VIDEO: Move TheoraDecoder to video/

1 files changed, 144 insertions, 0 deletions

diff --git a/video/theora_decoder.h b/video/theora_decoder.h
new file mode 100644
index 0000000000..459fc064d3
--- /dev/null
+++ b/video/theora_decoder.h
@@ -0,0 +1,144 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/scummsys.h"	// for USE_THEORADEC
+
+#ifdef USE_THEORADEC
+
+#ifndef VIDEO_THEORA_DECODER_H
+#define VIDEO_THEORA_DECODER_H
+
+#include "common/rational.h"
+#include "video/video_decoder.h"
+#include "audio/audiostream.h"
+#include "audio/mixer.h"
+#include "graphics/pixelformat.h"
+#include "graphics/surface.h"
+
+#include <theora/theoradec.h>
+#include <vorbis/codec.h>
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Video {
+
+/**
+ *
+ * Decoder for Theora videos.
+ * Video decoder used in engines:
+ *  - sword25
+ */
+class TheoraDecoder : public VideoDecoder {
+public:
+	TheoraDecoder(Audio::Mixer::SoundType soundType = Audio::Mixer::kMusicSoundType);
+	virtual ~TheoraDecoder();
+
+	/**
+	 * Load a video file
+	 * @param stream  the stream to load
+	 */
+	bool loadStream(Common::SeekableReadStream *stream);
+	void close();
+	void reset();
+
+	/**
+	 * Decode the next frame and return the frame's surface
+	 * @note the return surface should *not* be freed
+	 * @note this may return 0, in which case the last frame should be kept on screen
+	 */
+	const Graphics::Surface *decodeNextFrame();
+
+	bool isVideoLoaded() const { return _fileStream != 0; }
+	uint16 getWidth() const { return _displaySurface.w; }
+	uint16 getHeight() const { return _displaySurface.h; }
+
+	uint32 getFrameCount() const {
+		// It is not possible to get frame count easily
+		// I.e. seeking is required
+		assert(0);
+		return 0;
+	}
+
+	Graphics::PixelFormat getPixelFormat() const { return _displaySurface.format; }
+	uint32 getTime() const;
+	uint32 getTimeToNextFrame() const;
+
+	bool endOfVideo() const;
+
+protected:
+	// VideoDecoder API
+	void updateVolume();
+	void updateBalance();
+	void pauseVideoIntern(bool pause);
+
+private:
+	void queuePage(ogg_page *page);
+	bool queueAudio();
+	int bufferData();
+	void translateYUVtoRGBA(th_ycbcr_buffer &YUVBuffer);
+
+	Common::SeekableReadStream *_fileStream;
+	Graphics::Surface _surface;
+	Graphics::Surface _displaySurface;
+	Common::Rational _frameRate;
+	double _nextFrameStartTime;
+	bool _endOfVideo;
+	bool _endOfAudio;
+
+	Audio::Mixer::SoundType _soundType;
+	Audio::SoundHandle *_audHandle;
+	Audio::QueuingAudioStream *_audStream;
+
+	ogg_sync_state _oggSync;
+	ogg_page _oggPage;
+	ogg_packet _oggPacket;
+	ogg_stream_state _vorbisOut;
+	ogg_stream_state _theoraOut;
+	th_info _theoraInfo;
+	th_comment _theoraComment;
+	th_dec_ctx *_theoraDecode;
+	th_setup_info *_theoraSetup;
+	vorbis_info _vorbisInfo;
+	vorbis_dsp_state _vorbisDSP;
+	vorbis_block _vorbisBlock;
+	vorbis_comment _vorbisComment;
+
+	int _theoraPacket;
+	int _vorbisPacket;
+
+	int _ppLevelMax;
+	int _ppLevel;
+	int _ppInc;
+
+	// single audio fragment audio buffering
+	int _audiobufFill;
+	bool _audiobufReady;
+	ogg_int16_t *_audiobuf;
+};
+
+} // End of namespace Video
+
+#endif
+
+#endif