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.
28 #include <glibmm/thread.h>
30 #include "pbd/basename.h"
31 #include "pbd/xml++.h"
32 #include "pbd/stacktrace.h"
33 #include "pbd/enumwriter.h"
34 #include "pbd/convert.h"
36 #include "evoral/Curve.hpp"
38 #include "ardour/audioregion.h"
39 #include "ardour/debug.h"
40 #include "ardour/session.h"
41 #include "ardour/gain.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"
53 using namespace ARDOUR;
57 namespace Properties {
58 PBD::PropertyDescriptor<bool> envelope_active;
59 PBD::PropertyDescriptor<bool> default_fade_in;
60 PBD::PropertyDescriptor<bool> default_fade_out;
61 PBD::PropertyDescriptor<bool> fade_in_active;
62 PBD::PropertyDescriptor<bool> fade_out_active;
63 PBD::PropertyDescriptor<float> scale_amplitude;
68 AudioRegion::make_property_quarks ()
70 Properties::envelope_active.property_id = g_quark_from_static_string (X_("envelope-active"));
71 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for envelope-active = %1\n", Properties::envelope_active.property_id));
72 Properties::default_fade_in.property_id = g_quark_from_static_string (X_("default-fade-in"));
73 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-in = %1\n", Properties::default_fade_in.property_id));
74 Properties::default_fade_out.property_id = g_quark_from_static_string (X_("default-fade-out"));
75 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-out = %1\n", Properties::default_fade_out.property_id));
76 Properties::fade_in_active.property_id = g_quark_from_static_string (X_("fade-in-active"));
77 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-in-active = %1\n", Properties::fade_in_active.property_id));
78 Properties::fade_out_active.property_id = g_quark_from_static_string (X_("fade-out-active"));
79 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-out-active = %1\n", Properties::fade_out_active.property_id));
80 Properties::scale_amplitude.property_id = g_quark_from_static_string (X_("scale-amplitude"));
81 DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for scale-amplitude = %1\n", Properties::scale_amplitude.property_id));
85 AudioRegion::register_properties ()
87 /* no need to register parent class properties */
89 add_property (_envelope_active);
90 add_property (_default_fade_in);
91 add_property (_default_fade_out);
92 add_property (_fade_in_active);
93 add_property (_fade_out_active);
94 add_property (_scale_amplitude);
97 #define AUDIOREGION_STATE_DEFAULT \
98 _envelope_active (Properties::envelope_active, false) \
99 , _default_fade_in (Properties::default_fade_in, true) \
100 , _default_fade_out (Properties::default_fade_out, true) \
101 , _fade_in_active (Properties::fade_in_active, true) \
102 , _fade_out_active (Properties::fade_out_active, true) \
103 , _scale_amplitude (Properties::scale_amplitude, 1.0)
105 #define AUDIOREGION_COPY_STATE(other) \
106 _envelope_active (other->_envelope_active) \
107 , _default_fade_in (other->_default_fade_in) \
108 , _default_fade_out (other->_default_fade_out) \
109 , _fade_in_active (other->_fade_in_active) \
110 , _fade_out_active (other->_fade_out_active) \
111 , _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 set_default_fades ();
121 set_default_envelope ();
123 listen_to_my_curves ();
124 connect_to_analysis_changed ();
125 connect_to_header_position_offset_changed ();
128 /** Constructor for use by derived types only */
129 AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
130 : Region (s, start, len, name, DataType::AUDIO)
131 , AUDIOREGION_STATE_DEFAULT
133 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
134 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
135 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
136 , _fade_in_suspended (0)
137 , _fade_out_suspended (0)
140 assert (_sources.size() == _master_sources.size());
143 /** Basic AudioRegion constructor */
144 AudioRegion::AudioRegion (const SourceList& srcs)
146 , AUDIOREGION_STATE_DEFAULT
147 , _automatable(srcs[0]->session())
148 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
149 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
150 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
151 , _fade_in_suspended (0)
152 , _fade_out_suspended (0)
155 assert (_sources.size() == _master_sources.size());
158 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes64_t offset, bool offset_relative)
159 : Region (other, offset, offset_relative)
160 , AUDIOREGION_COPY_STATE (other)
161 , _automatable (other->session())
162 , _fade_in (new AutomationList (*other->_fade_in))
163 , _fade_out (new AutomationList (*other->_fade_out))
164 /* XXX is this guaranteed to work for all values of offset+offset_relative? */
165 , _envelope (new AutomationList (*other->_envelope, _start, _start + _length))
166 , _fade_in_suspended (0)
167 , _fade_out_suspended (0)
169 /* don't use init here, because we got fade in/out from the other region
171 register_properties ();
172 listen_to_my_curves ();
173 connect_to_analysis_changed ();
174 connect_to_header_position_offset_changed ();
176 assert(_type == DataType::AUDIO);
177 assert (_sources.size() == _master_sources.size());
180 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
181 : Region (boost::static_pointer_cast<const Region>(other), srcs)
182 , AUDIOREGION_COPY_STATE (other)
183 , _automatable (other->session())
184 , _fade_in (new AutomationList (*other->_fade_in))
185 , _fade_out (new AutomationList (*other->_fade_out))
186 , _envelope (new AutomationList (*other->_envelope))
187 , _fade_in_suspended (0)
188 , _fade_out_suspended (0)
190 /* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
192 register_properties ();
194 listen_to_my_curves ();
195 connect_to_analysis_changed ();
196 connect_to_header_position_offset_changed ();
198 assert (_sources.size() == _master_sources.size());
201 AudioRegion::AudioRegion (SourceList& srcs)
203 , AUDIOREGION_STATE_DEFAULT
204 , _automatable(srcs[0]->session())
205 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
206 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
207 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
208 , _fade_in_suspended (0)
209 , _fade_out_suspended (0)
213 assert(_type == DataType::AUDIO);
214 assert (_sources.size() == _master_sources.size());
217 AudioRegion::~AudioRegion ()
222 AudioRegion::post_set ()
225 _sync_position = _start;
228 /* return to default fades if the existing ones are too long */
230 if (_left_of_split) {
231 if (_fade_in->back()->when >= _length) {
232 set_default_fade_in ();
234 set_default_fade_out ();
235 _left_of_split = false;
238 if (_right_of_split) {
239 if (_fade_out->back()->when >= _length) {
240 set_default_fade_out ();
243 set_default_fade_in ();
244 _right_of_split = false;
249 AudioRegion::connect_to_analysis_changed ()
251 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
252 (*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
257 AudioRegion::connect_to_header_position_offset_changed ()
259 set<boost::shared_ptr<Source> > unique_srcs;
261 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
263 if (unique_srcs.find (*i) == unique_srcs.end ()) {
264 unique_srcs.insert (*i);
265 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
267 afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
274 AudioRegion::listen_to_my_curves ()
276 _envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
277 _fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
278 _fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
282 AudioRegion::set_envelope_active (bool yn)
284 if (envelope_active() != yn) {
285 _envelope_active = yn;
286 send_change (PropertyChange (Properties::envelope_active));
291 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
293 if (chan_n >= _sources.size()) {
297 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
300 if (_scale_amplitude != 1.0f) {
301 for (nframes_t n = 0; n < npeaks; ++n) {
302 buf[n].max *= _scale_amplitude;
303 buf[n].min *= _scale_amplitude;
311 AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
313 /* raw read, no fades, no gain, nada */
314 return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, 0, 0, ReadOps (0));
318 AudioRegion::read_with_ops (Sample* buf, framepos_t file_position, framecnt_t cnt, int channel, ReadOps rops) const
320 return _read_at (_sources, _length, buf, 0, 0, file_position, cnt, channel, 0, 0, rops);
324 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
325 framepos_t file_position, framecnt_t cnt, uint32_t chan_n,
326 framecnt_t read_frames, framecnt_t skip_frames) const
328 /* regular diskstream/butler read complete with fades etc */
329 return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
330 file_position, cnt, chan_n, read_frames, skip_frames, ReadOps (~0));
334 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
335 framepos_t position, framecnt_t cnt, uint32_t chan_n) const
337 /* do not read gain/scaling/fades and do not count this disk i/o in statistics */
339 return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
340 buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0, ReadOps (0));
344 AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit,
345 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
349 framecnt_t /*read_frames*/,
350 framecnt_t /*skip_frames*/,
353 frameoffset_t internal_offset;
354 frameoffset_t buf_offset;
356 bool raw = (rops == ReadOpsNone);
358 if (muted() && !raw) {
359 return 0; /* read nothing */
362 /* precondition: caller has verified that we cover the desired section */
364 if (position < _position) {
366 buf_offset = _position - position;
369 internal_offset = position - _position;
373 if (internal_offset >= limit) {
374 return 0; /* read nothing */
377 if ((to_read = min (cnt, limit - internal_offset)) == 0) {
378 return 0; /* read nothing */
381 if (opaque() || raw) {
382 /* overwrite whatever is there */
383 mixdown_buffer = buf + buf_offset;
385 mixdown_buffer += buf_offset;
388 if (rops & ReadOpsCount) {
389 _read_data_count = 0;
392 if (chan_n < n_channels()) {
394 boost::shared_ptr<AudioSource> src = audio_source(chan_n);
395 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
396 return 0; /* "read nothing" */
399 if (rops & ReadOpsCount) {
400 _read_data_count += src->read_data_count();
405 /* track is N-channel, this region has less channels; silence the ones
409 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
412 if (rops & ReadOpsFades) {
416 if (_fade_in_active && _session.config.get_use_region_fades()) {
418 nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
420 /* see if this read is within the fade in */
422 if (internal_offset < fade_in_length) {
426 fi_limit = min (to_read, fade_in_length - internal_offset);
429 _fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit);
431 for (nframes_t n = 0; n < fi_limit; ++n) {
432 mixdown_buffer[n] *= gain_buffer[n];
439 if (_fade_out_active && _session.config.get_use_region_fades()) {
441 /* see if some part of this read is within the fade out */
443 /* ................. >| REGION
449 limit - fade_out_length
452 ^internal_offset + to_read
454 we need the intersection of [internal_offset,internal_offset+to_read] with
455 [limit - fade_out_length, limit]
460 nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
461 nframes_t fade_interval_start = max(internal_offset, limit-fade_out_length);
462 nframes_t fade_interval_end = min(internal_offset + to_read, limit);
464 if (fade_interval_end > fade_interval_start) {
465 /* (part of the) the fade out is in this buffer */
467 nframes_t fo_limit = fade_interval_end - fade_interval_start;
468 nframes_t curve_offset = fade_interval_start - (limit-fade_out_length);
469 nframes_t fade_offset = fade_interval_start - internal_offset;
471 _fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit);
473 for (nframes_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) {
474 mixdown_buffer[m] *= gain_buffer[n];
481 /* Regular gain curves and scaling */
483 if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
484 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
486 if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
487 for (nframes_t n = 0; n < to_read; ++n) {
488 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
491 for (nframes_t n = 0; n < to_read; ++n) {
492 mixdown_buffer[n] *= gain_buffer[n];
495 } else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
497 // XXX this should be using what in 2.0 would have been:
498 // Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
500 for (nframes_t n = 0; n < to_read; ++n) {
501 mixdown_buffer[n] *= _scale_amplitude;
507 /* gack. the things we do for users.
512 for (nframes_t n = 0; n < to_read; ++n) {
513 buf[n] += mixdown_buffer[n];
521 AudioRegion::state (bool full)
523 XMLNode& node (Region::state (full));
527 LocaleGuard lg (X_("POSIX"));
530 // XXX these should move into Region
532 for (uint32_t n=0; n < _sources.size(); ++n) {
533 snprintf (buf2, sizeof(buf2), "source-%d", n);
534 _sources[n]->id().print (buf, sizeof (buf));
535 node.add_property (buf2, buf);
538 for (uint32_t n=0; n < _master_sources.size(); ++n) {
539 snprintf (buf2, sizeof(buf2), "master-source-%d", n);
540 _master_sources[n]->id().print (buf, sizeof (buf));
541 node.add_property (buf2, buf);
544 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
545 node.add_property ("channels", buf);
548 Stateful::add_properties (node);
551 child = node.add_child ("Envelope");
554 bool default_env = false;
556 // If there are only two points, the points are in the start of the region and the end of the region
557 // so, if they are both at 1.0f, that means the default region.
559 if (_envelope->size() == 2 &&
560 _envelope->front()->value == 1.0f &&
561 _envelope->back()->value==1.0f) {
562 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
568 child->add_property ("default", "yes");
570 child->add_child_nocopy (_envelope->get_state ());
574 child->add_property ("default", "yes");
577 if (full && _extra_xml) {
578 node.add_child_copy (*_extra_xml);
585 AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
587 const XMLNodeList& nlist = node.children();
588 const XMLProperty *prop;
589 LocaleGuard lg (X_("POSIX"));
590 boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
592 suspend_property_changes ();
595 the_playlist->freeze ();
599 /* this will set all our State members and stuff controlled by the Region.
600 It should NOT send any changed signals - that is our responsibility.
603 Region::_set_state (node, version, what_changed, false);
605 if ((prop = node.property ("scale-gain")) != 0) {
606 float a = atof (prop->value().c_str());
607 if (a != _scale_amplitude) {
608 _scale_amplitude = a;
609 what_changed.add (Properties::scale_amplitude);
613 /* Now find envelope description and other related child items */
615 _envelope->freeze ();
617 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
623 if (child->name() == "Envelope") {
627 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
628 set_default_envelope ();
631 _envelope->set_max_xval (_length);
632 _envelope->truncate_end (_length);
635 } else if (child->name() == "FadeIn") {
639 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
640 set_default_fade_in ();
642 XMLNode* grandchild = child->child ("AutomationList");
644 _fade_in->set_state (*grandchild, version);
648 if ((prop = child->property ("active")) != 0) {
649 if (string_is_affirmative (prop->value())) {
650 set_fade_in_active (true);
652 set_fade_in_active (false);
656 } else if (child->name() == "FadeOut") {
660 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
661 set_default_fade_out ();
663 XMLNode* grandchild = child->child ("AutomationList");
665 _fade_out->set_state (*grandchild, version);
669 if ((prop = child->property ("active")) != 0) {
670 if (string_is_affirmative (prop->value())) {
671 set_fade_out_active (true);
673 set_fade_out_active (false);
681 resume_property_changes ();
684 send_change (what_changed);
688 the_playlist->thaw ();
695 AudioRegion::set_state (const XMLNode& node, int version)
697 PropertyChange what_changed;
698 return _set_state (node, version, what_changed, true);
702 AudioRegion::set_fade_in_shape (FadeShape shape)
704 set_fade_in (shape, (nframes_t) _fade_in->back()->when);
708 AudioRegion::set_fade_out_shape (FadeShape shape)
710 set_fade_out (shape, (nframes_t) _fade_out->back()->when);
714 AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
720 send_change (PropertyChange (Properties::fade_in));
724 AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
731 _fade_in->fast_simple_add (0.0, 0.0);
732 _fade_in->fast_simple_add (len, 1.0);
736 _fade_in->fast_simple_add (0, 0);
737 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
738 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
739 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
740 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
741 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
742 _fade_in->fast_simple_add (len, 1);
746 _fade_in->fast_simple_add (0, 0);
747 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
748 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
749 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
750 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
751 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
752 _fade_in->fast_simple_add (len * 0.767281, 1);
753 _fade_in->fast_simple_add (len, 1);
757 _fade_in->fast_simple_add (0, 0);
758 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
759 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
760 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
761 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
762 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
763 _fade_in->fast_simple_add (len, 1);
767 _fade_in->fast_simple_add (0, 0);
768 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
769 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
770 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
771 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
772 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
773 _fade_in->fast_simple_add (len, 1);
781 AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
783 _fade_out->freeze ();
787 send_change (PropertyChange (Properties::fade_in));
791 AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
793 _fade_out->freeze ();
798 _fade_out->fast_simple_add (len * 0, 1);
799 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
800 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
801 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
802 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
803 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
804 _fade_out->fast_simple_add (len * 1, 0);
808 _fade_out->fast_simple_add (len * 0, 1);
809 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
810 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
811 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
812 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
813 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
814 _fade_out->fast_simple_add (len * 1, 0);
818 _fade_out->fast_simple_add (len * 0, 1);
819 _fade_out->fast_simple_add (len * 0.305556, 1);
820 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
821 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
822 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
823 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
824 _fade_out->fast_simple_add (len * 1, 0);
828 _fade_out->fast_simple_add (len * 0, 1);
829 _fade_out->fast_simple_add (len * 0.080645, 0.730556);
830 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
831 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
832 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
833 _fade_out->fast_simple_add (len * 1, 0);
837 _fade_out->fast_simple_add (len * 0, 1);
838 _fade_out->fast_simple_add (len * 1, 0);
846 AudioRegion::set_fade_in_length (framecnt_t len)
852 bool changed = _fade_in->extend_to (len);
855 _default_fade_in = false;
856 send_change (PropertyChange (Properties::fade_in));
861 AudioRegion::set_fade_out_length (framecnt_t len)
867 bool changed = _fade_out->extend_to (len);
870 _default_fade_out = false;
871 send_change (PropertyChange (Properties::fade_out));
876 AudioRegion::set_fade_in_active (bool yn)
878 if (yn == _fade_in_active) {
882 _fade_in_active = yn;
883 send_change (PropertyChange (Properties::fade_in_active));
887 AudioRegion::set_fade_out_active (bool yn)
889 if (yn == _fade_out_active) {
892 _fade_out_active = yn;
893 send_change (PropertyChange (Properties::fade_out_active));
897 AudioRegion::fade_in_is_default () const
899 return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
903 AudioRegion::fade_out_is_default () const
905 return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
909 AudioRegion::set_default_fade_in ()
911 _fade_in_suspended = 0;
912 set_fade_in (Linear, 64);
916 AudioRegion::set_default_fade_out ()
918 _fade_out_suspended = 0;
919 set_fade_out (Linear, 64);
923 AudioRegion::set_default_fades ()
925 set_default_fade_in ();
926 set_default_fade_out ();
930 AudioRegion::set_default_envelope ()
932 _envelope->freeze ();
934 _envelope->fast_simple_add (0, 1.0f);
935 _envelope->fast_simple_add (_length, 1.0f);
940 AudioRegion::recompute_at_end ()
942 /* our length has changed. recompute a new final point by interpolating
943 based on the the existing curve.
946 _envelope->freeze ();
947 _envelope->truncate_end (_length);
948 _envelope->set_max_xval (_length);
951 if (_left_of_split) {
952 set_default_fade_out ();
953 _left_of_split = false;
954 } else if (_fade_out->back()->when > _length) {
955 _fade_out->extend_to (_length);
956 send_change (PropertyChange (Properties::fade_out));
959 if (_fade_in->back()->when > _length) {
960 _fade_in->extend_to (_length);
961 send_change (PropertyChange (Properties::fade_in));
966 AudioRegion::recompute_at_start ()
968 /* as above, but the shift was from the front */
970 _envelope->truncate_start (_length);
972 if (_right_of_split) {
973 set_default_fade_in ();
974 _right_of_split = false;
975 } else if (_fade_in->back()->when > _length) {
976 _fade_in->extend_to (_length);
977 send_change (PropertyChange (Properties::fade_in));
980 if (_fade_out->back()->when > _length) {
981 _fade_out->extend_to (_length);
982 send_change (PropertyChange (Properties::fade_out));
987 AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
993 if (_sources.size() < 2) {
997 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
1003 if (_sources.size() == 2) {
1011 new_name += ('0' + n + 1);
1014 /* create a copy with just one source. prevent if from being thought of as
1015 "whole file" even if it covers the entire source file(s).
1020 plist.add (Properties::start, _start.val());
1021 plist.add (Properties::length, _length.val());
1022 plist.add (Properties::name, new_name);
1023 plist.add (Properties::layer, _layer.val());
1025 v.push_back(RegionFactory::create (srcs, plist));
1026 v.back()->set_whole_file (false);
1035 AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
1037 return audio_source()->read (buf, pos, cnt, channel);
1041 AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
1044 // const nframes_t blocksize = 4096;
1045 // nframes_t to_read;
1048 // spec.channels = _sources.size();
1050 // if (spec.prepare (blocksize, session.frame_rate())) {
1055 // spec.total_frames = _length;
1057 // while (spec.pos < _length && !spec.stop) {
1060 // /* step 1: interleave */
1062 // to_read = min (_length - spec.pos, blocksize);
1064 // if (spec.channels == 1) {
1066 // if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
1072 // Sample buf[blocksize];
1074 // for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1076 // if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
1080 // for (nframes_t x = 0; x < to_read; ++x) {
1081 // spec.dataF[chan+(x*spec.channels)] = buf[x];
1086 // if (spec.process (to_read)) {
1090 // spec.pos += to_read;
1091 // spec.progress = (double) spec.pos /_length;
1098 // spec.running = false;
1099 // spec.status = status;
1107 AudioRegion::set_scale_amplitude (gain_t g)
1109 boost::shared_ptr<Playlist> pl (playlist());
1111 _scale_amplitude = g;
1113 /* tell the diskstream we're in */
1116 pl->ContentsChanged();
1119 /* tell everybody else */
1121 send_change (PropertyChange (Properties::scale_amplitude));
1125 AudioRegion::normalize_to (float target_dB)
1127 const framecnt_t blocksize = 64 * 1024;
1128 Sample buf[blocksize];
1133 gain_t target = dB_to_coefficient (target_dB);
1135 if (target == 1.0f) {
1136 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1137 that we may have clipped.
1139 target -= FLT_EPSILON;
1143 fend = _start + _length;
1145 /* first pass: find max amplitude */
1147 while (fpos < fend) {
1151 to_read = min (fend - fpos, blocksize);
1153 for (n = 0; n < n_channels(); ++n) {
1157 if (read_raw_internal (buf, fpos, to_read, 0) != to_read) {
1161 maxamp = compute_peak (buf, to_read, maxamp);
1167 if (maxamp == 0.0f) {
1168 /* don't even try */
1172 if (maxamp == target) {
1173 /* we can't do anything useful */
1177 /* compute scale factor */
1179 _scale_amplitude = target/maxamp;
1181 /* tell the diskstream we're in */
1183 boost::shared_ptr<Playlist> pl (playlist());
1186 pl->ContentsChanged();
1189 /* tell everybody else */
1191 send_change (PropertyChange (Properties::scale_amplitude));
1195 AudioRegion::fade_in_changed ()
1197 send_change (PropertyChange (Properties::fade_in));
1201 AudioRegion::fade_out_changed ()
1203 send_change (PropertyChange (Properties::fade_out));
1207 AudioRegion::envelope_changed ()
1209 send_change (PropertyChange (Properties::envelope));
1213 AudioRegion::suspend_fade_in ()
1215 if (++_fade_in_suspended == 1) {
1216 if (fade_in_is_default()) {
1217 set_fade_in_active (false);
1223 AudioRegion::resume_fade_in ()
1225 if (--_fade_in_suspended == 0 && _fade_in_suspended) {
1226 set_fade_in_active (true);
1231 AudioRegion::suspend_fade_out ()
1233 if (++_fade_out_suspended == 1) {
1234 if (fade_out_is_default()) {
1235 set_fade_out_active (false);
1241 AudioRegion::resume_fade_out ()
1243 if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
1244 set_fade_out_active (true);
1249 AudioRegion::speed_mismatch (float sr) const
1251 if (_sources.empty()) {
1252 /* impossible, but ... */
1256 float fsr = audio_source()->sample_rate();
1262 AudioRegion::source_offset_changed ()
1264 /* XXX this fixes a crash that should not occur. It does occur
1265 becauses regions are not being deleted when a session
1266 is unloaded. That bug must be fixed.
1269 if (_sources.empty()) {
1273 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1275 if (afs && afs->destructive()) {
1276 // set_start (source()->natural_position(), this);
1277 set_position (source()->natural_position(), this);
1281 boost::shared_ptr<AudioSource>
1282 AudioRegion::audio_source (uint32_t n) const
1284 // Guaranteed to succeed (use a static cast for speed?)
1285 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1289 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1291 boost::shared_ptr<Playlist> pl = playlist();
1297 if (_valid_transients && !force_new) {
1298 results = _transients;
1302 SourceList::iterator s;
1304 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1305 if (!(*s)->has_been_analysed()) {
1306 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1311 if (s == _sources.end()) {
1312 /* all sources are analyzed, merge data from each one */
1314 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1316 /* find the set of transients within the bounds of this region */
1318 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1319 (*s)->transients.end(),
1322 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1323 (*s)->transients.end(),
1328 results.insert (results.end(), low, high);
1331 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1333 /* translate all transients to current position */
1335 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1340 _transients = results;
1341 _valid_transients = true;
1346 /* no existing/complete transient info */
1348 static bool analyse_dialog_shown = false; /* global per instance of Ardour */
1350 if (!Config->get_auto_analyse_audio()) {
1351 if (!analyse_dialog_shown) {
1352 pl->session().Dialog (_("\
1353 You have requested an operation that requires audio analysis.\n\n \
1354 You currently have \"auto-analyse-audio\" disabled, which means\n\
1355 that transient data must be generated every time it is required.\n\n\
1356 If you are doing work that will require transient data on a\n\
1357 regular basis, you should probably enable \"auto-analyse-audio\"\n\
1358 +then quit ardour and restart.\n\n\
1359 +This dialog will not display again. But you may notice a slight delay\n\
1360 +in this and future transient-detection operations.\n\
1362 analyse_dialog_shown = true;
1366 TransientDetector t (pl->session().frame_rate());
1367 bool existing_results = !results.empty();
1369 _transients.clear ();
1370 _valid_transients = false;
1372 for (uint32_t i = 0; i < n_channels(); ++i) {
1374 AnalysisFeatureList these_results;
1378 if (t.run ("", this, i, these_results)) {
1382 /* translate all transients to give absolute position */
1384 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1390 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1393 if (!results.empty()) {
1394 if (existing_results) {
1396 /* merge our transients into the existing ones, then clean up
1400 results.insert (results.end(), _transients.begin(), _transients.end());
1401 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1404 /* make sure ours are clean too */
1406 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1410 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1411 results = _transients;
1414 _valid_transients = true;
1419 /** Find areas of `silence' within a region.
1421 * @param threshold Threshold below which signal is considered silence (as a sample value)
1422 * @param min_length Minimum length of silent period to be reported.
1423 * @return Silent periods; first of pair is the offset within the region, second is the length of the period
1426 std::list<std::pair<frameoffset_t, framecnt_t> >
1427 AudioRegion::find_silence (Sample threshold, framecnt_t min_length, InterThreadInfo& itt) const
1429 framecnt_t const block_size = 64 * 1024;
1430 Sample loudest[block_size];
1431 Sample buf[block_size];
1433 framepos_t pos = _start;
1434 framepos_t const end = _start + _length - 1;
1436 std::list<std::pair<frameoffset_t, framecnt_t> > silent_periods;
1438 bool in_silence = false;
1439 frameoffset_t silence_start = 0;
1442 while (pos < end && !itt.cancel) {
1444 /* fill `loudest' with the loudest absolute sample at each instant, across all channels */
1445 memset (loudest, 0, sizeof (Sample) * block_size);
1446 for (uint32_t n = 0; n < n_channels(); ++n) {
1448 read_raw_internal (buf, pos, block_size, n);
1449 for (framecnt_t i = 0; i < block_size; ++i) {
1450 loudest[i] = max (loudest[i], abs (buf[i]));
1454 /* now look for silence */
1455 for (framecnt_t i = 0; i < block_size; ++i) {
1456 silence = abs (loudest[i]) < threshold;
1457 if (silence && !in_silence) {
1458 /* non-silence to silence */
1460 silence_start = pos + i;
1461 } else if (!silence && in_silence) {
1462 /* silence to non-silence */
1464 if (pos + i - 1 - silence_start >= min_length) {
1465 silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
1471 itt.progress = (end-pos)/(double)_length;
1474 if (in_silence && end - 1 - silence_start >= min_length) {
1475 /* last block was silent, so finish off the last period */
1476 silent_periods.push_back (std::make_pair (silence_start, end));
1481 return silent_periods;
1488 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)
1490 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
1493 uint32_t region_length_from_c (void *arg)
1496 return ((AudioRegion *) arg)->length();
1499 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1501 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;