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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.
*
* $URL$
* $Id$
*
*/
/**
* Video decoder used in engines:
* - agos
* - saga
* - scumm (he)
* - sword1
* - sword2
*/
// 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
#ifndef GRAPHICS_VIDEO_SMK_PLAYER_H
#define GRAPHICS_VIDEO_SMK_PLAYER_H
#include "graphics/video/video_player.h"
#include "sound/mixer.h"
namespace Audio {
class AppendableAudioStream;
}
namespace Graphics {
class BigHuffmanTree;
/**
* Implementation of a Smacker v2/v4 video decoder
*/
class SmackerDecoder : public VideoDecoder {
public:
SmackerDecoder(Audio::Mixer *mixer,
Audio::Mixer::SoundType soundType = Audio::Mixer::kSFXSoundType);
virtual ~SmackerDecoder();
int getHeight();
int32 getAudioLag();
/**
* Load an SMK encoded video file
* @param filename the filename to load
*/
bool loadFile(const char *filename);
/**
* Close an SMK encoded video file
*/
void closeFile();
bool decodeNextFrame();
private:
void unpackPalette();
// Possible runs of blocks
uint getBlockRun(int index) { return (index <= 58) ? index + 1 : 128 << (index - 59); }
void queueCompressedBuffer(byte *buffer, uint32 bufferSize, uint32 unpackedSize, int streamNum);
struct AudioInfo {
bool isCompressed;
bool hasAudio;
bool is16Bits;
bool isStereo;
bool hasV2Compression;
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;
// 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;
byte *_frameData;
// The RGB palette
byte *_palette;
Audio::Mixer::SoundType _soundType;
Audio::Mixer *_mixer;
bool _audioStarted;
Audio::AppendableAudioStream *_audioStream;
Audio::SoundHandle _audioHandle;
BigHuffmanTree *_MMapTree;
BigHuffmanTree *_MClrTree;
BigHuffmanTree *_FullTree;
BigHuffmanTree *_TypeTree;
};
} // End of namespace Graphics
#endif
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