missing part of lincoln's patch

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

diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index 19955d2530775a024a323045da78d971467bfe7a..efdd297f5e9bd531f5efa84e28a88f132d6048fc 100644 (file)
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2009 Paul Davis 
+    Copyright (C) 2009 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,6 +17,10 @@
 
 */
 
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
 #include "ardour/port.h"
 #include "ardour/audioengine.h"
 #include "pbd/failed_constructor.h"
@@ -30,8 +34,8 @@ using namespace std;
 using namespace ARDOUR;
 
 AudioEngine* Port::_engine = 0;
-nframes_t Port::_port_offset = 0;
 nframes_t Port::_buffer_size = 0;
+bool Port::_connecting_blocked = false;
 
 /** @param n Port short name */
 Port::Port (std::string const & n, DataType t, Flags f)
@@ -42,11 +46,11 @@ Port::Port (std::string const & n, DataType t, Flags f)
 
        /* Unfortunately we have to pass the DataType into this constructor so that we can
           create the right kind of JACK port; aside from this we'll use the virtual function type ()
-          to establish type. 
+          to establish type.
        */
 
        assert (_name.find_first_of (':') == std::string::npos);
-       
+
        if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
                throw failed_constructor ();
        }
@@ -95,8 +99,10 @@ Port::get_connections (std::vector<std::string> & c) const
                        c.push_back (jc[i]);
                        ++n;
                }
+
+               jack_free (jc);
        }
-       
+
        return n;
 }
 
@@ -109,13 +115,17 @@ Port::connect (std::string const & other)
        std::string const this_shrt = _engine->make_port_name_non_relative (_name);
 
        int r = 0;
-               
+
+       if (_connecting_blocked) {
+               return r;
+       }
+
        if (sends_output ()) {
                r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
        } else {
                r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
        }
-       
+
        if (r == 0) {
                _connections.insert (other);
        }
@@ -132,18 +142,18 @@ Port::disconnect (std::string const & other)
        std::string const this_shrt = _engine->make_port_name_non_relative (_name);
 
        int r = 0;
-       
+
        if (sends_output ()) {
                r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
        } else {
                r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
        }
-       
+
        if (r == 0) {
                _connections.erase (other);
        }
-       
-return r;
+
+        return r;
 }
 
 
@@ -196,22 +206,40 @@ Port::reset ()
 void
 Port::recompute_total_latency () const
 {
-#ifdef HAVE_JACK_RECOMPUTE_LATENCY     
-       jack_recompute_total_latency (_engine->jack (), _jack_port);
-#endif 
+#ifdef HAVE_JACK_RECOMPUTE_LATENCY
+       jack_client_t* jack = _engine->jack();
+
+       if (!jack) {
+               return;
+       }
+
+       jack_recompute_total_latency (jack, _jack_port);
+#endif
 }
 
 nframes_t
 Port::total_latency () const
 {
-       return jack_port_get_total_latency (_engine->jack (), _jack_port);
+       jack_client_t* jack = _engine->jack();
+
+       if (!jack) {
+               return 0;
+       }
+
+       return jack_port_get_total_latency (jack, _jack_port);
 }
 
 int
 Port::reestablish ()
 {
+       jack_client_t* jack = _engine->jack();
+
+       if (!jack) {
+               return -1;
+       }
+
        cerr << "RE-REGISTER: " << _name.c_str() << endl;
-       _jack_port = jack_port_register (_engine->jack(), _name.c_str(), type().to_jack_type(), _flags, 0);
+       _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
 
        if (_jack_port == 0) {
                PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
@@ -249,7 +277,7 @@ Port::set_name (std::string const & n)
        int const r = jack_port_set_name (_jack_port, n.c_str());
 
        if (r == 0) {
-               _name = n; 
+               _name = n;
        }
 
        return r;
@@ -267,3 +295,25 @@ Port::set_latency (nframes_t n)
        jack_port_set_latency (_jack_port, n);
 }
 
+bool
+Port::physically_connected () const
+{
+       const char** jc = jack_port_get_connections (_jack_port);
+
+       if (jc) {
+               for (int i = 0; jc[i]; ++i) {
+
+                        jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
+                        
+                        if (port && (jack_port_flags (port) & JackPortIsPhysical)) {
+                                jack_free (jc);
+                                return true;
+                        }
+               }
+                
+               jack_free (jc);
+       }
+
+        return false;
+}
+