622876c8ab
The superclock rate is variable and is stored in session files since 7.0 . It is set globally when reading from a session file, and it really should be reset to a known state whenever a new blank session is created from an existing one. Currently, that doesn't happen. We fix that by resetting it in Temporal::reset(). For now, we are duplicating the default superclock rate 282240000 from superclock.h , but we can drop that when all code paths that use superclock also use Temporal::reset(). This will provide an (extra) guarantee that set_superclock_ticks_per_second() always is invoked before creating TempoMap or using superclock_ticks_per_second() in other ways. The DEBUG_EARLY_SCTS_USE in superclock.h is thus closer to passing.
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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* Copyright (C) 2020 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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#include <typeinfo>
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#include "pbd/enumwriter.h"
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#include "temporal/types.h"
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#include "temporal/tempo.h"
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using namespace PBD;
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using namespace Temporal;
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using namespace std;
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static bool libtemporal_initialized = false;
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void
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setup_libtemporal_enums ()
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{
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EnumWriter& enum_writer (EnumWriter::instance());
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vector<int> i;
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vector<string> s;
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Temporal::TimeDomain td;
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Temporal::OverlapType _OverlapType;
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Temporal::Tempo::Type _TempoType;
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#define REGISTER(e) enum_writer.register_distinct (typeid(e).name(), i, s); i.clear(); s.clear()
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#define REGISTER_BITS(e) enum_writer.register_bits (typeid(e).name(), i, s); i.clear(); s.clear()
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#define REGISTER_ENUM(e) i.push_back (e); s.push_back (#e)
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#define REGISTER_CLASS_ENUM(t,e) i.push_back (t::e); s.push_back (#e)
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REGISTER_ENUM (AudioTime);
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REGISTER_ENUM (BeatTime);
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REGISTER (td);
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REGISTER_ENUM (Temporal::OverlapNone);
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REGISTER_ENUM (Temporal::OverlapInternal);
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REGISTER_ENUM (Temporal::OverlapStart);
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REGISTER_ENUM (Temporal::OverlapEnd);
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REGISTER_ENUM (Temporal::OverlapExternal);
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REGISTER(_OverlapType);
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REGISTER_CLASS_ENUM (Tempo, Ramped);
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REGISTER_CLASS_ENUM (Tempo, Constant);
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REGISTER (_TempoType);
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enum_writer.add_to_hack_table ("Tempo::Ramped", "Ramped");
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enum_writer.add_to_hack_table ("Tempo::Constant", "Constant");
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}
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void Temporal::init ()
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{
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if (!libtemporal_initialized) {
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setup_libtemporal_enums ();
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TempoMap::init ();
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libtemporal_initialized = true;
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}
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}
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void Temporal::reset ()
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{
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set_superclock_ticks_per_second (282240000); /* 2^10 * 3^2 * 5^4 * 7^2 */
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(void) TempoMap::write_copy(); /* we are going to throw away the return value and replace the map entirely */
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TempoMap::WritableSharedPtr new_map (new TempoMap (Tempo (120, 4), Meter (4, 4)));
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TempoMap::update (new_map);;
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}
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std::ostream&
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operator<< (std::ostream& o, Temporal::ratio_t const & r)
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{
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return o << r.numerator() << '/' << r.denominator();
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}
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