2 Copyright (C) 2012 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 /** @file src/ffmpeg_decoder.h
21 * @brief A decoder using FFmpeg to decode content.
27 #include <boost/shared_ptr.hpp>
28 #include <boost/optional.hpp>
29 #include <boost/thread/mutex.hpp>
31 #include <libavcodec/avcodec.h>
32 #include <libpostproc/postprocess.h>
36 #include "video_decoder.h"
37 #include "audio_decoder.h"
42 /** @class FFmpegDecoder
43 * @brief A decoder using FFmpeg to decode content.
45 class FFmpegDecoder : public VideoDecoder, public AudioDecoder, public FFmpeg
48 FFmpegDecoder (boost::shared_ptr<const Film>, boost::shared_ptr<const FFmpegContent>, bool video, bool audio);
52 void seek (VideoContent::Frame);
58 /* No copy construction */
59 FFmpegDecoder (FFmpegDecoder const &);
60 FFmpegDecoder& operator= (FFmpegDecoder const &);
62 void setup_subtitle ();
64 AVSampleFormat audio_sample_format () const;
65 int bytes_per_audio_sample () const;
66 void do_seek (VideoContent::Frame, bool, bool);
68 bool decode_video_packet ();
69 void decode_audio_packet ();
71 void maybe_add_subtitle ();
72 boost::shared_ptr<AudioBuffers> deinterleave_audio (uint8_t** data, int size);
74 AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
75 AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
77 std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
78 boost::mutex _filter_graphs_mutex;