389 lines
11 KiB
C++
389 lines
11 KiB
C++
// fg_io.cxx -- higher level I/O channel management routines
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//
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// Written by Curtis Olson, started November 1999.
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//
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// Copyright (C) 1999 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <simgear/compiler.h>
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#include <cstdlib> // atoi()
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#include <string>
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#include <simgear/debug/logstream.hxx>
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#include <simgear/io/iochannel.hxx>
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#include <simgear/io/sg_file.hxx>
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#include <simgear/io/sg_serial.hxx>
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#include <simgear/io/sg_socket.hxx>
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#include <simgear/io/sg_socket_udp.hxx>
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#include <simgear/math/sg_types.hxx>
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#include <simgear/timing/timestamp.hxx>
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#include <simgear/misc/strutils.hxx>
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#include <Network/protocol.hxx>
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#include <Network/ATC-Main.hxx>
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#include <Network/atlas.hxx>
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#include <Network/AV400.hxx>
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#include <Network/AV400Sim.hxx>
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#include <Network/garmin.hxx>
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#include <Network/httpd.hxx>
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#ifdef FG_JPEG_SERVER
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# include <Network/jpg-httpd.hxx>
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#endif
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#include <Network/joyclient.hxx>
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#include <Network/jsclient.hxx>
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#include <Network/native.hxx>
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#include <Network/native_ctrls.hxx>
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#include <Network/native_fdm.hxx>
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#include <Network/native_gui.hxx>
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#include <Network/opengc.hxx>
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#include <Network/nmea.hxx>
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#include <Network/props.hxx>
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#include <Network/pve.hxx>
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#include <Network/ray.hxx>
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#include <Network/rul.hxx>
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#include <Network/generic.hxx>
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#include <Network/multiplay.hxx>
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#include "globals.hxx"
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#include "fg_io.hxx"
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using std::atoi;
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using std::string;
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FGIO::FGIO()
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{
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}
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#include <algorithm>
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using std::for_each;
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static void delete_ptr( FGProtocol* p ) { delete p; }
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FGIO::~FGIO()
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{
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shutdown_all();
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for_each( io_channels.begin(), io_channels.end(), delete_ptr );
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}
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// configure a port based on the config string
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FGProtocol*
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FGIO::parse_port_config( const string& config )
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{
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SG_LOG( SG_IO, SG_INFO, "Parse I/O channel request: " << config );
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vector<string> tokens = simgear::strutils::split( config, "," );
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if (tokens.empty())
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{
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SG_LOG( SG_IO, SG_ALERT,
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"Port configuration error: empty config string" );
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return 0;
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}
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string protocol = tokens[0];
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SG_LOG( SG_IO, SG_INFO, " protocol = " << protocol );
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FGProtocol *io = 0;
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try
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{
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if ( protocol == "atcsim" ) {
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FGATCMain *atcsim = new FGATCMain;
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atcsim->set_hz( 30 );
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if ( tokens.size() != 6 ) {
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SG_LOG( SG_IO, SG_ALERT, "Usage: --atcsim=[no-]pedals,"
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<< "input0_config,input1_config,"
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<< "output0_config,output1_config,file.nas" );
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delete atcsim;
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return NULL;
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}
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if ( tokens[1] == "no-pedals" ) {
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fgSetBool( "/input/atcsim/ignore-pedal-controls", true );
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} else {
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fgSetBool( "/input/atcsim/ignore-pedal-controls", false );
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}
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atcsim->set_path_names(tokens[2], tokens[3], tokens[4], tokens[5]);
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return atcsim;
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} else if ( protocol == "atlas" ) {
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FGAtlas *atlas = new FGAtlas;
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io = atlas;
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} else if ( protocol == "opengc" ) {
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// char wait;
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// printf("Parsed opengc\n"); cin >> wait;
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FGOpenGC *opengc = new FGOpenGC;
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io = opengc;
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} else if ( protocol == "AV400" ) {
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FGAV400 *av400 = new FGAV400;
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io = av400;
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} else if ( protocol == "AV400Sim" ) {
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FGAV400Sim *av400sim = new FGAV400Sim;
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io = av400sim;
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} else if ( protocol == "garmin" ) {
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FGGarmin *garmin = new FGGarmin;
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io = garmin;
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} else if ( protocol == "httpd" ) {
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// determine port
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string port = tokens[1];
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return new FGHttpd( atoi(port.c_str()) );
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#ifdef FG_JPEG_SERVER
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} else if ( protocol == "jpg-httpd" ) {
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// determine port
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string port = tokens[1];
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return new FGJpegHttpd( atoi(port.c_str()) );
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#endif
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} else if ( protocol == "joyclient" ) {
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FGJoyClient *joyclient = new FGJoyClient;
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io = joyclient;
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} else if ( protocol == "jsclient" ) {
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FGJsClient *jsclient = new FGJsClient;
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io = jsclient;
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} else if ( protocol == "native" ) {
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FGNative *native = new FGNative;
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io = native;
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} else if ( protocol == "native-ctrls" ) {
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FGNativeCtrls *native_ctrls = new FGNativeCtrls;
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io = native_ctrls;
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} else if ( protocol == "native-fdm" ) {
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FGNativeFDM *native_fdm = new FGNativeFDM;
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io = native_fdm;
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} else if ( protocol == "native-gui" ) {
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FGNativeGUI *net_gui = new FGNativeGUI;
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io = net_gui;
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} else if ( protocol == "nmea" ) {
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FGNMEA *nmea = new FGNMEA;
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io = nmea;
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} else if ( protocol == "props" || protocol == "telnet" ) {
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io = new FGProps( tokens );
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return io;
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} else if ( protocol == "pve" ) {
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FGPVE *pve = new FGPVE;
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io = pve;
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} else if ( protocol == "ray" ) {
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FGRAY *ray = new FGRAY;
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io = ray;
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} else if ( protocol == "rul" ) {
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FGRUL *rul = new FGRUL;
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io = rul;
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} else if ( protocol == "generic" ) {
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int configToken;
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if (tokens[1] == "socket")
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configToken = 7;
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else if (tokens[1] == "file")
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configToken = 5;
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else
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configToken = 6;
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FGGeneric *generic = new FGGeneric( tokens[configToken] );
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io = generic;
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} else if ( protocol == "multiplay" ) {
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if ( tokens.size() != 5 ) {
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SG_LOG( SG_IO, SG_ALERT, "Ignoring invalid --multiplay option "
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"(4 arguments expected: --multiplay=dir,hz,hostname,port)" );
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return NULL;
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}
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string dir = tokens[1];
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string rate = tokens[2];
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string host = tokens[3];
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string port = tokens[4];
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return new FGMultiplay(dir, atoi(rate.c_str()), host, atoi(port.c_str()));
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} else {
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return NULL;
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}
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}
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catch (FGProtocolConfigError& err)
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{
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SG_LOG( SG_IO, SG_ALERT, "Port configuration error: " << err.what() );
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delete io;
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return 0;
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}
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if (tokens.size() < 3) {
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SG_LOG( SG_IO, SG_ALERT, "Incompatible number of network arguments.");
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return NULL;
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}
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string medium = tokens[1];
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SG_LOG( SG_IO, SG_INFO, " medium = " << medium );
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string direction = tokens[2];
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io->set_direction( direction );
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SG_LOG( SG_IO, SG_INFO, " direction = " << direction );
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string hertz_str = tokens[3];
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double hertz = atof( hertz_str.c_str() );
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io->set_hz( hertz );
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SG_LOG( SG_IO, SG_INFO, " hertz = " << hertz );
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if ( medium == "serial" ) {
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if ( tokens.size() < 5) {
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SG_LOG( SG_IO, SG_ALERT, "Incompatible number of arguments for serial communications.");
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return NULL;
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}
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// device name
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string device = tokens[4];
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SG_LOG( SG_IO, SG_INFO, " device = " << device );
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// baud
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string baud = tokens[5];
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SG_LOG( SG_IO, SG_INFO, " baud = " << baud );
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SGSerial *ch = new SGSerial( device, baud );
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io->set_io_channel( ch );
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} else if ( medium == "file" ) {
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// file name
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if ( tokens.size() < 4) {
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SG_LOG( SG_IO, SG_ALERT, "Incompatible number of arguments for file I/O.");
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return NULL;
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}
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string file = tokens[4];
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SG_LOG( SG_IO, SG_INFO, " file name = " << file );
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int repeat = 1;
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if (tokens.size() >= 7 && tokens[6] == "repeat") {
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if (tokens.size() >= 8) {
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repeat = atoi(tokens[7].c_str());
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FGGeneric* generic = dynamic_cast<FGGeneric*>(io);
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if (generic)
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generic->setExitOnError(true);
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} else {
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repeat = -1;
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}
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}
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SGFile *ch = new SGFile( file, repeat );
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io->set_io_channel( ch );
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} else if ( medium == "socket" ) {
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if ( tokens.size() < 6) {
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SG_LOG( SG_IO, SG_ALERT, "Incompatible number of arguments for socket communications.");
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return NULL;
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}
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string hostname = tokens[4];
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string port = tokens[5];
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string style = tokens[6];
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SG_LOG( SG_IO, SG_INFO, " hostname = " << hostname );
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SG_LOG( SG_IO, SG_INFO, " port = " << port );
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SG_LOG( SG_IO, SG_INFO, " style = " << style );
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io->set_io_channel( new SGSocket( hostname, port, style ) );
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}
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return io;
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}
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// step through the port config streams (from fgOPTIONS) and setup
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// serial port channels for each
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void
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FGIO::init()
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{
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// SG_LOG( SG_IO, SG_INFO, "I/O Channel initialization, " <<
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// globals->get_channel_options_list()->size() << " requests." );
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FGProtocol *p;
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// we could almost do this in a single step except pushing a valid
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// port onto the port list copies the structure and destroys the
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// original, which closes the port and frees up the fd ... doh!!!
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// parse the configuration strings and store the results in the
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// appropriate FGIOChannel structures
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typedef vector<string> container;
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container::iterator i = globals->get_channel_options_list()->begin();
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container::iterator end = globals->get_channel_options_list()->end();
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for (; i != end; ++i )
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{
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p = parse_port_config( *i );
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if ( p != NULL ) {
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p->open();
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io_channels.push_back( p );
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if ( !p->is_enabled() ) {
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SG_LOG( SG_IO, SG_ALERT, "I/O Channel config failed." );
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exit(-1);
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}
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} else {
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SG_LOG( SG_IO, SG_INFO, "I/O Channel parse failed." );
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}
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}
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}
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// process any IO channel work
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void
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FGIO::update( double delta_time_sec )
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{
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// cout << "processing I/O channels" << endl;
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// cout << " Elapsed time = " << delta_time_sec << endl;
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typedef vector< FGProtocol* > container;
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container::iterator i = io_channels.begin();
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container::iterator end = io_channels.end();
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for (; i != end; ++i ) {
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FGProtocol* p = *i;
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if ( p->is_enabled() ) {
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p->dec_count_down( delta_time_sec );
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double dt = 1 / p->get_hz();
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if ( p->get_count_down() < 0.33 * dt ) {
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p->process();
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p->inc_count();
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while ( p->get_count_down() < 0.33 * dt ) {
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p->inc_count_down( dt );
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}
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// double ave = elapsed_time / p->get_count();
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// cout << " ave rate = " << ave << endl;
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}
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}
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}
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}
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void
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FGIO::shutdown_all() {
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FGProtocol *p;
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// cout << "shutting down all I/O channels" << endl;
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typedef vector< FGProtocol* > container;
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container::iterator i = io_channels.begin();
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container::iterator end = io_channels.end();
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for (; i != end; ++i )
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{
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p = *i;
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if ( p->is_enabled() ) {
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p->close();
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}
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}
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}
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void
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FGIO::bind()
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{
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}
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void
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FGIO::unbind()
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{
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}
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