From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 dom/media/eme/EMEUtils.cpp | 97 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 dom/media/eme/EMEUtils.cpp

(limited to 'dom/media/eme/EMEUtils.cpp')

diff --git a/dom/media/eme/EMEUtils.cpp b/dom/media/eme/EMEUtils.cpp
new file mode 100644
index 000000000..c248b3a24
--- /dev/null
+++ b/dom/media/eme/EMEUtils.cpp
@@ -0,0 +1,97 @@
+/* -*- 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/. */
+
+#include "mozilla/EMEUtils.h"
+#include "mozilla/dom/UnionTypes.h"
+
+namespace mozilla {
+
+LogModule* GetEMELog() {
+  static LazyLogModule log("EME");
+  return log;
+}
+
+LogModule* GetEMEVerboseLog() {
+  static LazyLogModule log("EMEV");
+  return log;
+}
+
+ArrayData
+GetArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView)
+{
+  MOZ_ASSERT(aBufferOrView.IsArrayBuffer() || aBufferOrView.IsArrayBufferView());
+  if (aBufferOrView.IsArrayBuffer()) {
+    const dom::ArrayBuffer& buffer = aBufferOrView.GetAsArrayBuffer();
+    buffer.ComputeLengthAndData();
+    return ArrayData(buffer.Data(), buffer.Length());
+  } else if (aBufferOrView.IsArrayBufferView()) {
+    const dom::ArrayBufferView& bufferview = aBufferOrView.GetAsArrayBufferView();
+    bufferview.ComputeLengthAndData();
+    return ArrayData(bufferview.Data(), bufferview.Length());
+  }
+  return ArrayData(nullptr, 0);
+}
+
+void
+CopyArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView,
+                                     nsTArray<uint8_t>& aOutData)
+{
+  ArrayData data = GetArrayBufferViewOrArrayBufferData(aBufferOrView);
+  aOutData.Clear();
+  if (!data.IsValid()) {
+    return;
+  }
+  aOutData.AppendElements(data.mData, data.mLength);
+}
+
+bool
+IsClearkeyKeySystem(const nsAString& aKeySystem)
+{
+  return !CompareUTF8toUTF16(kEMEKeySystemClearkey, aKeySystem);
+}
+
+bool
+IsPrimetimeKeySystem(const nsAString& aKeySystem)
+{
+  return !CompareUTF8toUTF16(kEMEKeySystemPrimetime, aKeySystem);
+}
+
+bool
+IsWidevineKeySystem(const nsAString& aKeySystem)
+{
+  return !CompareUTF8toUTF16(kEMEKeySystemWidevine, aKeySystem);
+}
+
+nsString
+KeySystemToGMPName(const nsAString& aKeySystem)
+{
+  if (IsPrimetimeKeySystem(aKeySystem)) {
+    return NS_LITERAL_STRING("gmp-eme-adobe");
+  }
+  if (IsClearkeyKeySystem(aKeySystem)) {
+    return NS_LITERAL_STRING("gmp-clearkey");
+  }
+  if (IsWidevineKeySystem(aKeySystem)) {
+    return NS_LITERAL_STRING("gmp-widevinecdm");
+  }
+  MOZ_ASSERT(false, "We should only call this for known GMPs");
+  return EmptyString();
+}
+
+CDMType
+ToCDMTypeTelemetryEnum(const nsString& aKeySystem)
+{
+  if (IsWidevineKeySystem(aKeySystem)) {
+    return CDMType::eWidevine;
+  } else if (IsClearkeyKeySystem(aKeySystem)) {
+    return CDMType::eClearKey;
+  } else if (IsPrimetimeKeySystem(aKeySystem)) {
+    return CDMType::ePrimetime;
+  }
+  return CDMType::eUnknown;
+}
+
+} // namespace mozilla
-- 
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