2 * Copyright (C) 2005-2006 Andre Noll <noll@mathematik.tu-darmstadt.de>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file audiod.c the paraslash's audio daemon */
23 #include "audiod.cmdline.h"
28 #include "grab_client.cmdline.h"
29 #include "grab_client.h"
30 #include "client.cmdline.h"
38 #include "write_common.h"
42 /** define the array of error lists needed by para_audiod */
44 /** define the array containing all supported audio formats */
45 const char *audio_formats[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL};
47 /** defines how to handle one supported audio format */
48 struct audio_format_info {
49 /** pointer to the receiver for this audio format */
50 struct receiver *receiver;
51 /** the receiver configuration */
53 /** the number of filters that should be activated for this audio format */
54 unsigned int num_filters;
55 /** pointer to the array of filters to be activated */
56 struct filter **filters;
57 /** pointer to the array of filter configurations */
59 /** the number of filters that should be activated for this audio format */
60 unsigned int num_writers;
61 /** pointer to the array of writers to be activated */
62 struct writer **writers;
63 /** pointer to the array of writer configurations */
65 /** do not start receiver/filters/writer before this time */
66 struct timeval restart_barrier;
69 struct slot_info slot[MAX_STREAM_SLOTS];
72 int audiod_status = AUDIOD_ON;
74 struct audiod_args_info conf;
75 static char *socket_name;
77 static struct audio_format_info afi[NUM_AUDIO_FORMATS];
79 static struct signal_task signal_task_struct, *sig_task = &signal_task_struct;
81 static struct status_task status_task_struct;
82 struct status_task *stat_task = &status_task_struct;
83 static struct timeval initial_delay_barrier;
86 * the task for handling audiod commands
88 * \sa struct task, struct sched
91 /** the local listening socket */
93 /** the associated task structure */
98 * task for signal handling
101 /** the signal pipe */
103 /** the number of the most recent signal */
105 /** the associated task structure */
109 /** iterate over all supported audio formats */
110 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
113 * get the audio format number
114 * \param name the name of the audio format
116 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
117 * \a name is not a supported audio format.
119 int get_audio_format_num(char *name)
122 FOR_EACH_AUDIO_FORMAT(i)
123 if (!strcmp(name, audio_formats[i]))
125 return -E_UNSUPPORTED_AUDIO_FORMAT;
129 * log function. first argument is loglevel.
131 void para_log(int ll, const char* fmt,...)
137 char str[MAXLINE] = "";
138 static char *hostname;
140 if (ll < conf.loglevel_arg)
143 hostname = para_hostname();
144 outfd = logfile? logfile : stderr;
147 strftime(str, MAXLINE, "%b %d %H:%M:%S", tm);
148 fprintf(outfd, "%s %s ", str, hostname);
149 if (conf.loglevel_arg <= INFO)
150 fprintf(outfd, "%i ", ll);
152 vfprintf(outfd, fmt, argp);
156 static char *configfile_exists(void)
158 static char *config_file;
161 char *home = para_homedir();
162 config_file = make_message("%s/.paraslash/audiod.conf", home);
165 return file_exists(config_file)? config_file : NULL;
168 static void setup_signal_handling(void)
170 sig_task->fd = para_signal_init();
171 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task->fd);
172 para_install_sighandler(SIGINT);
173 para_install_sighandler(SIGTERM);
174 para_install_sighandler(SIGHUP);
175 signal(SIGPIPE, SIG_IGN);
178 static void clear_slot(int slot_num)
180 struct slot_info *s = &slot[slot_num];
182 PARA_INFO_LOG("clearing slot %d\n", slot_num);
183 memset(s, 0, sizeof(struct slot_info));
187 static void close_receiver(int slot_num)
189 struct slot_info *s = &slot[slot_num];
190 struct audio_format_info *a;
192 if (s->format < 0 || !s->receiver_node)
195 PARA_NOTICE_LOG("closing %s receiver in slot %d (eof = %d)\n",
196 audio_formats[s->format] , slot_num, s->receiver_node->eof);
197 a->receiver->close(s->receiver_node);
198 free(s->receiver_node);
199 s->receiver_node = NULL;
202 static void kill_all_decoders(void)
207 struct slot_info *s = &slot[i];
208 if (s->wng && !s->wng->eof) {
209 PARA_INFO_LOG("unregistering writer node group in slot %d\n",
211 wng_unregister(s->wng);
214 if (s->fc && !s->fc->eof) {
215 PARA_INFO_LOG("unregistering filter chain in slot %d\n", i);
216 unregister_task(&s->fc->task);
219 if (s->receiver_node && !s->receiver_node->eof) {
220 PARA_INFO_LOG("unregistering receiver_node in slot %d\n", i);
221 unregister_task(&s->receiver_node->task);
222 s->receiver_node->eof = 1;
227 static int get_empty_slot(void)
238 if (s->wng || s->receiver_node || s->fc)
243 return -E_NO_MORE_SLOTS;
246 static void close_stat_pipe(void)
252 client_close(stat_task->pcd);
253 stat_task->pcd = NULL;
254 for (i = 0; i < NUM_STAT_ITEMS; i++) {
255 free(stat_task->stat_item_values[i]);
256 stat_task->stat_item_values[i] = NULL;
259 stat_task->length_seconds = 0;
260 stat_task->offset_seconds = 0;
261 audiod_status_dump();
262 stat_task->playing = 0;
263 stat_task->stat_item_values[SI_STATUS_BAR] = make_message(
264 "%s:no connection to para_server\n",
265 status_item_list[SI_STATUS_BAR]);
266 stat_client_write(stat_task->stat_item_values[SI_STATUS_BAR],
268 if (stat_task->clock_diff_count) {
269 stat_task->clock_diff_barrier.tv_sec = now->tv_sec + 1;
270 stat_task->clock_diff_barrier.tv_usec = now->tv_usec;
274 void __noreturn clean_exit(int status, const char *msg)
276 PARA_EMERG_LOG("%s\n", msg);
284 * get the number of filters
286 * \param audio_format_num the number identifying the audio format
288 * \return the number of filters for the given audio format
292 int num_filters(int audio_format_num)
294 return afi[audio_format_num].num_filters;
297 static void filter_event_handler(struct task *t)
299 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
300 struct filter_chain *fc = t->private_data;
305 static void open_filters(int slot_num)
307 struct slot_info *s = &slot[slot_num];
308 struct audio_format_info *a = &afi[s->format];
309 int nf = a->num_filters;
315 PARA_INFO_LOG("opening %s filters\n", audio_formats[s->format]);
316 s->fc = para_calloc(sizeof(struct filter_chain));
317 INIT_LIST_HEAD(&s->fc->filters);
318 s->fc->inbuf = s->receiver_node->buf;
319 s->fc->in_loaded = &s->receiver_node->loaded;
320 s->fc->input_eof = &s->receiver_node->eof;
321 s->fc->task.pre_select = filter_pre_select;
322 s->fc->task.event_handler = filter_event_handler;
323 s->fc->task.private_data = s->fc;
326 s->receiver_node->output_eof = &s->fc->eof;
327 sprintf(s->fc->task.status, "filter chain");
328 for (i = 0; i < nf; i++) {
329 struct filter_node *fn = para_calloc(sizeof(struct filter_node));
330 fn->conf = a->filter_conf[i];
332 fn->filter = a->filters[i];
333 INIT_LIST_HEAD(&fn->callbacks);
334 list_add_tail(&fn->node, &s->fc->filters);
335 fn->filter->open(fn);
336 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
337 audio_formats[s->format], i + 1, nf,
338 fn->filter->name, slot_num);
339 s->fc->outbuf = fn->buf;
340 s->fc->out_loaded = &fn->loaded;
342 register_task(&s->fc->task);
345 static void wng_event_handler(struct task *t)
347 struct writer_node_group *wng = t->private_data;
349 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t->ret));
354 static void open_writers(int slot_num)
357 struct slot_info *s = &slot[slot_num];
358 struct audio_format_info *a = &afi[s->format];
360 PARA_INFO_LOG("opening %s writers\n", audio_formats[s->format]);
362 s->wng = setup_default_wng();
364 s->wng = wng_new(a->num_writers);
366 s->wng->buf = s->fc->outbuf;
367 s->wng->loaded = s->fc->out_loaded;
368 s->wng->input_eof = &s->fc->eof;
369 s->wng->channels = &s->fc->channels;
370 s->wng->samplerate = &s->fc->samplerate;
371 s->fc->output_eof = &s->wng->eof;
372 PARA_INFO_LOG("samplerate: %d\n", *s->wng->samplerate);
374 s->wng->buf = s->receiver_node->buf;
375 s->wng->loaded = &s->receiver_node->loaded;
376 s->wng->input_eof = &s->receiver_node->eof;
378 s->wng->task.event_handler = wng_event_handler;
379 for (i = 0; i < a->num_writers; i++) {
380 s->wng->writer_nodes[i].conf = a->writer_conf[i];
381 s->wng->writer_nodes[i].writer = a->writers[i];
383 ret = wng_open(s->wng);
385 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
389 activate_inactive_grab_clients(slot_num, s->format, &s->fc->filters);
392 static void rn_event_handler(struct task *t)
394 struct receiver_node *rn = t->private_data;
395 const struct timeval restart_delay = {0, 10 * 1000};
398 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
401 /* set restart barrier */
403 if (slot[i].receiver_node != rn)
405 tv_add(now, &restart_delay, &afi[slot[i].format].restart_barrier);
409 static int open_receiver(int format)
411 struct audio_format_info *a = &afi[format];
414 struct receiver_node *rn;
415 const struct timeval restart_delay = {1, 0};
417 ret = get_empty_slot();
423 s->receiver_node = para_calloc(sizeof(struct receiver_node));
424 rn = s->receiver_node;
425 rn->receiver = a->receiver;
426 rn->conf = a->receiver_conf;
427 ret = a->receiver->open(s->receiver_node);
429 free(s->receiver_node);
430 s->receiver_node = NULL;
433 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
434 audio_formats[s->format], a->receiver->name, slot_num);
435 rn->task.private_data = s->receiver_node;
436 rn->task.pre_select = a->receiver->pre_select;
437 rn->task.post_select = a->receiver->post_select;
438 rn->task.event_handler = rn_event_handler;
439 sprintf(rn->task.status, "%s receiver node", rn->receiver->name);
440 register_task(&rn->task);
443 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
444 tv_add(now, &restart_delay, &afi[format].restart_barrier);
448 static int receiver_running(int format)
453 struct slot_info *s = &slot[i];
454 if (s->format == format && s->receiver_node
455 && !s->receiver_node->eof)
461 static int open_current_receiver(struct sched *s)
465 char *audio_format = stat_task->stat_item_values[SI_FORMAT];
467 if (!audio_format || !stat_task->pcd)
469 i = get_audio_format_num(audio_format + strlen(
470 status_item_list[SI_FORMAT]) + 1);
473 if (receiver_running(i))
475 if (tv_diff(now, &afi[i].restart_barrier, &diff) < 0) {
479 return open_receiver(i) < 0? 0 : 1;
482 static void compute_time_diff(const struct timeval *status_time)
484 struct timeval tmp, diff;
486 int sign, sa_time_diff_sign = stat_task->sa_time_diff_sign;
487 const struct timeval max_deviation = {0, 500 * 1000};
488 const int time_smooth = 5;
490 sign = tv_diff(status_time, now, &diff);
491 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
492 // sign, sa_time_diff_sign);
494 sa_time_diff_sign = sign;
495 stat_task->sa_time_diff = diff;
500 int s = tv_diff(&diff, &stat_task->sa_time_diff, &tmp);
501 if (tv_diff(&max_deviation, &tmp, NULL) < 0)
502 PARA_WARNING_LOG("time diff jump: %lims\n",
506 sa_time_diff_sign = tv_convex_combination(
507 sa_time_diff_sign * time_smooth, &stat_task->sa_time_diff,
508 count > 10? sign : sign * time_smooth, &diff,
510 stat_task->sa_time_diff = tmp;
511 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
514 sa_time_diff_sign ? "+" : "-",
515 tv2ms(&stat_task->sa_time_diff)
518 stat_task->sa_time_diff_sign = sa_time_diff_sign;
521 static void check_stat_line(char *line)
525 long unsigned sec, usec;
528 // PARA_INFO_LOG("line: %s\n", line);
531 itemnum = stat_line_valid(line);
533 PARA_WARNING_LOG("invalid status line: %s\n", line);
536 if (stat_task->clock_diff_count && itemnum != SI_CURRENT_TIME)
538 tmp = make_message("%s\n", line);
539 stat_client_write(tmp, itemnum);
541 free(stat_task->stat_item_values[itemnum]);
542 stat_task->stat_item_values[itemnum] = para_strdup(line);
543 ilen = strlen(status_item_list[itemnum]);
546 stat_task->playing = strstr(line, "playing")? 1 : 0;
549 stat_task->offset_seconds = atoi(line + ilen + 1);
552 stat_task->length_seconds = atoi(line + ilen + 1);
554 case SI_STREAM_START:
555 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
556 struct timeval a_start, delay;
557 delay.tv_sec = conf.stream_delay_arg / 1000;
558 delay.tv_usec = (conf.stream_delay_arg % 1000) * 1000;
559 stat_task->server_stream_start.tv_sec = sec;
560 stat_task->server_stream_start.tv_usec = usec;
561 if (stat_task->sa_time_diff_sign < 0)
562 tv_add(&stat_task->server_stream_start,
563 &stat_task->sa_time_diff, &a_start);
565 tv_diff(&stat_task->server_stream_start,
566 &stat_task->sa_time_diff, &a_start);
567 tv_add(&a_start, &delay, &initial_delay_barrier);
570 case SI_CURRENT_TIME:
571 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
572 struct timeval tv = {sec, usec};
573 compute_time_diff(&tv);
575 if (stat_task->clock_diff_count)
576 stat_task->clock_diff_count--;
581 static void handle_signal(int sig)
587 PARA_EMERG_LOG("terminating on signal %d\n", sig);
588 clean_exit(EXIT_FAILURE, "caught deadly signal");
593 static void try_to_close_slot(int slot_num)
595 struct slot_info *s = &slot[slot_num];
599 if (s->receiver_node && !s->receiver_node->eof)
601 if (s->fc && !s->fc->eof)
603 if (s->wng && !s->wng->eof)
605 PARA_INFO_LOG("closing slot %d \n", slot_num);
607 close_filters(s->fc);
609 close_receiver(slot_num);
610 clear_slot(slot_num);
614 * Check if any receivers/filters/writers need to be started and do so if
615 * neccessary. Since the pre_select function didn't have a chance yet to put
616 * file descriptors into the fd sets given by s, make the upcoming select()
617 * return immediately to avoid a long timeout in case we started something.
619 static void audiod_pre_select(struct sched *s, __a_unused struct task *t)
622 struct timeval min_delay = {0, 1};
625 if (audiod_status != AUDIOD_ON || !stat_task->playing)
626 return kill_all_decoders();
627 if (open_current_receiver(s))
628 s->timeout = min_delay;
630 struct slot_info *sl = &slot[i];
631 struct audio_format_info *a;
636 a = &afi[sl->format];
637 if (!sl->receiver_node)
639 if (!a->num_filters) {
640 if (sl->receiver_node->loaded && !sl->wng) {
642 s->timeout = min_delay;
646 if (sl->receiver_node->loaded && !sl->fc) {
648 s->timeout = min_delay;
651 if (!sl->fc || !*sl->fc->out_loaded || sl->wng)
653 if (tv_diff(now, &initial_delay_barrier, &diff) > 0) {
655 s->timeout = min_delay;
658 PARA_INFO_LOG("inital delay: %lu ms left\n", tv2ms(&diff));
659 if (tv_diff(&s->timeout, &diff, NULL) > 0) {
665 static void audiod_post_select(__a_unused struct sched *s,
666 __a_unused struct task *t)
672 try_to_close_slot(i);
675 static void init_audiod_task(struct task *t)
677 t->pre_select = audiod_pre_select;
678 t->post_select = audiod_post_select;
679 t->event_handler = NULL;
681 sprintf(t->status, "audiod task");
684 static int parse_stream_command(const char *txt, char **cmd)
686 char *p = strchr(txt, ':');
690 return -E_MISSING_COLON;
692 FOR_EACH_AUDIO_FORMAT(i) {
693 if (strncmp(txt, audio_formats[i], strlen(audio_formats[i])))
698 return -E_UNSUPPORTED_AUDIO_FORMAT;
701 static int add_filter(int format, char *cmdline)
703 struct audio_format_info *a = &afi[format];
704 int filter_num, nf = a->num_filters;
706 filter_num = check_filter_arg(cmdline, &a->filter_conf[nf]);
709 a->filters[nf] = &filters[filter_num];
711 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf + 1,
712 a->filters[nf]->name);
716 static int init_writers(void)
720 struct audio_format_info *a;
722 init_supported_writers();
723 nw = PARA_MAX(1, conf.writer_given);
724 PARA_INFO_LOG("maximal number of writers: %d\n", nw);
725 FOR_EACH_AUDIO_FORMAT(i) {
727 a->writer_conf = para_malloc(nw * sizeof(void *));
728 a->writers = para_malloc(nw * sizeof(struct writer *));
731 for (i = 0; i < conf.writer_given; i++) {
734 ret = parse_stream_command(conf.writer_arg[i], &cmd);
739 wconf = check_writer_arg(cmd, &writer_num);
744 a->writers[nw] = &writers[writer_num];
745 a->writer_conf[nw] = wconf;
746 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats[ret],
747 nw, writer_names[writer_num]);
755 static int init_receivers(void)
757 int i, ret, receiver_num;
759 struct audio_format_info *a;
761 for (i = 0; receivers[i].name; i++) {
762 PARA_INFO_LOG("initializing %s receiver\n", receivers[i].name);
763 receivers[i].init(&receivers[i]);
765 for (i = conf.receiver_given - 1; i >= 0; i--) {
766 char *arg = conf.receiver_arg[i];
767 char *recv_arg = strchr(arg, ':');
768 ret = -E_MISSING_COLON;
773 ret = get_audio_format_num(arg);
776 afi[ret].receiver_conf = check_receiver_arg(recv_arg, &receiver_num);
777 if (!afi[ret].receiver_conf) {
778 ret = -E_RECV_SYNTAX;
781 afi[ret].receiver = &receivers[receiver_num];
783 /* use the first available receiver with no arguments
784 * for those audio formats for which no receiver
787 cmd = para_strdup(receivers[0].name);
788 FOR_EACH_AUDIO_FORMAT(i) {
790 if (a->receiver_conf)
792 a->receiver_conf = check_receiver_arg(cmd, &receiver_num);
793 if (!a->receiver_conf)
794 return -E_RECV_SYNTAX;
795 a->receiver = &receivers[receiver_num];
803 static int init_default_filters(void)
807 FOR_EACH_AUDIO_FORMAT(i) {
808 struct audio_format_info *a = &afi[i];
813 continue; /* no default -- nothing to to */
814 /* add "dec" to audio format name */
815 tmp = make_message("%sdec", audio_formats[i]);
816 for (j = 0; filters[j].name; j++)
817 if (!strcmp(tmp, filters[j].name))
820 ret = -E_UNSUPPORTED_FILTER;
821 if (!filters[j].name)
823 tmp = para_strdup(filters[j].name);
824 ret = add_filter(i, tmp);
828 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats[i],
835 static int init_filters(void)
839 filter_init(filters);
840 nf = PARA_MAX(1, conf.filter_given);
841 PARA_INFO_LOG("maximal number of filters: %d\n", nf);
842 FOR_EACH_AUDIO_FORMAT(i) {
843 afi[i].filter_conf = para_malloc(nf * sizeof(void *));
844 afi[i].filters = para_malloc(nf * sizeof(struct filter *));
846 if (!conf.no_default_filters_given)
847 return init_default_filters();
848 for (i = 0; i < conf.filter_given; i++) {
849 char *arg = conf.filter_arg[i];
850 char *filter_name = strchr(arg, ':');
851 ret = -E_MISSING_COLON;
856 ret = get_audio_format_num(arg);
859 ret = add_filter(ret, filter_name);
863 ret = init_default_filters(); /* use default values for the rest */
868 static int init_stream_io(void)
872 ret = init_writers();
875 ret = init_receivers();
878 ret = init_filters();
884 static int audiod_get_socket(void)
886 struct sockaddr_un unix_addr;
889 if (conf.socket_given)
890 socket_name = para_strdup(conf.socket_arg);
892 char *hn = para_hostname();
893 socket_name = make_message("/var/paraslash/audiod_socket.%s",
897 PARA_NOTICE_LOG("local socket: %s\n", socket_name);
898 if (conf.force_given)
900 fd = create_pf_socket(socket_name, &unix_addr,
901 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
903 PARA_EMERG_LOG("%s", "can not connect to socket\n");
904 exit(EXIT_FAILURE); /* do not unlink socket */
906 if (listen(fd , 5) < 0) {
907 PARA_EMERG_LOG("%s", "can not listen on socket\n");
908 exit(EXIT_FAILURE); /* do not unlink socket */
910 mark_fd_nonblock(fd);
914 static void signal_event_handler(struct task *t)
916 struct signal_task *st = t->private_data;
918 if (t->ret != -E_SIGNAL_CAUGHT)
919 PARA_ERROR_LOG("%s (ignored)\n", PARA_STRERROR(-t->ret));
921 handle_signal(st->signum);
924 static void signal_pre_select(struct sched *s, struct task *t)
926 struct signal_task *st = t->private_data;
928 para_fd_set(st->fd, &s->rfds, &s->max_fileno);
931 static void signal_post_select(struct sched *s, struct task *t)
933 struct signal_task *st = t->private_data;
935 if (!FD_ISSET(st->fd, &s->rfds))
937 t->ret = -E_SIGNAL_CAUGHT;
938 st->signum = para_next_signal();
941 static void signal_setup_default(struct signal_task *st)
943 st->task.pre_select = signal_pre_select;
944 st->task.post_select = signal_post_select;
945 st->task.private_data = st;
946 sprintf(st->task.status, "signal task");
949 static void command_pre_select(struct sched *s, struct task *t)
951 struct command_task *ct = t->private_data;
953 para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
957 static void command_post_select(struct sched *s, struct task *t)
960 struct command_task *ct = t->private_data;
962 t->ret = 1; /* always successful */
963 audiod_status_dump();
964 if (!FD_ISSET(ct->fd, &s->rfds))
966 ret = handle_connect(ct->fd);
968 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
971 static void init_command_task(struct command_task *ct)
973 ct->task.pre_select = command_pre_select;
974 ct->task.post_select = command_post_select;
975 ct->task.event_handler = NULL;
976 ct->task.private_data = ct;
977 ct->fd = audiod_get_socket(); /* doesn't return on errors */
978 sprintf(ct->task.status, "command task");
981 static void client_task_event_handler(__a_unused struct task *t)
983 struct private_client_data *pcd = t->private_data;
984 if (t->ret == -E_HANDSHAKE_COMPLETE)
990 static void status_event_handler(__a_unused struct task *t)
992 struct timeval delay = {1, 0};
994 struct status_task *st = t->private_data;
996 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t->ret));
998 /* avoid busy loop if server is down */
999 tv_add(now, &delay, &st->restart_barrier);
1000 FOR_EACH_AUDIO_FORMAT(i)
1001 afi[i].restart_barrier = st->restart_barrier;
1004 static void status_pre_select(struct sched *s, struct task *t)
1006 struct status_task *st = t->private_data;
1009 if (st->pcd && (audiod_status == AUDIOD_OFF || st->pcd->eof))
1011 if (st->pcd || audiod_status == AUDIOD_OFF)
1013 if (!st->clock_diff_count && tv_diff(now, &st->restart_barrier, NULL)
1016 if (st->clock_diff_count) {
1017 char *argv[] = {"audiod", "stat", "1", NULL};
1019 if (tv_diff(now, &st->clock_diff_barrier, NULL) < 0)
1021 PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count);
1022 t->ret = client_parse_config(argc, argv, &st->pcd);
1025 char *argv[] = {"audiod", "stat", NULL};
1027 t->ret = client_parse_config(argc, argv, &st->pcd);
1032 t->ret = client_open(st->pcd);
1035 st->pcd->task.event_handler = client_task_event_handler;
1036 s->timeout.tv_sec = 0;
1037 s->timeout.tv_usec = 1;
1040 static void status_post_select(__a_unused struct sched *s, struct task *t)
1042 struct status_task *st = t->private_data;
1043 unsigned bytes_left;
1046 if (!st->pcd || st->pcd->status != CL_RECEIVING)
1048 bytes_left = for_each_line(st->pcd->buf, st->pcd->loaded,
1050 if (st->pcd->loaded != bytes_left) {
1051 st->last_status_read = *now;
1052 st->pcd->loaded = bytes_left;
1054 struct timeval diff;
1055 tv_diff(now, &st->last_status_read, &diff);
1056 if (diff.tv_sec > 61)
1061 static void init_status_task(struct status_task *st)
1063 memset(st, 0, sizeof(struct status_task));
1064 st->task.pre_select = status_pre_select;
1065 st->task.post_select = status_post_select;
1066 st->task.event_handler = status_event_handler;
1067 st->task.private_data = st;
1068 st->sa_time_diff_sign = 1;
1069 st->clock_diff_count = conf.clock_diff_count_arg;
1070 sprintf(st->task.status, "status task");
1073 static void set_initial_status(void)
1075 audiod_status = AUDIOD_ON;
1076 if (!conf.mode_given)
1078 if (!strcmp(conf.mode_arg, "sb")) {
1079 audiod_status = AUDIOD_STANDBY;
1082 if (!strcmp(conf.mode_arg, "off")) {
1083 audiod_status = AUDIOD_OFF;
1086 if (strcmp(conf.mode_arg, "on"))
1087 PARA_WARNING_LOG("%s", "invalid mode\n");
1090 int main(int argc, char *argv[])
1095 struct command_task command_task_struct, *cmd_task = &command_task_struct;
1096 struct task audiod_task_struct, *audiod_task = &audiod_task_struct;
1099 audiod_cmdline_parser(argc, argv, &conf);
1100 para_drop_privileges(conf.user_arg, conf.group_arg);
1101 cf = configfile_exists();
1103 if (audiod_cmdline_parser_configfile(cf, &conf, 0, 0, 0)) {
1104 PARA_EMERG_LOG("%s", "parse error in config file\n");
1108 if (conf.logfile_given)
1109 logfile = open_log(conf.logfile_arg);
1110 log_welcome("para_audiod", conf.loglevel_arg);
1111 i = init_stream_io();
1113 PARA_EMERG_LOG("init stream io error: %s\n", PARA_STRERROR(-i));
1116 server_uptime(UPTIME_SET);
1117 set_initial_status();
1121 setup_signal_handling();
1122 signal_setup_default(sig_task);
1123 sig_task->task.event_handler = signal_event_handler;
1125 init_status_task(stat_task);
1126 init_command_task(cmd_task);
1127 init_audiod_task(audiod_task);
1129 if (conf.daemon_given)
1132 register_task(&sig_task->task);
1133 register_task(&cmd_task->task);
1134 register_task(&stat_task->task);
1135 register_task(audiod_task);
1136 s.default_timeout.tv_sec = 0;
1137 s.default_timeout.tv_usec = 99 * 1000;
1140 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
1141 return EXIT_FAILURE;