2 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <libcxml/cxml.h>
21 #include "ffmpeg_content.h"
22 #include "ffmpeg_examiner.h"
23 #include "compose.hpp"
33 using std::stringstream;
37 using boost::shared_ptr;
38 using boost::lexical_cast;
40 int const FFmpegContentProperty::SUBTITLE_STREAMS = 100;
41 int const FFmpegContentProperty::SUBTITLE_STREAM = 101;
42 int const FFmpegContentProperty::AUDIO_STREAMS = 102;
43 int const FFmpegContentProperty::AUDIO_STREAM = 103;
44 int const FFmpegContentProperty::FILTERS = 104;
46 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, boost::filesystem::path p)
50 , SubtitleContent (f, p)
55 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
57 , VideoContent (f, node)
58 , AudioContent (f, node)
59 , SubtitleContent (f, node)
61 list<shared_ptr<cxml::Node> > c = node->node_children ("SubtitleStream");
62 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
63 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i)));
64 if ((*i)->optional_number_child<int> ("Selected")) {
65 _subtitle_stream = _subtitle_streams.back ();
69 c = node->node_children ("AudioStream");
70 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
71 _audio_streams.push_back (shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (*i)));
72 if ((*i)->optional_number_child<int> ("Selected")) {
73 _audio_stream = _audio_streams.back ();
77 c = node->node_children ("Filter");
78 for (list<shared_ptr<cxml::Node> >::iterator i = c.begin(); i != c.end(); ++i) {
79 _filters.push_back (Filter::from_id ((*i)->content ()));
82 _first_video = node->optional_number_child<double> ("FirstVideo");
85 FFmpegContent::FFmpegContent (FFmpegContent const & o)
90 , _subtitle_streams (o._subtitle_streams)
91 , _subtitle_stream (o._subtitle_stream)
92 , _audio_streams (o._audio_streams)
93 , _audio_stream (o._audio_stream)
99 FFmpegContent::as_xml (xmlpp::Node* node) const
101 node->add_child("Type")->add_child_text ("FFmpeg");
102 Content::as_xml (node);
103 VideoContent::as_xml (node);
104 AudioContent::as_xml (node);
105 SubtitleContent::as_xml (node);
107 boost::mutex::scoped_lock lm (_mutex);
109 for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
110 xmlpp::Node* t = node->add_child("SubtitleStream");
111 if (_subtitle_stream && *i == _subtitle_stream) {
112 t->add_child("Selected")->add_child_text("1");
117 for (vector<shared_ptr<FFmpegAudioStream> >::const_iterator i = _audio_streams.begin(); i != _audio_streams.end(); ++i) {
118 xmlpp::Node* t = node->add_child("AudioStream");
119 if (_audio_stream && *i == _audio_stream) {
120 t->add_child("Selected")->add_child_text("1");
125 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
126 node->add_child("Filter")->add_child_text ((*i)->id ());
130 node->add_child("FirstVideo")->add_child_text (lexical_cast<string> (_first_video.get ()));
135 FFmpegContent::examine (shared_ptr<Job> job)
137 job->set_progress_unknown ();
139 Content::examine (job);
141 shared_ptr<const Film> film = _film.lock ();
144 shared_ptr<FFmpegExaminer> examiner (new FFmpegExaminer (shared_from_this ()));
146 VideoContent::Frame video_length = 0;
147 video_length = examiner->video_length ();
148 film->log()->log (String::compose ("Video length obtained from header as %1 frames", video_length));
151 boost::mutex::scoped_lock lm (_mutex);
153 _video_length = video_length;
155 _subtitle_streams = examiner->subtitle_streams ();
156 if (!_subtitle_streams.empty ()) {
157 _subtitle_stream = _subtitle_streams.front ();
160 _audio_streams = examiner->audio_streams ();
161 if (!_audio_streams.empty ()) {
162 _audio_stream = _audio_streams.front ();
165 _first_video = examiner->first_video ();
168 take_from_video_examiner (examiner);
170 signal_changed (ContentProperty::LENGTH);
171 signal_changed (FFmpegContentProperty::SUBTITLE_STREAMS);
172 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
173 signal_changed (FFmpegContentProperty::AUDIO_STREAMS);
174 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
175 signal_changed (AudioContentProperty::AUDIO_CHANNELS);
179 FFmpegContent::summary () const
181 return String::compose (_("Movie: %1"), file().filename().string());
185 FFmpegContent::information () const
187 if (video_length() == 0 || video_frame_rate() == 0) {
193 s << String::compose (_("%1 frames; %2 frames per second"), video_length(), video_frame_rate()) << "\n";
194 s << VideoContent::information ();
200 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
203 boost::mutex::scoped_lock lm (_mutex);
204 _subtitle_stream = s;
207 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
211 FFmpegContent::set_audio_stream (shared_ptr<FFmpegAudioStream> s)
214 boost::mutex::scoped_lock lm (_mutex);
218 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
222 FFmpegContent::audio_length () const
224 int const cafr = content_audio_frame_rate ();
225 int const vfr = video_frame_rate ();
226 VideoContent::Frame const vl = video_length ();
228 boost::mutex::scoped_lock lm (_mutex);
229 if (!_audio_stream) {
233 return video_frames_to_audio_frames (vl, cafr, vfr);
237 FFmpegContent::audio_channels () const
239 boost::mutex::scoped_lock lm (_mutex);
241 if (!_audio_stream) {
245 return _audio_stream->channels;
249 FFmpegContent::content_audio_frame_rate () const
251 boost::mutex::scoped_lock lm (_mutex);
253 if (!_audio_stream) {
257 return _audio_stream->frame_rate;
261 FFmpegContent::output_audio_frame_rate () const
263 shared_ptr<const Film> film = _film.lock ();
266 /* Resample to a DCI-approved sample rate */
267 double t = dcp_audio_frame_rate (content_audio_frame_rate ());
269 FrameRateConversion frc (video_frame_rate(), film->dcp_video_frame_rate());
271 /* Compensate if the DCP is being run at a different frame rate
272 to the source; that is, if the video is run such that it will
273 look different in the DCP compared to the source (slower or faster).
274 skip/repeat doesn't come into effect here.
277 if (frc.change_speed) {
278 t *= video_frame_rate() * frc.factor() / film->dcp_video_frame_rate();
285 operator== (FFmpegSubtitleStream const & a, FFmpegSubtitleStream const & b)
291 operator== (FFmpegAudioStream const & a, FFmpegAudioStream const & b)
296 FFmpegAudioStream::FFmpegAudioStream (shared_ptr<const cxml::Node> node)
298 name = node->string_child ("Name");
299 id = node->number_child<int> ("Id");
300 frame_rate = node->number_child<int> ("FrameRate");
301 channels = node->number_child<int64_t> ("Channels");
302 mapping = AudioMapping (node->node_child ("Mapping"));
303 first_audio = node->optional_number_child<double> ("FirstAudio");
307 FFmpegAudioStream::as_xml (xmlpp::Node* root) const
309 root->add_child("Name")->add_child_text (name);
310 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
311 root->add_child("FrameRate")->add_child_text (lexical_cast<string> (frame_rate));
312 root->add_child("Channels")->add_child_text (lexical_cast<string> (channels));
314 root->add_child("FirstAudio")->add_child_text (lexical_cast<string> (first_audio.get ()));
316 mapping.as_xml (root->add_child("Mapping"));
319 /** Construct a SubtitleStream from a value returned from to_string().
320 * @param t String returned from to_string().
321 * @param v State file version.
323 FFmpegSubtitleStream::FFmpegSubtitleStream (shared_ptr<const cxml::Node> node)
325 name = node->string_child ("Name");
326 id = node->number_child<int> ("Id");
330 FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
332 root->add_child("Name")->add_child_text (name);
333 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
337 FFmpegContent::clone () const
339 return shared_ptr<Content> (new FFmpegContent (*this));
343 FFmpegContent::length () const
345 shared_ptr<const Film> film = _film.lock ();
348 FrameRateConversion frc (video_frame_rate (), film->dcp_video_frame_rate ());
349 return video_length() * frc.factor() * TIME_HZ / film->dcp_video_frame_rate ();
353 FFmpegContent::audio_mapping () const
355 boost::mutex::scoped_lock lm (_mutex);
357 if (!_audio_stream) {
358 return AudioMapping ();
361 return _audio_stream->mapping;
365 FFmpegContent::set_filters (vector<Filter const *> const & filters)
368 boost::mutex::scoped_lock lm (_mutex);
372 signal_changed (FFmpegContentProperty::FILTERS);
376 FFmpegContent::set_audio_mapping (AudioMapping m)
378 audio_stream()->mapping = m;
379 signal_changed (AudioContentProperty::AUDIO_MAPPING);
383 FFmpegContent::identifier () const
387 s << VideoContent::identifier();
389 boost::mutex::scoped_lock lm (_mutex);
391 if (_subtitle_stream) {
392 s << "_" << _subtitle_stream->id;
395 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
396 s << "_" << (*i)->id ();