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/*
* STMicroelectronics SW Sensor Base Class
*
* Copyright 2013-2015 STMicroelectronics Inc.
* Author: Denis Ciocca - <denis.ciocca@st.com>
*
* Licensed under the Apache License, Version 2.0 (the "License").
*/
#include <fcntl.h>
#include <assert.h>
#include <string.h>
#include "SWSensorBase.h"
SWSensorBase::SWSensorBase(const char *name, int handle, int sensor_type, int pipe_data_fd,
bool use_dependency_resolution, bool use_dependency_range, bool use_dependency_delay,
bool use_dependency_name) : SensorBase(name, handle, sensor_type, pipe_data_fd)
{
dependency_resolution = use_dependency_resolution;
dependency_range = use_dependency_range;
dependency_delay = use_dependency_delay;
dependency_name = use_dependency_name;
return;
}
SWSensorBase::~SWSensorBase()
{
return;
}
int SWSensorBase::AddSensorDependency(SensorBase *p)
{
struct sensor_t dependecy_data;
if (sensor_t_data.fifoMaxEventCount == 0)
sensor_t_data.fifoMaxEventCount = p->GetMaxFifoLenght();
else {
if (p->GetMaxFifoLenght() < (int)sensor_t_data.fifoMaxEventCount)
sensor_t_data.fifoMaxEventCount = p->GetMaxFifoLenght();
}
p->FillSensor_tData(&dependecy_data);
if (dependency_resolution)
sensor_t_data.resolution = dependecy_data.resolution;
if (dependency_range)
sensor_t_data.maxRange = dependecy_data.maxRange;
if (dependency_delay) {
if (sensor_t_data.minDelay == 0)
sensor_t_data.minDelay = dependecy_data.minDelay;
else {
if (dependecy_data.minDelay > sensor_t_data.minDelay)
sensor_t_data.minDelay = dependecy_data.minDelay;
}
if (sensor_t_data.maxDelay == 0)
sensor_t_data.maxDelay = dependecy_data.maxDelay;
else {
if (dependecy_data.maxDelay < sensor_t_data.maxDelay)
sensor_t_data.maxDelay = dependecy_data.maxDelay;
}
}
if (dependency_name) {
memcpy((char *)sensor_t_data.name, dependecy_data.name, strlen(dependecy_data.name) + 1);
}
return SensorBase::AddSensorDependency(p);
}
int SWSensorBase::FlushData(int)
{
int err, i;
if (GetStatus() && (GetMinTimeout() > 0)) {
for (i = 0; i < (int)dependencies_num; i++) {
err = dependencies[i]->FlushData(0);
if (err < 0)
return -EINVAL;
}
} else
return -EINVAL;
return SensorBase::FlushData(0);
}
void SWSensorBase::ThreadTask()
{
while (true) {
pthread_mutex_lock(&mutext.trigger_mutex);
pthread_cond_wait(&mutext.trigger_data_cond, &mutext.trigger_mutex);
TriggerEventReceived();
pthread_mutex_unlock(&mutext.trigger_mutex);
}
}
SWSensorBaseWithPollrate::SWSensorBaseWithPollrate(const char *name, int handle, int sensor_type, int pipe_data_fd,
bool use_dependency_resolution, bool use_dependency_range, bool use_dependency_delay,
bool use_dependency_name) : SWSensorBase(name, handle, sensor_type, pipe_data_fd,
use_dependency_resolution, use_dependency_range, use_dependency_delay, use_dependency_name)
{
}
SWSensorBaseWithPollrate::~SWSensorBaseWithPollrate()
{
}
int SWSensorBaseWithPollrate::SetDelay(int handle, int64_t period_ns, int64_t timeout)
{
int i, err;
int64_t temp_real_pollrate = 0;
err = SWSensorBase::SetDelay(handle, period_ns, timeout);
if (err < 0)
return err;
for (i = 0; i < (int)dependencies_num; i++) {
if (temp_real_pollrate < GetMinPeriod())
temp_real_pollrate = GetMinPeriod();
}
return 0;
}
void SWSensorBaseWithPollrate::WriteDataToPipe()
{
int err;
if (!GetStatusOfHandle(sensor_t_data.handle))
return;
if (sensor_event.timestamp >= (last_data_timestamp + real_pollrate)) {
err = write(android_pipe_fd, &sensor_event, sizeof(sensor_event));
if (err < 0) {
ALOGE("%s: Failed to write sensor data to pipe.", android_name);
return;
}
last_data_timestamp = sensor_event.timestamp;
}
}
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