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/*
**
** 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();
// truncates size, but should be okay for this usecase
data->writeUint32(static_cast<uint32_t>(size));
for (size_t i = 0; i < size; i++) {
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 && data.dataAvail() > 0; 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(int pid, int64_t clientId) {
Parcel data, reply;
data.writeInterfaceToken(IResourceManagerService::getInterfaceDescriptor());
data.writeInt32(pid);
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);
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);
int pid = data.readInt32();
int64_t clientId = data.readInt64();
removeResource(pid, 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
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