8683fca395
this change introduces a new class LightFlattenable<> which is a protocol to flatten simple objects that don't require binders or file descriptors; the benefit of this protocol is that it doesn't require the objects to have a virtual table and give us a consitant way of doing this. we also introduce an implementation of this protocol for POD structures, LightFlattenablePod<>. Parcel has been update to handle this protocol automatically. Sensor, Rect, Point and Region now use this new protocol. Change-Id: Icb3ce7fa1d785249eb666f39c2129f2fc143ea4a
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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* Copyright (C) 2010 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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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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#include <utils/Vector.h>
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#include <utils/Timers.h>
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#include <binder/Parcel.h>
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#include <binder/IInterface.h>
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#include <gui/Sensor.h>
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#include <gui/ISensorServer.h>
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#include <gui/ISensorEventConnection.h>
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namespace android {
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// ----------------------------------------------------------------------------
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enum {
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GET_SENSOR_LIST = IBinder::FIRST_CALL_TRANSACTION,
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CREATE_SENSOR_EVENT_CONNECTION,
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};
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class BpSensorServer : public BpInterface<ISensorServer>
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{
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public:
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BpSensorServer(const sp<IBinder>& impl)
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: BpInterface<ISensorServer>(impl)
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{
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}
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virtual Vector<Sensor> getSensorList()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
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remote()->transact(GET_SENSOR_LIST, data, &reply);
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Sensor s;
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Vector<Sensor> v;
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int32_t n = reply.readInt32();
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v.setCapacity(n);
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while (n--) {
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reply.read(s);
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v.add(s);
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}
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return v;
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}
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virtual sp<ISensorEventConnection> createSensorEventConnection()
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor());
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remote()->transact(CREATE_SENSOR_EVENT_CONNECTION, data, &reply);
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return interface_cast<ISensorEventConnection>(reply.readStrongBinder());
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}
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};
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IMPLEMENT_META_INTERFACE(SensorServer, "android.gui.SensorServer");
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// ----------------------------------------------------------------------
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status_t BnSensorServer::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 GET_SENSOR_LIST: {
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CHECK_INTERFACE(ISensorServer, data, reply);
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Vector<Sensor> v(getSensorList());
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size_t n = v.size();
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reply->writeInt32(n);
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for (size_t i=0 ; i<n ; i++) {
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reply->write(v[i]);
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}
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return NO_ERROR;
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} break;
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case CREATE_SENSOR_EVENT_CONNECTION: {
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CHECK_INTERFACE(ISensorServer, data, reply);
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sp<ISensorEventConnection> connection(createSensorEventConnection());
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reply->writeStrongBinder(connection->asBinder());
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return NO_ERROR;
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} break;
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}
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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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