144 lines
4.4 KiB
C++
144 lines
4.4 KiB
C++
/*
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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 "IDataSource"
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#include <utils/Log.h>
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#include <utils/Timers.h>
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#include <android/IDataSource.h>
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#include <binder/IMemory.h>
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#include <binder/Parcel.h>
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#include <media/stagefright/foundation/ADebug.h>
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namespace android {
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enum {
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GET_IMEMORY = IBinder::FIRST_CALL_TRANSACTION,
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READ_AT,
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GET_SIZE,
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CLOSE,
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GET_FLAGS,
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TO_STRING,
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};
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struct BpDataSource : public BpInterface<IDataSource> {
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explicit BpDataSource(const sp<IBinder>& impl)
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: BpInterface<IDataSource>(impl) {}
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virtual sp<IMemory> getIMemory() {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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remote()->transact(GET_IMEMORY, data, &reply);
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sp<IBinder> binder = reply.readStrongBinder();
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return interface_cast<IMemory>(binder);
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}
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virtual ssize_t readAt(off64_t offset, size_t size) {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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data.writeInt64(offset);
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data.writeInt64(size);
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status_t err = remote()->transact(READ_AT, data, &reply);
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if (err != OK) {
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return err;
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}
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int64_t value = 0;
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err = reply.readInt64(&value);
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if (err != OK) {
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return err;
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}
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return (ssize_t)value;
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}
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virtual status_t getSize(off64_t* size) {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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remote()->transact(GET_SIZE, data, &reply);
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status_t err = reply.readInt32();
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*size = reply.readInt64();
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return err;
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}
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virtual void close() {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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remote()->transact(CLOSE, data, &reply);
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}
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virtual uint32_t getFlags() {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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remote()->transact(GET_FLAGS, data, &reply);
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return reply.readUint32();
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}
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virtual String8 toString() {
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Parcel data, reply;
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data.writeInterfaceToken(IDataSource::getInterfaceDescriptor());
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remote()->transact(TO_STRING, data, &reply);
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return reply.readString8();
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}
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};
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IMPLEMENT_META_INTERFACE(DataSource, "android.media.IDataSource");
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status_t BnDataSource::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) {
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switch (code) {
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case GET_IMEMORY: {
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CHECK_INTERFACE(IDataSource, data, reply);
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reply->writeStrongBinder(IInterface::asBinder(getIMemory()));
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return NO_ERROR;
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} break;
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case READ_AT: {
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CHECK_INTERFACE(IDataSource, data, reply);
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off64_t offset = (off64_t) data.readInt64();
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size_t size = (size_t) data.readInt64();
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reply->writeInt64(readAt(offset, size));
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return NO_ERROR;
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} break;
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case GET_SIZE: {
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CHECK_INTERFACE(IDataSource, data, reply);
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off64_t size;
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status_t err = getSize(&size);
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reply->writeInt32(err);
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reply->writeInt64(size);
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return NO_ERROR;
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} break;
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case CLOSE: {
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CHECK_INTERFACE(IDataSource, data, reply);
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close();
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return NO_ERROR;
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} break;
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case GET_FLAGS: {
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CHECK_INTERFACE(IDataSource, data, reply);
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reply->writeUint32(getFlags());
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return NO_ERROR;
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} break;
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case TO_STRING: {
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CHECK_INTERFACE(IDataSource, data, reply);
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reply->writeString8(toString());
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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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} // namespace android
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