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;
69 valid_transients = false;
72 set_default_envelope ();
74 listen_to_my_curves ();
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))
127 /** Create a new AudioRegion, that is part of an existing one */
128 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
129 : Region (other, offset, length, name, layer, flags)
130 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
131 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
132 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
134 set<boost::shared_ptr<Source> > unique_srcs;
136 for (SourceList::const_iterator i= other->_sources.begin(); i != other->_sources.end(); ++i) {
137 _sources.push_back (*i);
139 pair<set<boost::shared_ptr<Source> >::iterator,bool> result;
141 result = unique_srcs.insert (*i);
144 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
146 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
151 /* return to default fades if the existing ones are too long */
154 if (_flags & LeftOfSplit) {
155 if (_fade_in->back()->when >= _length) {
156 set_default_fade_in ();
158 _fade_in_disabled = other->_fade_in_disabled;
160 set_default_fade_out ();
161 _flags = Flag (_flags & ~Region::LeftOfSplit);
164 if (_flags & RightOfSplit) {
165 if (_fade_out->back()->when >= _length) {
166 set_default_fade_out ();
168 _fade_out_disabled = other->_fade_out_disabled;
170 set_default_fade_in ();
171 _flags = Flag (_flags & ~Region::RightOfSplit);
174 _scale_amplitude = other->_scale_amplitude;
175 valid_transients = false;
177 assert(_type == DataType::AUDIO);
180 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
182 , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0))
183 , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0))
184 , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0))
186 _scale_amplitude = other->_scale_amplitude;
187 valid_transients = false;
188 _envelope = other->_envelope;
190 set_default_fades ();
192 listen_to_my_curves ();
194 assert(_type == DataType::AUDIO);
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));
209 valid_transients = false;
211 if (set_state (node)) {
212 throw failed_constructor();
215 assert(_type == DataType::AUDIO);
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);
233 AudioRegion::~AudioRegion ()
238 AudioRegion::invalidate_transients ()
240 valid_transients = false;
241 _transients.clear ();
245 AudioRegion::listen_to_my_curves ()
247 _envelope->StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
248 _fade_in->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_in_changed));
249 _fade_out->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_out_changed));
253 AudioRegion::set_envelope_active (bool yn)
255 if (envelope_active() != yn) {
258 snprintf (buf, sizeof (buf), "envelope active");
259 _flags = Flag (_flags|EnvelopeActive);
261 snprintf (buf, sizeof (buf), "envelope off");
262 _flags = Flag (_flags & ~EnvelopeActive);
264 send_change (EnvelopeActiveChanged);
269 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
271 if (chan_n >= _sources.size()) {
275 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
278 if (_scale_amplitude != 1.0) {
279 for (nframes_t n = 0; n < npeaks; ++n) {
280 buf[n].max *= _scale_amplitude;
281 buf[n].min *= _scale_amplitude;
289 AudioRegion::read (Sample* buf, nframes64_t position, nframes64_t cnt, int channel) const
291 /* raw read, no fades, no gain, nada */
292 return _read_at (_sources, buf, 0, 0, _position + position, cnt, channel, 0, 0, true);
296 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
298 uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const
300 /* regular diskstream/butler read complete with fades etc */
301 return _read_at (_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, read_frames, skip_frames, false);
305 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
306 nframes_t cnt, uint32_t chan_n) const
308 return _read_at (_master_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0);
312 AudioRegion::_read_at (const SourceList& srcs, Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
313 nframes_t position, nframes_t cnt,
315 nframes_t read_frames,
316 nframes_t skip_frames,
319 nframes_t internal_offset;
320 nframes_t buf_offset;
323 if (muted() && !raw) {
324 return 0; /* read nothing */
327 /* precondition: caller has verified that we cover the desired section */
329 if (position < _position) {
331 buf_offset = _position - position;
334 internal_offset = position - _position;
338 if (internal_offset >= _length) {
339 return 0; /* read nothing */
342 if ((to_read = min (cnt, _length - internal_offset)) == 0) {
343 return 0; /* read nothing */
346 if (opaque() || raw) {
347 /* overwrite whatever is there */
348 mixdown_buffer = buf + buf_offset;
350 mixdown_buffer += buf_offset;
354 _read_data_count = 0;
357 if (chan_n < n_channels()) {
359 boost::shared_ptr<AudioSource> src = audio_source(chan_n);
360 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
361 return 0; /* "read nothing" */
365 _read_data_count += src->read_data_count();
370 /* track is N-channel, this region has less channels; silence the ones
374 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
376 /* no fades required */
387 if (_flags & FadeIn) {
389 nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
391 /* see if this read is within the fade in */
393 if (internal_offset < fade_in_length) {
397 limit = min (to_read, fade_in_length - internal_offset);
399 _fade_in->curve().get_vector (internal_offset, internal_offset+limit, gain_buffer, limit);
401 for (nframes_t n = 0; n < limit; ++n) {
402 mixdown_buffer[n] *= gain_buffer[n];
409 if (_flags & FadeOut) {
411 /* see if some part of this read is within the fade out */
413 /* ................. >| REGION
419 _length - fade_out_length
422 ^internal_offset + to_read
424 we need the intersection of [internal_offset,internal_offset+to_read] with
425 [_length - fade_out_length, _length]
430 nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
431 nframes_t fade_interval_start = max(internal_offset, _length-fade_out_length);
432 nframes_t fade_interval_end = min(internal_offset + to_read, _length);
434 if (fade_interval_end > fade_interval_start) {
435 /* (part of the) the fade out is in this buffer */
437 nframes_t limit = fade_interval_end - fade_interval_start;
438 nframes_t curve_offset = fade_interval_start - (_length-fade_out_length);
439 nframes_t fade_offset = fade_interval_start - internal_offset;
441 _fade_out->curve().get_vector (curve_offset,curve_offset+limit, gain_buffer, limit);
443 for (nframes_t n = 0, m = fade_offset; n < limit; ++n, ++m) {
444 mixdown_buffer[m] *= gain_buffer[n];
450 /* Regular gain curves */
452 if (envelope_active()) {
453 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
455 if (_scale_amplitude != 1.0f) {
456 for (nframes_t n = 0; n < to_read; ++n) {
457 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
460 for (nframes_t n = 0; n < to_read; ++n) {
461 mixdown_buffer[n] *= gain_buffer[n];
464 } else if (_scale_amplitude != 1.0f) {
465 Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
472 /* gack. the things we do for users.
477 for (nframes_t n = 0; n < to_read; ++n) {
478 buf[n] += mixdown_buffer[n];
487 AudioRegion::state (bool full)
489 XMLNode& node (Region::state (full));
493 LocaleGuard lg (X_("POSIX"));
495 node.add_property ("flags", enum_2_string (_flags));
497 snprintf (buf, sizeof(buf), "%.12g", _scale_amplitude);
498 node.add_property ("scale-gain", buf);
500 // XXX these should move into Region
502 for (uint32_t n=0; n < _sources.size(); ++n) {
503 snprintf (buf2, sizeof(buf2), "source-%d", n);
504 _sources[n]->id().print (buf, sizeof (buf));
505 node.add_property (buf2, buf);
508 for (uint32_t n=0; n < _master_sources.size(); ++n) {
509 snprintf (buf2, sizeof(buf2), "master-source-%d", n);
510 _master_sources[n]->id().print (buf, sizeof (buf));
511 node.add_property (buf2, buf);
514 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
515 node.add_property ("channels", buf);
519 child = node.add_child (X_("FadeIn"));
521 if ((_flags & DefaultFadeIn)) {
522 child->add_property (X_("default"), X_("yes"));
524 child->add_child_nocopy (_fade_in->get_state ());
527 child->add_property (X_("active"), _fade_in_disabled ? X_("no") : X_("yes"));
529 child = node.add_child (X_("FadeOut"));
531 if ((_flags & DefaultFadeOut)) {
532 child->add_property (X_("default"), X_("yes"));
534 child->add_child_nocopy (_fade_out->get_state ());
537 child->add_property (X_("active"), _fade_out_disabled ? X_("no") : X_("yes"));
540 child = node.add_child ("Envelope");
543 bool default_env = false;
545 // If there are only two points, the points are in the start of the region and the end of the region
546 // so, if they are both at 1.0f, that means the default region.
548 if (_envelope->size() == 2 &&
549 _envelope->front()->value == 1.0f &&
550 _envelope->back()->value==1.0f) {
551 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
557 child->add_property ("default", "yes");
559 child->add_child_nocopy (_envelope->get_state ());
563 child->add_property ("default", "yes");
566 if (full && _extra_xml) {
567 node.add_child_copy (*_extra_xml);
574 AudioRegion::set_live_state (const XMLNode& node, Change& what_changed, bool send)
576 const XMLNodeList& nlist = node.children();
577 const XMLProperty *prop;
578 LocaleGuard lg (X_("POSIX"));
580 Region::set_live_state (node, what_changed, false);
582 uint32_t old_flags = _flags;
584 if ((prop = node.property ("flags")) != 0) {
585 _flags = Flag (string_2_enum (prop->value(), _flags));
587 //_flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16));
589 _flags = Flag (_flags & ~Region::LeftOfSplit);
590 _flags = Flag (_flags & ~Region::RightOfSplit);
593 if ((old_flags ^ _flags) & Muted) {
594 what_changed = Change (what_changed|MuteChanged);
596 if ((old_flags ^ _flags) & Opaque) {
597 what_changed = Change (what_changed|OpacityChanged);
599 if ((old_flags ^ _flags) & Locked) {
600 what_changed = Change (what_changed|LockChanged);
603 if ((prop = node.property ("scale-gain")) != 0) {
604 _scale_amplitude = atof (prop->value().c_str());
605 what_changed = Change (what_changed|ScaleAmplitudeChanged);
607 _scale_amplitude = 1.0;
610 /* Now find envelope description and other misc child items */
612 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
619 if (child->name() == "Envelope") {
623 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child)) {
624 set_default_envelope ();
627 _envelope->set_max_xval (_length);
628 _envelope->truncate_end (_length);
630 } else if (child->name() == "FadeIn") {
634 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
635 set_default_fade_in ();
637 XMLNode* grandchild = child->child ("AutomationList");
639 _fade_in->set_state (*grandchild);
643 if ((prop = child->property ("active")) != 0) {
644 if (prop->value() == "yes") {
645 set_fade_in_active (true);
647 set_fade_in_active (true);
651 } else if (child->name() == "FadeOut") {
655 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
656 set_default_fade_out ();
658 XMLNode* grandchild = child->child ("AutomationList");
660 _fade_out->set_state (*grandchild);
664 if ((prop = child->property ("active")) != 0) {
665 if (prop->value() == "yes") {
666 set_fade_out_active (true);
668 set_fade_out_active (false);
676 send_change (what_changed);
683 AudioRegion::set_state (const XMLNode& node)
685 /* Region::set_state() calls the virtual set_live_state(),
686 which will get us back to AudioRegion::set_live_state()
687 to handle the relevant stuff.
690 return Region::set_state (node);
694 AudioRegion::set_fade_in_shape (FadeShape shape)
696 set_fade_in (shape, (nframes_t) _fade_in->back()->when);
700 AudioRegion::set_fade_out_shape (FadeShape shape)
702 set_fade_out (shape, (nframes_t) _fade_out->back()->when);
706 AudioRegion::set_fade_in (FadeShape shape, nframes_t len)
713 _fade_in->fast_simple_add (0.0, 0.0);
714 _fade_in->fast_simple_add (len, 1.0);
718 _fade_in->fast_simple_add (0, 0);
719 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
720 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
721 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
722 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
723 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
724 _fade_in->fast_simple_add (len, 1);
728 _fade_in->fast_simple_add (0, 0);
729 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
730 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
731 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
732 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
733 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
734 _fade_in->fast_simple_add (len * 0.767281, 1);
735 _fade_in->fast_simple_add (len, 1);
739 _fade_in->fast_simple_add (0, 0);
740 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
741 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
742 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
743 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
744 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
745 _fade_in->fast_simple_add (len, 1);
749 _fade_in->fast_simple_add (0, 0);
750 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
751 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
752 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
753 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
754 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
755 _fade_in->fast_simple_add (len, 1);
760 _fade_in_shape = shape;
762 send_change (FadeInChanged);
766 AudioRegion::set_fade_out (FadeShape shape, nframes_t len)
768 _fade_out->freeze ();
773 _fade_out->fast_simple_add (len * 0, 1);
774 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
775 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
776 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
777 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
778 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
779 _fade_out->fast_simple_add (len * 1, 0);
783 _fade_out->fast_simple_add (len * 0, 1);
784 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
785 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
786 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
787 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
788 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
789 _fade_out->fast_simple_add (len * 1, 0);
793 _fade_out->fast_simple_add (len * 0, 1);
794 _fade_out->fast_simple_add (len * 0.305556, 1);
795 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
796 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
797 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
798 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
799 _fade_out->fast_simple_add (len * 1, 0);
803 _fade_out->fast_simple_add (len * 0, 1);
804 _fade_out->fast_simple_add (len * 0.080645, 0.730556);
805 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
806 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
807 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
808 _fade_out->fast_simple_add (len * 1, 0);
812 _fade_out->fast_simple_add (len * 0, 1);
813 _fade_out->fast_simple_add (len * 1, 0);
818 _fade_out_shape = shape;
820 send_change (FadeOutChanged);
824 AudioRegion::set_fade_in_length (nframes_t len)
830 bool changed = _fade_in->extend_to (len);
833 _flags = Flag (_flags & ~DefaultFadeIn);
834 send_change (FadeInChanged);
839 AudioRegion::set_fade_out_length (nframes_t len)
845 bool changed = _fade_out->extend_to (len);
848 _flags = Flag (_flags & ~DefaultFadeOut);
849 send_change (FadeOutChanged);
854 AudioRegion::set_fade_in_active (bool yn)
856 if (yn == (_flags & FadeIn)) {
860 _flags = Flag (_flags|FadeIn);
862 _flags = Flag (_flags & ~FadeIn);
865 send_change (FadeInActiveChanged);
869 AudioRegion::set_fade_out_active (bool yn)
871 if (yn == (_flags & FadeOut)) {
875 _flags = Flag (_flags | FadeOut);
877 _flags = Flag (_flags & ~FadeOut);
880 send_change (FadeOutActiveChanged);
884 AudioRegion::fade_in_is_default () const
886 return _fade_in_shape == Linear && _fade_in->back()->when == 64;
890 AudioRegion::fade_out_is_default () const
892 return _fade_out_shape == Linear && _fade_out->back()->when == 64;
896 AudioRegion::set_default_fade_in ()
898 set_fade_in (Linear, 64);
902 AudioRegion::set_default_fade_out ()
904 set_fade_out (Linear, 64);
908 AudioRegion::set_default_fades ()
910 _fade_in_disabled = 0;
911 _fade_out_disabled = 0;
912 set_default_fade_in ();
913 set_default_fade_out ();
917 AudioRegion::set_default_envelope ()
919 _envelope->freeze ();
921 _envelope->fast_simple_add (0, 1.0f);
922 _envelope->fast_simple_add (_length, 1.0f);
927 AudioRegion::recompute_at_end ()
929 /* our length has changed. recompute a new final point by interpolating
930 based on the the existing curve.
933 _envelope->freeze ();
934 _envelope->truncate_end (_length);
935 _envelope->set_max_xval (_length);
938 if (_fade_in->back()->when > _length) {
939 _fade_in->extend_to (_length);
940 send_change (FadeInChanged);
943 if (_fade_out->back()->when > _length) {
944 _fade_out->extend_to (_length);
945 send_change (FadeOutChanged);
950 AudioRegion::recompute_at_start ()
952 /* as above, but the shift was from the front */
954 _envelope->truncate_start (_length);
956 if (_fade_in->back()->when > _length) {
957 _fade_in->extend_to (_length);
958 send_change (FadeInChanged);
961 if (_fade_out->back()->when > _length) {
962 _fade_out->extend_to (_length);
963 send_change (FadeOutChanged);
968 AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<AudioRegion> >& v) const
974 if (_sources.size() < 2) {
980 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
987 if (_sources.size() == 2) {
995 new_name += ('0' + n + 1);
998 /* create a copy with just one source. prevent if from being thought of as "whole file" even if
999 it covers the entire source file(s).
1002 Flag f = Flag (_flags & ~WholeFile);
1004 boost::shared_ptr<Region> r = RegionFactory::create (srcs, _start, _length, new_name, _layer, f);
1005 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r);
1016 AudioRegion::read_raw_internal (Sample* buf, nframes_t pos, nframes_t cnt) const
1018 return audio_source()->read (buf, pos, cnt);
1023 AudioRegion::exportme (Session& session, AudioExportSpecification& spec)
1025 const nframes_t blocksize = 4096;
1029 spec.channels = _sources.size();
1031 if (spec.prepare (blocksize, session.frame_rate())) {
1036 spec.total_frames = _length;
1038 while (spec.pos < _length && !spec.stop) {
1041 /* step 1: interleave */
1043 to_read = min (_length - spec.pos, blocksize);
1045 if (spec.channels == 1) {
1047 if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
1053 Sample buf[blocksize];
1055 for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1057 if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
1061 for (nframes_t x = 0; x < to_read; ++x) {
1062 spec.dataF[chan+(x*spec.channels)] = buf[x];
1067 if (spec.process (to_read)) {
1071 spec.pos += to_read;
1072 spec.progress = (double) spec.pos /_length;
1079 spec.running = false;
1080 spec.status = status;
1087 AudioRegion::set_scale_amplitude (gain_t g)
1089 boost::shared_ptr<Playlist> pl (playlist());
1091 _scale_amplitude = g;
1093 /* tell the diskstream we're in */
1099 /* tell everybody else */
1101 send_change (ScaleAmplitudeChanged);
1105 AudioRegion::normalize_to (float target_dB)
1107 const nframes_t blocksize = 64 * 1024;
1108 Sample buf[blocksize];
1113 gain_t target = dB_to_coefficient (target_dB);
1115 if (target == 1.0f) {
1116 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1117 that we may have clipped.
1119 target -= FLT_EPSILON;
1123 fend = _start + _length;
1125 /* first pass: find max amplitude */
1127 while (fpos < fend) {
1131 to_read = min (fend - fpos, blocksize);
1133 for (n = 0; n < n_channels(); ++n) {
1137 if (read_raw_internal (buf, fpos, to_read) != to_read) {
1141 maxamp = compute_peak (buf, to_read, maxamp);
1147 if (maxamp == 0.0f) {
1148 /* don't even try */
1152 if (maxamp == target) {
1153 /* we can't do anything useful */
1157 /* compute scale factor */
1159 _scale_amplitude = target/maxamp;
1161 /* tell the diskstream we're in */
1163 boost::shared_ptr<Playlist> pl (playlist());
1169 /* tell everybody else */
1171 send_change (ScaleAmplitudeChanged);
1175 AudioRegion::fade_in_changed ()
1177 send_change (FadeInChanged);
1181 AudioRegion::fade_out_changed ()
1183 send_change (FadeOutChanged);
1187 AudioRegion::envelope_changed ()
1189 send_change (EnvelopeChanged);
1193 AudioRegion::suspend_fade_in ()
1195 if (++_fade_in_disabled == 1) {
1196 if (fade_in_is_default()) {
1197 set_fade_in_active (false);
1203 AudioRegion::resume_fade_in ()
1205 if (--_fade_in_disabled == 0 && _fade_in_disabled) {
1206 set_fade_in_active (true);
1211 AudioRegion::suspend_fade_out ()
1213 if (++_fade_out_disabled == 1) {
1214 if (fade_out_is_default()) {
1215 set_fade_out_active (false);
1221 AudioRegion::resume_fade_out ()
1223 if (--_fade_out_disabled == 0 &&_fade_out_disabled) {
1224 set_fade_out_active (true);
1229 AudioRegion::speed_mismatch (float sr) const
1231 if (_sources.empty()) {
1232 /* impossible, but ... */
1236 float fsr = audio_source()->sample_rate();
1242 AudioRegion::source_offset_changed ()
1244 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1246 if (afs && afs->destructive()) {
1247 // set_start (source()->natural_position(), this);
1248 set_position (source()->natural_position(), this);
1252 boost::shared_ptr<AudioSource>
1253 AudioRegion::audio_source (uint32_t n) const
1255 // Guaranteed to succeed (use a static cast for speed?)
1256 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1260 AudioRegion::cleanup_transients (vector<nframes64_t>& t)
1262 sort (t.begin(), t.end());
1264 /* remove duplicates or other things that are too close */
1266 vector<nframes64_t>::iterator i = t.begin();
1267 nframes64_t curr = (*i);
1269 /* XXX force a 3msec gap - use a config variable */
1271 nframes64_t gap_frames = (nframes64_t) floor (3.0 * (playlist()->session().frame_rate() / 1000.0));
1275 while (i != t.end()) {
1276 if (((*i) == curr) || (((*i) - curr) < gap_frames)) {
1286 AudioRegion::get_transients (vector<nframes64_t>& results, bool force_new)
1292 if (valid_transients && !force_new) {
1293 results = _transients;
1297 TransientDetector t (playlist()->session().frame_rate());
1298 bool existing_results = !results.empty();
1300 _transients.clear ();
1301 valid_transients = false;
1303 for (uint32_t i = 0; i < n_channels(); ++i) {
1305 vector<nframes64_t> these_results;
1309 if (t.run ("", this, i, these_results)) {
1313 /* translate all transients to give absolute position */
1315 for (vector<nframes64_t>::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1321 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1324 if (!results.empty()) {
1325 if (existing_results) {
1327 /* merge our transients into the existing ones, then clean up
1331 results.insert (results.end(), _transients.begin(), _transients.end());
1332 cleanup_transients (results);
1335 /* make sure ours are clean too */
1337 cleanup_transients (_transients);
1340 valid_transients = true;
1348 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)
1350 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (nframes_t) npeaks, (nframes_t) start, (nframes_t) cnt, n_chan,samples_per_unit);
1353 uint32_t region_length_from_c (void *arg)
1356 return ((AudioRegion *) arg)->length();
1359 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1361 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;