extensive changes to PresentationInfo API

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

diff --git a/libs/ardour/send.cc b/libs/ardour/send.cc
index 2167c4319c4f5ff8209e9d6c40e46ad1d5868b20..8f7afc7c8fc4d5ab7e5cf5865e721fee86703fd1 100644 (file)
--- a/libs/ardour/send.cc
+++ b/libs/ardour/send.cc
@@ -21,11 +21,12 @@
 #include <algorithm>
 
 #include "pbd/xml++.h"
-#include "pbd/boost_debug.h"
 
 #include "ardour/amp.h"
+#include "ardour/boost_debug.h"
 #include "ardour/buffer_set.h"
 #include "ardour/debug.h"
+#include "ardour/gain_control.h"
 #include "ardour/io.h"
 #include "ardour/meter.h"
 #include "ardour/panner_shell.h"
@@ -48,7 +49,7 @@ string
 Send::name_and_id_new_send (Session& s, Role r, uint32_t& bitslot, bool ignore_bitslot)
 {
        if (ignore_bitslot) {
-               /* this happens during initial construction of sends from XML, 
+               /* this happens during initial construction of sends from XML,
                   before they get ::set_state() called. lets not worry about
                   it.
                */
@@ -68,7 +69,7 @@ Send::name_and_id_new_send (Session& s, Role r, uint32_t& bitslot, bool ignore_b
                abort(); /*NOTREACHED*/
                return string();
        }
-       
+
 }
 
 Send::Send (Session& s, boost::shared_ptr<Pannable> p, boost::shared_ptr<MuteMaster> mm, Role r, bool ignore_bitslot)
@@ -76,6 +77,7 @@ Send::Send (Session& s, boost::shared_ptr<Pannable> p, boost::shared_ptr<MuteMas
        , _metering (false)
        , _delay_in (0)
        , _delay_out (0)
+       , _remove_on_disconnect (false)
 {
        if (_role == Listen) {
                /* we don't need to do this but it keeps things looking clean
@@ -86,15 +88,21 @@ Send::Send (Session& s, boost::shared_ptr<Pannable> p, boost::shared_ptr<MuteMas
 
        //boost_debug_shared_ptr_mark_interesting (this, "send");
 
+       boost::shared_ptr<AutomationList> gl (new AutomationList (Evoral::Parameter (GainAutomation)));
+       _gain_control = boost::shared_ptr<GainControl> (new GainControl (_session, Evoral::Parameter(GainAutomation), gl));
+       add_control (_gain_control);
+
+       _amp.reset (new Amp (_session, _("Fader"), _gain_control, true));
        _meter.reset (new PeakMeter (_session, name()));
 
        _delayline.reset (new DelayLine (_session, name()));
 
-       add_control (_amp->gain_control ());
-
        if (panner_shell()) {
                panner_shell()->Changed.connect_same_thread (*this, boost::bind (&Send::panshell_changed, this));
        }
+       if (_output) {
+               _output->changed.connect_same_thread (*this, boost::bind (&Send::snd_output_changed, this, _1, _2));
+       }
 }
 
 Send::~Send ()
@@ -173,7 +181,7 @@ Send::run (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, pframe
        sendbufs.read_from (bufs, nframes);
        assert(sendbufs.count() == bufs.count());
 
-       /* automatable gain control */
+       /* gain control */
 
        _amp->set_gain_automation_buffer (_session.send_gain_automation_buffer ());
        _amp->setup_gain_automation (start_frame, end_frame, nframes);
@@ -217,6 +225,8 @@ Send::state (bool full)
                node.add_property ("bitslot", buf);
        }
 
+       node.add_property("selfdestruct", _remove_on_disconnect ? "yes" : "no");
+
        node.add_child_nocopy (_amp->state (full));
 
        return node;
@@ -229,7 +239,7 @@ Send::set_state (const XMLNode& node, int version)
                return set_state_2X (node, version);
        }
 
-       const XMLProperty* prop;
+       XMLProperty const * prop;
 
        Delivery::set_state (node, version);
 
@@ -238,7 +248,7 @@ Send::set_state (const XMLNode& node, int version)
                /* don't try to reset bitslot if there is a node for it already: this can cause
                   issues with the session's accounting of send ID's
                */
-               
+
                if ((prop = node.property ("bitslot")) == 0) {
                        if (_role == Delivery::Aux) {
                                _bitslot = _session.next_aux_send_id ();
@@ -263,7 +273,11 @@ Send::set_state (const XMLNode& node, int version)
                        }
                }
        }
-       
+
+       if ((prop = node.property (X_("selfdestruct"))) != 0) {
+               _remove_on_disconnect = string_is_affirmative (prop->value());
+       }
+
        XMLNodeList nlist = node.children();
        for (XMLNodeIterator i = nlist.begin(); i != nlist.end(); ++i) {
                if ((*i)->name() == X_("Processor")) {
@@ -395,9 +409,18 @@ Send::display_to_user () const
 }
 
 string
-Send::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+Send::value_as_string (boost::shared_ptr<const AutomationControl> ac) const
 {
        return _amp->value_as_string (ac);
 }
 
-       
+void
+Send::snd_output_changed (IOChange change, void* /*src*/)
+{
+       if (change.type & IOChange::ConnectionsChanged) {
+               if (!_output->connected() && _remove_on_disconnect) {
+                       _remove_on_disconnect = false;
+                       SelfDestruct (); /* EMIT SIGNAL */
+               }
+       }
+}