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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#if !defined(MediaSystemResourceService_h_)
# define MediaSystemResourceService_h_
# include <deque>
# include "MediaSystemResourceTypes.h"
# include "mozilla/StaticPtr.h"
# include "nsClassHashtable.h"
namespace mozilla {
namespace media {
class MediaSystemResourceManagerParent;
} // namespace media
/**
* Manage media system resource allocation requests within system.
*/
class MediaSystemResourceService {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaSystemResourceService)
static MediaSystemResourceService* Get();
static void Init();
static void Shutdown();
void Acquire(media::MediaSystemResourceManagerParent* aParent, uint32_t aId,
MediaSystemResourceType aResourceType, bool aWillWait);
void ReleaseResource(media::MediaSystemResourceManagerParent* aParent,
uint32_t aId, MediaSystemResourceType aResourceType);
void ReleaseResource(media::MediaSystemResourceManagerParent* aParent);
private:
MediaSystemResourceService();
~MediaSystemResourceService();
struct MediaSystemResourceRequest {
MediaSystemResourceRequest() : mParent(nullptr), mId(-1) {}
MediaSystemResourceRequest(media::MediaSystemResourceManagerParent* aParent,
uint32_t aId)
: mParent(aParent), mId(aId) {}
media::MediaSystemResourceManagerParent* mParent;
uint32_t mId;
};
struct MediaSystemResource {
MediaSystemResource() : mResourceCount(0) {}
explicit MediaSystemResource(uint32_t aResourceCount)
: mResourceCount(aResourceCount) {}
std::deque<MediaSystemResourceRequest> mWaitingRequests;
std::deque<MediaSystemResourceRequest> mAcquiredRequests;
uint32_t mResourceCount;
};
void Destroy();
void RemoveRequest(media::MediaSystemResourceManagerParent* aParent,
uint32_t aId, MediaSystemResourceType aResourceType);
void RemoveRequests(media::MediaSystemResourceManagerParent* aParent,
MediaSystemResourceType aResourceType);
void UpdateRequests(MediaSystemResourceType aResourceType);
bool mDestroyed;
nsClassHashtable<nsUint32HashKey, MediaSystemResource> mResources;
static StaticRefPtr<MediaSystemResourceService> sSingleton;
};
} // namespace mozilla
#endif