/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
+
/** @file src/ffmpeg_decoder.h
* @brief A decoder using FFmpeg to decode content.
*/
-#include <vector>
-#include <string>
-#include <stdint.h>
-#include <boost/shared_ptr.hpp>
-#include <boost/optional.hpp>
-#include <boost/thread/mutex.hpp>
+
+#include "bitmap_text.h"
+#include "decoder.h"
+#include "ffmpeg.h"
+#include "video_filter_graph_set.h"
extern "C" {
#include <libavcodec/avcodec.h>
}
-#include "util.h"
-#include "decoder.h"
-#include "video_decoder.h"
-#include "audio_decoder.h"
-#include "subtitle_decoder.h"
-#include "ffmpeg.h"
+#include <boost/thread/mutex.hpp>
+#include <stdint.h>
+
+
+class AudioBuffers;
+class FFmpegAudioStream;
+class Image;
+class Log;
+class VideoFilterGraph;
+struct ffmpeg_pts_offset_test;
-class Film;
-class FilterGraph;
-class ffmpeg_pts_offset_test;
/** @class FFmpegDecoder
* @brief A decoder using FFmpeg to decode content.
*/
-class FFmpegDecoder : public VideoDecoder, public AudioDecoder, public SubtitleDecoder, public FFmpeg
+class FFmpegDecoder : public FFmpeg, public Decoder
{
public:
- FFmpegDecoder (boost::shared_ptr<const Film>, boost::shared_ptr<const FFmpegContent>, bool video, bool audio);
- ~FFmpegDecoder ();
+ FFmpegDecoder (std::shared_ptr<const Film> film, std::shared_ptr<const FFmpegContent>, bool fast);
- void pass ();
- void seek (VideoContent::Frame, bool);
- bool done () const;
+ bool pass () override;
+ void seek (dcpomatic::ContentTime time, bool) override;
private:
- friend class ::ffmpeg_pts_offset_test;
+ friend struct ::ffmpeg_pts_offset_test;
+
+ enum class FlushResult {
+ DONE,
+ AGAIN
+ };
+
+ FlushResult flush();
- static double compute_pts_offset (double, double, float);
+ AVSampleFormat audio_sample_format (std::shared_ptr<FFmpegAudioStream> stream) const;
+ int bytes_per_audio_sample (std::shared_ptr<FFmpegAudioStream> stream) const;
- void flush ();
+ std::shared_ptr<FFmpegAudioStream> audio_stream_from_index (int index) const;
+ void process_audio_frame (std::shared_ptr<FFmpegAudioStream> stream);
- void setup_subtitle ();
+ void process_video_frame ();
- AVSampleFormat audio_sample_format () const;
- int bytes_per_audio_sample () const;
+ bool decode_and_process_video_packet (AVPacket* packet);
+ void decode_and_process_audio_packet (AVPacket* packet);
+ void decode_and_process_subtitle_packet (AVPacket* packet);
- bool decode_video_packet ();
- void decode_audio_packet ();
- void decode_subtitle_packet ();
+ BitmapText process_bitmap_subtitle (AVSubtitleRect const * rect);
+ void process_ass_subtitle (std::string ass, dcpomatic::ContentTime from);
void maybe_add_subtitle ();
- boost::shared_ptr<AudioBuffers> deinterleave_audio (uint8_t** data, int size);
- AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
- AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
-
- std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
- boost::mutex _filter_graphs_mutex;
+ FlushResult flush_codecs();
+ FlushResult flush_fill();
+
+ VideoFilterGraphSet _filter_graphs;
+
+ dcpomatic::ContentTime _pts_offset;
+ boost::optional<dcpomatic::ContentTime> _current_subtitle_to;
+ /** true if we have a subtitle which has not had emit_stop called for it yet */
+ bool _have_current_subtitle = false;
+
+ std::shared_ptr<Image> _black_image;
+
+ std::map<std::shared_ptr<FFmpegAudioStream>, boost::optional<dcpomatic::ContentTime>> _next_time;
- bool _decode_video;
- bool _decode_audio;
+ enum class FlushState {
+ CODECS,
+ AUDIO_DECODER,
+ FILL,
+ };
- /** Offset to add to FFmpeg frame timestamps to get our position (in seconds) */
- double _pts_offset;
- bool _just_sought;
+ FlushState _flush_state = FlushState::CODECS;
};