зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
2.0 KiB
C++
62 строки
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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(MP4Decoder_h_)
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#define MP4Decoder_h_
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#include "ChannelMediaDecoder.h"
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#include "MediaFormatReader.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/layers/KnowsCompositor.h"
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namespace mozilla {
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class MediaContainerType;
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// Decoder that uses a bundled MP4 demuxer and platform decoders to play MP4.
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class MP4Decoder : public ChannelMediaDecoder
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{
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public:
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explicit MP4Decoder(MediaDecoderInit& aInit);
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ChannelMediaDecoder* Clone(MediaDecoderInit& aInit) override
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{
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if (!IsEnabled()) {
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return nullptr;
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}
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return new MP4Decoder(aInit);
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}
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MediaDecoderStateMachine* CreateStateMachine() override;
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// Returns true if aContainerType is an MP4 type that we think we can render
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// with the a platform decoder backend.
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// If provided, codecs are checked for support.
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static bool IsSupportedType(const MediaContainerType& aContainerType,
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DecoderDoctorDiagnostics* aDiagnostics);
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// Return true if aMimeType is a one of the strings used by our demuxers to
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// identify H264. Does not parse general content type strings, i.e. white
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// space matters.
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static bool IsH264(const nsACString& aMimeType);
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// Return true if aMimeType is a one of the strings used by our demuxers to
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// identify AAC. Does not parse general content type strings, i.e. white
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// space matters.
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static bool IsAAC(const nsACString& aMimeType);
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// Returns true if the MP4 backend is preffed on.
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static bool IsEnabled();
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static already_AddRefed<dom::Promise>
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IsVideoAccelerated(layers::KnowsCompositor* aKnowsCompositor, nsIGlobalObject* aParent);
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void GetMozDebugReaderData(nsACString& aString) override;
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};
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} // namespace mozilla
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#endif
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