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index : libcamera/vivid.git | |
libcamera pipeline handler for VIVID | git repository hosting on libcamera.org |
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* timer.cpp - Timer test
*/
#include <chrono>
#include <iostream>
#include <libcamera/event_dispatcher.h>
#include <libcamera/timer.h>
#include "test.h"
#include "thread.h"
using namespace std;
using namespace libcamera;
class ManagedTimer : public Timer
{
public:
ManagedTimer()
: Timer(), count_(0)
{
timeout.connect(this, &ManagedTimer::timeoutHandler);
}
void start(int msec)
{
count_ = 0;
start_ = std::chrono::steady_clock::now();
expiration_ = std::chrono::steady_clock::time_point();
Timer::start(msec);
}
void start(std::chrono::steady_clock::time_point deadline)
{
count_ = 0;
start_ = std::chrono::steady_clock::now();
expiration_ = std::chrono::steady_clock::time_point();
Timer::start(deadline);
}
int jitter()
{
std::chrono::steady_clock::duration duration = expiration_ - deadline();
return abs(std::chrono::duration_cast<std::chrono::milliseconds>(duration).count());
}
bool hasFailed()
{
return isRunning() || count_ != 1 || jitter() > 50;
}
private:
void timeoutHandler(Timer *timer)
{
expiration_ = std::chrono::steady_clock::now();
count_++;
}
unsigned int count_;
std::chrono::steady_clock::time_point start_;
std::chrono::steady_clock::time_point expiration_;
};
class TimerTest : public Test
{
protected:
int init()
{
return 0;
}
int run()
{
EventDispatcher *dispatcher = Thread::current()->eventDispatcher();
ManagedTimer timer;
ManagedTimer timer2;
/* Timer expiration. */
timer.start(1000);
if (!timer.isRunning()) {
cout << "Timer expiration test failed" << endl;
return TestFail;
}
dispatcher->processEvents();
if (timer.hasFailed()) {
cout << "Timer expiration test failed" << endl;
return TestFail;
}
/*
* 32 bit wrap test
* Nanosecond resolution in a 32 bit value wraps at 4.294967
* seconds (0xFFFFFFFF / 1000000)
*/
timer.start(4295);
dispatcher->processEvents();
if (timer.hasFailed()) {
cout << "Timer expiration test failed" << endl;
return TestFail;
}
/* Timer restart. */