X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplaylist.cc;h=c54b24c1c947e3bc78c134c74fc36f0e30468ee5;hb=f75cc4ebbffea7a7953af20e8a2ea124767bf949;hp=3f7905fa9c11c251bacdeeefb38f565aab699141;hpb=d62877ae6c4e316e43f4052e4b9ba673610012cf;p=dcpomatic.git

diff --git a/src/lib/playlist.cc b/src/lib/playlist.cc
index 3f7905fa9..c54b24c1c 100644
--- a/src/lib/playlist.cc
+++ b/src/lib/playlist.cc
@@ -17,255 +17,388 @@
 
 */
 
+#include <libcxml/cxml.h>
 #include <boost/shared_ptr.hpp>
+#include <boost/lexical_cast.hpp>
 #include "playlist.h"
 #include "sndfile_content.h"
 #include "sndfile_decoder.h"
-#include "ffmpeg_content.h"
+#include "video_content.h"
 #include "ffmpeg_decoder.h"
-#include "imagemagick_content.h"
-#include "imagemagick_decoder.h"
+#include "ffmpeg_content.h"
+#include "still_image_decoder.h"
+#include "still_image_content.h"
+#include "content_factory.h"
 #include "job.h"
+#include "config.h"
+#include "util.h"
+
+#include "i18n.h"
 
 using std::list;
 using std::cout;
 using std::vector;
 using std::min;
+using std::max;
+using std::string;
+using std::stringstream;
+using std::pair;
+using boost::optional;
 using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
+using boost::lexical_cast;
 
 Playlist::Playlist ()
-	: _video_from (VIDEO_NONE)
-	, _audio_from (AUDIO_NONE)
+	: _sequence_video (true)
+	, _sequencing_video (false)
 {
 
 }
 
-void
-Playlist::setup (ContentList content)
+Playlist::~Playlist ()
 {
-	_video_from = VIDEO_NONE;
-	_audio_from = AUDIO_NONE;
-
-	_ffmpeg.reset ();
-	_imagemagick.clear ();
-	_sndfile.clear ();
+	_content.clear ();
+	reconnect ();
+}
 
-	for (list<boost::signals2::connection>::iterator i = _content_connections.begin(); i != _content_connections.end(); ++i) {
-		i->disconnect ();
+void
+Playlist::content_changed (weak_ptr<Content> content, int property, bool frequent)
+{
+	if (property == ContentProperty::LENGTH) {
+		maybe_sequence_video ();
 	}
 	
-	_content_connections.clear ();
+	ContentChanged (content, property, frequent);
+}
 
-	for (ContentList::const_iterator i = content.begin(); i != content.end(); ++i) {
-		shared_ptr<FFmpegContent> fc = dynamic_pointer_cast<FFmpegContent> (*i);
-		if (fc) {
-			assert (!_ffmpeg);
-			_ffmpeg = fc;
-			_video_from = VIDEO_FFMPEG;
-			if (_audio_from == AUDIO_NONE) {
-				_audio_from = AUDIO_FFMPEG;
-			}
+void
+Playlist::maybe_sequence_video ()
+{
+	if (!_sequence_video || _sequencing_video) {
+		return;
+	}
+	
+	_sequencing_video = true;
+	
+	ContentList cl = _content;
+	Time next = 0;
+	for (ContentList::iterator i = _content.begin(); i != _content.end(); ++i) {
+		if (!dynamic_pointer_cast<VideoContent> (*i)) {
+			continue;
 		}
 		
-		shared_ptr<ImageMagickContent> ic = dynamic_pointer_cast<ImageMagickContent> (*i);
-		if (ic) {
-			_imagemagick.push_back (ic);
-			if (_video_from == VIDEO_NONE) {
-				_video_from = VIDEO_IMAGEMAGICK;
-			}
-		}
+		(*i)->set_position (next);
+		next = (*i)->end() + 1;
+	}
+
+	/* This won't change order, so it does not need a sort */
+	
+	_sequencing_video = false;
+}
 
-		shared_ptr<SndfileContent> sc = dynamic_pointer_cast<SndfileContent> (*i);
-		if (sc) {
-			_sndfile.push_back (sc);
-			_audio_from = AUDIO_SNDFILE;
+string
+Playlist::video_identifier () const
+{
+	string t;
+	
+	for (ContentList::const_iterator i = _content.begin(); i != _content.end(); ++i) {
+		shared_ptr<const VideoContent> vc = dynamic_pointer_cast<const VideoContent> (*i);
+		if (vc) {
+			t += vc->identifier ();
 		}
+	}
+
+	return md5_digest (t.c_str(), t.length());
+}
+
+/** @param node <Playlist> node */
+void
+Playlist::set_from_xml (shared_ptr<const Film> film, shared_ptr<const cxml::Node> node)
+{
+	list<shared_ptr<cxml::Node> > c = node->node_children ("Content");
+	for (list<shared_ptr<cxml::Node> >::iterator i = c.begin(); i != c.end(); ++i) {
+		_content.push_back (content_factory (film, *i));
+	}
+
+	sort (_content.begin(), _content.end(), ContentSorter ());
+
+	reconnect ();
+}
 
-		_content_connections.push_back ((*i)->Changed.connect (bind (&Playlist::content_changed, this, _1, _2)));
+/** @param node <Playlist> node */
+void
+Playlist::as_xml (xmlpp::Node* node)
+{
+	for (ContentList::iterator i = _content.begin(); i != _content.end(); ++i) {
+		(*i)->as_xml (node->add_child ("Content"));
 	}
+}
 
+void
+Playlist::add (shared_ptr<Content> c)
+{
+	_content.push_back (c);
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	reconnect ();
 	Changed ();
 }
 
-ContentAudioFrame
-Playlist::audio_length () const
+void
+Playlist::remove (shared_ptr<Content> c)
 {
-	switch (_audio_from) {
-	case AUDIO_NONE:
-		return 0;
-	case AUDIO_FFMPEG:
-		return _ffmpeg->audio_length ();
-	case AUDIO_SNDFILE:
-	{
-		ContentAudioFrame l = 0;
-		for (list<shared_ptr<const SndfileContent> >::const_iterator i = _sndfile.begin(); i != _sndfile.end(); ++i) {
-			l += (*i)->audio_length ();
-		}
-		return l;
+	ContentList::iterator i = _content.begin ();
+	while (i != _content.end() && *i != c) {
+		++i;
 	}
+	
+	if (i != _content.end ()) {
+		_content.erase (i);
+		Changed ();
 	}
 
-	return 0;
+	/* This won't change order, so it does not need a sort */
 }
 
-int
-Playlist::audio_channels () const
+void
+Playlist::remove (ContentList c)
 {
-	switch (_audio_from) {
-	case AUDIO_NONE:
-		return 0;
-	case AUDIO_FFMPEG:
-		return _ffmpeg->audio_channels ();
-	case AUDIO_SNDFILE:
-	{
-		int c = 0;
-		for (list<shared_ptr<const SndfileContent> >::const_iterator i = _sndfile.begin(); i != _sndfile.end(); ++i) {
-			c += (*i)->audio_channels ();
+	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
+		ContentList::iterator j = _content.begin ();
+		while (j != _content.end() && *j != *i) {
+			++j;
+		}
+	
+		if (j != _content.end ()) {
+			_content.erase (j);
 		}
-		return c;
 	}
+
+	/* This won't change order, so it does not need a sort */
+	
+	Changed ();
+}
+
+bool
+Playlist::has_subtitles () const
+{
+	for (ContentList::const_iterator i = _content.begin(); i != _content.end(); ++i) {
+		shared_ptr<const FFmpegContent> fc = dynamic_pointer_cast<FFmpegContent> (*i);
+		if (fc && !fc->subtitle_streams().empty()) {
+			return true;
+		}
 	}
 
-	return 0;
+	return false;
 }
 
+class FrameRateCandidate
+{
+public:
+	FrameRateCandidate (float source_, int dcp_)
+		: source (source_)
+		, dcp (dcp_)
+	{}
+
+	float source;
+	int dcp;
+};
+
 int
-Playlist::audio_frame_rate () const
+Playlist::best_dcp_frame_rate () const
 {
-	switch (_audio_from) {
-	case AUDIO_NONE:
-		return 0;
-	case AUDIO_FFMPEG:
-		return _ffmpeg->audio_frame_rate ();
-	case AUDIO_SNDFILE:
-		return _sndfile.front()->audio_frame_rate ();
+	list<int> const allowed_dcp_frame_rates = Config::instance()->allowed_dcp_frame_rates ();
+
+	/* Work out what rates we could manage, including those achieved by using skip / repeat. */
+	list<FrameRateCandidate> candidates;
+
+	/* Start with the ones without skip / repeat so they will get matched in preference to skipped/repeated ones */
+	for (list<int>::const_iterator i = allowed_dcp_frame_rates.begin(); i != allowed_dcp_frame_rates.end(); ++i) {
+		candidates.push_back (FrameRateCandidate (*i, *i));
 	}
 
-	return 0;
+	/* Then the skip/repeat ones */
+	for (list<int>::const_iterator i = allowed_dcp_frame_rates.begin(); i != allowed_dcp_frame_rates.end(); ++i) {
+		candidates.push_back (FrameRateCandidate (float (*i) / 2, *i));
+		candidates.push_back (FrameRateCandidate (float (*i) * 2, *i));
+	}
+
+	/* Pick the best one */
+	float error = std::numeric_limits<float>::max ();
+	optional<FrameRateCandidate> best;
+	list<FrameRateCandidate>::iterator i = candidates.begin();
+	while (i != candidates.end()) {
+
+		float this_error = 0;
+		for (ContentList::const_iterator j = _content.begin(); j != _content.end(); ++j) {
+			shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*j);
+			if (!vc) {
+				continue;
+			}
+
+			/* Use the largest difference between DCP and source as the "error" */
+			this_error = max (this_error, float (fabs (i->source - vc->video_frame_rate ())));
+		}
+
+		if (this_error < error) {
+			error = this_error;
+			best = *i;
+		}
+
+		++i;
+	}
+
+	if (!best) {
+		return 24;
+	}
+	
+	return best->dcp;
 }
 
-int64_t
-Playlist::audio_channel_layout () const
+Time
+Playlist::length () const
 {
-	switch (_audio_from) {
-	case AUDIO_NONE:
-		return 0;
-	case AUDIO_FFMPEG:
-		return _ffmpeg->audio_channel_layout ();
-	case AUDIO_SNDFILE:
-		/* XXX */
-		return 0;
+	Time len = 0;
+	for (ContentList::const_iterator i = _content.begin(); i != _content.end(); ++i) {
+		len = max (len, (*i)->end() + 1);
 	}
 
-	return 0;
+	return len;
 }
 
-float
-Playlist::video_frame_rate () const
+void
+Playlist::reconnect ()
 {
-	switch (_video_from) {
-	case VIDEO_NONE:
-		return 0;
-	case VIDEO_FFMPEG:
-		return _ffmpeg->video_frame_rate ();
-	case VIDEO_IMAGEMAGICK:
-		return 24;
+	for (list<boost::signals2::connection>::iterator i = _content_connections.begin(); i != _content_connections.end(); ++i) {
+		i->disconnect ();
 	}
 
-	return 0;
+	_content_connections.clear ();
+		
+	for (ContentList::iterator i = _content.begin(); i != _content.end(); ++i) {
+		_content_connections.push_back ((*i)->Changed.connect (bind (&Playlist::content_changed, this, _1, _2, _3)));
+	}
 }
 
-libdcp::Size
-Playlist::video_size () const
+Time
+Playlist::video_end () const
 {
-	switch (_video_from) {
-	case VIDEO_NONE:
-		return libdcp::Size ();
-	case VIDEO_FFMPEG:
-		return _ffmpeg->video_size ();
-	case VIDEO_IMAGEMAGICK:
-		/* XXX */
-		return _imagemagick.front()->video_size ();
+	Time end = 0;
+	for (ContentList::const_iterator i = _content.begin(); i != _content.end(); ++i) {
+		if (dynamic_pointer_cast<const VideoContent> (*i)) {
+			end = max (end, (*i)->end ());
+		}
 	}
 
-	return libdcp::Size ();
+	return end;
 }
 
-ContentVideoFrame
-Playlist::video_length () const
+void
+Playlist::set_sequence_video (bool s)
 {
-	switch (_video_from) {
-	case VIDEO_NONE:
-		return 0;
-	case VIDEO_FFMPEG:
-		return _ffmpeg->video_length ();
-	case VIDEO_IMAGEMAGICK:
-	{
-		ContentVideoFrame l = 0;
-		for (list<shared_ptr<const ImageMagickContent> >::const_iterator i = _imagemagick.begin(); i != _imagemagick.end(); ++i) {
-			l += (*i)->video_length ();
-		}
-		return l;
+	_sequence_video = s;
+}
+
+bool
+ContentSorter::operator() (shared_ptr<Content> a, shared_ptr<Content> b)
+{
+	return a->position() < b->position();
+}
+
+/** @return content in an undefined order */
+ContentList
+Playlist::content () const
+{
+	return _content;
+}
+
+void
+Playlist::repeat (ContentList c, int n)
+{
+	pair<Time, Time> range (TIME_MAX, 0);
+	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
+		range.first = min (range.first, (*i)->position ());
+		range.second = max (range.second, (*i)->position ());
+		range.first = min (range.first, (*i)->end ());
+		range.second = max (range.second, (*i)->end ());
 	}
+
+	Time pos = range.second;
+	for (int i = 0; i < n; ++i) {
+		for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
+			shared_ptr<Content> copy = (*i)->clone ();
+			copy->set_position (pos + copy->position() - range.first);
+			_content.push_back (copy);
+		}
+		pos += range.second - range.first;
 	}
 
-	return 0;
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	
+	reconnect ();
+	Changed ();
 }
 
-bool
-Playlist::has_audio () const
+void
+Playlist::move_earlier (shared_ptr<Content> c)
 {
-	return _audio_from != AUDIO_NONE;
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	
+	ContentList::iterator previous = _content.end ();
+	ContentList::iterator i = _content.begin();
+	while (i != _content.end() && *i != c) {
+		previous = i;
+		++i;
+	}
+
+	assert (i != _content.end ());
+	if (previous == _content.end ()) {
+		return;
+	}
+	
+	Time const p = (*previous)->position ();
+	(*previous)->set_position (p + c->length_after_trim ());
+	c->set_position (p);
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	
+	Changed ();
 }
 
 void
-Playlist::content_changed (weak_ptr<Content> c, int p)
+Playlist::move_later (shared_ptr<Content> c)
 {
-	ContentChanged (c, p);
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	
+	ContentList::iterator i = _content.begin();
+	while (i != _content.end() && *i != c) {
+		++i;
+	}
+
+	assert (i != _content.end ());
+
+	ContentList::iterator next = i;
+	++next;
+
+	if (next == _content.end ()) {
+		return;
+	}
+
+	Time const p = (*next)->position ();
+	(*next)->set_position (c->position ());
+	c->set_position (p + c->length_after_trim ());
+	sort (_content.begin(), _content.end(), ContentSorter ());
+	
+	Changed ();
 }
 
-AudioMapping
-Playlist::default_audio_mapping () const
+bool
+Playlist::content_paths_valid () const
 {
-	AudioMapping m;
-
-	switch (_audio_from) {
-	case AUDIO_NONE:
-		break;
-	case AUDIO_FFMPEG:
-		if (_ffmpeg->audio_channels() == 1) {
-			/* Map mono sources to centre */
-			m.add (AudioMapping::Channel (_ffmpeg, 0), libdcp::CENTRE);
-		} else {
-			int const N = min (_ffmpeg->audio_channels (), MAX_AUDIO_CHANNELS);
-			/* Otherwise just start with a 1:1 mapping */
-			for (int i = 0; i < N; ++i) {
-				m.add (AudioMapping::Channel (_ffmpeg, i), (libdcp::Channel) i);
-			}
+	for (ContentList::const_iterator i = _content.begin(); i != _content.end(); ++i) {
+		if (!(*i)->path_valid ()) {
+			return false;
 		}
-		break;
-
-	case AUDIO_SNDFILE:
-	{
-		int n = 0;
-		for (list<shared_ptr<const SndfileContent> >::const_iterator i = _sndfile.begin(); i != _sndfile.end(); ++i) {
-			cout << "sndfile " << (*i)->audio_channels() << "\n";
-			for (int j = 0; j < (*i)->audio_channels(); ++j) {
-				m.add (AudioMapping::Channel (*i, j), (libdcp::Channel) n);
-				++n;
-				if (n >= MAX_AUDIO_CHANNELS) {
-					break;
-				}
-			}
-			if (n >= MAX_AUDIO_CHANNELS) {
-				break;
-			}
-		}
-		break;
-	}
 	}
 
-	return m;
+	return true;
 }