mirror of
https://github.com/reactos/reactos.git
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254 lines
6.5 KiB
C
254 lines
6.5 KiB
C
/*
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* Copyright 2009 Vincent Povirk for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define COBJMACROS
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#include "config.h"
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "objbase.h"
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#include "wincodecs_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
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extern BOOL WINAPI WIC_DllMain(HINSTANCE, DWORD, LPVOID) DECLSPEC_HIDDEN;
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BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
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{
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switch (fdwReason)
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{
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case DLL_PROCESS_ATTACH:
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DisableThreadLibraryCalls(hinstDLL);
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break;
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case DLL_PROCESS_DETACH:
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ReleaseComponentInfos();
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break;
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}
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return WIC_DllMain(hinstDLL, fdwReason, lpvReserved);
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}
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HRESULT WINAPI DllCanUnloadNow(void)
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{
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return S_FALSE;
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}
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HRESULT copy_pixels(UINT bpp, const BYTE *srcbuffer,
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UINT srcwidth, UINT srcheight, INT srcstride,
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const WICRect *rc, UINT dststride, UINT dstbuffersize, BYTE *dstbuffer)
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{
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UINT bytesperrow;
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UINT row_offset; /* number of bits into the source rows where the data starts */
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WICRect rect;
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if (!rc)
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{
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rect.X = 0;
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rect.Y = 0;
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rect.Width = srcwidth;
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rect.Height = srcheight;
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rc = ▭
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}
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else
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{
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if (rc->X < 0 || rc->Y < 0 || rc->X+rc->Width > srcwidth || rc->Y+rc->Height > srcheight)
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return E_INVALIDARG;
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}
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bytesperrow = ((bpp * rc->Width)+7)/8;
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if (dststride < bytesperrow)
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return E_INVALIDARG;
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if ((dststride * (rc->Height-1)) + bytesperrow > dstbuffersize)
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return E_INVALIDARG;
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/* if the whole bitmap is copied and the buffer format matches then it's a matter of a single memcpy */
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if (rc->X == 0 && rc->Y == 0 && rc->Width == srcwidth && rc->Height == srcheight &&
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srcstride == dststride && srcstride == bytesperrow)
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{
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memcpy(dstbuffer, srcbuffer, srcstride * srcheight);
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return S_OK;
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}
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row_offset = rc->X * bpp;
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if (row_offset % 8 == 0)
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{
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/* everything lines up on a byte boundary */
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INT row;
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const BYTE *src;
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BYTE *dst;
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src = srcbuffer + (row_offset / 8) + srcstride * rc->Y;
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dst = dstbuffer;
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for (row=0; row < rc->Height; row++)
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{
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memcpy(dst, src, bytesperrow);
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src += srcstride;
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dst += dststride;
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}
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return S_OK;
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}
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else
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{
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/* we have to do a weird bitwise copy. eww. */
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FIXME("cannot reliably copy bitmap data if bpp < 8\n");
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return E_FAIL;
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}
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}
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HRESULT configure_write_source(IWICBitmapFrameEncode *iface,
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IWICBitmapSource *source, const WICRect *prc,
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const WICPixelFormatGUID *format,
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INT width, INT height, double xres, double yres)
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{
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HRESULT hr = S_OK;
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if (width == 0 || height == 0)
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return WINCODEC_ERR_WRONGSTATE;
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if (!format)
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{
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WICPixelFormatGUID src_format;
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hr = IWICBitmapSource_GetPixelFormat(source, &src_format);
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if (FAILED(hr)) return hr;
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hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &src_format);
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if (FAILED(hr)) return hr;
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}
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if (xres == 0.0 || yres == 0.0)
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{
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hr = IWICBitmapSource_GetResolution(source, &xres, &yres);
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if (FAILED(hr)) return hr;
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hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
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if (FAILED(hr)) return hr;
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}
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return hr;
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}
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HRESULT write_source(IWICBitmapFrameEncode *iface,
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IWICBitmapSource *source, const WICRect *prc,
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const WICPixelFormatGUID *format, UINT bpp,
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INT width, INT height)
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{
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IWICBitmapSource *converted_source;
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HRESULT hr=S_OK;
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WICRect rc;
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UINT stride;
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BYTE* pixeldata;
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if (!prc)
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{
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UINT src_width, src_height;
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hr = IWICBitmapSource_GetSize(source, &src_width, &src_height);
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if (FAILED(hr)) return hr;
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rc.X = 0;
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rc.Y = 0;
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rc.Width = src_width;
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rc.Height = src_height;
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prc = &rc;
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}
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if (prc->Width != width || prc->Height <= 0)
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return E_INVALIDARG;
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hr = WICConvertBitmapSource(format, source, &converted_source);
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if (FAILED(hr))
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{
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ERR("Failed to convert source, target format %s, %#x\n", debugstr_guid(format), hr);
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return E_NOTIMPL;
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}
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stride = (bpp * width + 7)/8;
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pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
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if (!pixeldata)
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{
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IWICBitmapSource_Release(converted_source);
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return E_OUTOFMEMORY;
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}
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hr = IWICBitmapSource_CopyPixels(converted_source, prc, stride,
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stride*prc->Height, pixeldata);
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if (SUCCEEDED(hr))
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{
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hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
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stride*prc->Height, pixeldata);
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}
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HeapFree(GetProcessHeap(), 0, pixeldata);
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IWICBitmapSource_Release(converted_source);
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return hr;
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}
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void reverse_bgr8(UINT bytesperpixel, LPBYTE bits, UINT width, UINT height, INT stride)
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{
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UINT x, y;
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BYTE *pixel, temp;
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for (y=0; y<height; y++)
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{
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pixel = bits + stride * y;
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for (x=0; x<width; x++)
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{
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temp = pixel[2];
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pixel[2] = pixel[0];
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pixel[0] = temp;
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pixel += bytesperpixel;
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}
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}
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}
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HRESULT get_pixelformat_bpp(const GUID *pixelformat, UINT *bpp)
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{
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HRESULT hr;
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IWICComponentInfo *info;
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IWICPixelFormatInfo *formatinfo;
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hr = CreateComponentInfo(pixelformat, &info);
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if (SUCCEEDED(hr))
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{
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hr = IWICComponentInfo_QueryInterface(info, &IID_IWICPixelFormatInfo, (void**)&formatinfo);
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if (SUCCEEDED(hr))
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{
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hr = IWICPixelFormatInfo_GetBitsPerPixel(formatinfo, bpp);
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IWICPixelFormatInfo_Release(formatinfo);
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}
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IWICComponentInfo_Release(info);
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}
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return hr;
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}
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