2 * Copyright (C) 2005-2009 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 void parse_config_or_die(void)
221 if (conf.config_file_given)
222 config_file = para_strdup(conf.config_file_arg);
224 char *home = para_homedir();
225 config_file = make_message("%s/.paraslash/audiod.conf", home);
228 if (conf.config_file_given && !file_exists(config_file)) {
229 PARA_EMERG_LOG("can not read config file %s\n", config_file);
233 struct audiod_cmdline_parser_params params = {
237 .check_ambiguity = 0,
240 if (audiod_cmdline_parser_config_file(config_file, &conf, ¶ms)) {
241 PARA_EMERG_LOG("parse error in config file\n");
252 static void setup_signal_handling(void)
254 sig_task->fd = para_signal_init();
255 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task->fd);
256 para_install_sighandler(SIGINT);
257 para_install_sighandler(SIGTERM);
258 para_install_sighandler(SIGHUP);
259 signal(SIGPIPE, SIG_IGN);
262 static void clear_slot(int slot_num)
264 struct slot_info *s = &slot[slot_num];
266 PARA_INFO_LOG("clearing slot %d\n", slot_num);
267 memset(s, 0, sizeof(struct slot_info));
271 static void close_receiver(int slot_num)
273 struct slot_info *s = &slot[slot_num];
274 struct audio_format_info *a;
276 if (s->format < 0 || !s->receiver_node)
279 PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
280 audio_formats[s->format], slot_num);
281 a->receiver->close(s->receiver_node);
282 free(s->receiver_node);
283 s->receiver_node = NULL;
286 static void kill_all_decoders(int error)
291 struct slot_info *s = &slot[i];
292 if (s->wng && s->wng->task.error >= 0) {
293 PARA_INFO_LOG("deactivating wng in slot %d\n",
295 s->wng->task.error = error;
297 if (s->fc && s->fc->task.error >= 0) {
298 PARA_INFO_LOG("deactivatimg filter chain in slot %d\n", i);
299 s->fc->task.error = error;
301 if (s->receiver_node && s->receiver_node->task.error >= 0) {
302 PARA_INFO_LOG("deactivating receiver_node in slot %d\n", i);
303 s->receiver_node->task.error = error;
308 static int get_empty_slot(void)
319 if (s->wng || s->receiver_node || s->fc)
324 return -E_NO_MORE_SLOTS;
328 * get the number of filters
330 * \param audio_format_num the number identifying the audio format
332 * \return the number of filters for the given audio format
336 int num_filters(int audio_format_num)
338 return afi[audio_format_num].num_filters;
341 static void open_filters(int slot_num)
343 struct slot_info *s = &slot[slot_num];
344 struct audio_format_info *a = &afi[s->format];
345 struct filter_node *fn;
346 int nf = a->num_filters;
352 PARA_INFO_LOG("opening %s filters\n", audio_formats[s->format]);
353 s->fc = para_calloc(sizeof(struct filter_chain));
354 s->fc->filter_nodes = para_malloc(nf * sizeof(struct filter_node));
355 s->fc->inbuf = s->receiver_node->buf;
356 s->fc->in_loaded = &s->receiver_node->loaded;
357 s->fc->input_error = &s->receiver_node->task.error;
358 s->fc->task.pre_select = filter_pre_select;
359 s->fc->task.post_select = NULL;
360 s->fc->task.error = 0;
361 s->fc->num_filters = nf;
363 s->receiver_node->output_error = &s->fc->task.error;
364 sprintf(s->fc->task.status, "filter chain");
365 FOR_EACH_FILTER_NODE(fn, s->fc, i) {
366 struct filter *f = filters + a->filter_nums[i];
367 fn->filter_num = a->filter_nums[i];
368 fn->conf = a->filter_conf[i];
371 INIT_LIST_HEAD(&fn->callbacks);
373 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
374 audio_formats[s->format], i, nf, f->name, slot_num);
375 s->fc->outbuf = fn->buf;
376 s->fc->out_loaded = &fn->loaded;
378 register_task(&s->fc->task);
381 static void open_writers(int slot_num)
384 struct slot_info *s = &slot[slot_num];
385 struct audio_format_info *a = &afi[s->format];
387 PARA_INFO_LOG("opening %s writers\n", audio_formats[s->format]);
389 s->wng = setup_default_wng();
391 s->wng = wng_new(a->num_writers);
393 s->wng->buf = s->fc->outbuf;
394 s->wng->loaded = s->fc->out_loaded;
395 s->wng->input_error = &s->fc->task.error;
396 s->wng->channels = &s->fc->channels;
397 s->wng->samplerate = &s->fc->samplerate;
398 s->fc->output_error = &s->wng->task.error;
399 PARA_INFO_LOG("samplerate: %d\n", *s->wng->samplerate);
401 s->wng->buf = s->receiver_node->buf;
402 s->wng->loaded = &s->receiver_node->loaded;
403 s->wng->input_error = &s->receiver_node->task.error;
405 for (i = 0; i < a->num_writers; i++) {
406 s->wng->writer_nodes[i].conf = a->writer_conf[i];
407 s->wng->writer_nodes[i].writer = a->writers[i];
409 ret = wng_open(s->wng);
411 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
415 activate_inactive_grab_clients(slot_num, s->format, s->fc);
418 static int open_receiver(int format)
420 struct audio_format_info *a = &afi[format];
423 struct receiver_node *rn;
424 const struct timeval restart_delay = {2, 0};
426 ret = get_empty_slot();
432 s->receiver_node = para_calloc(sizeof(struct receiver_node));
433 rn = s->receiver_node;
434 rn->receiver = a->receiver;
435 rn->conf = a->receiver_conf;
436 ret = a->receiver->open(s->receiver_node);
438 free(s->receiver_node);
439 s->receiver_node = NULL;
442 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
443 audio_formats[s->format], a->receiver->name, slot_num);
444 rn->task.pre_select = a->receiver->pre_select;
445 rn->task.post_select = a->receiver->post_select;
446 sprintf(rn->task.status, "%s receiver node", rn->receiver->name);
447 register_task(&rn->task);
451 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
452 tv_add(now, &restart_delay, &afi[format].restart_barrier);
456 static int receiver_running(int format)
461 struct slot_info *s = &slot[i];
462 if (s->format == format && s->receiver_node)
468 static int open_current_receiver(struct sched *s)
471 int cafn = stat_task->current_audio_format_num;
473 if (cafn < 0 || !stat_task->ct)
475 if (receiver_running(cafn))
477 if (tv_diff(now, &afi[cafn].restart_barrier, &diff) < 0) {
481 return open_receiver(cafn) < 0? 0 : 1;
484 static unsigned compute_time_diff(const struct timeval *status_time)
486 struct timeval tmp, diff;
487 static unsigned count;
488 int sign, sa_time_diff_sign = stat_task->sa_time_diff_sign;
489 const struct timeval max_deviation = {0, 500 * 1000};
490 const int time_smooth = 5;
494 sign = tv_diff(status_time, now, &diff);
495 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
496 // sign, sa_time_diff_sign);
498 sa_time_diff_sign = sign;
499 stat_task->sa_time_diff = diff;
504 int s = tv_diff(&diff, &stat_task->sa_time_diff, &tmp);
505 if (tv_diff(&max_deviation, &tmp, NULL) < 0)
506 PARA_WARNING_LOG("time diff jump: %lims\n",
510 sa_time_diff_sign = tv_convex_combination(
511 sa_time_diff_sign * time_smooth, &stat_task->sa_time_diff,
512 count > 10? sign : sign * time_smooth, &diff,
514 stat_task->sa_time_diff = tmp;
515 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
518 sa_time_diff_sign ? "+" : "-",
519 tv2ms(&stat_task->sa_time_diff)
522 stat_task->sa_time_diff_sign = sa_time_diff_sign;
526 static int check_stat_line(char *line, __a_unused void *data)
530 long unsigned sec, usec;
533 //PARA_INFO_LOG("line: %s\n", line);
536 itemnum = stat_line_valid(line);
538 PARA_WARNING_LOG("invalid status line: %s\n", line);
541 if (stat_task->clock_diff_count && itemnum != SI_CURRENT_TIME)
543 tmp = make_message("%s\n", line);
544 stat_client_write(tmp, itemnum);
546 free(stat_item_values[itemnum]);
547 stat_item_values[itemnum] = para_strdup(line);
548 ilen = strlen(status_item_list[itemnum]);
551 stat_task->playing = strstr(line, "playing")? 1 : 0;
552 PARA_INFO_LOG("stat task playing: %d\n", stat_task->playing);
555 stat_task->offset_seconds = atoi(line + ilen + 1);
557 case SI_SECONDS_TOTAL:
558 stat_task->length_seconds = atoi(line + ilen + 1);
560 case SI_STREAM_START:
561 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
562 struct timeval a_start, delay;
563 delay.tv_sec = conf.stream_delay_arg / 1000;
564 delay.tv_usec = (conf.stream_delay_arg % 1000) * 1000;
565 stat_task->server_stream_start.tv_sec = sec;
566 stat_task->server_stream_start.tv_usec = usec;
567 if (compute_time_diff(NULL) > 2) {
568 if (stat_task->sa_time_diff_sign < 0)
569 tv_add(&stat_task->server_stream_start,
570 &stat_task->sa_time_diff, &a_start);
572 tv_diff(&stat_task->server_stream_start,
573 &stat_task->sa_time_diff, &a_start);
574 tv_add(&a_start, &delay, &initial_delay_barrier);
578 case SI_CURRENT_TIME:
579 if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) {
580 struct timeval tv = {sec, usec};
581 compute_time_diff(&tv);
585 stat_task->current_audio_format_num = get_audio_format_num(
591 static int parse_stream_command(const char *txt, char **cmd)
593 char *p = strchr(txt, ':');
597 return -E_MISSING_COLON;
599 FOR_EACH_AUDIO_FORMAT(i) {
600 if (strncmp(txt, audio_formats[i], strlen(audio_formats[i])))
605 return -E_UNSUPPORTED_AUDIO_FORMAT;
608 static int add_filter(int format, char *cmdline)
610 struct audio_format_info *a = &afi[format];
611 int filter_num, nf = a->num_filters;
613 filter_num = check_filter_arg(cmdline, &a->filter_conf[nf]);
616 a->filter_nums[nf] = filter_num;
618 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf,
619 filters[filter_num].name);
623 static int init_writers(void)
627 struct audio_format_info *a;
629 init_supported_writers();
630 nw = PARA_MAX(1U, conf.writer_given);
631 PARA_INFO_LOG("maximal number of writers: %d\n", nw);
632 FOR_EACH_AUDIO_FORMAT(i) {
634 a->writer_conf = para_malloc(nw * sizeof(void *));
635 a->writers = para_malloc(nw * sizeof(struct writer *));
638 for (i = 0; i < conf.writer_given; i++) {
641 ret = parse_stream_command(conf.writer_arg[i], &cmd);
646 wconf = check_writer_arg(cmd, &writer_num);
651 a->writers[nw] = &writers[writer_num];
652 a->writer_conf[nw] = wconf;
653 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats[ret],
654 nw, writer_names[writer_num]);
662 static int init_receivers(void)
664 int i, ret, receiver_num;
666 struct audio_format_info *a;
668 for (i = 0; receivers[i].name; i++) {
669 PARA_INFO_LOG("initializing %s receiver\n", receivers[i].name);
670 receivers[i].init(&receivers[i]);
672 for (i = conf.receiver_given - 1; i >= 0; i--) {
673 char *arg = conf.receiver_arg[i];
674 char *recv_arg = strchr(arg, ':');
675 ret = -E_MISSING_COLON;
680 ret = get_audio_format_num(arg);
683 afi[ret].receiver_conf = check_receiver_arg(recv_arg, &receiver_num);
684 if (!afi[ret].receiver_conf) {
685 ret = -E_RECV_SYNTAX;
688 afi[ret].receiver = &receivers[receiver_num];
690 /* use the first available receiver with no arguments
691 * for those audio formats for which no receiver
694 cmd = para_strdup(receivers[0].name);
695 FOR_EACH_AUDIO_FORMAT(i) {
697 if (a->receiver_conf)
699 a->receiver_conf = check_receiver_arg(cmd, &receiver_num);
700 if (!a->receiver_conf)
701 return -E_RECV_SYNTAX;
702 a->receiver = &receivers[receiver_num];
710 static int init_default_filters(void)
714 FOR_EACH_AUDIO_FORMAT(i) {
715 struct audio_format_info *a = &afi[i];
720 continue; /* no default -- nothing to to */
721 /* add "dec" to audio format name */
722 tmp = make_message("%sdec", audio_formats[i]);
723 for (j = 0; filters[j].name; j++)
724 if (!strcmp(tmp, filters[j].name))
727 ret = -E_UNSUPPORTED_FILTER;
728 if (!filters[j].name)
730 tmp = para_strdup(filters[j].name);
731 ret = add_filter(i, tmp);
735 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats[i],
742 static int init_filters(void)
746 filter_init(filters);
747 nf = PARA_MAX(1U, conf.filter_given);
748 PARA_INFO_LOG("maximal number of filters: %d\n", nf);
749 FOR_EACH_AUDIO_FORMAT(i) {
750 afi[i].filter_conf = para_malloc(nf * sizeof(void *));
751 afi[i].filter_nums = para_malloc(nf * sizeof(unsigned));
753 if (!conf.no_default_filters_given)
754 return init_default_filters();
755 for (i = 0; i < conf.filter_given; i++) {
756 char *arg = conf.filter_arg[i];
757 char *filter_name = strchr(arg, ':');
758 ret = -E_MISSING_COLON;
763 ret = get_audio_format_num(arg);
766 ret = add_filter(ret, filter_name);
770 ret = init_default_filters(); /* use default values for the rest */
775 static int init_stream_io(void)
779 ret = init_writers();
782 ret = init_receivers();
785 ret = init_filters();
791 /* does not unlink socket on errors */
792 static int audiod_get_socket(void)
794 struct sockaddr_un unix_addr;
797 if (conf.socket_given)
798 socket_name = para_strdup(conf.socket_arg);
800 char *hn = para_hostname();
801 socket_name = make_message("/var/paraslash/audiod_socket.%s",
805 PARA_NOTICE_LOG("local socket: %s\n", socket_name);
806 if (conf.force_given)
808 ret = create_local_socket(socket_name, &unix_addr,
809 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
813 if (listen(fd , 5) < 0) {
814 ret = -ERRNO_TO_PARA_ERROR(errno);
817 ret = mark_fd_nonblocking(fd);
822 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
826 static void signal_pre_select(struct sched *s, struct task *t)
828 struct signal_task *st = container_of(t, struct signal_task, task);
829 para_fd_set(st->fd, &s->rfds, &s->max_fileno);
832 static void signal_post_select(struct sched *s, struct task *t)
834 struct signal_task *st = container_of(t, struct signal_task, task);
836 if (!FD_ISSET(st->fd, &s->rfds))
839 st->signum = para_next_signal();
840 switch (st->signum) {
844 PARA_EMERG_LOG("terminating on signal %d\n", st->signum);
845 clean_exit(EXIT_FAILURE, "caught deadly signal");
849 static void signal_setup_default(struct signal_task *st)
851 st->task.pre_select = signal_pre_select;
852 st->task.post_select = signal_post_select;
853 sprintf(st->task.status, "signal task");
856 static void command_pre_select(struct sched *s, struct task *t)
858 struct command_task *ct = container_of(t, struct command_task, task);
859 para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
862 static void command_post_select(struct sched *s, struct task *t)
865 struct command_task *ct = container_of(t, struct command_task, task);
867 audiod_status_dump();
868 if (!FD_ISSET(ct->fd, &s->rfds))
870 ret = handle_connect(ct->fd);
872 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
875 static void init_command_task(struct command_task *ct)
877 ct->task.pre_select = command_pre_select;
878 ct->task.post_select = command_post_select;
880 ct->fd = audiod_get_socket(); /* doesn't return on errors */
881 sprintf(ct->task.status, "command task");
884 static void close_stat_pipe(void)
890 client_close(stat_task->ct);
891 stat_task->ct = NULL;
892 FOR_EACH_STATUS_ITEM(i) {
893 free(stat_item_values[i]);
894 stat_item_values[i] = NULL;
897 stat_task->length_seconds = 0;
898 stat_task->offset_seconds = 0;
899 audiod_status_dump();
900 stat_task->playing = 0;
904 * close the connection to para_server and exit
906 * \param status the exit status which is passed to exit(3)
907 * \param msg the log message
909 * Log \a msg with loglevel \p EMERG, close the connection to para_server if
910 * open, and call \p exit(status). \a status should be either EXIT_SUCCESS or
915 void __noreturn clean_exit(int status, const char *msg)
917 PARA_EMERG_LOG("%s\n", msg);
924 /* avoid busy loop if server is down */
925 static void set_stat_task_restart_barrier(unsigned seconds)
927 struct timeval delay = {seconds, 0};
928 tv_add(now, &delay, &stat_task->restart_barrier);
931 static void try_to_close_slot(int slot_num)
933 struct slot_info *s = &slot[slot_num];
937 if (s->receiver_node && s->receiver_node->task.error != -E_TASK_UNREGISTERED)
939 if (s->fc && s->fc->task.error != -E_TASK_UNREGISTERED)
941 if (s->wng && s->wng->task.error != -E_TASK_UNREGISTERED)
943 PARA_INFO_LOG("closing slot %d\n", slot_num);
945 close_filters(s->fc);
947 close_receiver(slot_num);
948 clear_slot(slot_num);
952 * Check if any receivers/filters/writers need to be started and do so if
955 static void start_stop_decoders(struct sched *s)
960 try_to_close_slot(i);
961 if (audiod_status != AUDIOD_ON || !stat_task->playing)
962 return kill_all_decoders(-E_NOT_PLAYING);
963 open_current_receiver(s);
965 struct slot_info *sl = &slot[i];
966 struct audio_format_info *a;
971 a = &afi[sl->format];
972 if (!sl->receiver_node)
974 if ((!a->num_filters || sl->fc) && sl->wng)
975 continue; /* everything already started */
976 if (!a->num_filters) {
977 if (sl->receiver_node->loaded && !sl->wng) {
982 if (sl->receiver_node->loaded && !sl->fc) {
986 if (sl->wng || !sl->fc || !*sl->fc->out_loaded)
988 if (tv_diff(now, &initial_delay_barrier, &diff) > 0) {
992 PARA_INFO_LOG("initial delay: %lu ms left\n", tv2ms(&diff));
993 if (tv_diff(&s->timeout, &diff, NULL) > 0) {
1000 /* restart the client task if necessary */
1001 static void status_pre_select(struct sched *s, struct task *t)
1003 struct status_task *st = container_of(t, struct status_task, task);
1005 if (audiod_status == AUDIOD_OFF) {
1008 if (st->ct->task.error >= 0) {
1009 st->ct->task.error = -E_AUDIOD_OFF;
1012 if (st->ct->task.error != -E_TASK_UNREGISTERED)
1015 st->clock_diff_count = conf.clock_diff_count_arg;
1019 unsigned bytes_left;
1020 if (st->ct->task.error < 0) {
1021 if (st->ct->task.error != -E_TASK_UNREGISTERED)
1026 if (st->ct->status != CL_RECEIVING)
1028 bytes_left = for_each_line(st->ct->buf, st->ct->loaded,
1029 &check_stat_line, NULL);
1030 if (st->ct->loaded != bytes_left) {
1031 st->last_status_read = *now;
1032 st->ct->loaded = bytes_left;
1034 struct timeval diff;
1035 tv_diff(now, &st->last_status_read, &diff);
1036 if (diff.tv_sec > 61)
1037 st->ct->task.error = -E_STATUS_TIMEOUT;
1041 if (tv_diff(now, &st->restart_barrier, NULL) < 0)
1043 if (st->clock_diff_count) { /* get status only one time */
1044 char *argv[] = {"audiod", "stat", "1", NULL};
1046 PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count);
1047 st->clock_diff_count--;
1048 client_open(argc, argv, &st->ct);
1049 set_stat_task_restart_barrier(2);
1052 char *argv[] = {"audiod", "stat", NULL};
1054 client_open(argc, argv, &st->ct);
1055 set_stat_task_restart_barrier(5);
1057 free(stat_item_values[SI_BASENAME]);
1058 stat_item_values[SI_BASENAME] = make_message(
1059 "%s: no connection to para_server\n",
1060 status_item_list[SI_BASENAME]);
1061 stat_client_write(stat_item_values[SI_BASENAME],
1063 st->last_status_read = *now;
1065 start_stop_decoders(s);
1068 static void init_status_task(struct status_task *st)
1070 memset(st, 0, sizeof(struct status_task));
1071 st->task.pre_select = status_pre_select;
1072 st->sa_time_diff_sign = 1;
1073 st->clock_diff_count = conf.clock_diff_count_arg;
1074 st->current_audio_format_num = -1;
1075 sprintf(st->task.status, "status task");
1078 static void set_initial_status(void)
1080 audiod_status = AUDIOD_ON;
1081 if (!conf.mode_given)
1083 if (!strcmp(conf.mode_arg, "sb")) {
1084 audiod_status = AUDIOD_STANDBY;
1087 if (!strcmp(conf.mode_arg, "off")) {
1088 audiod_status = AUDIOD_OFF;
1091 if (strcmp(conf.mode_arg, "on"))
1092 PARA_WARNING_LOG("invalid mode\n");
1095 __noreturn static void print_help_and_die(void)
1097 int d = conf.detailed_help_given;
1098 const char **p = d? audiod_args_info_detailed_help
1099 : audiod_args_info_help;
1101 printf_or_die("%s\n\n", AUDIOD_CMDLINE_PARSER_PACKAGE "-"
1102 AUDIOD_CMDLINE_PARSER_VERSION);
1103 printf_or_die("%s\n\n", audiod_args_info_usage);
1105 printf_or_die("%s\n", *p);
1106 print_receiver_helps(d);
1107 print_filter_helps(d);
1108 print_writer_helps(d);
1114 * the main function of para_audiod
1116 * \param argc usual argument count
1117 * \param argv usual argument vector
1119 * \return EXIT_SUCCESS or EXIT_FAILURE
1121 * \sa para_audiod(1)
1123 int main(int argc, char *argv[])
1126 static struct sched s;
1127 struct command_task command_task_struct, *cmd_task = &command_task_struct;
1128 struct audiod_cmdline_parser_params params = {
1131 .check_required = 0,
1132 .check_ambiguity = 0,
1137 audiod_cmdline_parser_ext(argc, argv, &conf, ¶ms);
1138 HANDLE_VERSION_FLAG("audiod", conf);
1139 para_drop_privileges(conf.user_arg, conf.group_arg);
1140 parse_config_or_die();
1141 if (conf.logfile_given)
1142 logfile = open_log(conf.logfile_arg);
1143 i = init_stream_io();
1144 if (conf.help_given || conf.detailed_help_given)
1145 print_help_and_die();
1147 PARA_EMERG_LOG("init stream io error: %s\n", para_strerror(-i));
1150 log_welcome("para_audiod", conf.loglevel_arg);
1151 server_uptime(UPTIME_SET);
1152 set_initial_status();
1156 setup_signal_handling();
1157 signal_setup_default(sig_task);
1159 init_status_task(stat_task);
1160 init_command_task(cmd_task);
1162 if (conf.daemon_given)
1165 register_task(&sig_task->task);
1166 register_task(&cmd_task->task);
1167 register_task(&stat_task->task);
1168 s.default_timeout.tv_sec = 0;
1169 s.default_timeout.tv_usec = 99 * 1000;
1172 PARA_EMERG_LOG("%s\n", para_strerror(-ret));
1173 return EXIT_FAILURE;