1 /* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
4 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <libcxml/cxml.h>
23 #include "ffmpeg_content.h"
24 #include "ffmpeg_decoder.h"
25 #include "compose.hpp"
34 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)
55 FFmpegContent::FFmpegContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node)
57 , VideoContent (f, node)
58 , AudioContent (f, node)
60 list<shared_ptr<cxml::Node> > c = node->node_children ("SubtitleStream");
61 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
62 _subtitle_streams.push_back (shared_ptr<FFmpegSubtitleStream> (new FFmpegSubtitleStream (*i)));
63 if ((*i)->optional_number_child<int> ("Selected")) {
64 _subtitle_stream = _subtitle_streams.back ();
68 c = node->node_children ("AudioStream");
69 for (list<shared_ptr<cxml::Node> >::const_iterator i = c.begin(); i != c.end(); ++i) {
70 _audio_streams.push_back (shared_ptr<FFmpegAudioStream> (new FFmpegAudioStream (*i)));
71 if ((*i)->optional_number_child<int> ("Selected")) {
72 _audio_stream = _audio_streams.back ();
76 c = node->node_children ("Filter");
77 for (list<shared_ptr<cxml::Node> >::iterator i = c.begin(); i != c.end(); ++i) {
78 _filters.push_back (Filter::from_id ((*i)->content ()));
82 FFmpegContent::FFmpegContent (FFmpegContent const & o)
86 , _subtitle_streams (o._subtitle_streams)
87 , _subtitle_stream (o._subtitle_stream)
88 , _audio_streams (o._audio_streams)
89 , _audio_stream (o._audio_stream)
95 FFmpegContent::as_xml (xmlpp::Node* node) const
97 node->add_child("Type")->add_child_text ("FFmpeg");
98 Content::as_xml (node);
99 VideoContent::as_xml (node);
100 AudioContent::as_xml (node);
102 boost::mutex::scoped_lock lm (_mutex);
104 for (vector<shared_ptr<FFmpegSubtitleStream> >::const_iterator i = _subtitle_streams.begin(); i != _subtitle_streams.end(); ++i) {
105 xmlpp::Node* t = node->add_child("SubtitleStream");
106 if (_subtitle_stream && *i == _subtitle_stream) {
107 t->add_child("Selected")->add_child_text("1");
112 for (vector<shared_ptr<FFmpegAudioStream> >::const_iterator i = _audio_streams.begin(); i != _audio_streams.end(); ++i) {
113 xmlpp::Node* t = node->add_child("AudioStream");
114 if (_audio_stream && *i == _audio_stream) {
115 t->add_child("Selected")->add_child_text("1");
120 for (vector<Filter const *>::const_iterator i = _filters.begin(); i != _filters.end(); ++i) {
121 node->add_child("Filter")->add_child_text ((*i)->id ());
126 FFmpegContent::examine (shared_ptr<Job> job)
128 job->set_progress_unknown ();
130 Content::examine (job);
132 shared_ptr<const Film> film = _film.lock ();
135 shared_ptr<FFmpegDecoder> decoder (new FFmpegDecoder (film, shared_from_this (), true, false, false));
137 ContentVideoFrame video_length = 0;
138 video_length = decoder->video_length ();
139 film->log()->log (String::compose ("Video length obtained from header as %1 frames", decoder->video_length ()));
142 boost::mutex::scoped_lock lm (_mutex);
144 _video_length = video_length;
146 _subtitle_streams = decoder->subtitle_streams ();
147 if (!_subtitle_streams.empty ()) {
148 _subtitle_stream = _subtitle_streams.front ();
151 _audio_streams = decoder->audio_streams ();
152 if (!_audio_streams.empty ()) {
153 _audio_stream = _audio_streams.front ();
157 take_from_video_decoder (decoder);
159 signal_changed (ContentProperty::LENGTH);
160 signal_changed (FFmpegContentProperty::SUBTITLE_STREAMS);
161 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
162 signal_changed (FFmpegContentProperty::AUDIO_STREAMS);
163 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
164 signal_changed (AudioContentProperty::AUDIO_CHANNELS);
168 FFmpegContent::summary () const
170 return String::compose (_("Movie: %1"), file().filename().string());
174 FFmpegContent::information () const
176 if (video_length() == 0 || video_frame_rate() == 0) {
182 s << String::compose (_("%1 frames; %2 frames per second"), video_length(), video_frame_rate()) << "\n";
183 s << VideoContent::information ();
189 FFmpegContent::set_subtitle_stream (shared_ptr<FFmpegSubtitleStream> s)
192 boost::mutex::scoped_lock lm (_mutex);
193 _subtitle_stream = s;
196 signal_changed (FFmpegContentProperty::SUBTITLE_STREAM);
200 FFmpegContent::set_audio_stream (shared_ptr<FFmpegAudioStream> s)
203 boost::mutex::scoped_lock lm (_mutex);
207 signal_changed (FFmpegContentProperty::AUDIO_STREAM);
211 FFmpegContent::audio_length () const
213 int const cafr = content_audio_frame_rate ();
214 int const vfr = video_frame_rate ();
215 ContentVideoFrame const vl = video_length ();
217 boost::mutex::scoped_lock lm (_mutex);
218 if (!_audio_stream) {
222 return video_frames_to_audio_frames (vl, cafr, vfr);
226 FFmpegContent::audio_channels () const
228 boost::mutex::scoped_lock lm (_mutex);
230 if (!_audio_stream) {
234 return _audio_stream->channels;
238 FFmpegContent::content_audio_frame_rate () const
240 boost::mutex::scoped_lock lm (_mutex);
242 if (!_audio_stream) {
246 return _audio_stream->frame_rate;
250 FFmpegContent::output_audio_frame_rate () const
252 shared_ptr<const Film> film = _film.lock ();
255 /* Resample to a DCI-approved sample rate */
256 double t = dcp_audio_frame_rate (content_audio_frame_rate ());
258 FrameRateConversion frc (video_frame_rate(), film->dcp_video_frame_rate());
260 /* Compensate if the DCP is being run at a different frame rate
261 to the source; that is, if the video is run such that it will
262 look different in the DCP compared to the source (slower or faster).
263 skip/repeat doesn't come into effect here.
266 if (frc.change_speed) {
267 t *= video_frame_rate() * frc.factor() / film->dcp_video_frame_rate();
274 operator== (FFmpegSubtitleStream const & a, FFmpegSubtitleStream const & b)
280 operator== (FFmpegAudioStream const & a, FFmpegAudioStream const & b)
285 FFmpegAudioStream::FFmpegAudioStream (shared_ptr<const cxml::Node> node)
287 name = node->string_child ("Name");
288 id = node->number_child<int> ("Id");
289 frame_rate = node->number_child<int> ("FrameRate");
290 channels = node->number_child<int64_t> ("Channels");
291 mapping = AudioMapping (node->node_child ("Mapping"));
295 FFmpegAudioStream::as_xml (xmlpp::Node* root) const
297 root->add_child("Name")->add_child_text (name);
298 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
299 root->add_child("FrameRate")->add_child_text (lexical_cast<string> (frame_rate));
300 root->add_child("Channels")->add_child_text (lexical_cast<string> (channels));
301 mapping.as_xml (root->add_child("Mapping"));
304 /** Construct a SubtitleStream from a value returned from to_string().
305 * @param t String returned from to_string().
306 * @param v State file version.
308 FFmpegSubtitleStream::FFmpegSubtitleStream (shared_ptr<const cxml::Node> node)
310 name = node->string_child ("Name");
311 id = node->number_child<int> ("Id");
315 FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
317 root->add_child("Name")->add_child_text (name);
318 root->add_child("Id")->add_child_text (lexical_cast<string> (id));
322 FFmpegContent::clone () const
324 return shared_ptr<Content> (new FFmpegContent (*this));
328 FFmpegContent::length () const
330 shared_ptr<const Film> film = _film.lock ();
333 FrameRateConversion frc (video_frame_rate (), film->dcp_video_frame_rate ());
334 return video_length() * frc.factor() * TIME_HZ / film->dcp_video_frame_rate ();
338 FFmpegContent::audio_mapping () const
340 boost::mutex::scoped_lock lm (_mutex);
342 if (!_audio_stream) {
343 return AudioMapping ();
346 return _audio_stream->mapping;
350 FFmpegContent::set_filters (vector<Filter const *> const & filters)
353 boost::mutex::scoped_lock lm (_mutex);
357 signal_changed (FFmpegContentProperty::FILTERS);
361 FFmpegContent::set_audio_mapping (AudioMapping m)
363 audio_stream()->mapping = m;
364 signal_changed (AudioContentProperty::AUDIO_MAPPING);