Merge branch 'refs/heads/t/portable_io'
[paraslash.git] / recv.c
1 /*
2 * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
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 <lopsub.h>
12
13 #include "recv_cmd.lsg.h"
14 #include "recv.lsg.h"
15 #include "para.h"
16 #include "list.h"
17 #include "sched.h"
18 #include "buffer_tree.h"
19 #include "recv.h"
20 #include "fd.h"
21 #include "string.h"
22 #include "error.h"
23 #include "stdout.h"
24 #include "version.h"
25
26 /** Array of error strings. */
27 DEFINE_PARA_ERRLIST;
28
29 #define CMD_PTR (lls_cmd(0, recv_suite))
30 #define OPT_RESULT(_name, _lpr) \
31 (lls_opt_result(LSG_RECV_PARA_RECV_OPT_ ## _name, lpr))
32 #define OPT_GIVEN(_name, _lpr) (lls_opt_given(OPT_RESULT(_name, _lpr)))
33 #define OPT_UINT32_VAL(_name, _lpr) (lls_uint32_val(0, OPT_RESULT(_name, _lpr)))
34 #define OPT_STRING_VAL(_name, _lpr) (lls_string_val(0, OPT_RESULT(_name, _lpr)))
35
36 static int loglevel;
37 /** Always log to stderr. */
38 INIT_STDERR_LOGGING(loglevel);
39
40 static void handle_help_flag(struct lls_parse_result *lpr)
41 {
42 char *help;
43
44 if (OPT_GIVEN(DETAILED_HELP, lpr))
45 help = lls_long_help(CMD_PTR);
46 else if (OPT_GIVEN(HELP, lpr))
47 help = lls_short_help(CMD_PTR);
48 else
49 return;
50 printf("%s\n", help);
51 free(help);
52 print_receiver_helps(OPT_GIVEN(DETAILED_HELP, lpr));
53 exit(EXIT_SUCCESS);
54 }
55
56 /**
57 * The main function of para_recv.
58 *
59 * \param argc number of arguments
60 * \param argv vector of arguments
61 *
62 * para_recv uses the specified receiver to receive an audio stream sent by
63 * para_server. The received data is written to stdout.
64 *
65 * \return \a EXIT_SUCCESS on success, \a EXIT_FAILURE on errors.
66 */
67 int main(int argc, char *argv[])
68 {
69 int ret;
70 const struct receiver *r = NULL;
71 struct receiver_node rn;
72 struct stdout_task sot = {.btrn = NULL};
73 static struct sched s;
74 struct task_info ti;
75 const struct lls_command *cmd;
76 struct lls_parse_result *lpr; /* command line */
77 struct lls_parse_result *receiver_lpr; /* receiver specific options */
78 char *errctx;
79
80 ret = lls(lls_parse(argc, argv, CMD_PTR, &lpr, &errctx));
81 if (ret < 0)
82 goto out;
83 loglevel = OPT_UINT32_VAL(LOGLEVEL, lpr);
84 version_handle_flag("recv", OPT_GIVEN(VERSION, lpr));
85 handle_help_flag(lpr);
86 recv_init();
87 memset(&rn, 0, sizeof(struct receiver_node));
88 ret = check_receiver_arg(OPT_STRING_VAL(RECEIVER, lpr), &receiver_lpr);
89 if (ret < 0)
90 goto free_lpr;
91 cmd = lls_cmd(ret, recv_cmd_suite);
92 r = lls_user_data(cmd);
93 rn.receiver = r;
94 rn.lpr = receiver_lpr;
95 rn.btrn = btr_new_node(&(struct btr_node_description)
96 EMBRACE(.name = lls_command_name(cmd)));
97 ret = r->open(&rn);
98 if (ret < 0)
99 goto remove_btrn;
100 sot.btrn = btr_new_node(&(struct btr_node_description)
101 EMBRACE(.parent = rn.btrn, .name = "stdout"));
102 stdout_task_register(&sot, &s);
103
104 ti.name = lls_command_name(cmd);
105 ti.pre_select = r->pre_select;
106 ti.post_select = r->post_select;
107 ti.context = &rn;
108 rn.task = task_register(&ti, &s);
109
110 s.default_timeout.tv_sec = 1;
111 s.default_timeout.tv_usec = 0;
112 ret = schedule(&s);
113 sched_shutdown(&s);
114 r->close(&rn);
115 btr_remove_node(&sot.btrn);
116 remove_btrn:
117 btr_remove_node(&rn.btrn);
118 lls_free_parse_result(receiver_lpr, cmd);
119 free_lpr:
120 lls_free_parse_result(lpr, CMD_PTR);
121 out:
122 if (ret < 0) {
123 if (errctx)
124 PARA_ERROR_LOG("%s\n", errctx);
125 free(errctx);
126 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
127 }
128 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
129 }