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windowscodecs: Implement JpegDecoder_Frame_GetResolution.

This commit is contained in:
Vincent Povirk 2012-04-11 17:22:43 -05:00 committed by Alexandre Julliard
parent 8b3fce9b8e
commit 10a32bfed1
1 changed files with 21 additions and 2 deletions
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23
dlls/windowscodecs/jpegformat.c
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@ -528,8 +528,27 @@ static HRESULT WINAPI JpegDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *if
static HRESULT WINAPI JpegDecoder_Frame_GetResolution(IWICBitmapFrameDecode *iface,
double *pDpiX, double *pDpiY)
{
FIXME("(%p,%p,%p): stub\n", iface, pDpiX, pDpiY);
return E_NOTIMPL;
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
EnterCriticalSection(&This->lock);
if (This->cinfo.density_unit == 2) /* pixels per centimeter */
{
*pDpiX = This->cinfo.X_density * 2.54;
*pDpiY = This->cinfo.Y_density * 2.54;
}
else
{
/* 1 = pixels per inch, 0 = unknown */
*pDpiX = This->cinfo.X_density;
*pDpiY = This->cinfo.Y_density;
}
LeaveCriticalSection(&This->lock);
TRACE("(%p)->(%0.2f,%0.2f)\n", iface, *pDpiX, *pDpiY);
return S_OK;
}
static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,