1 files changed, 93 insertions, 0 deletions
diff --git a/src/plugins/multimedia/windows/evr/evrhelpers_p.h b/src/plugins/multimedia/windows/evr/evrhelpers_p.h
new file mode 100644
index 000000000..30779c835
--- /dev/null
+++ b/src/plugins/multimedia/windows/evr/evrhelpers_p.h
@@ -0,0 +1,93 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef EVRHELPERS_H
+#define EVRHELPERS_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qvideoframe.h>
+#include <d3d9.h>
+#include <dxva2api.h>
+#include <evr9.h>
+#include <evr.h>
+#include <mfidl.h>
+#include <mfapi.h>
+#include <mferror.h>
+#include <private/quniquehandle_p.h>
+
+QT_BEGIN_NAMESPACE
+
+template<class T>
+static inline void qt_evr_safe_release(T **unk)
+{
+    if (*unk) {
+        (*unk)->Release();
+        *unk = NULL;
+    }
+}
+
+HRESULT qt_evr_getFourCC(IMFMediaType *type, DWORD *fourCC);
+
+bool qt_evr_areMediaTypesEqual(IMFMediaType *type1, IMFMediaType *type2);
+
+HRESULT qt_evr_validateVideoArea(const MFVideoArea& area, UINT32 width, UINT32 height);
+
+bool qt_evr_isSampleTimePassed(IMFClock *clock, IMFSample *sample);
+
+inline float qt_evr_MFOffsetToFloat(const MFOffset& offset)
+{
+    return offset.value + (float(offset.fract) / 65536);
+}
+
+inline MFOffset qt_evr_makeMFOffset(float v)
+{
+    MFOffset offset;
+    offset.value = short(v);
+    offset.fract = WORD(65536 * (v-offset.value));
+    return offset;
+}
+
+inline MFVideoArea qt_evr_makeMFArea(float x, float y, DWORD width, DWORD height)
+{
+    MFVideoArea area;
+    area.OffsetX = qt_evr_makeMFOffset(x);
+    area.OffsetY = qt_evr_makeMFOffset(y);
+    area.Area.cx = width;
+    area.Area.cy = height;
+    return area;
+}
+
+inline HRESULT qt_evr_getFrameRate(IMFMediaType *pType, MFRatio *pRatio)
+{
+    return MFGetAttributeRatio(pType, MF_MT_FRAME_RATE,
+                               reinterpret_cast<UINT32*>(&pRatio->Numerator),
+                               reinterpret_cast<UINT32*>(&pRatio->Denominator));
+}
+
+QVideoFrameFormat::PixelFormat qt_evr_pixelFormatFromD3DFormat(DWORD format);
+D3DFORMAT qt_evr_D3DFormatFromPixelFormat(QVideoFrameFormat::PixelFormat format);
+
+struct NullHandleTraits
+{
+    using Type = HANDLE;
+    static Type invalidValue() { return nullptr; }
+    static bool close(Type handle) { return CloseHandle(handle) != 0; }
+};
+
+using EventHandle = QUniqueHandle<NullHandleTraits>;
+using ThreadHandle = QUniqueHandle<NullHandleTraits>;
+
+QT_END_NAMESPACE
+
+#endif // EVRHELPERS_H
+