libs/ardour/mute_master.cc

   1 /*
   2
   3     Copyright (C) 2009 Paul Davis
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #include "pbd/enumwriter.h"
  22
  23 #include "ardour/mute_master.h"
  24 #include "ardour/rc_configuration.h"
  25
  26 #include "i18n.h"
  27
  28 using namespace ARDOUR;
  29
  30 MuteMaster::MuteMaster (Session& s, const std::string& name)
  31         : AutomationControl (s, Evoral::Parameter (MuteAutomation), boost::shared_ptr<AutomationList>(), name)
  32         , _mute_point (MutePoint (0))
  33 {
  34         // default range for parameter is fine
  35
  36         _automation = new AutomationList (MuteAutomation);
  37         set_list (boost::shared_ptr<AutomationList>(_automation));
  38 }
  39
  40 void
  41 MuteMaster::clear_mute ()
  42 {
  43         if (_mute_point != MutePoint (0)) {
  44                 _mute_point = MutePoint (0);
  45                 MutePointChanged (); // EMIT SIGNAL
  46         }
  47 }
  48
  49 void
  50 MuteMaster::mute_at (MutePoint mp)
  51 {
  52         if ((_mute_point & mp) != mp) {
  53                 _mute_point = MutePoint (_mute_point | mp);
  54                 MutePointChanged (); // EMIT SIGNAL
  55         }
  56 }
  57
  58 void
  59 MuteMaster::unmute_at (MutePoint mp)
  60 {
  61         if ((_mute_point & mp) == mp) {
  62                 _mute_point = MutePoint (_mute_point & ~mp);
  63                 MutePointChanged (); // EMIT SIGNAL
  64         }
  65 }
  66
  67 void
  68 MuteMaster::mute (bool yn)
  69 {
  70         /* convenience wrapper around AutomationControl method */
  71
  72         if (yn) {
  73                 set_value ((float) 0xffff);
  74         } else {
  75                 set_value (0.0f);
  76         }
  77 }
  78
  79 gain_t
  80 MuteMaster::mute_gain_at (MutePoint mp) const
  81 {
  82         if (_mute_point & mp) {
  83                 return Config->get_solo_mute_gain ();
  84         } else {
  85                 return 1.0;
  86         }
  87 }
  88
  89 void
  90 MuteMaster::set_value (float f)
  91 {
  92         MutePoint old = _mute_point;
  93         _mute_point = (MutePoint) (rint (f));
  94         if (old != _mute_point) {
  95                 MutePointChanged (); // EMIT SIGNAL
  96         }
  97 }
  98
  99 float
 100 MuteMaster::get_value () const
 101 {
 102         return (float) _mute_point;
 103 }
 104
 105 int
 106 MuteMaster::set_state (const XMLNode& node, int /*version*/)
 107 {
 108         const XMLProperty* prop;
 109
 110         if ((prop = node.property ("mute-point")) != 0) {
 111                 _mute_point = (MutePoint) string_2_enum (prop->value(), _mute_point);
 112         }
 113
 114         return 0;
 115 }
 116
 117 XMLNode&
 118 MuteMaster::get_state()
 119 {
 120         XMLNode* node = new XMLNode (X_("MuteMaster"));
 121         node->add_property ("mute-point", enum_2_string (_mute_point));
 122         return *node;
 123 }