libs/ardour/pannable.cc

   1 /*
   2     Copyright (C) 2011 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #include "pbd/error.h"
  21 #include "pbd/convert.h"
  22
  23 #include "ardour/automation_control.h"
  24 #include "ardour/automation_list.h"
  25 #include "ardour/pannable.h"
  26 #include "ardour/pan_controllable.h"
  27 #include "ardour/session.h"
  28
  29 using namespace PBD;
  30 using namespace ARDOUR;
  31
  32 Pannable::Pannable (Session& s)
  33         : Automatable (s)
  34         , SessionHandleRef (s)
  35         , pan_azimuth_control (new PanControllable (s, "", this, PanAzimuthAutomation))
  36         , pan_elevation_control (new PanControllable (s, "", this, PanElevationAutomation))
  37         , pan_width_control (new PanControllable (s, "", this, PanWidthAutomation))
  38         , pan_frontback_control (new PanControllable (s, "", this, PanFrontBackAutomation))
  39         , pan_lfe_control (new PanControllable (s, "", this, PanLFEAutomation))
  40         , _auto_state (Off)
  41         , _auto_style (Absolute)
  42         , _has_state (false)
  43         , _responding_to_control_auto_state_change (0)
  44 {
  45         add_control (pan_azimuth_control);
  46         add_control (pan_elevation_control);
  47         add_control (pan_width_control);
  48         add_control (pan_frontback_control);
  49         add_control (pan_lfe_control);
  50
  51         /* all controls change state together */
  52
  53         pan_azimuth_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  54         pan_elevation_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  55         pan_width_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  56         pan_frontback_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  57         pan_lfe_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  58 }
  59
  60 void
  61 Pannable::control_auto_state_changed (AutoState new_state)
  62 {
  63         if (_responding_to_control_auto_state_change) {
  64                 return;
  65         }
  66
  67         _responding_to_control_auto_state_change++;
  68
  69         pan_azimuth_control->set_automation_state (new_state);
  70         pan_width_control->set_automation_state (new_state);
  71         pan_elevation_control->set_automation_state (new_state);
  72         pan_frontback_control->set_automation_state (new_state);
  73         pan_lfe_control->set_automation_state (new_state);
  74
  75         _responding_to_control_auto_state_change--;
  76
  77         _auto_state = new_state;
  78         automation_state_changed (new_state);  /* EMIT SIGNAL */
  79 }
  80
  81 void
  82 Pannable::set_panner (boost::shared_ptr<Panner> p)
  83 {
  84         _panner = p;
  85 }
  86
  87 void
  88 Pannable::set_automation_state (AutoState state)
  89 {
  90         if (state != _auto_state) {
  91                 _auto_state = state;
  92
  93                 const Controls& c (controls());
  94
  95                 for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
  96                         boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
  97                         if (ac) {
  98                                 ac->alist()->set_automation_state (state);
  99                         }
 100                 }
 101
 102                 session().set_dirty ();
 103                 automation_state_changed (_auto_state);
 104         }
 105 }
 106
 107 void
 108 Pannable::set_automation_style (AutoStyle style)
 109 {
 110         if (style != _auto_style) {
 111                 _auto_style = style;
 112
 113                 const Controls& c (controls());
 114
 115                 for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 116                         boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 117                         if (ac) {
 118                                 ac->alist()->set_automation_style (style);
 119                         }
 120                 }
 121
 122                 session().set_dirty ();
 123                 automation_style_changed ();
 124         }
 125 }
 126
 127 void
 128 Pannable::start_touch (double when)
 129 {
 130         const Controls& c (controls());
 131
 132         for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 133                 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 134                 if (ac) {
 135                         ac->alist()->start_touch (when);
 136                 }
 137         }
 138         g_atomic_int_set (&_touching, 1);
 139 }
 140
 141 void
 142 Pannable::stop_touch (bool mark, double when)
 143 {
 144         const Controls& c (controls());
 145
 146         for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 147                 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 148                 if (ac) {
 149                         ac->alist()->stop_touch (mark, when);
 150                 }
 151         }
 152         g_atomic_int_set (&_touching, 0);
 153 }
 154
 155 XMLNode&
 156 Pannable::get_state ()
 157 {
 158         return state (true);
 159 }
 160
 161 XMLNode&
 162 Pannable::state (bool full)
 163 {
 164         XMLNode* node = new XMLNode (X_("Pannable"));
 165         XMLNode* control_node;
 166         char buf[32];
 167
 168         control_node = new XMLNode (X_("azimuth"));
 169         snprintf (buf, sizeof(buf), "%.12g", pan_azimuth_control->get_value());
 170         control_node->add_property (X_("value"), buf);
 171         node->add_child_nocopy (*control_node);
 172
 173         control_node = new XMLNode (X_("width"));
 174         snprintf (buf, sizeof(buf), "%.12g", pan_width_control->get_value());
 175         control_node->add_property (X_("value"), buf);
 176         node->add_child_nocopy (*control_node);
 177
 178         control_node = new XMLNode (X_("elevation"));
 179         snprintf (buf, sizeof(buf), "%.12g", pan_elevation_control->get_value());
 180         control_node->add_property (X_("value"), buf);
 181         node->add_child_nocopy (*control_node);
 182
 183         control_node = new XMLNode (X_("frontback"));
 184         snprintf (buf, sizeof(buf), "%.12g", pan_frontback_control->get_value());
 185         control_node->add_property (X_("value"), buf);
 186         node->add_child_nocopy (*control_node);
 187
 188         control_node = new XMLNode (X_("lfe"));
 189         snprintf (buf, sizeof(buf), "%.12g", pan_lfe_control->get_value());
 190         control_node->add_property (X_("value"), buf);
 191         node->add_child_nocopy (*control_node);
 192
 193         node->add_child_nocopy (get_automation_xml_state ());
 194
 195      return *node;
 196 }
 197
 198 int
 199 Pannable::set_state (const XMLNode& root, int /*version - not used*/)
 200 {
 201         if (root.name() != X_("Pannable")) {
 202                 warning << string_compose (_("Pannable given XML data for %1 - ignored"), root.name()) << endmsg;
 203                 return -1;
 204         }
 205
 206         XMLNodeList nlist;
 207         XMLNodeConstIterator niter;
 208         const XMLProperty *prop;
 209
 210         nlist = root.children();
 211
 212         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 213                 if ((*niter)->name() == X_("azimuth")) {
 214                         prop = (*niter)->property (X_("value"));
 215                         if (prop) {
 216                                 pan_azimuth_control->set_value (atof (prop->value()));
 217                         }
 218                 } else if ((*niter)->name() == X_("width")) {
 219                         prop = (*niter)->property (X_("value"));
 220                         if (prop) {
 221                                 pan_width_control->set_value (atof (prop->value()));
 222                         }
 223                 } else if ((*niter)->name() == X_("elevation")) {
 224                         prop = (*niter)->property (X_("value"));
 225                         if (prop) {
 226                                 pan_elevation_control->set_value (atof (prop->value()));
 227                         }
 228                 } else if ((*niter)->name() == X_("azimuth")) {
 229                         prop = (*niter)->property (X_("value"));
 230                         if (prop) {
 231                                 pan_frontback_control->set_value (atof (prop->value()));
 232                         }
 233                 } else if ((*niter)->name() == X_("lfe")) {
 234                         prop = (*niter)->property (X_("value"));
 235                         if (prop) {
 236                                 pan_lfe_control->set_value (atof (prop->value()));
 237                         }
 238                 } else if ((*niter)->name() == Automatable::xml_node_name) {
 239                         set_automation_xml_state (**niter, PanAzimuthAutomation);
 240                 }
 241         }
 242
 243         _has_state = true;
 244
 245         return 0;
 246 }
 247
 248
 249
 250