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/gain.h"
43 #include "ardour/dB.h"
44 #include "ardour/playlist.h"
45 #include "ardour/audiofilesource.h"
46 #include "ardour/region_factory.h"
47 #include "ardour/runtime_functions.h"
48 #include "ardour/transient_detector.h"
49 #include "ardour/progress.h"
55 using namespace ARDOUR;
59 namespace Properties {
60 PBD::PropertyDescriptor<bool> envelope_active;
61 PBD::PropertyDescriptor<bool> default_fade_in;
62 PBD::PropertyDescriptor<bool> default_fade_out;
63 PBD::PropertyDescriptor<bool> fade_in_active;
64 PBD::PropertyDescriptor<bool> fade_out_active;
65 PBD::PropertyDescriptor<float> scale_amplitude;
70 AudioRegion::make_property_quarks ()
72 Properties::envelope_active.property_id = g_quark_from_static_string (X_("envelope-active"));
73 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for envelope-active = %1\n", Properties::envelope_active.property_id));
74 Properties::default_fade_in.property_id = g_quark_from_static_string (X_("default-fade-in"));
75 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-in = %1\n", Properties::default_fade_in.property_id));
76 Properties::default_fade_out.property_id = g_quark_from_static_string (X_("default-fade-out"));
77 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-out = %1\n", Properties::default_fade_out.property_id));
78 Properties::fade_in_active.property_id = g_quark_from_static_string (X_("fade-in-active"));
79 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-in-active = %1\n", Properties::fade_in_active.property_id));
80 Properties::fade_out_active.property_id = g_quark_from_static_string (X_("fade-out-active"));
81 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-out-active = %1\n", Properties::fade_out_active.property_id));
82 Properties::scale_amplitude.property_id = g_quark_from_static_string (X_("scale-amplitude"));
83 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for scale-amplitude = %1\n", Properties::scale_amplitude.property_id));
87 AudioRegion::register_properties ()
89 /* no need to register parent class properties */
91 add_property (_envelope_active);
92 add_property (_default_fade_in);
93 add_property (_default_fade_out);
94 add_property (_fade_in_active);
95 add_property (_fade_out_active);
96 add_property (_scale_amplitude);
99 #define AUDIOREGION_STATE_DEFAULT \
100 _envelope_active (Properties::envelope_active, false) \
101 , _default_fade_in (Properties::default_fade_in, true) \
102 , _default_fade_out (Properties::default_fade_out, true) \
103 , _fade_in_active (Properties::fade_in_active, true) \
104 , _fade_out_active (Properties::fade_out_active, true) \
105 , _scale_amplitude (Properties::scale_amplitude, 1.0)
107 #define AUDIOREGION_COPY_STATE(other) \
108 _envelope_active (Properties::envelope_active, other->_envelope_active) \
109 , _default_fade_in (Properties::default_fade_in, other->_default_fade_in) \
110 , _default_fade_out (Properties::default_fade_out, other->_default_fade_out) \
111 , _fade_in_active (Properties::fade_in_active, other->_fade_in_active) \
112 , _fade_out_active (Properties::fade_out_active, other->_fade_out_active) \
113 , _scale_amplitude (Properties::scale_amplitude, other->_scale_amplitude)
114 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
119 register_properties ();
121 suspend_property_changes();
122 set_default_fades ();
123 set_default_envelope ();
124 resume_property_changes();
126 listen_to_my_curves ();
127 connect_to_analysis_changed ();
128 connect_to_header_position_offset_changed ();
131 /** Constructor for use by derived types only */
132 AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
133 : Region (s, start, len, name, DataType::AUDIO)
134 , AUDIOREGION_STATE_DEFAULT
136 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
137 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
138 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
139 , _fade_in_suspended (0)
140 , _fade_out_suspended (0)
143 assert (_sources.size() == _master_sources.size());
146 /** Basic AudioRegion constructor */
147 AudioRegion::AudioRegion (const SourceList& srcs)
149 , AUDIOREGION_STATE_DEFAULT
150 , _automatable(srcs[0]->session())
151 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
152 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
153 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
154 , _fade_in_suspended (0)
155 , _fade_out_suspended (0)
158 assert (_sources.size() == _master_sources.size());
161 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, framecnt_t offset, bool offset_relative)
162 : Region (other, offset, offset_relative)
163 , AUDIOREGION_COPY_STATE (other)
164 , _automatable (other->session())
165 , _fade_in (new AutomationList (*other->_fade_in))
166 , _fade_out (new AutomationList (*other->_fade_out))
167 /* As far as I can see, the _envelope's times are relative to region position, and have nothing
168 to do with sources (and hence _start). So when we copy the envelope, we just use the supplied offset.
170 , _envelope (new AutomationList (*other->_envelope, offset, other->_length))
171 , _fade_in_suspended (0)
172 , _fade_out_suspended (0)
174 /* don't use init here, because we got fade in/out from the other region
176 register_properties ();
177 listen_to_my_curves ();
178 connect_to_analysis_changed ();
179 connect_to_header_position_offset_changed ();
181 assert(_type == DataType::AUDIO);
182 assert (_sources.size() == _master_sources.size());
185 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
186 : Region (boost::static_pointer_cast<const Region>(other), srcs)
187 , AUDIOREGION_COPY_STATE (other)
188 , _automatable (other->session())
189 , _fade_in (new AutomationList (*other->_fade_in))
190 , _fade_out (new AutomationList (*other->_fade_out))
191 , _envelope (new AutomationList (*other->_envelope))
192 , _fade_in_suspended (0)
193 , _fade_out_suspended (0)
195 /* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
197 register_properties ();
199 listen_to_my_curves ();
200 connect_to_analysis_changed ();
201 connect_to_header_position_offset_changed ();
203 assert (_sources.size() == _master_sources.size());
206 AudioRegion::AudioRegion (SourceList& srcs)
208 , AUDIOREGION_STATE_DEFAULT
209 , _automatable(srcs[0]->session())
210 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
211 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
212 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
213 , _fade_in_suspended (0)
214 , _fade_out_suspended (0)
218 assert(_type == DataType::AUDIO);
219 assert (_sources.size() == _master_sources.size());
222 AudioRegion::~AudioRegion ()
227 AudioRegion::post_set ()
230 _sync_position = _start;
233 /* return to default fades if the existing ones are too long */
235 if (_left_of_split) {
236 if (_fade_in->back()->when >= _length) {
237 set_default_fade_in ();
239 set_default_fade_out ();
240 _left_of_split = false;
243 if (_right_of_split) {
244 if (_fade_out->back()->when >= _length) {
245 set_default_fade_out ();
248 set_default_fade_in ();
249 _right_of_split = false;
252 /* If _length changed, adjust our gain envelope accordingly */
253 _envelope->truncate_end (_length);
257 AudioRegion::connect_to_analysis_changed ()
259 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
260 (*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
265 AudioRegion::connect_to_header_position_offset_changed ()
267 set<boost::shared_ptr<Source> > unique_srcs;
269 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
271 /* connect only once to HeaderPositionOffsetChanged, even if sources are replicated
274 if (unique_srcs.find (*i) == unique_srcs.end ()) {
275 unique_srcs.insert (*i);
276 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
278 afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
285 AudioRegion::listen_to_my_curves ()
287 _envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
288 _fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
289 _fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
293 AudioRegion::set_envelope_active (bool yn)
295 if (envelope_active() != yn) {
296 _envelope_active = yn;
297 send_change (PropertyChange (Properties::envelope_active));
302 AudioRegion::read_peaks (PeakData *buf, framecnt_t npeaks, framecnt_t offset, framecnt_t cnt, uint32_t chan_n, double samples_per_unit) const
304 if (chan_n >= _sources.size()) {
308 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
311 if (_scale_amplitude != 1.0f) {
312 for (framecnt_t n = 0; n < npeaks; ++n) {
313 buf[n].max *= _scale_amplitude;
314 buf[n].min *= _scale_amplitude;
322 AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
324 /* raw read, no fades, no gain, nada */
325 return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, 0, 0, ReadOps (0));
329 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
330 framepos_t file_position, framecnt_t cnt, uint32_t chan_n,
331 framecnt_t read_frames, framecnt_t skip_frames) const
333 /* regular diskstream/butler read complete with fades etc */
334 return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
335 file_position, cnt, chan_n, read_frames, skip_frames, ReadOps (~0));
339 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
340 framepos_t position, framecnt_t cnt, uint32_t chan_n) const
342 /* do not read gain/scaling/fades and do not count this disk i/o in statistics */
344 return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
345 buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0, ReadOps (0));
349 AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit,
350 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
354 framecnt_t /*read_frames*/,
355 framecnt_t /*skip_frames*/,
358 frameoffset_t internal_offset;
359 frameoffset_t buf_offset;
361 bool raw = (rops == ReadOpsNone);
363 if (n_channels() == 0) {
367 if (muted() && !raw) {
368 return 0; /* read nothing */
371 /* precondition: caller has verified that we cover the desired section */
373 if (position < _position) {
375 buf_offset = _position - position;
378 internal_offset = position - _position;
382 if (internal_offset >= limit) {
383 return 0; /* read nothing */
386 if ((to_read = min (cnt, limit - internal_offset)) == 0) {
387 return 0; /* read nothing */
390 if (opaque() || raw) {
391 /* overwrite whatever is there */
392 mixdown_buffer = buf + buf_offset;
394 mixdown_buffer += buf_offset;
397 if (rops & ReadOpsCount) {
398 _read_data_count = 0;
401 if (chan_n < n_channels()) {
403 boost::shared_ptr<AudioSource> src = audio_source(chan_n);
404 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
405 return 0; /* "read nothing" */
408 if (rops & ReadOpsCount) {
409 _read_data_count += src->read_data_count();
414 /* track is N-channel, this region has less channels; silence the ones
418 if (Config->get_replicate_missing_region_channels()) {
419 /* track is N-channel, this region has less channels, so use a relevant channel
422 uint32_t channel = n_channels() % chan_n;
423 boost::shared_ptr<AudioSource> src = audio_source (channel);
425 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
426 return 0; /* "read nothing" */
429 /* adjust read data count appropriately since this was a duplicate read */
430 src->dec_read_data_count (to_read);
432 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
436 if (rops & ReadOpsFades) {
440 if (_fade_in_active && _session.config.get_use_region_fades()) {
442 framecnt_t fade_in_length = (framecnt_t) _fade_in->back()->when;
444 /* see if this read is within the fade in */
446 if (internal_offset < fade_in_length) {
450 fi_limit = min (to_read, fade_in_length - internal_offset);
452 _fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit);
454 for (framecnt_t n = 0; n < fi_limit; ++n) {
455 mixdown_buffer[n] *= gain_buffer[n];
462 if (_fade_out_active && _session.config.get_use_region_fades()) {
464 /* see if some part of this read is within the fade out */
466 /* ................. >| REGION
472 limit - fade_out_length
475 ^internal_offset + to_read
477 we need the intersection of [internal_offset,internal_offset+to_read] with
478 [limit - fade_out_length, limit]
483 framecnt_t fade_out_length = (framecnt_t) _fade_out->back()->when;
484 framecnt_t fade_interval_start = max(internal_offset, limit-fade_out_length);
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 */
490 framecnt_t fo_limit = fade_interval_end - fade_interval_start;
491 framecnt_t curve_offset = fade_interval_start - (limit-fade_out_length);
492 framecnt_t fade_offset = fade_interval_start - internal_offset;
494 _fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit);
496 for (framecnt_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) {
497 mixdown_buffer[m] *= gain_buffer[n];
504 /* Regular gain curves and scaling */
506 if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
507 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
509 if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
510 for (framecnt_t n = 0; n < to_read; ++n) {
511 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
514 for (framecnt_t n = 0; n < to_read; ++n) {
515 mixdown_buffer[n] *= gain_buffer[n];
518 } else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
520 // XXX this should be using what in 2.0 would have been:
521 // Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
523 for (framecnt_t n = 0; n < to_read; ++n) {
524 mixdown_buffer[n] *= _scale_amplitude;
528 if (!opaque() && (buf != mixdown_buffer)) {
530 /* gack. the things we do for users.
535 for (framecnt_t n = 0; n < to_read; ++n) {
536 buf[n] += mixdown_buffer[n];
544 AudioRegion::state ()
546 XMLNode& node (Region::state ());
549 LocaleGuard lg (X_("POSIX"));
551 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
552 node.add_property ("channels", buf);
554 Stateful::add_properties (node);
556 child = node.add_child ("Envelope");
558 bool default_env = false;
560 // If there are only two points, the points are in the start of the region and the end of the region
561 // so, if they are both at 1.0f, that means the default region.
563 if (_envelope->size() == 2 &&
564 _envelope->front()->value == 1.0f &&
565 _envelope->back()->value==1.0f) {
566 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
572 child->add_property ("default", "yes");
574 child->add_child_nocopy (_envelope->get_state ());
577 child = node.add_child (X_("FadeIn"));
579 if (_default_fade_in) {
580 child->add_property ("default", "yes");
582 child->add_child_nocopy (_fade_in->get_state ());
585 child = node.add_child (X_("FadeOut"));
587 if (_default_fade_out) {
588 child->add_property ("default", "yes");
590 child->add_child_nocopy (_fade_out->get_state ());
597 AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
599 const XMLNodeList& nlist = node.children();
600 const XMLProperty *prop;
601 LocaleGuard lg (X_("POSIX"));
602 boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
604 suspend_property_changes ();
607 the_playlist->freeze ();
611 /* this will set all our State members and stuff controlled by the Region.
612 It should NOT send any changed signals - that is our responsibility.
615 Region::_set_state (node, version, what_changed, false);
617 if ((prop = node.property ("scale-gain")) != 0) {
618 float a = atof (prop->value().c_str());
619 if (a != _scale_amplitude) {
620 _scale_amplitude = a;
621 what_changed.add (Properties::scale_amplitude);
625 /* Now find envelope description and other related child items */
627 _envelope->freeze ();
629 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
635 if (child->name() == "Envelope") {
639 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
640 set_default_envelope ();
643 _envelope->set_max_xval (_length);
644 _envelope->truncate_end (_length);
647 } else if (child->name() == "FadeIn") {
651 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
652 set_default_fade_in ();
654 XMLNode* grandchild = child->child ("AutomationList");
656 _fade_in->set_state (*grandchild, version);
660 if ((prop = child->property ("active")) != 0) {
661 if (string_is_affirmative (prop->value())) {
662 set_fade_in_active (true);
664 set_fade_in_active (false);
668 } else if (child->name() == "FadeOut") {
672 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
673 set_default_fade_out ();
675 XMLNode* grandchild = child->child ("AutomationList");
677 _fade_out->set_state (*grandchild, version);
681 if ((prop = child->property ("active")) != 0) {
682 if (string_is_affirmative (prop->value())) {
683 set_fade_out_active (true);
685 set_fade_out_active (false);
693 resume_property_changes ();
696 send_change (what_changed);
700 the_playlist->thaw ();
707 AudioRegion::set_state (const XMLNode& node, int version)
709 PropertyChange what_changed;
710 return _set_state (node, version, what_changed, true);
714 AudioRegion::set_fade_in_shape (FadeShape shape)
716 set_fade_in (shape, (framecnt_t) _fade_in->back()->when);
720 AudioRegion::set_fade_out_shape (FadeShape shape)
722 set_fade_out (shape, (framecnt_t) _fade_out->back()->when);
726 AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
732 send_change (PropertyChange (Properties::fade_in));
736 AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
743 _fade_in->fast_simple_add (0.0, 0.0);
744 _fade_in->fast_simple_add (len, 1.0);
748 _fade_in->fast_simple_add (0, 0);
749 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
750 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
751 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
752 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
753 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
754 _fade_in->fast_simple_add (len, 1);
758 _fade_in->fast_simple_add (0, 0);
759 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
760 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
761 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
762 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
763 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
764 _fade_in->fast_simple_add (len * 0.767281, 1);
765 _fade_in->fast_simple_add (len, 1);
769 _fade_in->fast_simple_add (0, 0);
770 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
771 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
772 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
773 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
774 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
775 _fade_in->fast_simple_add (len, 1);
779 _fade_in->fast_simple_add (0, 0);
780 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
781 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
782 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
783 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
784 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
785 _fade_in->fast_simple_add (len, 1);
790 send_change (PropertyChange (Properties::fade_in));
794 AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
796 _fade_out->freeze ();
800 send_change (PropertyChange (Properties::fade_in));
804 AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
806 _fade_out->freeze ();
811 _fade_out->fast_simple_add (len * 0, 1);
812 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
813 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
814 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
815 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
816 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
817 _fade_out->fast_simple_add (len * 1, 0);
821 _fade_out->fast_simple_add (len * 0, 1);
822 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
823 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
824 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
825 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
826 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
827 _fade_out->fast_simple_add (len * 1, 0);
831 _fade_out->fast_simple_add (len * 0, 1);
832 _fade_out->fast_simple_add (len * 0.305556, 1);
833 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
834 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
835 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
836 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
837 _fade_out->fast_simple_add (len * 1, 0);
841 _fade_out->fast_simple_add (len * 0, 1);
842 _fade_out->fast_simple_add (len * 0.080645, 0.730556);
843 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
844 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
845 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
846 _fade_out->fast_simple_add (len * 1, 0);
850 _fade_out->fast_simple_add (len * 0, 1);
851 _fade_out->fast_simple_add (len * 1, 0);
856 send_change (PropertyChange (Properties::fade_in));
860 AudioRegion::set_fade_in_length (framecnt_t len)
866 bool changed = _fade_in->extend_to (len);
869 _default_fade_in = false;
870 send_change (PropertyChange (Properties::fade_in));
875 AudioRegion::set_fade_out_length (framecnt_t len)
881 bool changed = _fade_out->extend_to (len);
884 _default_fade_out = false;
885 send_change (PropertyChange (Properties::fade_out));
890 AudioRegion::set_fade_in_active (bool yn)
892 if (yn == _fade_in_active) {
896 _fade_in_active = yn;
897 send_change (PropertyChange (Properties::fade_in_active));
901 AudioRegion::set_fade_out_active (bool yn)
903 if (yn == _fade_out_active) {
906 _fade_out_active = yn;
907 send_change (PropertyChange (Properties::fade_out_active));
911 AudioRegion::fade_in_is_default () const
913 return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
917 AudioRegion::fade_out_is_default () const
919 return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
923 AudioRegion::set_default_fade_in ()
925 _fade_in_suspended = 0;
926 set_fade_in (FadeLinear, 64);
930 AudioRegion::set_default_fade_out ()
932 _fade_out_suspended = 0;
933 set_fade_out (FadeLinear, 64);
937 AudioRegion::set_default_fades ()
939 set_default_fade_in ();
940 set_default_fade_out ();
944 AudioRegion::set_default_envelope ()
946 _envelope->freeze ();
948 _envelope->fast_simple_add (0, 1.0f);
949 _envelope->fast_simple_add (_length, 1.0f);
954 AudioRegion::recompute_at_end ()
956 /* our length has changed. recompute a new final point by interpolating
957 based on the the existing curve.
960 _envelope->freeze ();
961 _envelope->truncate_end (_length);
962 _envelope->set_max_xval (_length);
965 suspend_property_changes();
967 if (_left_of_split) {
968 set_default_fade_out ();
969 _left_of_split = false;
970 } else if (_fade_out->back()->when > _length) {
971 _fade_out->extend_to (_length);
972 send_change (PropertyChange (Properties::fade_out));
975 if (_fade_in->back()->when > _length) {
976 _fade_in->extend_to (_length);
977 send_change (PropertyChange (Properties::fade_in));
980 resume_property_changes();
984 AudioRegion::recompute_at_start ()
986 /* as above, but the shift was from the front */
988 _envelope->truncate_start (_length);
990 suspend_property_changes();
992 if (_right_of_split) {
993 set_default_fade_in ();
994 _right_of_split = false;
995 } else if (_fade_in->back()->when > _length) {
996 _fade_in->extend_to (_length);
997 send_change (PropertyChange (Properties::fade_in));
1000 if (_fade_out->back()->when > _length) {
1001 _fade_out->extend_to (_length);
1002 send_change (PropertyChange (Properties::fade_out));
1005 resume_property_changes();
1009 AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
1015 if (_sources.size() < 2) {
1019 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
1021 srcs.push_back (*i);
1025 if (_sources.size() == 2) {
1033 new_name += ('0' + n + 1);
1036 /* create a copy with just one source. prevent if from being thought of as
1037 "whole file" even if it covers the entire source file(s).
1042 plist.add (Properties::start, _start.val());
1043 plist.add (Properties::length, _length.val());
1044 plist.add (Properties::name, new_name);
1045 plist.add (Properties::layer, _layer.val());
1047 v.push_back(RegionFactory::create (srcs, plist));
1048 v.back()->set_whole_file (false);
1057 AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
1059 return audio_source()->read (buf, pos, cnt, channel);
1063 AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
1066 // const framecnt_t blocksize = 4096;
1067 // framecnt_t to_read;
1070 // spec.channels = _sources.size();
1072 // if (spec.prepare (blocksize, session.frame_rate())) {
1077 // spec.total_frames = _length;
1079 // while (spec.pos < _length && !spec.stop) {
1082 // /* step 1: interleave */
1084 // to_read = min (_length - spec.pos, blocksize);
1086 // if (spec.channels == 1) {
1088 // if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
1094 // Sample buf[blocksize];
1096 // for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1098 // if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
1102 // for (framecnt_t x = 0; x < to_read; ++x) {
1103 // spec.dataF[chan+(x*spec.channels)] = buf[x];
1108 // if (spec.process (to_read)) {
1112 // spec.pos += to_read;
1113 // spec.progress = (double) spec.pos /_length;
1120 // spec.running = false;
1121 // spec.status = status;
1129 AudioRegion::set_scale_amplitude (gain_t g)
1131 boost::shared_ptr<Playlist> pl (playlist());
1133 _scale_amplitude = g;
1135 /* tell the diskstream we're in */
1138 pl->ContentsChanged();
1141 /* tell everybody else */
1143 send_change (PropertyChange (Properties::scale_amplitude));
1146 /** @return the maximum (linear) amplitude of the region, or a -ve
1147 * number if the Progress object reports that the process was cancelled.
1150 AudioRegion::maximum_amplitude (Progress* p) const
1152 framepos_t fpos = _start;
1153 framepos_t const fend = _start + _length;
1156 framecnt_t const blocksize = 64 * 1024;
1157 Sample buf[blocksize];
1159 while (fpos < fend) {
1163 framecnt_t const to_read = min (fend - fpos, blocksize);
1165 for (n = 0; n < n_channels(); ++n) {
1169 if (read_raw_internal (buf, fpos, to_read, 0) != to_read) {
1173 maxamp = compute_peak (buf, to_read, maxamp);
1178 p->set_progress (float (fpos - _start) / _length);
1179 if (p->cancelled ()) {
1188 /** Normalize using a given maximum amplitude and target, so that region
1189 * _scale_amplitude becomes target / max_amplitude.
1192 AudioRegion::normalize (float max_amplitude, float target_dB)
1194 gain_t target = dB_to_coefficient (target_dB);
1196 if (target == 1.0f) {
1197 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1198 that we may have clipped.
1200 target -= FLT_EPSILON;
1203 if (max_amplitude == 0.0f) {
1204 /* don't even try */
1208 if (max_amplitude == target) {
1209 /* we can't do anything useful */
1213 set_scale_amplitude (target / max_amplitude);
1217 AudioRegion::fade_in_changed ()
1219 send_change (PropertyChange (Properties::fade_in));
1223 AudioRegion::fade_out_changed ()
1225 send_change (PropertyChange (Properties::fade_out));
1229 AudioRegion::envelope_changed ()
1231 send_change (PropertyChange (Properties::envelope));
1235 AudioRegion::suspend_fade_in ()
1237 if (++_fade_in_suspended == 1) {
1238 if (fade_in_is_default()) {
1239 set_fade_in_active (false);
1245 AudioRegion::resume_fade_in ()
1247 if (--_fade_in_suspended == 0 && _fade_in_suspended) {
1248 set_fade_in_active (true);
1253 AudioRegion::suspend_fade_out ()
1255 if (++_fade_out_suspended == 1) {
1256 if (fade_out_is_default()) {
1257 set_fade_out_active (false);
1263 AudioRegion::resume_fade_out ()
1265 if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
1266 set_fade_out_active (true);
1271 AudioRegion::speed_mismatch (float sr) const
1273 if (_sources.empty()) {
1274 /* impossible, but ... */
1278 float fsr = audio_source()->sample_rate();
1284 AudioRegion::source_offset_changed ()
1286 /* XXX this fixes a crash that should not occur. It does occur
1287 becauses regions are not being deleted when a session
1288 is unloaded. That bug must be fixed.
1291 if (_sources.empty()) {
1295 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1297 if (afs && afs->destructive()) {
1298 // set_start (source()->natural_position(), this);
1299 set_position (source()->natural_position(), this);
1303 boost::shared_ptr<AudioSource>
1304 AudioRegion::audio_source (uint32_t n) const
1306 // Guaranteed to succeed (use a static cast for speed?)
1307 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1311 AudioRegion::adjust_transients (frameoffset_t delta)
1313 for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
1314 (*x) = (*x) + delta;
1317 send_change (PropertyChange (Properties::valid_transients));
1323 AudioRegion::update_transient (framepos_t old_position, framepos_t new_position)
1325 for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
1326 if ((*x) == old_position) {
1327 (*x) = new_position;
1328 send_change (PropertyChange (Properties::valid_transients));
1338 AudioRegion::add_transient (framepos_t where)
1340 _transients.push_back(where);
1341 _valid_transients = true;
1343 send_change (PropertyChange (Properties::valid_transients));
1347 AudioRegion::remove_transient (framepos_t where)
1349 _transients.remove(where);
1350 _valid_transients = true;
1352 send_change (PropertyChange (Properties::valid_transients));
1356 AudioRegion::set_transients (AnalysisFeatureList& results)
1358 _transients.clear();
1359 _transients = results;
1360 _valid_transients = true;
1362 send_change (PropertyChange (Properties::valid_transients));
1368 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1370 boost::shared_ptr<Playlist> pl = playlist();
1376 if (_valid_transients && !force_new) {
1377 results = _transients;
1381 SourceList::iterator s;
1383 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1384 if (!(*s)->has_been_analysed()) {
1385 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1390 if (s == _sources.end()) {
1391 /* all sources are analyzed, merge data from each one */
1393 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1395 /* find the set of transients within the bounds of this region */
1397 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1398 (*s)->transients.end(),
1401 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1402 (*s)->transients.end(),
1407 results.insert (results.end(), low, high);
1410 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1412 /* translate all transients to current position */
1414 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1419 _transients = results;
1420 _valid_transients = true;
1425 /* no existing/complete transient info */
1427 static bool analyse_dialog_shown = false; /* global per instance of Ardour */
1429 if (!Config->get_auto_analyse_audio()) {
1430 if (!analyse_dialog_shown) {
1431 pl->session().Dialog (_("\
1432 You have requested an operation that requires audio analysis.\n\n\
1433 You currently have \"auto-analyse-audio\" disabled, which means \
1434 that transient data must be generated every time it is required.\n\n\
1435 If you are doing work that will require transient data on a \
1436 regular basis, you should probably enable \"auto-analyse-audio\" \
1437 then quit ardour and restart.\n\n\
1438 This dialog will not display again. But you may notice a slight delay \
1439 in this and future transient-detection operations.\n\
1441 analyse_dialog_shown = true;
1445 TransientDetector t (pl->session().frame_rate());
1446 bool existing_results = !results.empty();
1448 _transients.clear ();
1449 _valid_transients = false;
1451 for (uint32_t i = 0; i < n_channels(); ++i) {
1453 AnalysisFeatureList these_results;
1457 if (t.run ("", this, i, these_results)) {
1461 /* translate all transients to give absolute position */
1463 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1469 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1472 if (!results.empty()) {
1473 if (existing_results) {
1475 /* merge our transients into the existing ones, then clean up
1479 results.insert (results.end(), _transients.begin(), _transients.end());
1480 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1483 /* make sure ours are clean too */
1485 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1489 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1490 results = _transients;
1493 _valid_transients = true;
1498 /** Find areas of `silence' within a region.
1500 * @param threshold Threshold below which signal is considered silence (as a sample value)
1501 * @param min_length Minimum length of silent period to be reported.
1502 * @return Silent intervals, measured relative to the region start in the source
1506 AudioRegion::find_silence (Sample threshold, framecnt_t min_length, InterThreadInfo& itt) const
1508 framecnt_t const block_size = 64 * 1024;
1509 boost::scoped_array<Sample> loudest (new Sample[block_size]);
1510 boost::scoped_array<Sample> buf (new Sample[block_size]);
1512 framepos_t pos = _start;
1513 framepos_t const end = _start + _length - 1;
1515 AudioIntervalResult silent_periods;
1517 bool in_silence = false;
1518 frameoffset_t silence_start = 0;
1521 while (pos < end && !itt.cancel) {
1523 /* fill `loudest' with the loudest absolute sample at each instant, across all channels */
1524 memset (loudest.get(), 0, sizeof (Sample) * block_size);
1525 for (uint32_t n = 0; n < n_channels(); ++n) {
1527 read_raw_internal (buf.get(), pos, block_size, n);
1528 for (framecnt_t i = 0; i < block_size; ++i) {
1529 loudest[i] = max (loudest[i], abs (buf[i]));
1533 /* now look for silence */
1534 for (framecnt_t i = 0; i < block_size; ++i) {
1535 silence = abs (loudest[i]) < threshold;
1536 if (silence && !in_silence) {
1537 /* non-silence to silence */
1539 silence_start = pos + i;
1540 } else if (!silence && in_silence) {
1541 /* silence to non-silence */
1543 if (pos + i - 1 - silence_start >= min_length) {
1544 silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
1550 itt.progress = (end-pos)/(double)_length;
1553 if (in_silence && end - 1 - silence_start >= min_length) {
1554 /* last block was silent, so finish off the last period */
1555 silent_periods.push_back (std::make_pair (silence_start, end));
1560 return silent_periods;
1567 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)
1569 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
1572 uint32_t region_length_from_c (void *arg)
1575 return ((AudioRegion *) arg)->length();
1578 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1580 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;