temporal: initial version of a time domain provider object
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libs/temporal/temporal/domain_provider.h
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libs/temporal/temporal/domain_provider.h
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/*
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Copyright (C) 2023 Paul Davis <paul@linuxaudiosystems.com>
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __temporal_domain_provider_h__
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#define __temporal_domain_provider_h__
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#include "temporal/types.h"
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namespace Temporal {
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class TimeDomainProvider {
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public:
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TimeDomainProvider () : have_domain (false), parent (nullptr) {}
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TimeDomainProvider (TimeDomain td) : have_domain (true), domain (td), parent (nullptr) {}
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TimeDomainProvider (TimeDomain td, TimeDomainProvider const & p) : have_domain (true), domain (td), parent (&p) {}
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TimeDomainProvider (TimeDomainProvider const & p) : have_domain (false), parent (&p) {}
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virtual ~TimeDomainProvider() {}
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TimeDomain time_domain() const { if (have_domain) return domain; if (parent) return parent->time_domain(); return AudioTime; }
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void set_time_domain (TimeDomain td) { have_domain = true; domain = td; }
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void clear_time_domain () { have_domain = false; }
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private:
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bool have_domain;
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TimeDomain domain;
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TimeDomainProvider const * parent;
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};
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}
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#endif /* __temporal_domain_provider_h__ */
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