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 #include "pbd/compose.h"
  23
  24 #include "ardour/debug.h"
  25 #include "ardour/automation_control.h"
  26 #include "ardour/automation_list.h"
  27 #include "ardour/pannable.h"
  28 #include "ardour/panner.h"
  29 #include "ardour/pan_controllable.h"
  30 #include "ardour/session.h"
  31
  32 #include "i18n.h"
  33
  34 using namespace std;
  35 using namespace PBD;
  36 using namespace ARDOUR;
  37
  38 Pannable::Pannable (Session& s)
  39         : Automatable (s)
  40         , SessionHandleRef (s)
  41         , pan_azimuth_control (new PanControllable (s, "", this, PanAzimuthAutomation))
  42         , pan_elevation_control (new PanControllable (s, "", this, PanElevationAutomation))
  43         , pan_width_control (new PanControllable (s, "", this, PanWidthAutomation))
  44         , pan_frontback_control (new PanControllable (s, "", this, PanFrontBackAutomation))
  45         , pan_lfe_control (new PanControllable (s, "", this, PanLFEAutomation))
  46         , _auto_state (Off)
  47         , _auto_style (Absolute)
  48         , _has_state (false)
  49         , _responding_to_control_auto_state_change (0)
  50 {
  51         add_control (pan_azimuth_control);
  52         add_control (pan_elevation_control);
  53         add_control (pan_width_control);
  54         add_control (pan_frontback_control);
  55         add_control (pan_lfe_control);
  56
  57         /* all controls change state together */
  58
  59         pan_azimuth_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  60         pan_elevation_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  61         pan_width_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  62         pan_frontback_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  63         pan_lfe_control->alist()->automation_state_changed.connect_same_thread (*this, boost::bind (&Pannable::control_auto_state_changed, this, _1));
  64
  65         pan_azimuth_control->Changed.connect_same_thread (*this, boost::bind (&Pannable::value_changed, this));
  66         pan_elevation_control->Changed.connect_same_thread (*this, boost::bind (&Pannable::value_changed, this));
  67         pan_width_control->Changed.connect_same_thread (*this, boost::bind (&Pannable::value_changed, this));
  68         pan_frontback_control->Changed.connect_same_thread (*this, boost::bind (&Pannable::value_changed, this));
  69         pan_lfe_control->Changed.connect_same_thread (*this, boost::bind (&Pannable::value_changed, this));
  70 }
  71
  72 Pannable::~Pannable ()
  73 {
  74         DEBUG_TRACE (DEBUG::Destruction, string_compose ("pannable @ %1 destructor\n", this));
  75 }
  76
  77 void
  78 Pannable::control_auto_state_changed (AutoState new_state)
  79 {
  80         if (_responding_to_control_auto_state_change) {
  81                 return;
  82         }
  83
  84         _responding_to_control_auto_state_change++;
  85
  86         pan_azimuth_control->set_automation_state (new_state);
  87         pan_width_control->set_automation_state (new_state);
  88         pan_elevation_control->set_automation_state (new_state);
  89         pan_frontback_control->set_automation_state (new_state);
  90         pan_lfe_control->set_automation_state (new_state);
  91
  92         _responding_to_control_auto_state_change--;
  93
  94         _auto_state = new_state;
  95         automation_state_changed (new_state);  /* EMIT SIGNAL */
  96 }
  97
  98 void
  99 Pannable::set_panner (boost::shared_ptr<Panner> p)
 100 {
 101         _panner = p;
 102 }
 103
 104 void
 105 Pannable::value_changed ()
 106 {
 107         _session.set_dirty ();
 108 }
 109
 110 void
 111 Pannable::set_automation_state (AutoState state)
 112 {
 113         if (state != _auto_state) {
 114                 _auto_state = state;
 115
 116                 const Controls& c (controls());
 117
 118                 for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 119                         boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 120                         if (ac) {
 121                                 ac->alist()->set_automation_state (state);
 122                         }
 123                 }
 124
 125                 session().set_dirty ();
 126                 automation_state_changed (_auto_state);
 127         }
 128 }
 129
 130 void
 131 Pannable::set_automation_style (AutoStyle style)
 132 {
 133         if (style != _auto_style) {
 134                 _auto_style = style;
 135
 136                 const Controls& c (controls());
 137
 138                 for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 139                         boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 140                         if (ac) {
 141                                 ac->alist()->set_automation_style (style);
 142                         }
 143                 }
 144
 145                 session().set_dirty ();
 146                 automation_style_changed ();
 147         }
 148 }
 149
 150 void
 151 Pannable::start_touch (double when)
 152 {
 153         const Controls& c (controls());
 154
 155         for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 156                 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 157                 if (ac) {
 158                         ac->alist()->start_touch (when);
 159                 }
 160         }
 161         g_atomic_int_set (&_touching, 1);
 162 }
 163
 164 void
 165 Pannable::stop_touch (bool mark, double when)
 166 {
 167         const Controls& c (controls());
 168
 169         for (Controls::const_iterator ci = c.begin(); ci != c.end(); ++ci) {
 170                 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
 171                 if (ac) {
 172                         ac->alist()->stop_touch (mark, when);
 173                 }
 174         }
 175         g_atomic_int_set (&_touching, 0);
 176 }
 177
 178 XMLNode&
 179 Pannable::get_state ()
 180 {
 181         return state (true);
 182 }
 183
 184 XMLNode&
 185 Pannable::state (bool full)
 186 {
 187         XMLNode* node = new XMLNode (X_("Pannable"));
 188         XMLNode* control_node;
 189         char buf[32];
 190
 191         control_node = new XMLNode (X_("azimuth"));
 192         snprintf (buf, sizeof(buf), "%.12g", pan_azimuth_control->get_value());
 193         control_node->add_property (X_("value"), buf);
 194         node->add_child_nocopy (*control_node);
 195
 196         control_node = new XMLNode (X_("width"));
 197         snprintf (buf, sizeof(buf), "%.12g", pan_width_control->get_value());
 198         control_node->add_property (X_("value"), buf);
 199         node->add_child_nocopy (*control_node);
 200
 201         control_node = new XMLNode (X_("elevation"));
 202         snprintf (buf, sizeof(buf), "%.12g", pan_elevation_control->get_value());
 203         control_node->add_property (X_("value"), buf);
 204         node->add_child_nocopy (*control_node);
 205
 206         control_node = new XMLNode (X_("frontback"));
 207         snprintf (buf, sizeof(buf), "%.12g", pan_frontback_control->get_value());
 208         control_node->add_property (X_("value"), buf);
 209         node->add_child_nocopy (*control_node);
 210
 211         control_node = new XMLNode (X_("lfe"));
 212         snprintf (buf, sizeof(buf), "%.12g", pan_lfe_control->get_value());
 213         control_node->add_property (X_("value"), buf);
 214         node->add_child_nocopy (*control_node);
 215
 216         node->add_child_nocopy (get_automation_xml_state ());
 217
 218      return *node;
 219 }
 220
 221 int
 222 Pannable::set_state (const XMLNode& root, int /*version - not used*/)
 223 {
 224         if (root.name() != X_("Pannable")) {
 225                 warning << string_compose (_("Pannable given XML data for %1 - ignored"), root.name()) << endmsg;
 226                 return -1;
 227         }
 228
 229         XMLNodeList nlist;
 230         XMLNodeConstIterator niter;
 231         const XMLProperty *prop;
 232
 233         nlist = root.children();
 234
 235         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 236                 if ((*niter)->name() == X_("azimuth")) {
 237                         prop = (*niter)->property (X_("value"));
 238                         if (prop) {
 239                                 pan_azimuth_control->set_value (atof (prop->value()));
 240                         }
 241                 } else if ((*niter)->name() == X_("width")) {
 242                         prop = (*niter)->property (X_("value"));
 243                         if (prop) {
 244                                 pan_width_control->set_value (atof (prop->value()));
 245                         }
 246                 } else if ((*niter)->name() == X_("elevation")) {
 247                         prop = (*niter)->property (X_("value"));
 248                         if (prop) {
 249                                 pan_elevation_control->set_value (atof (prop->value()));
 250                         }
 251                 } else if ((*niter)->name() == X_("azimuth")) {
 252                         prop = (*niter)->property (X_("value"));
 253                         if (prop) {
 254                                 pan_frontback_control->set_value (atof (prop->value()));
 255                         }
 256                 } else if ((*niter)->name() == X_("lfe")) {
 257                         prop = (*niter)->property (X_("value"));
 258                         if (prop) {
 259                                 pan_lfe_control->set_value (atof (prop->value()));
 260                         }
 261                 } else if ((*niter)->name() == Automatable::xml_node_name) {
 262                         set_automation_xml_state (**niter, PanAzimuthAutomation);
 263                 }
 264         }
 265
 266         _has_state = true;
 267
 268         return 0;
 269 }
 270
 271 string
 272 Pannable::value_as_string (boost::shared_ptr<AutomationControl> ac) const
 273 {
 274         boost::shared_ptr<Panner> p = panner ();
 275
 276         if (p) {
 277                 return p->value_as_string (ac);
 278         }
 279
 280         return Automatable::value_as_string (ac);
 281 }