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>
30 #include <libavcodec/avcodec.h>
31 #include <libpostproc/postprocess.h>
37 struct AVCodecContext;
38 struct AVFilterContext;
39 struct AVFormatContext;
41 struct AVBufferContext;
49 /** @class FFmpegDecoder
50 * @brief A decoder using FFmpeg to decode content.
52 class FFmpegDecoder : public Decoder
55 FFmpegDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *);
58 /* Methods to query our input video */
59 float frames_per_second () const;
60 Size native_size () const;
62 void set_audio_stream (boost::optional<AudioStream>);
63 void set_subtitle_stream (boost::optional<SubtitleStream>);
68 PixelFormat pixel_format () const;
69 int time_base_numerator () const;
70 int time_base_denominator () const;
71 int sample_aspect_ratio_numerator () const;
72 int sample_aspect_ratio_denominator () const;
73 AVSampleFormat audio_sample_format () const;
74 int bytes_per_audio_sample () const;
76 void setup_general ();
79 void setup_subtitle ();
81 void maybe_add_subtitle ();
82 boost::shared_ptr<AudioBuffers> deinterleave_audio (uint8_t* data, int size);
84 std::string stream_name (AVStream* s) const;
86 AVFormatContext* _format_context;
91 AVCodecContext* _video_codec_context;
92 AVCodec* _video_codec;
93 AVCodecContext* _audio_codec_context; ///< may be 0 if there is no audio
94 AVCodec* _audio_codec; ///< may be 0 if there is no audio
95 AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
96 AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
100 boost::optional<double> _first_video;
101 boost::optional<double> _first_audio;