2 Copyright (C) 2000-2001 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/audiofilter.h>
44 #include <ardour/audiofilesource.h>
45 #include <ardour/region_factory.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();
65 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length)
66 : Region (start, length, PBD::basename_nosuffix(src->name()), 0, Region::Flag(Region::DefaultFlags|Region::External)),
67 _fade_in (0.0, 2.0, 1.0, false),
68 _fade_out (0.0, 2.0, 1.0, false),
69 _envelope (0.0, 2.0, 1.0, false)
71 /* basic AudioRegion constructor */
73 sources.push_back (src);
74 master_sources.push_back (src);
75 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
77 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
79 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
82 _scale_amplitude = 1.0;
85 set_default_envelope ();
87 listen_to_my_curves ();
88 listen_to_my_sources ();
91 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
92 : Region (start, length, name, layer, flags),
93 _fade_in (0.0, 2.0, 1.0, false),
94 _fade_out (0.0, 2.0, 1.0, false),
95 _envelope (0.0, 2.0, 1.0, false)
97 /* basic AudioRegion constructor */
99 sources.push_back (src);
100 master_sources.push_back (src);
101 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
103 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
105 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
108 _scale_amplitude = 1.0;
110 set_default_fades ();
111 set_default_envelope ();
113 listen_to_my_curves ();
114 listen_to_my_sources ();
117 AudioRegion::AudioRegion (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
118 : Region (start, length, name, layer, flags),
119 _fade_in (0.0, 2.0, 1.0, false),
120 _fade_out (0.0, 2.0, 1.0, false),
121 _envelope (0.0, 2.0, 1.0, false)
123 /* basic AudioRegion constructor */
125 for (SourceList::const_iterator i=srcs.begin(); i != srcs.end(); ++i) {
126 sources.push_back (*i);
127 master_sources.push_back (*i);
128 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
130 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> ((*i));
132 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
136 _scale_amplitude = 1.0;
138 set_default_fades ();
139 set_default_envelope ();
141 listen_to_my_curves ();
142 listen_to_my_sources ();
146 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
147 : Region (other, offset, length, name, layer, flags),
148 _fade_in (other->_fade_in),
149 _fade_out (other->_fade_out),
150 _envelope (other->_envelope, (double) offset, (double) offset + length)
152 /* create a new AudioRegion, that is part of an existing one */
154 set<boost::shared_ptr<AudioSource> > unique_srcs;
156 for (SourceList::const_iterator i= other->sources.begin(); i != other->sources.end(); ++i) {
157 sources.push_back (*i);
158 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
160 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
162 result = unique_srcs.insert (*i);
165 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
167 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
172 for (SourceList::const_iterator i = other->master_sources.begin(); i != other->master_sources.end(); ++i) {
173 if (unique_srcs.find (*i) == unique_srcs.end()) {
174 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
176 master_sources.push_back (*i);
180 /* return to default fades if the existing ones are too long */
181 _fade_in_disabled = 0;
182 _fade_out_disabled = 0;
185 if (_flags & LeftOfSplit) {
186 if (_fade_in.back()->when >= _length) {
187 set_default_fade_in ();
189 _fade_in_disabled = other->_fade_in_disabled;
191 set_default_fade_out ();
192 _flags = Flag (_flags & ~Region::LeftOfSplit);
195 if (_flags & RightOfSplit) {
196 if (_fade_out.back()->when >= _length) {
197 set_default_fade_out ();
199 _fade_out_disabled = other->_fade_out_disabled;
201 set_default_fade_in ();
202 _flags = Flag (_flags & ~Region::RightOfSplit);
205 _scale_amplitude = other->_scale_amplitude;
207 listen_to_my_curves ();
208 listen_to_my_sources ();
211 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
213 _fade_in (other->_fade_in),
214 _fade_out (other->_fade_out),
215 _envelope (other->_envelope)
217 /* Pure copy constructor */
219 set<boost::shared_ptr<AudioSource> > unique_srcs;
221 for (SourceList::const_iterator i = other->sources.begin(); i != other->sources.end(); ++i) {
222 sources.push_back (*i);
223 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
224 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
226 result = unique_srcs.insert (*i);
229 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
231 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
236 for (SourceList::const_iterator i = other->master_sources.begin(); i != other->master_sources.end(); ++i) {
237 master_sources.push_back (*i);
238 if (unique_srcs.find (*i) == unique_srcs.end()) {
239 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
243 _scale_amplitude = other->_scale_amplitude;
244 _envelope = other->_envelope;
246 _fade_in_disabled = 0;
247 _fade_out_disabled = 0;
249 listen_to_my_curves ();
250 listen_to_my_sources ();
253 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, const XMLNode& node)
255 _fade_in (0.0, 2.0, 1.0, false),
256 _fade_out (0.0, 2.0, 1.0, false),
257 _envelope (0.0, 2.0, 1.0, false)
259 sources.push_back (src);
260 master_sources.push_back (src);
261 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
263 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
265 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
268 set_default_fades ();
270 if (set_state (node)) {
271 throw failed_constructor();
274 listen_to_my_curves ();
275 listen_to_my_sources ();
278 AudioRegion::AudioRegion (SourceList& srcs, const XMLNode& node)
280 _fade_in (0.0, 2.0, 1.0, false),
281 _fade_out (0.0, 2.0, 1.0, false),
282 _envelope (0.0, 2.0, 1.0, false)
284 set<boost::shared_ptr<AudioSource> > unique_srcs;
286 for (SourceList::iterator i=srcs.begin(); i != srcs.end(); ++i) {
287 sources.push_back (*i);
288 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
289 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
291 result = unique_srcs.insert (*i);
294 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
296 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
301 for (SourceList::iterator i = srcs.begin(); i != srcs.end(); ++i) {
302 master_sources.push_back (*i);
303 if (unique_srcs.find (*i) == unique_srcs.end()) {
304 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
308 set_default_fades ();
309 _scale_amplitude = 1.0;
311 if (set_state (node)) {
312 throw failed_constructor();
315 listen_to_my_curves ();
316 listen_to_my_sources ();
319 AudioRegion::~AudioRegion ()
321 boost::shared_ptr<Playlist> pl (playlist());
324 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
325 (*i)->remove_playlist (pl);
330 GoingAway (); /* EMIT SIGNAL */
334 AudioRegion::listen_to_my_sources ()
336 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
337 (*i)->AnalysisChanged.connect (mem_fun (*this, &AudioRegion::invalidate_transients));
342 AudioRegion::listen_to_my_curves ()
344 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
345 _fade_in.StateChanged.connect (mem_fun (*this, &AudioRegion::fade_in_changed));
346 _fade_out.StateChanged.connect (mem_fun (*this, &AudioRegion::fade_out_changed));
350 AudioRegion::verify_length (nframes_t& len)
352 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
354 if (afs && afs->destructive()) {
358 nframes_t maxlen = 0;
360 for (uint32_t n=0; n < sources.size(); ++n) {
361 maxlen = max (maxlen, sources[n]->length() - _start);
364 len = min (len, maxlen);
370 AudioRegion::verify_start_and_length (nframes_t new_start, nframes_t& new_length)
372 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
374 if (afs && afs->destructive()) {
378 nframes_t maxlen = 0;
380 for (uint32_t n=0; n < sources.size(); ++n) {
381 maxlen = max (maxlen, sources[n]->length() - new_start);
384 new_length = min (new_length, maxlen);
389 AudioRegion::verify_start (nframes_t pos)
391 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
393 if (afs && afs->destructive()) {
397 for (uint32_t n=0; n < sources.size(); ++n) {
398 if (pos > sources[n]->length() - _length) {
406 AudioRegion::verify_start_mutable (nframes_t& new_start)
408 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
410 if (afs && afs->destructive()) {
414 for (uint32_t n=0; n < sources.size(); ++n) {
415 if (new_start > sources[n]->length() - _length) {
416 new_start = sources[n]->length() - _length;
422 AudioRegion::set_envelope_active (bool yn)
424 if (envelope_active() != yn) {
427 snprintf (buf, sizeof (buf), "envelope active");
428 _flags = Flag (_flags|EnvelopeActive);
430 snprintf (buf, sizeof (buf), "envelope off");
431 _flags = Flag (_flags & ~EnvelopeActive);
433 send_change (EnvelopeActiveChanged);
438 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
440 if (chan_n >= sources.size()) {
444 if (sources[chan_n]->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
447 if (_scale_amplitude != 1.0) {
448 for (nframes_t n = 0; n < npeaks; ++n) {
449 buf[n].max *= _scale_amplitude;
450 buf[n].min *= _scale_amplitude;
458 AudioRegion::read (Sample* buf, nframes64_t position, nframes64_t cnt, int channel) const
460 /* raw read, no fades, no gain, nada */
461 return _read_at (sources, buf, 0, 0, _position + position, cnt, channel, 0, 0, true);
465 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
467 uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const
469 /* regular diskstream/butler read complete with fades etc */
470 return _read_at (sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, read_frames, skip_frames, false);
474 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
475 nframes_t cnt, uint32_t chan_n) const
477 return _read_at (master_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0);
481 AudioRegion::_read_at (const SourceList& srcs, Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
482 nframes_t position, nframes_t cnt,
484 nframes_t read_frames,
485 nframes_t skip_frames,
488 nframes_t internal_offset;
489 nframes_t buf_offset;
492 if (muted() && !raw) {
493 return 0; /* read nothing */
496 /* precondition: caller has verified that we cover the desired section */
498 if (position < _position) {
500 buf_offset = _position - position;
503 internal_offset = position - _position;
507 if (internal_offset >= _length) {
508 return 0; /* read nothing */
511 if ((to_read = min (cnt, _length - internal_offset)) == 0) {
512 return 0; /* read nothing */
515 if (opaque() || raw) {
516 /* overwrite whatever is there */
517 mixdown_buffer = buf + buf_offset;
519 mixdown_buffer += buf_offset;
523 _read_data_count = 0;
526 if (chan_n < n_channels()) {
528 if (srcs[chan_n]->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
530 return 0; /* "read nothing" */
534 _read_data_count += srcs[chan_n]->read_data_count();
539 /* track is N-channel, this region has less channels; silence the ones
543 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
545 /* no fades required */
556 if (_flags & FadeIn) {
558 nframes_t fade_in_length = (nframes_t) _fade_in.back()->when;
560 /* see if this read is within the fade in */
562 if (internal_offset < fade_in_length) {
566 limit = min (to_read, fade_in_length - internal_offset);
568 _fade_in.get_vector (internal_offset, internal_offset+limit, gain_buffer, limit);
570 for (nframes_t n = 0; n < limit; ++n) {
571 mixdown_buffer[n] *= gain_buffer[n];
578 if (_flags & FadeOut) {
580 /* see if some part of this read is within the fade out */
582 /* ................. >| REGION
588 _length - fade_out_length
591 ^internal_offset + to_read
593 we need the intersection of [internal_offset,internal_offset+to_read] with
594 [_length - fade_out_length, _length]
599 nframes_t fade_out_length = (nframes_t) _fade_out.back()->when;
600 nframes_t fade_interval_start = max(internal_offset, _length-fade_out_length);
601 nframes_t fade_interval_end = min(internal_offset + to_read, _length);
603 if (fade_interval_end > fade_interval_start) {
604 /* (part of the) the fade out is in this buffer */
606 nframes_t limit = fade_interval_end - fade_interval_start;
607 nframes_t curve_offset = fade_interval_start - (_length-fade_out_length);
608 nframes_t fade_offset = fade_interval_start - internal_offset;
610 _fade_out.get_vector (curve_offset,curve_offset+limit, gain_buffer, limit);
612 for (nframes_t n = 0, m = fade_offset; n < limit; ++n, ++m) {
613 mixdown_buffer[m] *= gain_buffer[n];
619 /* Regular gain curves */
621 if (envelope_active()) {
622 _envelope.get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
624 if (_scale_amplitude != 1.0f) {
625 for (nframes_t n = 0; n < to_read; ++n) {
626 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
629 for (nframes_t n = 0; n < to_read; ++n) {
630 mixdown_buffer[n] *= gain_buffer[n];
633 } else if (_scale_amplitude != 1.0f) {
634 Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
641 /* gack. the things we do for users.
646 for (nframes_t n = 0; n < to_read; ++n) {
647 buf[n] += mixdown_buffer[n];
656 AudioRegion::state (bool full)
658 XMLNode& node (Region::state (full));
662 LocaleGuard lg (X_("POSIX"));
664 node.add_property ("flags", enum_2_string (_flags));
666 snprintf (buf, sizeof(buf), "%.12g", _scale_amplitude);
667 node.add_property ("scale-gain", buf);
669 for (uint32_t n=0; n < sources.size(); ++n) {
670 snprintf (buf2, sizeof(buf2), "source-%d", n);
671 sources[n]->id().print (buf, sizeof (buf));
672 node.add_property (buf2, buf);
675 snprintf (buf, sizeof (buf), "%u", (uint32_t) sources.size());
676 node.add_property ("channels", buf);
680 child = node.add_child (X_("FadeIn"));
682 if ((_flags & DefaultFadeIn)) {
683 child->add_property (X_("default"), X_("yes"));
685 child->add_child_nocopy (_fade_in.get_state ());
688 child->add_property (X_("active"), _fade_in_disabled ? X_("no") : X_("yes"));
690 child = node.add_child (X_("FadeOut"));
692 if ((_flags & DefaultFadeOut)) {
693 child->add_property (X_("default"), X_("yes"));
695 child->add_child_nocopy (_fade_out.get_state ());
698 child->add_property (X_("active"), _fade_out_disabled ? X_("no") : X_("yes"));
701 child = node.add_child ("Envelope");
704 bool default_env = false;
706 // If there are only two points, the points are in the start of the region and the end of the region
707 // so, if they are both at 1.0f, that means the default region.
709 if (_envelope.size() == 2 &&
710 _envelope.front()->value == 1.0f &&
711 _envelope.back()->value==1.0f) {
712 if (_envelope.front()->when == 0 && _envelope.back()->when == _length) {
718 child->add_property ("default", "yes");
720 child->add_child_nocopy (_envelope.get_state ());
724 child->add_property ("default", "yes");
727 for (uint32_t n=0; n < master_sources.size(); ++n) {
728 snprintf (buf2, sizeof(buf2), "master-source-%d", n);
729 master_sources[n]->id().print (buf, sizeof (buf));
730 node.add_property (buf2, buf);
733 if (full && _extra_xml) {
734 node.add_child_copy (*_extra_xml);
741 AudioRegion::set_live_state (const XMLNode& node, Change& what_changed, bool send)
743 const XMLNodeList& nlist = node.children();
744 const XMLProperty *prop;
745 LocaleGuard lg (X_("POSIX"));
747 Region::set_live_state (node, what_changed, false);
749 uint32_t old_flags = _flags;
751 if ((prop = node.property ("flags")) != 0) {
752 _flags = Flag (string_2_enum (prop->value(), _flags));
754 //_flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16));
756 _flags = Flag (_flags & ~Region::LeftOfSplit);
757 _flags = Flag (_flags & ~Region::RightOfSplit);
760 if ((old_flags ^ _flags) & Muted) {
761 what_changed = Change (what_changed|MuteChanged);
763 if ((old_flags ^ _flags) & Opaque) {
764 what_changed = Change (what_changed|OpacityChanged);
766 if ((old_flags ^ _flags) & Locked) {
767 what_changed = Change (what_changed|LockChanged);
770 if ((prop = node.property ("scale-gain")) != 0) {
771 _scale_amplitude = atof (prop->value().c_str());
772 what_changed = Change (what_changed|ScaleAmplitudeChanged);
774 _scale_amplitude = 1.0;
777 /* Now find envelope description and other misc child items */
779 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
786 if (child->name() == "Envelope") {
790 if ((prop = child->property ("default")) != 0 || _envelope.set_state (*child)) {
791 set_default_envelope ();
794 _envelope.set_max_xval (_length);
795 _envelope.truncate_end (_length);
797 } else if (child->name() == "FadeIn") {
801 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
802 set_default_fade_in ();
804 XMLNode* grandchild = child->child ("AutomationList");
806 _fade_in.set_state (*grandchild);
810 if ((prop = child->property ("active")) != 0) {
811 if (prop->value() == "yes") {
812 set_fade_in_active (true);
814 set_fade_in_active (true);
818 } else if (child->name() == "FadeOut") {
822 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
823 set_default_fade_out ();
825 XMLNode* grandchild = child->child ("AutomationList");
827 _fade_out.set_state (*grandchild);
831 if ((prop = child->property ("active")) != 0) {
832 if (prop->value() == "yes") {
833 set_fade_out_active (true);
835 set_fade_out_active (false);
843 send_change (what_changed);
850 AudioRegion::set_state (const XMLNode& node)
852 /* Region::set_state() calls the virtual set_live_state(),
853 which will get us back to AudioRegion::set_live_state()
854 to handle the relevant stuff.
857 return Region::set_state (node);
861 AudioRegion::set_fade_in_shape (FadeShape shape)
863 set_fade_in (shape, (nframes_t) _fade_in.back()->when);
867 AudioRegion::set_fade_out_shape (FadeShape shape)
869 set_fade_out (shape, (nframes_t) _fade_out.back()->when);
873 AudioRegion::set_fade_in (FadeShape shape, nframes_t len)
880 _fade_in.fast_simple_add (0.0, 0.0);
881 _fade_in.fast_simple_add (len, 1.0);
885 _fade_in.fast_simple_add (0, 0);
886 _fade_in.fast_simple_add (len * 0.389401, 0.0333333);
887 _fade_in.fast_simple_add (len * 0.629032, 0.0861111);
888 _fade_in.fast_simple_add (len * 0.829493, 0.233333);
889 _fade_in.fast_simple_add (len * 0.9447, 0.483333);
890 _fade_in.fast_simple_add (len * 0.976959, 0.697222);
891 _fade_in.fast_simple_add (len, 1);
895 _fade_in.fast_simple_add (0, 0);
896 _fade_in.fast_simple_add (len * 0.0207373, 0.197222);
897 _fade_in.fast_simple_add (len * 0.0645161, 0.525);
898 _fade_in.fast_simple_add (len * 0.152074, 0.802778);
899 _fade_in.fast_simple_add (len * 0.276498, 0.919444);
900 _fade_in.fast_simple_add (len * 0.481567, 0.980556);
901 _fade_in.fast_simple_add (len * 0.767281, 1);
902 _fade_in.fast_simple_add (len, 1);
906 _fade_in.fast_simple_add (0, 0);
907 _fade_in.fast_simple_add (len * 0.0737327, 0.308333);
908 _fade_in.fast_simple_add (len * 0.246544, 0.658333);
909 _fade_in.fast_simple_add (len * 0.470046, 0.886111);
910 _fade_in.fast_simple_add (len * 0.652074, 0.972222);
911 _fade_in.fast_simple_add (len * 0.771889, 0.988889);
912 _fade_in.fast_simple_add (len, 1);
916 _fade_in.fast_simple_add (0, 0);
917 _fade_in.fast_simple_add (len * 0.304147, 0.0694444);
918 _fade_in.fast_simple_add (len * 0.529954, 0.152778);
919 _fade_in.fast_simple_add (len * 0.725806, 0.333333);
920 _fade_in.fast_simple_add (len * 0.847926, 0.558333);
921 _fade_in.fast_simple_add (len * 0.919355, 0.730556);
922 _fade_in.fast_simple_add (len, 1);
927 _fade_in_shape = shape;
929 send_change (FadeInChanged);
933 AudioRegion::set_fade_out (FadeShape shape, nframes_t len)
940 _fade_out.fast_simple_add (len * 0, 1);
941 _fade_out.fast_simple_add (len * 0.023041, 0.697222);
942 _fade_out.fast_simple_add (len * 0.0553, 0.483333);
943 _fade_out.fast_simple_add (len * 0.170507, 0.233333);
944 _fade_out.fast_simple_add (len * 0.370968, 0.0861111);
945 _fade_out.fast_simple_add (len * 0.610599, 0.0333333);
946 _fade_out.fast_simple_add (len * 1, 0);
950 _fade_out.fast_simple_add (len * 0, 1);
951 _fade_out.fast_simple_add (len * 0.228111, 0.988889);
952 _fade_out.fast_simple_add (len * 0.347926, 0.972222);
953 _fade_out.fast_simple_add (len * 0.529954, 0.886111);
954 _fade_out.fast_simple_add (len * 0.753456, 0.658333);
955 _fade_out.fast_simple_add (len * 0.9262673, 0.308333);
956 _fade_out.fast_simple_add (len * 1, 0);
960 _fade_out.fast_simple_add (len * 0, 1);
961 _fade_out.fast_simple_add (len * 0.305556, 1);
962 _fade_out.fast_simple_add (len * 0.548611, 0.991736);
963 _fade_out.fast_simple_add (len * 0.759259, 0.931129);
964 _fade_out.fast_simple_add (len * 0.918981, 0.68595);
965 _fade_out.fast_simple_add (len * 0.976852, 0.22865);
966 _fade_out.fast_simple_add (len * 1, 0);
970 _fade_out.fast_simple_add (len * 0, 1);
971 _fade_out.fast_simple_add (len * 0.080645, 0.730556);
972 _fade_out.fast_simple_add (len * 0.277778, 0.289256);
973 _fade_out.fast_simple_add (len * 0.470046, 0.152778);
974 _fade_out.fast_simple_add (len * 0.695853, 0.0694444);
975 _fade_out.fast_simple_add (len * 1, 0);
979 _fade_out.fast_simple_add (len * 0, 1);
980 _fade_out.fast_simple_add (len * 1, 0);
985 _fade_out_shape = shape;
987 send_change (FadeOutChanged);
991 AudioRegion::set_fade_in_length (nframes_t len)
997 bool changed = _fade_in.extend_to (len);
1000 _flags = Flag (_flags & ~DefaultFadeIn);
1001 send_change (FadeInChanged);
1006 AudioRegion::set_fade_out_length (nframes_t len)
1008 if (len > _length) {
1012 bool changed = _fade_out.extend_to (len);
1015 _flags = Flag (_flags & ~DefaultFadeOut);
1016 send_change (FadeOutChanged);
1021 AudioRegion::set_fade_in_active (bool yn)
1023 if (yn == (_flags & FadeIn)) {
1027 _flags = Flag (_flags|FadeIn);
1029 _flags = Flag (_flags & ~FadeIn);
1032 send_change (FadeInActiveChanged);
1036 AudioRegion::set_fade_out_active (bool yn)
1038 if (yn == (_flags & FadeOut)) {
1042 _flags = Flag (_flags | FadeOut);
1044 _flags = Flag (_flags & ~FadeOut);
1047 send_change (FadeOutActiveChanged);
1051 AudioRegion::fade_in_is_default () const
1053 return _fade_in_shape == Linear && _fade_in.back()->when == 64;
1057 AudioRegion::fade_out_is_default () const
1059 return _fade_out_shape == Linear && _fade_out.back()->when == 64;
1063 AudioRegion::set_default_fade_in ()
1065 set_fade_in (Linear, 64);
1069 AudioRegion::set_default_fade_out ()
1071 set_fade_out (Linear, 64);
1075 AudioRegion::set_default_fades ()
1077 _fade_in_disabled = 0;
1078 _fade_out_disabled = 0;
1079 set_default_fade_in ();
1080 set_default_fade_out ();
1084 AudioRegion::set_default_envelope ()
1086 _envelope.freeze ();
1088 _envelope.fast_simple_add (0, 1.0f);
1089 _envelope.fast_simple_add (_length, 1.0f);
1094 AudioRegion::recompute_at_end ()
1096 /* our length has changed. recompute a new final point by interpolating
1097 based on the the existing curve.
1100 _envelope.freeze ();
1101 _envelope.truncate_end (_length);
1102 _envelope.set_max_xval (_length);
1105 if (_fade_in.back()->when > _length) {
1106 _fade_in.extend_to (_length);
1107 send_change (FadeInChanged);
1110 if (_fade_out.back()->when > _length) {
1111 _fade_out.extend_to (_length);
1112 send_change (FadeOutChanged);
1117 AudioRegion::recompute_at_start ()
1119 /* as above, but the shift was from the front */
1121 _envelope.truncate_start (_length);
1123 if (_fade_in.back()->when > _length) {
1124 _fade_in.extend_to (_length);
1125 send_change (FadeInChanged);
1128 if (_fade_out.back()->when > _length) {
1129 _fade_out.extend_to (_length);
1130 send_change (FadeOutChanged);
1135 AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<AudioRegion> >& v) const
1141 if (sources.size() < 2) {
1147 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1150 srcs.push_back (*i);
1154 if (sources.size() == 2) {
1162 new_name += ('0' + n + 1);
1165 /* create a copy with just one source. prevent if from being thought of as "whole file" even if
1166 it covers the entire source file(s).
1169 Flag f = Flag (_flags & ~WholeFile);
1171 boost::shared_ptr<Region> r = RegionFactory::create (srcs, _start, _length, new_name, _layer, f);
1172 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r);
1183 AudioRegion::source_deleted ()
1190 AudioRegion::master_source_names ()
1192 SourceList::iterator i;
1194 vector<string> names;
1195 for (i = master_sources.begin(); i != master_sources.end(); ++i) {
1196 names.push_back((*i)->name());
1203 AudioRegion::set_master_sources (SourceList& srcs)
1205 master_sources = srcs;
1209 AudioRegion::source_equivalent (boost::shared_ptr<const Region> o) const
1211 boost::shared_ptr<const AudioRegion> other = boost::dynamic_pointer_cast<const AudioRegion>(o);
1216 SourceList::const_iterator i;
1217 SourceList::const_iterator io;
1219 for (i = sources.begin(), io = other->sources.begin(); i != sources.end() && io != other->sources.end(); ++i, ++io) {
1220 if ((*i)->id() != (*io)->id()) {
1225 for (i = master_sources.begin(), io = other->master_sources.begin(); i != master_sources.end() && io != other->master_sources.end(); ++i, ++io) {
1226 if ((*i)->id() != (*io)->id()) {
1235 AudioRegion::apply (AudioFilter& filter)
1237 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (shared_from_this());
1238 return filter.run (ar);
1242 AudioRegion::exportme (Session& session, AudioExportSpecification& spec)
1244 const nframes_t blocksize = 4096;
1248 spec.channels = sources.size();
1250 if (spec.prepare (blocksize, session.frame_rate())) {
1255 spec.total_frames = _length;
1257 while (spec.pos < _length && !spec.stop) {
1260 /* step 1: interleave */
1262 to_read = min (_length - spec.pos, blocksize);
1264 if (spec.channels == 1) {
1266 if (sources.front()->read (spec.dataF, _start + spec.pos, to_read) != to_read) {
1272 Sample buf[blocksize];
1274 for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1276 if (sources[chan]->read (buf, _start + spec.pos, to_read) != to_read) {
1280 for (nframes_t x = 0; x < to_read; ++x) {
1281 spec.dataF[chan+(x*spec.channels)] = buf[x];
1286 if (spec.process (to_read)) {
1290 spec.pos += to_read;
1291 spec.progress = (double) spec.pos /_length;
1298 spec.running = false;
1299 spec.status = status;
1305 boost::shared_ptr<Region>
1306 AudioRegion::get_parent() const
1308 boost::shared_ptr<Playlist> pl (playlist());
1311 boost::shared_ptr<AudioRegion> ar;
1312 boost::shared_ptr<AudioRegion const> grrr2 = boost::dynamic_pointer_cast<AudioRegion const> (shared_from_this());
1314 if (grrr2 && (ar = pl->session().find_whole_file_parent (grrr2))) {
1315 return boost::static_pointer_cast<Region> (ar);
1319 return boost::shared_ptr<Region>();
1323 AudioRegion::set_scale_amplitude (gain_t g)
1325 boost::shared_ptr<Playlist> pl (playlist());
1327 _scale_amplitude = g;
1329 /* tell the diskstream we're in */
1335 /* tell everybody else */
1337 send_change (ScaleAmplitudeChanged);
1341 AudioRegion::normalize_to (float target_dB)
1343 const nframes_t blocksize = 64 * 1024;
1344 Sample buf[blocksize];
1349 gain_t target = dB_to_coefficient (target_dB);
1351 if (target == 1.0f) {
1352 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1353 that we may have clipped.
1355 target -= FLT_EPSILON;
1359 fend = _start + _length;
1361 /* first pass: find max amplitude */
1363 while (fpos < fend) {
1367 to_read = min (fend - fpos, blocksize);
1369 for (n = 0; n < n_channels(); ++n) {
1373 if (source (n)->read (buf, fpos, to_read) != to_read) {
1377 maxamp = Session::compute_peak (buf, to_read, maxamp);
1383 if (maxamp == 0.0f) {
1384 /* don't even try */
1388 if (maxamp == target) {
1389 /* we can't do anything useful */
1393 /* compute scale factor */
1395 _scale_amplitude = target/maxamp;
1397 /* tell the diskstream we're in */
1399 boost::shared_ptr<Playlist> pl (playlist());
1405 /* tell everybody else */
1407 send_change (ScaleAmplitudeChanged);
1411 AudioRegion::fade_in_changed ()
1413 send_change (FadeInChanged);
1417 AudioRegion::fade_out_changed ()
1419 send_change (FadeOutChanged);
1423 AudioRegion::envelope_changed ()
1425 send_change (EnvelopeChanged);
1429 AudioRegion::suspend_fade_in ()
1431 if (++_fade_in_disabled == 1) {
1432 if (fade_in_is_default()) {
1433 set_fade_in_active (false);
1439 AudioRegion::resume_fade_in ()
1441 if (--_fade_in_disabled == 0 && _fade_in_disabled) {
1442 set_fade_in_active (true);
1447 AudioRegion::suspend_fade_out ()
1449 if (++_fade_out_disabled == 1) {
1450 if (fade_out_is_default()) {
1451 set_fade_out_active (false);
1457 AudioRegion::resume_fade_out ()
1459 if (--_fade_out_disabled == 0 &&_fade_out_disabled) {
1460 set_fade_out_active (true);
1465 AudioRegion::speed_mismatch (float sr) const
1467 if (sources.empty()) {
1468 /* impossible, but ... */
1472 float fsr = sources.front()->sample_rate();
1478 AudioRegion::source_offset_changed ()
1480 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(sources.front());
1482 if (afs && afs->destructive()) {
1483 // set_start (source()->natural_position(), this);
1484 set_position (source()->natural_position(), this);
1489 AudioRegion::set_playlist (boost::weak_ptr<Playlist> wpl)
1491 boost::shared_ptr<Playlist> old_playlist = (_playlist.lock());
1493 boost::shared_ptr<Playlist> pl (wpl.lock());
1495 if (old_playlist == pl) {
1499 Region::set_playlist (wpl);
1503 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1504 (*i)->remove_playlist (_playlist);
1505 (*i)->add_playlist (pl);
1508 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1509 (*i)->add_playlist (pl);
1514 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1515 (*i)->remove_playlist (old_playlist);
1522 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1524 boost::shared_ptr<Playlist> pl = playlist();
1530 if (valid_transients && !force_new) {
1531 results = _transients;
1535 SourceList::iterator s;
1537 for (s = sources.begin() ; s != sources.end(); ++s) {
1538 if (!(*s)->has_been_analysed()) {
1539 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1544 if (s == sources.end()) {
1545 /* all sources are analyzed, merge data from each one */
1547 for (s = sources.begin() ; s != sources.end(); ++s) {
1549 /* find the set of transients within the bounds of this region */
1551 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1552 (*s)->transients.end(),
1555 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1556 (*s)->transients.end(),
1561 results.insert (results.end(), low, high);
1564 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1566 /* translate all transients to current position */
1568 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1573 _transients = results;
1574 valid_transients = true;
1579 cerr << "startup analysis of " << _name << endl;
1581 TransientDetector t (pl->session().frame_rate());
1582 bool existing_results = !results.empty();
1584 _transients.clear ();
1585 valid_transients = false;
1587 for (uint32_t i = 0; i < n_channels(); ++i) {
1589 AnalysisFeatureList these_results;
1593 cerr << "working on channel " << i << endl;
1595 if (t.run ("", this, i, these_results)) {
1601 /* translate all transients to give absolute position */
1603 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1609 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1612 if (!results.empty()) {
1613 if (existing_results) {
1615 /* merge our transients into the existing ones, then clean up
1619 results.insert (results.end(), _transients.begin(), _transients.end());
1620 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1623 /* make sure ours are clean too */
1625 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1629 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1630 results = _transients;
1633 valid_transients = true;
1640 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)
1642 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (nframes_t) npeaks, (nframes_t) start, (nframes_t) cnt, n_chan,samples_per_unit);
1645 uint32_t region_length_from_c (void *arg)
1648 return ((AudioRegion *) arg)->length();
1651 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1653 return ( (AudioRegion *) arg)->source()->available_peaks (zoom_factor) ;