mirror of
https://github.com/classilla/tenfourfox.git
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90 lines
2.6 KiB
C++
90 lines
2.6 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(MediaSystemResourceService_h_)
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#define MediaSystemResourceService_h_
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#include <deque>
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#include "MediaSystemResourceTypes.h"
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#include "mozilla/StaticPtr.h"
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#include "nsClassHashtable.h"
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namespace mozilla {
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namespace media {
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class MediaSystemResourceManagerParent;
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} // namespace media
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/**
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* Manage media system resource allocation requests within system.
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*/
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class MediaSystemResourceService
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{
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaSystemResourceService)
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static MediaSystemResourceService* Get();
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static void Init();
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static void Shutdown();
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void Acquire(media::MediaSystemResourceManagerParent* aParent,
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uint32_t aId,
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MediaSystemResourceType aResourceType,
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bool aWillWait);
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void ReleaseResource(media::MediaSystemResourceManagerParent* aParent,
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uint32_t aId,
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MediaSystemResourceType aResourceType);
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void ReleaseResource(media::MediaSystemResourceManagerParent* aParent);
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private:
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MediaSystemResourceService();
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~MediaSystemResourceService();
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struct MediaSystemResourceRequest {
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MediaSystemResourceRequest()
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: mParent(nullptr), mId(-1) {}
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MediaSystemResourceRequest(media::MediaSystemResourceManagerParent* aParent, uint32_t aId)
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: mParent(aParent), mId(aId) {}
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media::MediaSystemResourceManagerParent* mParent;
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uint32_t mId;
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};
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struct MediaSystemResource {
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MediaSystemResource()
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: mResourceCount(0) {}
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explicit MediaSystemResource(uint32_t aResourceCount)
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: mResourceCount(aResourceCount) {}
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std::deque<MediaSystemResourceRequest> mWaitingRequests;
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std::deque<MediaSystemResourceRequest> mAcquiredRequests;
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uint32_t mResourceCount;
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};
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void Destroy();
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void RemoveRequest(media::MediaSystemResourceManagerParent* aParent,
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uint32_t aId,
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MediaSystemResourceType aResourceType);
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void RemoveRequests(media::MediaSystemResourceManagerParent* aParent,
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MediaSystemResourceType aResourceType);
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void UpdateRequests(MediaSystemResourceType aResourceType);
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bool mDestroyed;
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nsClassHashtable<nsUint32HashKey, MediaSystemResource> mResources;
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static StaticRefPtr<MediaSystemResourceService> sSingleton;
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};
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} // namespace mozilla
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#endif
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