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windowscodecs: Make JPEG decoder fallback to 96 dpi resolution for density_unit == 0 case.

This commit is contained in:
Dmitry Timoshkov 2013-03-18 14:22:13 +09:00 committed by Alexandre Julliard
parent 6ee486644a
commit fb87ee2464
1 changed files with 12 additions and 5 deletions
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17
dlls/windowscodecs/jpegformat.c
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@ -548,16 +548,23 @@ static HRESULT WINAPI JpegDecoder_Frame_GetResolution(IWICBitmapFrameDecode *ifa
EnterCriticalSection(&This->lock);
if (This->cinfo.density_unit == 2) /* pixels per centimeter */
switch (This->cinfo.density_unit)
{
case 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 */
break;
case 1: /* pixels per inch */
*pDpiX = This->cinfo.X_density;
*pDpiY = This->cinfo.Y_density;
break;
case 0: /* unknown */
default:
*pDpiX = 96.0;
*pDpiY = 96.0;
break;
}
LeaveCriticalSection(&This->lock);