wineboot: Update Portuguese (Brazilian) translation.
[wine/multimedia.git] / dlls / windowscodecs / main.c
blob7ec5d410e71b68d4c88c088d85bcddfec5cb2b5a
1 /*
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
20 #include "config.h"
22 #include <stdarg.h>
24 #include "windef.h"
25 #include "winbase.h"
26 #include "objbase.h"
27 #include "wincodec.h"
29 #include "wincodecs_private.h"
31 #include "wine/debug.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
35 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
38 switch (fdwReason)
40 case DLL_WINE_PREATTACH:
41 return FALSE; /* prefer native version */
42 case DLL_PROCESS_ATTACH:
43 DisableThreadLibraryCalls(hinstDLL);
44 break;
45 case DLL_PROCESS_DETACH:
46 break;
49 return TRUE;
52 HRESULT copy_pixels(UINT bpp, const BYTE *srcbuffer,
53 UINT srcwidth, UINT srcheight, INT srcstride,
54 const WICRect *rc, UINT dststride, UINT dstbuffersize, BYTE *dstbuffer)
56 UINT bytesperrow;
57 UINT row_offset; /* number of bits into the source rows where the data starts */
59 if (rc->X < 0 || rc->Y < 0 || rc->X+rc->Width > srcwidth || rc->Y+rc->Height > srcheight)
60 return E_INVALIDARG;
62 bytesperrow = ((bpp * rc->Width)+7)/8;
64 if (dststride < bytesperrow)
65 return E_INVALIDARG;
67 if ((dststride * rc->Height) > dstbuffersize)
68 return E_INVALIDARG;
70 row_offset = rc->X * bpp;
72 if (row_offset % 8 == 0)
74 /* everything lines up on a byte boundary */
75 UINT row;
76 const BYTE *src;
77 BYTE *dst;
79 src = srcbuffer + (row_offset / 8) + srcstride * rc->Y;
80 dst = dstbuffer;
81 for (row=0; row < rc->Height; row++)
83 memcpy(dst, src, bytesperrow);
84 src += srcstride;
85 dst += dststride;
87 return S_OK;
89 else
91 /* we have to do a weird bitwise copy. eww. */
92 FIXME("cannot reliably copy bitmap data if bpp < 8\n");
93 return E_FAIL;