1 // fg_io.cxx -- higher level I/O channel management routines
3 // Written by Curtis Olson, started November 1999.
5 // Copyright (C) 1999 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <simgear/compiler.h>
26 #include <stdlib.h> // atoi()
30 #include <simgear/debug/logstream.hxx>
31 #include <simgear/io/iochannel.hxx>
32 #include <simgear/io/sg_file.hxx>
33 #include <simgear/io/sg_serial.hxx>
34 #include <simgear/io/sg_socket.hxx>
35 #include <simgear/io/sg_socket_udp.hxx>
36 #include <simgear/math/sg_types.hxx>
37 #include <simgear/timing/timestamp.hxx>
38 #include <simgear/misc/strutils.hxx>
40 #include <Network/protocol.hxx>
41 #include <Network/atc610x.hxx>
42 #include <Network/atlas.hxx>
43 #include <Network/garmin.hxx>
44 #include <Network/httpd.hxx>
46 # include <Network/jpg-httpd.hxx>
48 #include <Network/joyclient.hxx>
49 #include <Network/native.hxx>
50 #include <Network/native_ctrls.hxx>
51 #include <Network/native_fdm.hxx>
52 #include <Network/native_gui.hxx>
53 #include <Network/opengc.hxx>
54 #include <Network/nmea.hxx>
55 #include <Network/props.hxx>
56 #include <Network/pve.hxx>
57 #include <Network/ray.hxx>
58 #include <Network/rul.hxx>
60 #include "globals.hxx"
70 #include STL_ALGORITHM
71 SG_USING_STD(for_each);
73 static void delete_ptr( FGProtocol* p ) { delete p; }
78 for_each( io_channels.begin(), io_channels.end(), delete_ptr );
82 // configure a port based on the config string
84 FGIO::parse_port_config( const string& config )
86 SG_LOG( SG_IO, SG_INFO, "Parse I/O channel request: " << config );
88 vector<string> tokens = simgear::strutils::split( config, "," );
91 SG_LOG( SG_IO, SG_ALERT,
92 "Port configuration error: empty config string" );
96 string protocol = tokens[0];
97 SG_LOG( SG_IO, SG_INFO, " protocol = " << protocol );
103 if ( protocol == "atc610x" ) {
104 FGATC610x *atc610x = new FGATC610x;
105 atc610x->set_hz( 30 );
107 } else if ( protocol == "atlas" ) {
108 FGAtlas *atlas = new FGAtlas;
110 } else if ( protocol == "opengc" ) {
112 // printf("Parsed opengc\n"); cin >> wait;
113 FGOpenGC *opengc = new FGOpenGC;
115 } else if ( protocol == "garmin" ) {
116 FGGarmin *garmin = new FGGarmin;
118 } else if ( protocol == "httpd" ) {
120 string port = tokens[1];
121 return new FGHttpd( atoi(port.c_str()) );
122 #ifdef FG_JPEG_SERVER
123 } else if ( protocol == "jpg-httpd" ) {
125 string port = tokens[1];
126 return new FGJpegHttpd( atoi(port.c_str()) );
128 } else if ( protocol == "joyclient" ) {
129 FGJoyClient *joyclient = new FGJoyClient;
131 } else if ( protocol == "native" ) {
132 FGNative *native = new FGNative;
134 } else if ( protocol == "native-ctrls" ) {
135 FGNativeCtrls *native_ctrls = new FGNativeCtrls;
137 } else if ( protocol == "native-fdm" ) {
138 FGNativeFDM *native_fdm = new FGNativeFDM;
140 } else if ( protocol == "native-gui" ) {
141 FGNativeGUI *net_gui = new FGNativeGUI;
143 } else if ( protocol == "nmea" ) {
144 FGNMEA *nmea = new FGNMEA;
146 } else if ( protocol == "props" || protocol == "telnet" ) {
147 io = new FGProps( tokens );
149 } else if ( protocol == "pve" ) {
150 FGPVE *pve = new FGPVE;
152 } else if ( protocol == "ray" ) {
153 FGRAY *ray = new FGRAY;
155 } else if ( protocol == "rul" ) {
156 FGRUL *rul = new FGRUL;
162 catch (FGProtocolConfigError& err)
164 SG_LOG( SG_IO, SG_ALERT, "Port configuration error: " << err.what() );
169 string medium = tokens[1];
170 SG_LOG( SG_IO, SG_INFO, " medium = " << medium );
172 string direction = tokens[2];
173 io->set_direction( direction );
174 SG_LOG( SG_IO, SG_INFO, " direction = " << direction );
176 string hertz_str = tokens[3];
177 double hertz = atof( hertz_str.c_str() );
179 SG_LOG( SG_IO, SG_INFO, " hertz = " << hertz );
181 if ( medium == "serial" ) {
183 string device = tokens[4];
184 SG_LOG( SG_IO, SG_INFO, " device = " << device );
187 string baud = tokens[5];
188 SG_LOG( SG_IO, SG_INFO, " baud = " << baud );
190 SGSerial *ch = new SGSerial( device, baud );
191 io->set_io_channel( ch );
192 } else if ( medium == "file" ) {
194 string file = tokens[4];
195 SG_LOG( SG_IO, SG_INFO, " file name = " << file );
197 SGFile *ch = new SGFile( file );
198 io->set_io_channel( ch );
199 } else if ( medium == "socket" ) {
200 string hostname = tokens[4];
201 string port = tokens[5];
202 string style = tokens[6];
204 SG_LOG( SG_IO, SG_INFO, " hostname = " << hostname );
205 SG_LOG( SG_IO, SG_INFO, " port = " << port );
206 SG_LOG( SG_IO, SG_INFO, " style = " << style );
208 io->set_io_channel( new SGSocket( hostname, port, style ) );
215 // step through the port config streams (from fgOPTIONS) and setup
216 // serial port channels for each
220 // SG_LOG( SG_IO, SG_INFO, "I/O Channel initialization, " <<
221 // globals->get_channel_options_list()->size() << " requests." );
225 // we could almost do this in a single step except pushing a valid
226 // port onto the port list copies the structure and destroys the
227 // original, which closes the port and frees up the fd ... doh!!!
229 // parse the configuration strings and store the results in the
230 // appropriate FGIOChannel structures
231 typedef vector<string> container;
232 container::iterator i = globals->get_channel_options_list()->begin();
233 container::iterator end = globals->get_channel_options_list()->end();
234 for (; i != end; ++i )
236 p = parse_port_config( *i );
239 io_channels.push_back( p );
240 if ( !p->is_enabled() ) {
241 SG_LOG( SG_IO, SG_ALERT, "I/O Channel config failed." );
245 SG_LOG( SG_IO, SG_INFO, "I/O Channel parse failed." );
251 // process any serial port work
253 FGIO::update( double delta_time_sec )
255 // cout << "processing I/O channels" << endl;
257 // SGTimeStamp current_time;
258 // current_time.stamp();
259 // static SGTimeStamp start_time = current_time;
260 // double elapsed_time = (current_time - start_time) / 1000000.0;
261 // cout << " Elapsed time = " << elapsed_time << endl;
263 typedef vector< FGProtocol* > container;
264 container::iterator i = io_channels.begin();
265 container::iterator end = io_channels.end();
266 for (; i != end; ++i ) {
269 if ( p->is_enabled() ) {
270 p->dec_count_down( delta_time_sec );
271 double dt = 1 / p->get_hz();
272 while ( p->get_count_down() < 0.33 * dt ) {
274 p->inc_count_down( dt );
277 // double ave = elapsed_time / p->get_count();
278 // cout << " ave rate = " << ave << endl;
285 FGIO::shutdown_all() {
288 // cout << "processing I/O channels" << endl;
290 typedef vector< FGProtocol* > container;
291 container::iterator i = io_channels.begin();
292 container::iterator end = io_channels.end();
293 for (; i != end; ++i )
297 if ( p->is_enabled() ) {