| /* |
| * Copyright 2009 Vincent Povirk for CodeWeavers |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| |
| #include "config.h" |
| |
| #include <stdarg.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "objbase.h" |
| #include "wincodec.h" |
| |
| #include "wincodecs_private.h" |
| |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(wincodecs); |
| |
| extern BOOL WINAPI WIC_DllMain(HINSTANCE, DWORD, LPVOID) DECLSPEC_HIDDEN; |
| |
| BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) |
| { |
| |
| switch (fdwReason) |
| { |
| case DLL_PROCESS_ATTACH: |
| DisableThreadLibraryCalls(hinstDLL); |
| break; |
| case DLL_PROCESS_DETACH: |
| break; |
| } |
| |
| return WIC_DllMain(hinstDLL, fdwReason, lpvReserved); |
| } |
| |
| HRESULT WINAPI DllCanUnloadNow(void) |
| { |
| return S_FALSE; |
| } |
| |
| HRESULT copy_pixels(UINT bpp, const BYTE *srcbuffer, |
| UINT srcwidth, UINT srcheight, INT srcstride, |
| const WICRect *rc, UINT dststride, UINT dstbuffersize, BYTE *dstbuffer) |
| { |
| UINT bytesperrow; |
| UINT row_offset; /* number of bits into the source rows where the data starts */ |
| WICRect rect; |
| |
| if (!rc) |
| { |
| rect.X = 0; |
| rect.Y = 0; |
| rect.Width = srcwidth; |
| rect.Height = srcheight; |
| rc = ▭ |
| } |
| else |
| { |
| if (rc->X < 0 || rc->Y < 0 || rc->X+rc->Width > srcwidth || rc->Y+rc->Height > srcheight) |
| return E_INVALIDARG; |
| } |
| |
| bytesperrow = ((bpp * rc->Width)+7)/8; |
| |
| if (dststride < bytesperrow) |
| return E_INVALIDARG; |
| |
| if ((dststride * rc->Height) > dstbuffersize) |
| return E_INVALIDARG; |
| |
| /* if the whole bitmap is copied and the buffer format matches then it's a matter of a single memcpy */ |
| if (rc->X == 0 && rc->Y == 0 && rc->Width == srcwidth && rc->Height == srcheight && srcstride == dststride) |
| { |
| memcpy(dstbuffer, srcbuffer, srcstride * srcheight); |
| return S_OK; |
| } |
| |
| row_offset = rc->X * bpp; |
| |
| if (row_offset % 8 == 0) |
| { |
| /* everything lines up on a byte boundary */ |
| UINT row; |
| const BYTE *src; |
| BYTE *dst; |
| |
| src = srcbuffer + (row_offset / 8) + srcstride * rc->Y; |
| dst = dstbuffer; |
| for (row=0; row < rc->Height; row++) |
| { |
| memcpy(dst, src, bytesperrow); |
| src += srcstride; |
| dst += dststride; |
| } |
| return S_OK; |
| } |
| else |
| { |
| /* we have to do a weird bitwise copy. eww. */ |
| FIXME("cannot reliably copy bitmap data if bpp < 8\n"); |
| return E_FAIL; |
| } |
| } |
| |
| void reverse_bgr8(UINT bytesperpixel, LPBYTE bits, UINT width, UINT height, INT stride) |
| { |
| UINT x, y; |
| BYTE *pixel, temp; |
| |
| for (y=0; y<height; y++) |
| { |
| pixel = bits + stride * y; |
| |
| for (x=0; x<width; x++) |
| { |
| temp = pixel[2]; |
| pixel[2] = pixel[0]; |
| pixel[0] = temp; |
| pixel += bytesperpixel; |
| } |
| } |
| } |