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have the sensorsevice test print the delay of the first received event

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Change-Id: I89d63122574c3f8790f00512c76d59b463acf18f
This commit is contained in:
Mathias Agopian 2011-08-15 17:10:23 -07:00
parent 16c3e4ae72
commit 16bcf66afa
1 changed files with 12 additions and 4 deletions
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16
services/sensorservice/tests/sensorservicetest.cpp
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@ -22,6 +22,9 @@
using namespace android;
static nsecs_t sStartTime = 0;
int receiver(int fd, int events, void* data)
{
sp<SensorEventQueue> q((SensorEventQueue*)data);
@ -32,7 +35,7 @@ int receiver(int fd, int events, void* data)
while ((n = q->read(buffer, 8)) > 0) {
for (int i=0 ; i<n ; i++) {
if (buffer[i].type == Sensor::TYPE_GYROSCOPE) {
if (buffer[i].type == Sensor::TYPE_ACCELEROMETER) {
printf("time=%lld, value=<%5.1f,%5.1f,%5.1f>\n",
buffer[i].timestamp,
buffer[i].acceleration.x,
@ -43,9 +46,11 @@ int receiver(int fd, int events, void* data)
if (oldTimeStamp) {
float t = float(buffer[i].timestamp - oldTimeStamp) / s2ns(1);
printf("%f ms (%f Hz)\n", t*1000, 1.0/t);
} else {
float t = float(buffer[i].timestamp - sStartTime) / s2ns(1);
printf("first event: %f ms\n", t*1000);
}
oldTimeStamp = buffer[i].timestamp;
}
}
if (n<0 && n != -EAGAIN) {
@ -66,12 +71,15 @@ int main(int argc, char** argv)
sp<SensorEventQueue> q = mgr.createEventQueue();
printf("queue=%p\n", q.get());
Sensor const* accelerometer = mgr.getDefaultSensor(Sensor::TYPE_GYROSCOPE);
Sensor const* accelerometer = mgr.getDefaultSensor(Sensor::TYPE_ACCELEROMETER);
printf("accelerometer=%p (%s)\n",
accelerometer, accelerometer->getName().string());
sStartTime = systemTime();
q->enableSensor(accelerometer);
q->setEventRate(accelerometer, ms2ns(10));
q->setEventRate(accelerometer, ms2ns(200));
sp<Looper> loop = new Looper(false);
loop->addFd(q->getFd(), 0, ALOOPER_EVENT_INPUT, receiver, q.get());