56ae42613c
i) Send ack for wake_up sensors on the socket connection instead of using Binder RPC.
ii) Cache events per connection in case there are write failures. Compute cache size
from FIFO counts of sensors.
iii) Send FlushCompleteEvent only for apps that explicitly called flush().
Change-Id: I018969736b7794b1b930529586f2294a03ee8667
134 lines
4.5 KiB
C++
134 lines
4.5 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/Timers.h>
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#include <binder/Parcel.h>
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#include <binder/IInterface.h>
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#include <gui/ISensorEventConnection.h>
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#include <gui/BitTube.h>
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namespace android {
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// ----------------------------------------------------------------------------
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enum {
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GET_SENSOR_CHANNEL = IBinder::FIRST_CALL_TRANSACTION,
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ENABLE_DISABLE,
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SET_EVENT_RATE,
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FLUSH_SENSOR
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};
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class BpSensorEventConnection : public BpInterface<ISensorEventConnection>
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{
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public:
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BpSensorEventConnection(const sp<IBinder>& impl)
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: BpInterface<ISensorEventConnection>(impl)
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{
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}
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virtual sp<BitTube> getSensorChannel() const
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
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remote()->transact(GET_SENSOR_CHANNEL, data, &reply);
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return new BitTube(reply);
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}
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virtual status_t enableDisable(int handle, bool enabled, nsecs_t samplingPeriodNs,
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nsecs_t maxBatchReportLatencyNs, int reservedFlags)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
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data.writeInt32(handle);
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data.writeInt32(enabled);
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data.writeInt64(samplingPeriodNs);
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data.writeInt64(maxBatchReportLatencyNs);
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data.writeInt32(reservedFlags);
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remote()->transact(ENABLE_DISABLE, data, &reply);
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return reply.readInt32();
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}
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virtual status_t setEventRate(int handle, nsecs_t ns)
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{
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Parcel data, reply;
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data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
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data.writeInt32(handle);
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data.writeInt64(ns);
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remote()->transact(SET_EVENT_RATE, data, &reply);
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return reply.readInt32();
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}
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virtual status_t flush() {
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Parcel data, reply;
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data.writeInterfaceToken(ISensorEventConnection::getInterfaceDescriptor());
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remote()->transact(FLUSH_SENSOR, data, &reply);
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return reply.readInt32();
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}
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};
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IMPLEMENT_META_INTERFACE(SensorEventConnection, "android.gui.SensorEventConnection");
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// ----------------------------------------------------------------------------
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status_t BnSensorEventConnection::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_CHANNEL: {
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CHECK_INTERFACE(ISensorEventConnection, data, reply);
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sp<BitTube> channel(getSensorChannel());
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channel->writeToParcel(reply);
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return NO_ERROR;
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} break;
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case ENABLE_DISABLE: {
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CHECK_INTERFACE(ISensorEventConnection, data, reply);
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int handle = data.readInt32();
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int enabled = data.readInt32();
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nsecs_t samplingPeriodNs = data.readInt64();
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nsecs_t maxBatchReportLatencyNs = data.readInt64();
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int reservedFlags = data.readInt32();
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status_t result = enableDisable(handle, enabled, samplingPeriodNs,
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maxBatchReportLatencyNs, reservedFlags);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case SET_EVENT_RATE: {
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CHECK_INTERFACE(ISensorEventConnection, data, reply);
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int handle = data.readInt32();
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int ns = data.readInt64();
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status_t result = setEventRate(handle, ns);
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reply->writeInt32(result);
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return NO_ERROR;
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} break;
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case FLUSH_SENSOR: {
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CHECK_INTERFACE(ISensorEventConnection, data, reply);
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status_t result = flush();
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reply->writeInt32(result);
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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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