mirror of
https://github.com/libretro/scummvm.git
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196 lines
5.4 KiB
C++
196 lines
5.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef VIDEO_SMK_PLAYER_H
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#define VIDEO_SMK_PLAYER_H
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#include "common/rational.h"
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#include "graphics/pixelformat.h"
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#include "graphics/surface.h"
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#include "video/video_decoder.h"
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#include "audio/mixer.h"
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namespace Audio {
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class QueuingAudioStream;
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}
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namespace Common {
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class BitStream;
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class SeekableReadStream;
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}
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namespace Video {
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class BigHuffmanTree;
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/**
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* Decoder for Smacker v2/v4 videos.
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*
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* Based on http://wiki.multimedia.cx/index.php?title=Smacker
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* and the FFmpeg Smacker decoder (libavcodec/smacker.c), revision 16143
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* http://svn.ffmpeg.org/ffmpeg/trunk/libavcodec/smacker.c?revision=16143&view=markup
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*
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* Video decoder used in engines:
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* - agos
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* - saga
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* - scumm (he)
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* - sword1
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* - sword2
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* - toon
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*/
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class SmackerDecoder : public VideoDecoder {
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public:
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SmackerDecoder(Audio::Mixer::SoundType soundType = Audio::Mixer::kSFXSoundType);
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virtual ~SmackerDecoder();
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virtual bool loadStream(Common::SeekableReadStream *stream);
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void close();
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bool rewind();
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protected:
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void readNextPacket();
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bool supportsAudioTrackSwitching() const { return true; }
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AudioTrack *getAudioTrack(int index);
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virtual void handleAudioTrack(byte track, uint32 chunkSize, uint32 unpackedSize);
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class SmackerVideoTrack : public FixedRateVideoTrack {
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public:
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SmackerVideoTrack(uint32 width, uint32 height, uint32 frameCount, const Common::Rational &frameRate, uint32 flags, uint32 signature);
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~SmackerVideoTrack();
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bool isRewindable() const { return true; }
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bool rewind() { _curFrame = -1; return true; }
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uint16 getWidth() const;
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uint16 getHeight() const;
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Graphics::PixelFormat getPixelFormat() const;
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int getCurFrame() const { return _curFrame; }
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int getFrameCount() const { return _frameCount; }
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const Graphics::Surface *decodeNextFrame() { return _surface; }
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const byte *getPalette() const { _dirtyPalette = false; return _palette; }
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bool hasDirtyPalette() const { return _dirtyPalette; }
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void readTrees(Common::BitStream &bs, uint32 mMapSize, uint32 mClrSize, uint32 fullSize, uint32 typeSize);
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void increaseCurFrame() { _curFrame++; }
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void decodeFrame(Common::BitStream &bs);
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void unpackPalette(Common::SeekableReadStream *stream);
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protected:
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Common::Rational getFrameRate() const { return _frameRate; }
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Graphics::Surface *_surface;
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private:
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Common::Rational _frameRate;
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uint32 _flags, _signature;
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byte _palette[3 * 256];
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mutable bool _dirtyPalette;
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int _curFrame;
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uint32 _frameCount;
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BigHuffmanTree *_MMapTree;
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BigHuffmanTree *_MClrTree;
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BigHuffmanTree *_FullTree;
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BigHuffmanTree *_TypeTree;
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// Possible runs of blocks
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static uint getBlockRun(int index) { return (index <= 58) ? index + 1 : 128 << (index - 59); }
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};
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virtual SmackerVideoTrack *createVideoTrack(uint32 width, uint32 height, uint32 frameCount, const Common::Rational &frameRate, uint32 flags, uint32 signature) const;
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Common::SeekableReadStream *_fileStream;
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enum AudioCompression {
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kCompressionNone,
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kCompressionDPCM,
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kCompressionRDFT,
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kCompressionDCT
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};
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struct AudioInfo {
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AudioCompression compression;
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bool hasAudio;
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bool is16Bits;
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bool isStereo;
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uint32 sampleRate;
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};
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struct {
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uint32 signature;
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uint32 flags;
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uint32 audioSize[7];
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uint32 treesSize;
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uint32 mMapSize;
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uint32 mClrSize;
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uint32 fullSize;
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uint32 typeSize;
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AudioInfo audioInfo[7];
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uint32 dummy;
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} _header;
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uint32 *_frameSizes;
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private:
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class SmackerAudioTrack : public AudioTrack {
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public:
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SmackerAudioTrack(const AudioInfo &audioInfo, Audio::Mixer::SoundType soundType);
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~SmackerAudioTrack();
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bool isRewindable() const { return true; }
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bool rewind();
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Audio::Mixer::SoundType getSoundType() const { return _soundType; }
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void queueCompressedBuffer(byte *buffer, uint32 bufferSize, uint32 unpackedSize);
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void queuePCM(byte *buffer, uint32 bufferSize);
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protected:
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Audio::AudioStream *getAudioStream() const;
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private:
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Audio::Mixer::SoundType _soundType;
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Audio::QueuingAudioStream *_audioStream;
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AudioInfo _audioInfo;
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};
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// The FrameTypes section of a Smacker file contains an array of bytes, where
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// the 8 bits of each byte describe the contents of the corresponding frame.
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// The highest 7 bits correspond to audio frames (bit 7 is track 6, bit 6 track 5
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// and so on), so there can be up to 7 different audio tracks. When the lowest bit
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// (bit 0) is set, it denotes a frame that contains a palette record
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byte *_frameTypes;
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uint32 _firstFrameStart;
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Audio::Mixer::SoundType _soundType;
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};
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} // End of namespace Video
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#endif
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