80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
// ------------------------------------------------------------------------
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// eca-chainsetup-position.cpp: Global chainsetup position
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// Copyright (C) 1999-2003 Kai Vehmanen
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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
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// ------------------------------------------------------------------------
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#include <cmath>
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#include <math.h> /* ceil() */
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#include "eca-chainsetup-position.h"
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ECA_CHAINSETUP_POSITION::ECA_CHAINSETUP_POSITION(void)
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{
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looping_rep = false;
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max_length_set_rep = false;
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}
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ECA_CHAINSETUP_POSITION::~ECA_CHAINSETUP_POSITION(void)
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{
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}
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SAMPLE_SPECS::sample_pos_t ECA_CHAINSETUP_POSITION::max_length_in_samples(void) const
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{
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return(max_length_in_samples_rep);
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}
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double ECA_CHAINSETUP_POSITION::max_length_in_seconds_exact(void) const
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{
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return((double)max_length_in_samples_rep / (double)samples_per_second());
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}
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/**
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* Explicitly sets the chainsetup length (in seconds).
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*
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* A special-case value of '-1 * srate' can be used to override
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* a previously set chainsetup length.
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*
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* @post ((pos == -1 * samples_per_second()) && (max_length_set() != true)) ||
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* (max_length_set() == true)
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*/
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void ECA_CHAINSETUP_POSITION::set_max_length_in_samples(SAMPLE_SPECS::sample_pos_t pos)
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{
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max_length_in_samples_rep = pos;
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if (pos != -1 * samples_per_second()) {
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max_length_set_rep = true;
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}
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else {
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max_length_set_rep = false;
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}
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}
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void ECA_CHAINSETUP_POSITION::set_max_length_in_seconds(double pos_in_seconds)
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{
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set_max_length_in_samples(static_cast<SAMPLE_SPECS::sample_pos_t>(pos_in_seconds * samples_per_second()));
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}
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void ECA_CHAINSETUP_POSITION::set_samples_per_second(SAMPLE_SPECS::sample_rate_t new_value)
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{
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if (max_length_set() == true) {
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double ratio (new_value);
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ratio /= samples_per_second();
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set_max_length_in_samples(static_cast<SAMPLE_SPECS::sample_pos_t>(max_length_in_samples() * ratio));
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}
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ECA_AUDIO_POSITION::set_samples_per_second(new_value);
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}
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