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;
38 using boost::shared_ptr;
39 using boost::lexical_cast;
41 int const FFmpegContentProperty::SUBTITLE_STREAMS = 100;
42 int const FFmpegContentProperty::SUBTITLE_STREAM = 101;
43 int const FFmpegContentProperty::AUDIO_STREAMS = 102;
44 int const FFmpegContentProperty::AUDIO_STREAM = 103;
45 int const FFmpegContentProperty::FILTERS = 104;
47 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, boost::filesystem::path p)
51 , SubtitleContent (f, p)
56 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
58 , VideoContent (f, node)
59 , AudioContent (f, node)
60 , SubtitleContent (f, node)
62 list<shared_ptr<cxml::Node> > c = node->node_children ("SubtitleStream");
63 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
64 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i)));
65 if ((*i)->optional_number_child<int> ("Selected")) {
66 _subtitle_stream = _subtitle_streams.back ();
70 c = node->node_children ("AudioStream");
71 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
72 _audio_streams.push_back (shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (*i)));
73 if ((*i)->optional_number_child<int> ("Selected")) {
74 _audio_stream = _audio_streams.back ();
78 c = node->node_children ("Filter");
79 for (list<shared_ptr<cxml::Node> >::iterator i = c.begin(); i != c.end(); ++i) {
80 _filters.push_back (Filter::from_id ((*i)->content ()));
83 _first_video = node->optional_number_child<double> ("FirstVideo");
87 FFmpegContent::as_xml (xmlpp::Node* node) const
89 node->add_child("Type")->add_child_text ("FFmpeg");
90 Content::as_xml (node);
91 VideoContent::as_xml (node);
92 AudioContent::as_xml (node);
93 SubtitleContent::as_xml (node);
95 boost::mutex::scoped_lock lm (_mutex);
97 for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
98 xmlpp::Node* t = node->add_child("SubtitleStream");
99 if (_subtitle_stream && *i == _subtitle_stream) {
100 t->add_child("Selected")->add_child_text("1");
105 for (vector<shared_ptr<FFmpegAudioStream> >::const_iterator i = _audio_streams.begin(); i != _audio_streams.end(); ++i) {
106 xmlpp::Node* t = node->add_child("AudioStream");
107 if (_audio_stream && *i == _audio_stream) {
108 t->add_child("Selected")->add_child_text("1");
113 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
114 node->add_child("Filter")->add_child_text ((*i)->id ());
118 node->add_child("FirstVideo")->add_child_text (lexical_cast<string> (_first_video.get ()));
123 FFmpegContent::examine (shared_ptr<Job> job)
125 job->set_progress_unknown ();
127 Content::examine (job);
129 shared_ptr<const Film> film = _film.lock ();
132 shared_ptr<FFmpegExaminer> examiner (new FFmpegExaminer (shared_from_this ()));
134 VideoContent::Frame video_length = 0;
135 video_length = examiner->video_length ();
136 film->log()->log (String::compose ("Video length obtained from header as %1 frames", video_length));
139 boost::mutex::scoped_lock lm (_mutex);
141 _video_length = video_length;
143 _subtitle_streams = examiner->subtitle_streams ();
144 if (!_subtitle_streams.empty ()) {
145 _subtitle_stream = _subtitle_streams.front ();
148 _audio_streams = examiner->audio_streams ();
149 if (!_audio_streams.empty ()) {
150 _audio_stream = _audio_streams.front ();
153 _first_video = examiner->first_video ();
156 take_from_video_examiner (examiner);
158 signal_changed (ContentProperty::LENGTH);
159 signal_changed (FFmpegContentProperty::SUBTITLE_STREAMS);
160 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
161 signal_changed (FFmpegContentProperty::AUDIO_STREAMS);
162 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
163 signal_changed (AudioContentProperty::AUDIO_CHANNELS);
167 FFmpegContent::summary () const
169 /* Get the string() here so that the name does not have quotes around it */
170 return String::compose (_("%1 [movie]"), path().filename().string());
174 FFmpegContent::technical_summary () const
178 as = String::compose ("id %1", _audio_stream->id);
182 if (_subtitle_stream) {
183 ss = String::compose ("id %1", _subtitle_stream->id);
186 pair<string, string> filt = Filter::ffmpeg_strings (_filters);
188 return Content::technical_summary() + " - "
189 + VideoContent::technical_summary() + " - "
191 "ffmpeg: audio %1, subtitle %2, filters %3 %4", as, ss, filt.first, filt.second
196 FFmpegContent::information () const
198 if (video_length() == 0 || video_frame_rate() == 0) {
204 s << String::compose (_("%1 frames; %2 frames per second"), video_length(), video_frame_rate()) << "\n";
205 s << VideoContent::information ();
211 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
214 boost::mutex::scoped_lock lm (_mutex);
215 _subtitle_stream = s;
218 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
222 FFmpegContent::set_audio_stream (shared_ptr<FFmpegAudioStream> s)
225 boost::mutex::scoped_lock lm (_mutex);
229 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
233 FFmpegContent::audio_length () const
235 int const cafr = content_audio_frame_rate ();
236 int const vfr = video_frame_rate ();
237 VideoContent::Frame const vl = video_length ();
239 boost::mutex::scoped_lock lm (_mutex);
240 if (!_audio_stream) {
244 return video_frames_to_audio_frames (vl, cafr, vfr);
248 FFmpegContent::audio_channels () const
250 boost::mutex::scoped_lock lm (_mutex);
252 if (!_audio_stream) {
256 return _audio_stream->channels;
260 FFmpegContent::content_audio_frame_rate () const
262 boost::mutex::scoped_lock lm (_mutex);
264 if (!_audio_stream) {
268 return _audio_stream->frame_rate;
272 FFmpegContent::output_audio_frame_rate () const
274 shared_ptr<const Film> film = _film.lock ();
277 /* Resample to a DCI-approved sample rate */
278 double t = dcp_audio_frame_rate (content_audio_frame_rate ());
280 FrameRateConversion frc (video_frame_rate(), film->video_frame_rate());
282 /* Compensate if the DCP is being run at a different frame rate
283 to the source; that is, if the video is run such that it will
284 look different in the DCP compared to the source (slower or faster).
285 skip/repeat doesn't come into effect here.
288 if (frc.change_speed) {
289 t *= video_frame_rate() * frc.factor() / film->video_frame_rate();
296 operator== (FFmpegSubtitleStream const & a, FFmpegSubtitleStream const & b)
302 operator== (FFmpegAudioStream const & a, FFmpegAudioStream const & b)
307 FFmpegAudioStream::FFmpegAudioStream (shared_ptr<const cxml::Node> node)
308 : mapping (node->node_child ("Mapping"))
310 name = node->string_child ("Name");
311 id = node->number_child<int> ("Id");
312 frame_rate = node->number_child<int> ("FrameRate");
313 channels = node->number_child<int64_t> ("Channels");
314 first_audio = node->optional_number_child<double> ("FirstAudio");
318 FFmpegAudioStream::as_xml (xmlpp::Node* root) const
320 root->add_child("Name")->add_child_text (name);
321 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
322 root->add_child("FrameRate")->add_child_text (lexical_cast<string> (frame_rate));
323 root->add_child("Channels")->add_child_text (lexical_cast<string> (channels));
325 root->add_child("FirstAudio")->add_child_text (lexical_cast<string> (first_audio.get ()));
327 mapping.as_xml (root->add_child("Mapping"));
330 /** Construct a SubtitleStream from a value returned from to_string().
331 * @param t String returned from to_string().
332 * @param v State file version.
334 FFmpegSubtitleStream::FFmpegSubtitleStream (shared_ptr<const cxml::Node> node)
336 name = node->string_child ("Name");
337 id = node->number_child<int> ("Id");
341 FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
343 root->add_child("Name")->add_child_text (name);
344 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
348 FFmpegContent::length () const
350 shared_ptr<const Film> film = _film.lock ();
353 FrameRateConversion frc (video_frame_rate (), film->video_frame_rate ());
354 return video_length() * frc.factor() * TIME_HZ / film->video_frame_rate ();
358 FFmpegContent::audio_mapping () const
360 boost::mutex::scoped_lock lm (_mutex);
362 if (!_audio_stream) {
363 return AudioMapping ();
366 return _audio_stream->mapping;
370 FFmpegContent::set_filters (vector<Filter const *> const & filters)
373 boost::mutex::scoped_lock lm (_mutex);
377 signal_changed (FFmpegContentProperty::FILTERS);
381 FFmpegContent::set_audio_mapping (AudioMapping m)
383 audio_stream()->mapping = m;
384 signal_changed (AudioContentProperty::AUDIO_MAPPING);
388 FFmpegContent::identifier () const
392 s << VideoContent::identifier();
394 boost::mutex::scoped_lock lm (_mutex);
396 if (_subtitle_stream) {
397 s << "_" << _subtitle_stream->id;
400 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
401 s << "_" << (*i)->id ();