2 Copyright (C) 2002 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.
21 #ifndef __ardour_port_h__
22 #define __ardour_port_h__
24 #include <sigc++/signal.h>
25 #include <pbd/failed_constructor.h>
26 #include <ardour/ardour.h>
27 #include <jack/jack.h>
33 class Port : public sigc::trackable {
39 Sample *get_buffer (jack_nframes_t nframes) {
40 if (_flags & JackPortIsOutput) {
43 return (Sample *) jack_port_get_buffer (_port, nframes);
47 void reset_buffer () {
48 if (_flags & JackPortIsOutput) {
49 _buffer = (Sample *) jack_port_get_buffer (_port, 0);
51 _buffer = 0; /* catch illegal attempts to use it */
60 std::string short_name() {
61 return jack_port_short_name (_port);
64 int set_name (std::string str);
66 JackPortFlags flags() const {
70 bool is_mine (jack_client_t *client) {
71 return jack_port_is_mine (client, _port);
74 const char* type() const {
78 int connected () const {
79 return jack_port_connected (_port);
82 bool connected_to (const std::string& portname) const {
83 return jack_port_connected_to (_port, portname.c_str());
86 const char ** get_connections () const {
87 return jack_port_get_connections (_port);
96 void reset_peak_meter () {
100 void reset_meters () {
105 void enable_metering() {
109 void disable_metering () {
110 if (_metering) { _metering--; }
113 float peak_db() const { return _peak_db; }
114 jack_default_audio_sample_t peak() const { return _peak; }
116 uint32_t short_overs () const { return _short_overs; }
117 uint32_t long_overs () const { return _long_overs; }
119 static void set_short_over_length (jack_nframes_t);
120 static void set_long_over_length (jack_nframes_t);
122 bool receives_input() const {
123 return _flags & JackPortIsInput;
126 bool sends_output () const {
127 return _flags & JackPortIsOutput;
130 bool monitoring_input () const {
131 return jack_port_monitoring_input (_port);
134 bool can_monitor () const {
135 return _flags & JackPortCanMonitor;
138 void ensure_monitor_input (bool yn) {
139 jack_port_request_monitor (_port, yn);
142 void request_monitor_input (bool yn) {
143 jack_port_request_monitor (_port, yn);
146 jack_nframes_t latency () const {
147 return jack_port_get_latency (_port);
150 void set_latency (jack_nframes_t nframes) {
151 jack_port_set_latency (_port, nframes);
154 sigc::signal<void,bool> MonitorInputChanged;
155 sigc::signal<void,bool> ClockSyncChanged;
157 bool is_silent() const { return _silent; }
159 /** Assumes that the port is an audio output port */
160 void silence (jack_nframes_t nframes, jack_nframes_t offset) {
162 memset (_buffer + offset, 0, sizeof (Sample) * nframes);
164 /* XXX this isn't really true, but i am not sure
165 how to set this correctly. we really just
166 want to set it true when the entire port
167 buffer has been overrwritten.
174 void mark_silence (bool yn) {
179 friend class AudioEngine;
181 Port (jack_port_t *port);
184 /* engine isn't supposed to below here */
188 /* cache these 3 from JACK so that we can
189 access them for reconnecting.
192 JackPortFlags _flags;
196 bool _last_monitor : 1;
199 jack_nframes_t _overlen;
200 jack_default_audio_sample_t _peak;
202 uint32_t _short_overs;
203 uint32_t _long_overs;
204 unsigned short _metering;
206 static jack_nframes_t _long_over_length;
207 static jack_nframes_t _short_over_length;
210 }; /* namespace ARDOUR */
212 #endif /* __ardour_port_h__ */