2 Copyright (C) 2000-2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <boost/scoped_array.hpp>
29 #include <glibmm/thread.h>
31 #include "pbd/basename.h"
32 #include "pbd/xml++.h"
33 #include "pbd/stacktrace.h"
34 #include "pbd/enumwriter.h"
35 #include "pbd/convert.h"
37 #include "evoral/Curve.hpp"
39 #include "ardour/audioregion.h"
40 #include "ardour/debug.h"
41 #include "ardour/session.h"
42 #include "ardour/dB.h"
43 #include "ardour/playlist.h"
44 #include "ardour/audiofilesource.h"
45 #include "ardour/region_factory.h"
46 #include "ardour/runtime_functions.h"
47 #include "ardour/transient_detector.h"
48 #include "ardour/progress.h"
54 using namespace ARDOUR;
58 namespace Properties {
59 PBD::PropertyDescriptor<bool> envelope_active;
60 PBD::PropertyDescriptor<bool> default_fade_in;
61 PBD::PropertyDescriptor<bool> default_fade_out;
62 PBD::PropertyDescriptor<bool> fade_in_active;
63 PBD::PropertyDescriptor<bool> fade_out_active;
64 PBD::PropertyDescriptor<float> scale_amplitude;
69 AudioRegion::make_property_quarks ()
71 Properties::envelope_active.property_id = g_quark_from_static_string (X_("envelope-active"));
72 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for envelope-active = %1\n", Properties::envelope_active.property_id));
73 Properties::default_fade_in.property_id = g_quark_from_static_string (X_("default-fade-in"));
74 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-in = %1\n", Properties::default_fade_in.property_id));
75 Properties::default_fade_out.property_id = g_quark_from_static_string (X_("default-fade-out"));
76 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-out = %1\n", Properties::default_fade_out.property_id));
77 Properties::fade_in_active.property_id = g_quark_from_static_string (X_("fade-in-active"));
78 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-in-active = %1\n", Properties::fade_in_active.property_id));
79 Properties::fade_out_active.property_id = g_quark_from_static_string (X_("fade-out-active"));
80 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-out-active = %1\n", Properties::fade_out_active.property_id));
81 Properties::scale_amplitude.property_id = g_quark_from_static_string (X_("scale-amplitude"));
82 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for scale-amplitude = %1\n", Properties::scale_amplitude.property_id));
86 AudioRegion::register_properties ()
88 /* no need to register parent class properties */
90 add_property (_envelope_active);
91 add_property (_default_fade_in);
92 add_property (_default_fade_out);
93 add_property (_fade_in_active);
94 add_property (_fade_out_active);
95 add_property (_scale_amplitude);
98 #define AUDIOREGION_STATE_DEFAULT \
99 _envelope_active (Properties::envelope_active, false) \
100 , _default_fade_in (Properties::default_fade_in, true) \
101 , _default_fade_out (Properties::default_fade_out, true) \
102 , _fade_in_active (Properties::fade_in_active, true) \
103 , _fade_out_active (Properties::fade_out_active, true) \
104 , _scale_amplitude (Properties::scale_amplitude, 1.0)
106 #define AUDIOREGION_COPY_STATE(other) \
107 _envelope_active (Properties::envelope_active, other->_envelope_active) \
108 , _default_fade_in (Properties::default_fade_in, other->_default_fade_in) \
109 , _default_fade_out (Properties::default_fade_out, other->_default_fade_out) \
110 , _fade_in_active (Properties::fade_in_active, other->_fade_in_active) \
111 , _fade_out_active (Properties::fade_out_active, other->_fade_out_active) \
112 , _scale_amplitude (Properties::scale_amplitude, other->_scale_amplitude)
113 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
118 register_properties ();
120 suspend_property_changes();
121 set_default_fades ();
122 set_default_envelope ();
123 resume_property_changes();
125 listen_to_my_curves ();
126 connect_to_analysis_changed ();
127 connect_to_header_position_offset_changed ();
130 /** Constructor for use by derived types only */
131 AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
132 : Region (s, start, len, name, DataType::AUDIO)
133 , AUDIOREGION_STATE_DEFAULT
135 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
136 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
137 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
138 , _fade_in_suspended (0)
139 , _fade_out_suspended (0)
140 , _fade_in_is_xfade (false)
141 , _fade_out_is_xfade (false)
144 assert (_sources.size() == _master_sources.size());
147 /** Basic AudioRegion constructor */
148 AudioRegion::AudioRegion (const SourceList& srcs)
150 , AUDIOREGION_STATE_DEFAULT
151 , _automatable(srcs[0]->session())
152 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
153 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
154 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
155 , _fade_in_suspended (0)
156 , _fade_out_suspended (0)
157 , _fade_in_is_xfade (false)
158 , _fade_out_is_xfade (false)
161 assert (_sources.size() == _master_sources.size());
164 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
166 , AUDIOREGION_COPY_STATE (other)
167 , _automatable (other->session())
168 , _fade_in (new AutomationList (*other->_fade_in))
169 , _fade_out (new AutomationList (*other->_fade_out))
170 /* As far as I can see, the _envelope's times are relative to region position, and have nothing
171 to do with sources (and hence _start). So when we copy the envelope, we just use the supplied offset.
173 , _envelope (new AutomationList (*other->_envelope, 0, other->_length))
174 , _fade_in_suspended (0)
175 , _fade_out_suspended (0)
176 , _fade_in_is_xfade (false)
177 , _fade_out_is_xfade (false)
179 /* don't use init here, because we got fade in/out from the other region
181 register_properties ();
182 listen_to_my_curves ();
183 connect_to_analysis_changed ();
184 connect_to_header_position_offset_changed ();
186 assert(_type == DataType::AUDIO);
187 assert (_sources.size() == _master_sources.size());
190 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, framecnt_t offset)
191 : Region (other, offset)
192 , AUDIOREGION_COPY_STATE (other)
193 , _automatable (other->session())
194 , _fade_in (new AutomationList (*other->_fade_in))
195 , _fade_out (new AutomationList (*other->_fade_out))
196 /* As far as I can see, the _envelope's times are relative to region position, and have nothing
197 to do with sources (and hence _start). So when we copy the envelope, we just use the supplied offset.
199 , _envelope (new AutomationList (*other->_envelope, offset, other->_length))
200 , _fade_in_suspended (0)
201 , _fade_out_suspended (0)
202 , _fade_in_is_xfade (false)
203 , _fade_out_is_xfade (false)
205 /* don't use init here, because we got fade in/out from the other region
207 register_properties ();
208 listen_to_my_curves ();
209 connect_to_analysis_changed ();
210 connect_to_header_position_offset_changed ();
212 assert(_type == DataType::AUDIO);
213 assert (_sources.size() == _master_sources.size());
216 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
217 : Region (boost::static_pointer_cast<const Region>(other), srcs)
218 , AUDIOREGION_COPY_STATE (other)
219 , _automatable (other->session())
220 , _fade_in (new AutomationList (*other->_fade_in))
221 , _fade_out (new AutomationList (*other->_fade_out))
222 , _envelope (new AutomationList (*other->_envelope))
223 , _fade_in_suspended (0)
224 , _fade_out_suspended (0)
225 , _fade_in_is_xfade (false)
226 , _fade_out_is_xfade (false)
228 /* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
230 register_properties ();
232 listen_to_my_curves ();
233 connect_to_analysis_changed ();
234 connect_to_header_position_offset_changed ();
236 assert (_sources.size() == _master_sources.size());
239 AudioRegion::AudioRegion (SourceList& srcs)
241 , AUDIOREGION_STATE_DEFAULT
242 , _automatable(srcs[0]->session())
243 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
244 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
245 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
246 , _fade_in_suspended (0)
247 , _fade_out_suspended (0)
248 , _fade_in_is_xfade (false)
249 , _fade_out_is_xfade (false)
253 assert(_type == DataType::AUDIO);
254 assert (_sources.size() == _master_sources.size());
257 AudioRegion::~AudioRegion ()
262 AudioRegion::post_set (const PropertyChange& /*ignored*/)
265 _sync_position = _start;
268 /* return to default fades if the existing ones are too long */
270 if (_left_of_split) {
271 if (_fade_in->back()->when >= _length) {
272 set_default_fade_in ();
274 set_default_fade_out ();
275 _left_of_split = false;
278 if (_right_of_split) {
279 if (_fade_out->back()->when >= _length) {
280 set_default_fade_out ();
283 set_default_fade_in ();
284 _right_of_split = false;
287 /* If _length changed, adjust our gain envelope accordingly */
288 _envelope->truncate_end (_length);
292 AudioRegion::connect_to_analysis_changed ()
294 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
295 (*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
300 AudioRegion::connect_to_header_position_offset_changed ()
302 set<boost::shared_ptr<Source> > unique_srcs;
304 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
306 /* connect only once to HeaderPositionOffsetChanged, even if sources are replicated
309 if (unique_srcs.find (*i) == unique_srcs.end ()) {
310 unique_srcs.insert (*i);
311 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
313 afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
320 AudioRegion::listen_to_my_curves ()
322 _envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
323 _fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
324 _fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
328 AudioRegion::set_envelope_active (bool yn)
330 if (envelope_active() != yn) {
331 _envelope_active = yn;
332 send_change (PropertyChange (Properties::envelope_active));
337 AudioRegion::read_peaks (PeakData *buf, framecnt_t npeaks, framecnt_t offset, framecnt_t cnt, uint32_t chan_n, double samples_per_unit) const
339 if (chan_n >= _sources.size()) {
343 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
346 if (_scale_amplitude != 1.0f) {
347 for (framecnt_t n = 0; n < npeaks; ++n) {
348 buf[n].max *= _scale_amplitude;
349 buf[n].min *= _scale_amplitude;
357 AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
359 /* raw read, no fades, no gain, nada */
360 /* XXX: xfade: passes no mixbuf... */
361 return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, ReadOps (0));
365 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
366 framepos_t position, framecnt_t cnt, uint32_t chan_n) const
368 /* regular diskstream/butler read complete with fades etc */
369 return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
370 position, cnt, chan_n, ReadOps (~0));
374 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
375 framepos_t position, framecnt_t cnt, uint32_t chan_n) const
377 /* do not read gain/scaling/fades and do not count this disk i/o in statistics */
381 return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
382 buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, ReadOps (0));
385 /** @param position Position within the session to read from.
386 * @param cnt Number of frames to read.
389 AudioRegion::_read_at (const SourceList& srcs, framecnt_t limit,
390 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
396 /* We are reading data from this region into buf (possibly via mixdown_buffer).
397 The caller has verified that we cover the desired section.
400 /* See doc/region_read.svg for a drawing which might help to explain
406 if (n_channels() == 0) {
410 if (muted() && rops != ReadOpsNone) {
411 return 0; /* read nothing */
415 /* WORK OUT WHERE TO GET DATA FROM */
419 assert (position >= _position);
420 frameoffset_t const internal_offset = position - _position;
422 if (internal_offset >= limit) {
423 return 0; /* read nothing */
426 if ((to_read = min (cnt, limit - internal_offset)) == 0) {
427 return 0; /* read nothing */
431 /* COMPUTE DETAILS OF ANY FADES INVOLVED IN THIS READ */
433 /* Amount of fade in that we are dealing with in this read */
434 framecnt_t fade_in_limit = 0;
436 /* Offset from buf / mixdown_buffer of the start
437 of any fade out that we are dealing with
439 frameoffset_t fade_out_offset = 0;
441 /* Amount of fade in that we are dealing with in this read */
442 framecnt_t fade_out_limit = 0;
444 framecnt_t fade_interval_start = 0;
446 if (rops & ReadOpsFades) {
450 if (_fade_in_active && _session.config.get_use_region_fades()) {
452 framecnt_t fade_in_length = (framecnt_t) _fade_in->back()->when;
454 /* see if this read is within the fade in */
456 if (internal_offset < fade_in_length) {
457 fade_in_limit = min (to_read, fade_in_length - internal_offset);
463 if (_fade_out_active && _session.config.get_use_region_fades()) {
465 /* see if some part of this read is within the fade out */
467 /* ................. >| REGION
473 limit - fade_out_length
476 ^internal_offset + to_read
478 we need the intersection of [internal_offset,internal_offset+to_read] with
479 [limit - fade_out_length, limit]
484 fade_interval_start = max (internal_offset, limit - framecnt_t (_fade_out->back()->when));
485 framecnt_t fade_interval_end = min(internal_offset + to_read, limit);
487 if (fade_interval_end > fade_interval_start) {
488 /* (part of the) the fade out is in this buffer */
489 fade_out_limit = fade_interval_end - fade_interval_start;
490 fade_out_offset = fade_interval_start - internal_offset;
495 /* READ DATA FROM THE SOURCE INTO mixdown_buffer.
496 We can never read directly into buf, since it may contain data
497 from a transparent region `below' this one in the stack; we
501 if (chan_n < n_channels()) {
503 boost::shared_ptr<AudioSource> src = boost::dynamic_pointer_cast<AudioSource> (srcs[chan_n]);
504 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
505 return 0; /* "read nothing" */
510 /* track is N-channel, this region has fewer channels; silence the ones
514 if (Config->get_replicate_missing_region_channels()) {
515 /* track is N-channel, this region has less channels, so use a relevant channel
518 uint32_t channel = n_channels() % chan_n;
519 boost::shared_ptr<AudioSource> src = boost::dynamic_pointer_cast<AudioSource> (srcs[channel]);
521 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
522 return 0; /* "read nothing" */
527 /* APPLY REGULAR GAIN CURVES AND SCALING TO mixdown_buffer */
529 if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
530 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
532 if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
533 for (framecnt_t n = 0; n < to_read; ++n) {
534 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
537 for (framecnt_t n = 0; n < to_read; ++n) {
538 mixdown_buffer[n] *= gain_buffer[n];
541 } else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
542 apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
546 /* APPLY FADES TO THE DATA IN mixdown_buffer AND MIX THE RESULTS INTO
547 * buf. The key things to realize here: (1) the fade being applied is
548 * (as of April 26th 2012) just the inverse of the fade in curve (2)
549 * "buf" contains data from lower regions already. So this operation
550 * fades out the existing material.
553 if (fade_in_limit != 0) {
554 if (_inverse_fade_in) {
556 /* explicit inverse fade in curve (e.g. for constant
557 * power), so we have to fetch it.
560 _inverse_fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
562 /* Fade the data from lower layers out */
563 for (framecnt_t n = 0; n < fade_in_limit; ++n) {
564 buf[n] *= gain_buffer[n];
567 /* refill gain buffer with the fade in */
569 _fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
573 /* no explicit inverse fade in, so just use (1 - fade
574 * in) for the fade out of lower layers
577 _fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
579 for (framecnt_t n = 0; n < fade_in_limit; ++n) {
580 buf[n] *= 1 - gain_buffer[n];
584 /* Mix our newly-read data in, with the fade */
585 for (framecnt_t n = 0; n < fade_in_limit; ++n) {
586 buf[n] += mixdown_buffer[n] * gain_buffer[n];
590 if (fade_out_limit != 0) {
592 framecnt_t const curve_offset = fade_interval_start - (limit - _fade_out->back()->when);
594 if (_inverse_fade_out) {
596 _inverse_fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
598 /* Fade the data from lower levels out */
599 for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
600 buf[m] *= gain_buffer[n];
603 /* fetch the actual fade out */
605 _fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
609 /* no explicit inverse fade out, so just use (1 - fade
610 * out) for the fade in of lower layers
613 _fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
615 for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
616 buf[m] *= 1 - gain_buffer[n];
620 /* Mix our newly-read data out, with the fade */
621 for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
622 buf[m] += mixdown_buffer[m] * gain_buffer[n];
627 /* MIX THE REGION BODY FROM mixdown_buffer INTO buf */
629 mix_buffers_no_gain (buf + fade_in_limit, mixdown_buffer + fade_in_limit, to_read - fade_in_limit - fade_out_limit);
635 AudioRegion::state ()
637 XMLNode& node (Region::state ());
640 LocaleGuard lg (X_("POSIX"));
642 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
643 node.add_property ("channels", buf);
645 Stateful::add_properties (node);
647 child = node.add_child ("Envelope");
649 bool default_env = false;
651 // If there are only two points, the points are in the start of the region and the end of the region
652 // so, if they are both at 1.0f, that means the default region.
654 if (_envelope->size() == 2 &&
655 _envelope->front()->value == 1.0f &&
656 _envelope->back()->value==1.0f) {
657 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
663 child->add_property ("default", "yes");
665 child->add_child_nocopy (_envelope->get_state ());
668 child = node.add_child (X_("FadeIn"));
670 if (_default_fade_in) {
671 child->add_property ("default", "yes");
673 child->add_child_nocopy (_fade_in->get_state ());
676 child = node.add_child (X_("FadeOut"));
678 if (_default_fade_out) {
679 child->add_property ("default", "yes");
681 child->add_child_nocopy (_fade_out->get_state ());
688 AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
690 const XMLNodeList& nlist = node.children();
691 const XMLProperty *prop;
692 LocaleGuard lg (X_("POSIX"));
693 boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
695 suspend_property_changes ();
698 the_playlist->freeze ();
702 /* this will set all our State members and stuff controlled by the Region.
703 It should NOT send any changed signals - that is our responsibility.
706 Region::_set_state (node, version, what_changed, false);
708 if ((prop = node.property ("scale-gain")) != 0) {
709 float a = atof (prop->value().c_str());
710 if (a != _scale_amplitude) {
711 _scale_amplitude = a;
712 what_changed.add (Properties::scale_amplitude);
716 /* Now find envelope description and other related child items */
718 _envelope->freeze ();
720 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
726 if (child->name() == "Envelope") {
730 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
731 set_default_envelope ();
734 _envelope->truncate_end (_length);
737 } else if (child->name() == "FadeIn") {
741 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
742 set_default_fade_in ();
744 XMLNode* grandchild = child->child ("AutomationList");
746 _fade_in->set_state (*grandchild, version);
750 if ((prop = child->property ("active")) != 0) {
751 if (string_is_affirmative (prop->value())) {
752 set_fade_in_active (true);
754 set_fade_in_active (false);
758 } else if (child->name() == "FadeOut") {
762 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
763 set_default_fade_out ();
765 XMLNode* grandchild = child->child ("AutomationList");
767 _fade_out->set_state (*grandchild, version);
771 if ((prop = child->property ("active")) != 0) {
772 if (string_is_affirmative (prop->value())) {
773 set_fade_out_active (true);
775 set_fade_out_active (false);
783 resume_property_changes ();
786 send_change (what_changed);
790 the_playlist->thaw ();
797 AudioRegion::set_state (const XMLNode& node, int version)
799 PropertyChange what_changed;
800 return _set_state (node, version, what_changed, true);
804 AudioRegion::set_fade_in_shape (FadeShape shape)
806 set_fade_in (shape, (framecnt_t) _fade_in->back()->when);
810 AudioRegion::set_fade_out_shape (FadeShape shape)
812 set_fade_out (shape, (framecnt_t) _fade_out->back()->when);
816 AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
822 send_change (PropertyChange (Properties::fade_in));
826 AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
833 _fade_in->fast_simple_add (0.0, 0.0);
834 _fade_in->fast_simple_add (len, 1.0);
835 _inverse_fade_in.reset ();
839 _fade_in->fast_simple_add (0, 0);
840 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
841 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
842 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
843 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
844 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
845 _fade_in->fast_simple_add (len, 1);
846 _inverse_fade_in.reset ();
850 _fade_in->fast_simple_add (0, 0);
851 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
852 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
853 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
854 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
855 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
856 _fade_in->fast_simple_add (len * 0.767281, 1);
857 _fade_in->fast_simple_add (len, 1);
858 _inverse_fade_in.reset ();
862 _fade_in->fast_simple_add (0, 0);
863 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
864 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
865 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
866 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
867 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
868 _fade_in->fast_simple_add (len, 1);
869 _inverse_fade_in.reset ();
873 _fade_in->fast_simple_add (0, 0);
874 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
875 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
876 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
877 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
878 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
879 _fade_in->fast_simple_add (len, 1);
880 _inverse_fade_in.reset ();
883 case FadeConstantPowerMinus3dB:
884 _fade_in->fast_simple_add (0.0, 0.0);
885 _fade_in->fast_simple_add ((len * 0.166667), 0.282192);
886 _fade_in->fast_simple_add ((len * 0.333333), 0.518174);
887 _fade_in->fast_simple_add ((len * 0.500000), 0.707946);
888 _fade_in->fast_simple_add ((len * 0.666667), 0.851507);
889 _fade_in->fast_simple_add ((len * 0.833333), 0.948859);
890 _fade_in->fast_simple_add (len, 1.0);
892 /* setup complementary fade out for lower layers */
894 if (!_inverse_fade_in) {
895 _inverse_fade_in.reset (new AutomationList (Evoral::Parameter (FadeInAutomation)));
898 _inverse_fade_in->clear ();
899 _inverse_fade_in->fast_simple_add (0.0, 1.0);
900 _inverse_fade_in->fast_simple_add ((len * 0.166667), 0.948859);
901 _inverse_fade_in->fast_simple_add ((len * 0.333333), 0.851507);
902 _inverse_fade_in->fast_simple_add ((len * 0.500000), 0.707946);
903 _inverse_fade_in->fast_simple_add ((len * 0.666667), 0.518174);
904 _inverse_fade_in->fast_simple_add ((len * 0.833333), 0.282192);
905 _inverse_fade_in->fast_simple_add (len, 0.0);
909 case FadeConstantPowerMinus6dB:
910 _fade_in->fast_simple_add (0.0, 0.0);
911 _fade_in->fast_simple_add ((len * 0.166667), 0.166366);
912 _fade_in->fast_simple_add ((len * 0.333333), 0.332853);
913 _fade_in->fast_simple_add ((len * 0.500000), 0.499459);
914 _fade_in->fast_simple_add ((len * 0.666667), 0.666186);
915 _fade_in->fast_simple_add ((len * 0.833333), 0.833033);
916 _fade_in->fast_simple_add (len, 1.0);
918 /* setup complementary fade out for lower layers */
920 if (!_inverse_fade_in) {
921 _inverse_fade_in.reset (new AutomationList (Evoral::Parameter (FadeInAutomation)));
924 _inverse_fade_in->clear ();
925 _inverse_fade_in->fast_simple_add (0.0, 1.0);
926 _inverse_fade_in->fast_simple_add ((len * 0.166667), 0.833033);
927 _inverse_fade_in->fast_simple_add ((len * 0.333333), 0.666186);
928 _inverse_fade_in->fast_simple_add ((len * 0.500000), 0.499459);
929 _inverse_fade_in->fast_simple_add ((len * 0.666667), 0.332853);
930 _inverse_fade_in->fast_simple_add ((len * 0.833333), 0.166366);
931 _inverse_fade_in->fast_simple_add (len, 0.0);
937 send_change (PropertyChange (Properties::fade_in));
941 AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
943 _fade_out->freeze ();
947 send_change (PropertyChange (Properties::fade_in));
951 AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
953 _fade_out->freeze ();
958 _fade_out->fast_simple_add (0.0, 1.0);
959 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
960 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
961 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
962 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
963 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
964 _fade_out->fast_simple_add (1.0, 0.0);
965 _inverse_fade_out.reset ();
969 _fade_out->fast_simple_add (0, 1.0);
970 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
971 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
972 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
973 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
974 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
975 _fade_out->fast_simple_add (len, 0.0);
976 _inverse_fade_out.reset ();
980 _fade_out->fast_simple_add (0.0, 1.0);
981 _fade_out->fast_simple_add (len * 0.305556, 1);
982 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
983 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
984 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
985 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
986 _fade_out->fast_simple_add (len, 0.0);
987 _inverse_fade_out.reset ();
991 _fade_out->fast_simple_add (0.0, 1.0);
992 _fade_out->fast_simple_add (len * 0.080645, 0.730556);
993 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
994 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
995 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
996 _fade_out->fast_simple_add (len, 0.0);
997 _inverse_fade_out.reset ();
1001 _fade_out->fast_simple_add (0.0, 1.0);
1002 _fade_out->fast_simple_add (len, 0.0);
1003 _inverse_fade_out.reset ();
1006 case FadeConstantPowerMinus3dB:
1007 _fade_out->fast_simple_add (0.0, 1.0);
1008 _fade_out->fast_simple_add ((len * 0.166667), 0.948859);
1009 _fade_out->fast_simple_add ((len * 0.333333), 0.851507);
1010 _fade_out->fast_simple_add ((len * 0.500000), 0.707946);
1011 _fade_out->fast_simple_add ((len * 0.666667), 0.518174);
1012 _fade_out->fast_simple_add ((len * 0.833333), 0.282192);
1013 _fade_out->fast_simple_add (len, 0.0);
1015 /* setup complementary fade in for lower layers */
1017 if (!_inverse_fade_out) {
1018 _inverse_fade_out.reset (new AutomationList (Evoral::Parameter (FadeInAutomation)));
1021 _inverse_fade_out->clear ();
1022 _inverse_fade_out->fast_simple_add (0.0, 0.0);
1023 _inverse_fade_out->fast_simple_add ((len * 0.166667), 0.166366);
1024 _inverse_fade_out->fast_simple_add ((len * 0.333333), 0.332853);
1025 _inverse_fade_out->fast_simple_add ((len * 0.500000), 0.499459);
1026 _inverse_fade_out->fast_simple_add ((len * 0.666667), 0.666186);
1027 _inverse_fade_out->fast_simple_add ((len * 0.833333), 0.833033);
1028 _inverse_fade_out->fast_simple_add (len, 1.0);
1032 case FadeConstantPowerMinus6dB:
1033 _fade_out->fast_simple_add (0.0, 1.0);
1034 _fade_out->fast_simple_add ((len * 0.166667), 0.833033);
1035 _fade_out->fast_simple_add ((len * 0.333333), 0.666186);
1036 _fade_out->fast_simple_add ((len * 0.500000), 0.499459);
1037 _fade_out->fast_simple_add ((len * 0.666667), 0.332853);
1038 _fade_out->fast_simple_add ((len * 0.833333), 0.166366);
1039 _fade_out->fast_simple_add (len, 0.0);
1041 /* setup complementary fade in for lower layers */
1043 if (!_inverse_fade_out) {
1044 _inverse_fade_out.reset (new AutomationList (Evoral::Parameter (FadeInAutomation)));
1047 _inverse_fade_out->clear ();
1048 _inverse_fade_out->fast_simple_add (0.0, 0.0);
1049 _inverse_fade_out->fast_simple_add ((len * 0.166667), 0.166366);
1050 _inverse_fade_out->fast_simple_add ((len * 0.333333), 0.332853);
1051 _inverse_fade_out->fast_simple_add ((len * 0.500000), 0.499459);
1052 _inverse_fade_out->fast_simple_add ((len * 0.666667), 0.666186);
1053 _inverse_fade_out->fast_simple_add ((len * 0.833333), 0.833033);
1054 _inverse_fade_out->fast_simple_add (len, 1.0);
1060 send_change (PropertyChange (Properties::fade_in));
1064 AudioRegion::set_fade_in_length (framecnt_t len)
1066 if (len > _length) {
1070 bool changed = _fade_in->extend_to (len);
1073 _default_fade_in = false;
1074 send_change (PropertyChange (Properties::fade_in));
1079 AudioRegion::set_fade_out_length (framecnt_t len)
1081 if (len > _length) {
1085 bool changed = _fade_out->extend_to (len);
1088 _default_fade_out = false;
1089 send_change (PropertyChange (Properties::fade_out));
1094 AudioRegion::set_fade_in_active (bool yn)
1096 if (yn == _fade_in_active) {
1100 _fade_in_active = yn;
1101 send_change (PropertyChange (Properties::fade_in_active));
1105 AudioRegion::set_fade_out_active (bool yn)
1107 if (yn == _fade_out_active) {
1110 _fade_out_active = yn;
1111 send_change (PropertyChange (Properties::fade_out_active));
1115 AudioRegion::fade_in_is_default () const
1117 return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
1121 AudioRegion::fade_out_is_default () const
1123 return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
1127 AudioRegion::set_default_fade_in ()
1129 _fade_in_suspended = 0;
1130 _fade_in_is_xfade = false;
1131 set_fade_in (FadeLinear, 64);
1135 AudioRegion::set_default_fade_out ()
1137 _fade_out_suspended = 0;
1138 _fade_out_is_xfade = false;
1139 set_fade_out (FadeLinear, 64);
1143 AudioRegion::set_default_fades ()
1145 set_default_fade_in ();
1146 set_default_fade_out ();
1150 AudioRegion::set_default_envelope ()
1152 _envelope->freeze ();
1153 _envelope->clear ();
1154 _envelope->fast_simple_add (0, 1.0f);
1155 _envelope->fast_simple_add (_length, 1.0f);
1160 AudioRegion::recompute_at_end ()
1162 /* our length has changed. recompute a new final point by interpolating
1163 based on the the existing curve.
1166 _envelope->freeze ();
1167 _envelope->truncate_end (_length);
1170 suspend_property_changes();
1172 if (_left_of_split) {
1173 set_default_fade_out ();
1174 _left_of_split = false;
1175 } else if (_fade_out->back()->when > _length) {
1176 _fade_out->extend_to (_length);
1177 send_change (PropertyChange (Properties::fade_out));
1180 if (_fade_in->back()->when > _length) {
1181 _fade_in->extend_to (_length);
1182 send_change (PropertyChange (Properties::fade_in));
1185 resume_property_changes();
1189 AudioRegion::recompute_at_start ()
1191 /* as above, but the shift was from the front */
1193 _envelope->truncate_start (_length);
1195 suspend_property_changes();
1197 if (_right_of_split) {
1198 set_default_fade_in ();
1199 _right_of_split = false;
1200 } else if (_fade_in->back()->when > _length) {
1201 _fade_in->extend_to (_length);
1202 send_change (PropertyChange (Properties::fade_in));
1205 if (_fade_out->back()->when > _length) {
1206 _fade_out->extend_to (_length);
1207 send_change (PropertyChange (Properties::fade_out));
1210 resume_property_changes();
1214 AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
1220 if (_sources.size() < 2) {
1224 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
1226 srcs.push_back (*i);
1230 if (_sources.size() == 2) {
1238 new_name += ('0' + n + 1);
1241 /* create a copy with just one source. prevent if from being thought of as
1242 "whole file" even if it covers the entire source file(s).
1247 plist.add (Properties::start, _start.val());
1248 plist.add (Properties::length, _length.val());
1249 plist.add (Properties::name, new_name);
1250 plist.add (Properties::layer, layer ());
1252 v.push_back(RegionFactory::create (srcs, plist));
1253 v.back()->set_whole_file (false);
1262 AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
1264 return audio_source(channel)->read (buf, pos, cnt);
1268 AudioRegion::set_scale_amplitude (gain_t g)
1270 boost::shared_ptr<Playlist> pl (playlist());
1272 _scale_amplitude = g;
1274 /* tell the diskstream we're in */
1277 pl->ContentsChanged();
1280 /* tell everybody else */
1282 send_change (PropertyChange (Properties::scale_amplitude));
1285 /** @return the maximum (linear) amplitude of the region, or a -ve
1286 * number if the Progress object reports that the process was cancelled.
1289 AudioRegion::maximum_amplitude (Progress* p) const
1291 framepos_t fpos = _start;
1292 framepos_t const fend = _start + _length;
1295 framecnt_t const blocksize = 64 * 1024;
1296 Sample buf[blocksize];
1298 while (fpos < fend) {
1302 framecnt_t const to_read = min (fend - fpos, blocksize);
1304 for (n = 0; n < n_channels(); ++n) {
1308 if (read_raw_internal (buf, fpos, to_read, n) != to_read) {
1312 maxamp = compute_peak (buf, to_read, maxamp);
1317 p->set_progress (float (fpos - _start) / _length);
1318 if (p->cancelled ()) {
1327 /** Normalize using a given maximum amplitude and target, so that region
1328 * _scale_amplitude becomes target / max_amplitude.
1331 AudioRegion::normalize (float max_amplitude, float target_dB)
1333 gain_t target = dB_to_coefficient (target_dB);
1335 if (target == 1.0f) {
1336 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1337 that we may have clipped.
1339 target -= FLT_EPSILON;
1342 if (max_amplitude == 0.0f) {
1343 /* don't even try */
1347 if (max_amplitude == target) {
1348 /* we can't do anything useful */
1352 set_scale_amplitude (target / max_amplitude);
1356 AudioRegion::fade_in_changed ()
1358 send_change (PropertyChange (Properties::fade_in));
1362 AudioRegion::fade_out_changed ()
1364 send_change (PropertyChange (Properties::fade_out));
1368 AudioRegion::envelope_changed ()
1370 send_change (PropertyChange (Properties::envelope));
1374 AudioRegion::suspend_fade_in ()
1376 if (++_fade_in_suspended == 1) {
1377 if (fade_in_is_default()) {
1378 set_fade_in_active (false);
1384 AudioRegion::resume_fade_in ()
1386 if (--_fade_in_suspended == 0 && _fade_in_suspended) {
1387 set_fade_in_active (true);
1392 AudioRegion::suspend_fade_out ()
1394 if (++_fade_out_suspended == 1) {
1395 if (fade_out_is_default()) {
1396 set_fade_out_active (false);
1402 AudioRegion::resume_fade_out ()
1404 if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
1405 set_fade_out_active (true);
1410 AudioRegion::speed_mismatch (float sr) const
1412 if (_sources.empty()) {
1413 /* impossible, but ... */
1417 float fsr = audio_source()->sample_rate();
1423 AudioRegion::source_offset_changed ()
1425 /* XXX this fixes a crash that should not occur. It does occur
1426 becauses regions are not being deleted when a session
1427 is unloaded. That bug must be fixed.
1430 if (_sources.empty()) {
1434 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1436 if (afs && afs->destructive()) {
1437 // set_start (source()->natural_position(), this);
1438 set_position (source()->natural_position());
1442 boost::shared_ptr<AudioSource>
1443 AudioRegion::audio_source (uint32_t n) const
1445 // Guaranteed to succeed (use a static cast for speed?)
1446 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1450 AudioRegion::adjust_transients (frameoffset_t delta)
1452 for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
1453 (*x) = (*x) + delta;
1456 send_change (PropertyChange (Properties::valid_transients));
1462 AudioRegion::update_transient (framepos_t old_position, framepos_t new_position)
1464 for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
1465 if ((*x) == old_position) {
1466 (*x) = new_position;
1467 send_change (PropertyChange (Properties::valid_transients));
1477 AudioRegion::add_transient (framepos_t where)
1479 _transients.push_back(where);
1480 _valid_transients = true;
1482 send_change (PropertyChange (Properties::valid_transients));
1486 AudioRegion::remove_transient (framepos_t where)
1488 _transients.remove(where);
1489 _valid_transients = true;
1491 send_change (PropertyChange (Properties::valid_transients));
1495 AudioRegion::set_transients (AnalysisFeatureList& results)
1497 _transients.clear();
1498 _transients = results;
1499 _valid_transients = true;
1501 send_change (PropertyChange (Properties::valid_transients));
1507 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1509 boost::shared_ptr<Playlist> pl = playlist();
1515 if (_valid_transients && !force_new) {
1516 results = _transients;
1520 SourceList::iterator s;
1522 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1523 if (!(*s)->has_been_analysed()) {
1524 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1529 if (s == _sources.end()) {
1530 /* all sources are analyzed, merge data from each one */
1532 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1534 /* find the set of transients within the bounds of this region */
1536 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1537 (*s)->transients.end(),
1540 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1541 (*s)->transients.end(),
1546 results.insert (results.end(), low, high);
1549 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1551 /* translate all transients to current position */
1553 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1558 _transients = results;
1559 _valid_transients = true;
1564 /* no existing/complete transient info */
1566 static bool analyse_dialog_shown = false; /* global per instance of Ardour */
1568 if (!Config->get_auto_analyse_audio()) {
1569 if (!analyse_dialog_shown) {
1570 pl->session().Dialog (_("\
1571 You have requested an operation that requires audio analysis.\n\n\
1572 You currently have \"auto-analyse-audio\" disabled, which means \
1573 that transient data must be generated every time it is required.\n\n\
1574 If you are doing work that will require transient data on a \
1575 regular basis, you should probably enable \"auto-analyse-audio\" \
1576 then quit ardour and restart.\n\n\
1577 This dialog will not display again. But you may notice a slight delay \
1578 in this and future transient-detection operations.\n\
1580 analyse_dialog_shown = true;
1584 TransientDetector t (pl->session().frame_rate());
1585 bool existing_results = !results.empty();
1587 _transients.clear ();
1588 _valid_transients = false;
1590 for (uint32_t i = 0; i < n_channels(); ++i) {
1592 AnalysisFeatureList these_results;
1596 if (t.run ("", this, i, these_results)) {
1600 /* translate all transients to give absolute position */
1602 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1608 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1611 if (!results.empty()) {
1612 if (existing_results) {
1614 /* merge our transients into the existing ones, then clean up
1618 results.insert (results.end(), _transients.begin(), _transients.end());
1619 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1622 /* make sure ours are clean too */
1624 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1628 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1629 results = _transients;
1632 _valid_transients = true;
1637 /** Find areas of `silence' within a region.
1639 * @param threshold Threshold below which signal is considered silence (as a sample value)
1640 * @param min_length Minimum length of silent period to be reported.
1641 * @return Silent intervals, measured relative to the region start in the source
1645 AudioRegion::find_silence (Sample threshold, framecnt_t min_length, InterThreadInfo& itt) const
1647 framecnt_t const block_size = 64 * 1024;
1648 boost::scoped_array<Sample> loudest (new Sample[block_size]);
1649 boost::scoped_array<Sample> buf (new Sample[block_size]);
1651 framepos_t pos = _start;
1652 framepos_t const end = _start + _length - 1;
1654 AudioIntervalResult silent_periods;
1656 bool in_silence = false;
1657 frameoffset_t silence_start = 0;
1659 while (pos < end && !itt.cancel) {
1661 /* fill `loudest' with the loudest absolute sample at each instant, across all channels */
1662 memset (loudest.get(), 0, sizeof (Sample) * block_size);
1663 for (uint32_t n = 0; n < n_channels(); ++n) {
1665 read_raw_internal (buf.get(), pos, block_size, n);
1666 for (framecnt_t i = 0; i < block_size; ++i) {
1667 loudest[i] = max (loudest[i], abs (buf[i]));
1671 /* now look for silence */
1672 for (framecnt_t i = 0; i < block_size; ++i) {
1673 bool const silence = abs (loudest[i]) < threshold;
1674 if (silence && !in_silence) {
1675 /* non-silence to silence */
1677 silence_start = pos + i;
1678 } else if (!silence && in_silence) {
1679 /* silence to non-silence */
1681 if (pos + i - 1 - silence_start >= min_length) {
1682 silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
1688 itt.progress = (end-pos)/(double)_length;
1691 if (in_silence && end - 1 - silence_start >= min_length) {
1692 /* last block was silent, so finish off the last period */
1693 silent_periods.push_back (std::make_pair (silence_start, end));
1698 return silent_periods;
1701 Evoral::Range<framepos_t>
1702 AudioRegion::body_range () const
1704 return Evoral::Range<framepos_t> (first_frame() + _fade_in->back()->when, last_frame() - _fade_out->back()->when);
1708 AudioRegion::set_fade_in_is_xfade (bool yn)
1710 _fade_in_is_xfade = yn;
1714 AudioRegion::set_fade_out_is_xfade (bool yn)
1716 _fade_out_is_xfade = yn;
1721 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)
1723 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
1726 uint32_t region_length_from_c (void *arg)
1729 return ((AudioRegion *) arg)->length();
1732 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1734 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;