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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.
*
*/
//
// Partially based on ffmpeg code.
//
// Copyright (c) 2001 Fabrice Bellard.
// First version by Francois Revol revol@free.fr
// Seek function by Gael Chardon gael.dev@4now.net
//
#ifndef VIDEO_QT_DECODER_H
#define VIDEO_QT_DECODER_H
#include "common/scummsys.h"
#include "common/rational.h"
#include "video/video_decoder.h"
#include "audio/mixer.h"
#include "audio/decoders/quicktime_intern.h"
namespace Common {
class Rational;
}
namespace Video {
class Codec;
/**
* Decoder for QuickTime videos.
*
* Video decoder used in engines:
* - mohawk
* - sci
*/
class QuickTimeDecoder : public SeekableVideoDecoder, public Audio::QuickTimeAudioDecoder {
public:
QuickTimeDecoder();
virtual ~QuickTimeDecoder();
/**
* Returns the width of the video
* @return the width of the video
*/
uint16 getWidth() const;
/**
* Returns the height of the video
* @return the height of the video
*/
uint16 getHeight() const;
/**
* Returns the amount of frames in the video
* @return the amount of frames in the video
*/
uint32 getFrameCount() const;
/**
* Load a video file
* @param filename the filename to load
*/
bool loadFile(const Common::String &filename);
/**
* Load a QuickTime video file from a SeekableReadStream
* @param stream the stream to load
*/
bool loadStream(Common::SeekableReadStream *stream);
/**
* Close a QuickTime encoded video file
*/
void close();
/**
* Returns the palette of the video
* @return the palette of the video
*/
const byte *getPalette() { _dirtyPalette = false; return _palette; }
bool hasDirtyPalette() const { return _dirtyPalette; }
bool isVideoLoaded() const { return isOpen(); }
const Graphics::Surface *decodeNextFrame();
bool endOfVideo() const;
uint32 getElapsedTime() const;
uint32 getTimeToNextFrame() const;
Graphics::PixelFormat getPixelFormat() const;
// SeekableVideoDecoder API
void seekToFrame(uint32 frame);
void seekToTime(Audio::Timestamp time);
uint32 getDuration() const { return _duration * 1000 / _timeScale; }
protected:
struct VideoSampleDesc : public Common::QuickTimeParser::SampleDesc {
VideoSampleDesc();
~VideoSampleDesc();
char codecName[32];
uint16 colorTableId;
byte *palette;
Codec *videoCodec;
};
Common::QuickTimeParser::SampleDesc *readSampleDesc(MOVStreamContext *st, uint32 format);
private:
Common::SeekableReadStream *getNextFramePacket(uint32 &descId);
uint32 getFrameDuration();
void init();
void startAudio();
void stopAudio();
void updateAudioBuffer();
void readNextAudioChunk();
Audio::SoundHandle _audHandle;
Audio::Timestamp _audioStartOffset;
Codec *createCodec(uint32 codecTag, byte bitsPerPixel);
Codec *findDefaultVideoCodec() const;
uint32 _nextFrameStartTime;
int8 _videoStreamIndex;
uint32 findKeyFrame(uint32 frame) const;
bool _dirtyPalette;
const byte *_palette;
Graphics::Surface *_scaledSurface;
const Graphics::Surface *scaleSurface(const Graphics::Surface *frame);
Common::Rational getScaleFactorX() const;
Common::Rational getScaleFactorY() const;
void pauseVideoIntern(bool pause);
};
} // End of namespace Video
#endif
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