2 Copyright (C) 2004 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.
20 #define __STDC_FORMAT_MACROS 1
35 #include <pbd/error.h>
36 #include <pbd/failed_constructor.h>
37 #include <pbd/xml++.h>
38 #include <pbd/enumwriter.h>
40 #include <ardour/session.h>
41 #include <ardour/panner.h>
42 #include <ardour/utils.h>
44 #include <ardour/runtime_functions.h>
45 #include <ardour/buffer_set.h>
49 #include <pbd/mathfix.h>
52 using namespace ARDOUR;
55 float Panner::current_automation_version_number = 1.0;
57 string EqualPowerStereoPanner::name = "Equal Power Stereo";
58 string Multi2dPanner::name = "Multiple (2D)";
60 /* this is a default mapper of control values to a pan position
61 others can be imagined.
64 static pan_t direct_control_to_pan (double fract) {
68 static double direct_pan_to_control (pan_t val) {
72 StreamPanner::StreamPanner (Panner& p, Parameter param)
74 , _control (new PanControllable(p.session(), X_("panner"), *this, param))
76 assert(param.type() != NullAutomation);
80 parent.session().add_controllable (_control);
87 StreamPanner::~StreamPanner ()
92 StreamPanner::PanControllable::set_value (float val)
94 panner.set_position (direct_control_to_pan (val));
98 StreamPanner::PanControllable::get_value (void) const
101 panner.get_effective_position (xpos);
102 return direct_pan_to_control (xpos);
106 StreamPanner::set_muted (bool yn)
115 StreamPanner::set_position (float xpos, bool link_call)
117 if (!link_call && parent.linked()) {
118 parent.set_position (xpos, *this);
125 _control->Changed ();
130 StreamPanner::set_position (float xpos, float ypos, bool link_call)
132 if (!link_call && parent.linked()) {
133 parent.set_position (xpos, ypos, *this);
136 if (x != xpos || y != ypos) {
146 StreamPanner::set_position (float xpos, float ypos, float zpos, bool link_call)
148 if (!link_call && parent.linked()) {
149 parent.set_position (xpos, ypos, zpos, *this);
152 if (x != xpos || y != ypos || z != zpos) {
162 StreamPanner::set_state (const XMLNode& node)
164 const XMLProperty* prop;
165 XMLNodeConstIterator iter;
167 if ((prop = node.property (X_("muted")))) {
168 set_muted (prop->value() == "yes");
175 StreamPanner::add_state (XMLNode& node)
177 node.add_property (X_("muted"), (muted() ? "yes" : "no"));
180 /*---------------------------------------------------------------------- */
182 BaseStereoPanner::BaseStereoPanner (Panner& p, Parameter param)
183 : StreamPanner (p, param)
187 BaseStereoPanner::~BaseStereoPanner ()
192 BaseStereoPanner::load (istream& in, string path, uint32_t& linecnt)
195 LocaleGuard lg (X_("POSIX"));
197 _control->list()->clear ();
199 while (in.getline (line, sizeof (line), '\n')) {
205 if (strcmp (line, "end") == 0) {
209 if (sscanf (line, "%" PRIu32 " %lf", &when, &value) != 2) {
210 warning << string_compose(_("badly formatted pan automation event record at line %1 of %2 (ignored) [%3]"), linecnt, path, line) << endmsg;
214 _control->list()->fast_simple_add (when, value);
217 /* now that we are done loading */
219 ((AutomationList*)_control->list().get())->StateChanged ();
225 BaseStereoPanner::distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
227 assert(obufs.count().n_audio() == 2);
237 Sample* const src = srcbuf.data();
241 dst = obufs.get_audio(0).data();
243 if (fabsf ((delta = (left - desired_left))) > 0.002) { // about 1 degree of arc
245 /* interpolate over 64 frames or nframes, whichever is smaller */
247 nframes_t limit = min ((nframes_t)64, nframes);
250 delta = -(delta / (float) (limit));
252 for (n = 0; n < limit; n++) {
253 left_interp = left_interp + delta;
254 left = left_interp + 0.9 * (left - left_interp);
255 dst[n] += src[n] * left * gain_coeff;
258 pan = left * gain_coeff;
260 mix_buffers_with_gain (dst+n,src+n,nframes-n,pan);
267 if ((pan = (left * gain_coeff)) != 1.0f) {
271 mix_buffers_with_gain(dst,src,nframes,pan);
273 /* mark that we wrote into the buffer */
281 mix_buffers_no_gain(dst,src,nframes);
283 /* mark that we wrote into the buffer */
291 dst = obufs.get_audio(1).data();
293 if (fabsf ((delta = (right - desired_right))) > 0.002) { // about 1 degree of arc
295 /* interpolate over 64 frames or nframes, whichever is smaller */
297 nframes_t limit = min ((nframes_t)64, nframes);
300 delta = -(delta / (float) (limit));
302 for (n = 0; n < limit; n++) {
303 right_interp = right_interp + delta;
304 right = right_interp + 0.9 * (right - right_interp);
305 dst[n] += src[n] * right * gain_coeff;
308 pan = right * gain_coeff;
310 mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
312 /* XXX it would be nice to mark the buffer as written to */
316 right = desired_right;
317 right_interp = right;
319 if ((pan = (right * gain_coeff)) != 1.0f) {
323 mix_buffers_with_gain(dst,src,nframes,pan);
325 /* XXX it would be nice to mark the buffer as written to */
330 mix_buffers_no_gain(dst,src,nframes);
332 /* XXX it would be nice to mark the buffer as written to */
337 /*---------------------------------------------------------------------- */
339 EqualPowerStereoPanner::EqualPowerStereoPanner (Panner& p, Parameter param)
340 : BaseStereoPanner (p, param)
345 right = desired_right;
347 right_interp = right;
350 EqualPowerStereoPanner::~EqualPowerStereoPanner ()
355 EqualPowerStereoPanner::update ()
357 /* it would be very nice to split this out into a virtual function
358 that can be accessed from BaseStereoPanner and used in distribute_automated().
360 but the place where its used in distribute_automated() is a tight inner loop,
361 and making "nframes" virtual function calls to compute values is an absurd
365 /* x == 0 => hard left
370 float panL = 1 - panR;
372 const float pan_law_attenuation = -3.0f;
373 const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
375 desired_left = panL * (scale * panL + 1.0f - scale);
376 desired_right = panR * (scale * panR + 1.0f - scale);
379 _control->set_value(x);
383 EqualPowerStereoPanner::distribute_automated (AudioBuffer& srcbuf, BufferSet& obufs,
384 nframes_t start, nframes_t end, nframes_t nframes,
387 assert(obufs.count().n_audio() == 2);
391 Sample* const src = srcbuf.data();
393 /* fetch positional data */
395 if (!_control->list()->curve().rt_safe_get_vector (start, end, buffers[0], nframes)) {
398 distribute (srcbuf, obufs, 1.0, nframes);
403 /* store effective pan position. do this even if we are muted */
406 effective_x = buffers[0][nframes-1];
407 _control->set_value(effective_x); // signal, update UI
414 /* apply pan law to convert positional data into pan coefficients for
418 const float pan_law_attenuation = -3.0f;
419 const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
421 for (nframes_t n = 0; n < nframes; ++n) {
423 float panR = buffers[0][n];
424 float panL = 1 - panR;
426 buffers[0][n] = panL * (scale * panL + 1.0f - scale);
427 buffers[1][n] = panR * (scale * panR + 1.0f - scale);
432 dst = obufs.get_audio(0).data();
435 for (nframes_t n = 0; n < nframes; ++n) {
436 dst[n] += src[n] * pbuf[n];
439 /* XXX it would be nice to mark the buffer as written to */
443 dst = obufs.get_audio(1).data();
446 for (nframes_t n = 0; n < nframes; ++n) {
447 dst[n] += src[n] * pbuf[n];
450 /* XXX it would be nice to mark the buffer as written to */
454 EqualPowerStereoPanner::factory (Panner& parent, Parameter param)
456 return new EqualPowerStereoPanner (parent, param);
460 EqualPowerStereoPanner::get_state (void)
466 EqualPowerStereoPanner::state (bool full_state)
468 XMLNode* root = new XMLNode ("StreamPanner");
470 LocaleGuard lg (X_("POSIX"));
472 snprintf (buf, sizeof (buf), "%.12g", x);
473 root->add_property (X_("x"), buf);
474 root->add_property (X_("type"), EqualPowerStereoPanner::name);
476 XMLNode* autonode = new XMLNode (X_("Automation"));
477 autonode->add_child_nocopy (((AutomationList*)_control->list().get())->state (full_state));
478 root->add_child_nocopy (*autonode);
480 StreamPanner::add_state (*root);
482 root->add_child_nocopy (_control->get_state ());
488 EqualPowerStereoPanner::set_state (const XMLNode& node)
490 const XMLProperty* prop;
492 LocaleGuard lg (X_("POSIX"));
494 if ((prop = node.property (X_("x")))) {
495 pos = atof (prop->value().c_str());
496 set_position (pos, true);
499 StreamPanner::set_state (node);
501 for (XMLNodeConstIterator iter = node.children().begin(); iter != node.children().end(); ++iter) {
503 if ((*iter)->name() == X_("controllable")) {
504 if ((prop = (*iter)->property("name")) != 0 && prop->value() == "panner") {
505 _control->set_state (**iter);
508 } else if ((*iter)->name() == X_("Automation")) {
510 _control->alist()->set_state (*((*iter)->children().front()));
512 if (_control->alist()->automation_state() != Off) {
513 set_position (_control->list()->eval (parent.session().transport_frame()));
521 /*----------------------------------------------------------------------*/
523 Multi2dPanner::Multi2dPanner (Panner& p, Parameter param)
524 : StreamPanner (p, param)
529 Multi2dPanner::~Multi2dPanner ()
534 Multi2dPanner::update ()
536 static const float BIAS = FLT_MIN;
538 uint32_t nouts = parent.outputs.size();
545 for (i = 0; i < nouts; i++) {
546 dsq[i] = ((x - parent.outputs[i].x) * (x - parent.outputs[i].x) + (y - parent.outputs[i].y) * (y - parent.outputs[i].y) + BIAS);
550 f += dsq[i] * dsq[i];
553 // terrible hack to support OSX < 10.3.9 builds
554 fr = (float) (1.0 / sqrt((double)f));
558 for (i = 0; i < nouts; ++i) {
559 parent.outputs[i].desired_pan = 1.0f - (dsq[i] * fr);
563 _control->set_value(x);
567 Multi2dPanner::distribute (AudioBuffer& srcbuf, BufferSet& obufs, gain_t gain_coeff, nframes_t nframes)
571 vector<Panner::Output>::iterator o;
578 Sample* const src = srcbuf.data();
581 for (n = 0, o = parent.outputs.begin(); o != parent.outputs.end(); ++o, ++n) {
583 dst = obufs.get_audio(n).data();
586 if (fabsf ((delta = (left_interp - desired_left))) > 0.002) { // about 1 degree of arc
588 /* interpolate over 64 frames or nframes, whichever is smaller */
590 nframes_t limit = min ((nframes_t)64, nframes);
593 delta = -(delta / (float) (limit));
595 for (n = 0; n < limit; n++) {
596 left_interp = left_interp + delta;
597 left = left_interp + 0.9 * (left - left_interp);
598 dst[n] += src[n] * left * gain_coeff;
601 pan = left * gain_coeff;
602 mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
607 pan = (*o).desired_pan;
609 if ((pan *= gain_coeff) != 1.0f) {
612 mix_buffers_with_gain(dst,src,nframes,pan);
615 mix_buffers_no_gain(dst,src,nframes);
627 Multi2dPanner::distribute_automated (AudioBuffer& src, BufferSet& obufs,
628 nframes_t start, nframes_t end, nframes_t nframes,
641 Multi2dPanner::factory (Panner& p, Parameter param)
643 return new Multi2dPanner (p, param);
647 Multi2dPanner::load (istream& in, string path, uint32_t& linecnt)
653 Multi2dPanner::get_state (void)
659 Multi2dPanner::state (bool full_state)
661 XMLNode* root = new XMLNode ("StreamPanner");
663 LocaleGuard lg (X_("POSIX"));
665 snprintf (buf, sizeof (buf), "%.12g", x);
666 root->add_property (X_("x"), buf);
667 snprintf (buf, sizeof (buf), "%.12g", y);
668 root->add_property (X_("y"), buf);
669 root->add_property (X_("type"), Multi2dPanner::name);
671 /* XXX no meaningful automation yet */
677 Multi2dPanner::set_state (const XMLNode& node)
679 const XMLProperty* prop;
681 LocaleGuard lg (X_("POSIX"));
686 if ((prop = node.property (X_("x")))) {
687 newx = atof (prop->value().c_str());
690 if ((prop = node.property (X_("y")))) {
691 newy = atof (prop->value().c_str());
694 if (x < 0 || y < 0) {
695 error << _("badly-formed positional data for Multi2dPanner - ignored")
700 set_position (newx, newy);
704 /*---------------------------------------------------------------------- */
706 Panner::Panner (string name, Session& s)
712 _link_direction = SameDirection;
721 Panner::set_linked (bool yn)
725 _session.set_dirty ();
726 LinkStateChanged (); /* EMIT SIGNAL */
731 Panner::set_link_direction (LinkDirection ld)
733 if (ld != _link_direction) {
734 _link_direction = ld;
735 _session.set_dirty ();
736 LinkStateChanged (); /* EMIT SIGNAL */
741 Panner::set_bypassed (bool yn)
743 if (yn != _bypassed) {
751 Panner::reset (uint32_t nouts, uint32_t npans)
754 bool changed = false;
756 if (nouts < 2 || (nouts == outputs.size() && npans == size())) {
779 fatal << _("programming error:")
780 << X_("Panner::reset() called with a single output")
787 outputs.push_back (Output (0, 0));
788 outputs.push_back (Output (1.0, 0));
790 for (n = 0; n < npans; ++n) {
791 push_back (new EqualPowerStereoPanner (*this, Parameter(PanAutomation, n)));
796 outputs.push_back (Output (0.5, 0));
797 outputs.push_back (Output (0, 1.0));
798 outputs.push_back (Output (1.0, 1.0));
800 for (n = 0; n < npans; ++n) {
801 push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
807 outputs.push_back (Output (0, 0));
808 outputs.push_back (Output (1.0, 0));
809 outputs.push_back (Output (1.0, 1.0));
810 outputs.push_back (Output (0, 1.0));
812 for (n = 0; n < npans; ++n) {
813 push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
818 case 5: //square+offcenter center
819 outputs.push_back (Output (0, 0));
820 outputs.push_back (Output (1.0, 0));
821 outputs.push_back (Output (1.0, 1.0));
822 outputs.push_back (Output (0, 1.0));
823 outputs.push_back (Output (0.5, 0.75));
825 for (n = 0; n < npans; ++n) {
826 push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
832 /* XXX horrible placement. FIXME */
833 for (n = 0; n < nouts; ++n) {
834 outputs.push_back (Output (0.1 * n, 0.1 * n));
837 for (n = 0; n < npans; ++n) {
838 push_back (new Multi2dPanner (*this, Parameter(PanAutomation, n)));
844 for (iterator x = begin(); x != end(); ++x) {
848 /* force hard left/right panning in a common case: 2in/2out
851 if (npans == 2 && outputs.size() == 2) {
853 /* Do this only if we changed configuration, or our configuration
854 appears to be the default set up (center).
860 front()->get_position (left);
861 back()->get_position (right);
863 if (changed || ((left == 0.5) && (right == 0.5))) {
865 front()->set_position (0.0);
866 front()->pan_control()->list()->reset_default (0.0);
868 back()->set_position (1.0);
869 back()->pan_control()->list()->reset_default (1.0);
876 Changed (); /* EMIT SIGNAL */
883 Panner::remove (uint32_t which)
885 vector<StreamPanner*>::iterator i;
886 for (i = begin(); i != end() && which; ++i, --which);
897 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
901 vector<StreamPanner*>::clear ();
905 Panner::set_automation_style (AutoStyle style)
907 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
908 ((AutomationList*)(*i)->pan_control()->list().get())->set_automation_style (style);
910 _session.set_dirty ();
914 Panner::set_automation_state (AutoState state)
916 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
917 ((AutomationList*)(*i)->pan_control()->list().get())->set_automation_state (state);
919 _session.set_dirty ();
923 Panner::automation_state () const
926 return ((AutomationList*)front()->pan_control()->list().get())->automation_state ();
933 Panner::automation_style () const
936 return ((AutomationList*)front()->pan_control()->list().get())->automation_style ();
943 Panner::transport_stopped (nframes_t frame)
945 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
946 ((AutomationList*)(*i)->pan_control()->list().get())->reposition_for_rt_add (frame);
951 Panner::snapshot (nframes_t now)
953 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
954 AutomationList* list = ((AutomationList*)(*i)->pan_control()->list().get());
955 if (list->automation_write())
956 list->rt_add(now, (*i)->pan_control()->get_value());
961 Panner::clear_automation ()
963 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
964 (*i)->pan_control()->list()->clear ();
966 _session.set_dirty ();
972 StreamPanner* (*factory)(Panner&, Parameter);
975 PanPlugins pan_plugins[] = {
976 { EqualPowerStereoPanner::name, 2, EqualPowerStereoPanner::factory },
977 { Multi2dPanner::name, 3, Multi2dPanner::factory },
978 { string (""), 0, 0 }
982 Panner::get_state (void)
988 Panner::state (bool full)
990 XMLNode* root = new XMLNode (X_("Panner"));
993 root->add_property (X_("linked"), (_linked ? "yes" : "no"));
994 root->add_property (X_("link_direction"), enum_2_string (_link_direction));
995 root->add_property (X_("bypassed"), (bypassed() ? "yes" : "no"));
997 /* add each output */
999 for (vector<Panner::Output>::iterator o = outputs.begin(); o != outputs.end(); ++o) {
1000 XMLNode* onode = new XMLNode (X_("Output"));
1001 snprintf (buf, sizeof (buf), "%.12g", (*o).x);
1002 onode->add_property (X_("x"), buf);
1003 snprintf (buf, sizeof (buf), "%.12g", (*o).y);
1004 onode->add_property (X_("y"), buf);
1005 root->add_child_nocopy (*onode);
1008 for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
1009 root->add_child_nocopy ((*i)->state (full));
1016 Panner::set_state (const XMLNode& node)
1019 XMLNodeConstIterator niter;
1020 const XMLProperty *prop;
1023 LocaleGuard lg (X_("POSIX"));
1028 if ((prop = node.property (X_("linked"))) != 0) {
1029 set_linked (prop->value() == "yes");
1033 if ((prop = node.property (X_("bypassed"))) != 0) {
1034 set_bypassed (prop->value() == "yes");
1037 if ((prop = node.property (X_("link_direction"))) != 0) {
1038 LinkDirection ld; /* here to provide type information */
1039 set_link_direction (LinkDirection (string_2_enum (prop->value(), ld)));
1042 nlist = node.children();
1044 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1045 if ((*niter)->name() == X_("Output")) {
1049 prop = (*niter)->property (X_("x"));
1050 sscanf (prop->value().c_str(), "%g", &x);
1052 prop = (*niter)->property (X_("y"));
1053 sscanf (prop->value().c_str(), "%g", &y);
1055 outputs.push_back (Output (x, y));
1059 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1061 if ((*niter)->name() == X_("StreamPanner")) {
1063 if ((prop = (*niter)->property (X_("type")))) {
1065 for (i = 0; pan_plugins[i].factory; ++i) {
1066 if (prop->value() == pan_plugins[i].name) {
1069 /* note that we assume that all the stream panners
1070 are of the same type. pretty good
1071 assumption, but its still an assumption.
1074 sp = pan_plugins[i].factory (*this, Parameter(PanAutomation, 0));
1076 if (sp->set_state (**niter) == 0) {
1085 if (!pan_plugins[i].factory) {
1086 error << string_compose (_("Unknown panner plugin \"%1\" found in pan state - ignored"),
1092 error << _("panner plugin node has no type information!")
1100 /* don't try to do old-school automation loading if it wasn't marked as existing */
1102 if ((prop = node.property (X_("automation")))) {
1104 /* automation path is relative */
1106 automation_path = Glib::build_filename(_session.automation_dir(), prop->value ());
1115 Panner::touching () const
1117 for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
1118 if (((AutomationList*)(*i)->pan_control()->list().get())->touching ()) {
1127 Panner::set_position (float xpos, StreamPanner& orig)
1133 orig.get_position (xnow);
1134 xdelta = xpos - xnow;
1136 if (_link_direction == SameDirection) {
1138 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1140 (*i)->set_position (xpos, true);
1142 (*i)->get_position (xnow);
1143 xnew = min (1.0f, xnow + xdelta);
1144 xnew = max (0.0f, xnew);
1145 (*i)->set_position (xnew, true);
1151 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1153 (*i)->set_position (xpos, true);
1155 (*i)->get_position (xnow);
1156 xnew = min (1.0f, xnow - xdelta);
1157 xnew = max (0.0f, xnew);
1158 (*i)->set_position (xnew, true);
1165 Panner::set_position (float xpos, float ypos, StreamPanner& orig)
1168 float xdelta, ydelta;
1171 orig.get_position (xnow, ynow);
1172 xdelta = xpos - xnow;
1173 ydelta = ypos - ynow;
1175 if (_link_direction == SameDirection) {
1177 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1179 (*i)->set_position (xpos, ypos, true);
1181 (*i)->get_position (xnow, ynow);
1183 xnew = min (1.0f, xnow + xdelta);
1184 xnew = max (0.0f, xnew);
1186 ynew = min (1.0f, ynow + ydelta);
1187 ynew = max (0.0f, ynew);
1189 (*i)->set_position (xnew, ynew, true);
1195 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1197 (*i)->set_position (xpos, ypos, true);
1199 (*i)->get_position (xnow, ynow);
1201 xnew = min (1.0f, xnow - xdelta);
1202 xnew = max (0.0f, xnew);
1204 ynew = min (1.0f, ynow - ydelta);
1205 ynew = max (0.0f, ynew);
1207 (*i)->set_position (xnew, ynew, true);
1214 Panner::set_position (float xpos, float ypos, float zpos, StreamPanner& orig)
1216 float xnow, ynow, znow;
1217 float xdelta, ydelta, zdelta;
1218 float xnew, ynew, znew;
1220 orig.get_position (xnow, ynow, znow);
1221 xdelta = xpos - xnow;
1222 ydelta = ypos - ynow;
1223 zdelta = zpos - znow;
1225 if (_link_direction == SameDirection) {
1227 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1229 (*i)->set_position (xpos, ypos, zpos, true);
1231 (*i)->get_position (xnow, ynow, znow);
1233 xnew = min (1.0f, xnow + xdelta);
1234 xnew = max (0.0f, xnew);
1236 ynew = min (1.0f, ynow + ydelta);
1237 ynew = max (0.0f, ynew);
1239 znew = min (1.0f, znow + zdelta);
1240 znew = max (0.0f, znew);
1242 (*i)->set_position (xnew, ynew, znew, true);
1248 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1250 (*i)->set_position (xpos, ypos, true);
1252 (*i)->get_position (xnow, ynow, znow);
1254 xnew = min (1.0f, xnow - xdelta);
1255 xnew = max (0.0f, xnew);
1257 ynew = min (1.0f, ynow - ydelta);
1258 ynew = max (0.0f, ynew);
1260 znew = min (1.0f, znow + zdelta);
1261 znew = max (0.0f, znew);
1263 (*i)->set_position (xnew, ynew, znew, true);
1270 Panner::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, nframes_t nframes, nframes_t offset, gain_t gain_coeff)
1272 if (outbufs.count().n_audio() == 0) {
1273 // Don't want to lose audio...
1274 assert(inbufs.count().n_audio() == 0);
1278 // We shouldn't be called in the first place...
1279 assert(!bypassed());
1283 if (outbufs.count().n_audio() == 1) {
1285 AudioBuffer& dst = outbufs.get_audio(0);
1287 if (gain_coeff == 0.0f) {
1289 /* only one output, and gain was zero, so make it silent */
1291 dst.silence(offset);
1293 } else if (gain_coeff == 1.0f){
1295 /* mix all buffers into the output */
1298 dst.read_from(inbufs.get_audio(0), nframes, offset);
1300 // accumulate starting with the second
1301 if (inbufs.count().n_audio() > 0) {
1302 BufferSet::audio_iterator i = inbufs.audio_begin();
1303 for (++i; i != inbufs.audio_end(); ++i) {
1304 dst.accumulate_from(*i, nframes, offset);
1310 /* mix all buffers into the output, scaling them all by the gain */
1313 dst.read_from(inbufs.get_audio(0), nframes, offset);
1315 // accumulate (with gain) starting with the second
1316 if (inbufs.count().n_audio() > 0) {
1317 BufferSet::audio_iterator i = inbufs.audio_begin();
1318 for (++i; i != inbufs.audio_end(); ++i) {
1319 dst.accumulate_with_gain_from(*i, nframes, offset, gain_coeff);
1328 /* the terrible silence ... */
1329 for (BufferSet::audio_iterator i = outbufs.audio_begin(); i != outbufs.audio_end(); ++i) {
1330 i->silence(nframes, offset);
1333 BufferSet::audio_iterator i = inbufs.audio_begin();
1335 for (iterator pan = begin(); pan != end() && i != inbufs.audio_end(); ++pan, ++i) {
1336 (*pan)->distribute (*i, outbufs, gain_coeff, nframes);
1341 Panner::distribute (BufferSet& inbufs, BufferSet& outbufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset)
1343 if (outbufs.count().n_audio() == 0) {
1344 // Failing to deliver audio we were asked to deliver is a bug
1345 assert(inbufs.count().n_audio() == 0);
1349 // We shouldn't be called in the first place...
1350 assert(!bypassed());
1353 // If we shouldn't play automation defer to distribute_no_automation
1354 if ( !( automation_state() & Play ||
1355 ((automation_state() & Touch) && !touching()) ) ) {
1358 gain_t gain_coeff = 1.0;
1359 if (fabsf(_session.transport_speed()) > 1.5f) {
1360 gain_coeff = speed_quietning;
1363 distribute_no_automation(inbufs, outbufs, nframes, offset, gain_coeff);
1367 // Otherwise.. let the automation flow, baby
1369 if (outbufs.count().n_audio() == 1) {
1371 AudioBuffer& dst = outbufs.get_audio(0);
1373 // FIXME: apply gain automation?
1376 dst.read_from(inbufs.get_audio(0), nframes, offset);
1378 // accumulate starting with the second
1379 BufferSet::audio_iterator i = inbufs.audio_begin();
1380 for (++i; i != inbufs.audio_end(); ++i) {
1381 dst.accumulate_from(*i, nframes, offset);
1387 // More than 1 output, we should have 1 panner for each input
1388 assert(size() == inbufs.count().n_audio());
1390 /* the terrible silence ... */
1391 for (BufferSet::audio_iterator i = outbufs.audio_begin(); i != outbufs.audio_end(); ++i) {
1392 i->silence(nframes, offset);
1395 BufferSet::audio_iterator i = inbufs.audio_begin();
1396 for (iterator pan = begin(); pan != end(); ++pan, ++i) {
1397 (*pan)->distribute_automated (*i, outbufs, start_frame, end_frame, nframes, _session.pan_automation_buffer());
1401 /* old school automation handling */
1404 Panner::set_name (string str)
1406 automation_path = Glib::build_filename(_session.automation_dir(),
1407 _session.snap_name() + "-pan-" + legalize_for_path (str) + ".automation");
1414 uint32_t linecnt = 0;
1417 LocaleGuard lg (X_("POSIX"));
1419 if (automation_path.length() == 0) {
1423 if (access (automation_path.c_str(), F_OK)) {
1427 ifstream in (automation_path.c_str());
1430 error << string_compose (_("cannot open pan automation file %1 (%2)"),
1431 automation_path, strerror (errno))
1438 while (in.getline (line, sizeof(line), '\n')) {
1440 if (++linecnt == 1) {
1441 if (memcmp (line, X_("version"), 7) == 0) {
1442 if (sscanf (line, "version %f", &version) != 1) {
1443 error << string_compose(_("badly formed version number in pan automation event file \"%1\""), automation_path) << endmsg;
1447 error << string_compose(_("no version information in pan automation event file \"%1\" (first line = %2)"),
1448 automation_path, line) << endmsg;
1455 if (strlen (line) == 0 || line[0] == '#') {
1459 if (strcmp (line, "begin") == 0) {
1462 error << string_compose (_("too many panner states found in pan automation file %1"),
1468 if ((*sp)->load (in, automation_path, linecnt)) {