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-rw-r--r--dom/media/systemservices/MediaSystemResourceService.h89
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diff --git a/dom/media/systemservices/MediaSystemResourceService.h b/dom/media/systemservices/MediaSystemResourceService.h
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+++ b/dom/media/systemservices/MediaSystemResourceService.h
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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