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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 */
#ifndef EME_LOG_H_
#define EME_LOG_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)
LogModule* GetEMEVerboseLog();
# define EME_VERBOSE_LOG(...) \
MOZ_LOG(GetEMEVerboseLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
# ifndef EME_LOG
# define EME_LOG(...)
# endif
# define EME_VERBOSE_LOG(...)
# 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 IsWidevineKeySystem(const nsAString& aKeySystem);
// 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);
} // namespace mozilla
#endif // EME_LOG_H_