mirror of
https://github.com/SourMesen/Mesen.git
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116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
// This file is a part of Mesen
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// It is a heavily modified version of the zmbv.h/cpp file found in DOSBox's code.
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/*
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* Copyright (C) 2002-2011 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#include "BaseCodec.h"
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#include "miniz.h"
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#ifdef _MSC_VER
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#define INLINE __forceinline
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#else
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#define INLINE inline
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#endif
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typedef enum {
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ZMBV_FORMAT_NONE = 0x00,
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ZMBV_FORMAT_1BPP = 0x01,
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ZMBV_FORMAT_2BPP = 0x02,
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ZMBV_FORMAT_4BPP = 0x03,
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ZMBV_FORMAT_8BPP = 0x04,
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ZMBV_FORMAT_15BPP = 0x05,
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ZMBV_FORMAT_16BPP = 0x06,
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ZMBV_FORMAT_24BPP = 0x07,
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ZMBV_FORMAT_32BPP = 0x08
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} zmbv_format_t;
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class ZmbvCodec : public BaseCodec
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{
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private:
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struct FrameBlock {
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int start = 0;
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int dx = 0,dy = 0;
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};
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struct CodecVector {
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int x = 0,y = 0;
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int slot = 0;
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};
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struct KeyframeHeader {
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unsigned char high_version = 0;
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unsigned char low_version = 0;
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unsigned char compression = 0;
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unsigned char format = 0;
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unsigned char blockwidth = 0,blockheight = 0;
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};
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struct {
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int linesDone = 0;
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int writeSize = 0;
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int writeDone = 0;
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unsigned char *writeBuf = nullptr;
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} compressInfo;
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CodecVector VectorTable[512] = {};
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int VectorCount = 0;
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unsigned char *oldframe=nullptr, *newframe=nullptr;
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unsigned char *buf1=nullptr, *buf2=nullptr, *work=nullptr;
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int bufsize = 0;
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int blockcount = 0;
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FrameBlock * blocks = nullptr;
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int workUsed = 0, workPos = 0;
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int palsize = 0;
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char palette[256*4] = {};
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int height = 0, width = 0, pitch = 0;
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zmbv_format_t format = zmbv_format_t::ZMBV_FORMAT_NONE;
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int pixelsize = 0;
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uint8_t* _buf = nullptr;
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uint32_t _bufSize = 0;
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z_stream zstream = {};
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// methods
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void FreeBuffers(void);
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void CreateVectorTable(void);
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bool SetupBuffers(zmbv_format_t format, int blockwidth, int blockheight);
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template<class P> void AddXorFrame(void);
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template<class P> INLINE int PossibleBlock(int vx,int vy,FrameBlock * block);
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template<class P> INLINE int CompareBlock(int vx,int vy,FrameBlock * block);
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template<class P> INLINE void AddXorBlock(int vx,int vy,FrameBlock * block);
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int NeededSize(int _width, int _height, zmbv_format_t _format);
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void CompressLines(int lineCount, void *lineData[]);
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bool PrepareCompressFrame(int flags, zmbv_format_t _format, char * pal);
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int FinishCompressFrame(uint8_t** compressedData);
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public:
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ZmbvCodec();
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bool SetupCompress(int _width, int _height, uint32_t compressionLevel) override;
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int CompressFrame(bool isKeyFrame, uint8_t *frameData, uint8_t** compressedData) override;
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const char* GetFourCC() override;
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};
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