1 files changed, 104 insertions, 0 deletions
diff --git a/dom/media/platforms/wmf/WMFUtils.h b/dom/media/platforms/wmf/WMFUtils.h
new file mode 100644
index 0000000000..316c3dd78c
--- /dev/null
+++ b/dom/media/platforms/wmf/WMFUtils.h
@@ -0,0 +1,104 @@
+/* -*- 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 "ImageTypes.h"
+#include "TimeUnits.h"
+#include "VideoUtils.h"
+#include "WMF.h"
+#include "mozilla/gfx/Rect.h"
+#include "nsString.h"
+
+// Various utilities shared by WMF backend files.
+
+namespace mozilla {
+
+static const GUID CLSID_MSOpusDecoder = {
+    0x63e17c10,
+    0x2d43,
+    0x4c42,
+    {0x8f, 0xe3, 0x8d, 0x8b, 0x63, 0xe4, 0x6a, 0x6a}};
+
+// Media types supported by Media Foundation.
+enum class WMFStreamType {
+  Unknown,
+  H264,
+  VP8,
+  VP9,
+  AV1,
+  MP3,
+  AAC,
+  OPUS,
+  VORBIS,
+  SENTINEL
+};
+
+bool StreamTypeIsVideo(const WMFStreamType& aType);
+
+bool StreamTypeIsAudio(const WMFStreamType& aType);
+
+// Get a string representation of the stream type. Useful for logging.
+const char* StreamTypeToString(WMFStreamType aStreamType);
+
+WMFStreamType GetStreamTypeFromMimeType(const nsCString& aMimeType);
+
+// 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);
+
+Maybe<gfx::YUVColorSpace> GetYUVColorSpace(IMFMediaType* aType);
+
+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, gfx::IntRect& 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;
+}
+
+// Will return %ProgramW6432% value as per:
+// https://msdn.microsoft.com/library/windows/desktop/aa384274.aspx
+nsString GetProgramW6432Path();
+
+const char* MFTMessageTypeToStr(MFT_MESSAGE_TYPE aMsg);
+
+GUID AudioMimeTypeToMediaFoundationSubtype(const nsACString& aMimeType);
+
+GUID VideoMimeTypeToMediaFoundationSubtype(const nsACString& aMimeType);
+
+void AACAudioSpecificConfigToUserData(uint8_t aAACProfileLevelIndication,
+                                      const uint8_t* aAudioSpecConfig,
+                                      uint32_t aConfigLength,
+                                      nsTArray<BYTE>& aOutUserData);
+
+}  // namespace mozilla
+
+#endif