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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.
*
*/
#ifndef VIDEO_SMK_PLAYER_H
#define VIDEO_SMK_PLAYER_H
#include "common/bitstream.h"
#include "common/rational.h"
#include "graphics/pixelformat.h"
#include "graphics/surface.h"
#include "video/video_decoder.h"
#include "audio/mixer.h"
namespace Audio {
class QueuingAudioStream;
}
namespace Common {
class SeekableReadStream;
}
namespace Video {
class BigHuffmanTree;
/**
* Decoder for Smacker v2/v4 videos.
*
* Based on http://wiki.multimedia.cx/index.php?title=Smacker
* and the FFmpeg Smacker decoder (libavcodec/smacker.c), revision 16143
* http://svn.ffmpeg.org/ffmpeg/trunk/libavcodec/smacker.c?revision=16143&view=markup
*
* Video decoder used in engines:
* - agos
* - saga
* - scumm (he)
* - sword1
* - sword2
* - toon
*/
class SmackerDecoder : public VideoDecoder {
public:
SmackerDecoder();
virtual ~SmackerDecoder();
virtual bool loadStream(Common::SeekableReadStream *stream);
void close();
bool rewind();
protected:
void readNextPacket();
bool supportsAudioTrackSwitching() const { return true; }
AudioTrack *getAudioTrack(int index);
virtual void handleAudioTrack(byte track, uint32 chunkSize, uint32 unpackedSize);
class SmackerVideoTrack : public FixedRateVideoTrack {
public:
SmackerVideoTrack(uint32 width, uint32 height, uint32 frameCount, const Common::Rational &frameRate, uint32 flags, uint32 signature);
~SmackerVideoTrack();
bool isRewindable() const { return true; }
bool rewind() { _curFrame = -1; return true; }
uint16 getWidth() const;
uint16 getHeight() const;
Graphics::PixelFormat getPixelFormat() const;
int getCurFrame() const { return _curFrame; }
int getFrameCount() const { return _frameCount; }
const Graphics::Surface *decodeNextFrame() { return _surface; }
const byte *getPalette() const { _dirtyPalette = false; return _palette; }
bool hasDirtyPalette() const { return _dirtyPalette; }
void readTrees(Common::BitStreamMemory8LSB &bs, uint32 mMapSize, uint32 mClrSize, uint32 fullSize, uint32 typeSize);
void increaseCurFrame() { _curFrame++; }
void decodeFrame(Common::BitStreamMemory8LSB &bs);
void unpackPalette(Common::SeekableReadStream *stream);
protected:
Common::Rational getFrameRate() const { return _frameRate; }
Graphics::Surface *_surface;
private:
Common::Rational _frameRate;
uint32 _flags, _signature;
byte _palette[3 * 256];
mutable bool _dirtyPalette;
int _curFrame;
uint32 _frameCount;
BigHuffmanTree *_MMapTree;
BigHuffmanTree *_MClrTree;
BigHuffmanTree *_FullTree;
BigHuffmanTree *_TypeTree;
// Possible runs of blocks
static uint getBlockRun(int index) { return (index <= 58) ? index + 1 : 128 << (index - 59); }
};
virtual SmackerVideoTrack *createVideoTrack(uint32 width, uint32 height, uint32 frameCount, const Common::Rational &frameRate, uint32 flags, uint32 signature) const;
Common::SeekableReadStream *_fileStream;
enum AudioCompression {
kCompressionNone,
kCompressionDPCM,
kCompressionRDFT,
kCompressionDCT
};
struct AudioInfo {
AudioCompression compression;
bool hasAudio;
bool is16Bits;
bool isStereo;
uint32 sampleRate;
};
struct {
uint32 signature;
uint32 flags;
uint32 audioSize[7];
uint32 treesSize;
uint32 mMapSize;
uint32 mClrSize;
uint32 fullSize;
uint32 typeSize;
AudioInfo audioInfo[7];
uint32 dummy;
} _header;
uint32 *_frameSizes;
private:
class SmackerAudioTrack : public AudioTrack {
public:
SmackerAudioTrack(const AudioInfo &audioInfo, Audio::Mixer::SoundType soundType);
~SmackerAudioTrack();
bool isRewindable() const { return true; }
bool rewind();
void queueCompressedBuffer(byte *buffer, uint32 bufferSize, uint32 unpackedSize);
void queuePCM(byte *buffer, uint32 bufferSize);
protected:
Audio::AudioStream *getAudioStream() const;
private:
Audio::QueuingAudioStream *_audioStream;
AudioInfo _audioInfo;
};
// The FrameTypes section of a Smacker file contains an array of bytes, where
// the 8 bits of each byte describe the contents of the corresponding frame.
// The highest 7 bits correspond to audio frames (bit 7 is track 6, bit 6 track 5
// and so on), so there can be up to 7 different audio tracks. When the lowest bit
// (bit 0) is set, it denotes a frame that contains a palette record
byte *_frameTypes;
uint32 _firstFrameStart;
};
} // End of namespace Video
#endif
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