+ return lrint (t);
+}
+
+string
+AudioContent::processing_description () const
+{
+ if (streams().empty ()) {
+ return "";
+ }
+
+ /* Possible answers are:
+ 1. all audio will be resampled from x to y.
+ 2. all audio will be resampled to y (from a variety of rates)
+ 3. some audio will be resampled to y (from a variety of rates)
+ 4. nothing will be resampled.
+ */
+
+ bool not_resampled = false;
+ bool resampled = false;
+ bool same = true;
+
+ optional<int> common_frame_rate;
+ BOOST_FOREACH (AudioStreamPtr i, streams()) {
+ if (i->frame_rate() != resampled_frame_rate()) {
+ resampled = true;
+ } else {
+ not_resampled = true;
+ }
+
+ if (common_frame_rate && common_frame_rate != i->frame_rate ()) {
+ same = false;
+ }
+ common_frame_rate = i->frame_rate ();
+ }
+
+ if (not_resampled && !resampled) {
+ return _("Audio will not be resampled");
+ }
+
+ if (not_resampled && resampled) {
+ return String::compose (_("Some audio will be resampled to %1kHz"), resampled_frame_rate ());
+ }
+
+ if (!not_resampled && resampled) {
+ if (same) {
+ return String::compose (_("Audio will be resampled from %1kHz to %2kHz"), common_frame_rate.get(), resampled_frame_rate ());
+ } else {
+ return String::compose (_("Audio will be resampled to %1kHz"), resampled_frame_rate ());
+ }
+ }
+
+ return "";
+}
+
+/** @return true if any stream in this content has a sampling rate of more than 48kHz */
+bool
+AudioContent::has_rate_above_48k () const
+{
+ BOOST_FOREACH (AudioStreamPtr i, streams ()) {
+ if (i->frame_rate() > 48000) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/** @return User-visible names of each of our audio channels */
+vector<string>
+AudioContent::channel_names () const
+{
+ vector<string> n;
+
+ int t = 1;
+ BOOST_FOREACH (AudioStreamPtr i, streams ()) {
+ for (int j = 0; j < i->channels(); ++j) {
+ n.push_back (String::compose ("%1:%2", t, j + 1));
+ }
+ ++t;
+ }
+
+ return n;
+}
+
+void
+AudioContent::add_properties (list<UserProperty>& p) const
+{
+ shared_ptr<const AudioStream> stream;
+ if (streams().size() == 1) {
+ stream = streams().front ();
+ }
+
+ if (stream) {
+ p.push_back (UserProperty (UserProperty::AUDIO, _("Channels"), stream->channels ()));
+ p.push_back (UserProperty (UserProperty::AUDIO, _("Content audio sample rate"), stream->frame_rate(), _("Hz")));
+ }
+
+ FrameRateChange const frc (_parent->active_video_frame_rate(), _parent->film()->video_frame_rate());
+ ContentTime const c (_parent->full_length(), 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 (), _("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 ())
+ )
+ );
+ }
+}
+
+void
+AudioContent::set_streams (vector<AudioStreamPtr> streams)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _streams = streams;
+ }
+
+ _parent->signal_changed (AudioContentProperty::STREAMS);
+}
+
+AudioStreamPtr
+AudioContent::stream () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ DCPOMATIC_ASSERT (_streams.size() == 1);
+ return _streams.front ();
+}
+
+void
+AudioContent::add_stream (AudioStreamPtr stream)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _streams.push_back (stream);
+ }
+
+ _parent->signal_changed (AudioContentProperty::STREAMS);
+}
+
+void
+AudioContent::set_stream (AudioStreamPtr stream)
+{
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _streams.clear ();
+ _streams.push_back (stream);
+ }
+
+ _parent->signal_changed (AudioContentProperty::STREAMS);
+}
+
+void
+AudioContent::use_template (shared_ptr<const AudioContent> c)
+{
+ _gain = c->_gain;
+ _delay = c->_delay;
+
+ size_t i = 0;
+ size_t j = 0;
+
+ while (i < _streams.size() && j < c->_streams.size()) {
+ _streams[i]->set_mapping (c->_streams[j]->mapping());
+ ++i;
+ ++j;
+ }