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f244972b5a
There is no need for scts_set now. "Early" use of SCTS will just give the value 0. DEBUG_EARLY_SCTS_USE can thus just check that _superclock_ticks_per_second doesn't have the initial value of 0.
66 lines
2.1 KiB
C++
66 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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#ifdef DEBUG_EARLY_SCTS_USE
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#include <cstdlib>
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#include <csignal>
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#endif
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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 = 0;
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#endif
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#ifdef DEBUG_EARLY_SCTS_USE
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static inline superclock_t superclock_ticks_per_second() {
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if (_superclock_ticks_per_second == 0) {
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raise (SIGUSR2);
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}
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return _superclock_ticks_per_second;
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}
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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 PBD::muldiv_floor (s, sr, superclock_ticks_per_second()); }
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static inline superclock_t samples_to_superclock (int64_t samples, int sr) { return PBD::muldiv_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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