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2554302281
Temporal::most_recent_engine_sample_rate is used in performance-critical code so shouldn't be accessed via a 'get()' function. But (via the TEMPORAL_SAMPLE_RATE #define) it does get accessed outside of libtemporal and therefore needs to get exported.
62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
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* Copyright (C) 2017 Paul Davis <paul@linuxaudiosystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ardour_superclock_h__
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#define __ardour_superclock_h__
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#include <stdint.h>
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#include "pbd/integer_division.h"
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#include "temporal/visibility.h"
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namespace Temporal {
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typedef int64_t superclock_t;
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#ifndef COMPILER_MSVC
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extern superclock_t _superclock_ticks_per_second;
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#else
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static superclock_t _superclock_ticks_per_second = 56448000; /* 2^10 * 3^2 * 5^3 * 7^2 */
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#endif
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extern bool scts_set;
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#ifdef DEBUG_EARLY_SCTS_USE
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#include <cstdlib>
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#include <csignal>
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static inline superclock_t superclock_ticks_per_second() { if (!scts_set) { raise (SIGUSR2); } return _superclock_ticks_per_second; }
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#else
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static inline superclock_t superclock_ticks_per_second() { return _superclock_ticks_per_second; }
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#endif
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static inline superclock_t superclock_to_samples (superclock_t s, int sr) { return int_div_round (s * sr, superclock_ticks_per_second()); }
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static inline superclock_t samples_to_superclock (int64_t samples, int sr) { return int_div_round (samples * superclock_ticks_per_second(), superclock_t (sr)); }
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LIBTEMPORAL_API extern int most_recent_engine_sample_rate;
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LIBTEMPORAL_API void set_sample_rate (int sr);
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LIBTEMPORAL_API void set_superclock_ticks_per_second (superclock_t sc);
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}
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#define TEMPORAL_SAMPLE_RATE (Temporal::most_recent_engine_sample_rate)
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#endif /* __ardour_superclock_h__ */
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