2 Copyright (C) 2000-2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <glibmm/thread.h>
30 #include "pbd/basename.h"
31 #include "pbd/xml++.h"
32 #include "pbd/stacktrace.h"
33 #include "pbd/enumwriter.h"
34 #include "pbd/convert.h"
36 #include "evoral/Curve.hpp"
38 #include "ardour/audioregion.h"
39 #include "ardour/debug.h"
40 #include "ardour/session.h"
41 #include "ardour/gain.h"
42 #include "ardour/dB.h"
43 #include "ardour/playlist.h"
44 #include "ardour/audiofilesource.h"
45 #include "ardour/region_factory.h"
46 #include "ardour/runtime_functions.h"
47 #include "ardour/transient_detector.h"
53 using namespace ARDOUR;
57 namespace Properties {
58 PBD::PropertyDescriptor<bool> envelope_active;
59 PBD::PropertyDescriptor<bool> default_fade_in;
60 PBD::PropertyDescriptor<bool> default_fade_out;
61 PBD::PropertyDescriptor<bool> fade_in_active;
62 PBD::PropertyDescriptor<bool> fade_out_active;
63 PBD::PropertyDescriptor<float> scale_amplitude;
68 AudioRegion::make_property_quarks ()
70 Properties::envelope_active.id = g_quark_from_static_string (X_("envelope-active"));
71 Properties::default_fade_in.id = g_quark_from_static_string (X_("default-fade-in"));
72 Properties::default_fade_out.id = g_quark_from_static_string (X_("default-fade-out"));
73 Properties::fade_in_active.id = g_quark_from_static_string (X_("fade-in-active"));
74 Properties::fade_out_active.id = g_quark_from_static_string (X_("fade-out-active"));
75 Properties::scale_amplitude.id = g_quark_from_static_string (X_("scale-amplitude"));
79 AudioRegion::register_properties ()
81 /* no need to register parent class properties */
83 add_property (_envelope_active);
84 add_property (_default_fade_in);
85 add_property (_default_fade_out);
86 add_property (_fade_in_active);
87 add_property (_fade_out_active);
88 add_property (_scale_amplitude);
91 #define AUDIOREGION_STATE_DEFAULT \
92 _envelope_active (Properties::envelope_active, false) \
93 , _default_fade_in (Properties::default_fade_in, true) \
94 , _default_fade_out (Properties::default_fade_out, true) \
95 , _fade_in_active (Properties::fade_in_active, true) \
96 , _fade_out_active (Properties::fade_out_active, true) \
97 , _scale_amplitude (Properties::scale_amplitude, 0.0)
99 #define AUDIOREGION_COPY_STATE(other) \
100 _envelope_active (other->_envelope_active) \
101 , _default_fade_in (other->_default_fade_in) \
102 , _default_fade_out (other->_default_fade_out) \
103 , _fade_in_active (other->_fade_in_active) \
104 , _fade_out_active (other->_fade_out_active) \
105 , _scale_amplitude (other->_scale_amplitude)
107 /* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
112 register_properties ();
114 set_default_fades ();
115 set_default_envelope ();
117 listen_to_my_curves ();
118 connect_to_analysis_changed ();
119 connect_to_header_position_offset_changed ();
122 /** Constructor for use by derived types only */
123 AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
124 : Region (s, start, len, name, DataType::AUDIO)
125 , AUDIOREGION_STATE_DEFAULT
127 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
128 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
129 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
130 , _fade_in_suspended (0)
131 , _fade_out_suspended (0)
134 assert (_sources.size() == _master_sources.size());
137 /** Basic AudioRegion constructor */
138 AudioRegion::AudioRegion (const SourceList& srcs)
140 , AUDIOREGION_STATE_DEFAULT
141 , _automatable(srcs[0]->session())
142 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
143 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
144 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
145 , _fade_in_suspended (0)
146 , _fade_out_suspended (0)
149 assert (_sources.size() == _master_sources.size());
152 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes64_t offset, bool offset_relative)
153 : Region (other, offset, offset_relative)
154 , AUDIOREGION_COPY_STATE (other)
155 , _automatable (other->session())
156 , _fade_in (new AutomationList (*other->_fade_in))
157 , _fade_out (new AutomationList (*other->_fade_out))
158 /* XXX is this guaranteed to work for all values of offset+offset_relative? */
159 , _envelope (new AutomationList (*other->_envelope, _start, _start + _length))
160 , _fade_in_suspended (0)
161 , _fade_out_suspended (0)
163 /* don't use init here, because we got fade in/out from the other region
165 register_properties ();
166 listen_to_my_curves ();
167 connect_to_analysis_changed ();
168 connect_to_header_position_offset_changed ();
170 assert(_type == DataType::AUDIO);
171 assert (_sources.size() == _master_sources.size());
174 AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
175 : Region (boost::static_pointer_cast<const Region>(other), srcs)
176 , AUDIOREGION_COPY_STATE (other)
177 , _automatable (other->session())
178 , _fade_in (new AutomationList (*other->_fade_in))
179 , _fade_out (new AutomationList (*other->_fade_out))
180 , _envelope (new AutomationList (*other->_envelope))
181 , _fade_in_suspended (0)
182 , _fade_out_suspended (0)
184 /* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
186 register_properties ();
188 listen_to_my_curves ();
189 connect_to_analysis_changed ();
190 connect_to_header_position_offset_changed ();
192 assert (_sources.size() == _master_sources.size());
195 AudioRegion::AudioRegion (SourceList& srcs)
197 , AUDIOREGION_STATE_DEFAULT
198 , _automatable(srcs[0]->session())
199 , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
200 , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
201 , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
202 , _fade_in_suspended (0)
203 , _fade_out_suspended (0)
207 assert(_type == DataType::AUDIO);
208 assert (_sources.size() == _master_sources.size());
211 AudioRegion::~AudioRegion ()
216 AudioRegion::post_set ()
219 _sync_position = _start;
222 /* return to default fades if the existing ones are too long */
224 if (_left_of_split) {
225 if (_fade_in->back()->when >= _length) {
226 set_default_fade_in ();
228 set_default_fade_out ();
229 _left_of_split = false;
232 if (_right_of_split) {
233 if (_fade_out->back()->when >= _length) {
234 set_default_fade_out ();
237 set_default_fade_in ();
238 _right_of_split = false;
243 AudioRegion::connect_to_analysis_changed ()
245 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
246 (*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
251 AudioRegion::connect_to_header_position_offset_changed ()
253 set<boost::shared_ptr<Source> > unique_srcs;
255 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
257 if (unique_srcs.find (*i) == unique_srcs.end ()) {
258 unique_srcs.insert (*i);
259 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
261 afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
268 AudioRegion::listen_to_my_curves ()
270 _envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
271 _fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
272 _fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
276 AudioRegion::set_envelope_active (bool yn)
278 if (envelope_active() != yn) {
279 _envelope_active = yn;
280 send_change (PropertyChange (Properties::envelope_active));
285 AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
287 if (chan_n >= _sources.size()) {
291 if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
294 if (_scale_amplitude != 1.0f) {
295 for (nframes_t n = 0; n < npeaks; ++n) {
296 buf[n].max *= _scale_amplitude;
297 buf[n].min *= _scale_amplitude;
305 AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
307 /* raw read, no fades, no gain, nada */
308 return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, 0, 0, ReadOps (0));
312 AudioRegion::read_with_ops (Sample* buf, framepos_t file_position, framecnt_t cnt, int channel, ReadOps rops) const
314 return _read_at (_sources, _length, buf, 0, 0, file_position, cnt, channel, 0, 0, rops);
318 AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
319 framepos_t file_position, framecnt_t cnt, uint32_t chan_n,
320 framecnt_t read_frames, framecnt_t skip_frames) const
322 /* regular diskstream/butler read complete with fades etc */
323 return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
324 file_position, cnt, chan_n, read_frames, skip_frames, ReadOps (~0));
328 AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
329 framepos_t position, framecnt_t cnt, uint32_t chan_n) const
331 /* do not read gain/scaling/fades and do not count this disk i/o in statistics */
333 return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
334 buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0, ReadOps (0));
338 AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit,
339 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
343 framecnt_t /*read_frames*/,
344 framecnt_t /*skip_frames*/,
347 frameoffset_t internal_offset;
348 frameoffset_t buf_offset;
350 bool raw = (rops == ReadOpsNone);
352 if (muted() && !raw) {
353 return 0; /* read nothing */
356 /* precondition: caller has verified that we cover the desired section */
358 if (position < _position) {
360 buf_offset = _position - position;
363 internal_offset = position - _position;
367 if (internal_offset >= limit) {
368 return 0; /* read nothing */
371 if ((to_read = min (cnt, limit - internal_offset)) == 0) {
372 return 0; /* read nothing */
375 if (opaque() || raw) {
376 /* overwrite whatever is there */
377 mixdown_buffer = buf + buf_offset;
379 mixdown_buffer += buf_offset;
382 if (rops & ReadOpsCount) {
383 _read_data_count = 0;
386 if (chan_n < n_channels()) {
388 boost::shared_ptr<AudioSource> src = audio_source(chan_n);
389 if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
390 return 0; /* "read nothing" */
393 if (rops & ReadOpsCount) {
394 _read_data_count += src->read_data_count();
399 /* track is N-channel, this region has less channels; silence the ones
403 memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
406 if (rops & ReadOpsFades) {
410 if (_fade_in_active && _session.config.get_use_region_fades()) {
412 nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
414 /* see if this read is within the fade in */
416 if (internal_offset < fade_in_length) {
420 fi_limit = min (to_read, fade_in_length - internal_offset);
423 _fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit);
425 for (nframes_t n = 0; n < fi_limit; ++n) {
426 mixdown_buffer[n] *= gain_buffer[n];
433 if (_fade_out_active && _session.config.get_use_region_fades()) {
435 /* see if some part of this read is within the fade out */
437 /* ................. >| REGION
443 limit - fade_out_length
446 ^internal_offset + to_read
448 we need the intersection of [internal_offset,internal_offset+to_read] with
449 [limit - fade_out_length, limit]
454 nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
455 nframes_t fade_interval_start = max(internal_offset, limit-fade_out_length);
456 nframes_t fade_interval_end = min(internal_offset + to_read, limit);
458 if (fade_interval_end > fade_interval_start) {
459 /* (part of the) the fade out is in this buffer */
461 nframes_t fo_limit = fade_interval_end - fade_interval_start;
462 nframes_t curve_offset = fade_interval_start - (limit-fade_out_length);
463 nframes_t fade_offset = fade_interval_start - internal_offset;
465 _fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit);
467 for (nframes_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) {
468 mixdown_buffer[m] *= gain_buffer[n];
475 /* Regular gain curves and scaling */
477 if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
478 _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
480 if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
481 for (nframes_t n = 0; n < to_read; ++n) {
482 mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
485 for (nframes_t n = 0; n < to_read; ++n) {
486 mixdown_buffer[n] *= gain_buffer[n];
489 } else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
491 // XXX this should be using what in 2.0 would have been:
492 // Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
494 for (nframes_t n = 0; n < to_read; ++n) {
495 mixdown_buffer[n] *= _scale_amplitude;
501 /* gack. the things we do for users.
506 for (nframes_t n = 0; n < to_read; ++n) {
507 buf[n] += mixdown_buffer[n];
515 AudioRegion::state (bool full)
517 XMLNode& node (Region::state (full));
521 LocaleGuard lg (X_("POSIX"));
524 // XXX these should move into Region
526 for (uint32_t n=0; n < _sources.size(); ++n) {
527 snprintf (buf2, sizeof(buf2), "source-%d", n);
528 _sources[n]->id().print (buf, sizeof (buf));
529 node.add_property (buf2, buf);
532 for (uint32_t n=0; n < _master_sources.size(); ++n) {
533 snprintf (buf2, sizeof(buf2), "master-source-%d", n);
534 _master_sources[n]->id().print (buf, sizeof (buf));
535 node.add_property (buf2, buf);
538 snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
539 node.add_property ("channels", buf);
542 Stateful::add_properties (node);
545 child = node.add_child ("Envelope");
548 bool default_env = false;
550 // If there are only two points, the points are in the start of the region and the end of the region
551 // so, if they are both at 1.0f, that means the default region.
553 if (_envelope->size() == 2 &&
554 _envelope->front()->value == 1.0f &&
555 _envelope->back()->value==1.0f) {
556 if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
562 child->add_property ("default", "yes");
564 child->add_child_nocopy (_envelope->get_state ());
568 child->add_property ("default", "yes");
571 if (full && _extra_xml) {
572 node.add_child_copy (*_extra_xml);
579 AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
581 const XMLNodeList& nlist = node.children();
582 const XMLProperty *prop;
583 LocaleGuard lg (X_("POSIX"));
584 boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
589 the_playlist->freeze ();
593 /* this will set all our State members and stuff controlled by the Region.
594 It should NOT send any changed signals - that is our responsibility.
597 Region::_set_state (node, version, what_changed, false);
599 if ((prop = node.property ("scale-gain")) != 0) {
600 float a = atof (prop->value().c_str());
601 if (a != _scale_amplitude) {
602 _scale_amplitude = a;
603 what_changed.add (Properties::scale_amplitude);
607 /* Now find envelope description and other related child items */
609 _envelope->freeze ();
611 for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
617 if (child->name() == "Envelope") {
621 if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
622 set_default_envelope ();
625 _envelope->set_max_xval (_length);
626 _envelope->truncate_end (_length);
629 } else if (child->name() == "FadeIn") {
633 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
634 set_default_fade_in ();
636 XMLNode* grandchild = child->child ("AutomationList");
638 _fade_in->set_state (*grandchild, version);
642 if ((prop = child->property ("active")) != 0) {
643 if (string_is_affirmative (prop->value())) {
644 set_fade_in_active (true);
646 set_fade_in_active (false);
650 } else if (child->name() == "FadeOut") {
654 if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
655 set_default_fade_out ();
657 XMLNode* grandchild = child->child ("AutomationList");
659 _fade_out->set_state (*grandchild, version);
663 if ((prop = child->property ("active")) != 0) {
664 if (string_is_affirmative (prop->value())) {
665 set_fade_out_active (true);
667 set_fade_out_active (false);
678 send_change (what_changed);
682 the_playlist->thaw ();
689 AudioRegion::set_property (const PropertyBase& prop)
691 DEBUG_TRACE (DEBUG::Properties, string_compose ("audio region %1 set property %2\n", _name.val(), prop.property_name()));
693 if (prop == Properties::envelope_active.id) {
694 bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
695 if (val != _envelope_active) {
696 _envelope_active = val;
699 } else if (prop == Properties::default_fade_in.id) {
700 bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
701 if (val != _default_fade_in) {
702 _default_fade_in = val;
705 } else if (prop == Properties::default_fade_out.id) {
706 bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
707 if (val != _default_fade_out) {
708 _default_fade_out = val;
711 } else if (prop == Properties::fade_in_active.id) {
712 bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
713 if (val != _fade_in_active) {
714 _fade_in_active = val;
717 } else if (prop == Properties::fade_out_active.id) {
718 bool val = dynamic_cast<const PropertyTemplate<bool>*>(&prop)->val();
719 if (val != _fade_out_active) {
720 _fade_out_active = val;
723 } else if (prop == Properties::scale_amplitude.id) {
724 gain_t val = dynamic_cast<const PropertyTemplate<gain_t>*>(&prop)->val();
725 if (val != _scale_amplitude) {
726 _scale_amplitude = val;
730 return Region::set_property (prop);
737 AudioRegion::set_state (const XMLNode& node, int version)
739 PropertyChange what_changed;
740 return _set_state (node, version, what_changed, true);
744 AudioRegion::set_fade_in_shape (FadeShape shape)
746 set_fade_in (shape, (nframes_t) _fade_in->back()->when);
750 AudioRegion::set_fade_out_shape (FadeShape shape)
752 set_fade_out (shape, (nframes_t) _fade_out->back()->when);
756 AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
762 send_change (PropertyChange (Properties::fade_in));
766 AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
773 _fade_in->fast_simple_add (0.0, 0.0);
774 _fade_in->fast_simple_add (len, 1.0);
778 _fade_in->fast_simple_add (0, 0);
779 _fade_in->fast_simple_add (len * 0.389401, 0.0333333);
780 _fade_in->fast_simple_add (len * 0.629032, 0.0861111);
781 _fade_in->fast_simple_add (len * 0.829493, 0.233333);
782 _fade_in->fast_simple_add (len * 0.9447, 0.483333);
783 _fade_in->fast_simple_add (len * 0.976959, 0.697222);
784 _fade_in->fast_simple_add (len, 1);
788 _fade_in->fast_simple_add (0, 0);
789 _fade_in->fast_simple_add (len * 0.0207373, 0.197222);
790 _fade_in->fast_simple_add (len * 0.0645161, 0.525);
791 _fade_in->fast_simple_add (len * 0.152074, 0.802778);
792 _fade_in->fast_simple_add (len * 0.276498, 0.919444);
793 _fade_in->fast_simple_add (len * 0.481567, 0.980556);
794 _fade_in->fast_simple_add (len * 0.767281, 1);
795 _fade_in->fast_simple_add (len, 1);
799 _fade_in->fast_simple_add (0, 0);
800 _fade_in->fast_simple_add (len * 0.0737327, 0.308333);
801 _fade_in->fast_simple_add (len * 0.246544, 0.658333);
802 _fade_in->fast_simple_add (len * 0.470046, 0.886111);
803 _fade_in->fast_simple_add (len * 0.652074, 0.972222);
804 _fade_in->fast_simple_add (len * 0.771889, 0.988889);
805 _fade_in->fast_simple_add (len, 1);
809 _fade_in->fast_simple_add (0, 0);
810 _fade_in->fast_simple_add (len * 0.304147, 0.0694444);
811 _fade_in->fast_simple_add (len * 0.529954, 0.152778);
812 _fade_in->fast_simple_add (len * 0.725806, 0.333333);
813 _fade_in->fast_simple_add (len * 0.847926, 0.558333);
814 _fade_in->fast_simple_add (len * 0.919355, 0.730556);
815 _fade_in->fast_simple_add (len, 1);
823 AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
825 _fade_out->freeze ();
829 send_change (PropertyChange (Properties::fade_in));
833 AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
835 _fade_out->freeze ();
840 _fade_out->fast_simple_add (len * 0, 1);
841 _fade_out->fast_simple_add (len * 0.023041, 0.697222);
842 _fade_out->fast_simple_add (len * 0.0553, 0.483333);
843 _fade_out->fast_simple_add (len * 0.170507, 0.233333);
844 _fade_out->fast_simple_add (len * 0.370968, 0.0861111);
845 _fade_out->fast_simple_add (len * 0.610599, 0.0333333);
846 _fade_out->fast_simple_add (len * 1, 0);
850 _fade_out->fast_simple_add (len * 0, 1);
851 _fade_out->fast_simple_add (len * 0.228111, 0.988889);
852 _fade_out->fast_simple_add (len * 0.347926, 0.972222);
853 _fade_out->fast_simple_add (len * 0.529954, 0.886111);
854 _fade_out->fast_simple_add (len * 0.753456, 0.658333);
855 _fade_out->fast_simple_add (len * 0.9262673, 0.308333);
856 _fade_out->fast_simple_add (len * 1, 0);
860 _fade_out->fast_simple_add (len * 0, 1);
861 _fade_out->fast_simple_add (len * 0.305556, 1);
862 _fade_out->fast_simple_add (len * 0.548611, 0.991736);
863 _fade_out->fast_simple_add (len * 0.759259, 0.931129);
864 _fade_out->fast_simple_add (len * 0.918981, 0.68595);
865 _fade_out->fast_simple_add (len * 0.976852, 0.22865);
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 * 0.080645, 0.730556);
872 _fade_out->fast_simple_add (len * 0.277778, 0.289256);
873 _fade_out->fast_simple_add (len * 0.470046, 0.152778);
874 _fade_out->fast_simple_add (len * 0.695853, 0.0694444);
875 _fade_out->fast_simple_add (len * 1, 0);
879 _fade_out->fast_simple_add (len * 0, 1);
880 _fade_out->fast_simple_add (len * 1, 0);
888 AudioRegion::set_fade_in_length (framecnt_t len)
894 bool changed = _fade_in->extend_to (len);
897 _default_fade_in = false;
898 send_change (PropertyChange (Properties::fade_in));
903 AudioRegion::set_fade_out_length (framecnt_t len)
909 bool changed = _fade_out->extend_to (len);
912 _default_fade_out = false;
913 send_change (PropertyChange (Properties::fade_out));
918 AudioRegion::set_fade_in_active (bool yn)
920 if (yn == _fade_in_active) {
924 _fade_in_active = yn;
925 send_change (PropertyChange (Properties::fade_in_active));
929 AudioRegion::set_fade_out_active (bool yn)
931 if (yn == _fade_out_active) {
934 _fade_out_active = yn;
935 send_change (PropertyChange (Properties::fade_out_active));
939 AudioRegion::fade_in_is_default () const
941 return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
945 AudioRegion::fade_out_is_default () const
947 return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
951 AudioRegion::set_default_fade_in ()
953 _fade_in_suspended = 0;
954 set_fade_in (Linear, 64);
958 AudioRegion::set_default_fade_out ()
960 _fade_out_suspended = 0;
961 set_fade_out (Linear, 64);
965 AudioRegion::set_default_fades ()
967 set_default_fade_in ();
968 set_default_fade_out ();
972 AudioRegion::set_default_envelope ()
974 _envelope->freeze ();
976 _envelope->fast_simple_add (0, 1.0f);
977 _envelope->fast_simple_add (_length, 1.0f);
982 AudioRegion::recompute_at_end ()
984 /* our length has changed. recompute a new final point by interpolating
985 based on the the existing curve.
988 _envelope->freeze ();
989 _envelope->truncate_end (_length);
990 _envelope->set_max_xval (_length);
993 if (_fade_in->back()->when > _length) {
994 _fade_in->extend_to (_length);
995 send_change (PropertyChange (Properties::fade_in));
998 if (_fade_out->back()->when > _length) {
999 _fade_out->extend_to (_length);
1000 send_change (PropertyChange (Properties::fade_out));
1005 AudioRegion::recompute_at_start ()
1007 /* as above, but the shift was from the front */
1009 _envelope->truncate_start (_length);
1011 if (_fade_in->back()->when > _length) {
1012 _fade_in->extend_to (_length);
1013 send_change (PropertyChange (Properties::fade_in));
1016 if (_fade_out->back()->when > _length) {
1017 _fade_out->extend_to (_length);
1018 send_change (PropertyChange (Properties::fade_out));
1023 AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
1029 if (_sources.size() < 2) {
1033 for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
1035 srcs.push_back (*i);
1039 if (_sources.size() == 2) {
1047 new_name += ('0' + n + 1);
1050 /* create a copy with just one source. prevent if from being thought of as
1051 "whole file" even if it covers the entire source file(s).
1056 plist.add (Properties::start, _start.val());
1057 plist.add (Properties::length, _length.val());
1058 plist.add (Properties::name, new_name);
1059 plist.add (Properties::layer, _layer.val());
1061 v.push_back(RegionFactory::create (srcs, plist));
1062 v.back()->set_whole_file (false);
1071 AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
1073 return audio_source()->read (buf, pos, cnt, channel);
1077 AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
1080 // const nframes_t blocksize = 4096;
1081 // nframes_t to_read;
1084 // spec.channels = _sources.size();
1086 // if (spec.prepare (blocksize, session.frame_rate())) {
1091 // spec.total_frames = _length;
1093 // while (spec.pos < _length && !spec.stop) {
1096 // /* step 1: interleave */
1098 // to_read = min (_length - spec.pos, blocksize);
1100 // if (spec.channels == 1) {
1102 // if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
1108 // Sample buf[blocksize];
1110 // for (uint32_t chan = 0; chan < spec.channels; ++chan) {
1112 // if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
1116 // for (nframes_t x = 0; x < to_read; ++x) {
1117 // spec.dataF[chan+(x*spec.channels)] = buf[x];
1122 // if (spec.process (to_read)) {
1126 // spec.pos += to_read;
1127 // spec.progress = (double) spec.pos /_length;
1134 // spec.running = false;
1135 // spec.status = status;
1143 AudioRegion::set_scale_amplitude (gain_t g)
1145 boost::shared_ptr<Playlist> pl (playlist());
1147 _scale_amplitude = g;
1149 /* tell the diskstream we're in */
1152 pl->ContentsChanged();
1155 /* tell everybody else */
1157 send_change (PropertyChange (Properties::scale_amplitude));
1161 AudioRegion::normalize_to (float target_dB)
1163 const framecnt_t blocksize = 64 * 1024;
1164 Sample buf[blocksize];
1169 gain_t target = dB_to_coefficient (target_dB);
1171 if (target == 1.0f) {
1172 /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
1173 that we may have clipped.
1175 target -= FLT_EPSILON;
1179 fend = _start + _length;
1181 /* first pass: find max amplitude */
1183 while (fpos < fend) {
1187 to_read = min (fend - fpos, blocksize);
1189 for (n = 0; n < n_channels(); ++n) {
1193 if (read_raw_internal (buf, fpos, to_read, 0) != to_read) {
1197 maxamp = compute_peak (buf, to_read, maxamp);
1203 if (maxamp == 0.0f) {
1204 /* don't even try */
1208 if (maxamp == target) {
1209 /* we can't do anything useful */
1213 /* compute scale factor */
1215 _scale_amplitude = target/maxamp;
1217 /* tell the diskstream we're in */
1219 boost::shared_ptr<Playlist> pl (playlist());
1222 pl->ContentsChanged();
1225 /* tell everybody else */
1227 send_change (PropertyChange (Properties::scale_amplitude));
1231 AudioRegion::fade_in_changed ()
1233 send_change (PropertyChange (Properties::fade_in));
1237 AudioRegion::fade_out_changed ()
1239 send_change (PropertyChange (Properties::fade_out));
1243 AudioRegion::envelope_changed ()
1245 send_change (PropertyChange (Properties::envelope));
1249 AudioRegion::suspend_fade_in ()
1251 if (++_fade_in_suspended == 1) {
1252 if (fade_in_is_default()) {
1253 set_fade_in_active (false);
1259 AudioRegion::resume_fade_in ()
1261 if (--_fade_in_suspended == 0 && _fade_in_suspended) {
1262 set_fade_in_active (true);
1267 AudioRegion::suspend_fade_out ()
1269 if (++_fade_out_suspended == 1) {
1270 if (fade_out_is_default()) {
1271 set_fade_out_active (false);
1277 AudioRegion::resume_fade_out ()
1279 if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
1280 set_fade_out_active (true);
1285 AudioRegion::speed_mismatch (float sr) const
1287 if (_sources.empty()) {
1288 /* impossible, but ... */
1292 float fsr = audio_source()->sample_rate();
1298 AudioRegion::source_offset_changed ()
1300 /* XXX this fixes a crash that should not occur. It does occur
1301 becauses regions are not being deleted when a session
1302 is unloaded. That bug must be fixed.
1305 if (_sources.empty()) {
1309 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
1311 if (afs && afs->destructive()) {
1312 // set_start (source()->natural_position(), this);
1313 set_position (source()->natural_position(), this);
1317 boost::shared_ptr<AudioSource>
1318 AudioRegion::audio_source (uint32_t n) const
1320 // Guaranteed to succeed (use a static cast for speed?)
1321 return boost::dynamic_pointer_cast<AudioSource>(source(n));
1325 AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
1327 boost::shared_ptr<Playlist> pl = playlist();
1333 if (_valid_transients && !force_new) {
1334 results = _transients;
1338 SourceList::iterator s;
1340 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1341 if (!(*s)->has_been_analysed()) {
1342 cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
1347 if (s == _sources.end()) {
1348 /* all sources are analyzed, merge data from each one */
1350 for (s = _sources.begin() ; s != _sources.end(); ++s) {
1352 /* find the set of transients within the bounds of this region */
1354 AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
1355 (*s)->transients.end(),
1358 AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
1359 (*s)->transients.end(),
1364 results.insert (results.end(), low, high);
1367 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1369 /* translate all transients to current position */
1371 for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
1376 _transients = results;
1377 _valid_transients = true;
1382 /* no existing/complete transient info */
1384 if (!Config->get_auto_analyse_audio()) {
1385 pl->session().Dialog (_("\
1386 You have requested an operation that requires audio analysis.\n\n\
1387 You currently have \"auto-analyse-audio\" disabled, which means\n\
1388 that transient data must be generated every time it is required.\n\n\
1389 If you are doing work that will require transient data on a\n\
1390 regular basis, you should probably enable \"auto-analyse-audio\"\n\
1391 then quit ardour and restart."));
1394 TransientDetector t (pl->session().frame_rate());
1395 bool existing_results = !results.empty();
1397 _transients.clear ();
1398 _valid_transients = false;
1400 for (uint32_t i = 0; i < n_channels(); ++i) {
1402 AnalysisFeatureList these_results;
1406 if (t.run ("", this, i, these_results)) {
1410 /* translate all transients to give absolute position */
1412 for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
1418 _transients.insert (_transients.end(), these_results.begin(), these_results.end());
1421 if (!results.empty()) {
1422 if (existing_results) {
1424 /* merge our transients into the existing ones, then clean up
1428 results.insert (results.end(), _transients.begin(), _transients.end());
1429 TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
1432 /* make sure ours are clean too */
1434 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1438 TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
1439 results = _transients;
1442 _valid_transients = true;
1447 /** Find areas of `silence' within a region.
1449 * @param threshold Threshold below which signal is considered silence (as a sample value)
1450 * @param min_length Minimum length of silent period to be reported.
1451 * @return Silent periods; first of pair is the offset within the region, second is the length of the period
1454 std::list<std::pair<frameoffset_t, framecnt_t> >
1455 AudioRegion::find_silence (Sample threshold, framecnt_t min_length) const
1457 framecnt_t const block_size = 64 * 1024;
1458 Sample loudest[block_size];
1459 Sample buf[block_size];
1461 framepos_t pos = _start;
1462 framepos_t const end = _start + _length - 1;
1464 std::list<std::pair<frameoffset_t, framecnt_t> > silent_periods;
1466 bool in_silence = false;
1467 frameoffset_t silence_start = 0;
1472 /* fill `loudest' with the loudest absolute sample at each instant, across all channels */
1473 memset (loudest, 0, sizeof (Sample) * block_size);
1474 for (uint32_t n = 0; n < n_channels(); ++n) {
1476 read_raw_internal (buf, pos, block_size, n);
1477 for (framecnt_t i = 0; i < block_size; ++i) {
1478 loudest[i] = max (loudest[i], abs (buf[i]));
1482 /* now look for silence */
1483 for (framecnt_t i = 0; i < block_size; ++i) {
1484 silence = abs (loudest[i]) < threshold;
1485 if (silence && !in_silence) {
1486 /* non-silence to silence */
1488 silence_start = pos + i;
1489 } else if (!silence && in_silence) {
1490 /* silence to non-silence */
1492 if (pos + i - 1 - silence_start >= min_length) {
1493 silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
1501 if (in_silence && end - 1 - silence_start >= min_length) {
1502 /* last block was silent, so finish off the last period */
1503 silent_periods.push_back (std::make_pair (silence_start, end));
1506 return silent_periods;
1513 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)
1515 return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
1518 uint32_t region_length_from_c (void *arg)
1521 return ((AudioRegion *) arg)->length();
1524 uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
1526 return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;