2 Copyright (C) 2013 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 #ifndef DCPOMATIC_FFMPEG_H
21 #define DCPOMATIC_FFMPEG_H
23 #include "file_group.h"
24 #include "ffmpeg_subtitle_period.h"
26 #include <libavcodec/avcodec.h>
28 #include <boost/shared_ptr.hpp>
29 #include <boost/thread/mutex.hpp>
31 struct AVFormatContext;
36 class FFmpegAudioStream;
42 FFmpeg (boost::shared_ptr<const FFmpegContent>);
45 boost::shared_ptr<const FFmpegContent> ffmpeg_content () const {
46 return _ffmpeg_content;
49 int avio_read (uint8_t *, int);
50 int64_t avio_seek (int64_t, int);
53 AVCodecContext* video_codec_context () const;
54 AVCodecContext* subtitle_codec_context () const;
55 ContentTime pts_offset (
56 std::vector<boost::shared_ptr<FFmpegAudioStream> > audio_streams, boost::optional<ContentTime> first_video, double video_frame_rate
59 static FFmpegSubtitlePeriod subtitle_period (AVSubtitle const & sub);
60 static std::string subtitle_id (AVSubtitle const & sub);
61 static bool subtitle_is_image (AVSubtitle const & sub);
63 boost::shared_ptr<const FFmpegContent> _ffmpeg_content;
65 uint8_t* _avio_buffer;
66 int _avio_buffer_size;
67 AVIOContext* _avio_context;
68 FileGroup _file_group;
70 AVFormatContext* _format_context;
74 /** Index of video stream within AVFormatContext */
77 /* It would appear (though not completely verified) that one must have
78 a mutex around calls to avcodec_open* and avcodec_close... and here
81 static boost::mutex _mutex;
84 void setup_general ();
85 void setup_decoders ();
87 static void ffmpeg_log_callback (void* ptr, int level, const char* fmt, va_list vl);
88 static boost::weak_ptr<Log> _ffmpeg_log;