/*
* Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file audiod.c the paraslash's audio daemon */
struct timeval restart_barrier;
};
+/**
+ * para_audiod uses \p MAX_STREAM_SLOTS different slots, each of which may
+ * be associated with a receiver/filter/writer triple. This array holds all
+ * information on the status of these slots.
+ *
+ * \sa struct slot_info
+ * */
struct slot_info slot[MAX_STREAM_SLOTS];
+/**
+ * the current mode of operation of which can be changed by the on/off/cycle
+ * commands. It is either, AUDIOD_OFF, AUDIOD_ON or AUDIOD_STANDBY.
+ */
int audiod_status = AUDIOD_ON;
+/**
+ * the gengetopt args_info struct that holds information on all command line
+ * arguments
+ */
struct audiod_args_info conf;
+
static char *socket_name;
static FILE *logfile;
static struct audio_format_info afi[NUM_AUDIO_FORMATS];
static struct signal_task signal_task_struct, *sig_task = &signal_task_struct;
static struct status_task status_task_struct;
+
+/**
+ * the task that calls the status command of para_server
+ *
+ * \sa struct status_task
+ */
struct status_task *stat_task = &status_task_struct;
static struct timeval initial_delay_barrier;
return -E_UNSUPPORTED_AUDIO_FORMAT;
}
-/*
- * log function. first argument is loglevel.
+/**
+ * the log function of para_audiod
+ *
+ * \param ll loglevel
+ * \param fmt the format string
*/
void para_log(int ll, const char* fmt,...)
{
return open_receiver(i) < 0? 0 : 1;
}
-static void compute_time_diff(const struct timeval *status_time)
+static unsigned compute_time_diff(const struct timeval *status_time)
{
struct timeval tmp, diff;
- static int count;
+ static unsigned count;
int sign, sa_time_diff_sign = stat_task->sa_time_diff_sign;
const struct timeval max_deviation = {0, 500 * 1000};
const int time_smooth = 5;
+ if (!status_time)
+ return count;
sign = tv_diff(status_time, now, &diff);
// PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
// sign, sa_time_diff_sign);
);
out:
stat_task->sa_time_diff_sign = sa_time_diff_sign;
+ return count;
}
static void check_stat_line(char *line)
delay.tv_usec = (conf.stream_delay_arg % 1000) * 1000;
stat_task->server_stream_start.tv_sec = sec;
stat_task->server_stream_start.tv_usec = usec;
- if (stat_task->sa_time_diff_sign < 0)
- tv_add(&stat_task->server_stream_start,
- &stat_task->sa_time_diff, &a_start);
- else
- tv_diff(&stat_task->server_stream_start,
- &stat_task->sa_time_diff, &a_start);
- tv_add(&a_start, &delay, &initial_delay_barrier);
+ if (compute_time_diff(NULL) > 2) {
+ if (stat_task->sa_time_diff_sign < 0)
+ tv_add(&stat_task->server_stream_start,
+ &stat_task->sa_time_diff, &a_start);
+ else
+ tv_diff(&stat_task->server_stream_start,
+ &stat_task->sa_time_diff, &a_start);
+ tv_add(&a_start, &delay, &initial_delay_barrier);
+ }
}
break;
case SI_CURRENT_TIME:
s->timeout = min_delay;
continue;
}
- PARA_INFO_LOG("inital delay: %lu ms left\n", tv2ms(&diff));
+ PARA_INFO_LOG("initial delay: %lu ms left\n", tv2ms(&diff));
if (tv_diff(&s->timeout, &diff, NULL) > 0) {
s->timeout = diff;
}
}
}
+/**
+ * close the connection to para_server and exit
+ *
+ * \param status the exit status which is passed to exit(3)
+ * \param msg the log message
+ *
+ * Log \a msg with loglevel \p EMERG, close the connection to para_server if
+ * open, and call \p exit(status). \a status should be either EXIT_SUCCESS or
+ * EXIT_FAILURE.
+ *
+ * \sa exit(3)
+ */
void __noreturn clean_exit(int status, const char *msg)
{
PARA_EMERG_LOG("%s\n", msg);
exit(status);
}
+/* avoid busy loop if server is down */
+static void set_stat_task_restart_barrier(void)
+{
+ struct timeval delay = {5, 0};
+ tv_add(now, &delay, &stat_task->restart_barrier);
+}
static void client_task_event_handler(__a_unused struct task *t)
{
- struct private_client_data *pcd = t->private_data;
int i;
- struct timeval delay = {1, 0};
if (t->ret == -E_HANDSHAKE_COMPLETE)
return;
close_stat_pipe();
if (t->ret != -E_SERVER_EOF)
stat_task->clock_diff_count = conf.clock_diff_count_arg;
- /* avoid busy loop if server is down */
- tv_add(now, &delay, &stat_task->restart_barrier);
+ set_stat_task_restart_barrier();
FOR_EACH_AUDIO_FORMAT(i)
afi[i].restart_barrier = stat_task->restart_barrier;
}
int argc = 2;
ret = client_open(argc, argv, &st->pcd);
}
+ set_stat_task_restart_barrier();
if (ret < 0)
return;
st->pcd->task.event_handler = client_task_event_handler;
PARA_WARNING_LOG("%s", "invalid mode\n");
}
+/**
+ * the main function of para_audiod
+ *
+ * \param argc usual argument count
+ * \param argv usual argument vector
+ *
+ * \return EXIT_SUCCESS or EXIT_FAILURE
+ *
+ * \sa para_audiod(1)
+ * */
int main(int argc, char *argv[])
{
char *cf;
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