/*
- * Copyright (C) 2005-2006 Andre Noll <noll@mathematik.tu-darmstadt.de>
+ * Copyright (C) 2005-2008 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 <signal.h>
#include "para.h"
-
+#include "error.h"
#include "audiod.cmdline.h"
#include "list.h"
-#include "close_on_fork.h"
#include "sched.h"
#include "recv.h"
#include "filter.h"
#include "grab_client.cmdline.h"
#include "grab_client.h"
-
-#include "error.h"
+#include "client.cmdline.h"
+#include "client.h"
#include "audiod.h"
#include "net.h"
#include "daemon.h"
#include "fd.h"
#include "write.h"
#include "write_common.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 */
+/** Defines how audiod handles one supported audio format. */
struct audio_format_info {
/** pointer to the receiver for this audio format */
struct receiver *receiver;
void *receiver_conf;
/** the number of filters that should be activated for this audio format */
unsigned int num_filters;
- /** pointer to the array of filters to be activated */
- struct filter **filters;
- /** pointer to the array of filter configurations */
+ /** Array of filter numbers to be activated. */
+ unsigned *filter_nums;
+ /** Pointer to the array of filter configurations. */
void **filter_conf;
/** the number of filters that should be activated for this audio format */
unsigned int num_writers;
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;
-struct gengetopt_args_info conf;
+/**
+ * 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;
};
-struct signal_task {
- int fd;
- int signum;
- struct task task;
-};
-
/** iterate over all supported audio formats */
#define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
int get_audio_format_num(char *name)
{
int i;
+
+ while (para_isspace(*name))
+ name++;
FOR_EACH_AUDIO_FORMAT(i)
if (!strcmp(name, audio_formats[i]))
return i;
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,...)
{
if (ll < conf.loglevel_arg)
return;
+ if (!logfile && conf.daemon_given)
+ return;
if (!hostname)
hostname = para_hostname();
outfd = logfile? logfile : stderr;
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)
PARA_INFO_LOG("signal pipe: fd %d\n", sig_task->fd);
para_install_sighandler(SIGINT);
para_install_sighandler(SIGTERM);
- para_install_sighandler(SIGCHLD);
para_install_sighandler(SIGHUP);
- para_install_sighandler(SIGPIPE);
-// signal(SIGPIPE, SIG_IGN);
+ signal(SIGPIPE, SIG_IGN);
}
static void clear_slot(int slot_num)
{
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);
+ PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
+ audio_formats[s->format], slot_num);
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)
+static void kill_all_decoders(int error)
{
int i;
FOR_EACH_SLOT(i) {
struct slot_info *s = &slot[i];
- if (s->wng && !s->wng->eof) {
- PARA_INFO_LOG("unregistering writer node group in slot %d\n",
+ if (s->wng && s->wng->task.error >= 0) {
+ PARA_INFO_LOG("deactivating wng in slot %d\n",
i);
- wng_unregister(s->wng);
- s->wng->eof = 1;
+ s->wng->task.error = error;
}
- if (s->fc && !s->fc->eof) {
- PARA_INFO_LOG("unregistering filter chain in slot %d\n", i);
- unregister_task(&s->fc->task);
- s->fc->eof = 1;
+ if (s->fc && s->fc->task.error >= 0) {
+ PARA_INFO_LOG("deactivatimg filter chain in slot %d\n", i);
+ s->fc->task.error = error;
}
- if (s->receiver_node && !s->receiver_node->eof) {
- PARA_INFO_LOG("unregistering receiver_node in slot %d\n", i);
- unregister_task(&s->receiver_node->task);
- s->receiver_node->eof = 1;
+ if (s->receiver_node && s->receiver_node->task.error >= 0) {
+ PARA_INFO_LOG("deactivating receiver_node in slot %d\n", i);
+ s->receiver_node->task.error = error;
}
}
}
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->fd < 0)
- return;
- PARA_NOTICE_LOG("%s", "closing status pipe\n");
- close(stat_task->fd);
- del_close_on_fork_list(stat_task->fd);
- stat_task->fd = -1;
-// kill_all_decoders();
- 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
*
return afi[audio_format_num].num_filters;
}
-static void filter_event_handler(struct task *t)
-{
- PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
- struct filter_chain *fc = t->private_data;
- fc->eof = 1;
- unregister_task(t);
-}
-
static void open_filters(int slot_num)
{
struct slot_info *s = &slot[slot_num];
struct audio_format_info *a = &afi[s->format];
+ struct filter_node *fn;
int nf = a->num_filters;
int i;
return;
PARA_INFO_LOG("opening %s filters\n", audio_formats[s->format]);
s->fc = para_calloc(sizeof(struct filter_chain));
- INIT_LIST_HEAD(&s->fc->filters);
+ s->fc->filter_nodes = para_malloc(nf * sizeof(struct filter_node));
s->fc->inbuf = s->receiver_node->buf;
s->fc->in_loaded = &s->receiver_node->loaded;
- s->fc->input_eof = &s->receiver_node->eof;
+ s->fc->input_error = &s->receiver_node->task.error;
s->fc->task.pre_select = filter_pre_select;
- s->fc->task.event_handler = filter_event_handler;
- s->fc->task.private_data = s->fc;
- s->fc->eof = 0;
+ s->fc->task.post_select = NULL;
+ s->fc->task.error = 0;
+ s->fc->num_filters = nf;
- s->receiver_node->output_eof = &s->fc->eof;
+ s->receiver_node->output_error = &s->fc->task.error;
sprintf(s->fc->task.status, "filter chain");
- for (i = 0; i < nf; i++) {
- struct filter_node *fn = para_calloc(sizeof(struct filter_node));
+ FOR_EACH_FILTER_NODE(fn, s->fc, i) {
+ struct filter *f = filters + a->filter_nums[i];
+ fn->filter_num = a->filter_nums[i];
fn->conf = a->filter_conf[i];
fn->fc = s->fc;
- fn->filter = a->filters[i];
+ fn->loaded = 0;
INIT_LIST_HEAD(&fn->callbacks);
- list_add_tail(&fn->node, &s->fc->filters);
- fn->filter->open(fn);
+ f->open(fn);
PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
- audio_formats[s->format], i + 1, nf,
- fn->filter->name, slot_num);
+ audio_formats[s->format], i, nf, f->name, slot_num);
s->fc->outbuf = fn->buf;
s->fc->out_loaded = &fn->loaded;
}
register_task(&s->fc->task);
}
-static void wng_event_handler(struct task *t)
-{
- struct writer_node_group *wng = t->private_data;
-
- PARA_INFO_LOG("%s\n", PARA_STRERROR(-t->ret));
- wng->eof = 1;
- wng_unregister(wng);
-}
-
static void open_writers(int slot_num)
{
int ret, i;
if (s->fc) {
s->wng->buf = s->fc->outbuf;
s->wng->loaded = s->fc->out_loaded;
- s->wng->input_eof = &s->fc->eof;
+ s->wng->input_error = &s->fc->task.error;
s->wng->channels = &s->fc->channels;
s->wng->samplerate = &s->fc->samplerate;
- s->fc->output_eof = &s->wng->eof;
+ s->fc->output_error = &s->wng->task.error;
PARA_INFO_LOG("samplerate: %d\n", *s->wng->samplerate);
} else {
s->wng->buf = s->receiver_node->buf;
s->wng->loaded = &s->receiver_node->loaded;
- s->wng->input_eof = &s->receiver_node->eof;
+ s->wng->input_error = &s->receiver_node->task.error;
}
- s->wng->task.event_handler = wng_event_handler;
for (i = 0; i < a->num_writers; i++) {
s->wng->writer_nodes[i].conf = a->writer_conf[i];
s->wng->writer_nodes[i].writer = a->writers[i];
}
ret = wng_open(s->wng);
if (ret < 0) {
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
return;
}
s->wstime = *now;
- activate_inactive_grab_clients(slot_num, s->format, &s->fc->filters);
+ activate_inactive_grab_clients(slot_num, s->format, s->fc);
}
-static void rn_event_handler(struct task *t)
-{
- struct receiver_node *rn = t->private_data;
-
- PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
- unregister_task(t);
- rn->eof = 1;
-}
-
-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 = {2, 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.private_data = s->receiver_node;
rn->task.pre_select = a->receiver->pre_select;
rn->task.post_select = a->receiver->post_select;
- rn->task.event_handler = rn_event_handler;
sprintf(rn->task.status, "%s receiver node", rn->receiver->name);
register_task(&rn->task);
+ ret = 1;
+err:
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ tv_add(now, &restart_delay, &afi[format].restart_barrier);
+ return ret;
}
-static int open_current_receiver(struct sched *s)
+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)
+ return 1;
+ }
+ return 0;
+}
+
+static int open_current_receiver(struct sched *s)
+{
struct timeval diff;
+ int cafn = stat_task->current_audio_format_num;
- if (!stat_task->af_status)
+ if (cafn < 0 || !stat_task->ct)
return 0;
- i = get_audio_format_num(stat_task->af_status);
- if (i < 0)
+ if (receiver_running(cafn))
return 0;
- if (decoder_running(i))
- return 0;
- if (tv_diff(now, &afi[i].restart_barrier, &diff) < 0) {
+ if (tv_diff(now, &afi[cafn].restart_barrier, &diff) < 0) {
s->timeout = diff;
return 0;
}
- open_receiver(i);
- return 1;
+ return open_receiver(cafn) < 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;
long unsigned sec, usec;
char *tmp;
-// PARA_INFO_LOG("line: %s\n", line);
+ //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);
switch (itemnum) {
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);
+ PARA_INFO_LOG("stat task playing: %d\n", stat_task->playing);
break;
case SI_OFFSET:
stat_task->offset_seconds = atoi(line + ilen + 1);
break;
- case SI_LENGTH:
+ case SI_SECONDS_TOTAL:
stat_task->length_seconds = atoi(line + ilen + 1);
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:
compute_time_diff(&tv);
}
break;
+ case SI_FORMAT:
+ stat_task->current_audio_format_num = get_audio_format_num(
+ line + ilen + 1);
}
-}
-
-static void handle_signal(int sig)
-{
- switch (sig) {
- case SIGCHLD:
- for (;;) {
- pid_t pid = para_reap_child();
- if (pid <= 0)
- return;
- PARA_CRIT_LOG("para_client died (pid %d)\n", pid);
- }
- case SIGINT:
- case SIGTERM:
- case SIGHUP:
- PARA_EMERG_LOG("terminating on signal %d\n", sig);
- clean_exit(EXIT_FAILURE, "caught deadly signal");
- return;
- }
-}
-
-static void try_to_close_slot(int slot_num)
-{
- struct slot_info *s = &slot[slot_num];
-
- if (s->format < 0)
- return;
- if (s->receiver_node && !s->receiver_node->eof)
- return;
- if (s->fc && !s->fc->eof)
- return;
- if (s->wng && !s->wng->eof)
- return;
- PARA_INFO_LOG("closing slot %d \n", slot_num);
- wng_close(s->wng);
- close_filters(s->fc);
- free(s->fc);
- close_receiver(slot_num);
- clear_slot(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
- * 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.
- */
-static void audiod_pre_select(struct sched *s, __a_unused struct task *t)
-{
- int i;
- struct timeval min_delay = {0, 1};
-
- t->ret = 1;
- if (audiod_status != AUDIOD_ON || !stat_task->playing)
- return kill_all_decoders();
- if (open_current_receiver(s))
- s->timeout = min_delay;
- FOR_EACH_SLOT(i) {
- struct slot_info *sl = &slot[i];
- struct audio_format_info *a;
-
- if (sl->format < 0)
- continue;
- a = &afi[sl->format];
- if (!sl->receiver_node)
- continue;
- if (!a->num_filters) {
- if (sl->receiver_node->loaded && !sl->wng) {
- open_writers(i);
- s->timeout = min_delay;
- }
- continue;
- }
- if (sl->receiver_node->loaded && !sl->fc) {
- open_filters(i);
- s->timeout = min_delay;
- continue;
- }
- if (sl->fc && *sl->fc->out_loaded && !sl->wng) {
- open_writers(i);
- s->timeout = min_delay;
- }
- }
-}
-
-static void audiod_post_select(__a_unused struct sched *s,
- __a_unused struct task *t)
-{
- int i;
-
- /* save away the current time for other users */
- t->ret = 1;
- FOR_EACH_SLOT(i)
- try_to_close_slot(i);
-}
-
-static void init_audiod_task(struct task *t)
-{
- t->pre_select = audiod_pre_select;
- t->post_select = audiod_post_select;
- t->event_handler = NULL;
- t->private_data = t;
- sprintf(t->status, "audiod task");
+ return 1;
}
static int parse_stream_command(const char *txt, char **cmd)
filter_num = check_filter_arg(cmdline, &a->filter_conf[nf]);
if (filter_num < 0)
return filter_num;
- a->filters[nf] = &filters[filter_num];
+ a->filter_nums[nf] = filter_num;
a->num_filters++;
- PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf + 1,
- a->filters[nf]->name);
+ PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf,
+ filters[filter_num].name);
return filter_num;
}
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_INFO_LOG("maximal number of filters: %d\n", nf);
FOR_EACH_AUDIO_FORMAT(i) {
afi[i].filter_conf = para_malloc(nf * sizeof(void *));
- afi[i].filters = para_malloc(nf * sizeof(struct filter *));
+ afi[i].filter_nums = para_malloc(nf * sizeof(unsigned));
}
if (!conf.no_default_filters_given)
return init_default_filters();
return 1;
}
+/* does not unlink socket on errors */
static int audiod_get_socket(void)
{
struct sockaddr_un unix_addr;
- int fd;
+ int ret, fd;
if (conf.socket_given)
socket_name = para_strdup(conf.socket_arg);
PARA_NOTICE_LOG("local socket: %s\n", socket_name);
if (conf.force_given)
unlink(socket_name);
- fd = create_pf_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");
- exit(EXIT_FAILURE); /* do not unlink socket */
- }
+ ret = create_local_socket(socket_name, &unix_addr,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
+ if (ret < 0)
+ goto err;
+ fd = ret;
if (listen(fd , 5) < 0) {
- PARA_EMERG_LOG("%s", "can not listen on socket\n");
- exit(EXIT_FAILURE); /* do not unlink socket */
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ goto err;
}
- add_close_on_fork_list(fd);
- mark_fd_nonblock(fd);
+ ret = mark_fd_nonblocking(fd);
+ if (ret < 0)
+ goto err;
return fd;
+err:
+ PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+ exit(EXIT_FAILURE);
}
-static int open_stat_pipe(void)
-{
- int ret, fd[3] = {-1, 1, 0};
- pid_t pid;
- ret = para_exec_cmdline_pid(&pid, BINDIR "/para_client stat", fd);
- if (ret >= 0) {
- ret = fd[1];
- PARA_NOTICE_LOG("stat pipe opened, fd %d\n", ret);
- add_close_on_fork_list(ret);
- mark_fd_nonblock(ret);
- } else
- clean_exit(EXIT_FAILURE, "failed to open status pipe");
- return ret;
-}
-
-void signal_event_handler(struct task *t)
-{
- 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);
-}
-
-void signal_pre_select(struct sched *s, struct task *t)
+static void signal_pre_select(struct sched *s, struct task *t)
{
- struct signal_task *st = t->private_data;
- t->ret = 1;
+ struct signal_task *st = container_of(t, struct signal_task, task);
para_fd_set(st->fd, &s->rfds, &s->max_fileno);
}
-void signal_post_select(struct sched *s, struct task *t)
+static void signal_post_select(struct sched *s, struct task *t)
{
- struct signal_task *st = t->private_data;
- t->ret = 1;
+ struct signal_task *st = container_of(t, struct signal_task, task);
+
if (!FD_ISSET(st->fd, &s->rfds))
return;
- t->ret = -E_SIGNAL_CAUGHT;
+
st->signum = para_next_signal();
+ 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");
+ }
}
-void signal_setup_default(struct signal_task *st)
+static void signal_setup_default(struct signal_task *st)
{
st->task.pre_select = signal_pre_select;
st->task.post_select = signal_post_select;
- st->task.private_data = st;
sprintf(st->task.status, "signal task");
}
static void command_pre_select(struct sched *s, struct task *t)
{
- struct command_task *ct = t->private_data;
- t->ret = 1;
+ struct command_task *ct = container_of(t, struct command_task, task);
para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
-
}
static void command_post_select(struct sched *s, struct task *t)
{
int ret;
- struct command_task *ct = t->private_data;
+ struct command_task *ct = container_of(t, struct command_task, task);
- 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);
if (ret < 0)
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
}
static void init_command_task(struct command_task *ct)
{
ct->task.pre_select = command_pre_select;
ct->task.post_select = command_post_select;
- ct->task.event_handler = NULL;
- ct->task.private_data = ct;
+ ct->task.error = 0;
ct->fd = audiod_get_socket(); /* doesn't return on errors */
sprintf(ct->task.status, "command task");
}
-static void status_event_handler(__a_unused struct task *t)
+static void close_stat_pipe(void)
{
- struct timeval delay = {1, 0};
int i;
- struct status_task *st = t->private_data;
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t->ret));
+ if (!stat_task->ct)
+ return;
+ client_close(stat_task->ct);
+ stat_task->ct = NULL;
+ FOR_EACH_STATUS_ITEM(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);
+}
+
+/**
+ * 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();
- /* avoid busy loop if server is down */
- tv_add(now, &delay, &st->restart_barrier);
- FOR_EACH_AUDIO_FORMAT(i)
- afi[i].restart_barrier = st->restart_barrier;
+ exit(status);
}
-static void status_pre_select(struct sched *s, struct task *t)
+/* avoid busy loop if server is down */
+static void set_stat_task_restart_barrier(unsigned seconds)
{
- struct status_task *st = t->private_data;
- t->ret = 1;
- if (st->fd >= 0 && audiod_status == AUDIOD_OFF)
- close_stat_pipe();
- if (st->fd < 0 && audiod_status != AUDIOD_OFF
- && tv_diff(now, &st->restart_barrier, NULL) > 0) {
- st->fd = open_stat_pipe();
- st->loaded = 0;
- st->buf[0] = '\0';
- }
- if (st->fd >= 0 && audiod_status != AUDIOD_OFF)
- para_fd_set(st->fd, &s->rfds, &s->max_fileno);
+ struct timeval delay = {seconds, 0};
+ tv_add(now, &delay, &stat_task->restart_barrier);
}
-static void status_post_select(struct sched *s, struct task *t)
+static void try_to_close_slot(int slot_num)
{
- struct status_task *st = t->private_data;
+ struct slot_info *s = &slot[slot_num];
- t->ret = 1;
- if (st->fd < 0 || !FD_ISSET(st->fd, &s->rfds))
+ if (s->format < 0)
+ return;
+ if (s->receiver_node && s->receiver_node->task.error != -E_TASK_UNREGISTERED)
return;
- t->ret = read(st->fd, st->buf + st->loaded, STRINGSIZE - 1 - st->loaded);
- if (t->ret <= 0) {
- if (!t->ret)
- t->ret = -E_STATUS_EOF;
+ if (s->fc && s->fc->task.error != -E_TASK_UNREGISTERED)
return;
+ if (s->wng && s->wng->task.error != -E_TASK_UNREGISTERED)
+ return;
+ PARA_INFO_LOG("closing slot %d\n", slot_num);
+ wng_close(s->wng);
+ close_filters(s->fc);
+ free(s->fc);
+ close_receiver(slot_num);
+ clear_slot(slot_num);
+}
+
+/*
+ * Check if any receivers/filters/writers need to be started and do so if
+ * necessary.
+ */
+static void start_stop_decoders(struct sched *s)
+{
+ int i;
+
+ FOR_EACH_SLOT(i)
+ try_to_close_slot(i);
+ if (audiod_status != AUDIOD_ON || !stat_task->playing)
+ return kill_all_decoders(-E_NOT_PLAYING);
+ open_current_receiver(s);
+ FOR_EACH_SLOT(i) {
+ struct slot_info *sl = &slot[i];
+ struct audio_format_info *a;
+ struct timeval diff;
+
+ if (sl->format < 0)
+ continue;
+ a = &afi[sl->format];
+ if (!sl->receiver_node)
+ continue;
+ if ((!a->num_filters || sl->fc) && sl->wng)
+ continue; /* everything already started */
+ if (!a->num_filters) {
+ if (sl->receiver_node->loaded && !sl->wng) {
+ open_writers(i);
+ }
+ continue;
+ }
+ if (sl->receiver_node->loaded && !sl->fc) {
+ open_filters(i);
+ continue;
+ }
+ if (sl->wng || !sl->fc || !*sl->fc->out_loaded)
+ continue;
+ if (tv_diff(now, &initial_delay_barrier, &diff) > 0) {
+ open_writers(i);
+ continue;
+ }
+ PARA_INFO_LOG("initial delay: %lu ms left\n", tv2ms(&diff));
+ if (tv_diff(&s->timeout, &diff, NULL) > 0) {
+ s->timeout = diff;
+ }
}
- st->buf[t->ret + st->loaded] = '\0';
- st->loaded = for_each_line(st->buf, t->ret + st->loaded,
- &check_stat_line);
+}
+
+
+/* restart the client task if necessary */
+static void status_pre_select(struct sched *s, struct task *t)
+{
+ struct status_task *st = container_of(t, struct status_task, task);
+
+ if (audiod_status == AUDIOD_OFF) {
+ if (!st->ct)
+ goto out;
+ if (st->ct->task.error >= 0) {
+ st->ct->task.error = -E_AUDIOD_OFF;
+ goto out;
+ }
+ if (st->ct->task.error != -E_TASK_UNREGISTERED)
+ goto out;
+ close_stat_pipe();
+ st->clock_diff_count = conf.clock_diff_count_arg;
+ goto out;
+ }
+ if (st->ct) {
+ unsigned bytes_left;
+ if (st->ct->task.error < 0) {
+ if (st->ct->task.error != -E_TASK_UNREGISTERED)
+ goto out;
+ close_stat_pipe();
+ goto out;
+ }
+ if (st->ct->status != CL_RECEIVING)
+ goto out;
+ bytes_left = for_each_line(st->ct->buf, st->ct->loaded,
+ &check_stat_line, NULL);
+ if (st->ct->loaded != bytes_left) {
+ st->last_status_read = *now;
+ st->ct->loaded = bytes_left;
+ } else {
+ struct timeval diff;
+ tv_diff(now, &st->last_status_read, &diff);
+ if (diff.tv_sec > 61)
+ st->ct->task.error = -E_STATUS_TIMEOUT;
+ }
+ goto out;
+ }
+ if (tv_diff(now, &st->restart_barrier, NULL) < 0)
+ goto out;
+ if (st->clock_diff_count) { /* get status only one time */
+ char *argv[] = {"audiod", "stat", "1", NULL};
+ int argc = 3;
+ PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count);
+ st->clock_diff_count--;
+ client_open(argc, argv, &st->ct);
+ set_stat_task_restart_barrier(2);
+
+ } else {
+ char *argv[] = {"audiod", "stat", NULL};
+ int argc = 2;
+ client_open(argc, argv, &st->ct);
+ set_stat_task_restart_barrier(5);
+ }
+ st->last_status_read = *now;
+out:
+ start_stop_decoders(s);
}
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->fd = -1;
st->sa_time_diff_sign = 1;
+ st->clock_diff_count = conf.clock_diff_count_arg;
+ st->current_audio_format_num = -1;
sprintf(st->task.status, "status task");
}
return;
}
if (strcmp(conf.mode_arg, "on"))
- PARA_WARNING_LOG("%s", "invalid mode\n");
+ PARA_WARNING_LOG("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;
+ static struct sched s;
struct command_task command_task_struct, *cmd_task = &command_task_struct;
- struct task audiod_task_struct, *audiod_task = &audiod_task_struct;
+ struct audiod_cmdline_parser_params params = {
+ .override = 0,
+ .initialize = 1,
+ .check_required = 0,
+ .check_ambiguity = 0,
+ .print_errors = 1
+ };
valid_fd_012();
- cmdline_parser(argc, argv, &conf);
+ audiod_cmdline_parser_ext(argc, argv, &conf, ¶ms);
+ HANDLE_VERSION_FLAG("audiod", conf);
para_drop_privileges(conf.user_arg, conf.group_arg);
- cf = configfile_exists();
- if (cf) {
- if (cmdline_parser_configfile(cf, &conf, 0, 0, 0)) {
- PARA_EMERG_LOG("%s", "parse error in config file\n");
+ config_file = configfile_exists();
+ if (config_file) {
+ params.override = 0;
+ params.initialize = 0;
+ params.check_required = 1;
+ params.check_ambiguity = 0;
+ params.print_errors = 1;
+ if (audiod_cmdline_parser_config_file(config_file, &conf, ¶ms)) {
+ PARA_EMERG_LOG("parse error in config file\n");
exit(EXIT_FAILURE);
}
+ free(config_file);
}
if (conf.logfile_given)
logfile = open_log(conf.logfile_arg);
log_welcome("para_audiod", conf.loglevel_arg);
i = init_stream_io();
if (i < 0) {
- PARA_EMERG_LOG("init stream io error: %s\n", PARA_STRERROR(-i));
+ PARA_EMERG_LOG("init stream io error: %s\n", para_strerror(-i));
exit(EXIT_FAILURE);
}
server_uptime(UPTIME_SET);
init_grabbing();
setup_signal_handling();
signal_setup_default(sig_task);
- sig_task->task.event_handler = signal_event_handler;
init_status_task(stat_task);
init_command_task(cmd_task);
- init_audiod_task(audiod_task);
if (conf.daemon_given)
daemon_init();
register_task(&sig_task->task);
register_task(&cmd_task->task);
register_task(&stat_task->task);
- register_task(audiod_task);
- s.default_timeout.tv_sec = 3;
+ s.default_timeout.tv_sec = 0;
s.default_timeout.tv_usec = 99 * 1000;
- ret = sched(&s);
+ ret = schedule(&s);
- PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
+ PARA_EMERG_LOG("%s\n", para_strerror(-ret));
return EXIT_FAILURE;
}
projects / paraslash.git / blobdiff