recv.c

   1 /*
   2  * Copyright (C) 2005-2008 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 <sys/types.h>
  10 #include <dirent.h>
  11
  12 #include "para.h"
  13 #include "list.h"
  14 #include "sched.h"
  15 #include "ggo.h"
  16 #include "recv.h"
  17 #include "recv.cmdline.h"
  18 #include "fd.h"
  19 #include "error.h"
  20 #include "stdout.h"
  21
  22 /** the gengetopt args info struct */
  23 struct recv_args_info conf;
  24
  25 /** always log to stderr */
  26 INIT_STDERR_LOGGING(conf.loglevel_arg);
  27
  28 /** init array of error codes used by para_recv */
  29 INIT_RECV_ERRLISTS;
  30
  31 __noreturn static void print_help_and_die(void)
  32 {
  33         printf("dsfsfsd\n");
  34         int i, d = conf.detailed_help_given;
  35         const char **p = d? recv_args_info_detailed_help
  36                 : recv_args_info_help;
  37
  38         printf_or_die("%s\n\n", RECV_CMDLINE_PARSER_PACKAGE "-"
  39                 RECV_CMDLINE_PARSER_VERSION);
  40         printf_or_die("%s\n\n", recv_args_info_usage);
  41         for (; *p; p++)
  42                 printf_or_die("%s\n", *p);
  43
  44         printf_or_die("\nAvailable receivers: \n\t");
  45         FOR_EACH_RECEIVER(i)
  46                 printf_or_die("%s%s", i? " " : "", receivers[i].name);
  47         printf_or_die("\n\n");
  48         FOR_EACH_RECEIVER(i) {
  49                 struct receiver *r = receivers + i;
  50
  51                 if (!r->help.short_help)
  52                         continue;
  53                 printf_or_die("Options for %s:\n", r->name);
  54                 ggo_print_help(&r->help, d);
  55         }
  56         exit(0);
  57 }
  58
  59 static void *parse_config(int argc, char *argv[], int *receiver_num)
  60 {
  61         if (recv_cmdline_parser(argc, argv, &conf))
  62                 return NULL;
  63         HANDLE_VERSION_FLAG("recv", conf);
  64         if (conf.help_given || conf.detailed_help_given)
  65                 print_help_and_die();
  66         return check_receiver_arg(conf.receiver_arg, receiver_num);
  67 }
  68
  69 /**
  70  * the main function of para_recv
  71  *
  72  * \param argc number of arguments
  73  * \param argv vector of arguments
  74  *
  75  * para_recv uses the specified receiver to receive an audio stream sent by
  76  * para_server. The received data is written to stdout.
  77  *
  78  * \return \a EXIT_SUCCESS on success, \a EXIT_FAILURE on errors.
  79  */
  80 int main(int argc, char *argv[])
  81 {
  82         int ret, r_opened = 0, receiver_num;
  83         struct receiver *r = NULL;
  84         struct receiver_node rn;
  85         struct stdout_task sot;
  86         static struct sched s;
  87
  88         s.default_timeout.tv_sec = 1;
  89         s.default_timeout.tv_usec = 0;
  90
  91         memset(&sot, 0, sizeof(struct stdout_task));
  92         memset(&rn, 0, sizeof(struct receiver_node));
  93         FOR_EACH_RECEIVER(ret)
  94                 receivers[ret].init(&receivers[ret]);
  95         ret = -E_RECV_SYNTAX;
  96         rn.conf = parse_config(argc, argv, &receiver_num);
  97         if (!rn.conf) {
  98                 PARA_EMERG_LOG("parse failed\n");
  99                 goto out;
 100         }
 101         r = &receivers[receiver_num];
 102         rn.receiver = r;
 103         ret = r->open(&rn);
 104         if (ret < 0)
 105                 goto out;
 106         r_opened = 1;
 107
 108         stdout_set_defaults(&sot);
 109         sot.buf = rn.buf;
 110         sot.loaded = &rn.loaded;
 111         sot.input_error = &rn.task.error;
 112         register_task(&sot.task);
 113
 114         rn.task.pre_select = r->pre_select;
 115         rn.task.post_select = r->post_select;
 116         sprintf(rn.task.status, "receiver node");
 117         register_task(&rn.task);
 118
 119         ret = schedule(&s);
 120 out:
 121         if (r_opened)
 122                 r->close(&rn);
 123         if (r)
 124                 r->shutdown();
 125         if (ret < 0)
 126                 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
 127         return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
 128 }