media: add ResourceManagerService

Bug: 19620911
Change-Id: Iea173d310d31781bc50effe3d9bd6553cb5139eb
diff --git a/services/mediaresourcemanager/ResourceManagerService.h b/services/mediaresourcemanager/ResourceManagerService.h
new file mode 100644
index 0000000..2ed9bf8
--- /dev/null
+++ b/services/mediaresourcemanager/ResourceManagerService.h
@@ -0,0 +1,106 @@
+/*
+**
+** Copyright 2015, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#ifndef ANDROID_RESOURCEMANAGERSERVICE_H
+#define ANDROID_RESOURCEMANAGERSERVICE_H
+
+#include <arpa/inet.h>
+#include <binder/BinderService.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/threads.h>
+#include <utils/Vector.h>
+
+#include <media/IResourceManagerService.h>
+
+namespace android {
+
+struct ProcessInfoInterface;
+
+struct ResourceInfo {
+    int64_t clientId;
+    sp<IResourceManagerClient> client;
+    Vector<MediaResource> resources;
+};
+
+typedef Vector<ResourceInfo> ResourceInfos;
+typedef KeyedVector<int, ResourceInfos> PidResourceInfosMap;
+
+class ResourceManagerService
+    : public BinderService<ResourceManagerService>,
+      public BnResourceManagerService
+{
+public:
+    static char const *getServiceName() { return "media.resource_manager"; }
+
+    ResourceManagerService();
+    ResourceManagerService(sp<ProcessInfoInterface> processInfo);
+
+    // IResourceManagerService interface
+    virtual void config(const Vector<MediaResourcePolicy> &policies);
+
+    virtual void addResource(
+            int pid,
+            int64_t clientId,
+            const sp<IResourceManagerClient> client,
+            const Vector<MediaResource> &resources);
+
+    virtual void removeResource(int64_t clientId);
+
+    virtual bool reclaimResource(int callingPid, const Vector<MediaResource> &resources);
+
+protected:
+    virtual ~ResourceManagerService();
+
+private:
+    friend class ResourceManagerServiceTest;
+
+    // Gets the list of all the clients who own the specified resource type.
+    // Returns false if any client belongs to a process with higher priority than the
+    // calling process. The clients will remain unchanged if returns false.
+    bool getAllClients_l(int callingPid, const String8 &type,
+            Vector<sp<IResourceManagerClient>> *clients);
+
+    // Gets the client who owns specified resource type from lowest possible priority process.
+    // Returns false if the calling process priority is not higher than the lowest process
+    // priority. The client will remain unchanged if returns false.
+    bool getLowestPriorityBiggestClient_l(int callingPid, const String8 &type,
+            sp<IResourceManagerClient> *client);
+
+    // Gets lowest priority process that has the specified resource type.
+    // Returns false if failed. The output parameters will remain unchanged if failed.
+    bool getLowestPriorityPid_l(const String8 &type, int *pid, int *priority);
+
+    // Gets the client who owns biggest piece of specified resource type from pid.
+    // Returns false if failed. The client will remain unchanged if failed.
+    bool getBiggestClient_l(int pid, const String8 &type, sp<IResourceManagerClient> *client);
+
+    bool isCallingPriorityHigher_l(int callingPid, int pid);
+
+    mutable Mutex mLock;
+    sp<ProcessInfoInterface> mProcessInfo;
+    PidResourceInfosMap mMap;
+    bool mSupportsMultipleSecureCodecs;
+    bool mSupportsSecureWithNonSecureCodec;
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_RESOURCEMANAGERSERVICE_H