH, _("Full length in video frames at DCP rate"), c.frames_round (frc.dcp)));
+
+ if (stream) {
+ p.push_back (
+ UserProperty (
+ UserProperty::LENGTH,
+ _("Full length in audio samples at DCP rate"),
+ c.frames_round(resampled_frame_rate(film))
+ )
+ );
+ }
+}
+
+
+AudioStreamPtr
+AudioContent::stream () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ DCPOMATIC_ASSERT (_streams.size() == 1);
+ return _streams.front ();
+}
+
+
+void
+AudioContent::add_stream (AudioStreamPtr stream)
+{
+ ContentChangeSignaller cc (_parent, AudioContentProperty::STREAMS);
+
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _streams.push_back (stream);
+ }
+}
+
+
+void
+AudioContent::set_stream (AudioStreamPtr stream)
+{
+ ContentChangeSignaller cc (_parent, AudioContentProperty::STREAMS);
+
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _streams.clear ();
+ _streams.push_back (stream);
+ }
+}
+
+
+void
+AudioContent::take_settings_from (shared_ptr<const AudioContent> c)
+{
+ set_gain (c->_gain);
+ set_delay (c->_delay);
+ set_fade_in (c->fade_in());
+ set_fade_out (c->fade_out());
+
+ auto const streams_to_take = std::min(_streams.size(), c->_streams.size());
+
+ for (auto i = 0U; i < streams_to_take; ++i) {
+ auto mapping = _streams[i]->mapping();
+ mapping.take_from(c->_streams[i]->mapping());
+ _streams[i]->set_mapping(mapping);
+ }
+}
+
+
+void
+AudioContent::modify_position (shared_ptr<const Film> film, DCPTime& pos) const
+{
+ pos = pos.round (film->audio_frame_rate());
+}
+
+
+void
+AudioContent::modify_trim_start(shared_ptr<const Film> film, ContentTime& trim) const
+{
+ /* When this trim is used it the audio will have been resampled, and using the
+ * DCP rate here reduces the chance of rounding errors causing audio glitches
+ * due to errors in placement of audio frames (#2373).
+ */
+ trim = trim.round(film ? film->audio_frame_rate() : 48000);
+}
+
+
+ContentTime
+AudioContent::fade_in () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ if (_use_same_fades_as_video && _parent->video) {
+ return dcpomatic::ContentTime::from_frames(_parent->video->fade_in(), _parent->video_frame_rate().get_value_or(24));
+ }
+
+ return _fade_in;