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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 "IDataSource"
#include <utils/Log.h>
#include <utils/Timers.h>
#include <media/IDataSource.h>
#include <binder/IMemory.h>
#include <binder/Parcel.h>
#include <media/stagefright/foundation/ADebug.h>
namespace android {
enum {
GET_IMEMORY = IBinder::FIRST_CALL_TRANSACTION,
READ_AT,
GET_SIZE,
CLOSE,
};
struct BpDataSource : public BpInterface<IDataSource> {
BpDataSource(const sp<IBinder>& impl) : BpInterface<IDataSource>(impl) {}
virtual sp<IMemory> getIMemory() {
Parcel data, reply;
data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
remote()->transact(GET_IMEMORY, data, &reply);
sp<IBinder> binder = reply.readStrongBinder();
return interface_cast<IMemory>(binder);
}
virtual ssize_t readAt(off64_t offset, size_t size) {
Parcel data, reply;
data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
data.writeInt64(offset);
data.writeInt64(size);
remote()->transact(READ_AT, data, &reply);
return reply.readInt64();
}
virtual status_t getSize(off64_t* size) {
Parcel data, reply;
data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
remote()->transact(GET_SIZE, data, &reply);
status_t err = reply.readInt32();
*size = reply.readInt64();
return err;
}
virtual void close() {
Parcel data, reply;
data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
remote()->transact(CLOSE, data, &reply);
}
};
IMPLEMENT_META_INTERFACE(DataSource, "android.media.IDataSource");
status_t BnDataSource::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
switch (code) {
case GET_IMEMORY: {
CHECK_INTERFACE(IDataSource, data, reply);
reply->writeStrongBinder(IInterface::asBinder(getIMemory()));
return NO_ERROR;
} break;
case READ_AT: {
CHECK_INTERFACE(IDataSource, data, reply);
off64_t offset = (off64_t) data.readInt64();
size_t size = (size_t) data.readInt64();
reply->writeInt64(readAt(offset, size));
return NO_ERROR;
} break;
case GET_SIZE: {
CHECK_INTERFACE(IDataSource, data, reply);
off64_t size;
status_t err = getSize(&size);
reply->writeInt32(err);
reply->writeInt64(size);
return NO_ERROR;
} break;
case CLOSE: {
CHECK_INTERFACE(IDataSource, data, reply);
close();
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
} // namespace android
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