import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/platforms/wmf/WMFUtils.h

@@ -0,0 +1,67 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef WMFUtils_h
+#define WMFUtils_h
+
+#include "WMF.h"
+#include "nsString.h"
+#include "nsRect.h"
+#include "TimeUnits.h"
+#include "VideoUtils.h"
+
+// Various utilities shared by WMF backend files.
+
+namespace mozilla {
+
+// Converts from microseconds to hundreds of nanoseconds.
+// We use microseconds for our timestamps, whereas WMF uses
+// hundreds of nanoseconds.
+inline int64_t
+UsecsToHNs(int64_t aUsecs) {
+  return aUsecs * 10;
+}
+
+// Converts from hundreds of nanoseconds to microseconds.
+// We use microseconds for our timestamps, whereas WMF uses
+// hundreds of nanoseconds.
+inline int64_t
+HNsToUsecs(int64_t hNanoSecs) {
+  return hNanoSecs / 10;
+}
+
+HRESULT
+HNsToFrames(int64_t aHNs, uint32_t aRate, int64_t* aOutFrames);
+
+HRESULT
+GetDefaultStride(IMFMediaType *aType, uint32_t aWidth, uint32_t* aOutStride);
+
+int32_t
+MFOffsetToInt32(const MFOffset& aOffset);
+
+// Gets the sub-region of the video frame that should be displayed.
+// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb530115(v=vs.85).aspx
+HRESULT
+GetPictureRegion(IMFMediaType* aMediaType, nsIntRect& aOutPictureRegion);
+
+// Returns the duration of a IMFSample in TimeUnit.
+// Returns media::TimeUnit::Invalid() on failure.
+media::TimeUnit
+GetSampleDuration(IMFSample* aSample);
+
+// Returns the presentation time of a IMFSample in TimeUnit.
+// Returns media::TimeUnit::Invalid() on failure.
+media::TimeUnit
+GetSampleTime(IMFSample* aSample);
+
+inline bool
+IsFlagSet(DWORD flags, DWORD pattern) {
+  return (flags & pattern) == pattern;
+}
+
+} // namespace mozilla
+
+#endif