windowscodecs: Implement DdsFrameEncode_SetPixelFormat.

dlls/windowscodecs/ddsformat.c

@@ -1651,8 +1651,30 @@ static HRESULT WINAPI DdsFrameEncode_SetResolution(IWICBitmapFrameEncode *iface,
 static HRESULT WINAPI DdsFrameEncode_SetPixelFormat(IWICBitmapFrameEncode *iface,
                                                     WICPixelFormatGUID *pixelFormat)
 {
-    FIXME("(%p,%s): stub\n", iface, debugstr_guid(pixelFormat));
-    return E_NOTIMPL;
+    DdsFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
+    HRESULT hr;
+
+    TRACE("(%p,%s)\n", iface, debugstr_guid(pixelFormat));
+
+    EnterCriticalSection(&This->parent->lock);
+
+    if (!This->initialized)
+    {
+        hr = WINCODEC_ERR_NOTINITIALIZED;
+    }
+    else if (This->frame_created)
+    {
+        hr = WINCODEC_ERR_WRONGSTATE;
+    }
+    else
+    {
+        *pixelFormat = GUID_WICPixelFormat32bppBGRA;
+        hr = S_OK;
+    }
+
+    LeaveCriticalSection(&This->parent->lock);
+
+    return hr;
 }
 
 static HRESULT WINAPI DdsFrameEncode_SetColorContexts(IWICBitmapFrameEncode *iface,

dlls/windowscodecs/tests/ddsformat.c

@@ -1519,7 +1519,6 @@ static void test_dds_encoder_pixel_format(void)
         IWICBitmapEncoder_CreateNewFrame(encoder, &frame, NULL);
 
         hr = IWICBitmapFrameEncode_SetPixelFormat(frame, &format);
-        todo_wine
         ok(hr == WINCODEC_ERR_NOTINITIALIZED, "SetPixelFormat got unexpected hr %#x\n", hr);
 
         IWICBitmapFrameEncode_Initialize(frame, NULL);
@@ -1528,11 +1527,9 @@ static void test_dds_encoder_pixel_format(void)
         {
             format = *(test_formats[j]);
             hr = IWICBitmapFrameEncode_SetPixelFormat(frame, &format);
-            todo_wine
             ok(hr == S_OK, "Test %u: SetPixelFormat failed, hr %#x\n", j, hr);
-            if (hr == S_OK)
-                ok(IsEqualGUID(&format, &GUID_WICPixelFormat32bppBGRA),
-                   "Test %u: Got unexpected GUID %s\n", j, debugstr_guid(&format));
+            ok(IsEqualGUID(&format, &GUID_WICPixelFormat32bppBGRA),
+               "Test %u: Got unexpected GUID %s\n", j, debugstr_guid(&format));
         }
 
         IWICBitmapFrameEncode_Release(frame);