2 Copyright (C) 2012-2014 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.
25 #include "video_decoder.h"
26 #include "audio_decoder.h"
27 #include "subtitle_decoder.h"
30 #include <libavcodec/avcodec.h>
32 #include <boost/shared_ptr.hpp>
33 #include <boost/thread/mutex.hpp>
38 class FFmpegAudioStream;
39 struct ffmpeg_pts_offset_test;
41 /** @class FFmpegDecoder
42 * @brief A decoder using FFmpeg to decode content.
44 class FFmpegDecoder : public VideoDecoder, public AudioDecoder, public SubtitleDecoder, public FFmpeg
47 FFmpegDecoder (boost::shared_ptr<const FFmpegContent>, boost::shared_ptr<Log>, bool fast);
50 friend struct ::ffmpeg_pts_offset_test;
52 bool pass (PassReason, bool accurate);
53 void seek (ContentTime time, bool);
56 AVSampleFormat audio_sample_format (boost::shared_ptr<FFmpegAudioStream> stream) const;
57 int bytes_per_audio_sample (boost::shared_ptr<FFmpegAudioStream> stream) const;
59 bool decode_video_packet ();
60 void decode_audio_packet ();
61 void decode_subtitle_packet ();
63 void decode_bitmap_subtitle (AVSubtitleRect const * rect, ContentTimePeriod period);
65 void maybe_add_subtitle ();
66 boost::shared_ptr<AudioBuffers> deinterleave_audio (boost::shared_ptr<FFmpegAudioStream> stream, uint8_t** data, int size);
68 std::list<ContentTimePeriod> image_subtitles_during (ContentTimePeriod, bool starting) const;
69 std::list<ContentTimePeriod> text_subtitles_during (ContentTimePeriod, bool starting) const;
71 boost::shared_ptr<Log> _log;
73 std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
74 boost::mutex _filter_graphs_mutex;
76 ContentTime _pts_offset;