Add option to limit automatable control parmaters

[ardour.git] / libs / ardour / gain_control.cc

diff --git a/libs/ardour/gain_control.cc b/libs/ardour/gain_control.cc
index e6154495a4a40cba3c5a88b7484d12547ebcbfb0..1813586e0935a49cf8e2aa177f9311f3a7a853df 100644 (file)
--- a/libs/ardour/gain_control.cc
+++ b/libs/ardour/gain_control.cc
@@ -21,6 +21,8 @@
 #include "pbd/convert.h"
 #include "pbd/strsplit.h"
 
+#include "evoral/Curve.hpp"
+
 #include "ardour/dB.h"
 #include "ardour/gain_control.h"
 #include "ardour/session.h"
@@ -38,49 +40,6 @@ GainControl::GainControl (Session& session, const Evoral::Parameter &param, boos
                                     param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol"),
                                     Controllable::GainLike)
 {
-       alist()->reset_default (1.0);
-
-       lower_db = accurate_coefficient_to_dB (_desc.lower);
-       range_db = accurate_coefficient_to_dB (_desc.upper) - lower_db;
-}
-
-double
-GainControl::internal_to_interface (double v) const
-{
-       if (_desc.type == GainAutomation) {
-               return gain_to_slider_position (v);
-       } else {
-               return (accurate_coefficient_to_dB (v) - lower_db) / range_db;
-       }
-}
-
-double
-GainControl::interface_to_internal (double v) const
-{
-       if (_desc.type == GainAutomation) {
-               return slider_position_to_gain (v);
-       } else {
-               return dB_to_coefficient (lower_db + v * range_db);
-       }
-}
-
-double
-GainControl::internal_to_user (double v) const
-{
-       return accurate_coefficient_to_dB (v);
-}
-
-double
-GainControl::user_to_internal (double u) const
-{
-       return dB_to_coefficient (u);
-}
-
-std::string
-GainControl::get_user_string () const
-{
-       char theBuf[32]; sprintf( theBuf, _("%3.1f dB"), accurate_coefficient_to_dB (get_value()));
-       return std::string(theBuf);
 }
 
 void
@@ -90,7 +49,7 @@ GainControl::inc_gain (gain_t factor)
         * ControlGroup::set_group_values().
         */
 
-       const float desired_gain = user_double();
+       const float desired_gain = get_value ();
 
        if (fabsf (desired_gain) < GAIN_COEFF_SMALL) {
                // really?! what's the idea here?
@@ -100,3 +59,23 @@ GainControl::inc_gain (gain_t factor)
        }
 }
 
+void
+GainControl::post_add_master (boost::shared_ptr<AutomationControl> m)
+{
+       if (m->get_value() == 0) {
+               /* master is at -inf, which forces this ctrl to -inf on assignment */
+               Changed (false, Controllable::NoGroup); /* EMIT SIGNAL */
+       }
+}
+
+bool
+GainControl::get_masters_curve_locked (samplepos_t start, samplepos_t end, float* vec, samplecnt_t veclen) const
+{
+       if (_masters.empty()) {
+               return list()->curve().rt_safe_get_vector (start, end, vec, veclen);
+       }
+       for (samplecnt_t i = 0; i < veclen; ++i) {
+               vec[i] = 1.f;
+       }
+       return SlavableAutomationControl::masters_curve_multiply (start, end, vec, veclen);
+}