+
+bool
+DCPContent::can_reference (shared_ptr<const Film> film, function<bool (shared_ptr<const Content>)> part, string overlapping, string& why_not) const
+{
+ /* We must be using the same standard as the film */
+ if (_standard) {
+ if (_standard.get() == dcp::Standard::INTEROP && !film->interop()) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it is Interop and the film is set to SMPTE.");
+ return false;
+ } else if (_standard.get() == dcp::Standard::SMPTE && film->interop()) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it is SMPTE and the film is set to Interop.");
+ return false;
+ }
+ }
+
+ /* And the same frame rate */
+ if (!video_frame_rate() || (lrint(video_frame_rate().get()) != film->video_frame_rate())) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it has a different frame rate to the film.");
+ return false;
+ }
+
+ auto const fr = film->reels ();
+
+ list<DCPTimePeriod> reel_list;
+ try {
+ reel_list = reels (film);
+ } catch (dcp::ReadError &) {
+ /* We couldn't read the DCP; it's probably missing */
+ return false;
+ } catch (dcp::KDMDecryptionError &) {
+ /* We have an incorrect KDM */
+ return false;
+ }
+
+ /* fr must contain reels(). It can also contain other reels, but it must at
+ least contain reels().
+ */
+ for (auto i: reel_list) {
+ if (find (fr.begin(), fr.end(), i) == fr.end ()) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("its reel lengths differ from those in the film; set the reel mode to 'split by video content'.");
+ return false;
+ }
+ }
+
+ auto a = overlaps (film, film->content(), part, position(), end(film));
+ if (a.size() != 1 || a.front().get() != this) {
+ why_not = overlapping;
+ return false;
+ }
+
+ return true;
+}
+
+
+bool
+DCPContent::can_reference_video (shared_ptr<const Film> film, string& why_not) const
+{
+ if (!video) {
+ why_not = _("There is no video in this DCP");
+ return false;
+ }
+
+ if (film->resolution() != resolution()) {
+ if (resolution() == Resolution::FOUR_K) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it is 4K and the film is 2K.");
+ } else {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it is 2K and the film is 4K.");
+ }
+ return false;
+ } else if (film->frame_size() != video->size()) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("its video frame size differs from the film's.");
+ return false;
+ }
+
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ return can_reference(
+ film,
+ [](shared_ptr<const Content> c) {
+ return static_cast<bool>(c->video) && c->video->use();
+ },
+ _("it overlaps other video content; remove the other content."),
+ why_not
+ );
+}
+
+
+bool
+DCPContent::can_reference_audio (shared_ptr<const Film> film, string& why_not) const
+{
+ shared_ptr<DCPDecoder> decoder;
+ try {
+ decoder = make_shared<DCPDecoder>(film, shared_from_this(), false, film->tolerant(), shared_ptr<DCPDecoder>());
+ } catch (dcp::ReadError &) {
+ /* We couldn't read the DCP, so it's probably missing */
+ return false;
+ } catch (DCPError &) {
+ /* We couldn't read the DCP, so it's probably missing */
+ return false;
+ } catch (dcp::KDMDecryptionError &) {
+ /* We have an incorrect KDM */
+ return false;
+ }
+
+ if (audio && audio->stream()) {
+ auto const channels = audio->stream()->channels();
+ if (channels != film->audio_channels()) {
+ why_not = String::compose(_("it has a different number of audio channels than the project; set the project to have %1 channels."), channels);
+ return false;
+ }
+ }
+
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ return can_reference(
+ film, [](shared_ptr<const Content> c) {
+ return c->has_mapped_audio();
+ },
+ _("it overlaps other audio content; remove the other content."),
+ why_not
+ );
+}
+
+
+bool
+DCPContent::can_reference_text (shared_ptr<const Film> film, TextType type, string& why_not) const
+{
+ shared_ptr<DCPDecoder> decoder;
+ try {
+ decoder = make_shared<DCPDecoder>(film, shared_from_this(), false, film->tolerant(), shared_ptr<DCPDecoder>());
+ } catch (dcp::ReadError &) {
+ /* We couldn't read the DCP, so it's probably missing */
+ return false;
+ } catch (DCPError &) {
+ /* We couldn't read the DCP, so it's probably missing */
+ return false;
+ } catch (dcp::KDMDecryptionError &) {
+ /* We have an incorrect KDM */
+ return false;
+ }
+
+ for (auto i: decoder->reels()) {
+ if (type == TextType::OPEN_SUBTITLE) {
+ if (i->main_subtitle() && i->main_subtitle()->entry_point().get_value_or(0) != 0) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("one of its subtitle reels has a non-zero entry point so it must be re-written.");
+ return false;
+ }
+ }
+ if (type == TextType::CLOSED_CAPTION) {
+ for (auto j: i->closed_captions()) {
+ if (j->entry_point().get_value_or(0) != 0) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("one of its closed caption has a non-zero entry point so it must be re-written.");
+ return false;
+ }
+ }
+ }
+ }
+
+ if (trim_start() != dcpomatic::ContentTime()) {
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ why_not = _("it has a start trim so its subtitles or closed captions must be re-written.");
+ return false;
+ }
+
+ /// TRANSLATORS: this string will follow "Cannot reference this DCP: "
+ return can_reference(
+ film,
+ [type](shared_ptr<const Content> c) {
+ return std::find_if(c->text.begin(), c->text.end(), [type](shared_ptr<const TextContent> t) { return t->type() == type; }) != c->text.end();
+ },
+ _("they overlap other text content; remove the other content."),
+ why_not
+ );
+}
+
+void
+DCPContent::take_settings_from (shared_ptr<const Content> c)
+{
+ auto dc = dynamic_pointer_cast<const DCPContent>(c);
+ if (!dc) {
+ return;
+ }
+
+ if (this == dc.get()) {
+ return;
+ }
+
+ boost::mutex::scoped_lock lm(_mutex);
+ boost::mutex::scoped_lock lm2(dc->_mutex);
+
+ _reference_video = dc->_reference_video;
+ _reference_audio = dc->_reference_audio;
+ _reference_text = dc->_reference_text;
+}
+
+void
+DCPContent::set_cpl (string id)
+{
+ ContentChangeSignaller cc (this, DCPContentProperty::CPL);
+
+ {
+ boost::mutex::scoped_lock lm (_mutex);
+ _cpl = id;
+ }
+}
+
+bool
+DCPContent::kdm_timing_window_valid () const
+{
+ if (!_kdm) {
+ return true;
+ }
+
+ dcp::LocalTime now;
+ return _kdm->not_valid_before() < now && now < _kdm->not_valid_after();
+}
+
+
+Resolution
+DCPContent::resolution () const
+{
+ if (video->size() && (video->size()->width > 2048 || video->size()->height > 1080)) {
+ return Resolution::FOUR_K;
+ }
+
+ return Resolution::TWO_K;
+}
+
+
+void
+DCPContent::check_font_ids()
+{
+ if (text.empty()) {
+ return;
+ }
+
+ DCPExaminer examiner(shared_from_this(), true);
+ examiner.add_fonts(text.front());
+}
+
+
+int
+DCPContent::active_audio_channels() const
+{
+ return _active_audio_channels.get_value_or(
+ (audio && audio->stream()) ? audio->stream()->channels() : 0
+ );
+}
+