1 files changed, 109 insertions, 0 deletions
diff --git a/dom/media/eme/EMEUtils.h b/dom/media/eme/EMEUtils.h
new file mode 100644
index 0000000000..ca5c684a9f
--- /dev/null
+++ b/dom/media/eme/EMEUtils.h
@@ -0,0 +1,109 @@
+/* -*- 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 "mozilla/Logging.h"
+#include "mozilla/dom/MediaKeyStatusMapBinding.h"
+#include "mozilla/dom/MediaKeySystemAccessBinding.h"
+#include "nsString.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+enum class CryptoScheme : uint8_t;
+#ifdef MOZ_WMF_CDM
+class MFCDMCapabilitiesIPDL;
+#endif
+struct KeySystemConfig;
+
+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);
+
+nsString KeySystemToProxyName(const nsAString& aKeySystem);
+
+bool IsClearkeyKeySystem(const nsAString& aKeySystem);
+
+bool IsWidevineKeySystem(const nsAString& aKeySystem);
+
+#ifdef MOZ_WMF_CDM
+bool IsPlayReadyKeySystemAndSupported(const nsAString& aKeySystem);
+
+bool IsPlayReadyKeySystem(const nsAString& aKeySystem);
+
+bool IsWidevineExperimentKeySystemAndSupported(const nsAString& aKeySystem);
+
+bool IsWidevineExperimentKeySystem(const nsAString& aKeySystem);
+
+bool IsWMFClearKeySystemAndSupported(const nsAString& aKeySystem);
+#endif
+
+// Note: Primetime is now unsupported, but we leave it in the enum so
+// that the telemetry enum values are not changed; doing so would break
+// existing telemetry probes.
+enum CDMType {
+  eClearKey = 0,
+  ePrimetime = 1,  // Note: Unsupported.
+  eWidevine = 2,
+  eUnknown = 3
+};
+
+CDMType ToCDMTypeTelemetryEnum(const nsString& aKeySystem);
+
+const char* ToMediaKeyStatusStr(dom::MediaKeyStatus aStatus);
+
+// Return true if given config supports hardware decryption (SL3000 or L1).
+bool IsHardwareDecryptionSupported(
+    const dom::MediaKeySystemConfiguration& aConfig);
+
+const char* EncryptionSchemeStr(const CryptoScheme& aScheme);
+
+#ifdef MOZ_WMF_CDM
+void MFCDMCapabilitiesIPDLToKeySystemConfig(
+    const MFCDMCapabilitiesIPDL& aCDMConfig, KeySystemConfig& aKeySystemConfig);
+#endif
+
+bool DoesKeySystemSupportClearLead(const nsAString& aKeySystem);
+
+// Return true if there is any config in the given configs has hardware DRM
+// associated robustness.
+bool CheckIfHarewareDRMConfigExists(
+    const nsTArray<dom::MediaKeySystemConfiguration>& aConfigs);
+
+}  // namespace mozilla
+
+#endif  // EME_LOG_H_