2 * Copyright 2009 Vincent Povirk for CodeWeavers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
30 #include "wincodecs_private.h"
32 #include "wine/debug.h"
34 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
36 extern BOOL WINAPI WIC_DllMain(HINSTANCE, DWORD, LPVOID) DECLSPEC_HIDDEN;
38 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
43 case DLL_PROCESS_ATTACH:
44 DisableThreadLibraryCalls(hinstDLL);
48 return WIC_DllMain(hinstDLL, fdwReason, lpvReserved);
51 HRESULT WINAPI DllCanUnloadNow(void)
56 HRESULT copy_pixels(UINT bpp, const BYTE *srcbuffer,
57 UINT srcwidth, UINT srcheight, INT srcstride,
58 const WICRect *rc, UINT dststride, UINT dstbuffersize, BYTE *dstbuffer)
61 UINT row_offset; /* number of bits into the source rows where the data starts */
68 rect.Width = srcwidth;
69 rect.Height = srcheight;
74 if (rc->X < 0 || rc->Y < 0 || rc->X+rc->Width > srcwidth || rc->Y+rc->Height > srcheight)
78 bytesperrow = ((bpp * rc->Width)+7)/8;
80 if (dststride < bytesperrow)
83 if ((dststride * (rc->Height-1)) + ((rc->Width * bpp) + 7)/8 > dstbuffersize)
86 /* if the whole bitmap is copied and the buffer format matches then it's a matter of a single memcpy */
87 if (rc->X == 0 && rc->Y == 0 && rc->Width == srcwidth && rc->Height == srcheight &&
88 srcstride == dststride && srcstride == bytesperrow)
90 memcpy(dstbuffer, srcbuffer, srcstride * srcheight);
94 row_offset = rc->X * bpp;
96 if (row_offset % 8 == 0)
98 /* everything lines up on a byte boundary */
103 src = srcbuffer + (row_offset / 8) + srcstride * rc->Y;
105 for (row=0; row < rc->Height; row++)
107 memcpy(dst, src, bytesperrow);
115 /* we have to do a weird bitwise copy. eww. */
116 FIXME("cannot reliably copy bitmap data if bpp < 8\n");
121 void reverse_bgr8(UINT bytesperpixel, LPBYTE bits, UINT width, UINT height, INT stride)
126 for (y=0; y<height; y++)
128 pixel = bits + stride * y;
130 for (x=0; x<width; x++)
135 pixel += bytesperpixel;
140 HRESULT get_pixelformat_bpp(const GUID *pixelformat, UINT *bpp)
143 IWICComponentInfo *info;
144 IWICPixelFormatInfo *formatinfo;
146 hr = CreateComponentInfo(pixelformat, &info);
149 hr = IWICComponentInfo_QueryInterface(info, &IID_IWICPixelFormatInfo, (void**)&formatinfo);
153 hr = IWICPixelFormatInfo_GetBitsPerPixel(formatinfo, bpp);
155 IWICPixelFormatInfo_Release(formatinfo);
158 IWICComponentInfo_Release(info);