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msrle32: Constify some variables.
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077e9c22b8
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@ -60,23 +60,27 @@ static BOOL isSupportedMRLE(LPCBITMAPINFOHEADER lpbi);
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static BYTE MSRLE32_GetNearestPaletteIndex(UINT count, const RGBQUAD *clrs, RGBQUAD clr);
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/* compression functions */
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static void computeInternalFrame(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn, LPBYTE lpIn);
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static void computeInternalFrame(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn, const BYTE *lpIn);
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static LONG MSRLE32_GetMaxCompressedSize(LPCBITMAPINFOHEADER lpbi);
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static LRESULT MSRLE32_CompressRLE4(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lpIn, LPBITMAPINFOHEADER lpbiOut, LPBYTE lpOut, BOOL isKey);
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static LRESULT MSRLE32_CompressRLE8(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lpIn, LPBITMAPINFOHEADER lpbiOut, LPBYTE lpOut, BOOL isKey);
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static LRESULT MSRLE32_CompressRLE4(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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const BYTE *lpIn, LPBITMAPINFOHEADER lpbiOut,
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LPBYTE lpOut, BOOL isKey);
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static LRESULT MSRLE32_CompressRLE8(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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const BYTE *lpIn, LPBITMAPINFOHEADER lpbiOut,
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LPBYTE lpOut, BOOL isKey);
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/* decompression functions */
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static LRESULT MSRLE32_DecompressRLE4(CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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LPBYTE lpIn, LPBYTE lpOut);
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static LRESULT MSRLE32_DecompressRLE8(CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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LPBYTE lpIn, LPBYTE lpOut);
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static LRESULT MSRLE32_DecompressRLE4(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LPBYTE lpOut);
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static LRESULT MSRLE32_DecompressRLE8(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LPBYTE lpOut);
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/* API functions */
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static LRESULT CompressGetFormat(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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LPBITMAPINFOHEADER lpbiOut);
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static LRESULT CompressGetSize(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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LPCBITMAPINFOHEADER lpbiOut);
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static LRESULT CompressQuery(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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static LRESULT CompressQuery(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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LPCBITMAPINFOHEADER lpbiOut);
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static LRESULT CompressBegin(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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LPCBITMAPINFOHEADER lpbiOut);
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@ -183,7 +187,7 @@ static BYTE MSRLE32_GetNearestPaletteIndex(UINT count, const RGBQUAD *clrs, RGBQ
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/*****************************************************************************/
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void computeInternalFrame(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn, LPBYTE lpIn)
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void computeInternalFrame(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn, const BYTE *lpIn)
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{
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WORD wIntensityTbl[256];
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DWORD lInLine, lOutLine;
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@ -258,7 +262,7 @@ static LONG MSRLE32_GetMaxCompressedSize(LPCBITMAPINFOHEADER lpbi)
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* lpA => previous pos in current frame
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* lpB => current pos in current frame
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*/
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static INT countDiffRLE4(LPWORD lpP, LPWORD lpA, LPWORD lpB, INT pos, LONG lDist, LONG width)
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static INT countDiffRLE4(const WORD *lpP, const WORD *lpA, const WORD *lpB, INT pos, LONG lDist, LONG width)
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{
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INT count;
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WORD clr1, clr2;
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@ -317,7 +321,7 @@ static INT countDiffRLE4(LPWORD lpP, LPWORD lpA, LPWORD lpB, INT pos, LONG lDist
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* lpA => previous pos in current frame
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* lpB => current pos in current frame
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*/
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static INT countDiffRLE8(LPWORD lpP, LPWORD lpA, LPWORD lpB, INT pos, LONG lDist, LONG width)
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static INT countDiffRLE8(const WORD *lpP, const WORD *lpA, const WORD *lpB, INT pos, LONG lDist, LONG width)
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{
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INT count;
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@ -346,7 +350,11 @@ static INT countDiffRLE8(LPWORD lpP, LPWORD lpA, LPWORD lpB, INT pos, LONG lDist
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return count;
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}
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static INT MSRLE32_CompressRLE4Line(CodecInfo *pi, LPWORD lpP, LPWORD lpC, LPCBITMAPINFOHEADER lpbi, BYTE *lpIn, LONG lDist, INT x, LPBYTE *ppOut, DWORD *lpSizeImage)
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static INT MSRLE32_CompressRLE4Line(const CodecInfo *pi, const WORD *lpP,
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const WORD *lpC, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LONG lDist,
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INT x, LPBYTE *ppOut,
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DWORD *lpSizeImage)
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{
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LPBYTE lpOut = *ppOut;
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INT count, pos;
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@ -445,7 +453,11 @@ static INT MSRLE32_CompressRLE4Line(CodecInfo *pi, LPWORD lpP, LPWORD lpC, LPCBI
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return x;
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}
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static INT MSRLE32_CompressRLE8Line(CodecInfo *pi, LPWORD lpP, LPWORD lpC, LPCBITMAPINFOHEADER lpbi, BYTE *lpIn, LONG lDist, INT x, LPBYTE *ppOut, DWORD *lpSizeImage)
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static INT MSRLE32_CompressRLE8Line(const CodecInfo *pi, const WORD *lpP,
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const WORD *lpC, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LONG lDist,
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INT x, LPBYTE *ppOut,
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DWORD *lpSizeImage)
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{
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LPBYTE lpOut = *ppOut;
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INT count, pos;
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@ -528,7 +540,9 @@ static INT MSRLE32_CompressRLE8Line(CodecInfo *pi, LPWORD lpP, LPWORD lpC, LPCBI
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return x;
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}
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LRESULT MSRLE32_CompressRLE4(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lpIn, LPBITMAPINFOHEADER lpbiOut, LPBYTE lpOut, BOOL isKey)
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LRESULT MSRLE32_CompressRLE4(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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const BYTE *lpIn, LPBITMAPINFOHEADER lpbiOut,
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LPBYTE lpOut, BOOL isKey)
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{
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LPWORD lpC;
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LONG lLine, lInLine, lDist;
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@ -680,7 +694,9 @@ LRESULT MSRLE32_CompressRLE4(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lp
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return ICERR_OK;
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}
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LRESULT MSRLE32_CompressRLE8(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lpIn, LPBITMAPINFOHEADER lpbiOut, LPBYTE lpOut, BOOL isKey)
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LRESULT MSRLE32_CompressRLE8(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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const BYTE *lpIn, LPBITMAPINFOHEADER lpbiOut,
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LPBYTE lpOut, BOOL isKey)
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{
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LPWORD lpC;
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LONG lDist, lInLine, lLine;
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@ -820,8 +836,8 @@ LRESULT MSRLE32_CompressRLE8(CodecInfo *pi, LPBITMAPINFOHEADER lpbiIn, LPBYTE lp
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/*****************************************************************************/
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static LRESULT MSRLE32_DecompressRLE4(CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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LPBYTE lpIn, LPBYTE lpOut)
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static LRESULT MSRLE32_DecompressRLE4(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LPBYTE lpOut)
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{
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int bytes_per_pixel;
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int line_size;
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@ -982,8 +998,8 @@ static LRESULT MSRLE32_DecompressRLE4(CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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return ICERR_OK;
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}
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static LRESULT MSRLE32_DecompressRLE8(CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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LPBYTE lpIn, LPBYTE lpOut)
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static LRESULT MSRLE32_DecompressRLE8(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbi,
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const BYTE *lpIn, LPBYTE lpOut)
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{
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int bytes_per_pixel;
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int line_size;
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@ -1153,7 +1169,7 @@ static LRESULT Close(CodecInfo *pi)
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return 1;
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}
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static LRESULT GetInfo(CodecInfo *pi, ICINFO *icinfo, DWORD dwSize)
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static LRESULT GetInfo(const CodecInfo *pi, ICINFO *icinfo, DWORD dwSize)
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{
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/* pre-condition */
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assert(pi != NULL);
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@ -1192,7 +1208,7 @@ static LRESULT SetQuality(CodecInfo *pi, LONG lQuality)
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return ICERR_OK;
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}
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static LRESULT Configure(CodecInfo *pi, HWND hWnd)
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static LRESULT Configure(const CodecInfo *pi, HWND hWnd)
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{
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/* pre-condition */
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assert(pi != NULL);
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@ -1313,7 +1329,7 @@ static LRESULT CompressGetSize(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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return MSRLE32_GetMaxCompressedSize(lpbiOut);
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}
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static LRESULT CompressQuery(CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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static LRESULT CompressQuery(const CodecInfo *pi, LPCBITMAPINFOHEADER lpbiIn,
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LPCBITMAPINFOHEADER lpbiOut)
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{
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/* pre-condition */
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