d01dab68847fc93912edb7e9c7a1e873cf11a1e5
[paraslash.git] / recv.c
1 /*
2 * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file recv.c the stand-alone audio stream receiver */
8
9 #include <regex.h>
10 #include <sys/types.h>
11 #include <dirent.h>
12
13 #include "para.h"
14 #include "list.h"
15 #include "sched.h"
16 #include "ggo.h"
17 #include "recv.h"
18 #include "recv.cmdline.h"
19 #include "fd.h"
20 #include "string.h"
21 #include "error.h"
22 #include "stdout.h"
23
24 /** the gengetopt args info struct */
25 struct recv_args_info conf;
26
27 static int loglevel;
28 /** Always log to stderr. */
29 INIT_STDERR_LOGGING(loglevel);
30
31 /** init array of error codes used by para_recv */
32 INIT_RECV_ERRLISTS;
33
34 __noreturn static void print_help_and_die(void)
35 {
36 int d = conf.detailed_help_given;
37 const char **p = d? recv_args_info_detailed_help
38 : recv_args_info_help;
39
40 printf_or_die("%s\n\n", RECV_CMDLINE_PARSER_PACKAGE "-"
41 RECV_CMDLINE_PARSER_VERSION);
42 printf_or_die("%s\n\n", recv_args_info_usage);
43 for (; *p; p++)
44 printf_or_die("%s\n", *p);
45 print_receiver_helps(d);
46 exit(0);
47 }
48
49 static void *parse_config(int argc, char *argv[], int *receiver_num)
50 {
51 if (recv_cmdline_parser(argc, argv, &conf))
52 return NULL;
53 HANDLE_VERSION_FLAG("recv", conf);
54 if (conf.help_given || conf.detailed_help_given)
55 print_help_and_die();
56 loglevel = get_loglevel_by_name(conf.loglevel_arg);
57 return check_receiver_arg(conf.receiver_arg, receiver_num);
58 }
59
60 /**
61 * the main function of para_recv
62 *
63 * \param argc number of arguments
64 * \param argv vector of arguments
65 *
66 * para_recv uses the specified receiver to receive an audio stream sent by
67 * para_server. The received data is written to stdout.
68 *
69 * \return \a EXIT_SUCCESS on success, \a EXIT_FAILURE on errors.
70 */
71 int main(int argc, char *argv[])
72 {
73 int ret, r_opened = 0, receiver_num;
74 struct receiver *r = NULL;
75 struct receiver_node rn;
76 struct stdout_task sot;
77 static struct sched s;
78
79 s.default_timeout.tv_sec = 1;
80 s.default_timeout.tv_usec = 0;
81
82 memset(&sot, 0, sizeof(struct stdout_task));
83 memset(&rn, 0, sizeof(struct receiver_node));
84 recv_init();
85 ret = -E_RECV_SYNTAX;
86 rn.conf = parse_config(argc, argv, &receiver_num);
87 if (!rn.conf) {
88 PARA_EMERG_LOG("parse failed\n");
89 goto out;
90 }
91 r = &receivers[receiver_num];
92 rn.receiver = r;
93 ret = r->open(&rn);
94 if (ret < 0)
95 goto out;
96 r_opened = 1;
97
98 stdout_set_defaults(&sot);
99 sot.bufp = &rn.buf;
100 sot.loaded = &rn.loaded;
101 sot.input_error = &rn.task.error;
102 register_task(&sot.task);
103
104 rn.task.pre_select = r->pre_select;
105 rn.task.post_select = r->post_select;
106 sprintf(rn.task.status, "receiver node");
107 register_task(&rn.task);
108
109 ret = schedule(&s);
110 out:
111 if (r_opened)
112 r->close(&rn);
113 if (r)
114 r->shutdown();
115 if (ret < 0)
116 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
117 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
118 }