/*
- * Copyright (C) 2005-2006 Andre Noll <noll@mathematik.tu-darmstadt.de>
+ * 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 */
+#include <sys/types.h>
+#include <dirent.h>
#include "para.h"
-
+#include "error.h"
#include "audiod.cmdline.h"
#include "list.h"
#include "sched.h"
#include "fd.h"
#include "write.h"
#include "write_common.h"
-#include "error.h"
+#include "signal.h"
/** define the array of error lists needed by para_audiod */
INIT_AUDIOD_ERRLISTS;
/** define the array containing all supported audio formats */
-DEFINE_AUDIO_FORMAT_ARRAY;
+const char *audio_formats[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL};
/** defines how to handle one supported audio format */
struct audio_format_info {
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;
/**
* the task for handling audiod commands
struct task task;
};
-/**
- * task for signal handling
- */
-struct signal_task {
- /** the signal pipe */
- int fd;
- /** the number of the most recent signal */
- int signum;
- /** the associated task structure */
- struct task task;
-};
-
/** iterate over all supported audio formats */
#define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
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,...)
{
static char *configfile_exists(void)
{
- static char *config_file;
-
- if (!config_file) {
- char *home = para_homedir();
- config_file = make_message("%s/.paraslash/audiod.conf", home);
- free(home);
- }
- return file_exists(config_file)? config_file : NULL;
+ char *home = para_homedir();
+ char *config_file = make_message("%s/.paraslash/audiod.conf",
+ home);
+ free(home);
+ if (file_exists(config_file))
+ return config_file;
+ free(config_file);
+ return NULL;
}
static void setup_signal_handling(void)
{
struct slot_info *s = &slot[slot_num];
struct audio_format_info *a;
- const struct timeval restart_delay = {0, 200 * 1000};
if (s->format < 0 || !s->receiver_node)
return;
a = &afi[s->format];
PARA_NOTICE_LOG("closing %s receiver in slot %d (eof = %d)\n",
audio_formats[s->format] , slot_num, s->receiver_node->eof);
-// if (!s->receiver_node->eof)
-// unregister_task(&s->receiver_node->task);
a->receiver->close(s->receiver_node);
free(s->receiver_node);
s->receiver_node = NULL;
- /* set restart barrier */
- tv_add(now, &restart_delay, &afi[s->format].restart_barrier);
}
static void kill_all_decoders(void)
return -E_NO_MORE_SLOTS;
}
-static int decoder_running(int format)
-{
- int i, ret = 0;
- struct slot_info *s;
-
- FOR_EACH_SLOT(i) {
- s = &slot[i];
- if (s->format == format && s->receiver_node)
- ret |= 1;
- if (s->format == format && s->wng)
- ret |= 2;
- }
- return ret;
-}
-
-static void close_stat_pipe(void)
-{
- int i;
-
- if (!stat_task->pcd)
- return;
- client_close(stat_task->pcd);
- stat_task->pcd = NULL;
- for (i = 0; i < NUM_STAT_ITEMS; i++) {
- free(stat_task->stat_item_values[i]);
- stat_task->stat_item_values[i] = NULL;
- }
- dump_empty_status();
- stat_task->length_seconds = 0;
- stat_task->offset_seconds = 0;
- audiod_status_dump();
- stat_task->playing = 0;
- stat_task->stat_item_values[SI_STATUS_BAR] = make_message(
- "%s:no connection to para_server\n",
- status_item_list[SI_STATUS_BAR]);
- stat_client_write(stat_task->stat_item_values[SI_STATUS_BAR], SI_STATUS_BAR);
-}
-
-void __noreturn clean_exit(int status, const char *msg)
-{
- PARA_EMERG_LOG("%s\n", msg);
- if (socket_name)
- unlink(socket_name);
- close_stat_pipe();
- exit(status);
-}
-
/**
* get the number of filters
*
static void rn_event_handler(struct task *t)
{
struct receiver_node *rn = t->private_data;
+ const struct timeval restart_delay = {0, 10 * 1000};
+ int i;
PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
unregister_task(t);
rn->eof = 1;
+ /* set restart barrier */
+ FOR_EACH_SLOT(i) {
+ if (slot[i].receiver_node != rn)
+ continue;
+ tv_add(now, &restart_delay, &afi[slot[i].format].restart_barrier);
+ }
}
-static void open_receiver(int format)
+static int open_receiver(int format)
{
struct audio_format_info *a = &afi[format];
struct slot_info *s;
int ret, slot_num;
struct receiver_node *rn;
+ const struct timeval restart_delay = {1, 0};
- slot_num = get_empty_slot();
- if (slot_num < 0)
- clean_exit(EXIT_FAILURE, PARA_STRERROR(-slot_num));
+ ret = get_empty_slot();
+ if (ret < 0)
+ goto err;
+ slot_num = ret;
s = &slot[slot_num];
s->format = format;
s->receiver_node = para_calloc(sizeof(struct receiver_node));
rn->conf = a->receiver_conf;
ret = a->receiver->open(s->receiver_node);
if (ret < 0) {
- PARA_ERROR_LOG("failed to open receiver (%s)\n",
- PARA_STRERROR(-ret));
free(s->receiver_node);
s->receiver_node = NULL;
- return;
+ goto err;
}
PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
audio_formats[s->format], a->receiver->name, slot_num);
rn->task.event_handler = rn_event_handler;
sprintf(rn->task.status, "%s receiver node", rn->receiver->name);
register_task(&rn->task);
+ return 1;
+err:
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ tv_add(now, &restart_delay, &afi[format].restart_barrier);
+ return ret;
+}
+
+static int receiver_running(int format)
+{
+ int i;
+
+ FOR_EACH_SLOT(i) {
+ struct slot_info *s = &slot[i];
+ if (s->format == format && s->receiver_node
+ && !s->receiver_node->eof)
+ return 1;
+ }
+ return 0;
}
static int open_current_receiver(struct sched *s)
{
int i;
struct timeval diff;
+ char *audio_format = stat_task->stat_item_values[SI_FORMAT];
- if (!stat_task->af_status || !stat_task->pcd)
+ if (!audio_format || !stat_task->pcd)
return 0;
- i = get_audio_format_num(stat_task->af_status);
+ i = get_audio_format_num(audio_format + strlen(
+ status_item_list[SI_FORMAT]) + 1);
if (i < 0)
return 0;
- if (decoder_running(i))
+ if (receiver_running(i))
return 0;
if (tv_diff(now, &afi[i].restart_barrier, &diff) < 0) {
s->timeout = diff;
return 0;
}
- open_receiver(i);
- return 1;
+ 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);
sa_time_diff_sign = sign;
stat_task->sa_time_diff = diff;
count++;
- return;
+ goto out;
}
if (count > 5) {
int s = tv_diff(&diff, &stat_task->sa_time_diff, &tmp);
count > 10? sign : sign * time_smooth, &diff,
&tmp);
stat_task->sa_time_diff = tmp;
- PARA_DEBUG_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
+ PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
sign > 0? "+" : "-",
tv2ms(&diff),
sa_time_diff_sign ? "+" : "-",
tv2ms(&stat_task->sa_time_diff)
);
+out:
+ stat_task->sa_time_diff_sign = sa_time_diff_sign;
+ return count;
}
-static void check_stat_line(char *line)
+static int check_stat_line(char *line, __a_unused void *data)
{
int itemnum;
size_t ilen = 0;
// PARA_INFO_LOG("line: %s\n", line);
if (!line)
- return;
+ return 1;
itemnum = stat_line_valid(line);
if (itemnum < 0) {
PARA_WARNING_LOG("invalid status line: %s\n", line);
- return;
+ return 1;
}
+ if (stat_task->clock_diff_count && itemnum != SI_CURRENT_TIME)
+ return 1;
tmp = make_message("%s\n", line);
stat_client_write(tmp, itemnum);
free(tmp);
case SI_STATUS:
stat_task->playing = strstr(line, "playing")? 1 : 0;
break;
- case SI_FORMAT:
- free(stat_task->af_status);
- stat_task->af_status = para_strdup(line + ilen + 1);
- break;
case SI_OFFSET:
stat_task->offset_seconds = atoi(line + ilen + 1);
break;
break;
case SI_STREAM_START:
if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
+ struct timeval a_start, delay;
+ delay.tv_sec = conf.stream_delay_arg / 1000;
+ 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 (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:
struct timeval tv = {sec, usec};
compute_time_diff(&tv);
}
+ if (stat_task->clock_diff_count)
+ stat_task->clock_diff_count--;
break;
}
-}
-
-static void handle_signal(int sig)
-{
- switch (sig) {
- case SIGINT:
- case SIGTERM:
- case SIGHUP:
- PARA_EMERG_LOG("terminating on signal %d\n", sig);
- clean_exit(EXIT_FAILURE, "caught deadly signal");
- return;
- }
+ return 1;
}
static void try_to_close_slot(int slot_num)
/*
* Check if any receivers/filters/writers need to be started and do so if
- * neccessary. Since the pre_select function didn't have a chance yet to put
+ * necessary. Since the pre_select function didn't have a chance yet to put
* file descriptors into the fd sets given by s, make the upcoming select()
* return immediately to avoid a long timeout in case we started something.
*/
FOR_EACH_SLOT(i) {
struct slot_info *sl = &slot[i];
struct audio_format_info *a;
+ struct timeval diff;
if (sl->format < 0)
continue;
s->timeout = min_delay;
continue;
}
- if (sl->fc && *sl->fc->out_loaded && !sl->wng) {
+ if (!sl->fc || !*sl->fc->out_loaded || sl->wng)
+ continue;
+ if (tv_diff(now, &initial_delay_barrier, &diff) > 0) {
open_writers(i);
s->timeout = min_delay;
+ continue;
+ }
+ PARA_INFO_LOG("initial delay: %lu ms left\n", tv2ms(&diff));
+ if (tv_diff(&s->timeout, &diff, NULL) > 0) {
+ s->timeout = diff;
}
}
}
{
int i;
- /* save away the current time for other users */
t->ret = 1;
FOR_EACH_SLOT(i)
try_to_close_slot(i);
PARA_INFO_LOG("initializing %s receiver\n", receivers[i].name);
receivers[i].init(&receivers[i]);
}
- for (i = 0; i < conf.receiver_given; i++) {
+ for (i = conf.receiver_given - 1; i >= 0; i--) {
char *arg = conf.receiver_arg[i];
- char *recv = strchr(arg, ':');
+ char *recv_arg = strchr(arg, ':');
ret = -E_MISSING_COLON;
- if (!recv)
+ if (!recv_arg)
goto out;
- *recv = '\0';
- recv++;
+ *recv_arg = '\0';
+ recv_arg++;
ret = get_audio_format_num(arg);
if (ret < 0)
goto out;
- afi[ret].receiver_conf = check_receiver_arg(recv, &receiver_num);
+ afi[ret].receiver_conf = check_receiver_arg(recv_arg, &receiver_num);
if (!afi[ret].receiver_conf) {
ret = -E_RECV_SYNTAX;
goto out;
PARA_NOTICE_LOG("local socket: %s\n", socket_name);
if (conf.force_given)
unlink(socket_name);
- fd = create_pf_socket(socket_name, &unix_addr,
+ fd = create_local_socket(socket_name, &unix_addr,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
if (fd < 0) {
- PARA_EMERG_LOG("%s", "can not connect to socket\n");
+ PARA_EMERG_LOG("can not connect to socket\n");
exit(EXIT_FAILURE); /* do not unlink socket */
}
if (listen(fd , 5) < 0) {
- PARA_EMERG_LOG("%s", "can not listen on socket\n");
+ PARA_EMERG_LOG("can not listen on socket\n");
exit(EXIT_FAILURE); /* do not unlink socket */
}
mark_fd_nonblock(fd);
{
struct signal_task *st = t->private_data;
- if (t->ret != -E_SIGNAL_CAUGHT)
- PARA_ERROR_LOG("%s (ignored)\n", PARA_STRERROR(-t->ret));
- else
- handle_signal(st->signum);
+ switch (st->signum) {
+ case SIGINT:
+ case SIGTERM:
+ case SIGHUP:
+ PARA_EMERG_LOG("terminating on signal %d\n", st->signum);
+ clean_exit(EXIT_FAILURE, "caught deadly signal");
+ }
}
static void signal_pre_select(struct sched *s, struct task *t)
struct command_task *ct = t->private_data;
t->ret = 1; /* always successful */
- if (audiod_status != AUDIOD_OFF)
- audiod_status_dump();
+ audiod_status_dump();
if (!FD_ISSET(ct->fd, &s->rfds))
return;
ret = handle_connect(ct->fd);
sprintf(ct->task.status, "command task");
}
-static void client_task_event_handler(__a_unused struct task *t)
+static void close_stat_pipe(void)
{
- struct private_client_data *pcd = t->private_data;
- if (t->ret == -E_HANDSHAKE_COMPLETE)
+ int i;
+
+ if (!stat_task->pcd)
return;
- unregister_task(t);
- pcd->eof = 1;
+ client_close(stat_task->pcd);
+ stat_task->pcd = NULL;
+ for (i = 0; i < NUM_STAT_ITEMS; i++) {
+ free(stat_task->stat_item_values[i]);
+ stat_task->stat_item_values[i] = NULL;
+ }
+ dump_empty_status();
+ stat_task->length_seconds = 0;
+ stat_task->offset_seconds = 0;
+ audiod_status_dump();
+ stat_task->playing = 0;
+ stat_task->stat_item_values[SI_BASENAME] = make_message(
+ "%s:no connection to para_server\n",
+ status_item_list[SI_BASENAME]);
+ stat_client_write(stat_task->stat_item_values[SI_BASENAME],
+ SI_BASENAME);
+ if (stat_task->clock_diff_count) {
+ stat_task->clock_diff_barrier.tv_sec = now->tv_sec + 1;
+ stat_task->clock_diff_barrier.tv_usec = now->tv_usec;
+ }
}
-static void status_event_handler(__a_unused struct task *t)
+/**
+ * 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);
+ if (socket_name)
+ unlink(socket_name);
+ close_stat_pipe();
+ 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 timeval delay = {1, 0};
int i;
- struct status_task *st = t->private_data;
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t->ret));
+ if (t->ret == -E_HANDSHAKE_COMPLETE)
+ return;
+ unregister_task(t);
close_stat_pipe();
- /* avoid busy loop if server is down */
- tv_add(now, &delay, &st->restart_barrier);
+ if (t->ret != -E_SERVER_EOF)
+ stat_task->clock_diff_count = conf.clock_diff_count_arg;
+ set_stat_task_restart_barrier();
FOR_EACH_AUDIO_FORMAT(i)
- afi[i].restart_barrier = st->restart_barrier;
+ afi[i].restart_barrier = stat_task->restart_barrier;
}
static void status_pre_select(struct sched *s, struct task *t)
{
struct status_task *st = t->private_data;
- int argc = 2;
- char *argv[] = {"audiod", "stat", NULL};
- t->ret = 1;
- if (st->pcd && (audiod_status == AUDIOD_OFF || st->pcd->eof))
- close_stat_pipe();
- if (!st->pcd && audiod_status != AUDIOD_OFF
- && tv_diff(now, &st->restart_barrier, NULL) > 0) {
- t->ret = client_parse_config(argc, argv, &st->pcd);
- if (t->ret < 0)
- return;
- t->ret = client_open(st->pcd);
- if (t->ret < 0)
+ int ret;
+
+ t->ret = 1; /* always successful */
+ if (st->pcd || audiod_status == AUDIOD_OFF)
+ return;
+ if (!st->clock_diff_count && tv_diff(now, &st->restart_barrier, NULL)
+ < 0)
+ return;
+ if (st->clock_diff_count) {
+ char *argv[] = {"audiod", "stat", "1", NULL};
+ int argc = 3;
+ if (tv_diff(now, &st->clock_diff_barrier, NULL) < 0)
return;
- st->pcd->task.event_handler = client_task_event_handler;
- s->timeout.tv_sec = 0;
- s->timeout.tv_usec = 1;
+ PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count);
+ ret = client_open(argc, argv, &st->pcd);
+
+ } else {
+ char *argv[] = {"audiod", "stat", NULL};
+ 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;
+ s->timeout.tv_sec = 0;
+ s->timeout.tv_usec = 1;
}
static void status_post_select(__a_unused struct sched *s, struct task *t)
{
struct status_task *st = t->private_data;
+ unsigned bytes_left;
t->ret = 1;
- if (!st->pcd || !st->pcd->loaded
- || st->pcd->status != CL_RECEIVING)
+ if (!st->pcd || st->pcd->status != CL_RECEIVING)
+ return;
+ if (st->pcd && audiod_status == AUDIOD_OFF) {
+ unregister_task(&st->pcd->task);
+ close_stat_pipe();
+ st->clock_diff_count = conf.clock_diff_count_arg;
return;
- st->pcd->loaded = for_each_line(st->pcd->buf, st->pcd->loaded,
- &check_stat_line);
+ }
+ bytes_left = for_each_line(st->pcd->buf, st->pcd->loaded,
+ &check_stat_line, NULL);
+ if (st->pcd->loaded != bytes_left) {
+ st->last_status_read = *now;
+ st->pcd->loaded = bytes_left;
+ } else {
+ struct timeval diff;
+ tv_diff(now, &st->last_status_read, &diff);
+ if (diff.tv_sec > 61)
+ close_stat_pipe();
+ }
}
static void init_status_task(struct status_task *st)
memset(st, 0, sizeof(struct status_task));
st->task.pre_select = status_pre_select;
st->task.post_select = status_post_select;
- st->task.event_handler = status_event_handler;
st->task.private_data = st;
st->sa_time_diff_sign = 1;
+ st->clock_diff_count = conf.clock_diff_count_arg;
sprintf(st->task.status, "status task");
}
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;
+ char *config_file;
int ret, i;
struct sched s;
struct command_task command_task_struct, *cmd_task = &command_task_struct;
valid_fd_012();
audiod_cmdline_parser(argc, argv, &conf);
+ HANDLE_VERSION_FLAG("audiod", conf);
para_drop_privileges(conf.user_arg, conf.group_arg);
- cf = configfile_exists();
- if (cf) {
- if (audiod_cmdline_parser_configfile(cf, &conf, 0, 0, 0)) {
+ config_file = configfile_exists();
+ if (config_file) {
+ struct audiod_cmdline_parser_params params = {
+ .override = 0,
+ .initialize = 0,
+ .check_required = 0,
+ .check_ambiguity = 0
+
+ };
+ if (audiod_cmdline_parser_config_file(config_file, &conf, ¶ms)) {
PARA_EMERG_LOG("%s", "parse error in config file\n");
exit(EXIT_FAILURE);
}
+ free(config_file);
}
if (conf.logfile_given)
logfile = open_log(conf.logfile_arg);
projects / paraslash.git / blobdiff