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Copy pathInitDataRegistry.h
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85 lines (69 loc) · 3.45 KB
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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(ENCRYPTED_MEDIA)
#include <WebCore/CDMTypesForward.h>
#include <wtf/Function.h>
#include <wtf/Ref.h>
#include <wtf/RefPtr.h>
#include <wtf/RobinHoodHashMap.h>
#include <wtf/Vector.h>
namespace WebCore {
class ISOProtectionSystemSpecificHeaderBox;
class SharedBuffer;
class InitDataRegistry {
public:
WEBCORE_EXPORT static InitDataRegistry& singleton();
friend class NeverDestroyed<InitDataRegistry>;
RefPtr<SharedBuffer> sanitizeInitData(const String& initDataType, const SharedBuffer&);
WEBCORE_EXPORT std::optional<CDMKeyIDs> extractKeyIDs(const String& initDataType, const SharedBuffer&);
struct InitDataTypeCallbacks {
using SanitizeInitDataCallback = Function<RefPtr<SharedBuffer>(const SharedBuffer&)>;
using ExtractKeyIDsCallback = Function<std::optional<CDMKeyIDs>(const SharedBuffer&)>;
SanitizeInitDataCallback sanitizeInitData;
ExtractKeyIDsCallback extractKeyIDs;
};
void registerInitDataType(const String& initDataType, InitDataTypeCallbacks&&);
static const String& cencName();
static const String& keyidsName();
static const String& webmName();
static std::optional<Vector<std::unique_ptr<ISOProtectionSystemSpecificHeaderBox>>> extractPsshBoxesFromCenc(const SharedBuffer&);
static std::optional<CDMKeyIDs> extractKeyIDsCenc(const SharedBuffer&);
static RefPtr<SharedBuffer> sanitizeCenc(const SharedBuffer&);
#if HAVE(FAIRPLAYSTREAMING_CENC_INITDATA)
// Walks the PSSH atoms in a cenc init data buffer and returns the bytes of the first
// PSSH whose SystemID matches FairPlay's, or std::nullopt if none is present.
// AVFoundation's PSSH parser only inspects the first PSSH atom in the supplied data
// and rejects the entire blob if its SystemID isn't FairPlay's, so callers must
// filter to a FairPlay-only buffer before forwarding to AVContentKeySession.
static RefPtr<SharedBuffer> extractFairPlayPsshFromCenc(const SharedBuffer&);
#endif
private:
InitDataRegistry();
~InitDataRegistry();
MemoryCompactRobinHoodHashMap<String, InitDataTypeCallbacks> m_types;
};
}
#endif // ENABLE(ENCRYPTED_MEDIA)