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DSP load calculation: favor peak over average.

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This commit is contained in:
Robin Gareus 2015-04-29 21:27:03 +02:00
parent 729bc00f13
commit e3cd57ecb6
3 changed files with 28 additions and 8 deletions
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9
libs/backends/coreaudio/coreaudio_backend.cc
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@ -1584,7 +1584,14 @@ CoreAudioBackend::process_callback (const uint32_t n_samples, const uint64_t hos
/* calc DSP load. */
clock2 = g_get_monotonic_time();
const int64_t elapsed_time = clock2 - clock1;
_dsp_load = elapsed_time / nominal_time;
// low pass filter
const float load = elapsed_time / (float) nominal_time;
if (load > _dsp_load) {
_dsp_load = load;
} else {
const float a = .1 * _samples_per_period / _samplerate;
_dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
}
pthread_mutex_unlock (&_process_callback_mutex);
return 0;