2 Copyright (C) 2009 Paul Davis
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.
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.
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.
20 #ifndef __ardour_port_h__
21 #define __ardour_port_h__
23 #include "libardour-config.h"
28 #include <boost/utility.hpp>
29 #include "pbd/signals.h"
31 #include "ardour/data_type.h"
32 #include "ardour/port_engine.h"
33 #include "ardour/libardour_visibility.h"
34 #include "ardour/types.h"
41 class LIBARDOUR_API Port : public boost::noncopyable
46 static void set_connecting_blocked( bool yn ) {
47 _connecting_blocked = yn;
49 static bool connecting_blocked() {
50 return _connecting_blocked;
53 /** @return Port short name */
54 std::string name () const {
58 int set_name (std::string const &);
61 PortFlags flags () const {
65 /** @return true if this Port receives input, otherwise false */
66 bool receives_input () const {
67 return _flags & IsInput;
70 /** @return true if this Port sends output, otherwise false */
71 bool sends_output () const {
72 return _flags & IsOutput;
75 bool connected () const;
76 int disconnect_all ();
77 int get_connections (std::vector<std::string> &) const;
79 /* connection by name */
80 bool connected_to (std::string const &) const;
81 int connect (std::string const &);
82 int disconnect (std::string const &);
84 /* connection by Port* */
85 bool connected_to (Port *) const;
86 virtual int connect (Port *);
87 int disconnect (Port *);
89 void request_input_monitoring (bool);
90 void ensure_input_monitoring (bool);
91 bool monitoring_input () const;
95 bool last_monitor() const { return _last_monitor; }
96 void set_last_monitor (bool yn) { _last_monitor = yn; }
98 PortEngine::PortHandle port_handle() { return _port_handle; }
100 void get_connected_latency_range (LatencyRange& range, bool playback) const;
102 void set_private_latency_range (LatencyRange& range, bool playback);
103 const LatencyRange& private_latency_range (bool playback) const;
105 void set_public_latency_range (LatencyRange& range, bool playback) const;
106 LatencyRange public_latency_range (bool playback) const;
108 virtual void reset ();
110 virtual DataType type () const = 0;
111 virtual void cycle_start (pframes_t);
112 virtual void cycle_end (pframes_t) = 0;
113 virtual void cycle_split () = 0;
114 virtual Buffer& get_buffer (pframes_t nframes) = 0;
115 virtual void flush_buffers (pframes_t /*nframes*/) {}
116 virtual void transport_stopped () {}
117 virtual void realtime_locate () {}
119 bool physically_connected () const;
121 PBD::Signal1<void,bool> MonitorInputChanged;
122 static PBD::Signal2<void,boost::shared_ptr<Port>,boost::shared_ptr<Port> > PostDisconnect;
123 static PBD::Signal0<void> PortDrop;
125 static void set_cycle_framecnt (pframes_t n) {
128 static framecnt_t port_offset() { return _global_port_buffer_offset; }
129 static void set_global_port_buffer_offset (pframes_t off) {
130 _global_port_buffer_offset = off;
132 static void increment_global_port_buffer_offset (pframes_t n) {
133 _global_port_buffer_offset += n;
136 virtual void increment_port_buffer_offset (pframes_t n);
138 virtual XMLNode& get_state (void) const;
139 virtual int set_state (const XMLNode&, int version);
141 static std::string state_node_name;
145 Port (std::string const &, DataType, PortFlags);
147 PortEngine::PortHandle _port_handle;
149 static bool _connecting_blocked;
150 static pframes_t _global_port_buffer_offset; /* access only from process() tree */
151 static pframes_t _cycle_nframes; /* access only from process() tree */
153 framecnt_t _port_buffer_offset; /* access only from process() tree */
155 LatencyRange _private_playback_latency;
156 LatencyRange _private_capture_latency;
159 std::string _name; ///< port short name
160 PortFlags _flags; ///< flags
163 /** ports that we are connected to, kept so that we can
164 reconnect to the backend when required
166 std::set<std::string> _connections;
169 PBD::ScopedConnection drop_connection;
174 #endif /* __ardour_port_h__ */