--- /dev/null
+/*
+ * 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 "wincodecs_private.h"
+
+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;
+ }
+
+ 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-1)) + ((rc->Width * bpp) + 7)/8 > 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 && srcstride == bytesperrow)
+ {
+ 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 */
+ INT 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;
+ }
+}
+
+HRESULT configure_write_source(IWICBitmapFrameEncode *iface,
+ IWICBitmapSource *source, const WICRect *prc,
+ const WICPixelFormatGUID *format,
+ INT width, INT height, double xres, double yres)
+{
+ HRESULT hr = S_OK;
+
+ if (width == 0 || height == 0)
+ return WINCODEC_ERR_WRONGSTATE;
+
+ if (!format)
+ {
+ WICPixelFormatGUID src_format;
+
+ hr = IWICBitmapSource_GetPixelFormat(source, &src_format);
+ if (FAILED(hr)) return hr;
+
+ hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &src_format);
+ if (FAILED(hr)) return hr;
+ }
+
+ if (xres == 0.0 || yres == 0.0)
+ {
+ hr = IWICBitmapSource_GetResolution(source, &xres, &yres);
+ if (FAILED(hr)) return hr;
+ hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
+ if (FAILED(hr)) return hr;
+ }
+
+ return hr;
+}
+
+HRESULT write_source(IWICBitmapFrameEncode *iface,
+ IWICBitmapSource *source, const WICRect *prc,
+ const WICPixelFormatGUID *format, UINT bpp,
+ INT width, INT height)
+{
+ IWICBitmapSource *converted_source;
+ HRESULT hr=S_OK;
+ WICRect rc;
+ UINT stride;
+ BYTE* pixeldata;
+
+ if (!prc)
+ {
+ UINT src_width, src_height;
+ hr = IWICBitmapSource_GetSize(source, &src_width, &src_height);
+ if (FAILED(hr)) return hr;
+ rc.X = 0;
+ rc.Y = 0;
+ rc.Width = src_width;
+ rc.Height = src_height;
+ prc = &rc;
+ }
+
+ if (prc->Width != width || prc->Height <= 0)
+ return E_INVALIDARG;
+
+ hr = WICConvertBitmapSource(format, source, &converted_source);
+ if (FAILED(hr))
+ {
+ ERR("Failed to convert source, target format %s, %#x\n", debugstr_guid(format), hr);
+ return hr;
+ }
+
+ stride = (bpp * width + 7)/8;
+
+ pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
+ if (!pixeldata)
+ {
+ IWICBitmapSource_Release(converted_source);
+ return E_OUTOFMEMORY;
+ }
+
+ hr = IWICBitmapSource_CopyPixels(converted_source, prc, stride,
+ stride*prc->Height, pixeldata);
+
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
+ stride*prc->Height, pixeldata);
+ }
+
+ HeapFree(GetProcessHeap(), 0, pixeldata);
+ IWICBitmapSource_Release(converted_source);
+
+ return hr;
+}
+
+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;
+ }
+ }
+}
+
+HRESULT get_pixelformat_bpp(const GUID *pixelformat, UINT *bpp)
+{
+ HRESULT hr;
+ IWICComponentInfo *info;
+ IWICPixelFormatInfo *formatinfo;
+
+ hr = CreateComponentInfo(pixelformat, &info);
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICComponentInfo_QueryInterface(info, &IID_IWICPixelFormatInfo, (void**)&formatinfo);
+
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICPixelFormatInfo_GetBitsPerPixel(formatinfo, bpp);
+
+ IWICPixelFormatInfo_Release(formatinfo);
+ }
+
+ IWICComponentInfo_Release(info);
+ }
+
+ return hr;
+}
projects / reactos.git / blobdiff