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Diffstat (limited to 'video/smk_decoder.h')
-rw-r--r-- | video/smk_decoder.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/video/smk_decoder.h b/video/smk_decoder.h new file mode 100644 index 0000000000..b441d1d64d --- /dev/null +++ b/video/smk_decoder.h @@ -0,0 +1,143 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +#ifndef GRAPHICS_VIDEO_SMK_PLAYER_H +#define GRAPHICS_VIDEO_SMK_PLAYER_H + +#include "graphics/video/video_decoder.h" +#include "sound/mixer.h" + +namespace Audio { + class QueuingAudioStream; +} + +namespace Graphics { + +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 FixedRateVideoDecoder { +public: + SmackerDecoder(Audio::Mixer *mixer, + Audio::Mixer::SoundType soundType = Audio::Mixer::kSFXSoundType); + virtual ~SmackerDecoder(); + + bool load(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 getElapsedTime() const; + const Surface *decodeNextFrame(); + PixelFormat getPixelFormat() const { return PixelFormat::createFormatCLUT8(); } + const byte *getPalette() { _dirtyPalette = false; return _palette; } + bool hasDirtyPalette() const { return _dirtyPalette; } + virtual void handleAudioTrack(byte track, uint32 chunkSize, uint32 unpackedSize); + +protected: + Common::Rational getFrameRate() const { return _frameRate; } + Common::SeekableReadStream *_fileStream; + +protected: + 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 { + 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; + // 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; + bool _dirtyPalette; + + Common::Rational _frameRate; + uint32 _frameCount; + 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 Graphics + +#endif |