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windowscodecs: Treat unspecified extra channels as alpha data.

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This commit is contained in:
Vincent Povirk 2011-06-14 14:30:26 -05:00 committed by Alexandre Julliard
parent 8153674c4a
commit 785f84a63c
1 changed files with 2 additions and 7 deletions
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9
dlls/windowscodecs/tiffformat.c
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@ -347,12 +347,10 @@ static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
else
switch(extra_samples[0])
{
case 0: /* Unspecified data */
decode_info->format = &GUID_WICPixelFormat32bppBGR;
break;
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->format = &GUID_WICPixelFormat32bppPBGRA;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->format = &GUID_WICPixelFormat32bppBGRA;
break;
@ -367,13 +365,10 @@ static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
else
switch(extra_samples[0])
{
case 0: /* Unspecified data */
/* decode_info->format = &GUID_WICPixelFormat64bppRGB; */
FIXME("64-bit RGB is unsupported\n");
return E_FAIL;
case 1: /* Associated (pre-multiplied) alpha data */
decode_info->format = &GUID_WICPixelFormat64bppPRGBA;
break;
case 0: /* Unspecified data */
case 2: /* Unassociated alpha data */
decode_info->format = &GUID_WICPixelFormat64bppRGBA;
break;