bool Jitterometer::RecordEndTime()
{
if (!num_cycles)
return false;
int cycles = num_cycles;
struct timeval timenow;
gettimeofday(&timenow, NULL);
if (starttime_valid)
{
times[count] = (timenow.tv_sec - starttime.tv_sec ) * 1000000 +
(timenow.tv_usec - starttime.tv_usec) ;
count++;
}
starttime_valid = 0;
if (count >= cycles)
{
/* compute and display stuff, reset count to -1 */
double mean = 0, sum_of_squared_deviations=0;
double standard_deviation;
double tottime = 0;
int i;
/* compute the mean */
for(i = 0; i < cycles; i++)
mean += times[i];
tottime = mean;
mean /= cycles;
if (tottime > 0)
last_fps = cycles / tottime * 1000000;
/* compute the sum of the squares of each deviation from the mean */
for(i = 0; i < cycles; i++)
sum_of_squared_deviations += (mean - times[i]) * (mean - times[i]);
/* compute standard deviation */
standard_deviation = sqrt(sum_of_squared_deviations / (cycles - 1));
if (mean > 0)
last_sd = standard_deviation / mean;
/* retrieve load if available */
QString extra;
lastcpustats = GetCPUStat();
if (!lastcpustats.isEmpty())
extra = QString("CPUs: ") + lastcpustats;
LOG(VB_PLAYBACK, LOG_INFO,
name + QString("Mean: %1 Std.Dev: %2 fps: %3 ")
.arg((int)mean).arg((int)standard_deviation)
.arg(last_fps, 0, 'f', 2) + extra);
count = 0;
return true;
}
return false;
}
bool Jitterometer::RecordEndTime()
{
if (!m_num_cycles)
return false;
int cycles = m_num_cycles;
struct timeval timenow;
gettimeofday(&timenow, nullptr);
if (m_starttime_valid)
{
m_times[m_count] = (timenow.tv_sec - m_starttime.tv_sec ) * 1000000 +
(timenow.tv_usec - m_starttime.tv_usec) ;
m_count++;
}
m_starttime_valid = false;
if (m_count >= cycles)
{
/* compute and display stuff, reset count to -1 */
double mean = 0, sum_of_squared_deviations=0;
double standard_deviation;
double tottime = 0;
int i;
/* compute the mean */
for(i = 0; i < cycles; i++)
mean += m_times[i];
tottime = mean;
mean /= cycles;
if (tottime > 0)
m_last_fps = cycles / tottime * 1000000;
/* compute the sum of the squares of each deviation from the mean */
for(i = 0; i < cycles; i++)
sum_of_squared_deviations += (mean - m_times[i]) * (mean - m_times[i]);
/* compute standard deviation */
standard_deviation = sqrt(sum_of_squared_deviations / (cycles - 1));
if (mean > 0)
m_last_sd = standard_deviation / mean;
/* retrieve load if available */
QString extra;
m_lastcpustats = GetCPUStat();
if (!m_lastcpustats.isEmpty())
extra = QString("CPUs: ") + m_lastcpustats;
LOG(VB_GENERAL, LOG_INFO,
m_name + QString("FPS: %1 Mean: %2 Std.Dev: %3 ")
.arg(m_last_fps, 7, 'f', 2).arg((int)mean, 5)
.arg((int)standard_deviation, 5) + extra);
m_count = 0;
return true;
}
return false;
}
void UIPerformance::RecordEndTime(quint64 Time)
{
if (!m_totalCount)
return;
int cycles = m_totalCount;
if (m_starttimeValid)
{
m_totalTimes[m_currentCount] = Time - m_starttime;
m_currentCount++;
}
m_starttimeValid = false;
if (m_currentCount >= cycles)
{
qreal totalmean = 0.0;
qreal rendermean = 0.0;
for(int i = 0; i < cycles; i++)
{
rendermean += m_renderTimes[i];
totalmean += m_totalTimes[i];
}
if (totalmean > 0)
m_lastFPS = (cycles / totalmean) * 1000000.0;
totalmean /= cycles;
rendermean /= cycles;
qreal totaldeviations = 0.0;
qreal renderdeviations = 0.0;
for(int i = 0; i < cycles; i++)
{
renderdeviations += (rendermean - m_renderTimes[i]) * (rendermean - m_renderTimes[i]);
totaldeviations += (totalmean - m_totalTimes[i]) * (totalmean - m_totalTimes[i]);
}
qreal rendersd = sqrt(renderdeviations / (cycles - 1));
qreal totalsd = sqrt(totaldeviations / (cycles - 1));
if (totalmean > 0.0)
m_lastTotalSD = totalsd / totalmean;
if (rendermean > 0.0)
m_lastRenderSD = rendersd / rendermean;
QString extra;
m_lastCPUStats = GetCPUStat();
if (!m_lastCPUStats.isEmpty())
extra = QString("Load: ") + m_lastCPUStats;
LOG(VB_GUI, LOG_INFO,
QString("FPS: %1+-%3 Draw: %4% ")
.arg(m_lastFPS, 4, 'f', 3)
.arg(m_lastTotalSD, 2, 'f', 2)
.arg((rendermean / totalmean) * 100.0, 2, 'f', 0)
+ extra);
m_currentCount = 0;
return;
}
return;
}
