1 files changed, 88 insertions, 0 deletions
diff --git a/dom/media/ipc/MFMediaEngineUtils.h b/dom/media/ipc/MFMediaEngineUtils.h
new file mode 100644
index 0000000000..5054fbb5c4
--- /dev/null
+++ b/dom/media/ipc/MFMediaEngineUtils.h
@@ -0,0 +1,88 @@
+/* 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 DOM_MEDIA_IPC_MFMEDIAENGINEUTILS_H_
+#define DOM_MEDIA_IPC_MFMEDIAENGINEUTILS_H_
+
+#include "MFMediaEngineExtra.h"
+#include "ipc/EnumSerializer.h"
+#include "mozilla/Logging.h"
+#include "mozilla/ProfilerMarkerTypes.h"
+
+namespace mozilla {
+
+inline LazyLogModule gMFMediaEngineLog{"MFMediaEngine"};
+
+// https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/ne-mfmediaengine-mf_media_engine_event
+using MFMediaEngineEvent = MF_MEDIA_ENGINE_EVENT;
+
+// https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/ne-mfmediaengine-mf_media_engine_err
+using MFMediaEngineError = MF_MEDIA_ENGINE_ERR;
+
+#define LOG_AND_WARNING(msg, ...)                                \
+  do {                                                           \
+    NS_WARNING(nsPrintfCString(msg, rv).get());                  \
+    MOZ_LOG(gMFMediaEngineLog, LogLevel::Debug,                  \
+            ("%s:%d, " msg, __FILE__, __LINE__, ##__VA_ARGS__)); \
+  } while (false)
+
+#ifndef RETURN_IF_FAILED
+#  define RETURN_IF_FAILED(x)                           \
+    do {                                                \
+      HRESULT rv = x;                                   \
+      if (MOZ_UNLIKELY(FAILED(rv))) {                   \
+        LOG_AND_WARNING("(" #x ") failed, rv=%lx", rv); \
+        return rv;                                      \
+      }                                                 \
+    } while (false)
+#endif
+
+#ifndef RETURN_VOID_IF_FAILED
+#  define RETURN_VOID_IF_FAILED(x)                      \
+    do {                                                \
+      HRESULT rv = x;                                   \
+      if (MOZ_UNLIKELY(FAILED(rv))) {                   \
+        LOG_AND_WARNING("(" #x ") failed, rv=%lx", rv); \
+        return;                                         \
+      }                                                 \
+    } while (false)
+#endif
+
+#define ENGINE_MARKER(markerName) \
+  PROFILER_MARKER(markerName, MEDIA_PLAYBACK, {}, MediaEngineMarker, Id())
+
+#define ENGINE_MARKER_TEXT(markerName, text)                                   \
+  PROFILER_MARKER(markerName, MEDIA_PLAYBACK, {}, MediaEngineTextMarker, Id(), \
+                  text)
+
+const char* MediaEventTypeToStr(MediaEventType aType);
+const char* MediaEngineEventToStr(MF_MEDIA_ENGINE_EVENT aEvent);
+const char* MFMediaEngineErrorToStr(MFMediaEngineError aError);
+const char* GUIDToStr(GUID aGUID);
+const char* MFVideoRotationFormatToStr(MFVideoRotationFormat aFormat);
+const char* MFVideoTransferFunctionToStr(MFVideoTransferFunction aFunc);
+const char* MFVideoPrimariesToStr(MFVideoPrimaries aPrimaries);
+
+}  // namespace mozilla
+
+namespace IPC {
+
+template <>
+struct ParamTraits<mozilla::MFMediaEngineError>
+    : public ContiguousEnumSerializerInclusive<
+          mozilla::MFMediaEngineError,
+          mozilla::MFMediaEngineError::MF_MEDIA_ENGINE_ERR_ABORTED,
+          mozilla::MFMediaEngineError::MF_MEDIA_ENGINE_ERR_ENCRYPTED> {};
+
+template <>
+struct ParamTraits<mozilla::MFMediaEngineEvent>
+    : public ContiguousEnumSerializerInclusive<
+          mozilla::MFMediaEngineEvent,
+          mozilla::MFMediaEngineEvent::MF_MEDIA_ENGINE_EVENT_LOADSTART,
+          mozilla::MFMediaEngineEvent::
+              MF_MEDIA_ENGINE_EVENT_AUDIOENDPOINTCHANGE> {};
+
+}  // namespace IPC
+
+#endif  // DOM_MEDIA_IPC_MFMEDIAENGINECHILD_H_