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 <pbd/basename.h>
31 #include <pbd/lockmonitor.h>
32 #include <pbd/xml++.h>
34 #include <ardour/audioregion.h>
35 #include <ardour/session.h>
36 #include <ardour/gain.h>
37 #include <ardour/dB.h>
38 #include <ardour/playlist.h>
39 #include <ardour/audiofilter.h>
45 using namespace ARDOUR;
47 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
49 Change AudioRegion::FadeInChanged = ARDOUR::new_change();
50 Change AudioRegion::FadeOutChanged = ARDOUR::new_change();
51 Change AudioRegion::FadeInActiveChanged = ARDOUR::new_change();
52 Change AudioRegion::FadeOutActiveChanged = ARDOUR::new_change();
53 Change AudioRegion::EnvelopeActiveChanged = ARDOUR::new_change();
54 Change AudioRegion::ScaleAmplitudeChanged = ARDOUR::new_change();
55 Change AudioRegion::EnvelopeChanged = ARDOUR::new_change();
57 AudioRegionState::AudioRegionState (string why)
59 _fade_in (0.0, 2.0, 1.0, false),
60 _fade_out (0.0, 2.0, 1.0, false),
61 _envelope (0.0, 2.0, 1.0, false)
65 AudioRegion::AudioRegion (Source& src, jack_nframes_t start, jack_nframes_t length, bool announce)
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 _scale_amplitude = 1.0;
80 set_default_envelope ();
81 save_state ("initial state");
83 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
86 CheckNewRegion (this); /* EMIT SIGNAL */
90 AudioRegion::AudioRegion (Source& src, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t layer, Flag flags, bool announce)
91 : Region (start, length, name, layer, flags),
92 _fade_in (0.0, 2.0, 1.0, false),
93 _fade_out (0.0, 2.0, 1.0, false),
94 _envelope (0.0, 2.0, 1.0, false)
96 /* basic AudioRegion constructor */
98 sources.push_back (&src);
99 master_sources.push_back (&src);
100 src.GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
102 _scale_amplitude = 1.0;
104 set_default_fades ();
105 set_default_envelope ();
106 save_state ("initial state");
108 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
111 CheckNewRegion (this); /* EMIT SIGNAL */
115 AudioRegion::AudioRegion (SourceList& srcs, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t layer, Flag flags, bool announce)
116 : Region (start, length, name, layer, flags),
117 _fade_in (0.0, 2.0, 1.0, false),
118 _fade_out (0.0, 2.0, 1.0, false),
119 _envelope (0.0, 2.0, 1.0, false)
121 /* basic AudioRegion constructor */
123 for (SourceList::iterator i=srcs.begin(); i != srcs.end(); ++i) {
124 sources.push_back (*i);
125 master_sources.push_back (*i);
126 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
129 _scale_amplitude = 1.0;
131 set_default_fades ();
132 set_default_envelope ();
133 save_state ("initial state");
135 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
138 CheckNewRegion (this); /* EMIT SIGNAL */
143 AudioRegion::AudioRegion (const AudioRegion& other, jack_nframes_t offset, jack_nframes_t length, const string& name, layer_t layer, Flag flags, bool announce)
144 : Region (other, offset, length, name, layer, flags),
145 _fade_in (other._fade_in),
146 _fade_out (other._fade_out),
147 _envelope (other._envelope, (double) offset, (double) offset + length)
149 /* create a new AudioRegion, that is part of an existing one */
151 set<Source*> unique_srcs;
153 for (SourceList::const_iterator i= other.sources.begin(); i != other.sources.end(); ++i) {
154 sources.push_back (*i);
155 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
156 unique_srcs.insert (*i);
159 for (SourceList::const_iterator i = other.master_sources.begin(); i != other.master_sources.end(); ++i) {
160 if (unique_srcs.find (*i) == unique_srcs.end()) {
161 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
163 master_sources.push_back (*i);
166 /* return to default fades if the existing ones are too long */
168 if (_flags & LeftOfSplit) {
169 if (_fade_in.back()->when >= _length) {
170 set_default_fade_in ();
172 set_default_fade_out ();
173 _flags = Flag (_flags & ~Region::RightOfSplit);
176 if (_flags & RightOfSplit) {
177 if (_fade_out.back()->when >= _length) {
178 set_default_fade_out ();
180 set_default_fade_in ();
181 _flags = Flag (_flags & ~Region::LeftOfSplit);
184 _scale_amplitude = other._scale_amplitude;
186 _fade_in_disabled = 0;
187 _fade_out_disabled = 0;
189 save_state ("initial state");
191 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
194 CheckNewRegion (this); /* EMIT SIGNAL */
198 AudioRegion::AudioRegion (const AudioRegion &other)
200 _fade_in (other._fade_in),
201 _fade_out (other._fade_out),
202 _envelope (other._envelope)
204 /* Pure copy constructor */
206 set<Source*> unique_srcs;
208 for (SourceList::const_iterator i = other.sources.begin(); i != other.sources.end(); ++i) {
209 sources.push_back (*i);
210 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
211 unique_srcs.insert (*i);
214 for (SourceList::const_iterator i = other.master_sources.begin(); i != other.master_sources.end(); ++i) {
215 master_sources.push_back (*i);
216 if (unique_srcs.find (*i) == unique_srcs.end()) {
217 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
221 _scale_amplitude = other._scale_amplitude;
222 _envelope = other._envelope;
224 _fade_in_disabled = 0;
225 _fade_out_disabled = 0;
227 save_state ("initial state");
229 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
231 /* NOTE: no CheckNewRegion signal emitted here. This is the copy constructor */
234 AudioRegion::AudioRegion (Source& src, const XMLNode& node)
236 _fade_in (0.0, 2.0, 1.0, false),
237 _fade_out (0.0, 2.0, 1.0, false),
238 _envelope (0.0, 2.0, 1.0, false)
240 sources.push_back (&src);
241 master_sources.push_back (&src);
242 src.GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
244 set_default_fades ();
246 if (set_state (node)) {
247 throw failed_constructor();
250 save_state ("initial state");
252 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
254 CheckNewRegion (this); /* EMIT SIGNAL */
257 AudioRegion::AudioRegion (SourceList& srcs, const XMLNode& node)
259 _fade_in (0.0, 2.0, 1.0, false),
260 _fade_out (0.0, 2.0, 1.0, false),
261 _envelope (0.0, 2.0, 1.0, false)
263 /* basic AudioRegion constructor */
265 set<Source*> unique_srcs;
267 for (SourceList::iterator i=srcs.begin(); i != srcs.end(); ++i) {
268 sources.push_back (*i);
269 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
270 unique_srcs.insert (*i);
273 for (SourceList::iterator i = srcs.begin(); i != srcs.end(); ++i) {
274 master_sources.push_back (*i);
275 if (unique_srcs.find (*i) == unique_srcs.end()) {
276 (*i)->GoingAway.connect (mem_fun (*this, &AudioRegion::source_deleted));
280 set_default_fades ();
281 _scale_amplitude = 1.0;
283 if (set_state (node)) {
284 throw failed_constructor();
287 save_state ("initial state");
289 _envelope.StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed));
291 CheckNewRegion (this); /* EMIT SIGNAL */
294 AudioRegion::~AudioRegion ()
300 AudioRegion::state_factory (std::string why) const
302 AudioRegionState* state = new AudioRegionState (why);
304 Region::store_state (*state);
306 state->_fade_in = _fade_in;
307 state->_fade_out = _fade_out;
308 state->_envelope = _envelope;
309 state->_scale_amplitude = _scale_amplitude;
310 state->_fade_in_disabled = _fade_in_disabled;
311 state->_fade_out_disabled = _fade_out_disabled;
317 AudioRegion::restore_state (StateManager::State& sstate)
319 AudioRegionState* state = dynamic_cast<AudioRegionState*> (&sstate);
321 Change what_changed = Region::restore_and_return_flags (*state);
323 if (_flags != Flag (state->_flags)) {
325 uint32_t old_flags = _flags;
327 _flags = Flag (state->_flags);
329 if ((old_flags ^ state->_flags) & EnvelopeActive) {
330 what_changed = Change (what_changed|EnvelopeActiveChanged);
334 if (!(_fade_in == state->_fade_in)) {
335 _fade_in = state->_fade_in;
336 what_changed = Change (what_changed|FadeInChanged);
339 if (!(_fade_out == state->_fade_out)) {
340 _fade_out = state->_fade_out;
341 what_changed = Change (what_changed|FadeOutChanged);
344 if (_scale_amplitude != state->_scale_amplitude) {
345 _scale_amplitude = state->_scale_amplitude;
346 what_changed = Change (what_changed|ScaleAmplitudeChanged);
349 if (_fade_in_disabled != state->_fade_in_disabled) {
350 if (_fade_in_disabled == 0 && state->_fade_in_disabled) {
351 set_fade_in_active (false);
352 } if (_fade_in_disabled && state->_fade_in_disabled == 0) {
353 set_fade_in_active (true);
355 _fade_in_disabled = state->_fade_in_disabled;
358 if (_fade_out_disabled != state->_fade_out_disabled) {
359 if (_fade_out_disabled == 0 && state->_fade_out_disabled) {
360 set_fade_out_active (false);
361 } if (_fade_out_disabled && state->_fade_out_disabled == 0) {
362 set_fade_out_active (true);
364 _fade_out_disabled = state->_fade_out_disabled;
367 /* XXX need a way to test stored state versus current for envelopes */
369 _envelope = state->_envelope;
370 what_changed = Change (what_changed);
376 AudioRegion::get_memento() const
378 return sigc::bind (mem_fun (*(const_cast<AudioRegion *> (this)), &StateManager::use_state), _current_state_id);
382 AudioRegion::verify_length (jack_nframes_t len)
384 for (uint32_t n=0; n < sources.size(); ++n) {
385 if (_start > sources[n]->length() - len) {
393 AudioRegion::verify_start_and_length (jack_nframes_t new_start, jack_nframes_t new_length)
395 for (uint32_t n=0; n < sources.size(); ++n) {
396 if (new_length > sources[n]->length() - new_start) {
403 AudioRegion::verify_start (jack_nframes_t pos)
405 for (uint32_t n=0; n < sources.size(); ++n) {
406 if (pos > sources[n]->length() - _length) {
414 AudioRegion::verify_start_mutable (jack_nframes_t& new_start)
416 for (uint32_t n=0; n < sources.size(); ++n) {
417 if (new_start > sources[n]->length() - _length) {
418 new_start = sources[n]->length() - _length;
424 AudioRegion::set_envelope_active (bool yn)
426 if (envelope_active() != yn) {
429 snprintf (buf, sizeof (buf), "envelope active");
430 _flags = Flag (_flags|EnvelopeActive);
432 snprintf (buf, sizeof (buf), "envelope off");
433 _flags = Flag (_flags & ~EnvelopeActive);
438 send_change (EnvelopeActiveChanged);
444 AudioRegion::read_peaks (PeakData *buf, jack_nframes_t npeaks, jack_nframes_t offset, jack_nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
446 if (chan_n >= sources.size()) {
450 if (sources[chan_n]->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
453 if (_scale_amplitude != 1.0) {
454 for (jack_nframes_t n = 0; n < npeaks; ++n) {
455 buf[n].max *= _scale_amplitude;
456 buf[n].min *= _scale_amplitude;
464 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, char * workbuf, jack_nframes_t position,
466 uint32_t chan_n, jack_nframes_t read_frames, jack_nframes_t skip_frames) const
468 return _read_at (sources, buf, mixdown_buffer, gain_buffer, workbuf, position, cnt, chan_n, read_frames, skip_frames);
472 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, char * workbuf, jack_nframes_t position,
473 jack_nframes_t cnt, uint32_t chan_n) const
475 return _read_at (master_sources, buf, mixdown_buffer, gain_buffer, workbuf, position, cnt, chan_n, 0, 0);
479 AudioRegion::_read_at (const SourceList& srcs, Sample *buf, Sample *mixdown_buffer, float *gain_buffer, char * workbuf,
480 jack_nframes_t position, jack_nframes_t cnt,
481 uint32_t chan_n, jack_nframes_t read_frames, jack_nframes_t skip_frames) const
483 jack_nframes_t internal_offset;
484 jack_nframes_t buf_offset;
485 jack_nframes_t to_read;
487 /* precondition: caller has verified that we cover the desired section */
489 if (chan_n >= sources.size()) {
490 return 0; /* read nothing */
493 if (position < _position) {
495 buf_offset = _position - position;
498 internal_offset = position - _position;
502 if (internal_offset >= _length) {
503 return 0; /* read nothing */
507 if ((to_read = min (cnt, _length - internal_offset)) == 0) {
508 return 0; /* read nothing */
512 /* overwrite whatever is there */
513 mixdown_buffer = buf + buf_offset;
515 mixdown_buffer += buf_offset;
519 return 0; /* read nothing */
522 _read_data_count = 0;
524 if (srcs[chan_n]->read (mixdown_buffer, _start + internal_offset, to_read, workbuf) != to_read) {
525 return 0; /* "read nothing" */
528 _read_data_count += srcs[chan_n]->read_data_count();
532 if (_flags & FadeIn) {
534 jack_nframes_t fade_in_length = (jack_nframes_t) _fade_in.back()->when;
536 /* see if this read is within the fade in */
538 if (internal_offset < fade_in_length) {
540 jack_nframes_t limit;
542 limit = min (to_read, fade_in_length - internal_offset);
544 _fade_in.get_vector (internal_offset, internal_offset+limit, gain_buffer, limit);
546 for (jack_nframes_t n = 0; n < limit; ++n) {
547 mixdown_buffer[n] *= gain_buffer[n];
554 if (_flags & FadeOut) {
559 /* see if some part of this read is within the fade out */
561 /* ................. >| REGION
567 _length - fade_out_length
570 ^internal_offset + to_read
572 we need the intersection of [internal_offset,internal_offset+to_read] with
573 [_length - fade_out_length, _length]
578 jack_nframes_t fade_out_length = (jack_nframes_t) _fade_out.back()->when;
579 jack_nframes_t fade_interval_start = max(internal_offset, _length-fade_out_length);
580 jack_nframes_t fade_interval_end = min(internal_offset + to_read, _length);
582 if (fade_interval_end > fade_interval_start) {
583 /* (part of the) the fade out is in this buffer */
585 jack_nframes_t limit = fade_interval_end - fade_interval_start;
586 jack_nframes_t curve_offset = fade_interval_start - (_length-fade_out_length);
587 jack_nframes_t fade_offset = fade_interval_start - internal_offset;
589 _fade_out.get_vector (curve_offset,curve_offset+limit, gain_buffer, limit);
591 for (jack_nframes_t n = 0, m = fade_offset; n < limit; ++n, ++m) {
592 mixdown_buffer[m] *= gain_buffer[n];
598 /* Regular gain curves */
600 if (envelope_active()) {
601 _envelope.get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
603 if (_scale_amplitude != 1.0f) {
604 for (jack_nframes_t n = 0; n < to_read; ++n) {
605 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
608 for (jack_nframes_t n = 0; n < to_read; ++n) {
609 mixdown_buffer[n] *= gain_buffer[n];
612 } else if (_scale_amplitude != 1.0f) {
613 Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
618 /* gack. the things we do for users.
623 for (jack_nframes_t n = 0; n < to_read; ++n) {
624 buf[n] += mixdown_buffer[n];
632 AudioRegion::get_state ()
638 AudioRegion::state (bool full)
640 XMLNode& node (Region::state (full));
644 LocaleGuard lg (X_("POSIX"));
646 snprintf (buf, sizeof (buf), "0x%x", (int) _flags);
647 node.add_property ("flags", buf);
648 snprintf (buf, sizeof(buf), "%f", _scale_amplitude);
649 node.add_property ("scale-gain", buf);
651 for (uint32_t n=0; n < sources.size(); ++n) {
652 snprintf (buf2, sizeof(buf2), "source-%d", n);
653 snprintf (buf, sizeof(buf), "%" PRIu64, sources[n]->id());
654 node.add_property (buf2, buf);
657 snprintf (buf, sizeof (buf), "%u", (uint32_t) sources.size());
658 node.add_property ("channels", buf);
662 child = node.add_child (X_("FadeIn"));
664 if ((_flags & DefaultFadeIn)) {
665 child->add_property (X_("default"), X_("yes"));
667 _fade_in.store_state (*child);
670 child = node.add_child (X_("FadeOut"));
672 if ((_flags & DefaultFadeOut)) {
673 child->add_property (X_("default"), X_("yes"));
675 _fade_out.store_state (*child);
679 child = node.add_child ("Envelope");
682 bool default_env = false;
684 // If there are only two points, the points are in the start of the region and the end of the region
685 // so, if they are both at 1.0f, that means the default region.
686 if (_envelope.size() == 2 &&
687 _envelope.front()->value == 1.0f &&
688 _envelope.back()->value==1.0f) {
689 if (_envelope.front()->when == 0 && _envelope.back()->when == _length) {
695 child->add_property ("default", "yes");
697 _envelope.store_state (*child);
700 child->add_property ("default", "yes");
703 if (full && _extra_xml) {
704 node.add_child_copy (*_extra_xml);
711 AudioRegion::set_state (const XMLNode& node)
713 const XMLNodeList& nlist = node.children();
714 const XMLProperty *prop;
715 LocaleGuard lg (X_("POSIX"));
717 Region::set_state (node);
719 if ((prop = node.property ("flags")) != 0) {
720 _flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16));
723 if ((prop = node.property ("scale-gain")) != 0) {
724 _scale_amplitude = atof (prop->value().c_str());
726 _scale_amplitude = 1.0;
729 /* Now find envelope description and other misc child items */
731 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
738 if (child->name() == "Envelope") {
742 if ((prop = child->property ("default")) != 0) {
743 set_default_envelope ();
745 _envelope.load_state (*child);
748 _envelope.set_max_xval (_length);
749 _envelope.truncate_end (_length);
751 } else if (child->name() == "FadeIn") {
755 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
756 set_default_fade_in ();
759 _fade_in.load_state (*child);
762 } else if (child->name() == "FadeOut") {
766 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
767 set_default_fade_out ();
769 _fade_out.load_state (*child);
778 AudioRegion::set_fade_in_shape (FadeShape shape)
780 set_fade_in (shape, (jack_nframes_t) _fade_in.back()->when);
784 AudioRegion::set_fade_out_shape (FadeShape shape)
786 set_fade_out (shape, (jack_nframes_t) _fade_out.back()->when);
790 AudioRegion::set_fade_in (FadeShape shape, jack_nframes_t len)
797 _fade_in.add (0.0, 0.0);
798 _fade_in.add (len, 1.0);
803 _fade_in.add (len * 0.389401, 0.0333333);
804 _fade_in.add (len * 0.629032, 0.0861111);
805 _fade_in.add (len * 0.829493, 0.233333);
806 _fade_in.add (len * 0.9447, 0.483333);
807 _fade_in.add (len * 0.976959, 0.697222);
808 _fade_in.add (len, 1);
813 _fade_in.add (len * 0.0207373, 0.197222);
814 _fade_in.add (len * 0.0645161, 0.525);
815 _fade_in.add (len * 0.152074, 0.802778);
816 _fade_in.add (len * 0.276498, 0.919444);
817 _fade_in.add (len * 0.481567, 0.980556);
818 _fade_in.add (len * 0.767281, 1);
819 _fade_in.add (len, 1);
824 _fade_in.add (len * 0.0737327, 0.308333);
825 _fade_in.add (len * 0.246544, 0.658333);
826 _fade_in.add (len * 0.470046, 0.886111);
827 _fade_in.add (len * 0.652074, 0.972222);
828 _fade_in.add (len * 0.771889, 0.988889);
829 _fade_in.add (len, 1);
834 _fade_in.add (len * 0.304147, 0.0694444);
835 _fade_in.add (len * 0.529954, 0.152778);
836 _fade_in.add (len * 0.725806, 0.333333);
837 _fade_in.add (len * 0.847926, 0.558333);
838 _fade_in.add (len * 0.919355, 0.730556);
839 _fade_in.add (len, 1);
844 _fade_in_shape = shape;
847 save_state (_("fade in change"));
850 send_change (FadeInChanged);
854 AudioRegion::set_fade_out (FadeShape shape, jack_nframes_t len)
861 _fade_out.add (len * 0, 1);
862 _fade_out.add (len * 0.023041, 0.697222);
863 _fade_out.add (len * 0.0553, 0.483333);
864 _fade_out.add (len * 0.170507, 0.233333);
865 _fade_out.add (len * 0.370968, 0.0861111);
866 _fade_out.add (len * 0.610599, 0.0333333);
867 _fade_out.add (len * 1, 0);
871 _fade_out.add (len * 0, 1);
872 _fade_out.add (len * 0.228111, 0.988889);
873 _fade_out.add (len * 0.347926, 0.972222);
874 _fade_out.add (len * 0.529954, 0.886111);
875 _fade_out.add (len * 0.753456, 0.658333);
876 _fade_out.add (len * 0.9262673, 0.308333);
877 _fade_out.add (len * 1, 0);
881 _fade_out.add (len * 0, 1);
882 _fade_out.add (len * 0.305556, 1);
883 _fade_out.add (len * 0.548611, 0.991736);
884 _fade_out.add (len * 0.759259, 0.931129);
885 _fade_out.add (len * 0.918981, 0.68595);
886 _fade_out.add (len * 0.976852, 0.22865);
887 _fade_out.add (len * 1, 0);
891 _fade_out.add (len * 0, 1);
892 _fade_out.add (len * 0.080645, 0.730556);
893 _fade_out.add (len * 0.277778, 0.289256);
894 _fade_out.add (len * 0.470046, 0.152778);
895 _fade_out.add (len * 0.695853, 0.0694444);
896 _fade_out.add (len * 1, 0);
900 _fade_out.add (len * 0, 1);
901 _fade_out.add (len * 1, 0);
906 _fade_out_shape = shape;
909 save_state (_("fade in change"));
912 send_change (FadeOutChanged);
916 AudioRegion::set_fade_in_length (jack_nframes_t len)
918 bool changed = _fade_in.extend_to (len);
921 _flags = Flag (_flags & ~DefaultFadeIn);
925 snprintf (buf, sizeof (buf), "fade in length changed to %u", len);
929 send_change (FadeInChanged);
934 AudioRegion::set_fade_out_length (jack_nframes_t len)
936 bool changed = _fade_out.extend_to (len);
939 _flags = Flag (_flags & ~DefaultFadeOut);
943 snprintf (buf, sizeof (buf), "fade out length changed to %u", len);
948 send_change (FadeOutChanged);
952 AudioRegion::set_fade_in_active (bool yn)
954 if (yn == (_flags & FadeIn)) {
958 _flags = Flag (_flags|FadeIn);
960 _flags = Flag (_flags & ~FadeIn);
963 send_change (FadeInActiveChanged);
967 AudioRegion::set_fade_out_active (bool yn)
969 if (yn == (_flags & FadeOut)) {
973 _flags = Flag (_flags | FadeOut);
975 _flags = Flag (_flags & ~FadeOut);
978 send_change (FadeOutActiveChanged);
982 AudioRegion::set_default_fade_in ()
984 set_fade_in (Linear, 64);
988 AudioRegion::set_default_fade_out ()
990 set_fade_out (Linear, 64);
994 AudioRegion::set_default_fades ()
996 _fade_in_disabled = 0;
997 _fade_out_disabled = 0;
998 set_default_fade_in ();
999 set_default_fade_out ();
1003 AudioRegion::set_default_envelope ()
1005 _envelope.freeze ();
1007 _envelope.add (0, 1.0f);
1008 _envelope.add (_length, 1.0f);
1013 AudioRegion::recompute_at_end ()
1015 /* our length has changed. recompute a new final point by interpolating
1016 based on the the existing curve.
1019 _envelope.freeze ();
1020 _envelope.truncate_end (_length);
1021 _envelope.set_max_xval (_length);
1024 if (_fade_in.back()->when > _length) {
1025 _fade_in.extend_to (_length);
1026 send_change (FadeInChanged);
1029 if (_fade_out.back()->when > _length) {
1030 _fade_out.extend_to (_length);
1031 send_change (FadeOutChanged);
1036 AudioRegion::recompute_at_start ()
1038 /* as above, but the shift was from the front */
1040 _envelope.truncate_start (_length);
1042 if (_fade_in.back()->when > _length) {
1043 _fade_in.extend_to (_length);
1044 send_change (FadeInChanged);
1047 if (_fade_out.back()->when > _length) {
1048 _fade_out.extend_to (_length);
1049 send_change (FadeOutChanged);
1054 AudioRegion::separate_by_channel (Session& session, vector<AudioRegion*>& v) const
1059 for (SourceList::const_iterator i = master_sources.begin(); i != master_sources.end(); ++i) {
1062 srcs.push_back (*i);
1064 /* generate a new name */
1066 if (session.region_name (new_name, _name)) {
1070 /* create a copy with just one source */
1072 v.push_back (new AudioRegion (srcs, _start, _length, new_name, _layer, _flags));
1079 AudioRegion::source_deleted (Source* ignored)
1085 AudioRegion::lock_sources ()
1087 SourceList::iterator i;
1088 set<Source*> unique_srcs;
1090 for (i = sources.begin(); i != sources.end(); ++i) {
1091 unique_srcs.insert (*i);
1095 for (i = master_sources.begin(); i != master_sources.end(); ++i) {
1096 if (unique_srcs.find (*i) == unique_srcs.end()) {
1103 AudioRegion::unlock_sources ()
1105 SourceList::iterator i;
1106 set<Source*> unique_srcs;
1108 for (i = sources.begin(); i != sources.end(); ++i) {
1109 unique_srcs.insert (*i);
1113 for (i = master_sources.begin(); i != master_sources.end(); ++i) {
1114 if (unique_srcs.find (*i) == unique_srcs.end()) {
1121 AudioRegion::master_source_names ()
1123 SourceList::iterator i;
1125 vector<string> names;
1126 for (i = master_sources.begin(); i != master_sources.end(); ++i) {
1127 names.push_back((*i)->name());
1134 AudioRegion::region_list_equivalent (const AudioRegion& other)
1136 return size_equivalent (other) && source_equivalent (other) && _name == other._name;
1140 AudioRegion::source_equivalent (const AudioRegion& other)
1142 SourceList::iterator i;
1143 SourceList::const_iterator io;
1145 for (i = sources.begin(), io = other.sources.begin(); i != sources.end() && io != other.sources.end(); ++i, ++io) {
1146 if ((*i)->id() != (*io)->id()) {
1151 for (i = master_sources.begin(), io = other.master_sources.begin(); i != master_sources.end() && io != other.master_sources.end(); ++i, ++io) {
1152 if ((*i)->id() != (*io)->id()) {
1161 AudioRegion::equivalent (const AudioRegion& other)
1163 return _start == other._start &&
1164 _position == other._position &&
1165 _length == other._length;
1169 AudioRegion::size_equivalent (const AudioRegion& other)
1171 return _start == other._start &&
1172 _length == other._length;
1176 AudioRegion::apply (AudioFilter& filter)
1178 return filter.run (*this);
1182 AudioRegion::exportme (Session& session, AudioExportSpecification& spec)
1184 const jack_nframes_t blocksize = 4096;
1185 jack_nframes_t to_read;
1188 spec.channels = sources.size();
1190 if (spec.prepare (blocksize, session.frame_rate())) {
1195 spec.total_frames = _length;
1197 while (spec.pos < _length && !spec.stop) {
1200 /* step 1: interleave */
1202 to_read = min (_length - spec.pos, blocksize);
1204 if (spec.channels == 1) {
1206 if (sources.front()->read (spec.dataF, _start + spec.pos, to_read, 0) != to_read) {
1212 Sample buf[blocksize];
1214 for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1216 if (sources[chan]->read (buf, _start + spec.pos, to_read, 0) != to_read) {
1220 for (jack_nframes_t x = 0; x < to_read; ++x) {
1221 spec.dataF[chan+(x*spec.channels)] = buf[x];
1226 if (spec.process (to_read)) {
1230 spec.pos += to_read;
1231 spec.progress = (double) spec.pos /_length;
1238 spec.running = false;
1239 spec.status = status;
1246 AudioRegion::get_parent()
1251 r = _playlist->session().find_whole_file_parent (*this);
1258 AudioRegion::set_scale_amplitude (gain_t g)
1260 _scale_amplitude = g;
1262 /* tell the diskstream we're in */
1265 _playlist->Modified();
1268 /* tell everybody else */
1270 send_change (ScaleAmplitudeChanged);
1274 AudioRegion::normalize_to (float target_dB)
1276 const jack_nframes_t blocksize = 256 * 1048;
1277 Sample buf[blocksize];
1278 char workbuf[blocksize * 4];
1279 jack_nframes_t fpos;
1280 jack_nframes_t fend;
1281 jack_nframes_t to_read;
1283 gain_t target = dB_to_coefficient (target_dB);
1285 if (target == 1.0f) {
1286 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1287 that we may have clipped.
1289 target -= FLT_EPSILON;
1293 fend = _start + _length;
1295 /* first pass: find max amplitude */
1297 while (fpos < fend) {
1301 to_read = min (fend - fpos, blocksize);
1303 for (n = 0; n < n_channels(); ++n) {
1307 if (source (n).read (buf, fpos, to_read, workbuf) != to_read) {
1311 maxamp = Session::compute_peak (buf, to_read, maxamp);
1317 if (maxamp == 0.0f) {
1318 /* don't even try */
1322 if (maxamp == target) {
1323 /* we can't do anything useful */
1327 /* compute scale factor */
1329 _scale_amplitude = target/maxamp;
1333 snprintf (buf, sizeof (buf), _("normalized to %.2fdB"), target_dB);
1337 /* tell the diskstream we're in */
1340 _playlist->Modified();
1343 /* tell everybody else */
1345 send_change (ScaleAmplitudeChanged);
1349 AudioRegion::envelope_changed (Change ignored)
1351 save_state (_("envelope change"));
1352 send_change (EnvelopeChanged);
1356 AudioRegion::suspend_fade_in ()
1358 if (++_fade_in_disabled == 1) {
1359 set_fade_in_active (false);
1364 AudioRegion::resume_fade_in ()
1366 if (_fade_in_disabled && --_fade_in_disabled == 0) {
1367 set_fade_in_active (true);
1372 AudioRegion::suspend_fade_out ()
1374 if (++_fade_out_disabled == 1) {
1375 set_fade_out_active (false);
1380 AudioRegion::resume_fade_out ()
1382 if (_fade_out_disabled && --_fade_out_disabled == 0) {
1383 set_fade_out_active (true);
1389 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)
1391 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (jack_nframes_t) npeaks, (jack_nframes_t) start, (jack_nframes_t) cnt, n_chan,samples_per_unit);
1394 uint32_t region_length_from_c (void *arg)
1397 return ((AudioRegion *) arg)->length();
1400 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1402 return ( (AudioRegion *) arg)->source().available_peaks (zoom_factor) ;