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gdiplus: Use WIC to decode PNG files.

This commit is contained in:
Vincent Povirk 2009-09-04 09:59:46 -05:00 committed by Alexandre Julliard
parent 947e39dbc7
commit 91e0ee260b
1 changed files with 6 additions and 92 deletions
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98
dlls/gdiplus/image.c
View File

@ -1517,102 +1517,16 @@ static GpStatus decode_image_jpeg(IStream* stream, REFCLSID clsid, GpImage **ima
return decode_image_wic(stream, &CLSID_WICJpegDecoder, image);
}
static GpStatus decode_image_png(IStream* stream, REFCLSID clsid, GpImage **image)
{
return decode_image_wic(stream, &CLSID_WICPngDecoder, image);
}
static GpStatus decode_image_gif(IStream* stream, REFCLSID clsid, GpImage **image)
{
return decode_image_wic(stream, &CLSID_WICGifDecoder, image);
}
static GpStatus decode_image_olepicture_bitmap(IStream* stream, REFCLSID clsid, GpImage **image)
{
IPicture *pic;
BITMAPINFO *pbmi;
BITMAPCOREHEADER* bmch;
HBITMAP hbm;
HDC hdc;
TRACE("%p %p\n", stream, image);
if(!stream || !image)
return InvalidParameter;
if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
(LPVOID*) &pic) != S_OK){
TRACE("Could not load picture\n");
return GenericError;
}
pbmi = GdipAlloc(sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
if (!pbmi)
return OutOfMemory;
*image = GdipAlloc(sizeof(GpBitmap));
if(!*image){
GdipFree(pbmi);
return OutOfMemory;
}
(*image)->type = ImageTypeBitmap;
(*((GpBitmap**) image))->width = ipicture_pixel_width(pic);
(*((GpBitmap**) image))->height = ipicture_pixel_height(pic);
/* get the pixel format */
IPicture_get_Handle(pic, (OLE_HANDLE*)&hbm);
IPicture_get_CurDC(pic, &hdc);
(*((GpBitmap**) image))->hbitmap = hbm;
(*((GpBitmap**) image))->hdc = hdc;
(*((GpBitmap**) image))->bits = NULL;
bmch = (BITMAPCOREHEADER*) (&pbmi->bmiHeader);
bmch->bcSize = sizeof(BITMAPCOREHEADER);
if(!hdc){
HBITMAP old;
hdc = CreateCompatibleDC(0);
old = SelectObject(hdc, hbm);
GetDIBits(hdc, hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
SelectObject(hdc, old);
DeleteDC(hdc);
}
else
GetDIBits(hdc, hbm, 0, 0, NULL, pbmi, DIB_RGB_COLORS);
switch(bmch->bcBitCount)
{
case 1:
(*((GpBitmap**) image))->format = PixelFormat1bppIndexed;
break;
case 4:
(*((GpBitmap**) image))->format = PixelFormat4bppIndexed;
break;
case 8:
(*((GpBitmap**) image))->format = PixelFormat8bppIndexed;
break;
case 16:
(*((GpBitmap**) image))->format = PixelFormat16bppRGB565;
break;
case 24:
(*((GpBitmap**) image))->format = PixelFormat24bppRGB;
break;
case 32:
(*((GpBitmap**) image))->format = PixelFormat32bppRGB;
break;
case 48:
(*((GpBitmap**) image))->format = PixelFormat48bppRGB;
break;
default:
FIXME("Bit depth %d is not fully supported yet\n", bmch->bcBitCount);
(*((GpBitmap**) image))->format = (bmch->bcBitCount << 8) | PixelFormatGDI;
break;
}
GdipFree(pbmi);
(*image)->picture = pic;
(*image)->flags = ImageFlagsNone;
return Ok;
}
static GpStatus decode_image_olepicture_metafile(IStream* stream, REFCLSID clsid, GpImage **image)
{
IPicture *pic;
@ -2151,7 +2065,7 @@ static const struct image_codec codecs[NUM_CODECS] = {
/* SigMask */ png_sig_mask,
},
NULL,
decode_image_olepicture_bitmap
decode_image_png
},
{
{ /* ICO */