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gdiplus: Support bitmap creation from 16-bit ddb's.

This commit is contained in:
Vincent Povirk 2012-03-29 14:18:15 -05:00 committed by Alexandre Julliard
parent 4829fcd9b2
commit 93a0897660
1 changed files with 43 additions and 28 deletions
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71
dlls/gdiplus/image.c
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@ -3520,13 +3520,53 @@ GpStatus WINGDIPAPI GdipGetEncoderParameterListSize(GpImage *image,
return NotImplemented;
}
static PixelFormat get_16bpp_format(HBITMAP hbm)
{
BITMAPV4HEADER bmh;
HDC hdc;
PixelFormat result;
hdc = CreateCompatibleDC(NULL);
memset(&bmh, 0, sizeof(bmh));
bmh.bV4Size = sizeof(bmh);
bmh.bV4Width = 1;
bmh.bV4Height = 1;
bmh.bV4V4Compression = BI_BITFIELDS;
bmh.bV4BitCount = 16;
GetDIBits(hdc, hbm, 0, 0, NULL, (BITMAPINFO*)&bmh, DIB_RGB_COLORS);
if (bmh.bV4RedMask == 0x7c00 &&
bmh.bV4GreenMask == 0x3e0 &&
bmh.bV4BlueMask == 0x1f)
{
result = PixelFormat16bppRGB555;
}
else if (bmh.bV4RedMask == 0xf800 &&
bmh.bV4GreenMask == 0x7e0 &&
bmh.bV4BlueMask == 0x1f)
{
result = PixelFormat16bppRGB565;
}
else
{
FIXME("unrecognized bitfields %x,%x,%x\n", bmh.bV4RedMask,
bmh.bV4GreenMask, bmh.bV4BlueMask);
result = PixelFormatUndefined;
}
DeleteDC(hdc);
return result;
}
/*****************************************************************************
* GdipCreateBitmapFromHBITMAP [GDIPLUS.@]
*/
GpStatus WINGDIPAPI GdipCreateBitmapFromHBITMAP(HBITMAP hbm, HPALETTE hpal, GpBitmap** bitmap)
{
BITMAP bm;
DIBSECTION dib;
GpStatus retval;
PixelFormat format;
BitmapData lockeddata;
@ -3552,35 +3592,10 @@ GpStatus WINGDIPAPI GdipCreateBitmapFromHBITMAP(HBITMAP hbm, HPALETTE hpal, GpBi
format = PixelFormat8bppIndexed;
break;
case 16:
{
if (GetObjectA(hbm, sizeof(dib), &dib) == sizeof(dib))
{
if (dib.dsBitfields[0] == 0x7c00 &&
dib.dsBitfields[1] == 0x3e0 &&
dib.dsBitfields[2] == 0x1f)
{
format = PixelFormat16bppRGB555;
}
else if (dib.dsBitfields[0] == 0xf800 &&
dib.dsBitfields[1] == 0x7e0 &&
dib.dsBitfields[2] == 0x1f)
{
format = PixelFormat16bppRGB565;
}
else
{
FIXME("unrecognized bitfields %x,%x,%x\n", dib.dsBitfields[0],
dib.dsBitfields[1], dib.dsBitfields[2]);
return InvalidParameter;
}
}
else
{
FIXME("unimplemented for 16-bit ddb\n");
format = get_16bpp_format(hbm);
if (format == PixelFormatUndefined)
return InvalidParameter;
}
break;
}
case 24:
format = PixelFormat24bppRGB;
break;