зеркало из https://github.com/mozilla/gecko-dev.git
108 строки
3.4 KiB
C++
108 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef EME_LOG_H_
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#define EME_LOG_H_
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#include "mozilla/Logging.h"
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#include "nsString.h"
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#include "nsTArray.h"
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namespace mozilla {
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namespace dom {
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class ArrayBufferViewOrArrayBuffer;
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}
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#ifndef EME_LOG
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LogModule* GetEMELog();
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#define EME_LOG(...) MOZ_LOG(GetEMELog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
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#define EME_LOG_ENABLED() MOZ_LOG_TEST(GetEMELog(), mozilla::LogLevel::Debug)
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#endif
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#ifndef EME_VERBOSE_LOG
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LogModule* GetEMEVerboseLog();
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#define EME_VERBOSE_LOG(...) MOZ_LOG(GetEMEVerboseLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))
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#else
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#ifndef EME_LOG
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#define EME_LOG(...)
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#endif
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#ifndef EME_VERBOSE_LOG
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#define EME_VERBOSE_LOG(...)
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#endif
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#endif
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#define NO_CDM_VERSION -1
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// Checks a keySystem string against a whitelist, and determines whether
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// the keySystem is in the whitelist, and extracts the requested minimum
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// CDM version.
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//
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// Format of EME keysystems:
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// com.domain.keysystem[.minVersionAsInt]
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// i.e. org.w3.clearkey, com.adobe.primetime.7
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//
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// Returns true if aKeySystem contains a valid keySystem which we support,
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// false otherwise.
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//
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// On success, aOutKeySystem contains the keySystem string stripped of the
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// min version number, and aOutMinCDMVersion contains the min version number
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// if present. If it was not present, aOutMinCDMVersion is NO_CDM_VERSION.
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bool ParseKeySystem(const nsAString& aKeySystem,
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nsAString& aOutKeySystem,
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int32_t& aOutMinCDMVersion);
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// Helper function to extract a copy of data coming in from JS in an
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// (ArrayBuffer or ArrayBufferView) IDL typed function argument.
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//
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// Only call this on a properly initialized ArrayBufferViewOrArrayBuffer.
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void
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CopyArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView,
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nsTArray<uint8_t>& aOutData);
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struct ArrayData {
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explicit ArrayData(const uint8_t* aData, size_t aLength)
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: mData(aData)
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, mLength(aLength)
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{
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}
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const uint8_t* mData;
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const size_t mLength;
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bool IsValid() const {
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return mData != nullptr && mLength != 0;
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}
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bool operator== (const nsTArray<uint8_t>& aOther) const {
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return mLength == aOther.Length() &&
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memcmp(mData, aOther.Elements(), mLength) == 0;
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}
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};
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// Helper function to extract data coming in from JS in an
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// (ArrayBuffer or ArrayBufferView) IDL typed function argument.
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//
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// Be *very* careful with this!
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//
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// Only use returned ArrayData inside the lifetime of the
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// ArrayBufferViewOrArrayBuffer; the ArrayData struct does not contain
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// a copy of the data!
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//
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// And do *not* call out to anything that could call into JavaScript,
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// while the ArrayData is live, as then all bets about the data not changing
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// are off! No calls into JS, no calls into JS-implemented WebIDL or XPIDL,
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// nothing. Beware!
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//
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// Only call this on a properly initialized ArrayBufferViewOrArrayBuffer.
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ArrayData
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GetArrayBufferViewOrArrayBufferData(const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView);
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nsString
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KeySystemToGMPName(const nsAString& aKeySystem);
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} // namespace mozilla
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#endif // EME_LOG_H_
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