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/* 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.
*
* $URL$
* $Id$
*
*/
#ifndef SWORD25_THEORADECODER_H
#define SWORD25_THEORADECODER_H
#include "common/scummsys.h" // for USE_THEORADEC
#ifdef USE_THEORADEC
#include "graphics/video/video_decoder.h"
#include "sound/audiostream.h"
#include "sound/mixer.h"
#include <theora/theoradec.h>
#include <vorbis/codec.h>
namespace Common {
class SeekableReadStream;
}
namespace Sword25 {
/**
*
* Decoder for Theora videos.
* Video decoder used in engines:
* - sword25
*/
class TheoraDecoder : public Graphics::FixedRateVideoDecoder {
public:
TheoraDecoder(Audio::Mixer *mixer = 0, Audio::Mixer::SoundType soundType = Audio::Mixer::kMusicSoundType);
virtual ~TheoraDecoder();
/**
* Load a video file
* @param stream the stream to load
*/
bool load(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;
}
bool isPaused() const {
return (VideoDecoder::isPaused() || !isVideoLoaded());
}
uint16 getWidth() const {
return _surface->w;
}
uint16 getHeight() const {
return _surface->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 Graphics::PixelFormat(4, 8, 8, 8, 8, 16, 8, 0, 24);
}
uint32 getElapsedTime() const;
bool endOfVideo() const;
protected:
Common::Rational getFrameRate() const {
return _frameRate;
}
private:
void queuePage(ogg_page *page);
int bufferData();
Audio::QueuingAudioStream *createAudioStream();
private:
Common::SeekableReadStream *_fileStream;
Graphics::Surface *_surface;
Common::Rational _frameRate;
uint32 _frameCount;
Audio::Mixer *_mixer;
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;
bool _stateFlag;
int _ppLevelMax;
int _ppLevel;
int _ppInc;
// single frame video buffering
bool _videobufReady;
ogg_int64_t _videobufGranulePos;
double _videobufTime;
// single audio fragment audio buffering
int _audiobufFill;
bool _audiobufReady;
ogg_int16_t *_audiobuf;
ogg_int64_t _audiobufGranulePos; // time position of last sample
};
} // End of namespace Sword25
#endif
#endif
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