media: add ResourceManagerService

Bug: 19620911
Change-Id: Iea173d310d31781bc50effe3d9bd6553cb5139eb

1 files changed, 169 insertions, 0 deletions

diff --git a/media/libmedia/IResourceManagerService.cpp b/media/libmedia/IResourceManagerService.cpp
new file mode 100644
index 0000000..95a2d1c
--- /dev/null
+++ b/media/libmedia/IResourceManagerService.cpp
@@ -0,0 +1,169 @@
+/*
+**
+** 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.
+*/
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "IResourceManagerService"
+#include <utils/Log.h>
+
+#include "media/IResourceManagerService.h"
+
+#include <binder/Parcel.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+
+namespace android {
+
+enum {
+    CONFIG = IBinder::FIRST_CALL_TRANSACTION,
+    ADD_RESOURCE,
+    REMOVE_RESOURCE,
+    RECLAIM_RESOURCE,
+};
+
+template <typename T>
+static void writeToParcel(Parcel *data, const Vector<T> &items) {
+    size_t size = items.size();
+    size_t sizePosition = data->dataPosition();
+    // truncates size, but should be okay for this usecase
+    data->writeUint32(static_cast<uint32_t>(size));
+    for (size_t i = 0; i < size; i++) {
+        size_t position = data->dataPosition();
+        items[i].writeToParcel(data);
+    }
+}
+
+template <typename T>
+static void readFromParcel(const Parcel &data, Vector<T> *items) {
+    size_t size = (size_t)data.readUint32();
+    for (size_t i = 0; i < size; i++) {
+        T item;
+        item.readFromParcel(data);
+        items->add(item);
+    }
+}
+
+class BpResourceManagerService : public BpInterface<IResourceManagerService>
+{
+public:
+    BpResourceManagerService(const sp<IBinder> &impl)
+        : BpInterface<IResourceManagerService>(impl)
+    {
+    }
+
+    virtual void config(const Vector<MediaResourcePolicy> &policies) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
+        writeToParcel(&data, policies);
+        remote()->transact(CONFIG, data, &reply);
+    }
+
+    virtual void addResource(
+            int pid,
+            int64_t clientId,
+            const sp<IResourceManagerClient> client,
+            const Vector<MediaResource> &resources) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
+        data.writeInt32(pid);
+        data.writeInt64(clientId);
+        data.writeStrongBinder(IInterface::asBinder(client));
+        writeToParcel(&data, resources);
+
+        remote()->transact(ADD_RESOURCE, data, &reply);
+    }
+
+    virtual void removeResource(int64_t clientId) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
+        data.writeInt64(clientId);
+
+        remote()->transact(REMOVE_RESOURCE, data, &reply);
+    }
+
+    virtual bool reclaimResource(int callingPid, const Vector<MediaResource> &resources) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
+        data.writeInt32(callingPid);
+        writeToParcel(&data, resources);
+
+        bool ret = false;
+        status_t status = remote()->transact(RECLAIM_RESOURCE, data, &reply);
+        if (status == NO_ERROR) {
+            ret = (bool)reply.readInt32();
+        }
+        return ret;
+    }
+};
+
+IMPLEMENT_META_INTERFACE(ResourceManagerService, "android.media.IResourceManagerService");
+
+// ----------------------------------------------------------------------
+
+
+status_t BnResourceManagerService::onTransact(
+    uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags)
+{
+    switch (code) {
+        case CONFIG: {
+            CHECK_INTERFACE(IResourceManagerService, data, reply);
+            int pid = data.readInt32();
+            sp<IResourceManagerClient> client(
+                    interface_cast<IResourceManagerClient>(data.readStrongBinder()));
+            Vector<MediaResourcePolicy> policies;
+            readFromParcel(data, &policies);
+            config(policies);
+            return NO_ERROR;
+        } break;
+
+        case ADD_RESOURCE: {
+            CHECK_INTERFACE(IResourceManagerService, data, reply);
+            int pid = data.readInt32();
+            int64_t clientId = data.readInt64();
+            sp<IResourceManagerClient> client(
+                    interface_cast<IResourceManagerClient>(data.readStrongBinder()));
+            Vector<MediaResource> resources;
+            readFromParcel(data, &resources);
+            addResource(pid, clientId, client, resources);
+            return NO_ERROR;
+        } break;
+
+        case REMOVE_RESOURCE: {
+            CHECK_INTERFACE(IResourceManagerService, data, reply);
+            int64_t clientId = data.readInt64();
+            removeResource(clientId);
+            return NO_ERROR;
+        } break;
+
+        case RECLAIM_RESOURCE: {
+            CHECK_INTERFACE(IResourceManagerService, data, reply);
+            int callingPid = data.readInt32();
+            Vector<MediaResource> resources;
+            readFromParcel(data, &resources);
+            bool ret = reclaimResource(callingPid, resources);
+            reply->writeInt32(ret);
+            return NO_ERROR;
+        } break;
+
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android