X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fffmpeg.h;h=834c8946c0e50679a6b4e8765ae30d3baa519ca1;hb=HEAD;hp=4d1a45da3b9c866c48d6757523bfb4d18acf364d;hpb=373f010a7f04add1f49169cbaa60cb7ae5f508d4;p=dcpomatic.git

diff --git a/src/lib/ffmpeg.h b/src/lib/ffmpeg.h
index 4d1a45da3..834c8946c 100644
--- a/src/lib/ffmpeg.h
+++ b/src/lib/ffmpeg.h
@@ -1,64 +1,87 @@
 /*
-    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+    DCP-o-matic is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
+
 #ifndef DCPOMATIC_FFMPEG_H
 #define DCPOMATIC_FFMPEG_H
 
-#include <vector>
-#include <boost/shared_ptr.hpp>
-#include <boost/thread/mutex.hpp>
+
+#include "file_group.h"
+#include "ffmpeg_subtitle_period.h"
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
 extern "C" {
 #include <libavcodec/avcodec.h>
 }
+LIBDCP_ENABLE_WARNINGS
+#include <boost/thread/mutex.hpp>
+
 
-struct AVFilterGraph;
-struct AVCodecContext;
-struct AVFilterContext;
 struct AVFormatContext;
 struct AVFrame;
-struct AVBufferContext;
-struct AVCodec;
 struct AVStream;
+struct AVIOContext;
 
 class FFmpegContent;
+class FFmpegAudioStream;
+class Log;
+
 
 class FFmpeg
 {
 public:
-	FFmpeg (boost::shared_ptr<const FFmpegContent>);
+	explicit FFmpeg (std::shared_ptr<const FFmpegContent>);
 	virtual ~FFmpeg ();
 
-	boost::shared_ptr<const FFmpegContent> ffmpeg_content () const {
+	std::shared_ptr<const FFmpegContent> ffmpeg_content () const {
 		return _ffmpeg_content;
 	}
 
+	int avio_read (uint8_t *, int);
+	int64_t avio_seek (int64_t, int);
+
 protected:
 	AVCodecContext* video_codec_context () const;
-	AVCodecContext* audio_codec_context () const;
-	
-	boost::shared_ptr<const FFmpegContent> _ffmpeg_content;
+	AVCodecContext* subtitle_codec_context () const;
+	dcpomatic::ContentTime pts_offset (
+		std::vector<std::shared_ptr<FFmpegAudioStream>> audio_streams, boost::optional<dcpomatic::ContentTime> first_video, double video_frame_rate
+		) const;
+
+	static FFmpegSubtitlePeriod subtitle_period (AVPacket const* packet, AVStream const* stream, AVSubtitle const & sub);
+
+	std::shared_ptr<const FFmpegContent> _ffmpeg_content;
+
+	uint8_t* _avio_buffer = nullptr;
+	int _avio_buffer_size = 4096;
+	AVIOContext* _avio_context = nullptr;
+	FileGroup _file_group;
 
-	AVFormatContext* _format_context;
-	AVPacket _packet;
-	AVFrame* _frame;
+	AVFormatContext* _format_context = nullptr;
+	std::vector<AVCodecContext*> _codec_context;
 
-	int _video_stream;
+	/** AVFrame used for decoding video */
+	AVFrame* _video_frame = nullptr;
+	/** Index of video stream within AVFormatContext */
+	boost::optional<int> _video_stream;
+
+	AVFrame* audio_frame (std::shared_ptr<const FFmpegAudioStream> stream);
 
 	/* It would appear (though not completely verified) that one must have
 	   a mutex around calls to avcodec_open* and avcodec_close... and here
@@ -68,8 +91,11 @@ protected:
 
 private:
 	void setup_general ();
-	void setup_video ();
-	void setup_audio ();
+	void setup_decoders ();
+
+	/** AVFrames used for decoding audio streams; accessed with audio_frame() */
+	std::map<std::shared_ptr<const FFmpegAudioStream>, AVFrame*> _audio_frame;
 };
 
+
 #endif