libardour: new SegmentDescriptor type added (but not used)
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libs/ardour/ardour/segment_descriptor.h
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79
libs/ardour/ardour/segment_descriptor.h
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/*
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* Copyright (C) 2021 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 __libardour_segment_descriptor_h__
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#define __libardour_segment_descriptor_h__
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#include "temporal/timeline.h"
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#include "temporal/tempo.h"
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namespace ARDOUR {
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/* An object that describes an extent (duration & position), along with a
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* potentially expanding set of metadata about that extent (e.g. bpm, meter
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* etc.)
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*/
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class SegmentDescriptor {
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public:
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SegmentDescriptor ();
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/* This object does not use the tempo map to convert between time
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* domains, since it describes things that are not (always) on the
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* timeline.
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*/
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Temporal::TimeDomain time_domain() const { return _time_domain; }
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void set_position (Temporal::samplepos_t);
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void set_position (Temporal::Beats const &);
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void set_duration (Temporal::samplecnt_t);
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void set_duration (Temporal::Beats const &);
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void set_extent (Temporal::samplepos_t pos, Temporal::samplecnt_t dur);
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void set_extent (Temporal::Beats const & pos, Temporal::Beats const & dur);
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Temporal::timecnt_t extent() const;
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Temporal::timepos_t position() const { return extent().position(); }
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Temporal::Tempo tempo() const { return _tempo; }
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void set_tempo (Temporal::Tempo const&);
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Temporal::Meter meter() const { return _meter; }
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void set_meter (Temporal::Meter const&);
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private:
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Temporal::TimeDomain _time_domain;
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/* cannot use a union for these because Temporal::Beats has a
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"non-trivial" constructor.
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*/
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Temporal::samplepos_t _position_samples;
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Temporal::Beats _position_beats;
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Temporal::samplepos_t _duration_samples;
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Temporal::Beats _duration_beats;
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Temporal::Tempo _tempo;
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Temporal::Meter _meter;
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};
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}
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#endif /* __libardour_segment_descriptor_h__ */
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109
libs/ardour/segment_descriptor.cc
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109
libs/ardour/segment_descriptor.cc
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/*
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* Copyright (C) 2021 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 "ardour/segment_descriptor.h"
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using namespace ARDOUR;
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using namespace Temporal;
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SegmentDescriptor::SegmentDescriptor ()
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: _time_domain (AudioTime)
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, _position_samples (0)
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, _duration_samples (0)
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, _tempo (120, 4)
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, _meter (4, 4)
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{
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}
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void
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SegmentDescriptor::set_position (samplepos_t s)
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{
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if (_time_domain != AudioTime) {
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/* XXX error */
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return;
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}
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_position_samples = s;
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}
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void
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SegmentDescriptor::set_position (Temporal::Beats const & b)
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{
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if (_time_domain != BeatTime) {
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/* XXX error */
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return;
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}
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_position_beats = b;
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}
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void
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SegmentDescriptor::set_duration (samplepos_t s)
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{
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if (_time_domain != AudioTime) {
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/* XXX error */
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return;
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}
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_position_samples = s;
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}
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void
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SegmentDescriptor::set_duration (Temporal::Beats const & b)
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{
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if (_time_domain != BeatTime) {
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/* XXX error */
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return;
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}
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_duration_beats = b;
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}
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void
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SegmentDescriptor::set_extent (Temporal::Beats const & p, Temporal::Beats const & d)
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{
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_time_domain = BeatTime;
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_position_beats = p;
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_duration_beats = d;
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}
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void
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SegmentDescriptor::set_extent (samplepos_t p, samplecnt_t d)
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{
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_time_domain = AudioTime;
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_position_samples = p;
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_duration_samples = d;
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}
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timecnt_t
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SegmentDescriptor::extent() const
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{
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if (_time_domain == BeatTime) {
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return timecnt_t (_duration_beats, timepos_t (_position_beats));
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}
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return timecnt_t (_duration_samples, timepos_t (_position_samples));
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}
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void
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SegmentDescriptor::set_tempo (Tempo const & t)
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{
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_tempo = t;
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}
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void
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SegmentDescriptor::set_meter (Meter const & m)
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{
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_meter = m;
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}
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@ -208,6 +208,7 @@ libardour_sources = [
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'rt_tasklist.cc',
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'scene_change.cc',
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'search_paths.cc',
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'segment_descriptor.cc',
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'selection.cc',
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'send.cc',
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'session.cc',
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