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)
54 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
56 , VideoContent (f, node)
57 , AudioContent (f, node)
59 list<shared_ptr<cxml::Node> > c = node->node_children ("SubtitleStream");
60 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
61 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i)));
62 if ((*i)->optional_number_child<int> ("Selected")) {
63 _subtitle_stream = _subtitle_streams.back ();
67 c = node->node_children ("AudioStream");
68 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
69 _audio_streams.push_back (shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (*i)));
70 if ((*i)->optional_number_child<int> ("Selected")) {
71 _audio_stream = _audio_streams.back ();
75 c = node->node_children ("Filter");
76 for (list<shared_ptr<cxml::Node> >::iterator i = c.begin(); i != c.end(); ++i) {
77 _filters.push_back (Filter::from_id ((*i)->content ()));
81 FFmpegContent::FFmpegContent (FFmpegContent const & o)
85 , _subtitle_streams (o._subtitle_streams)
86 , _subtitle_stream (o._subtitle_stream)
87 , _audio_streams (o._audio_streams)
88 , _audio_stream (o._audio_stream)
94 FFmpegContent::as_xml (xmlpp::Node* node) const
96 node->add_child("Type")->add_child_text ("FFmpeg");
97 Content::as_xml (node);
98 VideoContent::as_xml (node);
99 AudioContent::as_xml (node);
101 boost::mutex::scoped_lock lm (_mutex);
103 for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
104 xmlpp::Node* t = node->add_child("SubtitleStream");
105 if (_subtitle_stream && *i == _subtitle_stream) {
106 t->add_child("Selected")->add_child_text("1");
111 for (vector<shared_ptr<FFmpegAudioStream> >::const_iterator i = _audio_streams.begin(); i != _audio_streams.end(); ++i) {
112 xmlpp::Node* t = node->add_child("AudioStream");
113 if (_audio_stream && *i == _audio_stream) {
114 t->add_child("Selected")->add_child_text("1");
119 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
120 node->add_child("Filter")->add_child_text ((*i)->id ());
125 FFmpegContent::examine (shared_ptr<Job> job)
127 job->set_progress_unknown ();
129 Content::examine (job);
131 shared_ptr<const Film> film = _film.lock ();
134 shared_ptr<FFmpegExaminer> examiner (new FFmpegExaminer (shared_from_this ()));
136 ContentVideoFrame video_length = 0;
137 video_length = examiner->video_length ();
138 film->log()->log (String::compose ("Video length obtained from header as %1 frames", examiner->video_length ()));
141 boost::mutex::scoped_lock lm (_mutex);
143 _video_length = video_length;
145 _subtitle_streams = examiner->subtitle_streams ();
146 if (!_subtitle_streams.empty ()) {
147 _subtitle_stream = _subtitle_streams.front ();
150 _audio_streams = examiner->audio_streams ();
151 if (!_audio_streams.empty ()) {
152 _audio_stream = _audio_streams.front ();
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 return String::compose (_("Movie: %1"), file().filename().string());
173 FFmpegContent::information () const
175 if (video_length() == 0 || video_frame_rate() == 0) {
181 s << String::compose (_("%1 frames; %2 frames per second"), video_length(), video_frame_rate()) << "\n";
182 s << VideoContent::information ();
188 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
191 boost::mutex::scoped_lock lm (_mutex);
192 _subtitle_stream = s;
195 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
199 FFmpegContent::set_audio_stream (shared_ptr<FFmpegAudioStream> s)
202 boost::mutex::scoped_lock lm (_mutex);
206 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
210 FFmpegContent::audio_length () const
212 int const cafr = content_audio_frame_rate ();
213 int const vfr = video_frame_rate ();
214 ContentVideoFrame const vl = video_length ();
216 boost::mutex::scoped_lock lm (_mutex);
217 if (!_audio_stream) {
221 return video_frames_to_audio_frames (vl, cafr, vfr);
225 FFmpegContent::audio_channels () const
227 boost::mutex::scoped_lock lm (_mutex);
229 if (!_audio_stream) {
233 return _audio_stream->channels;
237 FFmpegContent::content_audio_frame_rate () const
239 boost::mutex::scoped_lock lm (_mutex);
241 if (!_audio_stream) {
245 return _audio_stream->frame_rate;
249 FFmpegContent::output_audio_frame_rate () const
251 shared_ptr<const Film> film = _film.lock ();
254 /* Resample to a DCI-approved sample rate */
255 double t = dcp_audio_frame_rate (content_audio_frame_rate ());
257 FrameRateConversion frc (video_frame_rate(), film->dcp_video_frame_rate());
259 /* Compensate if the DCP is being run at a different frame rate
260 to the source; that is, if the video is run such that it will
261 look different in the DCP compared to the source (slower or faster).
262 skip/repeat doesn't come into effect here.
265 if (frc.change_speed) {
266 t *= video_frame_rate() * frc.factor() / film->dcp_video_frame_rate();
273 operator== (FFmpegSubtitleStream const & a, FFmpegSubtitleStream const & b)
279 operator== (FFmpegAudioStream const & a, FFmpegAudioStream const & b)
284 FFmpegAudioStream::FFmpegAudioStream (shared_ptr<const cxml::Node> node)
286 name = node->string_child ("Name");
287 id = node->number_child<int> ("Id");
288 frame_rate = node->number_child<int> ("FrameRate");
289 channels = node->number_child<int64_t> ("Channels");
290 mapping = AudioMapping (node->node_child ("Mapping"));
294 FFmpegAudioStream::as_xml (xmlpp::Node* root) const
296 root->add_child("Name")->add_child_text (name);
297 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
298 root->add_child("FrameRate")->add_child_text (lexical_cast<string> (frame_rate));
299 root->add_child("Channels")->add_child_text (lexical_cast<string> (channels));
300 mapping.as_xml (root->add_child("Mapping"));
303 /** Construct a SubtitleStream from a value returned from to_string().
304 * @param t String returned from to_string().
305 * @param v State file version.
307 FFmpegSubtitleStream::FFmpegSubtitleStream (shared_ptr<const cxml::Node> node)
309 name = node->string_child ("Name");
310 id = node->number_child<int> ("Id");
314 FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
316 root->add_child("Name")->add_child_text (name);
317 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
321 FFmpegContent::clone () const
323 return shared_ptr<Content> (new FFmpegContent (*this));
327 FFmpegContent::length () const
329 shared_ptr<const Film> film = _film.lock ();
332 FrameRateConversion frc (video_frame_rate (), film->dcp_video_frame_rate ());
333 return video_length() * frc.factor() * TIME_HZ / film->dcp_video_frame_rate ();
337 FFmpegContent::audio_mapping () const
339 boost::mutex::scoped_lock lm (_mutex);
341 if (!_audio_stream) {
342 return AudioMapping ();
345 return _audio_stream->mapping;
349 FFmpegContent::set_filters (vector<Filter const *> const & filters)
352 boost::mutex::scoped_lock lm (_mutex);
356 signal_changed (FFmpegContentProperty::FILTERS);
360 FFmpegContent::set_audio_mapping (AudioMapping m)
362 audio_stream()->mapping = m;
363 signal_changed (AudioContentProperty::AUDIO_MAPPING);