gtk2_ardour/redirect_automation_line.cc

   1 /*
   2     Copyright (C) 2002-2003 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 "public_editor.h"
  21 #include "redirect_automation_line.h"
  22 #include "audio_time_axis.h"
  23 #include "utils.h"
  24
  25 #include <ardour/session.h>
  26 #include <ardour/ladspa_plugin.h>
  27 #include <ardour/insert.h>
  28 #include <ardour/curve.h>
  29
  30 #include "i18n.h"
  31
  32 using namespace std;
  33 using namespace ARDOUR;
  34 using namespace PBD;
  35
  36 RedirectAutomationLine::RedirectAutomationLine (const string & name, Redirect& rd, uint32_t port, Session& s,
  37
  38                                                 TimeAxisView& tv, ArdourCanvas::Group& parent,
  39
  40                                                 AutomationList& l)
  41
  42         : AutomationLine (name, tv, parent, l),
  43           session (s),
  44           _redirect (rd),
  45           _port (port)
  46 {
  47         set_verbose_cursor_uses_gain_mapping (false);
  48
  49         PluginInsert *pi;
  50         Plugin::ParameterDescriptor desc;
  51
  52         if ((pi  = dynamic_cast<PluginInsert*>(&_redirect)) == 0) {
  53                 fatal << _("redirect automation created for non-plugin") << endmsg;
  54                 /*NOTREACHED*/
  55         }
  56
  57         pi->plugin()->get_parameter_descriptor (_port, desc);
  58
  59         upper = desc.upper;
  60         lower = desc.lower;
  61         range = upper - lower;
  62
  63         if (desc.toggled) {
  64                 auto_is_boolean = true;
  65                 return;
  66         }
  67
  68         auto_is_boolean = false;
  69
  70         /* XXX set min/max for underlying curve ??? */
  71 }
  72
  73 string
  74 RedirectAutomationLine::get_verbose_cursor_string (float fraction)
  75 {
  76         char buf[32];
  77
  78         snprintf (buf, sizeof (buf), "%.2f", lower + (fraction * range));
  79         return buf;
  80 }
  81
  82 void
  83 RedirectAutomationLine::view_to_model_y (double& y)
  84 {
  85         y = lower + (y * range);
  86 }
  87
  88 void
  89 RedirectAutomationLine::model_to_view_y (double& y)
  90 {
  91         y = (y - lower) / range;
  92         y = max (0.0, y);
  93         y = min (y, 1.0);
  94 }
  95