mirror of
https://github.com/WinampDesktop/winamp.git
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130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
#include ".\graphics.h"
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#include "ml.h"
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#include <math.h>
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HBITMAP CreateBitmapMask(HBITMAP originalBmp, int cx, int cy)
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{
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return CreateBitmapMask(originalBmp, NULL, cx, cy);
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}
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HBITMAP CreateBitmapMask(HBITMAP originalBmp, COLORREF transColor)
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{
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return CreateBitmapMask(originalBmp, transColor, 0, 0);
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}
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HBITMAP CreateBitmapMask(HBITMAP originalBmp, COLORREF transColor, int cx, int cy)
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{
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HDC hdcMem, hdcMem2;
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HBITMAP hbmMask;
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BITMAP bm;
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GetObjectW(originalBmp, sizeof(BITMAP), &bm);
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hbmMask = CreateBitmap(bm.bmWidth, bm.bmHeight, 1, 1, NULL);
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hdcMem = CreateCompatibleDC(0);
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hdcMem2 = CreateCompatibleDC(0);
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HBITMAP obmp = (HBITMAP)SelectObject(hdcMem, originalBmp);
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HBITMAP omsk = (HBITMAP)SelectObject(hdcMem2, hbmMask);
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if (transColor == NULL) transColor = GetPixel(hdcMem, cx, cy);
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COLORREF oldColorBK = SetBkColor(hdcMem, transColor);
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BitBlt(hdcMem2, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem, 0, 0, SRCCOPY);
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BitBlt(hdcMem, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem2, 0, 0, SRCINVERT);
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SetBkColor(hdcMem, oldColorBK);
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SelectObject(hdcMem, obmp);
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SelectObject(hdcMem2, omsk);
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DeleteDC(hdcMem);
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DeleteDC(hdcMem2);
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return hbmMask;
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}
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HBITMAP ConvertTo24bpp(HBITMAP bmp, int bpp)
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{
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HDC hdcMem, hdcMem2;
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HBITMAP hbm24;
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BITMAP bm;
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GetObjectW(bmp, sizeof(BITMAP), &bm);
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hdcMem = CreateCompatibleDC(0);
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hdcMem2 = CreateCompatibleDC(0);
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void *bits;
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BITMAPINFOHEADER bi;
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ZeroMemory (&bi, sizeof (bi));
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bi.biSize = sizeof (bi);
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bi.biWidth= bm.bmWidth;
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bi.biHeight = -bm.bmHeight;
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bi.biPlanes = 1;
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bi.biBitCount= (WORD)(0xFF & bpp);
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hbm24 = CreateDIBSection(hdcMem2, (BITMAPINFO *)&bi, DIB_RGB_COLORS, &bits, NULL, NULL);
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HBITMAP oBmp = (HBITMAP)SelectObject(hdcMem, bmp);
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HBITMAP oBmp24 = (HBITMAP)SelectObject(hdcMem2, hbm24);
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BitBlt(hdcMem2, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem, 0, 0, SRCCOPY);
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SelectObject(hdcMem, oBmp);
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SelectObject(hdcMem2, oBmp24);
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DeleteDC(hdcMem);
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DeleteDC(hdcMem2);
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return hbm24;
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}
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// works only with DIB
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HBITMAP PatchBitmapColors24(HBITMAP bitmap, COLORREF color1, COLORREF color2, BMPFILTERPROC filterProc)
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{
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BITMAP bm;
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COLOR24 clrBG, clrFG;
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INT x, y;
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if (!filterProc) return NULL;
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if (!GetObjectW(bitmap, sizeof(BITMAP), &bm) || !bm.bmBits || 24 != bm.bmBitsPixel) return NULL;
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clrBG.rgbRed = (BYTE)(0xFF & color1);
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clrFG.rgbRed = (BYTE)(0xFF & color2);
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clrBG.rgbGreen = (BYTE)(0xFF & (color1>>8));
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clrFG.rgbGreen = (BYTE)(0xFF & (color2>>8));
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clrBG.rgbBlue = (BYTE)(0xFF & (color1>>16));
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clrFG.rgbBlue = (BYTE)(0xFF & (color2>>16));
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for (y = 0; y < bm.bmHeight; y++)
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{
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LONG width = (bm.bmWidthBytes%4)?bm.bmWidth*4:bm.bmWidthBytes;
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// bm.bmWidthBytes can lie so is safer to go with bm.bmWidth if the dword alignment cbeck fails
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// http://blogs.msdn.com/oldnewthing/archive/2004/10/26/247918.aspx#248529
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COLOR24 *cursor = (COLOR24*)(((BYTE*)bm.bmBits) + (width*y));
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for (x = 0; x < bm.bmWidth; x++, cursor++) filterProc(&clrBG, &clrFG, cursor);
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}
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return bitmap;
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}
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void Filter1(const COLOR24 *color1, const COLOR24 *color2, COLOR24 *pixel)
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{
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pixel->rgbBlue = (BYTE)(color1->rgbBlue - (int)((1.f - (pixel->rgbBlue /255.f))* (color1->rgbBlue - color2->rgbBlue)));
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pixel->rgbGreen = (BYTE)(color1->rgbGreen - (int)((1.f - (pixel->rgbGreen /255.f))* (color1->rgbGreen - color2->rgbGreen)));
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pixel->rgbRed = (BYTE)(color1->rgbRed - (int)((1.f - (pixel->rgbRed /255.f))* (color1->rgbRed - color2->rgbRed)));
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}
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void Filter2(const COLOR24 *color1, const COLOR24 *color2, COLOR24 *pixel)
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{
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float chrom = (float)pixel->rgbBlue / 255.f;
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pixel->rgbBlue = (BYTE)(color1->rgbBlue * (1.f - chrom) + color2->rgbBlue * chrom);
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pixel->rgbGreen = (BYTE)(color1->rgbGreen * (1.f - chrom) + color2->rgbGreen * chrom);
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pixel->rgbRed = (BYTE)(color1->rgbRed * (1.f - chrom) + color2->rgbRed * chrom);
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} |