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.
33 #include <pbd/error.h>
34 #include <pbd/failed_constructor.h>
35 #include <pbd/xml++.h>
36 #include <pbd/enumwriter.h>
38 #include <ardour/session.h>
39 #include <ardour/panner.h>
40 #include <ardour/utils.h>
42 #include <ardour/mix.h>
46 #include <pbd/mathfix.h>
49 using namespace ARDOUR;
52 float Panner::current_automation_version_number = 1.0;
54 string EqualPowerStereoPanner::name = "Equal Power Stereo";
55 string Multi2dPanner::name = "Multiple (2D)";
57 /* this is a default mapper of control values to a pan position
58 others can be imagined.
61 static pan_t direct_control_to_pan (double fract) {
65 static double direct_pan_to_control (pan_t val) {
69 StreamPanner::StreamPanner (Panner& p)
71 _control (X_("panner"), *this)
75 parent.session().add_controllable (&_control);
82 StreamPanner::~StreamPanner ()
87 StreamPanner::PanControllable::set_value (float val)
89 panner.set_position (direct_control_to_pan (val));
93 StreamPanner::PanControllable::get_value (void) const
96 panner.get_effective_position (xpos);
97 return direct_pan_to_control (xpos);
101 StreamPanner::PanControllable::can_send_feedback () const
103 AutoState astate = panner.get_parent().automation_state ();
105 if ((astate == Play) || (astate == Touch && !panner.get_parent().touching())) {
113 StreamPanner::set_muted (bool yn)
122 StreamPanner::set_position (float xpos, bool link_call)
124 if (!link_call && parent.linked()) {
125 parent.set_position (xpos, *this);
137 StreamPanner::set_position (float xpos, float ypos, bool link_call)
139 if (!link_call && parent.linked()) {
140 parent.set_position (xpos, ypos, *this);
143 if (x != xpos || y != ypos) {
153 StreamPanner::set_position (float xpos, float ypos, float zpos, bool link_call)
155 if (!link_call && parent.linked()) {
156 parent.set_position (xpos, ypos, zpos, *this);
159 if (x != xpos || y != ypos || z != zpos) {
169 StreamPanner::set_state (const XMLNode& node)
171 const XMLProperty* prop;
172 XMLNodeConstIterator iter;
174 if ((prop = node.property (X_("muted")))) {
175 set_muted (prop->value() == "yes");
182 StreamPanner::add_state (XMLNode& node)
184 node.add_property (X_("muted"), (muted() ? "yes" : "no"));
187 /*---------------------------------------------------------------------- */
189 BaseStereoPanner::BaseStereoPanner (Panner& p)
190 : StreamPanner (p), _automation (0.0, 1.0, 0.5)
194 BaseStereoPanner::~BaseStereoPanner ()
199 BaseStereoPanner::snapshot (nframes_t now)
201 if (_automation.automation_state() == Write || _automation.automation_state() == Touch) {
202 _automation.rt_add (now, x);
207 BaseStereoPanner::transport_stopped (nframes_t frame)
209 _automation.reposition_for_rt_add (frame);
211 if (_automation.automation_state() != Off) {
212 set_position (_automation.eval (frame));
217 BaseStereoPanner::set_automation_style (AutoStyle style)
219 _automation.set_automation_style (style);
223 BaseStereoPanner::set_automation_state (AutoState state)
225 if (state != _automation.automation_state()) {
227 _automation.set_automation_state (state);
230 set_position (_automation.eval (parent.session().transport_frame()));
236 BaseStereoPanner::load (istream& in, string path, uint32_t& linecnt)
239 LocaleGuard lg (X_("POSIX"));
241 _automation.clear ();
243 while (in.getline (line, sizeof (line), '\n')) {
249 if (strcmp (line, "end") == 0) {
253 if (sscanf (line, "%" PRIu32 " %lf", &when, &value) != 2) {
254 warning << string_compose(_("badly formatted pan automation event record at line %1 of %2 (ignored) [%3]"), linecnt, path, line) << endmsg;
258 _automation.fast_simple_add (when, value);
261 /* now that we are done loading */
263 _automation.StateChanged ();
269 BaseStereoPanner::distribute (Sample* src, Sample** obufs, gain_t gain_coeff, nframes_t nframes)
283 if (fabsf ((delta = (left - desired_left))) > 0.002) { // about 1 degree of arc
285 /* interpolate over 64 frames or nframes, whichever is smaller */
287 nframes_t limit = min ((nframes_t)64, nframes);
290 delta = -(delta / (float) (limit));
292 for (n = 0; n < limit; n++) {
293 left_interp = left_interp + delta;
294 left = left_interp + 0.9 * (left - left_interp);
295 dst[n] += src[n] * left * gain_coeff;
298 pan = left * gain_coeff;
300 Session::mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
307 if ((pan = (left * gain_coeff)) != 1.0f) {
311 Session::mix_buffers_with_gain(dst,src,nframes,pan);
313 /* mark that we wrote into the buffer */
321 Session::mix_buffers_no_gain(dst,src,nframes);
323 /* mark that we wrote into the buffer */
333 if (fabsf ((delta = (right - desired_right))) > 0.002) { // about 1 degree of arc
335 /* interpolate over 64 frames or nframes, whichever is smaller */
337 nframes_t limit = min ((nframes_t)64, nframes);
340 delta = -(delta / (float) (limit));
342 for (n = 0; n < limit; n++) {
343 right_interp = right_interp + delta;
344 right = right_interp + 0.9 * (right - right_interp);
345 dst[n] += src[n] * right * gain_coeff;
348 pan = right * gain_coeff;
350 Session::mix_buffers_with_gain(dst+n,src+n,nframes-n,pan);
352 /* XXX it would be nice to mark the buffer as written to */
356 right = desired_right;
357 right_interp = right;
359 if ((pan = (right * gain_coeff)) != 1.0f) {
363 Session::mix_buffers_with_gain(dst,src,nframes,pan);
365 /* XXX it would be nice to mark the buffer as written to */
370 Session::mix_buffers_no_gain(dst,src,nframes);
372 /* XXX it would be nice to mark the buffer as written to */
377 /*---------------------------------------------------------------------- */
379 EqualPowerStereoPanner::EqualPowerStereoPanner (Panner& p)
380 : BaseStereoPanner (p)
385 right = desired_right;
387 right_interp = right;
390 EqualPowerStereoPanner::~EqualPowerStereoPanner ()
395 EqualPowerStereoPanner::update ()
397 /* it would be very nice to split this out into a virtual function
398 that can be accessed from BaseStereoPanner and used in distribute_automated().
400 but the place where its used in distribute_automated() is a tight inner loop,
401 and making "nframes" virtual function calls to compute values is an absurd
405 /* x == 0 => hard left
410 float panL = 1 - panR;
412 const float pan_law_attenuation = -3.0f;
413 const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
415 desired_left = panL * (scale * panL + 1.0f - scale);
416 desired_right = panR * (scale * panR + 1.0f - scale);
422 EqualPowerStereoPanner::distribute_automated (Sample* src, Sample** obufs,
423 nframes_t start, nframes_t end, nframes_t nframes,
429 /* fetch positional data */
431 if (!_automation.rt_safe_get_vector (start, end, buffers[0], nframes)) {
434 distribute (src, obufs, 1.0, nframes);
439 /* store effective pan position. do this even if we are muted */
442 effective_x = buffers[0][nframes-1];
448 /* apply pan law to convert positional data into pan coefficients for
452 const float pan_law_attenuation = -3.0f;
453 const float scale = 2.0f - 4.0f * powf (10.0f,pan_law_attenuation/20.0f);
455 for (nframes_t n = 0; n < nframes; ++n) {
457 float panR = buffers[0][n];
458 float panL = 1 - panR;
460 buffers[0][n] = panL * (scale * panL + 1.0f - scale);
461 buffers[1][n] = panR * (scale * panR + 1.0f - scale);
469 for (nframes_t n = 0; n < nframes; ++n) {
470 dst[n] += src[n] * pbuf[n];
473 /* XXX it would be nice to mark the buffer as written to */
480 for (nframes_t n = 0; n < nframes; ++n) {
481 dst[n] += src[n] * pbuf[n];
484 /* XXX it would be nice to mark the buffer as written to */
488 EqualPowerStereoPanner::factory (Panner& parent)
490 return new EqualPowerStereoPanner (parent);
494 EqualPowerStereoPanner::get_state (void)
500 EqualPowerStereoPanner::state (bool full_state)
502 XMLNode* root = new XMLNode ("StreamPanner");
504 LocaleGuard lg (X_("POSIX"));
506 snprintf (buf, sizeof (buf), "%.12g", x);
507 root->add_property (X_("x"), buf);
508 root->add_property (X_("type"), EqualPowerStereoPanner::name);
510 XMLNode* autonode = new XMLNode (X_("Automation"));
511 autonode->add_child_nocopy (_automation.state (full_state));
512 root->add_child_nocopy (*autonode);
514 StreamPanner::add_state (*root);
516 root->add_child_nocopy (_control.get_state ());
522 EqualPowerStereoPanner::set_state (const XMLNode& node)
524 const XMLProperty* prop;
526 LocaleGuard lg (X_("POSIX"));
528 if ((prop = node.property (X_("x")))) {
529 pos = atof (prop->value().c_str());
530 set_position (pos, true);
533 StreamPanner::set_state (node);
535 for (XMLNodeConstIterator iter = node.children().begin(); iter != node.children().end(); ++iter) {
537 if ((*iter)->name() == X_("controllable")) {
538 if ((prop = (*iter)->property("name")) != 0 && prop->value() == "panner") {
539 _control.set_state (**iter);
542 } else if ((*iter)->name() == X_("Automation")) {
544 _automation.set_state (*((*iter)->children().front()));
546 if (_automation.automation_state() != Off) {
547 set_position (_automation.eval (parent.session().transport_frame()));
555 /*----------------------------------------------------------------------*/
557 Multi2dPanner::Multi2dPanner (Panner& p)
558 : StreamPanner (p), _automation (0.0, 1.0, 0.5) // XXX useless
563 Multi2dPanner::~Multi2dPanner ()
568 Multi2dPanner::snapshot (nframes_t now)
574 Multi2dPanner::transport_stopped (nframes_t frame)
580 Multi2dPanner::set_automation_style (AutoStyle style)
586 Multi2dPanner::set_automation_state (AutoState state)
592 Multi2dPanner::update ()
594 static const float BIAS = FLT_MIN;
596 uint32_t nouts = parent.outputs.size();
603 for (i = 0; i < nouts; i++) {
604 dsq[i] = ((x - parent.outputs[i].x) * (x - parent.outputs[i].x) + (y - parent.outputs[i].y) * (y - parent.outputs[i].y) + BIAS);
608 f += dsq[i] * dsq[i];
611 // terrible hack to support OSX < 10.3.9 builds
612 fr = (float) (1.0 / sqrt((double)f));
616 for (i = 0; i < nouts; ++i) {
617 parent.outputs[i].desired_pan = 1.0f - (dsq[i] * fr);
624 Multi2dPanner::distribute (Sample* src, Sample** obufs, gain_t gain_coeff, nframes_t nframes)
628 vector<Panner::Output>::iterator o;
636 for (n = 0, o = parent.outputs.begin(); o != parent.outputs.end(); ++o, ++n) {
641 if (fabsf ((delta = (left_interp - desired_left))) > 0.002) { // about 1 degree of arc
643 /* interpolate over 64 frames or nframes, whichever is smaller */
645 nframes_t limit = min ((nframes_t)64, nframes);
648 delta = -(delta / (float) (limit));
650 for (n = 0; n < limit; n++) {
651 left_interp = left_interp + delta;
652 left = left_interp + 0.9 * (left - left_interp);
653 dst[n] += src[n] * left * gain_coeff;
656 pan = left * gain_coeff;
658 for (; n < nframes; ++n) {
659 dst[n] += src[n] * pan;
665 pan = (*o).desired_pan;
667 if ((pan *= gain_coeff) != 1.0f) {
671 for (nframes_t n = 0; n < nframes; ++n) {
672 dst[n] += src[n] * pan;
680 for (nframes_t n = 0; n < nframes; ++n) {
695 Multi2dPanner::distribute_automated (Sample* src, Sample** obufs,
696 nframes_t start, nframes_t end, nframes_t nframes,
709 Multi2dPanner::factory (Panner& p)
711 return new Multi2dPanner (p);
715 Multi2dPanner::load (istream& in, string path, uint32_t& linecnt)
721 Multi2dPanner::get_state (void)
727 Multi2dPanner::state (bool full_state)
729 XMLNode* root = new XMLNode ("StreamPanner");
731 LocaleGuard lg (X_("POSIX"));
733 snprintf (buf, sizeof (buf), "%.12g", x);
734 root->add_property (X_("x"), buf);
735 snprintf (buf, sizeof (buf), "%.12g", y);
736 root->add_property (X_("y"), buf);
737 root->add_property (X_("type"), Multi2dPanner::name);
739 /* XXX no meaningful automation yet */
745 Multi2dPanner::set_state (const XMLNode& node)
747 const XMLProperty* prop;
749 LocaleGuard lg (X_("POSIX"));
754 if ((prop = node.property (X_("x")))) {
755 newx = atof (prop->value().c_str());
758 if ((prop = node.property (X_("y")))) {
759 newy = atof (prop->value().c_str());
762 if (x < 0 || y < 0) {
763 error << _("badly-formed positional data for Multi2dPanner - ignored")
768 set_position (newx, newy);
772 /*---------------------------------------------------------------------- */
774 Panner::Panner (string name, Session& s)
780 _link_direction = SameDirection;
789 Panner::set_linked (bool yn)
793 _session.set_dirty ();
794 LinkStateChanged (); /* EMIT SIGNAL */
799 Panner::set_link_direction (LinkDirection ld)
801 if (ld != _link_direction) {
802 _link_direction = ld;
803 _session.set_dirty ();
804 LinkStateChanged (); /* EMIT SIGNAL */
809 Panner::set_bypassed (bool yn)
811 if (yn != _bypassed) {
819 Panner::reset (uint32_t nouts, uint32_t npans)
822 bool changed = false;
824 if (nouts < 2 || (nouts == outputs.size() && npans == size())) {
847 fatal << _("programming error:")
848 << X_("Panner::reset() called with a single output")
855 outputs.push_back (Output (0, 0));
856 outputs.push_back (Output (1.0, 0));
858 for (n = 0; n < npans; ++n) {
859 push_back (new EqualPowerStereoPanner (*this));
864 outputs.push_back (Output (0.5, 0));
865 outputs.push_back (Output (0, 1.0));
866 outputs.push_back (Output (1.0, 1.0));
868 for (n = 0; n < npans; ++n) {
869 push_back (new Multi2dPanner (*this));
875 outputs.push_back (Output (0, 0));
876 outputs.push_back (Output (1.0, 0));
877 outputs.push_back (Output (1.0, 1.0));
878 outputs.push_back (Output (0, 1.0));
880 for (n = 0; n < npans; ++n) {
881 push_back (new Multi2dPanner (*this));
886 case 5: //square+offcenter center
887 outputs.push_back (Output (0, 0));
888 outputs.push_back (Output (1.0, 0));
889 outputs.push_back (Output (1.0, 1.0));
890 outputs.push_back (Output (0, 1.0));
891 outputs.push_back (Output (0.5, 0.75));
893 for (n = 0; n < npans; ++n) {
894 push_back (new Multi2dPanner (*this));
900 /* XXX horrible placement. FIXME */
901 for (n = 0; n < nouts; ++n) {
902 outputs.push_back (Output (0.1 * n, 0.1 * n));
905 for (n = 0; n < npans; ++n) {
906 push_back (new Multi2dPanner (*this));
912 for (iterator x = begin(); x != end(); ++x) {
916 /* force hard left/right panning in a common case: 2in/2out
919 if (npans == 2 && outputs.size() == 2) {
921 /* Do this only if we changed configuration, or our configuration
922 appears to be the default set up (center).
928 front()->get_position (left);
929 back()->get_position (right);
931 if (changed || ((left == 0.5) && (right == 0.5))) {
933 front()->set_position (0.0);
934 front()->automation().reset_default (0.0);
936 back()->set_position (1.0);
937 back()->automation().reset_default (1.0);
944 Changed (); /* EMIT SIGNAL */
951 Panner::remove (uint32_t which)
953 vector<StreamPanner*>::iterator i;
954 for (i = begin(); i != end() && which; ++i, --which);
965 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
969 vector<StreamPanner*>::clear ();
973 Panner::set_automation_style (AutoStyle style)
975 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
976 (*i)->set_automation_style (style);
978 _session.set_dirty ();
982 Panner::set_automation_state (AutoState state)
984 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
985 (*i)->set_automation_state (state);
987 _session.set_dirty ();
991 Panner::automation_state () const
994 return front()->automation().automation_state ();
1001 Panner::automation_style () const
1004 return front()->automation().automation_style ();
1011 Panner::transport_stopped (nframes_t frame)
1013 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1014 (*i)->transport_stopped (frame);
1019 Panner::snapshot (nframes_t now)
1021 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1022 (*i)->snapshot (now);
1027 Panner::clear_automation ()
1029 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1030 (*i)->automation().clear ();
1032 _session.set_dirty ();
1038 StreamPanner* (*factory)(Panner&);
1041 PanPlugins pan_plugins[] = {
1042 { EqualPowerStereoPanner::name, 2, EqualPowerStereoPanner::factory },
1043 { Multi2dPanner::name, 3, Multi2dPanner::factory },
1044 { string (""), 0, 0 }
1048 Panner::get_state (void)
1050 return state (true);
1054 Panner::state (bool full)
1056 XMLNode* root = new XMLNode (X_("Panner"));
1059 root->add_property (X_("linked"), (_linked ? "yes" : "no"));
1060 root->add_property (X_("link_direction"), enum_2_string (_link_direction));
1061 root->add_property (X_("bypassed"), (bypassed() ? "yes" : "no"));
1063 /* add each output */
1065 for (vector<Panner::Output>::iterator o = outputs.begin(); o != outputs.end(); ++o) {
1066 XMLNode* onode = new XMLNode (X_("Output"));
1067 snprintf (buf, sizeof (buf), "%.12g", (*o).x);
1068 onode->add_property (X_("x"), buf);
1069 snprintf (buf, sizeof (buf), "%.12g", (*o).y);
1070 onode->add_property (X_("y"), buf);
1071 root->add_child_nocopy (*onode);
1074 for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
1075 root->add_child_nocopy ((*i)->state (full));
1082 Panner::set_state (const XMLNode& node)
1085 XMLNodeConstIterator niter;
1086 const XMLProperty *prop;
1089 LocaleGuard lg (X_("POSIX"));
1094 if ((prop = node.property (X_("linked"))) != 0) {
1095 set_linked (prop->value() == "yes");
1099 if ((prop = node.property (X_("bypassed"))) != 0) {
1100 set_bypassed (prop->value() == "yes");
1103 if ((prop = node.property (X_("link_direction"))) != 0) {
1104 LinkDirection ld; /* here to provide type information */
1105 set_link_direction (LinkDirection (string_2_enum (prop->value(), ld)));
1108 nlist = node.children();
1110 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1111 if ((*niter)->name() == X_("Output")) {
1115 prop = (*niter)->property (X_("x"));
1116 sscanf (prop->value().c_str(), "%g", &x);
1118 prop = (*niter)->property (X_("y"));
1119 sscanf (prop->value().c_str(), "%g", &y);
1121 outputs.push_back (Output (x, y));
1125 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1127 if ((*niter)->name() == X_("StreamPanner")) {
1129 if ((prop = (*niter)->property (X_("type")))) {
1131 for (i = 0; pan_plugins[i].factory; ++i) {
1132 if (prop->value() == pan_plugins[i].name) {
1135 /* note that we assume that all the stream panners
1136 are of the same type. pretty good
1137 assumption, but its still an assumption.
1140 sp = pan_plugins[i].factory (*this);
1142 if (sp->set_state (**niter) == 0) {
1151 if (!pan_plugins[i].factory) {
1152 error << string_compose (_("Unknown panner plugin \"%1\" found in pan state - ignored"),
1158 error << _("panner plugin node has no type information!")
1166 /* don't try to do old-school automation loading if it wasn't marked as existing */
1168 if ((prop = node.property (X_("automation")))) {
1170 /* automation path is relative */
1172 automation_path = _session.automation_dir();
1173 automation_path += prop->value ();
1182 Panner::touching () const
1184 for (vector<StreamPanner*>::const_iterator i = begin(); i != end(); ++i) {
1185 if ((*i)->automation().touching ()) {
1194 Panner::set_position (float xpos, StreamPanner& orig)
1200 orig.get_position (xnow);
1201 xdelta = xpos - xnow;
1203 if (_link_direction == SameDirection) {
1205 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1207 (*i)->set_position (xpos, true);
1209 (*i)->get_position (xnow);
1210 xnew = min (1.0f, xnow + xdelta);
1211 xnew = max (0.0f, xnew);
1212 (*i)->set_position (xnew, true);
1218 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1220 (*i)->set_position (xpos, true);
1222 (*i)->get_position (xnow);
1223 xnew = min (1.0f, xnow - xdelta);
1224 xnew = max (0.0f, xnew);
1225 (*i)->set_position (xnew, true);
1232 Panner::set_position (float xpos, float ypos, StreamPanner& orig)
1235 float xdelta, ydelta;
1238 orig.get_position (xnow, ynow);
1239 xdelta = xpos - xnow;
1240 ydelta = ypos - ynow;
1242 if (_link_direction == SameDirection) {
1244 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1246 (*i)->set_position (xpos, ypos, true);
1248 (*i)->get_position (xnow, ynow);
1250 xnew = min (1.0f, xnow + xdelta);
1251 xnew = max (0.0f, xnew);
1253 ynew = min (1.0f, ynow + ydelta);
1254 ynew = max (0.0f, ynew);
1256 (*i)->set_position (xnew, ynew, true);
1262 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1264 (*i)->set_position (xpos, ypos, true);
1266 (*i)->get_position (xnow, ynow);
1268 xnew = min (1.0f, xnow - xdelta);
1269 xnew = max (0.0f, xnew);
1271 ynew = min (1.0f, ynow - ydelta);
1272 ynew = max (0.0f, ynew);
1274 (*i)->set_position (xnew, ynew, true);
1281 Panner::set_position (float xpos, float ypos, float zpos, StreamPanner& orig)
1283 float xnow, ynow, znow;
1284 float xdelta, ydelta, zdelta;
1285 float xnew, ynew, znew;
1287 orig.get_position (xnow, ynow, znow);
1288 xdelta = xpos - xnow;
1289 ydelta = ypos - ynow;
1290 zdelta = zpos - znow;
1292 if (_link_direction == SameDirection) {
1294 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1296 (*i)->set_position (xpos, ypos, zpos, true);
1298 (*i)->get_position (xnow, ynow, znow);
1300 xnew = min (1.0f, xnow + xdelta);
1301 xnew = max (0.0f, xnew);
1303 ynew = min (1.0f, ynow + ydelta);
1304 ynew = max (0.0f, ynew);
1306 znew = min (1.0f, znow + zdelta);
1307 znew = max (0.0f, znew);
1309 (*i)->set_position (xnew, ynew, znew, true);
1315 for (vector<StreamPanner*>::iterator i = begin(); i != end(); ++i) {
1317 (*i)->set_position (xpos, ypos, true);
1319 (*i)->get_position (xnow, ynow, znow);
1321 xnew = min (1.0f, xnow - xdelta);
1322 xnew = max (0.0f, xnew);
1324 ynew = min (1.0f, ynow - ydelta);
1325 ynew = max (0.0f, ynew);
1327 znew = min (1.0f, znow + zdelta);
1328 znew = max (0.0f, znew);
1330 (*i)->set_position (xnew, ynew, znew, true);
1336 /* old school automation handling */
1339 Panner::set_name (string str)
1341 automation_path = _session.automation_dir();
1342 automation_path += _session.snap_name();
1343 automation_path += "-pan-";
1344 automation_path += legalize_for_path (str);
1345 automation_path += ".automation";
1352 uint32_t linecnt = 0;
1355 LocaleGuard lg (X_("POSIX"));
1357 if (automation_path.length() == 0) {
1361 if (access (automation_path.c_str(), F_OK)) {
1365 ifstream in (automation_path.c_str());
1368 error << string_compose (_("cannot open pan automation file %1 (%2)"),
1369 automation_path, strerror (errno))
1376 while (in.getline (line, sizeof(line), '\n')) {
1378 if (++linecnt == 1) {
1379 if (memcmp (line, X_("version"), 7) == 0) {
1380 if (sscanf (line, "version %f", &version) != 1) {
1381 error << string_compose(_("badly formed version number in pan automation event file \"%1\""), automation_path) << endmsg;
1385 error << string_compose(_("no version information in pan automation event file \"%1\" (first line = %2)"),
1386 automation_path, line) << endmsg;
1393 if (strlen (line) == 0 || line[0] == '#') {
1397 if (strcmp (line, "begin") == 0) {
1400 error << string_compose (_("too many panner states found in pan automation file %1"),
1406 if ((*sp)->load (in, automation_path, linecnt)) {