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author | Filippos Karapetis | 2009-05-21 13:02:56 +0000 |
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committer | Filippos Karapetis | 2009-05-21 13:02:56 +0000 |
commit | b7f8990ba81f81db3243ae3f9069c4d9f12754aa (patch) | |
tree | 50f84f9e502bad1274f684b9c534144f4c6e9a88 /graphics/video/smk_decoder.h | |
parent | f583a10ec97b3f4ada56ed5e296d4143a4e10e30 (diff) | |
download | scummvm-rg350-b7f8990ba81f81db3243ae3f9069c4d9f12754aa.tar.gz scummvm-rg350-b7f8990ba81f81db3243ae3f9069c4d9f12754aa.tar.bz2 scummvm-rg350-b7f8990ba81f81db3243ae3f9069c4d9f12754aa.zip |
Renamed the DXA, SMK and FLIC video decoders to reflect the fact that they're decoders, not players
svn-id: r40759
Diffstat (limited to 'graphics/video/smk_decoder.h')
-rw-r--r-- | graphics/video/smk_decoder.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/graphics/video/smk_decoder.h b/graphics/video/smk_decoder.h new file mode 100644 index 0000000000..e70d0e6454 --- /dev/null +++ b/graphics/video/smk_decoder.h @@ -0,0 +1,129 @@ +/* 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); + 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 *_mixer; + bool _audioStarted; + Audio::AppendableAudioStream *_audioStream; + Audio::SoundHandle _audioHandle; + + BigHuffmanTree *_MMapTree; + BigHuffmanTree *_MClrTree; + BigHuffmanTree *_FullTree; + BigHuffmanTree *_TypeTree; +}; + +} // End of namespace Graphics + +#endif |