Split examiner parts off decoder.

1 files changed, 70 insertions, 0 deletions

diff --git a/src/lib/ffmpeg.h b/src/lib/ffmpeg.h
new file mode 100644
index 000000000..dcafe17f7
--- /dev/null
+++ b/src/lib/ffmpeg.h
@@ -0,0 +1,70 @@
+/*
+    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+
+    This program 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,
+    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.
+
+*/
+
+#include <vector>
+#include <boost/shared_ptr.hpp>
+#include <boost/thread/mutex.hpp>
+extern "C" {
+#include <libavcodec/avcodec.h>
+}
+
+struct AVFilterGraph;
+struct AVCodecContext;
+struct AVFilterContext;
+struct AVFormatContext;
+struct AVFrame;
+struct AVBufferContext;
+struct AVCodec;
+struct AVStream;
+
+class FFmpegContent;
+
+class FFmpeg
+{
+public:
+	FFmpeg (boost::shared_ptr<const FFmpegContent>);
+	virtual ~FFmpeg ();
+
+	boost::shared_ptr<const FFmpegContent> ffmpeg_content () const {
+		return _ffmpeg_content;
+	}
+
+protected:
+	boost::shared_ptr<const FFmpegContent> _ffmpeg_content;
+	AVFormatContext* _format_context;
+	AVPacket _packet;
+	AVFrame* _frame;
+	int _video_stream;
+
+	AVCodecContext* _video_codec_context;
+	AVCodec* _video_codec;
+	AVCodecContext* _audio_codec_context;    ///< may be 0 if there is no audio
+	AVCodec* _audio_codec;                   ///< may be 0 if there is no audio
+
+	/* It would appear (though not completely verified) that one must have
+	   a mutex around calls to avcodec_open* and avcodec_close... and here
+	   it is.
+	*/
+	static boost::mutex _mutex;
+
+private:
+	void setup_general ();
+	void setup_video ();
+	void setup_audio ();
+};