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cwebp: fix WIC/Microsoft SDK compatibility issue

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Fixes issue #115.
Define local copies of GUID_WICPixelFormat24bppRGB &
GUID_WICPixelFormat32bppRGBA (and GUID_WICPixelFormat32bppBGRA for
symmetry) to avoid link issues when building against older versions of
the SDK.

Change-Id: I2a26be1b7fe6d970feb3211cf0059e5898e3028d
This commit is contained in:
James Zern 2012-05-08 17:49:39 -07:00
parent e3302cfd73
commit 902d3e3b5f
1 changed files with 20 additions and 14 deletions
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34
examples/cwebp.c
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@ -38,16 +38,6 @@
#include <shlwapi.h>
#include <windows.h>
#include <wincodec.h>
#ifndef GUID_WICPixelFormat24bppRGB
// From Microsoft SDK 7.0a
DEFINE_GUID(GUID_WICPixelFormat24bppRGB,
0x6fddc324, 0x4e03, 0x4bfe, 0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
#endif
#ifndef GUID_WICPixelFormat32bppRGBA
DEFINE_GUID(GUID_WICPixelFormat32bppRGBA,
0xf5c7ad2d, 0x6a8d, 0x43dd, 0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
#endif
#endif /* HAVE_WINCODEC_H */
@ -108,6 +98,10 @@ static int ReadYUV(FILE* in_file, WebPPicture* const pic) {
} \
} while (0)
// modified version of DEFINE_GUID from guiddef.h.
#define WEBP_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
const GUID name = { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
#ifdef __cplusplus
#define MAKE_REFGUID(x) (x)
#else
@ -142,6 +136,18 @@ static HRESULT ReadPictureWithWIC(const char* filename,
};
int has_alpha = 0;
int i, stride;
// From Microsoft SDK 7.0a
// Create local copies for compatibility when building against earlier
// versions of the SDK.
WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_,
0xf5c7ad2d, 0x6a8d, 0x43dd,
0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f);
IFS(CoInitialize(NULL));
IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
@ -172,8 +178,8 @@ static HRESULT ReadPictureWithWIC(const char* filename,
++i) {
if (IsEqualGUID(&srcContainerFormat, alphaContainers[i])) {
has_alpha =
IsEqualGUID(&srcPixelFormat, &GUID_WICPixelFormat32bppRGBA) ||
IsEqualGUID(&srcPixelFormat, &GUID_WICPixelFormat32bppBGRA);
IsEqualGUID(&srcPixelFormat, &GUID_WICPixelFormat32bppRGBA_) ||
IsEqualGUID(&srcPixelFormat, &GUID_WICPixelFormat32bppBGRA_);
break;
}
}
@ -181,8 +187,8 @@ static HRESULT ReadPictureWithWIC(const char* filename,
// Prepare for pixel format conversion (if necessary).
IFS(IWICImagingFactory_CreateFormatConverter(pFactory, &pConverter));
IFS(IWICFormatConverter_Initialize(pConverter, (IWICBitmapSource*)pFrame,
has_alpha ? MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA)
: MAKE_REFGUID(GUID_WICPixelFormat24bppRGB),
has_alpha ? MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA_)
: MAKE_REFGUID(GUID_WICPixelFormat24bppRGB_),
WICBitmapDitherTypeNone,
NULL, 0.0, WICBitmapPaletteTypeCustom));