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DirectXTex: Added WIC_FLAGS_IGNORE_SRGB to ignore the presense of sRGB metadata in WIC files

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walbourn_cp 2013-07-31 00:39:59 -07:00
parent 5f3b34beb5
commit 8bfc1b7de3
2 changed files with 34 additions and 28 deletions
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3
DirectXTex/DirectXTex.h
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@ -192,6 +192,9 @@ namespace DirectX
WIC_FLAGS_ALL_FRAMES = 0x10,
// Loads all images in a multi-frame file, converting/resizing to match the first frame as needed, defaults to 0th frame otherwise
WIC_FLAGS_IGNORE_SRGB = 0x20,
// Ignores sRGB metadata if present in the file
WIC_FLAGS_DITHER = 0x10000,
// Use ordered 4x4 dithering for any required conversions

59
DirectXTex/DirectXTexWIC.cpp
View File

@ -272,43 +272,46 @@ static HRESULT _DecodeMetadata( _In_ DWORD flags,
if ( metadata.format == DXGI_FORMAT_UNKNOWN )
return HRESULT_FROM_WIN32( ERROR_NOT_SUPPORTED );
GUID containerFormat;
hr = decoder->GetContainerFormat( &containerFormat );
if ( FAILED(hr) )
return hr;
ScopedObject<IWICMetadataQueryReader> metareader;
hr = frame->GetMetadataQueryReader( &metareader );
if ( SUCCEEDED(hr) )
if ( !( flags & WIC_FLAGS_IGNORE_SRGB ) )
{
// Check for sRGB colorspace metadata
bool sRGB = false;
GUID containerFormat;
hr = decoder->GetContainerFormat( &containerFormat );
if ( FAILED(hr) )
return hr;
PROPVARIANT value;
PropVariantInit( &value );
if ( memcmp( &containerFormat, &GUID_ContainerFormatPng, sizeof(GUID) ) == 0 )
ScopedObject<IWICMetadataQueryReader> metareader;
hr = frame->GetMetadataQueryReader( &metareader );
if ( SUCCEEDED(hr) )
{
// Check for sRGB chunk
if ( SUCCEEDED( metareader->GetMetadataByName( L"/sRGB/RenderingIntent", &value ) ) && value.vt == VT_UI1 )
// Check for sRGB colorspace metadata
bool sRGB = false;
PROPVARIANT value;
PropVariantInit( &value );
if ( memcmp( &containerFormat, &GUID_ContainerFormatPng, sizeof(GUID) ) == 0 )
{
// Check for sRGB chunk
if ( SUCCEEDED( metareader->GetMetadataByName( L"/sRGB/RenderingIntent", &value ) ) && value.vt == VT_UI1 )
{
sRGB = true;
}
}
else if ( SUCCEEDED( metareader->GetMetadataByName( L"System.Image.ColorSpace", &value ) ) && value.vt == VT_UI2 && value.uiVal == 1 )
{
sRGB = true;
}
PropVariantClear( &value );
if ( sRGB )
metadata.format = MakeSRGB( metadata.format );
}
else if ( SUCCEEDED( metareader->GetMetadataByName( L"System.Image.ColorSpace", &value ) ) && value.vt == VT_UI2 && value.uiVal == 1 )
else if ( hr == WINCODEC_ERR_UNSUPPORTEDOPERATION )
{
sRGB = true;
// Some formats just don't support metadata (BMP, ICO, etc.), so ignore this failure
hr = S_OK;
}
PropVariantClear( &value );
if ( sRGB )
metadata.format = MakeSRGB( metadata.format );
}
else if ( hr == WINCODEC_ERR_UNSUPPORTEDOPERATION )
{
// Some formats just don't support metadata (BMP, ICO, etc.), so ignore this failure
hr = S_OK;
}
return hr;