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.
26 #include <sigc++/bind.h>
27 #include <sigc++/class_slot.h>
29 #include <glibmm/thread.h>
31 #include <pbd/basename.h>
32 #include <pbd/xml++.h>
33 #include <pbd/stacktrace.h>
34 #include <pbd/enumwriter.h>
36 #include <ardour/audioregion.h>
37 #include <ardour/session.h>
38 #include <ardour/gain.h>
39 #include <ardour/dB.h>
40 #include <ardour/playlist.h>
41 #include <ardour/audiofilter.h>
42 #include <ardour/audiofilesource.h>
43 #include <ardour/region_factory.h>
49 using namespace ARDOUR;
51 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
53 Change AudioRegion::FadeInChanged = ARDOUR::new_change();
54 Change AudioRegion::FadeOutChanged = ARDOUR::new_change();
55 Change AudioRegion::FadeInActiveChanged = ARDOUR::new_change();
56 Change AudioRegion::FadeOutActiveChanged = ARDOUR::new_change();
57 Change AudioRegion::EnvelopeActiveChanged = ARDOUR::new_change();
58 Change AudioRegion::ScaleAmplitudeChanged = ARDOUR::new_change();
59 Change AudioRegion::EnvelopeChanged = ARDOUR::new_change();
61 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length)
62 : Region (start, length, PBD::basename_nosuffix(src->name()), 0, Region::Flag(Region::DefaultFlags|Region::External)),
63 _fade_in (0.0, 2.0, 1.0, false),
64 _fade_out (0.0, 2.0, 1.0, false),
65 _envelope (0.0, 2.0, 1.0, false)
67 /* basic AudioRegion constructor */
69 sources.push_back (src);
70 master_sources.push_back (src);
71 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
73 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
75 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
78 _scale_amplitude = 1.0;
81 set_default_envelope ();
83 listen_to_my_curves ();
86 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
87 : Region (start, length, name, layer, flags),
88 _fade_in (0.0, 2.0, 1.0, false),
89 _fade_out (0.0, 2.0, 1.0, false),
90 _envelope (0.0, 2.0, 1.0, false)
92 /* basic AudioRegion constructor */
94 sources.push_back (src);
95 master_sources.push_back (src);
96 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
98 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
100 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
103 _scale_amplitude = 1.0;
105 set_default_fades ();
106 set_default_envelope ();
108 listen_to_my_curves ();
111 AudioRegion::AudioRegion (SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags)
112 : Region (start, length, name, layer, flags),
113 _fade_in (0.0, 2.0, 1.0, false),
114 _fade_out (0.0, 2.0, 1.0, false),
115 _envelope (0.0, 2.0, 1.0, false)
117 /* basic AudioRegion constructor */
119 for (SourceList::iterator i=srcs.begin(); i != srcs.end(); ++i) {
120 sources.push_back (*i);
121 master_sources.push_back (*i);
122 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
124 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> ((*i));
126 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
130 _scale_amplitude = 1.0;
132 set_default_fades ();
133 set_default_envelope ();
135 listen_to_my_curves ();
139 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
140 : Region (other, offset, length, name, layer, flags),
141 _fade_in (other->_fade_in),
142 _fade_out (other->_fade_out),
143 _envelope (other->_envelope, (double) offset, (double) offset + length)
145 /* create a new AudioRegion, that is part of an existing one */
147 set<boost::shared_ptr<AudioSource> > unique_srcs;
149 for (SourceList::const_iterator i= other->sources.begin(); i != other->sources.end(); ++i) {
150 sources.push_back (*i);
151 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
153 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
155 result = unique_srcs.insert (*i);
158 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
160 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
165 for (SourceList::const_iterator i = other->master_sources.begin(); i != other->master_sources.end(); ++i) {
166 if (unique_srcs.find (*i) == unique_srcs.end()) {
167 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
169 master_sources.push_back (*i);
172 /* return to default fades if the existing ones are too long */
173 _fade_in_disabled = 0;
174 _fade_out_disabled = 0;
177 if (_flags & LeftOfSplit) {
178 if (_fade_in.back()->when >= _length) {
179 set_default_fade_in ();
181 _fade_in_disabled = other->_fade_in_disabled;
183 set_default_fade_out ();
184 _flags = Flag (_flags & ~Region::LeftOfSplit);
187 if (_flags & RightOfSplit) {
188 if (_fade_out.back()->when >= _length) {
189 set_default_fade_out ();
191 _fade_out_disabled = other->_fade_out_disabled;
193 set_default_fade_in ();
194 _flags = Flag (_flags & ~Region::RightOfSplit);
197 _scale_amplitude = other->_scale_amplitude;
199 listen_to_my_curves ();
202 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
204 _fade_in (other->_fade_in),
205 _fade_out (other->_fade_out),
206 _envelope (other->_envelope)
208 /* Pure copy constructor */
210 set<boost::shared_ptr<AudioSource> > unique_srcs;
212 for (SourceList::const_iterator i = other->sources.begin(); i != other->sources.end(); ++i) {
213 sources.push_back (*i);
214 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
215 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
217 result = unique_srcs.insert (*i);
220 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
222 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
227 for (SourceList::const_iterator i = other->master_sources.begin(); i != other->master_sources.end(); ++i) {
228 master_sources.push_back (*i);
229 if (unique_srcs.find (*i) == unique_srcs.end()) {
230 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
234 _scale_amplitude = other->_scale_amplitude;
235 _envelope = other->_envelope;
237 _fade_in_disabled = 0;
238 _fade_out_disabled = 0;
240 listen_to_my_curves ();
243 AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, const XMLNode& node)
245 _fade_in (0.0, 2.0, 1.0, false),
246 _fade_out (0.0, 2.0, 1.0, false),
247 _envelope (0.0, 2.0, 1.0, false)
249 sources.push_back (src);
250 master_sources.push_back (src);
251 src->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
253 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src);
255 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
258 set_default_fades ();
260 if (set_state (node)) {
261 throw failed_constructor();
264 listen_to_my_curves ();
267 AudioRegion::AudioRegion (SourceList& srcs, const XMLNode& node)
269 _fade_in (0.0, 2.0, 1.0, false),
270 _fade_out (0.0, 2.0, 1.0, false),
271 _envelope (0.0, 2.0, 1.0, false)
273 set<boost::shared_ptr<AudioSource> > unique_srcs;
275 for (SourceList::iterator i=srcs.begin(); i != srcs.end(); ++i) {
276 sources.push_back (*i);
277 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
278 pair<set<boost::shared_ptr<AudioSource> >::iterator,bool> result;
280 result = unique_srcs.insert (*i);
283 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
285 afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed));
290 for (SourceList::iterator i = srcs.begin(); i != srcs.end(); ++i) {
291 master_sources.push_back (*i);
292 if (unique_srcs.find (*i) == unique_srcs.end()) {
293 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
297 set_default_fades ();
298 _scale_amplitude = 1.0;
300 if (set_state (node)) {
301 throw failed_constructor();
304 listen_to_my_curves ();
307 AudioRegion::~AudioRegion ()
309 boost::shared_ptr<Playlist> pl (playlist());
312 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
313 (*i)->remove_playlist (pl);
318 GoingAway (); /* EMIT SIGNAL */
322 AudioRegion::listen_to_my_curves ()
324 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
325 _fade_in.StateChanged.connect (mem_fun (*this, &AudioRegion::fade_in_changed));
326 _fade_out.StateChanged.connect (mem_fun (*this, &AudioRegion::fade_out_changed));
330 AudioRegion::verify_length (nframes_t len)
332 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
334 if (afs && afs->destructive()) {
338 for (uint32_t n=0; n < sources.size(); ++n) {
339 if (_start > sources[n]->length() - len) {
347 AudioRegion::verify_start_and_length (nframes_t new_start, nframes_t new_length)
349 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
351 if (afs && afs->destructive()) {
355 for (uint32_t n=0; n < sources.size(); ++n) {
356 if (new_length > sources[n]->length() - new_start) {
363 AudioRegion::verify_start (nframes_t pos)
365 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
367 if (afs && afs->destructive()) {
371 for (uint32_t n=0; n < sources.size(); ++n) {
372 if (pos > sources[n]->length() - _length) {
380 AudioRegion::verify_start_mutable (nframes_t& new_start)
382 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(source());
384 if (afs && afs->destructive()) {
388 for (uint32_t n=0; n < sources.size(); ++n) {
389 if (new_start > sources[n]->length() - _length) {
390 new_start = sources[n]->length() - _length;
396 AudioRegion::set_envelope_active (bool yn)
398 if (envelope_active() != yn) {
401 snprintf (buf, sizeof (buf), "envelope active");
402 _flags = Flag (_flags|EnvelopeActive);
404 snprintf (buf, sizeof (buf), "envelope off");
405 _flags = Flag (_flags & ~EnvelopeActive);
407 send_change (EnvelopeActiveChanged);
412 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
414 if (chan_n >= sources.size()) {
418 if (sources[chan_n]->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
421 if (_scale_amplitude != 1.0) {
422 for (nframes_t n = 0; n < npeaks; ++n) {
423 buf[n].max *= _scale_amplitude;
424 buf[n].min *= _scale_amplitude;
432 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
434 uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const
436 return _read_at (sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, read_frames, skip_frames);
440 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position,
441 nframes_t cnt, uint32_t chan_n) const
443 return _read_at (master_sources, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0);
447 AudioRegion::_read_at (const SourceList& srcs, Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
448 nframes_t position, nframes_t cnt,
449 uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const
451 nframes_t internal_offset;
452 nframes_t buf_offset;
456 return 0; /* read nothing */
459 /* precondition: caller has verified that we cover the desired section */
461 if (position < _position) {
463 buf_offset = _position - position;
466 internal_offset = position - _position;
470 if (internal_offset >= _length) {
471 return 0; /* read nothing */
474 if ((to_read = min (cnt, _length - internal_offset)) == 0) {
475 return 0; /* read nothing */
479 /* overwrite whatever is there */
480 mixdown_buffer = buf + buf_offset;
482 mixdown_buffer += buf_offset;
485 _read_data_count = 0;
487 if (chan_n < n_channels()) {
489 if (srcs[chan_n]->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
491 return 0; /* "read nothing" */
494 _read_data_count += srcs[chan_n]->read_data_count();
498 /* track is N-channel, this region has less channels; silence the ones
502 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
504 /* no fades required */
511 if (_flags & FadeIn) {
513 nframes_t fade_in_length = (nframes_t) _fade_in.back()->when;
515 /* see if this read is within the fade in */
517 if (internal_offset < fade_in_length) {
521 limit = min (to_read, fade_in_length - internal_offset);
523 _fade_in.get_vector (internal_offset, internal_offset+limit, gain_buffer, limit);
525 for (nframes_t n = 0; n < limit; ++n) {
526 mixdown_buffer[n] *= gain_buffer[n];
533 if (_flags & FadeOut) {
535 /* see if some part of this read is within the fade out */
537 /* ................. >| REGION
543 _length - fade_out_length
546 ^internal_offset + to_read
548 we need the intersection of [internal_offset,internal_offset+to_read] with
549 [_length - fade_out_length, _length]
554 nframes_t fade_out_length = (nframes_t) _fade_out.back()->when;
555 nframes_t fade_interval_start = max(internal_offset, _length-fade_out_length);
556 nframes_t fade_interval_end = min(internal_offset + to_read, _length);
558 if (fade_interval_end > fade_interval_start) {
559 /* (part of the) the fade out is in this buffer */
561 nframes_t limit = fade_interval_end - fade_interval_start;
562 nframes_t curve_offset = fade_interval_start - (_length-fade_out_length);
563 nframes_t fade_offset = fade_interval_start - internal_offset;
565 _fade_out.get_vector (curve_offset,curve_offset+limit, gain_buffer, limit);
567 for (nframes_t n = 0, m = fade_offset; n < limit; ++n, ++m) {
568 mixdown_buffer[m] *= gain_buffer[n];
574 /* Regular gain curves */
576 if (envelope_active()) {
577 _envelope.get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
579 if (_scale_amplitude != 1.0f) {
580 for (nframes_t n = 0; n < to_read; ++n) {
581 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
584 for (nframes_t n = 0; n < to_read; ++n) {
585 mixdown_buffer[n] *= gain_buffer[n];
588 } else if (_scale_amplitude != 1.0f) {
589 Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
596 /* gack. the things we do for users.
601 for (nframes_t n = 0; n < to_read; ++n) {
602 buf[n] += mixdown_buffer[n];
610 AudioRegion::state (bool full)
612 XMLNode& node (Region::state (full));
616 LocaleGuard lg (X_("POSIX"));
618 node.add_property ("flags", enum_2_string (_flags));
620 snprintf (buf, sizeof(buf), "%.12g", _scale_amplitude);
621 node.add_property ("scale-gain", buf);
623 for (uint32_t n=0; n < sources.size(); ++n) {
624 snprintf (buf2, sizeof(buf2), "source-%d", n);
625 sources[n]->id().print (buf, sizeof (buf));
626 node.add_property (buf2, buf);
629 snprintf (buf, sizeof (buf), "%u", (uint32_t) sources.size());
630 node.add_property ("channels", buf);
634 child = node.add_child (X_("FadeIn"));
636 if ((_flags & DefaultFadeIn)) {
637 child->add_property (X_("default"), X_("yes"));
639 child->add_child_nocopy (_fade_in.get_state ());
642 child->add_property (X_("active"), _fade_in_disabled ? X_("no") : X_("yes"));
644 child = node.add_child (X_("FadeOut"));
646 if ((_flags & DefaultFadeOut)) {
647 child->add_property (X_("default"), X_("yes"));
649 child->add_child_nocopy (_fade_out.get_state ());
652 child->add_property (X_("active"), _fade_out_disabled ? X_("no") : X_("yes"));
655 child = node.add_child ("Envelope");
658 bool default_env = false;
660 // If there are only two points, the points are in the start of the region and the end of the region
661 // so, if they are both at 1.0f, that means the default region.
663 if (_envelope.size() == 2 &&
664 _envelope.front()->value == 1.0f &&
665 _envelope.back()->value==1.0f) {
666 if (_envelope.front()->when == 0 && _envelope.back()->when == _length) {
672 child->add_property ("default", "yes");
674 child->add_child_nocopy (_envelope.get_state ());
678 child->add_property ("default", "yes");
681 if (full && _extra_xml) {
682 node.add_child_copy (*_extra_xml);
689 AudioRegion::set_live_state (const XMLNode& node, Change& what_changed, bool send)
691 const XMLNodeList& nlist = node.children();
692 const XMLProperty *prop;
693 LocaleGuard lg (X_("POSIX"));
695 Region::set_live_state (node, what_changed, false);
697 uint32_t old_flags = _flags;
699 if ((prop = node.property ("flags")) != 0) {
700 _flags = Flag (string_2_enum (prop->value(), _flags));
702 //_flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16));
704 _flags = Flag (_flags & ~Region::LeftOfSplit);
705 _flags = Flag (_flags & ~Region::RightOfSplit);
708 if ((old_flags ^ _flags) & Muted) {
709 what_changed = Change (what_changed|MuteChanged);
711 if ((old_flags ^ _flags) & Opaque) {
712 what_changed = Change (what_changed|OpacityChanged);
714 if ((old_flags ^ _flags) & Locked) {
715 what_changed = Change (what_changed|LockChanged);
718 if ((prop = node.property ("scale-gain")) != 0) {
719 _scale_amplitude = atof (prop->value().c_str());
721 _scale_amplitude = 1.0;
724 /* Now find envelope description and other misc child items */
726 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
733 if (child->name() == "Envelope") {
737 if ((prop = child->property ("default")) != 0 || _envelope.set_state (*child)) {
738 set_default_envelope ();
741 _envelope.set_max_xval (_length);
742 _envelope.truncate_end (_length);
744 } else if (child->name() == "FadeIn") {
748 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0 || _fade_in.set_state (*child)) {
749 set_default_fade_in ();
752 } else if (child->name() == "FadeOut") {
756 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0 || _fade_out.set_state (*child)) {
757 set_default_fade_out ();
763 send_change (what_changed);
770 AudioRegion::set_state (const XMLNode& node)
772 /* Region::set_state() calls the virtual set_live_state(),
773 which will get us back to AudioRegion::set_live_state()
774 to handle the relevant stuff.
777 return Region::set_state (node);
781 AudioRegion::set_fade_in_shape (FadeShape shape)
783 set_fade_in (shape, (nframes_t) _fade_in.back()->when);
787 AudioRegion::set_fade_out_shape (FadeShape shape)
789 set_fade_out (shape, (nframes_t) _fade_out.back()->when);
793 AudioRegion::set_fade_in (FadeShape shape, nframes_t len)
800 _fade_in.fast_simple_add (0.0, 0.0);
801 _fade_in.fast_simple_add (len, 1.0);
805 _fade_in.fast_simple_add (0, 0);
806 _fade_in.fast_simple_add (len * 0.389401, 0.0333333);
807 _fade_in.fast_simple_add (len * 0.629032, 0.0861111);
808 _fade_in.fast_simple_add (len * 0.829493, 0.233333);
809 _fade_in.fast_simple_add (len * 0.9447, 0.483333);
810 _fade_in.fast_simple_add (len * 0.976959, 0.697222);
811 _fade_in.fast_simple_add (len, 1);
815 _fade_in.fast_simple_add (0, 0);
816 _fade_in.fast_simple_add (len * 0.0207373, 0.197222);
817 _fade_in.fast_simple_add (len * 0.0645161, 0.525);
818 _fade_in.fast_simple_add (len * 0.152074, 0.802778);
819 _fade_in.fast_simple_add (len * 0.276498, 0.919444);
820 _fade_in.fast_simple_add (len * 0.481567, 0.980556);
821 _fade_in.fast_simple_add (len * 0.767281, 1);
822 _fade_in.fast_simple_add (len, 1);
826 _fade_in.fast_simple_add (0, 0);
827 _fade_in.fast_simple_add (len * 0.0737327, 0.308333);
828 _fade_in.fast_simple_add (len * 0.246544, 0.658333);
829 _fade_in.fast_simple_add (len * 0.470046, 0.886111);
830 _fade_in.fast_simple_add (len * 0.652074, 0.972222);
831 _fade_in.fast_simple_add (len * 0.771889, 0.988889);
832 _fade_in.fast_simple_add (len, 1);
836 _fade_in.fast_simple_add (0, 0);
837 _fade_in.fast_simple_add (len * 0.304147, 0.0694444);
838 _fade_in.fast_simple_add (len * 0.529954, 0.152778);
839 _fade_in.fast_simple_add (len * 0.725806, 0.333333);
840 _fade_in.fast_simple_add (len * 0.847926, 0.558333);
841 _fade_in.fast_simple_add (len * 0.919355, 0.730556);
842 _fade_in.fast_simple_add (len, 1);
847 _fade_in_shape = shape;
849 send_change (FadeInChanged);
853 AudioRegion::set_fade_out (FadeShape shape, nframes_t len)
860 _fade_out.fast_simple_add (len * 0, 1);
861 _fade_out.fast_simple_add (len * 0.023041, 0.697222);
862 _fade_out.fast_simple_add (len * 0.0553, 0.483333);
863 _fade_out.fast_simple_add (len * 0.170507, 0.233333);
864 _fade_out.fast_simple_add (len * 0.370968, 0.0861111);
865 _fade_out.fast_simple_add (len * 0.610599, 0.0333333);
866 _fade_out.fast_simple_add (len * 1, 0);
870 _fade_out.fast_simple_add (len * 0, 1);
871 _fade_out.fast_simple_add (len * 0.228111, 0.988889);
872 _fade_out.fast_simple_add (len * 0.347926, 0.972222);
873 _fade_out.fast_simple_add (len * 0.529954, 0.886111);
874 _fade_out.fast_simple_add (len * 0.753456, 0.658333);
875 _fade_out.fast_simple_add (len * 0.9262673, 0.308333);
876 _fade_out.fast_simple_add (len * 1, 0);
880 _fade_out.fast_simple_add (len * 0, 1);
881 _fade_out.fast_simple_add (len * 0.305556, 1);
882 _fade_out.fast_simple_add (len * 0.548611, 0.991736);
883 _fade_out.fast_simple_add (len * 0.759259, 0.931129);
884 _fade_out.fast_simple_add (len * 0.918981, 0.68595);
885 _fade_out.fast_simple_add (len * 0.976852, 0.22865);
886 _fade_out.fast_simple_add (len * 1, 0);
890 _fade_out.fast_simple_add (len * 0, 1);
891 _fade_out.fast_simple_add (len * 0.080645, 0.730556);
892 _fade_out.fast_simple_add (len * 0.277778, 0.289256);
893 _fade_out.fast_simple_add (len * 0.470046, 0.152778);
894 _fade_out.fast_simple_add (len * 0.695853, 0.0694444);
895 _fade_out.fast_simple_add (len * 1, 0);
899 _fade_out.fast_simple_add (len * 0, 1);
900 _fade_out.fast_simple_add (len * 1, 0);
905 _fade_out_shape = shape;
907 send_change (FadeOutChanged);
911 AudioRegion::set_fade_in_length (nframes_t len)
913 bool changed = _fade_in.extend_to (len);
916 _flags = Flag (_flags & ~DefaultFadeIn);
917 send_change (FadeInChanged);
922 AudioRegion::set_fade_out_length (nframes_t len)
924 bool changed = _fade_out.extend_to (len);
927 _flags = Flag (_flags & ~DefaultFadeOut);
930 send_change (FadeOutChanged);
934 AudioRegion::set_fade_in_active (bool yn)
936 if (yn == (_flags & FadeIn)) {
940 _flags = Flag (_flags|FadeIn);
942 _flags = Flag (_flags & ~FadeIn);
945 send_change (FadeInActiveChanged);
949 AudioRegion::set_fade_out_active (bool yn)
951 if (yn == (_flags & FadeOut)) {
955 _flags = Flag (_flags | FadeOut);
957 _flags = Flag (_flags & ~FadeOut);
960 send_change (FadeOutActiveChanged);
964 AudioRegion::fade_in_is_default () const
966 return _fade_in_shape == Linear && _fade_in.back()->when == 64;
970 AudioRegion::fade_out_is_default () const
972 return _fade_out_shape == Linear && _fade_out.back()->when == 64;
976 AudioRegion::set_default_fade_in ()
978 set_fade_in (Linear, 64);
982 AudioRegion::set_default_fade_out ()
984 set_fade_out (Linear, 64);
988 AudioRegion::set_default_fades ()
990 _fade_in_disabled = 0;
991 _fade_out_disabled = 0;
992 set_default_fade_in ();
993 set_default_fade_out ();
997 AudioRegion::set_default_envelope ()
1001 _envelope.fast_simple_add (0, 1.0f);
1002 _envelope.fast_simple_add (_length, 1.0f);
1007 AudioRegion::recompute_at_end ()
1009 /* our length has changed. recompute a new final point by interpolating
1010 based on the the existing curve.
1013 _envelope.freeze ();
1014 _envelope.truncate_end (_length);
1015 _envelope.set_max_xval (_length);
1018 if (_fade_in.back()->when > _length) {
1019 _fade_in.extend_to (_length);
1020 send_change (FadeInChanged);
1023 if (_fade_out.back()->when > _length) {
1024 _fade_out.extend_to (_length);
1025 send_change (FadeOutChanged);
1030 AudioRegion::recompute_at_start ()
1032 /* as above, but the shift was from the front */
1034 _envelope.truncate_start (_length);
1036 if (_fade_in.back()->when > _length) {
1037 _fade_in.extend_to (_length);
1038 send_change (FadeInChanged);
1041 if (_fade_out.back()->when > _length) {
1042 _fade_out.extend_to (_length);
1043 send_change (FadeOutChanged);
1048 AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<AudioRegion> >& v) const
1054 if (sources.size() < 2) {
1060 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1063 srcs.push_back (*i);
1067 if (sources.size() == 2) {
1075 new_name += ('0' + n + 1);
1078 /* create a copy with just one source. prevent if from being thought of as "whole file" even if
1079 it covers the entire source file(s).
1082 Flag f = Flag (_flags & ~WholeFile);
1084 boost::shared_ptr<Region> r = RegionFactory::create (srcs, _start, _length, new_name, _layer, f);
1085 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r);
1096 AudioRegion::source_deleted ()
1103 AudioRegion::master_source_names ()
1105 SourceList::iterator i;
1107 vector<string> names;
1108 for (i = master_sources.begin(); i != master_sources.end(); ++i) {
1109 names.push_back((*i)->name());
1116 AudioRegion::source_equivalent (boost::shared_ptr<const Region> o) const
1118 boost::shared_ptr<const AudioRegion> other = boost::dynamic_pointer_cast<const AudioRegion>(o);
1123 SourceList::const_iterator i;
1124 SourceList::const_iterator io;
1126 for (i = sources.begin(), io = other->sources.begin(); i != sources.end() && io != other->sources.end(); ++i, ++io) {
1127 if ((*i)->id() != (*io)->id()) {
1132 for (i = master_sources.begin(), io = other->master_sources.begin(); i != master_sources.end() && io != other->master_sources.end(); ++i, ++io) {
1133 if ((*i)->id() != (*io)->id()) {
1142 AudioRegion::apply (AudioFilter& filter)
1144 boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (shared_from_this());
1145 return filter.run (ar);
1149 AudioRegion::exportme (Session& session, AudioExportSpecification& spec)
1151 const nframes_t blocksize = 4096;
1155 spec.channels = sources.size();
1157 if (spec.prepare (blocksize, session.frame_rate())) {
1162 spec.total_frames = _length;
1164 while (spec.pos < _length && !spec.stop) {
1167 /* step 1: interleave */
1169 to_read = min (_length - spec.pos, blocksize);
1171 if (spec.channels == 1) {
1173 if (sources.front()->read (spec.dataF, _start + spec.pos, to_read) != to_read) {
1179 Sample buf[blocksize];
1181 for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1183 if (sources[chan]->read (buf, _start + spec.pos, to_read) != to_read) {
1187 for (nframes_t x = 0; x < to_read; ++x) {
1188 spec.dataF[chan+(x*spec.channels)] = buf[x];
1193 if (spec.process (to_read)) {
1197 spec.pos += to_read;
1198 spec.progress = (double) spec.pos /_length;
1205 spec.running = false;
1206 spec.status = status;
1212 boost::shared_ptr<Region>
1213 AudioRegion::get_parent() const
1215 boost::shared_ptr<Playlist> pl (playlist());
1218 boost::shared_ptr<AudioRegion> ar;
1219 boost::shared_ptr<AudioRegion const> grrr2 = boost::dynamic_pointer_cast<AudioRegion const> (shared_from_this());
1221 if (grrr2 && (ar = pl->session().find_whole_file_parent (grrr2))) {
1222 return boost::static_pointer_cast<Region> (ar);
1226 return boost::shared_ptr<Region>();
1230 AudioRegion::set_scale_amplitude (gain_t g)
1232 boost::shared_ptr<Playlist> pl (playlist());
1234 _scale_amplitude = g;
1236 /* tell the diskstream we're in */
1242 /* tell everybody else */
1244 send_change (ScaleAmplitudeChanged);
1248 AudioRegion::normalize_to (float target_dB)
1250 const nframes_t blocksize = 64 * 1024;
1251 Sample buf[blocksize];
1256 gain_t target = dB_to_coefficient (target_dB);
1258 if (target == 1.0f) {
1259 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1260 that we may have clipped.
1262 target -= FLT_EPSILON;
1266 fend = _start + _length;
1268 /* first pass: find max amplitude */
1270 while (fpos < fend) {
1274 to_read = min (fend - fpos, blocksize);
1276 for (n = 0; n < n_channels(); ++n) {
1280 if (source (n)->read (buf, fpos, to_read) != to_read) {
1284 maxamp = Session::compute_peak (buf, to_read, maxamp);
1290 if (maxamp == 0.0f) {
1291 /* don't even try */
1295 if (maxamp == target) {
1296 /* we can't do anything useful */
1300 /* compute scale factor */
1302 _scale_amplitude = target/maxamp;
1304 /* tell the diskstream we're in */
1306 boost::shared_ptr<Playlist> pl (playlist());
1312 /* tell everybody else */
1314 send_change (ScaleAmplitudeChanged);
1318 AudioRegion::fade_in_changed ()
1320 send_change (FadeInChanged);
1324 AudioRegion::fade_out_changed ()
1326 send_change (FadeOutChanged);
1330 AudioRegion::envelope_changed ()
1332 send_change (EnvelopeChanged);
1336 AudioRegion::suspend_fade_in ()
1338 if (++_fade_in_disabled == 1) {
1339 if (fade_in_is_default()) {
1340 set_fade_in_active (false);
1346 AudioRegion::resume_fade_in ()
1348 if (--_fade_in_disabled == 0 && _fade_in_disabled) {
1349 set_fade_in_active (true);
1354 AudioRegion::suspend_fade_out ()
1356 if (++_fade_out_disabled == 1) {
1357 if (fade_out_is_default()) {
1358 set_fade_out_active (false);
1364 AudioRegion::resume_fade_out ()
1366 if (--_fade_out_disabled == 0 &&_fade_out_disabled) {
1367 set_fade_out_active (true);
1372 AudioRegion::speed_mismatch (float sr) const
1374 if (sources.empty()) {
1375 /* impossible, but ... */
1379 float fsr = sources.front()->sample_rate();
1385 AudioRegion::source_offset_changed ()
1387 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(sources.front());
1389 if (afs && afs->destructive()) {
1390 // set_start (source()->natural_position(), this);
1391 set_position (source()->natural_position(), this);
1396 AudioRegion::set_playlist (boost::weak_ptr<Playlist> wpl)
1398 boost::shared_ptr<Playlist> old_playlist = (_playlist.lock());
1400 boost::shared_ptr<Playlist> pl (wpl.lock());
1402 if (old_playlist == pl) {
1406 Region::set_playlist (wpl);
1410 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1411 (*i)->remove_playlist (_playlist);
1412 (*i)->add_playlist (pl);
1415 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1416 (*i)->add_playlist (pl);
1421 for (SourceList::const_iterator i = sources.begin(); i != sources.end(); ++i) {
1422 (*i)->remove_playlist (old_playlist);
1430 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)
1432 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (nframes_t) npeaks, (nframes_t) start, (nframes_t) cnt, n_chan,samples_per_unit);
1435 uint32_t region_length_from_c (void *arg)
1438 return ((AudioRegion *) arg)->length();
1441 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1443 return ( (AudioRegion *) arg)->source()->available_peaks (zoom_factor) ;