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58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2015 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "audio_monitor.h"
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#include "../general.h"
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void audio_monitor_adjust_system_rates(void)
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{
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float timing_skew;
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global_t *global = global_get_ptr();
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const struct retro_system_timing *info =
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(const struct retro_system_timing*)&global->system.av_info.timing;
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settings_t *settings = config_get_ptr();
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if (info->sample_rate <= 0.0)
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return;
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timing_skew = fabs(1.0f - info->fps /
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settings->video.refresh_rate);
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global->audio_data.in_rate = info->sample_rate;
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if (timing_skew <= settings->audio.max_timing_skew)
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global->audio_data.in_rate *= (settings->video.refresh_rate / info->fps);
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RARCH_LOG("Set audio input rate to: %.2f Hz.\n",
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global->audio_data.in_rate);
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}
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/**
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* audio_monitor_set_refresh_rate:
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*
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* Sets audio monitor refresh rate to new value.
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**/
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void audio_monitor_set_refresh_rate(void)
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{
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settings_t *settings = config_get_ptr();
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global_t *global = global_get_ptr();
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double new_src_ratio = (double)settings->audio.out_rate /
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global->audio_data.in_rate;
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global->audio_data.orig_src_ratio = new_src_ratio;
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global->audio_data.src_ratio = new_src_ratio;
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}
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