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170 lines
5.3 KiB
170 lines
5.3 KiB
/*
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**
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** Copyright 2015, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "IResourceManagerService"
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#include <utils/Log.h>
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#include <media/IResourceManagerService.h>
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#include <binder/Parcel.h>
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#include <stdint.h>
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#include <sys/types.h>
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namespace android {
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enum {
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CONFIG = IBinder::FIRST_CALL_TRANSACTION,
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ADD_RESOURCE,
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REMOVE_RESOURCE,
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RECLAIM_RESOURCE,
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};
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template <typename T>
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static void writeToParcel(Parcel *data, const Vector<T> &items) {
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size_t size = items.size();
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// truncates size, but should be okay for this usecase
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data->writeUint32(static_cast<uint32_t>(size));
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for (size_t i = 0; i < size; i++) {
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items[i].writeToParcel(data);
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}
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}
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template <typename T>
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static void readFromParcel(const Parcel &data, Vector<T> *items) {
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size_t size = (size_t)data.readUint32();
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for (size_t i = 0; i < size && data.dataAvail() > 0; i++) {
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T item;
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item.readFromParcel(data);
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items->add(item);
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}
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}
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class BpResourceManagerService : public BpInterface<IResourceManagerService>
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{
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public:
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explicit BpResourceManagerService(const sp<IBinder> &impl)
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: BpInterface<IResourceManagerService>(impl)
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{
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}
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virtual void config(const Vector<MediaResourcePolicy> &policies) {
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Parcel data, reply;
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data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
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writeToParcel(&data, policies);
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remote()->transact(CONFIG, data, &reply);
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}
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virtual void addResource(
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int pid,
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int64_t clientId,
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const sp<IResourceManagerClient> client,
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const Vector<MediaResource> &resources) {
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Parcel data, reply;
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data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
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data.writeInt32(pid);
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data.writeInt64(clientId);
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data.writeStrongBinder(IInterface::asBinder(client));
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writeToParcel(&data, resources);
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remote()->transact(ADD_RESOURCE, data, &reply);
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}
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virtual void removeResource(int pid, int64_t clientId) {
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Parcel data, reply;
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data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
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data.writeInt32(pid);
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data.writeInt64(clientId);
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remote()->transact(REMOVE_RESOURCE, data, &reply);
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}
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virtual bool reclaimResource(int callingPid, const Vector<MediaResource> &resources) {
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Parcel data, reply;
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data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
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data.writeInt32(callingPid);
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writeToParcel(&data, resources);
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bool ret = false;
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status_t status = remote()->transact(RECLAIM_RESOURCE, data, &reply);
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if (status == NO_ERROR) {
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ret = (bool)reply.readInt32();
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}
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return ret;
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}
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};
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IMPLEMENT_META_INTERFACE(ResourceManagerService, "android.media.IResourceManagerService");
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// ----------------------------------------------------------------------
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status_t BnResourceManagerService::onTransact(
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uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags)
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{
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switch (code) {
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case CONFIG: {
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CHECK_INTERFACE(IResourceManagerService, data, reply);
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Vector<MediaResourcePolicy> policies;
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readFromParcel(data, &policies);
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config(policies);
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return NO_ERROR;
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} break;
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case ADD_RESOURCE: {
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CHECK_INTERFACE(IResourceManagerService, data, reply);
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int pid = data.readInt32();
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int64_t clientId = data.readInt64();
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sp<IResourceManagerClient> client(
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interface_cast<IResourceManagerClient>(data.readStrongBinder()));
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if (client == NULL) {
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return NO_ERROR;
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}
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Vector<MediaResource> resources;
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readFromParcel(data, &resources);
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addResource(pid, clientId, client, resources);
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return NO_ERROR;
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} break;
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case REMOVE_RESOURCE: {
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CHECK_INTERFACE(IResourceManagerService, data, reply);
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int pid = data.readInt32();
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int64_t clientId = data.readInt64();
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removeResource(pid, clientId);
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return NO_ERROR;
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} break;
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case RECLAIM_RESOURCE: {
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CHECK_INTERFACE(IResourceManagerService, data, reply);
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int callingPid = data.readInt32();
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Vector<MediaResource> resources;
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readFromParcel(data, &resources);
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bool ret = reclaimResource(callingPid, resources);
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reply->writeInt32(ret);
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return NO_ERROR;
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} break;
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default:
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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