mfplat: Implement GetContiguousLength() for d3d9 buffer.

dlls/mfplat/buffer.c

@@ -697,13 +697,6 @@ static HRESULT WINAPI d3d9_surface_buffer_GetScanline0AndPitch(IMF2DBuffer2 *ifa
     return hr;
 }
 
-static HRESULT WINAPI d3d9_surface_buffer_GetContiguousLength(IMF2DBuffer2 *iface, DWORD *length)
-{
-    FIXME("%p, %p.\n", iface, length);
-
-    return E_NOTIMPL;
-}
-
 static HRESULT WINAPI d3d9_surface_buffer_Lock2DSize(IMF2DBuffer2 *iface, MF2DBuffer_LockFlags flags, BYTE **scanline0,
         LONG *pitch, BYTE **buffer_start, DWORD *buffer_length)
 {
@@ -748,7 +741,7 @@ static const IMF2DBuffer2Vtbl d3d9_surface_buffer_vtbl =
     d3d9_surface_buffer_Unlock2D,
     d3d9_surface_buffer_GetScanline0AndPitch,
     memory_2d_buffer_IsContiguousFormat,
-    d3d9_surface_buffer_GetContiguousLength,
+    memory_2d_buffer_GetContiguousLength,
     memory_2d_buffer_ContiguousCopyTo,
     memory_2d_buffer_ContiguousCopyFrom,
     d3d9_surface_buffer_Lock2DSize,

dlls/mfplat/tests/mfplat.c

@@ -5895,6 +5895,10 @@ static void test_MFCreateDXSurfaceBuffer(void)
     hr = pMFCreateDXSurfaceBuffer(&IID_IDirect3DSurface9, (IUnknown *)backbuffer, FALSE, &buffer);
     ok(hr == S_OK, "Failed to create a buffer, hr %#x.\n", hr);
 
+    check_interface(buffer, &IID_IMF2DBuffer, TRUE);
+    check_interface(buffer, &IID_IMF2DBuffer2, TRUE);
+    check_interface(buffer, &IID_IMFGetService, TRUE);
+
     /* Surface is accessible. */
     hr = IMFMediaBuffer_QueryInterface(buffer, &IID_IMFGetService, (void **)&gs);
     ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
@@ -5977,6 +5981,12 @@ static void test_MFCreateDXSurfaceBuffer(void)
     ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
     ok(!value, "Unexpected return value %d.\n", value);
 
+    hr = IMF2DBuffer_GetContiguousLength(_2dbuffer, NULL);
+    ok(hr == E_POINTER, "Unexpected hr %#x.\n", hr);
+    hr = IMF2DBuffer_GetContiguousLength(_2dbuffer, &length);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
+    ok(length == max_length, "Unexpected length %u.\n", length);
+
     IMF2DBuffer_Release(_2dbuffer);
 
     hr = IMFMediaBuffer_QueryInterface(buffer, &IID_IMF2DBuffer2, (void **)&_2dbuffer2);