root/trunk/libffado/tests/test-dbus.cpp

Revision 575, 4.0 kB (checked in by ppalmers, 15 years ago)

- Fixed bug in dbus c++ bindings
- First attempt at a decoupled control interface. [WIP]


The src/libcontrol/* elements are the ones that should be
subclassed to implement control elements on the FFADODevice
side.

The tests/controlserver.* files contain some code that
interfaces the DBus calls to these libcontrol elements. The
DBus classes allow for introspection and path discovery,
such that we don't have to care about that anymore.

In the end it should be fairly easy to write another 'backend'
to replace the current DBus one, e.g. to implement OSC support
or MIDI support. (Should we ever want that)

Note that there is no connection between ffado and dbus yet,
this code is merely to experiment with the Control/DBus infra-
structure. Once that is sort-of working, connecting ffado to
this infrastructure is a matter of subclassing the Control::*
classes, creating them on discovery and putting them into one
Container::* that is passed on to the DBus handlers.

Line 
1 /*
2  * Copyright (C) 2007 by Pieter Palmers
3  *
4  * This file is part of FFADO
5  * FFADO = Free Firewire (pro-)audio drivers for linux
6  *
7  * FFADO is based upon FreeBoB
8  *
9  * FFADO is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  * FFADO is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with FFADO; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA.
22  *
23  */
24
25 #include <argp.h>
26 #include <stdlib.h>
27 #include <iostream>
28 #include <signal.h>
29
30 #include "controlclient.h"
31 #include <dbus-c++/dbus.h>
32
33 using namespace std;
34
35 DECLARE_GLOBAL_DEBUG_MODULE;
36
37 ////////////////////////////////////////////////
38 // arg parsing
39 ////////////////////////////////////////////////
40 const char *argp_program_version = "test-dbus 0.1";
41 const char *argp_program_bug_address = "<ffado-devel@lists.sf.net>";
42 static char doc[] = "test-dbus -- test client for the DBUS interface";
43 static char args_doc[] = "";
44 static struct argp_option options[] = {
45     {"verbose",   'v', 0,           0,  "Produce verbose output" },
46    { 0 }
47 };
48
49 struct arguments
50 {
51     arguments()
52         : verbose( false )
53         {
54             args[0] = 0;
55         }
56
57     char* args[50];
58     bool  verbose;
59 } arguments;
60
61 // Parse a single option.
62 static error_t
63 parse_opt( int key, char* arg, struct argp_state* state )
64 {
65     // Get the input argument from `argp_parse', which we
66     // know is a pointer to our arguments structure.
67     struct arguments* arguments = ( struct arguments* ) state->input;
68
69 //     char* tail;
70     switch (key) {
71     case 'v':
72         arguments->verbose = true;
73         break;
74     case ARGP_KEY_ARG:
75         if (state->arg_num >= 50) {
76             // Too many arguments.
77             argp_usage (state);
78         }
79         arguments->args[state->arg_num] = arg;
80         break;
81     case ARGP_KEY_END:
82         break;
83     default:
84         return ARGP_ERR_UNKNOWN;
85     }
86     return 0;
87 }
88
89 static struct argp argp = { options, parse_opt, args_doc, doc };
90
91 ///////////////////////////
92 // main
93 //////////////////////////
94
95 DBus::BusDispatcher dispatcher;
96 static const int THREADS = 1;
97 static bool spin = true;
98
99 void leave( int sig )
100 {
101     spin = false;
102     dispatcher.leave();
103 }
104
105 void* worker_thread( void* )
106 {
107     DBus::Connection conn = DBus::Connection::SessionBus();
108
109     DBusControl::ContignousClient client(conn, SERVER_PATH, SERVER_NAME);
110
111     int i=0;
112     while(spin)
113     {
114         try {
115             client.setValue(i++);
116         } catch(...) {
117             cout << "error on setValue()\n";
118         };
119 //         try {
120 //             std::map< DBus::String, DBus::String > info = client.Info();
121 //             cout << info["testset1"] << " - " << info["testset2"] << std::endl;
122 //         } catch(...) {
123 //             cout << "error on Info()\n";
124 //         };
125
126         cout << "* " << i << "*\n";
127         sleep(1);
128     }
129
130     return NULL;
131 }
132
133 void run_client_tests() {
134     DBus::default_dispatcher = &dispatcher;
135
136     pthread_t thread;
137
138     pthread_create(&thread, NULL, worker_thread, NULL);
139
140     dispatcher.enter();
141
142     pthread_join(thread, NULL);
143 }
144
145 int
146 main(int argc, char **argv)
147 {
148     signal(SIGTERM, leave);
149     signal(SIGINT, leave);
150    
151     setDebugLevel(DEBUG_LEVEL_VERBOSE);
152    
153     // arg parsing
154     argp_parse (&argp, argc, argv, 0, 0, &arguments);
155
156     errno = 0;
157 //     char* tail;
158    
159     if (errno) {
160         perror("argument parsing failed:");
161         return -1;
162     }
163
164     debugOutput(DEBUG_LEVEL_NORMAL, "DBUS test application\n");
165
166     DBus::_init_threading();
167
168     run_client_tests();
169
170     debugOutput(DEBUG_LEVEL_NORMAL, "bye...\n");
171    
172     return 0;
173 }
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