diff options
Diffstat (limited to 'libs/ardour/dsp_load_calculator.cc')
| -rw-r--r-- | libs/ardour/dsp_load_calculator.cc | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/libs/ardour/dsp_load_calculator.cc b/libs/ardour/dsp_load_calculator.cc deleted file mode 100644 index 789d3704f4..0000000000 --- a/libs/ardour/dsp_load_calculator.cc +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "ardour/dsp_load_calculator.h" - -namespace ARDOUR { - -void -DSPLoadCalculator::set_stop_timestamp_us(int64_t stop_timestamp_us) -{ - m_stop_timestamp_us = stop_timestamp_us; - - /* querying the performance counter can fail occasionally (-1). - * Also on some multi-core systems, timers are CPU specific and not - * synchronized. We assume they differ more than a few milliseconds - * (4 * nominal cycle time) and simply ignore cases where the - * execution switches cores. - */ - if (m_start_timestamp_us < 0 || m_stop_timestamp_us < 0 || - m_start_timestamp_us > m_stop_timestamp_us || - elapsed_time_us() > max_timer_error()) { - return; - } - - if (elapsed_time_us() > m_max_time_us) { - m_dsp_load = 1.0f; - } else { - const float load = elapsed_time_us() / (float)m_max_time_us; - if (load > m_dsp_load) { - m_dsp_load = load; - } else { - const float alpha = 0.2f * (m_max_time_us * 1e-6f); - m_dsp_load = m_dsp_load + alpha * (load - m_dsp_load) + 1e-12; - } - } -} - -} // namespace ARDOUR |