git-svn-id: svn://localhost/ardour2/branches/3.0@6702 d708f5d6-7413-0410-9779-e7cbd77b26cf
1530 lines
38 KiB
C++
1530 lines
38 KiB
C++
/*
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Copyright (C) 2000-2006 Paul Davis
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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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#include <cmath>
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#include <climits>
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#include <cfloat>
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#include <algorithm>
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#include <set>
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#include <glibmm/thread.h>
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#include "pbd/basename.h"
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#include "pbd/xml++.h"
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#include "pbd/stacktrace.h"
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#include "pbd/enumwriter.h"
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#include "pbd/convert.h"
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#include "evoral/Curve.hpp"
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#include "ardour/audioregion.h"
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#include "ardour/debug.h"
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#include "ardour/session.h"
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#include "ardour/gain.h"
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#include "ardour/dB.h"
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#include "ardour/playlist.h"
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#include "ardour/audiofilesource.h"
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#include "ardour/region_factory.h"
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#include "ardour/runtime_functions.h"
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#include "ardour/transient_detector.h"
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#include "i18n.h"
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#include <locale.h>
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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namespace ARDOUR {
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namespace Properties {
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PBD::PropertyDescriptor<bool> envelope_active;
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PBD::PropertyDescriptor<bool> default_fade_in;
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PBD::PropertyDescriptor<bool> default_fade_out;
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PBD::PropertyDescriptor<bool> fade_in_active;
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PBD::PropertyDescriptor<bool> fade_out_active;
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PBD::PropertyDescriptor<float> scale_amplitude;
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}
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}
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void
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AudioRegion::make_property_quarks ()
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{
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Properties::envelope_active.id = g_quark_from_static_string (X_("envelope-active"));
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Properties::default_fade_in.id = g_quark_from_static_string (X_("default-fade-in"));
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Properties::default_fade_out.id = g_quark_from_static_string (X_("default-fade-out"));
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Properties::fade_in_active.id = g_quark_from_static_string (X_("fade-in-active"));
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Properties::fade_out_active.id = g_quark_from_static_string (X_("fade-out-active"));
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Properties::scale_amplitude.id = g_quark_from_static_string (X_("scale-amplitude"));
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}
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void
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AudioRegion::register_properties ()
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{
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/* no need to register parent class properties */
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add_property (_envelope_active);
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add_property (_default_fade_in);
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add_property (_default_fade_out);
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add_property (_fade_in_active);
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add_property (_fade_out_active);
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add_property (_scale_amplitude);
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}
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#define AUDIOREGION_STATE_DEFAULT \
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_envelope_active (Properties::envelope_active, false) \
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, _default_fade_in (Properties::default_fade_in, true) \
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, _default_fade_out (Properties::default_fade_out, true) \
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, _fade_in_active (Properties::fade_in_active, true) \
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, _fade_out_active (Properties::fade_out_active, true) \
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, _scale_amplitude (Properties::scale_amplitude, 0.0)
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#define AUDIOREGION_COPY_STATE(other) \
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_envelope_active (other->_envelope_active) \
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, _default_fade_in (other->_default_fade_in) \
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, _default_fade_out (other->_default_fade_out) \
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, _fade_in_active (other->_fade_in_active) \
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, _fade_out_active (other->_fade_out_active) \
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, _scale_amplitude (other->_scale_amplitude)
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/* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
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void
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AudioRegion::init ()
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{
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register_properties ();
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set_default_fades ();
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set_default_envelope ();
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listen_to_my_curves ();
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connect_to_analysis_changed ();
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connect_to_header_position_offset_changed ();
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}
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/** Constructor for use by derived types only */
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AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
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: Region (s, start, len, name, DataType::AUDIO)
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, AUDIOREGION_STATE_DEFAULT
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, _automatable (s)
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, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
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, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
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, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
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, _fade_in_suspended (0)
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, _fade_out_suspended (0)
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{
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init ();
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assert (_sources.size() == _master_sources.size());
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}
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/** Basic AudioRegion constructor */
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AudioRegion::AudioRegion (const SourceList& srcs)
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: Region (srcs)
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, AUDIOREGION_STATE_DEFAULT
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, _automatable(srcs[0]->session())
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, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
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, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
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, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
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, _fade_in_suspended (0)
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, _fade_out_suspended (0)
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{
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init ();
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assert (_sources.size() == _master_sources.size());
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}
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AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes64_t offset, bool offset_relative)
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: Region (other, offset, offset_relative)
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, AUDIOREGION_COPY_STATE (other)
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, _automatable (other->session())
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, _fade_in (new AutomationList (*other->_fade_in))
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, _fade_out (new AutomationList (*other->_fade_out))
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/* XXX is this guaranteed to work for all values of offset+offset_relative? */
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, _envelope (new AutomationList (*other->_envelope, _start, _start + _length))
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, _fade_in_suspended (0)
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, _fade_out_suspended (0)
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{
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/* don't use init here, because we got fade in/out from the other region
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*/
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register_properties ();
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listen_to_my_curves ();
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connect_to_analysis_changed ();
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connect_to_header_position_offset_changed ();
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assert(_type == DataType::AUDIO);
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assert (_sources.size() == _master_sources.size());
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}
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AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
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: Region (boost::static_pointer_cast<const Region>(other), srcs)
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, AUDIOREGION_COPY_STATE (other)
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, _automatable (other->session())
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, _fade_in (new AutomationList (*other->_fade_in))
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, _fade_out (new AutomationList (*other->_fade_out))
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, _envelope (new AutomationList (*other->_envelope))
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, _fade_in_suspended (0)
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, _fade_out_suspended (0)
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{
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/* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
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register_properties ();
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listen_to_my_curves ();
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connect_to_analysis_changed ();
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connect_to_header_position_offset_changed ();
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assert (_sources.size() == _master_sources.size());
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}
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AudioRegion::AudioRegion (SourceList& srcs)
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: Region (srcs)
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, AUDIOREGION_STATE_DEFAULT
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, _automatable(srcs[0]->session())
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, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
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, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
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, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
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, _fade_in_suspended (0)
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, _fade_out_suspended (0)
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{
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init ();
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assert(_type == DataType::AUDIO);
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assert (_sources.size() == _master_sources.size());
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}
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AudioRegion::~AudioRegion ()
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{
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}
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void
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AudioRegion::post_set ()
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{
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if (!_sync_marked) {
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_sync_position = _start;
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}
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/* return to default fades if the existing ones are too long */
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if (_left_of_split) {
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if (_fade_in->back()->when >= _length) {
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set_default_fade_in ();
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}
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set_default_fade_out ();
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_left_of_split = false;
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}
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if (_right_of_split) {
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if (_fade_out->back()->when >= _length) {
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set_default_fade_out ();
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}
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set_default_fade_in ();
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_right_of_split = false;
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}
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}
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void
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AudioRegion::connect_to_analysis_changed ()
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{
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for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
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(*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
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}
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}
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void
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AudioRegion::connect_to_header_position_offset_changed ()
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{
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set<boost::shared_ptr<Source> > unique_srcs;
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for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
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if (unique_srcs.find (*i) == unique_srcs.end ()) {
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unique_srcs.insert (*i);
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boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
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if (afs) {
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afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
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}
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}
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}
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}
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void
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AudioRegion::listen_to_my_curves ()
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{
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_envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
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_fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
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_fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
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}
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void
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AudioRegion::set_envelope_active (bool yn)
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{
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if (envelope_active() != yn) {
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_envelope_active = yn;
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send_change (PropertyChange (Properties::envelope_active));
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}
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}
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ARDOUR::nframes_t
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AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
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{
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if (chan_n >= _sources.size()) {
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return 0;
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}
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if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
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return 0;
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} else {
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if (_scale_amplitude != 1.0f) {
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for (nframes_t n = 0; n < npeaks; ++n) {
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buf[n].max *= _scale_amplitude;
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buf[n].min *= _scale_amplitude;
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}
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}
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return cnt;
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}
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}
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framecnt_t
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AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
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{
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/* raw read, no fades, no gain, nada */
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return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, 0, 0, ReadOps (0));
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}
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framecnt_t
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AudioRegion::read_with_ops (Sample* buf, framepos_t file_position, framecnt_t cnt, int channel, ReadOps rops) const
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{
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return _read_at (_sources, _length, buf, 0, 0, file_position, cnt, channel, 0, 0, rops);
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}
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framecnt_t
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AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
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framepos_t file_position, framecnt_t cnt, uint32_t chan_n,
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framecnt_t read_frames, framecnt_t skip_frames) const
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{
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/* regular diskstream/butler read complete with fades etc */
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return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
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file_position, cnt, chan_n, read_frames, skip_frames, ReadOps (~0));
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}
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framecnt_t
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AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
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framepos_t position, framecnt_t cnt, uint32_t chan_n) const
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{
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/* do not read gain/scaling/fades and do not count this disk i/o in statistics */
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return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
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buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0, ReadOps (0));
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}
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framecnt_t
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AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit,
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Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
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framepos_t position,
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framecnt_t cnt,
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uint32_t chan_n,
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framecnt_t /*read_frames*/,
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framecnt_t /*skip_frames*/,
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ReadOps rops) const
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{
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frameoffset_t internal_offset;
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frameoffset_t buf_offset;
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framecnt_t to_read;
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bool raw = (rops == ReadOpsNone);
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if (muted() && !raw) {
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return 0; /* read nothing */
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}
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/* precondition: caller has verified that we cover the desired section */
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if (position < _position) {
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internal_offset = 0;
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buf_offset = _position - position;
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cnt -= buf_offset;
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} else {
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internal_offset = position - _position;
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buf_offset = 0;
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}
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if (internal_offset >= limit) {
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return 0; /* read nothing */
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}
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if ((to_read = min (cnt, limit - internal_offset)) == 0) {
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return 0; /* read nothing */
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}
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if (opaque() || raw) {
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/* overwrite whatever is there */
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mixdown_buffer = buf + buf_offset;
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} else {
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mixdown_buffer += buf_offset;
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}
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if (rops & ReadOpsCount) {
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_read_data_count = 0;
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}
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if (chan_n < n_channels()) {
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boost::shared_ptr<AudioSource> src = audio_source(chan_n);
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if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
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return 0; /* "read nothing" */
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}
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if (rops & ReadOpsCount) {
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_read_data_count += src->read_data_count();
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}
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} else {
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/* track is N-channel, this region has less channels; silence the ones
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we don't have.
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*/
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memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
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}
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if (rops & ReadOpsFades) {
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/* fade in */
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if (_fade_in_active && _session.config.get_use_region_fades()) {
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nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
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/* see if this read is within the fade in */
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if (internal_offset < fade_in_length) {
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nframes_t fi_limit;
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fi_limit = min (to_read, fade_in_length - internal_offset);
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_fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit);
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for (nframes_t n = 0; n < fi_limit; ++n) {
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mixdown_buffer[n] *= gain_buffer[n];
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}
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}
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}
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/* fade out */
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if (_fade_out_active && _session.config.get_use_region_fades()) {
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/* see if some part of this read is within the fade out */
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/* ................. >| REGION
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limit
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{ } FADE
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fade_out_length
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^
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limit - fade_out_length
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|--------------|
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^internal_offset
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^internal_offset + to_read
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we need the intersection of [internal_offset,internal_offset+to_read] with
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[limit - fade_out_length, limit]
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*/
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nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
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nframes_t fade_interval_start = max(internal_offset, limit-fade_out_length);
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nframes_t fade_interval_end = min(internal_offset + to_read, limit);
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if (fade_interval_end > fade_interval_start) {
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/* (part of the) the fade out is in this buffer */
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nframes_t fo_limit = fade_interval_end - fade_interval_start;
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nframes_t curve_offset = fade_interval_start - (limit-fade_out_length);
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nframes_t fade_offset = fade_interval_start - internal_offset;
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_fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit);
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for (nframes_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) {
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mixdown_buffer[m] *= gain_buffer[n];
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}
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}
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}
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}
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/* Regular gain curves and scaling */
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if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
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_envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
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if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
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for (nframes_t n = 0; n < to_read; ++n) {
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mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
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}
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} else {
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for (nframes_t n = 0; n < to_read; ++n) {
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mixdown_buffer[n] *= gain_buffer[n];
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}
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}
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} else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
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// XXX this should be using what in 2.0 would have been:
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// Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
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|
|
for (nframes_t n = 0; n < to_read; ++n) {
|
|
mixdown_buffer[n] *= _scale_amplitude;
|
|
}
|
|
}
|
|
|
|
if (!opaque()) {
|
|
|
|
/* gack. the things we do for users.
|
|
*/
|
|
|
|
buf += buf_offset;
|
|
|
|
for (nframes_t n = 0; n < to_read; ++n) {
|
|
buf[n] += mixdown_buffer[n];
|
|
}
|
|
}
|
|
|
|
return to_read;
|
|
}
|
|
|
|
XMLNode&
|
|
AudioRegion::state (bool full)
|
|
{
|
|
XMLNode& node (Region::state (full));
|
|
XMLNode *child;
|
|
char buf[64];
|
|
char buf2[64];
|
|
LocaleGuard lg (X_("POSIX"));
|
|
|
|
|
|
// XXX these should move into Region
|
|
|
|
for (uint32_t n=0; n < _sources.size(); ++n) {
|
|
snprintf (buf2, sizeof(buf2), "source-%d", n);
|
|
_sources[n]->id().print (buf, sizeof (buf));
|
|
node.add_property (buf2, buf);
|
|
}
|
|
|
|
for (uint32_t n=0; n < _master_sources.size(); ++n) {
|
|
snprintf (buf2, sizeof(buf2), "master-source-%d", n);
|
|
_master_sources[n]->id().print (buf, sizeof (buf));
|
|
node.add_property (buf2, buf);
|
|
}
|
|
|
|
snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
|
|
node.add_property ("channels", buf);
|
|
|
|
if (full) {
|
|
Stateful::add_properties (node);
|
|
}
|
|
|
|
child = node.add_child ("Envelope");
|
|
|
|
if (full) {
|
|
bool default_env = false;
|
|
|
|
// If there are only two points, the points are in the start of the region and the end of the region
|
|
// so, if they are both at 1.0f, that means the default region.
|
|
|
|
if (_envelope->size() == 2 &&
|
|
_envelope->front()->value == 1.0f &&
|
|
_envelope->back()->value==1.0f) {
|
|
if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
|
|
default_env = true;
|
|
}
|
|
}
|
|
|
|
if (default_env) {
|
|
child->add_property ("default", "yes");
|
|
} else {
|
|
child->add_child_nocopy (_envelope->get_state ());
|
|
}
|
|
|
|
} else {
|
|
child->add_property ("default", "yes");
|
|
}
|
|
|
|
if (full && _extra_xml) {
|
|
node.add_child_copy (*_extra_xml);
|
|
}
|
|
|
|
return node;
|
|
}
|
|
|
|
int
|
|
AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
|
|
{
|
|
const XMLNodeList& nlist = node.children();
|
|
const XMLProperty *prop;
|
|
LocaleGuard lg (X_("POSIX"));
|
|
boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
|
|
|
|
freeze ();
|
|
|
|
if (the_playlist) {
|
|
the_playlist->freeze ();
|
|
}
|
|
|
|
|
|
/* this will set all our State members and stuff controlled by the Region.
|
|
It should NOT send any changed signals - that is our responsibility.
|
|
*/
|
|
|
|
Region::_set_state (node, version, what_changed, false);
|
|
|
|
if ((prop = node.property ("scale-gain")) != 0) {
|
|
float a = atof (prop->value().c_str());
|
|
if (a != _scale_amplitude) {
|
|
_scale_amplitude = a;
|
|
what_changed.add (Properties::scale_amplitude);
|
|
}
|
|
}
|
|
|
|
/* Now find envelope description and other related child items */
|
|
|
|
_envelope->freeze ();
|
|
|
|
for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
|
|
XMLNode *child;
|
|
XMLProperty *prop;
|
|
|
|
child = (*niter);
|
|
|
|
if (child->name() == "Envelope") {
|
|
|
|
_envelope->clear ();
|
|
|
|
if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
|
|
set_default_envelope ();
|
|
}
|
|
|
|
_envelope->set_max_xval (_length);
|
|
_envelope->truncate_end (_length);
|
|
|
|
|
|
} else if (child->name() == "FadeIn") {
|
|
|
|
_fade_in->clear ();
|
|
|
|
if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
|
|
set_default_fade_in ();
|
|
} else {
|
|
XMLNode* grandchild = child->child ("AutomationList");
|
|
if (grandchild) {
|
|
_fade_in->set_state (*grandchild, version);
|
|
}
|
|
}
|
|
|
|
if ((prop = child->property ("active")) != 0) {
|
|
if (string_is_affirmative (prop->value())) {
|
|
set_fade_in_active (true);
|
|
} else {
|
|
set_fade_in_active (false);
|
|
}
|
|
}
|
|
|
|
} else if (child->name() == "FadeOut") {
|
|
|
|
_fade_out->clear ();
|
|
|
|
if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
|
|
set_default_fade_out ();
|
|
} else {
|
|
XMLNode* grandchild = child->child ("AutomationList");
|
|
if (grandchild) {
|
|
_fade_out->set_state (*grandchild, version);
|
|
}
|
|
}
|
|
|
|
if ((prop = child->property ("active")) != 0) {
|
|
if (string_is_affirmative (prop->value())) {
|
|
set_fade_out_active (true);
|
|
} else {
|
|
set_fade_out_active (false);
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
_envelope->thaw ();
|
|
thaw ();
|
|
|
|
if (send) {
|
|
send_change (what_changed);
|
|
}
|
|
|
|
if (the_playlist) {
|
|
the_playlist->thaw ();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
AudioRegion::set_property (const PropertyBase& prop)
|
|
{
|
|
DEBUG_TRACE (DEBUG::Properties, string_compose ("audio region %1 set property %2\n", _name.val(), prop.property_name()));
|
|
|
|
if (prop == Properties::envelope_active.id) {
|
|
bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
|
|
if (val != _envelope_active) {
|
|
_envelope_active = val;
|
|
return true;
|
|
}
|
|
} else if (prop == Properties::default_fade_in.id) {
|
|
bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
|
|
if (val != _default_fade_in) {
|
|
_default_fade_in = val;
|
|
return true;
|
|
}
|
|
} else if (prop == Properties::default_fade_out.id) {
|
|
bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
|
|
if (val != _default_fade_out) {
|
|
_default_fade_out = val;
|
|
return true;
|
|
}
|
|
} else if (prop == Properties::fade_in_active.id) {
|
|
bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
|
|
if (val != _fade_in_active) {
|
|
_fade_in_active = val;
|
|
return true;
|
|
}
|
|
} else if (prop == Properties::fade_out_active.id) {
|
|
bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
|
|
if (val != _fade_out_active) {
|
|
_fade_out_active = val;
|
|
return true;
|
|
}
|
|
} else if (prop == Properties::scale_amplitude.id) {
|
|
gain_t val = dynamic_cast<const PropertyTemplate<gain_t>*>(&prop)->val();
|
|
if (val != _scale_amplitude) {
|
|
_scale_amplitude = val;
|
|
return true;
|
|
}
|
|
} else {
|
|
return Region::set_property (prop);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
int
|
|
AudioRegion::set_state (const XMLNode& node, int version)
|
|
{
|
|
PropertyChange what_changed;
|
|
return _set_state (node, version, what_changed, true);
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_in_shape (FadeShape shape)
|
|
{
|
|
set_fade_in (shape, (nframes_t) _fade_in->back()->when);
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_out_shape (FadeShape shape)
|
|
{
|
|
set_fade_out (shape, (nframes_t) _fade_out->back()->when);
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
|
|
{
|
|
_fade_in->freeze ();
|
|
*_fade_in = *f;
|
|
_fade_in->thaw ();
|
|
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
|
|
{
|
|
_fade_in->freeze ();
|
|
_fade_in->clear ();
|
|
|
|
switch (shape) {
|
|
case Linear:
|
|
_fade_in->fast_simple_add (0.0, 0.0);
|
|
_fade_in->fast_simple_add (len, 1.0);
|
|
break;
|
|
|
|
case Fast:
|
|
_fade_in->fast_simple_add (0, 0);
|
|
_fade_in->fast_simple_add (len * 0.389401, 0.0333333);
|
|
_fade_in->fast_simple_add (len * 0.629032, 0.0861111);
|
|
_fade_in->fast_simple_add (len * 0.829493, 0.233333);
|
|
_fade_in->fast_simple_add (len * 0.9447, 0.483333);
|
|
_fade_in->fast_simple_add (len * 0.976959, 0.697222);
|
|
_fade_in->fast_simple_add (len, 1);
|
|
break;
|
|
|
|
case Slow:
|
|
_fade_in->fast_simple_add (0, 0);
|
|
_fade_in->fast_simple_add (len * 0.0207373, 0.197222);
|
|
_fade_in->fast_simple_add (len * 0.0645161, 0.525);
|
|
_fade_in->fast_simple_add (len * 0.152074, 0.802778);
|
|
_fade_in->fast_simple_add (len * 0.276498, 0.919444);
|
|
_fade_in->fast_simple_add (len * 0.481567, 0.980556);
|
|
_fade_in->fast_simple_add (len * 0.767281, 1);
|
|
_fade_in->fast_simple_add (len, 1);
|
|
break;
|
|
|
|
case LogA:
|
|
_fade_in->fast_simple_add (0, 0);
|
|
_fade_in->fast_simple_add (len * 0.0737327, 0.308333);
|
|
_fade_in->fast_simple_add (len * 0.246544, 0.658333);
|
|
_fade_in->fast_simple_add (len * 0.470046, 0.886111);
|
|
_fade_in->fast_simple_add (len * 0.652074, 0.972222);
|
|
_fade_in->fast_simple_add (len * 0.771889, 0.988889);
|
|
_fade_in->fast_simple_add (len, 1);
|
|
break;
|
|
|
|
case LogB:
|
|
_fade_in->fast_simple_add (0, 0);
|
|
_fade_in->fast_simple_add (len * 0.304147, 0.0694444);
|
|
_fade_in->fast_simple_add (len * 0.529954, 0.152778);
|
|
_fade_in->fast_simple_add (len * 0.725806, 0.333333);
|
|
_fade_in->fast_simple_add (len * 0.847926, 0.558333);
|
|
_fade_in->fast_simple_add (len * 0.919355, 0.730556);
|
|
_fade_in->fast_simple_add (len, 1);
|
|
break;
|
|
}
|
|
|
|
_fade_in->thaw ();
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
|
|
{
|
|
_fade_out->freeze ();
|
|
*_fade_out = *f;
|
|
_fade_out->thaw ();
|
|
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
|
|
{
|
|
_fade_out->freeze ();
|
|
_fade_out->clear ();
|
|
|
|
switch (shape) {
|
|
case Fast:
|
|
_fade_out->fast_simple_add (len * 0, 1);
|
|
_fade_out->fast_simple_add (len * 0.023041, 0.697222);
|
|
_fade_out->fast_simple_add (len * 0.0553, 0.483333);
|
|
_fade_out->fast_simple_add (len * 0.170507, 0.233333);
|
|
_fade_out->fast_simple_add (len * 0.370968, 0.0861111);
|
|
_fade_out->fast_simple_add (len * 0.610599, 0.0333333);
|
|
_fade_out->fast_simple_add (len * 1, 0);
|
|
break;
|
|
|
|
case LogA:
|
|
_fade_out->fast_simple_add (len * 0, 1);
|
|
_fade_out->fast_simple_add (len * 0.228111, 0.988889);
|
|
_fade_out->fast_simple_add (len * 0.347926, 0.972222);
|
|
_fade_out->fast_simple_add (len * 0.529954, 0.886111);
|
|
_fade_out->fast_simple_add (len * 0.753456, 0.658333);
|
|
_fade_out->fast_simple_add (len * 0.9262673, 0.308333);
|
|
_fade_out->fast_simple_add (len * 1, 0);
|
|
break;
|
|
|
|
case Slow:
|
|
_fade_out->fast_simple_add (len * 0, 1);
|
|
_fade_out->fast_simple_add (len * 0.305556, 1);
|
|
_fade_out->fast_simple_add (len * 0.548611, 0.991736);
|
|
_fade_out->fast_simple_add (len * 0.759259, 0.931129);
|
|
_fade_out->fast_simple_add (len * 0.918981, 0.68595);
|
|
_fade_out->fast_simple_add (len * 0.976852, 0.22865);
|
|
_fade_out->fast_simple_add (len * 1, 0);
|
|
break;
|
|
|
|
case LogB:
|
|
_fade_out->fast_simple_add (len * 0, 1);
|
|
_fade_out->fast_simple_add (len * 0.080645, 0.730556);
|
|
_fade_out->fast_simple_add (len * 0.277778, 0.289256);
|
|
_fade_out->fast_simple_add (len * 0.470046, 0.152778);
|
|
_fade_out->fast_simple_add (len * 0.695853, 0.0694444);
|
|
_fade_out->fast_simple_add (len * 1, 0);
|
|
break;
|
|
|
|
case Linear:
|
|
_fade_out->fast_simple_add (len * 0, 1);
|
|
_fade_out->fast_simple_add (len * 1, 0);
|
|
break;
|
|
}
|
|
|
|
_fade_out->thaw ();
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_in_length (framecnt_t len)
|
|
{
|
|
if (len > _length) {
|
|
len = _length - 1;
|
|
}
|
|
|
|
bool changed = _fade_in->extend_to (len);
|
|
|
|
if (changed) {
|
|
_default_fade_in = false;
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_out_length (framecnt_t len)
|
|
{
|
|
if (len > _length) {
|
|
len = _length - 1;
|
|
}
|
|
|
|
bool changed = _fade_out->extend_to (len);
|
|
|
|
if (changed) {
|
|
_default_fade_out = false;
|
|
send_change (PropertyChange (Properties::fade_out));
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_in_active (bool yn)
|
|
{
|
|
if (yn == _fade_in_active) {
|
|
return;
|
|
}
|
|
|
|
_fade_in_active = yn;
|
|
send_change (PropertyChange (Properties::fade_in_active));
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_fade_out_active (bool yn)
|
|
{
|
|
if (yn == _fade_out_active) {
|
|
return;
|
|
}
|
|
_fade_out_active = yn;
|
|
send_change (PropertyChange (Properties::fade_out_active));
|
|
}
|
|
|
|
bool
|
|
AudioRegion::fade_in_is_default () const
|
|
{
|
|
return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
|
|
}
|
|
|
|
bool
|
|
AudioRegion::fade_out_is_default () const
|
|
{
|
|
return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_default_fade_in ()
|
|
{
|
|
_fade_in_suspended = 0;
|
|
set_fade_in (Linear, 64);
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_default_fade_out ()
|
|
{
|
|
_fade_out_suspended = 0;
|
|
set_fade_out (Linear, 64);
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_default_fades ()
|
|
{
|
|
set_default_fade_in ();
|
|
set_default_fade_out ();
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_default_envelope ()
|
|
{
|
|
_envelope->freeze ();
|
|
_envelope->clear ();
|
|
_envelope->fast_simple_add (0, 1.0f);
|
|
_envelope->fast_simple_add (_length, 1.0f);
|
|
_envelope->thaw ();
|
|
}
|
|
|
|
void
|
|
AudioRegion::recompute_at_end ()
|
|
{
|
|
/* our length has changed. recompute a new final point by interpolating
|
|
based on the the existing curve.
|
|
*/
|
|
|
|
_envelope->freeze ();
|
|
_envelope->truncate_end (_length);
|
|
_envelope->set_max_xval (_length);
|
|
_envelope->thaw ();
|
|
|
|
if (_fade_in->back()->when > _length) {
|
|
_fade_in->extend_to (_length);
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
|
|
if (_fade_out->back()->when > _length) {
|
|
_fade_out->extend_to (_length);
|
|
send_change (PropertyChange (Properties::fade_out));
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::recompute_at_start ()
|
|
{
|
|
/* as above, but the shift was from the front */
|
|
|
|
_envelope->truncate_start (_length);
|
|
|
|
if (_fade_in->back()->when > _length) {
|
|
_fade_in->extend_to (_length);
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
|
|
if (_fade_out->back()->when > _length) {
|
|
_fade_out->extend_to (_length);
|
|
send_change (PropertyChange (Properties::fade_out));
|
|
}
|
|
}
|
|
|
|
int
|
|
AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
|
|
{
|
|
SourceList srcs;
|
|
string new_name;
|
|
int n = 0;
|
|
|
|
if (_sources.size() < 2) {
|
|
return 0;
|
|
}
|
|
|
|
for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
|
|
srcs.clear ();
|
|
srcs.push_back (*i);
|
|
|
|
new_name = _name;
|
|
|
|
if (_sources.size() == 2) {
|
|
if (n == 0) {
|
|
new_name += "-L";
|
|
} else {
|
|
new_name += "-R";
|
|
}
|
|
} else {
|
|
new_name += '-';
|
|
new_name += ('0' + n + 1);
|
|
}
|
|
|
|
/* create a copy with just one source. prevent if from being thought of as
|
|
"whole file" even if it covers the entire source file(s).
|
|
*/
|
|
|
|
PropertyList plist;
|
|
|
|
plist.add (Properties::start, _start.val());
|
|
plist.add (Properties::length, _length.val());
|
|
plist.add (Properties::name, new_name);
|
|
plist.add (Properties::layer, _layer.val());
|
|
|
|
v.push_back(RegionFactory::create (srcs, plist));
|
|
v.back()->set_whole_file (false);
|
|
|
|
++n;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
framecnt_t
|
|
AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
|
|
{
|
|
return audio_source()->read (buf, pos, cnt, channel);
|
|
}
|
|
|
|
int
|
|
AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
|
|
{
|
|
// TODO EXPORT
|
|
// const nframes_t blocksize = 4096;
|
|
// nframes_t to_read;
|
|
// int status = -1;
|
|
//
|
|
// spec.channels = _sources.size();
|
|
//
|
|
// if (spec.prepare (blocksize, session.frame_rate())) {
|
|
// goto out;
|
|
// }
|
|
//
|
|
// spec.pos = 0;
|
|
// spec.total_frames = _length;
|
|
//
|
|
// while (spec.pos < _length && !spec.stop) {
|
|
//
|
|
//
|
|
// /* step 1: interleave */
|
|
//
|
|
// to_read = min (_length - spec.pos, blocksize);
|
|
//
|
|
// if (spec.channels == 1) {
|
|
//
|
|
// if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
|
|
// goto out;
|
|
// }
|
|
//
|
|
// } else {
|
|
//
|
|
// Sample buf[blocksize];
|
|
//
|
|
// for (uint32_t chan = 0; chan < spec.channels; ++chan) {
|
|
//
|
|
// if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
|
|
// goto out;
|
|
// }
|
|
//
|
|
// for (nframes_t x = 0; x < to_read; ++x) {
|
|
// spec.dataF[chan+(x*spec.channels)] = buf[x];
|
|
// }
|
|
// }
|
|
// }
|
|
//
|
|
// if (spec.process (to_read)) {
|
|
// goto out;
|
|
// }
|
|
//
|
|
// spec.pos += to_read;
|
|
// spec.progress = (double) spec.pos /_length;
|
|
//
|
|
// }
|
|
//
|
|
// status = 0;
|
|
//
|
|
// out:
|
|
// spec.running = false;
|
|
// spec.status = status;
|
|
// spec.clear();
|
|
//
|
|
// return status;
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
AudioRegion::set_scale_amplitude (gain_t g)
|
|
{
|
|
boost::shared_ptr<Playlist> pl (playlist());
|
|
|
|
_scale_amplitude = g;
|
|
|
|
/* tell the diskstream we're in */
|
|
|
|
if (pl) {
|
|
pl->ContentsChanged();
|
|
}
|
|
|
|
/* tell everybody else */
|
|
|
|
send_change (PropertyChange (Properties::scale_amplitude));
|
|
}
|
|
|
|
void
|
|
AudioRegion::normalize_to (float target_dB)
|
|
{
|
|
const framecnt_t blocksize = 64 * 1024;
|
|
Sample buf[blocksize];
|
|
framepos_t fpos;
|
|
framepos_t fend;
|
|
framecnt_t to_read;
|
|
double maxamp = 0;
|
|
gain_t target = dB_to_coefficient (target_dB);
|
|
|
|
if (target == 1.0f) {
|
|
/* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
|
|
that we may have clipped.
|
|
*/
|
|
target -= FLT_EPSILON;
|
|
}
|
|
|
|
fpos = _start;
|
|
fend = _start + _length;
|
|
|
|
/* first pass: find max amplitude */
|
|
|
|
while (fpos < fend) {
|
|
|
|
uint32_t n;
|
|
|
|
to_read = min (fend - fpos, blocksize);
|
|
|
|
for (n = 0; n < n_channels(); ++n) {
|
|
|
|
/* read it in */
|
|
|
|
if (read_raw_internal (buf, fpos, to_read, 0) != to_read) {
|
|
return;
|
|
}
|
|
|
|
maxamp = compute_peak (buf, to_read, maxamp);
|
|
}
|
|
|
|
fpos += to_read;
|
|
};
|
|
|
|
if (maxamp == 0.0f) {
|
|
/* don't even try */
|
|
return;
|
|
}
|
|
|
|
if (maxamp == target) {
|
|
/* we can't do anything useful */
|
|
return;
|
|
}
|
|
|
|
/* compute scale factor */
|
|
|
|
_scale_amplitude = target/maxamp;
|
|
|
|
/* tell the diskstream we're in */
|
|
|
|
boost::shared_ptr<Playlist> pl (playlist());
|
|
|
|
if (pl) {
|
|
pl->ContentsChanged();
|
|
}
|
|
|
|
/* tell everybody else */
|
|
|
|
send_change (PropertyChange (Properties::scale_amplitude));
|
|
}
|
|
|
|
void
|
|
AudioRegion::fade_in_changed ()
|
|
{
|
|
send_change (PropertyChange (Properties::fade_in));
|
|
}
|
|
|
|
void
|
|
AudioRegion::fade_out_changed ()
|
|
{
|
|
send_change (PropertyChange (Properties::fade_out));
|
|
}
|
|
|
|
void
|
|
AudioRegion::envelope_changed ()
|
|
{
|
|
send_change (PropertyChange (Properties::envelope));
|
|
}
|
|
|
|
void
|
|
AudioRegion::suspend_fade_in ()
|
|
{
|
|
if (++_fade_in_suspended == 1) {
|
|
if (fade_in_is_default()) {
|
|
set_fade_in_active (false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::resume_fade_in ()
|
|
{
|
|
if (--_fade_in_suspended == 0 && _fade_in_suspended) {
|
|
set_fade_in_active (true);
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::suspend_fade_out ()
|
|
{
|
|
if (++_fade_out_suspended == 1) {
|
|
if (fade_out_is_default()) {
|
|
set_fade_out_active (false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
AudioRegion::resume_fade_out ()
|
|
{
|
|
if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
|
|
set_fade_out_active (true);
|
|
}
|
|
}
|
|
|
|
bool
|
|
AudioRegion::speed_mismatch (float sr) const
|
|
{
|
|
if (_sources.empty()) {
|
|
/* impossible, but ... */
|
|
return false;
|
|
}
|
|
|
|
float fsr = audio_source()->sample_rate();
|
|
|
|
return fsr != sr;
|
|
}
|
|
|
|
void
|
|
AudioRegion::source_offset_changed ()
|
|
{
|
|
/* XXX this fixes a crash that should not occur. It does occur
|
|
becauses regions are not being deleted when a session
|
|
is unloaded. That bug must be fixed.
|
|
*/
|
|
|
|
if (_sources.empty()) {
|
|
return;
|
|
}
|
|
|
|
boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
|
|
|
|
if (afs && afs->destructive()) {
|
|
// set_start (source()->natural_position(), this);
|
|
set_position (source()->natural_position(), this);
|
|
}
|
|
}
|
|
|
|
boost::shared_ptr<AudioSource>
|
|
AudioRegion::audio_source (uint32_t n) const
|
|
{
|
|
// Guaranteed to succeed (use a static cast for speed?)
|
|
return boost::dynamic_pointer_cast<AudioSource>(source(n));
|
|
}
|
|
|
|
int
|
|
AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
|
|
{
|
|
boost::shared_ptr<Playlist> pl = playlist();
|
|
|
|
if (!pl) {
|
|
return -1;
|
|
}
|
|
|
|
if (_valid_transients && !force_new) {
|
|
results = _transients;
|
|
return 0;
|
|
}
|
|
|
|
SourceList::iterator s;
|
|
|
|
for (s = _sources.begin() ; s != _sources.end(); ++s) {
|
|
if (!(*s)->has_been_analysed()) {
|
|
cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (s == _sources.end()) {
|
|
/* all sources are analyzed, merge data from each one */
|
|
|
|
for (s = _sources.begin() ; s != _sources.end(); ++s) {
|
|
|
|
/* find the set of transients within the bounds of this region */
|
|
|
|
AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
|
|
(*s)->transients.end(),
|
|
_start);
|
|
|
|
AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
|
|
(*s)->transients.end(),
|
|
_start + _length);
|
|
|
|
/* and add them */
|
|
|
|
results.insert (results.end(), low, high);
|
|
}
|
|
|
|
TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
|
|
|
|
/* translate all transients to current position */
|
|
|
|
for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
|
|
(*x) -= _start;
|
|
(*x) += _position;
|
|
}
|
|
|
|
_transients = results;
|
|
_valid_transients = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* no existing/complete transient info */
|
|
|
|
if (!Config->get_auto_analyse_audio()) {
|
|
pl->session().Dialog (_("\
|
|
You have requested an operation that requires audio analysis.\n\n\
|
|
You currently have \"auto-analyse-audio\" disabled, which means\n\
|
|
that transient data must be generated every time it is required.\n\n\
|
|
If you are doing work that will require transient data on a\n\
|
|
regular basis, you should probably enable \"auto-analyse-audio\"\n\
|
|
then quit ardour and restart."));
|
|
}
|
|
|
|
TransientDetector t (pl->session().frame_rate());
|
|
bool existing_results = !results.empty();
|
|
|
|
_transients.clear ();
|
|
_valid_transients = false;
|
|
|
|
for (uint32_t i = 0; i < n_channels(); ++i) {
|
|
|
|
AnalysisFeatureList these_results;
|
|
|
|
t.reset ();
|
|
|
|
if (t.run ("", this, i, these_results)) {
|
|
return -1;
|
|
}
|
|
|
|
/* translate all transients to give absolute position */
|
|
|
|
for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
|
|
(*i) += _position;
|
|
}
|
|
|
|
/* merge */
|
|
|
|
_transients.insert (_transients.end(), these_results.begin(), these_results.end());
|
|
}
|
|
|
|
if (!results.empty()) {
|
|
if (existing_results) {
|
|
|
|
/* merge our transients into the existing ones, then clean up
|
|
those.
|
|
*/
|
|
|
|
results.insert (results.end(), _transients.begin(), _transients.end());
|
|
TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
|
|
}
|
|
|
|
/* make sure ours are clean too */
|
|
|
|
TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
|
|
|
|
} else {
|
|
|
|
TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
|
|
results = _transients;
|
|
}
|
|
|
|
_valid_transients = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Find areas of `silence' within a region.
|
|
*
|
|
* @param threshold Threshold below which signal is considered silence (as a sample value)
|
|
* @param min_length Minimum length of silent period to be reported.
|
|
* @return Silent periods; first of pair is the offset within the region, second is the length of the period
|
|
*/
|
|
|
|
std::list<std::pair<frameoffset_t, framecnt_t> >
|
|
AudioRegion::find_silence (Sample threshold, framecnt_t min_length) const
|
|
{
|
|
framecnt_t const block_size = 64 * 1024;
|
|
Sample loudest[block_size];
|
|
Sample buf[block_size];
|
|
|
|
framepos_t pos = _start;
|
|
framepos_t const end = _start + _length - 1;
|
|
|
|
std::list<std::pair<frameoffset_t, framecnt_t> > silent_periods;
|
|
|
|
bool in_silence = false;
|
|
frameoffset_t silence_start = 0;
|
|
bool silence;
|
|
|
|
while (pos < end) {
|
|
|
|
/* fill `loudest' with the loudest absolute sample at each instant, across all channels */
|
|
memset (loudest, 0, sizeof (Sample) * block_size);
|
|
for (uint32_t n = 0; n < n_channels(); ++n) {
|
|
|
|
read_raw_internal (buf, pos, block_size, n);
|
|
for (framecnt_t i = 0; i < block_size; ++i) {
|
|
loudest[i] = max (loudest[i], abs (buf[i]));
|
|
}
|
|
}
|
|
|
|
/* now look for silence */
|
|
for (framecnt_t i = 0; i < block_size; ++i) {
|
|
silence = abs (loudest[i]) < threshold;
|
|
if (silence && !in_silence) {
|
|
/* non-silence to silence */
|
|
in_silence = true;
|
|
silence_start = pos + i;
|
|
} else if (!silence && in_silence) {
|
|
/* silence to non-silence */
|
|
in_silence = false;
|
|
if (pos + i - 1 - silence_start >= min_length) {
|
|
silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
|
|
}
|
|
}
|
|
}
|
|
|
|
pos += block_size;
|
|
}
|
|
|
|
if (in_silence && end - 1 - silence_start >= min_length) {
|
|
/* last block was silent, so finish off the last period */
|
|
silent_periods.push_back (std::make_pair (silence_start, end));
|
|
}
|
|
|
|
return silent_periods;
|
|
}
|
|
|
|
|
|
|
|
extern "C" {
|
|
|
|
int region_read_peaks_from_c (void *arg, uint32_t npeaks, uint32_t start, uint32_t cnt, intptr_t data, uint32_t n_chan, double samples_per_unit)
|
|
{
|
|
return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
|
|
}
|
|
|
|
uint32_t region_length_from_c (void *arg)
|
|
{
|
|
|
|
return ((AudioRegion *) arg)->length();
|
|
}
|
|
|
|
uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
|
|
{
|
|
return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;
|
|
}
|
|
|
|
} /* extern "C" */
|