[2/2] windowscodecs: Implement QueryCapability in the TIFF decoder. Take 2.

[Dmitry Timoshkov]

---
 dlls/windowscodecs/tests/tiffformat.c |  7 -------
 dlls/windowscodecs/tiffformat.c       | 19 +++++++++++++++----
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/dlls/windowscodecs/tests/tiffformat.c b/dlls/windowscodecs/tests/tiffformat.c
index 4cbda4d..d8cb10a 100644
--- a/dlls/windowscodecs/tests/tiffformat.c
+++ b/dlls/windowscodecs/tests/tiffformat.c
@@ -212,31 +212,25 @@ static void test_QueryCapability(void)
 
     capability = 0xdeadbeef;
     hr = IWICBitmapDecoder_QueryCapability(decoder, stream, &capability);
-todo_wine
     ok(hr == S_OK, "QueryCapability error %#x\n", hr);
-todo_wine
     ok(capability == exp_caps || capability == exp_caps_xp,
        "expected %#x, got %#x\n", exp_caps, capability);
 
     frame_count = 0xdeadbeef;
     hr = IWICBitmapDecoder_GetFrameCount(decoder, &frame_count);
     ok(hr == S_OK, "GetFrameCount error %#x\n", hr);
-todo_wine
     ok(frame_count == 1, "expected 1, got %u\n", frame_count);
 
     pos.QuadPart = 0;
     hr = IStream_Seek(stream, pos, SEEK_CUR, &cur_pos);
     ok(hr == S_OK, "IStream_Seek error %#x\n", hr);
-todo_wine
     ok(cur_pos.QuadPart > 4 && cur_pos.QuadPart < sizeof(tiff_1bpp_data),
        "current stream pos is at %x/%x\n", cur_pos.u.LowPart, cur_pos.u.HighPart);
 
     hr = IWICBitmapDecoder_QueryCapability(decoder, stream, &capability);
-todo_wine
     ok(hr == WINCODEC_ERR_WRONGSTATE, "expected WINCODEC_ERR_WRONGSTATE, got %#x\n", hr);
 
     hr = IWICBitmapDecoder_Initialize(decoder, stream, WICDecodeMetadataCacheOnDemand);
-todo_wine
     ok(hr == WINCODEC_ERR_WRONGSTATE, "expected WINCODEC_ERR_WRONGSTATE, got %#x\n", hr);
 
     IWICBitmapDecoder_Release(decoder);
@@ -261,7 +255,6 @@ todo_wine
     ok(hr == WINCODEC_ERR_WRONGSTATE, "expected WINCODEC_ERR_WRONGSTATE, got %#x\n", hr);
 
     hr = IWICBitmapDecoder_QueryCapability(decoder, stream, &capability);
-todo_wine
     ok(hr == WINCODEC_ERR_WRONGSTATE, "expected WINCODEC_ERR_WRONGSTATE, got %#x\n", hr);
 
     IWICBitmapDecoder_Release(decoder);
diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index f22d9f6..bacc9c5 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -550,11 +550,22 @@ static ULONG WINAPI TiffDecoder_Release(IWICBitmapDecoder *iface)
     return ref;
 }
 
-static HRESULT WINAPI TiffDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *pIStream,
-    DWORD *pdwCapability)
+static HRESULT WINAPI TiffDecoder_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 HRESULT WINAPI TiffDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
-- 
1.7.12.4