Skip to content
Fetching contributors…
Cannot retrieve contributors at this time
154 lines (129 sloc) 4.26 KB
/* 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
* 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/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
* and the FFmpeg Smacker decoder (libavcodec/smacker.c), revision 16143
* Video decoder used in engines:
* - agos
* - saga
* - scumm (he)
* - sword1
* - sword2
* - toon
class SmackerDecoder : public FixedRateVideoDecoder {
SmackerDecoder(Audio::Mixer *mixer,
Audio::Mixer::SoundType soundType = Audio::Mixer::kSFXSoundType);
virtual ~SmackerDecoder();
bool loadStream(Common::SeekableReadStream *stream);
void close();
bool isVideoLoaded() const { return _fileStream != 0; }
uint16 getWidth() const { return _surface->w; }
uint16 getHeight() const { return _surface->h; }
uint32 getFrameCount() const { return _frameCount; }
uint32 getTime() const;
const Graphics::Surface *decodeNextFrame();
Graphics::PixelFormat getPixelFormat() const { return Graphics::PixelFormat::createFormatCLUT8(); }
const byte *getPalette() { _dirtyPalette = false; return _palette; }
bool hasDirtyPalette() const { return _dirtyPalette; }
virtual void handleAudioTrack(byte track, uint32 chunkSize, uint32 unpackedSize);
Common::SeekableReadStream *_fileStream;
// VideoDecoder API
void updateVolume();
void updateBalance();
// FixedRateVideoDecoder API
Common::Rational getFrameRate() const { return _frameRate; }
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);
enum AudioCompression {
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;
// 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[3 * 256];
bool _dirtyPalette;
Common::Rational _frameRate;
uint32 _frameCount;
Graphics::Surface *_surface;
Audio::Mixer::SoundType _soundType;
Audio::Mixer *_mixer;
bool _audioStarted;
Audio::QueuingAudioStream *_audioStream;
Audio::SoundHandle _audioHandle;
BigHuffmanTree *_MMapTree;
BigHuffmanTree *_MClrTree;
BigHuffmanTree *_FullTree;
BigHuffmanTree *_TypeTree;
} // End of namespace Video
Something went wrong with that request. Please try again.