2 * Copyright (C) 2005-2008 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file audiod.c the paraslash's audio daemon */
14 #include "audiod.cmdline.h"
20 #include "grab_client.cmdline.h"
21 #include "grab_client.h"
22 #include "client.cmdline.h"
30 #include "write_common.h"
33 /** define the array of error lists needed by para_audiod */
35 /** define the array containing all supported audio formats */
36 const char *audio_formats[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL};
38 /** Defines how audiod handles one supported audio format. */
39 struct audio_format_info {
40 /** pointer to the receiver for this audio format */
41 struct receiver *receiver;
42 /** the receiver configuration */
44 /** the number of filters that should be activated for this audio format */
45 unsigned int num_filters;
46 /** Array of filter numbers to be activated. */
47 unsigned *filter_nums;
48 /** Pointer to the array of filter configurations. */
50 /** the number of filters that should be activated for this audio format */
51 unsigned int num_writers;
52 /** pointer to the array of writers to be activated */
53 struct writer **writers;
54 /** pointer to the array of writer configurations */
56 /** do not start receiver/filters/writer before this time */
57 struct timeval restart_barrier;
61 * para_audiod uses \p MAX_STREAM_SLOTS different slots, each of which may
62 * be associated with a receiver/filter/writer triple. This array holds all
63 * information on the status of these slots.
65 * \sa struct slot_info
67 struct slot_info slot[MAX_STREAM_SLOTS];
70 /** The array of status items sent by para_server. */
71 char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
74 * the current mode of operation of which can be changed by the on/off/cycle
75 * commands. It is either, AUDIOD_OFF, AUDIOD_ON or AUDIOD_STANDBY.
77 int audiod_status = AUDIOD_ON;
80 * the gengetopt args_info struct that holds information on all command line
83 struct audiod_args_info conf;
85 static char *socket_name;
87 static struct audio_format_info afi[NUM_AUDIO_FORMATS];
89 static struct signal_task signal_task_struct, *sig_task = &signal_task_struct;
91 static struct status_task status_task_struct;
94 * the task that calls the status command of para_server
96 * \sa struct status_task
98 static struct status_task *stat_task = &status_task_struct;
99 static struct timeval initial_delay_barrier;
102 * the task for handling audiod commands
104 * \sa struct task, struct sched
106 struct command_task {
107 /** the local listening socket */
109 /** the associated task structure */
113 /** iterate over all supported audio formats */
114 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
117 * get the audio format number
118 * \param name the name of the audio format
120 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
121 * \a name is not a supported audio format.
123 int get_audio_format_num(char *name)
127 while (para_isspace(*name))
129 FOR_EACH_AUDIO_FORMAT(i)
130 if (!strcmp(name, audio_formats[i]))
132 return -E_UNSUPPORTED_AUDIO_FORMAT;
135 char *get_time_string(struct timeval *newest_stime)
137 struct timeval diff, adj_stream_start, tmp;
138 int total = 0, use_server_time = 1,
139 length_seconds = stat_task->length_seconds;
141 if (!stat_task->playing) {
144 return make_message("%s:\n", status_item_list[SI_PLAY_TIME]);
146 if (audiod_status == AUDIOD_OFF)
148 if (stat_task->sa_time_diff_sign > 0)
149 tv_diff(&stat_task->server_stream_start, &stat_task->sa_time_diff,
152 tv_add(&stat_task->server_stream_start, &stat_task->sa_time_diff,
154 tmp = adj_stream_start;
155 if (newest_stime && audiod_status == AUDIOD_ON) {
156 tv_diff(newest_stime, &adj_stream_start, &diff);
157 if (tv2ms(&diff) < 5000) {
162 tv_diff(now, &tmp, &diff);
163 total = diff.tv_sec + stat_task->offset_seconds;
164 if (total > length_seconds)
165 total = length_seconds;
170 "%s: %s%d:%02d [%d:%02d] (%d%%/%d:%02d)\n",
171 status_item_list[SI_PLAY_TIME],
172 use_server_time? "~" : "",
175 (length_seconds - total) / 60,
176 (length_seconds - total) % 60,
177 length_seconds? (total * 100 + length_seconds / 2) /
185 * the log function of para_audiod
188 * \param fmt the format string
190 __printf_2_3 void para_log(int ll, const char* fmt,...)
196 char str[MAXLINE] = "";
197 static char *hostname;
199 if (ll < conf.loglevel_arg)
201 if (!logfile && conf.daemon_given)
204 hostname = para_hostname();
205 outfd = logfile? logfile : stderr;
208 strftime(str, MAXLINE, "%b %d %H:%M:%S", tm);
209 fprintf(outfd, "%s %s ", str, hostname);
210 if (conf.loglevel_arg <= INFO)
211 fprintf(outfd, "%i ", ll);
213 vfprintf(outfd, fmt, argp);
217 static char *configfile_exists(void)
219 char *home = para_homedir();
220 char *config_file = make_message("%s/.paraslash/audiod.conf",
223 if (file_exists(config_file))
229 static void setup_signal_handling(void)
231 sig_task->fd = para_signal_init();
232 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task->fd);
233 para_install_sighandler(SIGINT);
234 para_install_sighandler(SIGTERM);
235 para_install_sighandler(SIGHUP);
236 signal(SIGPIPE, SIG_IGN);
239 static void clear_slot(int slot_num)
241 struct slot_info *s = &slot[slot_num];
243 PARA_INFO_LOG("clearing slot %d\n", slot_num);
244 memset(s, 0, sizeof(struct slot_info));
248 static void close_receiver(int slot_num)
250 struct slot_info *s = &slot[slot_num];
251 struct audio_format_info *a;
253 if (s->format < 0 || !s->receiver_node)
256 PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
257 audio_formats[s->format], slot_num);
258 a->receiver->close(s->receiver_node);
259 free(s->receiver_node);
260 s->receiver_node = NULL;
263 static void kill_all_decoders(int error)
268 struct slot_info *s = &slot[i];
269 if (s->wng && s->wng->task.error >= 0) {
270 PARA_INFO_LOG("deactivating wng in slot %d\n",
272 s->wng->task.error = error;
274 if (s->fc && s->fc->task.error >= 0) {
275 PARA_INFO_LOG("deactivatimg filter chain in slot %d\n", i);
276 s->fc->task.error = error;
278 if (s->receiver_node && s->receiver_node->task.error >= 0) {
279 PARA_INFO_LOG("deactivating receiver_node in slot %d\n", i);
280 s->receiver_node->task.error = error;
285 static int get_empty_slot(void)
296 if (s->wng || s->receiver_node || s->fc)
301 return -E_NO_MORE_SLOTS;
305 * get the number of filters
307 * \param audio_format_num the number identifying the audio format
309 * \return the number of filters for the given audio format
313 int num_filters(int audio_format_num)
315 return afi[audio_format_num].num_filters;
318 static void open_filters(int slot_num)
320 struct slot_info *s = &slot[slot_num];
321 struct audio_format_info *a = &afi[s->format];
322 struct filter_node *fn;
323 int nf = a->num_filters;
329 PARA_INFO_LOG("opening %s filters\n", audio_formats[s->format]);
330 s->fc = para_calloc(sizeof(struct filter_chain));
331 s->fc->filter_nodes = para_malloc(nf * sizeof(struct filter_node));
332 s->fc->inbuf = s->receiver_node->buf;
333 s->fc->in_loaded = &s->receiver_node->loaded;
334 s->fc->input_error = &s->receiver_node->task.error;
335 s->fc->task.pre_select = filter_pre_select;
336 s->fc->task.post_select = NULL;
337 s->fc->task.error = 0;
338 s->fc->num_filters = nf;
340 s->receiver_node->output_error = &s->fc->task.error;
341 sprintf(s->fc->task.status, "filter chain");
342 FOR_EACH_FILTER_NODE(fn, s->fc, i) {
343 struct filter *f = filters + a->filter_nums[i];
344 fn->filter_num = a->filter_nums[i];
345 fn->conf = a->filter_conf[i];
348 INIT_LIST_HEAD(&fn->callbacks);
350 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
351 audio_formats[s->format], i, nf, f->name, slot_num);
352 s->fc->outbuf = fn->buf;
353 s->fc->out_loaded = &fn->loaded;
355 register_task(&s->fc->task);
358 static void open_writers(int slot_num)
361 struct slot_info *s = &slot[slot_num];
362 struct audio_format_info *a = &afi[s->format];
364 PARA_INFO_LOG("opening %s writers\n", audio_formats[s->format]);
366 s->wng = setup_default_wng();
368 s->wng = wng_new(a->num_writers);
370 s->wng->buf = s->fc->outbuf;
371 s->wng->loaded = s->fc->out_loaded;
372 s->wng->input_error = &s->fc->task.error;
373 s->wng->channels = &s->fc->channels;
374 s->wng->samplerate = &s->fc->samplerate;
375 s->fc->output_error = &s->wng->task.error;
376 PARA_INFO_LOG("samplerate: %d\n", *s->wng->samplerate);
378 s->wng->buf = s->receiver_node->buf;
379 s->wng->loaded = &s->receiver_node->loaded;
380 s->wng->input_error = &s->receiver_node->task.error;
382 for (i = 0; i < a->num_writers; i++) {
383 s->wng->writer_nodes[i].conf = a->writer_conf[i];
384 s->wng->writer_nodes[i].writer = a->writers[i];
386 ret = wng_open(s->wng);
388 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
392 activate_inactive_grab_clients(slot_num, s->format, s->fc);
395 static int open_receiver(int format)
397 struct audio_format_info *a = &afi[format];
400 struct receiver_node *rn;
401 const struct timeval restart_delay = {2, 0};
403 ret = get_empty_slot();
409 s->receiver_node = para_calloc(sizeof(struct receiver_node));
410 rn = s->receiver_node;
411 rn->receiver = a->receiver;
412 rn->conf = a->receiver_conf;
413 ret = a->receiver->open(s->receiver_node);
415 free(s->receiver_node);
416 s->receiver_node = NULL;
419 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
420 audio_formats[s->format], a->receiver->name, slot_num);
421 rn->task.pre_select = a->receiver->pre_select;
422 rn->task.post_select = a->receiver->post_select;
423 sprintf(rn->task.status, "%s receiver node", rn->receiver->name);
424 register_task(&rn->task);
428 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
429 tv_add(now, &restart_delay, &afi[format].restart_barrier);
433 static int receiver_running(int format)
438 struct slot_info *s = &slot[i];
439 if (s->format == format && s->receiver_node)
445 static int open_current_receiver(struct sched *s)
448 int cafn = stat_task->current_audio_format_num;
450 if (cafn < 0 || !stat_task->ct)
452 if (receiver_running(cafn))
454 if (tv_diff(now, &afi[cafn].restart_barrier, &diff) < 0) {
458 return open_receiver(cafn) < 0? 0 : 1;
461 static unsigned compute_time_diff(const struct timeval *status_time)
463 struct timeval tmp, diff;
464 static unsigned count;
465 int sign, sa_time_diff_sign = stat_task->sa_time_diff_sign;
466 const struct timeval max_deviation = {0, 500 * 1000};
467 const int time_smooth = 5;
471 sign = tv_diff(status_time, now, &diff);
472 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
473 // sign, sa_time_diff_sign);
475 sa_time_diff_sign = sign;
476 stat_task->sa_time_diff = diff;
481 int s = tv_diff(&diff, &stat_task->sa_time_diff, &tmp);
482 if (tv_diff(&max_deviation, &tmp, NULL) < 0)
483 PARA_WARNING_LOG("time diff jump: %lims\n",
487 sa_time_diff_sign = tv_convex_combination(
488 sa_time_diff_sign * time_smooth, &stat_task->sa_time_diff,
489 count > 10? sign : sign * time_smooth, &diff,
491 stat_task->sa_time_diff = tmp;
492 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
495 sa_time_diff_sign ? "+" : "-",
496 tv2ms(&stat_task->sa_time_diff)
499 stat_task->sa_time_diff_sign = sa_time_diff_sign;
503 static int check_stat_line(char *line, __a_unused void *data)
507 long unsigned sec, usec;
510 //PARA_INFO_LOG("line: %s\n", line);
513 itemnum = stat_line_valid(line);
515 PARA_WARNING_LOG("invalid status line: %s\n", line);
518 if (stat_task->clock_diff_count && itemnum != SI_CURRENT_TIME)
520 tmp = make_message("%s\n", line);
521 stat_client_write(tmp, itemnum);
523 free(stat_item_values[itemnum]);
524 stat_item_values[itemnum] = para_strdup(line);
525 ilen = strlen(status_item_list[itemnum]);
528 stat_task->playing = strstr(line, "playing")? 1 : 0;
529 PARA_INFO_LOG("stat task playing: %d\n", stat_task->playing);
532 stat_task->offset_seconds = atoi(line + ilen + 1);
534 case SI_SECONDS_TOTAL:
535 stat_task->length_seconds = atoi(line + ilen + 1);
537 case SI_STREAM_START:
538 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
539 struct timeval a_start, delay;
540 delay.tv_sec = conf.stream_delay_arg / 1000;
541 delay.tv_usec = (conf.stream_delay_arg % 1000) * 1000;
542 stat_task->server_stream_start.tv_sec = sec;
543 stat_task->server_stream_start.tv_usec = usec;
544 if (compute_time_diff(NULL) > 2) {
545 if (stat_task->sa_time_diff_sign < 0)
546 tv_add(&stat_task->server_stream_start,
547 &stat_task->sa_time_diff, &a_start);
549 tv_diff(&stat_task->server_stream_start,
550 &stat_task->sa_time_diff, &a_start);
551 tv_add(&a_start, &delay, &initial_delay_barrier);
555 case SI_CURRENT_TIME:
556 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
557 struct timeval tv = {sec, usec};
558 compute_time_diff(&tv);
562 stat_task->current_audio_format_num = get_audio_format_num(
568 static int parse_stream_command(const char *txt, char **cmd)
570 char *p = strchr(txt, ':');
574 return -E_MISSING_COLON;
576 FOR_EACH_AUDIO_FORMAT(i) {
577 if (strncmp(txt, audio_formats[i], strlen(audio_formats[i])))
582 return -E_UNSUPPORTED_AUDIO_FORMAT;
585 static int add_filter(int format, char *cmdline)
587 struct audio_format_info *a = &afi[format];
588 int filter_num, nf = a->num_filters;
590 filter_num = check_filter_arg(cmdline, &a->filter_conf[nf]);
593 a->filter_nums[nf] = filter_num;
595 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf,
596 filters[filter_num].name);
600 static int init_writers(void)
604 struct audio_format_info *a;
606 init_supported_writers();
607 nw = PARA_MAX(1U, conf.writer_given);
608 PARA_INFO_LOG("maximal number of writers: %d\n", nw);
609 FOR_EACH_AUDIO_FORMAT(i) {
611 a->writer_conf = para_malloc(nw * sizeof(void *));
612 a->writers = para_malloc(nw * sizeof(struct writer *));
615 for (i = 0; i < conf.writer_given; i++) {
618 ret = parse_stream_command(conf.writer_arg[i], &cmd);
623 wconf = check_writer_arg(cmd, &writer_num);
628 a->writers[nw] = &writers[writer_num];
629 a->writer_conf[nw] = wconf;
630 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats[ret],
631 nw, writer_names[writer_num]);
639 static int init_receivers(void)
641 int i, ret, receiver_num;
643 struct audio_format_info *a;
645 for (i = 0; receivers[i].name; i++) {
646 PARA_INFO_LOG("initializing %s receiver\n", receivers[i].name);
647 receivers[i].init(&receivers[i]);
649 for (i = conf.receiver_given - 1; i >= 0; i--) {
650 char *arg = conf.receiver_arg[i];
651 char *recv_arg = strchr(arg, ':');
652 ret = -E_MISSING_COLON;
657 ret = get_audio_format_num(arg);
660 afi[ret].receiver_conf = check_receiver_arg(recv_arg, &receiver_num);
661 if (!afi[ret].receiver_conf) {
662 ret = -E_RECV_SYNTAX;
665 afi[ret].receiver = &receivers[receiver_num];
667 /* use the first available receiver with no arguments
668 * for those audio formats for which no receiver
671 cmd = para_strdup(receivers[0].name);
672 FOR_EACH_AUDIO_FORMAT(i) {
674 if (a->receiver_conf)
676 a->receiver_conf = check_receiver_arg(cmd, &receiver_num);
677 if (!a->receiver_conf)
678 return -E_RECV_SYNTAX;
679 a->receiver = &receivers[receiver_num];
687 static int init_default_filters(void)
691 FOR_EACH_AUDIO_FORMAT(i) {
692 struct audio_format_info *a = &afi[i];
697 continue; /* no default -- nothing to to */
698 /* add "dec" to audio format name */
699 tmp = make_message("%sdec", audio_formats[i]);
700 for (j = 0; filters[j].name; j++)
701 if (!strcmp(tmp, filters[j].name))
704 ret = -E_UNSUPPORTED_FILTER;
705 if (!filters[j].name)
707 tmp = para_strdup(filters[j].name);
708 ret = add_filter(i, tmp);
712 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats[i],
719 static int init_filters(void)
723 filter_init(filters);
724 nf = PARA_MAX(1U, conf.filter_given);
725 PARA_INFO_LOG("maximal number of filters: %d\n", nf);
726 FOR_EACH_AUDIO_FORMAT(i) {
727 afi[i].filter_conf = para_malloc(nf * sizeof(void *));
728 afi[i].filter_nums = para_malloc(nf * sizeof(unsigned));
730 if (!conf.no_default_filters_given)
731 return init_default_filters();
732 for (i = 0; i < conf.filter_given; i++) {
733 char *arg = conf.filter_arg[i];
734 char *filter_name = strchr(arg, ':');
735 ret = -E_MISSING_COLON;
740 ret = get_audio_format_num(arg);
743 ret = add_filter(ret, filter_name);
747 ret = init_default_filters(); /* use default values for the rest */
752 static int init_stream_io(void)
756 ret = init_writers();
759 ret = init_receivers();
762 ret = init_filters();
768 /* does not unlink socket on errors */
769 static int audiod_get_socket(void)
771 struct sockaddr_un unix_addr;
774 if (conf.socket_given)
775 socket_name = para_strdup(conf.socket_arg);
777 char *hn = para_hostname();
778 socket_name = make_message("/var/paraslash/audiod_socket.%s",
782 PARA_NOTICE_LOG("local socket: %s\n", socket_name);
783 if (conf.force_given)
785 ret = create_local_socket(socket_name, &unix_addr,
786 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
790 if (listen(fd , 5) < 0) {
791 ret = -ERRNO_TO_PARA_ERROR(errno);
794 ret = mark_fd_nonblocking(fd);
799 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
803 static void signal_pre_select(struct sched *s, struct task *t)
805 struct signal_task *st = container_of(t, struct signal_task, task);
806 para_fd_set(st->fd, &s->rfds, &s->max_fileno);
809 static void signal_post_select(struct sched *s, struct task *t)
811 struct signal_task *st = container_of(t, struct signal_task, task);
813 if (!FD_ISSET(st->fd, &s->rfds))
816 st->signum = para_next_signal();
817 switch (st->signum) {
821 PARA_EMERG_LOG("terminating on signal %d\n", st->signum);
822 clean_exit(EXIT_FAILURE, "caught deadly signal");
826 static void signal_setup_default(struct signal_task *st)
828 st->task.pre_select = signal_pre_select;
829 st->task.post_select = signal_post_select;
830 sprintf(st->task.status, "signal task");
833 static void command_pre_select(struct sched *s, struct task *t)
835 struct command_task *ct = container_of(t, struct command_task, task);
836 para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
839 static void command_post_select(struct sched *s, struct task *t)
842 struct command_task *ct = container_of(t, struct command_task, task);
844 audiod_status_dump();
845 if (!FD_ISSET(ct->fd, &s->rfds))
847 ret = handle_connect(ct->fd);
849 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
852 static void init_command_task(struct command_task *ct)
854 ct->task.pre_select = command_pre_select;
855 ct->task.post_select = command_post_select;
857 ct->fd = audiod_get_socket(); /* doesn't return on errors */
858 sprintf(ct->task.status, "command task");
861 static void close_stat_pipe(void)
867 client_close(stat_task->ct);
868 stat_task->ct = NULL;
869 FOR_EACH_STATUS_ITEM(i) {
870 free(stat_item_values[i]);
871 stat_item_values[i] = NULL;
874 stat_task->length_seconds = 0;
875 stat_task->offset_seconds = 0;
876 audiod_status_dump();
877 stat_task->playing = 0;
881 * close the connection to para_server and exit
883 * \param status the exit status which is passed to exit(3)
884 * \param msg the log message
886 * Log \a msg with loglevel \p EMERG, close the connection to para_server if
887 * open, and call \p exit(status). \a status should be either EXIT_SUCCESS or
892 void __noreturn clean_exit(int status, const char *msg)
894 PARA_EMERG_LOG("%s\n", msg);
901 /* avoid busy loop if server is down */
902 static void set_stat_task_restart_barrier(unsigned seconds)
904 struct timeval delay = {seconds, 0};
905 tv_add(now, &delay, &stat_task->restart_barrier);
908 static void try_to_close_slot(int slot_num)
910 struct slot_info *s = &slot[slot_num];
914 if (s->receiver_node && s->receiver_node->task.error != -E_TASK_UNREGISTERED)
916 if (s->fc && s->fc->task.error != -E_TASK_UNREGISTERED)
918 if (s->wng && s->wng->task.error != -E_TASK_UNREGISTERED)
920 PARA_INFO_LOG("closing slot %d\n", slot_num);
922 close_filters(s->fc);
924 close_receiver(slot_num);
925 clear_slot(slot_num);
929 * Check if any receivers/filters/writers need to be started and do so if
932 static void start_stop_decoders(struct sched *s)
937 try_to_close_slot(i);
938 if (audiod_status != AUDIOD_ON || !stat_task->playing)
939 return kill_all_decoders(-E_NOT_PLAYING);
940 open_current_receiver(s);
942 struct slot_info *sl = &slot[i];
943 struct audio_format_info *a;
948 a = &afi[sl->format];
949 if (!sl->receiver_node)
951 if ((!a->num_filters || sl->fc) && sl->wng)
952 continue; /* everything already started */
953 if (!a->num_filters) {
954 if (sl->receiver_node->loaded && !sl->wng) {
959 if (sl->receiver_node->loaded && !sl->fc) {
963 if (sl->wng || !sl->fc || !*sl->fc->out_loaded)
965 if (tv_diff(now, &initial_delay_barrier, &diff) > 0) {
969 PARA_INFO_LOG("initial delay: %lu ms left\n", tv2ms(&diff));
970 if (tv_diff(&s->timeout, &diff, NULL) > 0) {
977 /* restart the client task if necessary */
978 static void status_pre_select(struct sched *s, struct task *t)
980 struct status_task *st = container_of(t, struct status_task, task);
982 if (audiod_status == AUDIOD_OFF) {
985 if (st->ct->task.error >= 0) {
986 st->ct->task.error = -E_AUDIOD_OFF;
989 if (st->ct->task.error != -E_TASK_UNREGISTERED)
992 st->clock_diff_count = conf.clock_diff_count_arg;
997 if (st->ct->task.error < 0) {
998 if (st->ct->task.error != -E_TASK_UNREGISTERED)
1003 if (st->ct->status != CL_RECEIVING)
1005 bytes_left = for_each_line(st->ct->buf, st->ct->loaded,
1006 &check_stat_line, NULL);
1007 if (st->ct->loaded != bytes_left) {
1008 st->last_status_read = *now;
1009 st->ct->loaded = bytes_left;
1011 struct timeval diff;
1012 tv_diff(now, &st->last_status_read, &diff);
1013 if (diff.tv_sec > 61)
1014 st->ct->task.error = -E_STATUS_TIMEOUT;
1018 if (tv_diff(now, &st->restart_barrier, NULL) < 0)
1020 if (st->clock_diff_count) { /* get status only one time */
1021 char *argv[] = {"audiod", "stat", "1", NULL};
1023 PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count);
1024 st->clock_diff_count--;
1025 client_open(argc, argv, &st->ct);
1026 set_stat_task_restart_barrier(2);
1029 char *argv[] = {"audiod", "stat", NULL};
1031 client_open(argc, argv, &st->ct);
1032 set_stat_task_restart_barrier(5);
1034 free(stat_item_values[SI_BASENAME]);
1035 stat_item_values[SI_BASENAME] = make_message(
1036 "%s: no connection to para_server\n",
1037 status_item_list[SI_BASENAME]);
1038 stat_client_write(stat_item_values[SI_BASENAME],
1040 st->last_status_read = *now;
1042 start_stop_decoders(s);
1045 static void init_status_task(struct status_task *st)
1047 memset(st, 0, sizeof(struct status_task));
1048 st->task.pre_select = status_pre_select;
1049 st->sa_time_diff_sign = 1;
1050 st->clock_diff_count = conf.clock_diff_count_arg;
1051 st->current_audio_format_num = -1;
1052 sprintf(st->task.status, "status task");
1055 static void set_initial_status(void)
1057 audiod_status = AUDIOD_ON;
1058 if (!conf.mode_given)
1060 if (!strcmp(conf.mode_arg, "sb")) {
1061 audiod_status = AUDIOD_STANDBY;
1064 if (!strcmp(conf.mode_arg, "off")) {
1065 audiod_status = AUDIOD_OFF;
1068 if (strcmp(conf.mode_arg, "on"))
1069 PARA_WARNING_LOG("invalid mode\n");
1073 * the main function of para_audiod
1075 * \param argc usual argument count
1076 * \param argv usual argument vector
1078 * \return EXIT_SUCCESS or EXIT_FAILURE
1080 * \sa para_audiod(1)
1082 int main(int argc, char *argv[])
1086 static struct sched s;
1087 struct command_task command_task_struct, *cmd_task = &command_task_struct;
1088 struct audiod_cmdline_parser_params params = {
1091 .check_required = 0,
1092 .check_ambiguity = 0,
1097 audiod_cmdline_parser_ext(argc, argv, &conf, ¶ms);
1098 HANDLE_VERSION_FLAG("audiod", conf);
1099 para_drop_privileges(conf.user_arg, conf.group_arg);
1100 config_file = configfile_exists();
1102 params.override = 0;
1103 params.initialize = 0;
1104 params.check_required = 1;
1105 params.check_ambiguity = 0;
1106 params.print_errors = 1;
1107 if (audiod_cmdline_parser_config_file(config_file, &conf, ¶ms)) {
1108 PARA_EMERG_LOG("parse error in config file\n");
1113 if (conf.logfile_given)
1114 logfile = open_log(conf.logfile_arg);
1115 log_welcome("para_audiod", conf.loglevel_arg);
1116 i = init_stream_io();
1118 PARA_EMERG_LOG("init stream io error: %s\n", para_strerror(-i));
1121 server_uptime(UPTIME_SET);
1122 set_initial_status();
1126 setup_signal_handling();
1127 signal_setup_default(sig_task);
1129 init_status_task(stat_task);
1130 init_command_task(cmd_task);
1132 if (conf.daemon_given)
1135 register_task(&sig_task->task);
1136 register_task(&cmd_task->task);
1137 register_task(&stat_task->task);
1138 s.default_timeout.tv_sec = 0;
1139 s.default_timeout.tv_usec = 99 * 1000;
1142 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
1143 return EXIT_FAILURE;