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-rw-r--r--dom/media/eme/EMEUtils.h107
1 files changed, 107 insertions, 0 deletions
diff --git a/dom/media/eme/EMEUtils.h b/dom/media/eme/EMEUtils.h
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+++ b/dom/media/eme/EMEUtils.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 EME_LOG_H_
+#define EME_LOG_H_
+
+#include "VideoUtils.h"
+#include "mozilla/Logging.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+namespace dom {
+class ArrayBufferViewOrArrayBuffer;
+}
+
+#ifndef EME_LOG
+ LogModule* GetEMELog();
+ #define EME_LOG(...) MOZ_LOG(GetEMELog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
+ #define EME_LOG_ENABLED() MOZ_LOG_TEST(GetEMELog(), mozilla::LogLevel::Debug)
+#endif
+
+#ifndef EME_VERBOSE_LOG
+ LogModule* GetEMEVerboseLog();
+ #define EME_VERBOSE_LOG(...) MOZ_LOG(GetEMEVerboseLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
+#else
+ #ifndef EME_LOG
+ #define EME_LOG(...)
+ #endif
+
+ #ifndef EME_VERBOSE_LOG
+ #define EME_VERBOSE_LOG(...)
+ #endif
+#endif
+
+// Helper function to extract a copy of data coming in from JS in an
+// (ArrayBuffer or ArrayBufferView) IDL typed function argument.
+//
+// Only call this on a properly initialized ArrayBufferViewOrArrayBuffer.
+void
+CopyArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView,
+ nsTArray<uint8_t>& aOutData);
+
+struct ArrayData {
+ explicit ArrayData(const uint8_t* aData, size_t aLength)
+ : mData(aData)
+ , mLength(aLength)
+ {
+ }
+ const uint8_t* mData;
+ const size_t mLength;
+ bool IsValid() const {
+ return mData != nullptr && mLength != 0;
+ }
+ bool operator== (const nsTArray<uint8_t>& aOther) const {
+ return mLength == aOther.Length() &&
+ memcmp(mData, aOther.Elements(), mLength) == 0;
+ }
+};
+
+// Helper function to extract data coming in from JS in an
+// (ArrayBuffer or ArrayBufferView) IDL typed function argument.
+//
+// Be *very* careful with this!
+//
+// Only use returned ArrayData inside the lifetime of the
+// ArrayBufferViewOrArrayBuffer; the ArrayData struct does not contain
+// a copy of the data!
+//
+// And do *not* call out to anything that could call into JavaScript,
+// while the ArrayData is live, as then all bets about the data not changing
+// are off! No calls into JS, no calls into JS-implemented WebIDL or XPIDL,
+// nothing. Beware!
+//
+// Only call this on a properly initialized ArrayBufferViewOrArrayBuffer.
+ArrayData
+GetArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView);
+
+nsString
+KeySystemToGMPName(const nsAString& aKeySystem);
+
+bool
+IsClearkeyKeySystem(const nsAString& aKeySystem);
+
+bool
+IsPrimetimeKeySystem(const nsAString& aKeySystem);
+
+bool
+IsWidevineKeySystem(const nsAString& aKeySystem);
+
+enum CDMType {
+ eClearKey = 0,
+ ePrimetime = 1,
+ eWidevine = 2,
+ eUnknown = 3
+};
+
+CDMType
+ToCDMTypeTelemetryEnum(const nsString& aKeySystem);
+
+} // namespace mozilla
+
+#endif // EME_LOG_H_