зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.8 KiB
C++
62 строки
1.8 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MediaDataDecodedListener_h_
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#define MediaDataDecodedListener_h_
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#include "mozilla/Monitor.h"
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#include "MediaDecoderReader.h"
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namespace mozilla {
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class MediaDecoderStateMachine;
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class MediaData;
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// A RequestSampleCallback implementation that forwards samples onto the
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// MediaDecoderStateMachine via tasks that run on the supplied task queue.
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template<class Target>
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class MediaDataDecodedListener : public RequestSampleCallback {
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public:
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MediaDataDecodedListener(Target* aTarget,
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MediaTaskQueue* aTaskQueue)
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: mMonitor("MediaDataDecodedListener")
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, mTaskQueue(aTaskQueue)
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, mTarget(aTarget)
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{
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MOZ_ASSERT(aTarget);
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MOZ_ASSERT(aTaskQueue);
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}
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void BreakCycles() {
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MonitorAutoLock lock(mMonitor);
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mTarget = nullptr;
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mTaskQueue = nullptr;
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}
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virtual void OnSeekCompleted(nsresult aResult) MOZ_OVERRIDE {
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MonitorAutoLock lock(mMonitor);
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if (!mTarget || !mTaskQueue) {
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// We've been shutdown, abort.
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return;
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}
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RefPtr<nsIRunnable> task(NS_NewRunnableMethodWithArg<nsresult>(mTarget,
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&Target::OnSeekCompleted,
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aResult));
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if (NS_FAILED(mTaskQueue->Dispatch(task))) {
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NS_WARNING("Failed to dispatch OnSeekCompleted task");
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}
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}
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private:
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Monitor mMonitor;
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RefPtr<MediaTaskQueue> mTaskQueue;
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RefPtr<Target> mTarget;
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};
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} /* namespace mozilla */
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#endif // MediaDataDecodedListener_h_
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