62 lines
1.8 KiB
C++
62 lines
1.8 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(OggDecoder_h_)
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#define OggDecoder_h_
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#include "MediaDecoder.h"
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namespace mozilla {
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class OggDecoder : public MediaDecoder
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{
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public:
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explicit OggDecoder(MediaDecoderOwner* aOwner)
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: MediaDecoder(aOwner)
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, mShutdownBitMonitor("mShutdownBitMonitor")
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, mShutdownBit(false)
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{}
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MediaDecoder* Clone(MediaDecoderOwner* aOwner) override {
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if (!IsOggEnabled()) {
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return nullptr;
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}
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return new OggDecoder(aOwner);
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}
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MediaDecoderStateMachine* CreateStateMachine() override;
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// For yucky legacy reasons, the ogg decoder needs to do a cross-thread read
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// to check for shutdown while it hogs its own task queue. We don't want to
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// protect the general state with a lock, so we make a special copy and a
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// special-purpose lock. This method may be called on any thread.
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bool IsOggDecoderShutdown() override
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{
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MonitorAutoLock lock(mShutdownBitMonitor);
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return mShutdownBit;
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}
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// Returns true if aMIMEType is a type that we think we can render with the
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// a platform decoder backend. If aCodecs is non emtpy, it is filled
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// with a comma-delimited list of codecs to check support for.
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static bool CanHandleMediaType(const nsACString& aMIMETypeExcludingCodecs,
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const nsAString& aCodecs);
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static bool IsEnabled();
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protected:
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void ShutdownBitChanged() override
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{
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MonitorAutoLock lock(mShutdownBitMonitor);
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mShutdownBit = mStateMachineIsShutdown;
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}
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Monitor mShutdownBitMonitor;
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bool mShutdownBit;
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};
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} // namespace mozilla
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#endif
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