From 7baf4ecd064a0c226ce3ceb2b83182a70328d65e Mon Sep 17 00:00:00 2001
From: Dmitry Timoshkov <dmitry@baikal.ru>
Date: Thu, 22 Nov 2012 18:27:22 +0800
Subject: [PATCH] windowscodecs: Implement QueryCapability in the GIF decoder.

---
 dlls/windowscodecs/gifformat.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/dlls/windowscodecs/gifformat.c b/dlls/windowscodecs/gifformat.c
index eb8a37be4f1..d87a6e76f96 100644
--- a/dlls/windowscodecs/gifformat.c
+++ b/dlls/windowscodecs/gifformat.c
@@ -1064,11 +1064,22 @@ static ULONG WINAPI GifDecoder_Release(IWICBitmapDecoder *iface)
     return ref;
 }
 
-static HRESULT WINAPI GifDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *pIStream,
-    DWORD *pdwCapability)
+static HRESULT WINAPI GifDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *stream,
+    DWORD *capability)
 {
-    FIXME("(%p,%p,%p): stub\n", iface, pIStream, pdwCapability);
-    return E_NOTIMPL;
+    HRESULT hr;
+
+    TRACE("(%p,%p,%p)\n", iface, stream, capability);
+
+    if (!stream || !capability) return E_INVALIDARG;
+
+    hr = IWICBitmapDecoder_Initialize(iface, stream, WICDecodeMetadataCacheOnDemand);
+    if (hr != S_OK) return hr;
+
+    *capability = WICBitmapDecoderCapabilityCanDecodeAllImages |
+                  WICBitmapDecoderCapabilityCanDecodeSomeImages |
+                  WICBitmapDecoderCapabilityCanEnumerateMetadata;
+    return S_OK;
 }
 
 static int _gif_inputfunc(GifFileType *gif, GifByteType *data, int len) {