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-rw-r--r--dom/media/ipc/MFMediaEngineUtils.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/dom/media/ipc/MFMediaEngineUtils.h b/dom/media/ipc/MFMediaEngineUtils.h
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+++ b/dom/media/ipc/MFMediaEngineUtils.h
@@ -0,0 +1,163 @@
+/* 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
+
+#ifndef RETURN_PARAM_IF_FAILED
+# define RETURN_PARAM_IF_FAILED(x, defaultOut) \
+ do { \
+ HRESULT rv = x; \
+ if (MOZ_UNLIKELY(FAILED(rv))) { \
+ LOG_AND_WARNING("(" #x ") failed, rv=%lx", rv); \
+ return defaultOut; \
+ } \
+ } 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);
+void ByteArrayFromGUID(REFGUID aGuidIn, nsTArray<uint8_t>& aByteArrayOut);
+void GUIDFromByteArray(const nsTArray<uint8_t>& aByteArrayIn, GUID& aGuidOut);
+
+// See cdm::SubsampleEntry
+struct MediaFoundationSubsampleEntry {
+ uint32_t mClearBytes;
+ uint32_t mCipherBytes;
+};
+
+template <typename T>
+class ScopedCoMem {
+ public:
+ ScopedCoMem() : mPtr(nullptr) {}
+
+ ~ScopedCoMem() { Reset(nullptr); }
+
+ ScopedCoMem(const ScopedCoMem&) = delete;
+ ScopedCoMem& operator=(const ScopedCoMem&) = delete;
+
+ T** operator&() { // NOLINT
+ MOZ_ASSERT(mPtr == nullptr); // To catch memory leaks.
+ return &mPtr;
+ }
+
+ operator T*() { return mPtr; }
+
+ T* operator->() {
+ MOZ_ASSERT(mPtr != nullptr);
+ return mPtr;
+ }
+
+ const T* operator->() const {
+ MOZ_ASSERT(mPtr != nullptr);
+ return mPtr;
+ }
+
+ explicit operator bool() const { return mPtr; }
+
+ friend bool operator==(const ScopedCoMem& lhs, std::nullptr_t) {
+ return lhs.Get() == nullptr;
+ }
+
+ friend bool operator==(std::nullptr_t, const ScopedCoMem& rhs) {
+ return rhs.Get() == nullptr;
+ }
+
+ friend bool operator!=(const ScopedCoMem& lhs, std::nullptr_t) {
+ return lhs.Get() != nullptr;
+ }
+
+ friend bool operator!=(std::nullptr_t, const ScopedCoMem& rhs) {
+ return rhs.Get() != nullptr;
+ }
+
+ void Reset(T* ptr) {
+ if (mPtr) CoTaskMemFree(mPtr);
+ mPtr = ptr;
+ }
+
+ T* Get() const { return mPtr; }
+
+ private:
+ T* mPtr;
+};
+
+} // 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_