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>
35 #include "video_decoder.h"
36 #include "audio_decoder.h"
39 struct AVCodecContext;
40 struct AVFilterContext;
41 struct AVFormatContext;
43 struct AVBufferContext;
51 class FFmpegAudioStream : public AudioStream
54 FFmpegAudioStream (std::string n, int i, int s, int64_t c)
60 std::string to_string () const;
62 std::string name () const {
70 static boost::shared_ptr<FFmpegAudioStream> create (std::string t, boost::optional<int> v);
73 friend class stream_test;
75 FFmpegAudioStream (std::string t, boost::optional<int> v);
81 /** @class FFmpegDecoder
82 * @brief A decoder using FFmpeg to decode content.
84 class FFmpegDecoder : public VideoDecoder, public AudioDecoder
87 FFmpegDecoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *);
90 float frames_per_second () const;
91 Size native_size () const;
92 SourceFrame length () const;
93 int time_base_numerator () const;
94 int time_base_denominator () const;
95 int sample_aspect_ratio_numerator () const;
96 int sample_aspect_ratio_denominator () const;
98 void set_audio_stream (boost::shared_ptr<AudioStream>);
99 void set_subtitle_stream (boost::shared_ptr<SubtitleStream>);
104 PixelFormat pixel_format () const;
105 AVSampleFormat audio_sample_format () const;
106 int bytes_per_audio_sample () const;
108 void rough_video_output ();
109 void precise_video_output ();
110 void filter_and_emit_video (AVFrame *);
112 void setup_general ();
115 void setup_subtitle ();
117 void maybe_add_subtitle ();
118 boost::shared_ptr<AudioBuffers> deinterleave_audio (uint8_t* data, int size);
120 std::string stream_name (AVStream* s) const;
122 AVFormatContext* _format_context;
127 AVCodecContext* _video_codec_context;
128 AVCodec* _video_codec;
129 AVCodecContext* _audio_codec_context; ///< may be 0 if there is no audio
130 AVCodec* _audio_codec; ///< may be 0 if there is no audio
131 AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
132 AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
136 boost::optional<double> _first_video;
137 boost::optional<double> _first_audio;
138 boost::optional<double> _last_rough_output;
140 std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;