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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 "audio/decoders/quicktime_intern.h"
#include "common/scummsys.h"
#include "video/video_decoder.h"
namespace Common {
class Rational;
}
namespace Graphics {
struct PixelFormat;
}
namespace Video {
class Codec;
/**
* Decoder for QuickTime videos.
*
* Video decoder used in engines:
* - mohawk
* - sci
*/
class QuickTimeDecoder : public VideoDecoder, public Audio::QuickTimeAudioDecoder {
public:
QuickTimeDecoder();
virtual ~QuickTimeDecoder();
bool loadFile(const Common::String &filename);
bool loadStream(Common::SeekableReadStream *stream);
void close();
uint16 getWidth() const { return _width; }
uint16 getHeight() const { return _height; }
const Graphics::Surface *decodeNextFrame();
Audio::Timestamp getDuration() const { return Audio::Timestamp(0, _duration, _timeScale); }
protected:
Common::QuickTimeParser::SampleDesc *readSampleDesc(Common::QuickTimeParser::Track *track, uint32 format);
private:
void init();
void updateAudioBuffer();
uint16 _width, _height;
Graphics::Surface *_scaledSurface;
void scaleSurface(const Graphics::Surface *src, Graphics::Surface *dst,
const Common::Rational &scaleFactorX, const Common::Rational &scaleFactorY);
class VideoSampleDesc : public Common::QuickTimeParser::SampleDesc {
public:
VideoSampleDesc(Common::QuickTimeParser::Track *parentTrack, uint32 codecTag);
~VideoSampleDesc();
void initCodec();
// TODO: Make private in the long run
uint16 _bitsPerSample;
char _codecName[32];
uint16 _colorTableId;
byte *_palette;
Codec *_videoCodec;
};
// The AudioTrackHandler is currently just a wrapper around some
// QuickTimeDecoder functions.
class AudioTrackHandler : public SeekableAudioTrack {
public:
AudioTrackHandler(QuickTimeDecoder *decoder, QuickTimeAudioTrack *audioTrack);
void updateBuffer();
protected:
Audio::SeekableAudioStream *getSeekableAudioStream() const;
private:
QuickTimeDecoder *_decoder;
QuickTimeAudioTrack *_audioTrack;
};
// The VideoTrackHandler is the bridge between the time of playback
// and the media for the given track. It calculates when to start
// tracks and at what rate to play the media using the edit list.
class VideoTrackHandler : public VideoTrack {
public:
VideoTrackHandler(QuickTimeDecoder *decoder, Common::QuickTimeParser::Track *parent);
~VideoTrackHandler();
bool endOfTrack() const;
bool isSeekable() const { return true; }
bool seek(const Audio::Timestamp &time);
Audio::Timestamp getDuration() const;
uint16 getWidth() const;
uint16 getHeight() const;
Graphics::PixelFormat getPixelFormat() const;
int getCurFrame() const { return _curFrame; }
int getFrameCount() const;
uint32 getNextFrameStartTime() const;
const Graphics::Surface *decodeNextFrame();
const byte *getPalette() const { _dirtyPalette = false; return _curPalette; }
bool hasDirtyPalette() const { return _curPalette; }
Common::Rational getScaledWidth() const;
Common::Rational getScaledHeight() const;
private:
QuickTimeDecoder *_decoder;
Common::QuickTimeParser::Track *_parent;
uint32 _curEdit;
int32 _curFrame;
uint32 _nextFrameStartTime;
Graphics::Surface *_scaledSurface;
bool _holdNextFrameStartTime;
int32 _durationOverride;
const byte *_curPalette;
mutable bool _dirtyPalette;
Common::SeekableReadStream *getNextFramePacket(uint32 &descId);
uint32 getFrameDuration();
uint32 findKeyFrame(uint32 frame) const;
void enterNewEditList(bool bufferFrames);
const Graphics::Surface *bufferNextFrame();
uint32 getRateAdjustedFrameTime() const;
uint32 getCurEditTimeOffset() const;
uint32 getCurEditTrackDuration() const;
};
};
} // End of namespace Video
#endif
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