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56 lines
2 KiB
C
56 lines
2 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(GMPDecoderModule_h_)
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#define GMPDecoderModule_h_
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#include "PlatformDecoderModule.h"
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#include "mozilla/Maybe.h"
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// The special NodeId we use when doing unencrypted decoding using the GMP's
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// decoder. This ensures that each GMP MediaDataDecoder we create doesn't
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// require spinning up a new process, but instead we run all instances of
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// GMP decoders in the one process, to reduce overhead.
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//
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// Note: GMP storage is isolated by NodeId, and non persistent for this
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// special NodeId, and the only way a GMP can communicate with the outside
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// world is through the EME GMP APIs, and we never run EME with this NodeID
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// (because NodeIds are random strings which can't contain the '-' character),
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// so there's no way a malicious GMP can harvest, store, and then report any
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// privacy sensitive data about what users are watching.
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#define SHARED_GMP_DECODING_NODE_ID NS_LITERAL_CSTRING("gmp-shared-decoding")
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namespace mozilla {
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class GMPDecoderModule : public PlatformDecoderModule {
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public:
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GMPDecoderModule();
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virtual ~GMPDecoderModule();
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// Decode thread.
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already_AddRefed<MediaDataDecoder>
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CreateVideoDecoder(const CreateDecoderParams& aParams) override;
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// Decode thread.
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already_AddRefed<MediaDataDecoder>
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CreateAudioDecoder(const CreateDecoderParams& aParams) override;
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ConversionRequired
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DecoderNeedsConversion(const TrackInfo& aConfig) const override;
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bool
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SupportsMimeType(const nsACString& aMimeType,
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DecoderDoctorDiagnostics* aDiagnostics) const override;
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static const Maybe<nsCString> PreferredGMP(const nsACString& aMimeType);
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static bool SupportsMimeType(const nsACString& aMimeType,
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const Maybe<nsCString>& aGMP);
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};
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} // namespace mozilla
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#endif // GMPDecoderModule_h_
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