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windowscodecs: Do not assume that vtable is the first element of the object, avoid not necessary casts.

This commit is contained in:
Dmitry Timoshkov 2012-07-24 15:07:15 +09:00 committed by Alexandre Julliard
parent f97bc0fa2d
commit 19479795d9
1 changed files with 7 additions and 6 deletions
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13
dlls/windowscodecs/gifformat.c
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@ -72,7 +72,7 @@ static HRESULT WINAPI GifFrameDecode_QueryInterface(IWICBitmapFrameDecode *iface
IsEqualIID(&IID_IWICBitmapSource, iid) || IsEqualIID(&IID_IWICBitmapSource, iid) ||
IsEqualIID(&IID_IWICBitmapFrameDecode, iid)) IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
{ {
*ppv = This; *ppv = &This->IWICBitmapFrameDecode_iface;
} }
else else
{ {
@ -299,9 +299,10 @@ static HRESULT WINAPI GifDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID
if (!ppv) return E_INVALIDARG; if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IWICBitmapDecoder, iid)) if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapDecoder, iid))
{ {
*ppv = This; *ppv = &This->IWICBitmapDecoder_iface;
} }
else else
{ {
@ -507,7 +508,7 @@ static HRESULT WINAPI GifDecoder_GetFrame(IWICBitmapDecoder *iface,
IWICBitmapDecoder_AddRef(iface); IWICBitmapDecoder_AddRef(iface);
result->parent = This; result->parent = This;
*ppIBitmapFrame = (IWICBitmapFrameDecode*)result; *ppIBitmapFrame = &result->IWICBitmapFrameDecode_iface;
return S_OK; return S_OK;
} }
@ -550,8 +551,8 @@ HRESULT GifDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
InitializeCriticalSection(&This->lock); InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": GifDecoder.lock"); This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": GifDecoder.lock");
ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv); ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
IUnknown_Release((IUnknown*)This); IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
return ret; return ret;
} }