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 <sigc++/bind.h>
28 #include <sigc++/class_slot.h>
30 #include <glibmm/thread.h>
32 #include <pbd/basename.h>
33 #include <pbd/xml++.h>
34 #include <pbd/stacktrace.h>
35 #include <pbd/enumwriter.h>
36 #include <pbd/convert.h>
38 #include <ardour/audioregion.h>
39 #include <ardour/session.h>
40 #include <ardour/gain.h>
41 #include <ardour/dB.h>
42 #include <ardour/playlist.h>
43 #include <ardour/audiofilesource.h>
44 #include <ardour/region_factory.h>
45 #include <ardour/runtime_functions.h>
46 #include <ardour/transient_detector.h>
52 using namespace ARDOUR;
55 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
57 Change AudioRegion::FadeInChanged = ARDOUR::new_change();
58 Change AudioRegion::FadeOutChanged = ARDOUR::new_change();
59 Change AudioRegion::FadeInActiveChanged = ARDOUR::new_change();
60 Change AudioRegion::FadeOutActiveChanged = ARDOUR::new_change();
61 Change AudioRegion::EnvelopeActiveChanged = ARDOUR::new_change();
62 Change AudioRegion::ScaleAmplitudeChanged = ARDOUR::new_change();
63 Change AudioRegion::EnvelopeChanged = ARDOUR::new_change();
68 _scale_amplitude = 1.0;
71 set_default_envelope ();
73 listen_to_my_curves ();
74 listen_to_my_sources ();
77 /* constructor for use by derived types only */
78 AudioRegion::AudioRegion (Session& s, nframes_t start, nframes_t length, string name)
79 : Region (s, start, length, name, DataType::AUDIO)
80 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
81 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
82 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
87 /** Basic AudioRegion constructor (one channel) */
88 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length)
89 : Region (src, start, length, PBD::basename_nosuffix(src->name()), DataType::AUDIO, 0, Region::Flag(Region::DefaultFlags|Region::External))
90 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
91 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
92 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
94 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
96 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
102 /* Basic AudioRegion constructor (one channel) */
103 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
104 : Region (src, start, length, name, DataType::AUDIO, layer, flags)
105 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
106 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
107 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
109 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
111 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
117 /* Basic AudioRegion constructor (many channels) */
118 AudioRegion::AudioRegion (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
119 : Region (srcs, start, length, name, DataType::AUDIO, layer, flags)
120 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
121 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
122 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
125 listen_to_my_sources ();
128 /** Create a new AudioRegion, that is part of an existing one */
129 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
130 : Region (other, offset, length, name, layer, flags)
131 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
132 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
133 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
135 set<boost::shared_ptr<Source> > unique_srcs;
137 for (SourceList::const_iterator i= other->_sources.begin(); i != other->_sources.end(); ++i) {
138 _sources.push_back (*i);
140 pair<set<boost::shared_ptr<Source> >::iterator,bool> result;
142 result = unique_srcs.insert (*i);
145 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
147 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
152 /* return to default fades if the existing ones are too long */
155 if (_flags & LeftOfSplit) {
156 if (_fade_in->back()->when >= _length) {
157 set_default_fade_in ();
159 _fade_in_disabled = other->_fade_in_disabled;
161 set_default_fade_out ();
162 _flags = Flag (_flags & ~Region::LeftOfSplit);
165 if (_flags & RightOfSplit) {
166 if (_fade_out->back()->when >= _length) {
167 set_default_fade_out ();
169 _fade_out_disabled = other->_fade_out_disabled;
171 set_default_fade_in ();
172 _flags = Flag (_flags & ~Region::RightOfSplit);
175 _scale_amplitude = other->_scale_amplitude;
177 assert(_type == DataType::AUDIO);
178 listen_to_my_sources ();
181 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
183 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
184 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
185 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
187 assert(_type == DataType::AUDIO);
188 _scale_amplitude = other->_scale_amplitude;
189 _envelope = other->_envelope;
191 set_default_fades ();
193 listen_to_my_curves ();
194 listen_to_my_sources ();
197 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, const XMLNode& node)
199 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
200 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
201 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
203 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
205 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
210 if (set_state (node)) {
211 throw failed_constructor();
214 assert(_type == DataType::AUDIO);
215 listen_to_my_sources ();
218 AudioRegion::AudioRegion (SourceList& srcs, const XMLNode& node)
219 : Region (srcs, node)
220 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
221 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
222 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
226 if (set_state (node)) {
227 throw failed_constructor();
230 assert(_type == DataType::AUDIO);
231 listen_to_my_sources ();
234 AudioRegion::~AudioRegion ()
239 AudioRegion::listen_to_my_sources ()
241 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
242 (*i)->AnalysisChanged.connect (mem_fun (*this, &AudioRegion::invalidate_transients));
247 AudioRegion::listen_to_my_curves ()
249 _envelope->StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
250 _fade_in->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_in_changed));
251 _fade_out->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_out_changed));
255 AudioRegion::set_envelope_active (bool yn)
257 if (envelope_active() != yn) {
260 snprintf (buf, sizeof (buf), "envelope active");
261 _flags = Flag (_flags|EnvelopeActive);
263 snprintf (buf, sizeof (buf), "envelope off");
264 _flags = Flag (_flags & ~EnvelopeActive);
266 send_change (EnvelopeActiveChanged);
271 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
273 if (chan_n >= _sources.size()) {
277 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
280 if (_scale_amplitude != 1.0) {
281 for (nframes_t n = 0; n < npeaks; ++n) {
282 buf[n].max *= _scale_amplitude;
283 buf[n].min *= _scale_amplitude;
291 AudioRegion::read (Sample* buf, nframes64_t position, nframes64_t cnt, int channel) const
293 /* raw read, no fades, no gain, nada */
294 return _read_at (_sources, buf, 0, 0, _position + position, cnt, channel, 0, 0, true);
298 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
300 uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const
302 /* regular diskstream/butler read complete with fades etc */
303 return _read_at (_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, read_frames, skip_frames, false);
307 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
308 nframes_t cnt, uint32_t chan_n) const
310 return _read_at (_master_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0);
314 AudioRegion::_read_at (const SourceList& srcs, Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
315 nframes_t position, nframes_t cnt,
317 nframes_t read_frames,
318 nframes_t skip_frames,
321 nframes_t internal_offset;
322 nframes_t buf_offset;
325 if (muted() && !raw) {
326 return 0; /* read nothing */
329 /* precondition: caller has verified that we cover the desired section */
331 if (position < _position) {
333 buf_offset = _position - position;
336 internal_offset = position - _position;
340 if (internal_offset >= _length) {
341 return 0; /* read nothing */
344 if ((to_read = min (cnt, _length - internal_offset)) == 0) {
345 return 0; /* read nothing */
348 if (opaque() || raw) {
349 /* overwrite whatever is there */
350 mixdown_buffer = buf + buf_offset;
352 mixdown_buffer += buf_offset;
356 _read_data_count = 0;
359 if (chan_n < n_channels()) {
361 boost::shared_ptr<AudioSource> src = audio_source(chan_n);
362 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
363 return 0; /* "read nothing" */
367 _read_data_count += src->read_data_count();
372 /* track is N-channel, this region has less channels; silence the ones
376 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
378 /* no fades required */
389 if (_flags & FadeIn) {
391 nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
393 /* see if this read is within the fade in */
395 if (internal_offset < fade_in_length) {
399 limit = min (to_read, fade_in_length - internal_offset);
401 _fade_in->curve().get_vector (internal_offset, internal_offset+limit, gain_buffer, limit);
403 for (nframes_t n = 0; n < limit; ++n) {
404 mixdown_buffer[n] *= gain_buffer[n];
411 if (_flags & FadeOut) {
413 /* see if some part of this read is within the fade out */
415 /* ................. >| REGION
421 _length - fade_out_length
424 ^internal_offset + to_read
426 we need the intersection of [internal_offset,internal_offset+to_read] with
427 [_length - fade_out_length, _length]
432 nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
433 nframes_t fade_interval_start = max(internal_offset, _length-fade_out_length);
434 nframes_t fade_interval_end = min(internal_offset + to_read, _length);
436 if (fade_interval_end > fade_interval_start) {
437 /* (part of the) the fade out is in this buffer */
439 nframes_t limit = fade_interval_end - fade_interval_start;
440 nframes_t curve_offset = fade_interval_start - (_length-fade_out_length);
441 nframes_t fade_offset = fade_interval_start - internal_offset;
443 _fade_out->curve().get_vector (curve_offset,curve_offset+limit, gain_buffer, limit);
445 for (nframes_t n = 0, m = fade_offset; n < limit; ++n, ++m) {
446 mixdown_buffer[m] *= gain_buffer[n];
452 /* Regular gain curves */
454 if (envelope_active()) {
455 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
457 if (_scale_amplitude != 1.0f) {
458 for (nframes_t n = 0; n < to_read; ++n) {
459 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
462 for (nframes_t n = 0; n < to_read; ++n) {
463 mixdown_buffer[n] *= gain_buffer[n];
466 } else if (_scale_amplitude != 1.0f) {
467 Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
474 /* gack. the things we do for users.
479 for (nframes_t n = 0; n < to_read; ++n) {
480 buf[n] += mixdown_buffer[n];
489 AudioRegion::state (bool full)
491 XMLNode& node (Region::state (full));
495 LocaleGuard lg (X_("POSIX"));
497 node.add_property ("flags", enum_2_string (_flags));
499 snprintf (buf, sizeof(buf), "%.12g", _scale_amplitude);
500 node.add_property ("scale-gain", buf);
502 // XXX these should move into Region
504 for (uint32_t n=0; n < _sources.size(); ++n) {
505 snprintf (buf2, sizeof(buf2), "source-%d", n);
506 _sources[n]->id().print (buf, sizeof (buf));
507 node.add_property (buf2, buf);
510 for (uint32_t n=0; n < _master_sources.size(); ++n) {
511 snprintf (buf2, sizeof(buf2), "master-source-%d", n);
512 _master_sources[n]->id().print (buf, sizeof (buf));
513 node.add_property (buf2, buf);
516 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
517 node.add_property ("channels", buf);
521 child = node.add_child (X_("FadeIn"));
523 if ((_flags & DefaultFadeIn)) {
524 child->add_property (X_("default"), X_("yes"));
526 child->add_child_nocopy (_fade_in->get_state ());
529 child->add_property (X_("active"), _fade_in_disabled ? X_("no") : X_("yes"));
531 child = node.add_child (X_("FadeOut"));
533 if ((_flags & DefaultFadeOut)) {
534 child->add_property (X_("default"), X_("yes"));
536 child->add_child_nocopy (_fade_out->get_state ());
539 child->add_property (X_("active"), _fade_out_disabled ? X_("no") : X_("yes"));
542 child = node.add_child ("Envelope");
545 bool default_env = false;
547 // If there are only two points, the points are in the start of the region and the end of the region
548 // so, if they are both at 1.0f, that means the default region.
550 if (_envelope->size() == 2 &&
551 _envelope->front()->value == 1.0f &&
552 _envelope->back()->value==1.0f) {
553 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
559 child->add_property ("default", "yes");
561 child->add_child_nocopy (_envelope->get_state ());
565 child->add_property ("default", "yes");
568 if (full && _extra_xml) {
569 node.add_child_copy (*_extra_xml);
576 AudioRegion::set_live_state (const XMLNode& node, Change& what_changed, bool send)
578 const XMLNodeList& nlist = node.children();
579 const XMLProperty *prop;
580 LocaleGuard lg (X_("POSIX"));
582 Region::set_live_state (node, what_changed, false);
584 uint32_t old_flags = _flags;
586 if ((prop = node.property ("flags")) != 0) {
587 _flags = Flag (string_2_enum (prop->value(), _flags));
589 //_flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16));
591 _flags = Flag (_flags & ~Region::LeftOfSplit);
592 _flags = Flag (_flags & ~Region::RightOfSplit);
595 if ((old_flags ^ _flags) & Muted) {
596 what_changed = Change (what_changed|MuteChanged);
598 if ((old_flags ^ _flags) & Opaque) {
599 what_changed = Change (what_changed|OpacityChanged);
601 if ((old_flags ^ _flags) & Locked) {
602 what_changed = Change (what_changed|LockChanged);
605 if ((prop = node.property ("scale-gain")) != 0) {
606 _scale_amplitude = atof (prop->value().c_str());
607 what_changed = Change (what_changed|ScaleAmplitudeChanged);
609 _scale_amplitude = 1.0;
612 /* Now find envelope description and other misc child items */
614 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
621 if (child->name() == "Envelope") {
625 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child)) {
626 set_default_envelope ();
629 _envelope->set_max_xval (_length);
630 _envelope->truncate_end (_length);
632 } else if (child->name() == "FadeIn") {
636 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
637 set_default_fade_in ();
639 XMLNode* grandchild = child->child ("AutomationList");
641 _fade_in->set_state (*grandchild);
645 if ((prop = child->property ("active")) != 0) {
646 if (prop->value() == "yes") {
647 set_fade_in_active (true);
649 set_fade_in_active (true);
653 } else if (child->name() == "FadeOut") {
657 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
658 set_default_fade_out ();
660 XMLNode* grandchild = child->child ("AutomationList");
662 _fade_out->set_state (*grandchild);
666 if ((prop = child->property ("active")) != 0) {
667 if (prop->value() == "yes") {
668 set_fade_out_active (true);
670 set_fade_out_active (false);
678 send_change (what_changed);
685 AudioRegion::set_state (const XMLNode& node)
687 /* Region::set_state() calls the virtual set_live_state(),
688 which will get us back to AudioRegion::set_live_state()
689 to handle the relevant stuff.
692 return Region::set_state (node);
696 AudioRegion::set_fade_in_shape (FadeShape shape)
698 set_fade_in (shape, (nframes_t) _fade_in->back()->when);
702 AudioRegion::set_fade_out_shape (FadeShape shape)
704 set_fade_out (shape, (nframes_t) _fade_out->back()->when);
708 AudioRegion::set_fade_in (FadeShape shape, nframes_t len)
715 _fade_in->fast_simple_add (0.0, 0.0);
716 _fade_in->fast_simple_add (len, 1.0);
720 _fade_in->fast_simple_add (0, 0);
721 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
722 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
723 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
724 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
725 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
726 _fade_in->fast_simple_add (len, 1);
730 _fade_in->fast_simple_add (0, 0);
731 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
732 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
733 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
734 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
735 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
736 _fade_in->fast_simple_add (len * 0.767281, 1);
737 _fade_in->fast_simple_add (len, 1);
741 _fade_in->fast_simple_add (0, 0);
742 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
743 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
744 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
745 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
746 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
747 _fade_in->fast_simple_add (len, 1);
751 _fade_in->fast_simple_add (0, 0);
752 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
753 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
754 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
755 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
756 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
757 _fade_in->fast_simple_add (len, 1);
762 _fade_in_shape = shape;
764 send_change (FadeInChanged);
768 AudioRegion::set_fade_out (FadeShape shape, nframes_t len)
770 _fade_out->freeze ();
775 _fade_out->fast_simple_add (len * 0, 1);
776 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
777 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
778 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
779 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
780 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
781 _fade_out->fast_simple_add (len * 1, 0);
785 _fade_out->fast_simple_add (len * 0, 1);
786 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
787 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
788 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
789 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
790 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
791 _fade_out->fast_simple_add (len * 1, 0);
795 _fade_out->fast_simple_add (len * 0, 1);
796 _fade_out->fast_simple_add (len * 0.305556, 1);
797 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
798 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
799 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
800 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
801 _fade_out->fast_simple_add (len * 1, 0);
805 _fade_out->fast_simple_add (len * 0, 1);
806 _fade_out->fast_simple_add (len * 0.080645, 0.730556);
807 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
808 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
809 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
810 _fade_out->fast_simple_add (len * 1, 0);
814 _fade_out->fast_simple_add (len * 0, 1);
815 _fade_out->fast_simple_add (len * 1, 0);
820 _fade_out_shape = shape;
822 send_change (FadeOutChanged);
826 AudioRegion::set_fade_in_length (nframes_t len)
832 bool changed = _fade_in->extend_to (len);
835 _flags = Flag (_flags & ~DefaultFadeIn);
836 send_change (FadeInChanged);
841 AudioRegion::set_fade_out_length (nframes_t len)
847 bool changed = _fade_out->extend_to (len);
850 _flags = Flag (_flags & ~DefaultFadeOut);
851 send_change (FadeOutChanged);
856 AudioRegion::set_fade_in_active (bool yn)
858 if (yn == (_flags & FadeIn)) {
862 _flags = Flag (_flags|FadeIn);
864 _flags = Flag (_flags & ~FadeIn);
867 send_change (FadeInActiveChanged);
871 AudioRegion::set_fade_out_active (bool yn)
873 if (yn == (_flags & FadeOut)) {
877 _flags = Flag (_flags | FadeOut);
879 _flags = Flag (_flags & ~FadeOut);
882 send_change (FadeOutActiveChanged);
886 AudioRegion::fade_in_is_default () const
888 return _fade_in_shape == Linear && _fade_in->back()->when == 64;
892 AudioRegion::fade_out_is_default () const
894 return _fade_out_shape == Linear && _fade_out->back()->when == 64;
898 AudioRegion::set_default_fade_in ()
900 set_fade_in (Linear, 64);
904 AudioRegion::set_default_fade_out ()
906 set_fade_out (Linear, 64);
910 AudioRegion::set_default_fades ()
912 _fade_in_disabled = 0;
913 _fade_out_disabled = 0;
914 set_default_fade_in ();
915 set_default_fade_out ();
919 AudioRegion::set_default_envelope ()
921 _envelope->freeze ();
923 _envelope->fast_simple_add (0, 1.0f);
924 _envelope->fast_simple_add (_length, 1.0f);
929 AudioRegion::recompute_at_end ()
931 /* our length has changed. recompute a new final point by interpolating
932 based on the the existing curve.
935 _envelope->freeze ();
936 _envelope->truncate_end (_length);
937 _envelope->set_max_xval (_length);
940 if (_fade_in->back()->when > _length) {
941 _fade_in->extend_to (_length);
942 send_change (FadeInChanged);
945 if (_fade_out->back()->when > _length) {
946 _fade_out->extend_to (_length);
947 send_change (FadeOutChanged);
952 AudioRegion::recompute_at_start ()
954 /* as above, but the shift was from the front */
956 _envelope->truncate_start (_length);
958 if (_fade_in->back()->when > _length) {
959 _fade_in->extend_to (_length);
960 send_change (FadeInChanged);
963 if (_fade_out->back()->when > _length) {
964 _fade_out->extend_to (_length);
965 send_change (FadeOutChanged);
970 AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<AudioRegion> >& v) const
976 if (_sources.size() < 2) {
982 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
989 if (_sources.size() == 2) {
997 new_name += ('0' + n + 1);
1000 /* create a copy with just one source. prevent if from being thought of as "whole file" even if
1001 it covers the entire source file(s).
1004 Flag f = Flag (_flags & ~WholeFile);
1006 boost::shared_ptr<Region> r = RegionFactory::create (srcs, _start, _length, new_name, _layer, f);
1007 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r);
1018 AudioRegion::read_raw_internal (Sample* buf, nframes_t pos, nframes_t cnt) const
1020 return audio_source()->read (buf, pos, cnt);
1025 AudioRegion::exportme (Session& session, AudioExportSpecification& spec)
1027 const nframes_t blocksize = 4096;
1031 spec.channels = _sources.size();
1033 if (spec.prepare (blocksize, session.frame_rate())) {
1038 spec.total_frames = _length;
1040 while (spec.pos < _length && !spec.stop) {
1043 /* step 1: interleave */
1045 to_read = min (_length - spec.pos, blocksize);
1047 if (spec.channels == 1) {
1049 if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
1055 Sample buf[blocksize];
1057 for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1059 if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
1063 for (nframes_t x = 0; x < to_read; ++x) {
1064 spec.dataF[chan+(x*spec.channels)] = buf[x];
1069 if (spec.process (to_read)) {
1073 spec.pos += to_read;
1074 spec.progress = (double) spec.pos /_length;
1081 spec.running = false;
1082 spec.status = status;
1089 AudioRegion::set_scale_amplitude (gain_t g)
1091 boost::shared_ptr<Playlist> pl (playlist());
1093 _scale_amplitude = g;
1095 /* tell the diskstream we're in */
1101 /* tell everybody else */
1103 send_change (ScaleAmplitudeChanged);
1107 AudioRegion::normalize_to (float target_dB)
1109 const nframes_t blocksize = 64 * 1024;
1110 Sample buf[blocksize];
1115 gain_t target = dB_to_coefficient (target_dB);
1117 if (target == 1.0f) {
1118 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1119 that we may have clipped.
1121 target -= FLT_EPSILON;
1125 fend = _start + _length;
1127 /* first pass: find max amplitude */
1129 while (fpos < fend) {
1133 to_read = min (fend - fpos, blocksize);
1135 for (n = 0; n < n_channels(); ++n) {
1139 if (read_raw_internal (buf, fpos, to_read) != to_read) {
1143 maxamp = compute_peak (buf, to_read, maxamp);
1149 if (maxamp == 0.0f) {
1150 /* don't even try */
1154 if (maxamp == target) {
1155 /* we can't do anything useful */
1159 /* compute scale factor */
1161 _scale_amplitude = target/maxamp;
1163 /* tell the diskstream we're in */
1165 boost::shared_ptr<Playlist> pl (playlist());
1171 /* tell everybody else */
1173 send_change (ScaleAmplitudeChanged);
1177 AudioRegion::fade_in_changed ()
1179 send_change (FadeInChanged);
1183 AudioRegion::fade_out_changed ()
1185 send_change (FadeOutChanged);
1189 AudioRegion::envelope_changed ()
1191 send_change (EnvelopeChanged);
1195 AudioRegion::suspend_fade_in ()
1197 if (++_fade_in_disabled == 1) {
1198 if (fade_in_is_default()) {
1199 set_fade_in_active (false);
1205 AudioRegion::resume_fade_in ()
1207 if (--_fade_in_disabled == 0 && _fade_in_disabled) {
1208 set_fade_in_active (true);
1213 AudioRegion::suspend_fade_out ()
1215 if (++_fade_out_disabled == 1) {
1216 if (fade_out_is_default()) {
1217 set_fade_out_active (false);
1223 AudioRegion::resume_fade_out ()
1225 if (--_fade_out_disabled == 0 &&_fade_out_disabled) {
1226 set_fade_out_active (true);
1231 AudioRegion::speed_mismatch (float sr) const
1233 if (_sources.empty()) {
1234 /* impossible, but ... */
1238 float fsr = audio_source()->sample_rate();
1244 AudioRegion::source_offset_changed ()
1246 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1248 if (afs && afs->destructive()) {
1249 // set_start (source()->natural_position(), this);
1250 set_position (source()->natural_position(), this);
1254 boost::shared_ptr<AudioSource>
1255 AudioRegion::audio_source (uint32_t n) const
1257 // Guaranteed to succeed (use a static cast for speed?)
1258 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1262 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1264 boost::shared_ptr<Playlist> pl = playlist();
1270 if (_valid_transients && !force_new) {
1271 results = _transients;
1275 SourceList::iterator s;
1277 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1278 if (!(*s)->has_been_analysed()) {
1279 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1284 if (s == _sources.end()) {
1285 /* all sources are analyzed, merge data from each one */
1287 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1289 /* find the set of transients within the bounds of this region */
1291 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1292 (*s)->transients.end(),
1295 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1296 (*s)->transients.end(),
1301 results.insert (results.end(), low, high);
1304 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1306 /* translate all transients to current position */
1308 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1313 _transients = results;
1314 _valid_transients = true;
1319 cerr << "startup analysis of " << _name << endl;
1321 TransientDetector t (pl->session().frame_rate());
1322 bool existing_results = !results.empty();
1324 _transients.clear ();
1325 _valid_transients = false;
1327 for (uint32_t i = 0; i < n_channels(); ++i) {
1329 AnalysisFeatureList these_results;
1333 cerr << "working on channel " << i << endl;
1335 if (t.run ("", this, i, these_results)) {
1341 /* translate all transients to give absolute position */
1343 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1349 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1352 if (!results.empty()) {
1353 if (existing_results) {
1355 /* merge our transients into the existing ones, then clean up
1359 results.insert (results.end(), _transients.begin(), _transients.end());
1360 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1363 /* make sure ours are clean too */
1365 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1369 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1370 results = _transients;
1373 _valid_transients = true;
1380 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)
1382 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (nframes_t) npeaks, (nframes_t) start, (nframes_t) cnt, n_chan,samples_per_unit);
1385 uint32_t region_length_from_c (void *arg)
1388 return ((AudioRegion *) arg)->length();
1391 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1393 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;