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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.
*
*/
#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/mixer.h"
#include "graphics/surface.h"
#include <theora/theoradec.h>
#include <vorbis/codec.h>
namespace Common {
class SeekableReadStream;
}
namespace Audio {
class AudioStream;
class QueuingAudioStream;
}
namespace Video {
/**
*
* Decoder for Theora videos.
* Video decoder used in engines:
* - pegasus
* - sword25
* - wintermute
*/
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();
protected:
void readNextPacket();
private:
class TheoraVideoTrack : public VideoTrack {
public:
TheoraVideoTrack(const Graphics::PixelFormat &format, th_info &theoraInfo, th_setup_info *theoraSetup);
~TheoraVideoTrack();
bool endOfTrack() const { return _endOfVideo; }
uint16 getWidth() const { return _displaySurface.w; }
uint16 getHeight() const { return _displaySurface.h; }
Graphics::PixelFormat getPixelFormat() const { return _displaySurface.format; }
int getCurFrame() const { return _curFrame; }
uint32 getNextFrameStartTime() const { return (uint32)(_nextFrameStartTime * 1000); }
const Graphics::Surface *decodeNextFrame() { return &_displaySurface; }
bool decodePacket(ogg_packet &oggPacket);
void setEndOfVideo() { _endOfVideo = true; }
private:
int _curFrame;
bool _endOfVideo;
Common::Rational _frameRate;
double _nextFrameStartTime;
Graphics::Surface _surface;
Graphics::Surface _displaySurface;
th_dec_ctx *_theoraDecode;
void translateYUVtoRGBA(th_ycbcr_buffer &YUVBuffer);
};
class VorbisAudioTrack : public AudioTrack {
public:
VorbisAudioTrack(Audio::Mixer::SoundType soundType, vorbis_info &vorbisInfo);
~VorbisAudioTrack();
Audio::Mixer::SoundType getSoundType() const { return _soundType; }
bool decodeSamples();
bool hasAudio() const;
bool needsAudio() const;
void synthesizePacket(ogg_packet &oggPacket);
void setEndOfAudio() { _endOfAudio = true; }
protected:
Audio::AudioStream *getAudioStream() const;
private:
// single audio fragment audio buffering
int _audioBufferFill;
ogg_int16_t *_audioBuffer;
Audio::Mixer::SoundType _soundType;
Audio::QueuingAudioStream *_audStream;
vorbis_block _vorbisBlock;
vorbis_dsp_state _vorbisDSP;
bool _endOfAudio;
};
void queuePage(ogg_page *page);
int bufferData();
bool queueAudio();
void ensureAudioBufferSize();
Common::SeekableReadStream *_fileStream;
Audio::Mixer::SoundType _soundType;
ogg_sync_state _oggSync;
ogg_page _oggPage;
ogg_packet _oggPacket;
ogg_stream_state _theoraOut, _vorbisOut;
bool _hasVideo, _hasAudio;
vorbis_info _vorbisInfo;
TheoraVideoTrack *_videoTrack;
VorbisAudioTrack *_audioTrack;
};
} // End of namespace Video
#endif
#endif
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