windowscodecs: Implement GetThumbnail in the PNG frame decoder.

f52f910f · Dmitry Timoshkov · Alexandre Julliard · 560cfedc · f52f910f
Commit f52f910f authored Dec 10, 2012 by Dmitry Timoshkov Committed by Alexandre Julliard Dec 10, 2012
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pngformat.c dlls/windowscodecs/pngformat.c +6 -2

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--- a/dlls/windowscodecs/pngformat.c
+++ b/dlls/windowscodecs/pngformat.c
@@ -903,8 +903,12 @@ static HRESULT WINAPI PngDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *i
 static HRESULT WINAPI PngDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
    IWICBitmapSource **ppIThumbnail)
 {
-    FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
-    return E_NOTIMPL;
+    TRACE("(%p,%p)\n", iface, ppIThumbnail);
+
+    if (!ppIThumbnail) return E_INVALIDARG;
+
+    *ppIThumbnail = NULL;
+    return WINCODEC_ERR_CODECNOTHUMBNAIL;
 }

 static const IWICBitmapFrameDecodeVtbl PngDecoder_FrameVtbl = {