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"
41 /** define the array of error lists needed by para_audiod */
43 /** define the array containing all supported audio formats */
44 DEFINE_AUDIO_FORMAT_ARRAY
;
46 /** defines how to handle one supported audio format */
47 struct audio_format_info
{
48 /** pointer to the receiver for this audio format */
49 struct receiver
*receiver
;
50 /** the receiver configuration */
52 /** the number of filters that should be activated for this audio format */
53 unsigned int num_filters
;
54 /** pointer to the array of filters to be activated */
55 struct filter
**filters
;
56 /** pointer to the array of filter configurations */
58 /** the number of filters that should be activated for this audio format */
59 unsigned int num_writers
;
60 /** pointer to the array of writers to be activated */
61 struct writer
**writers
;
62 /** pointer to the array of writer configurations */
64 /** do not start receiver/filters/writer before this time */
65 struct timeval restart_barrier
;
68 struct slot_info slot
[MAX_STREAM_SLOTS
];
71 int audiod_status
= AUDIOD_ON
;
73 struct audiod_args_info conf
;
74 static char *socket_name
;
76 static struct audio_format_info afi
[NUM_AUDIO_FORMATS
];
78 static struct signal_task signal_task_struct
, *sig_task
= &signal_task_struct
;
80 static struct status_task status_task_struct
;
81 struct status_task
*stat_task
= &status_task_struct
;
84 * the task for handling audiod commands
86 * \sa struct task, struct sched
89 /** the local listening socket */
91 /** the associated task structure */
101 /** iterate over all supported audio formats */
102 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
105 * get the audio format number
106 * \param name the name of the audio format
108 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
109 * \a name is not a supported audio format.
111 int get_audio_format_num(char *name
)
114 FOR_EACH_AUDIO_FORMAT(i
)
115 if (!strcmp(name
, audio_formats
[i
]))
117 return -E_UNSUPPORTED_AUDIO_FORMAT
;
121 * log function. first argument is loglevel.
123 void para_log(int ll
, const char* fmt
,...)
129 char str
[MAXLINE
] = "";
130 static char *hostname
;
132 if (ll
< conf
.loglevel_arg
)
135 hostname
= para_hostname();
136 outfd
= logfile
? logfile
: stderr
;
139 strftime(str
, MAXLINE
, "%b %d %H:%M:%S", tm
);
140 fprintf(outfd
, "%s %s ", str
, hostname
);
141 if (conf
.loglevel_arg
<= INFO
)
142 fprintf(outfd
, "%i ", ll
);
144 vfprintf(outfd
, fmt
, argp
);
148 static char *configfile_exists(void)
150 static char *config_file
;
153 char *home
= para_homedir();
154 config_file
= make_message("%s/.paraslash/audiod.conf", home
);
157 return file_exists(config_file
)? config_file
: NULL
;
160 static void setup_signal_handling(void)
162 sig_task
->fd
= para_signal_init();
163 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task
->fd
);
164 para_install_sighandler(SIGINT
);
165 para_install_sighandler(SIGTERM
);
166 para_install_sighandler(SIGHUP
);
167 signal(SIGPIPE
, SIG_IGN
);
170 static void clear_slot(int slot_num
)
172 struct slot_info
*s
= &slot
[slot_num
];
174 PARA_INFO_LOG("clearing slot %d\n", slot_num
);
175 memset(s
, 0, sizeof(struct slot_info
));
179 static void close_receiver(int slot_num
)
181 struct slot_info
*s
= &slot
[slot_num
];
182 struct audio_format_info
*a
;
183 const struct timeval restart_delay
= {0, 200 * 1000};
185 if (s
->format
< 0 || !s
->receiver_node
)
188 PARA_NOTICE_LOG("closing %s receiver in slot %d (eof = %d)\n",
189 audio_formats
[s
->format
] , slot_num
, s
->receiver_node
->eof
);
190 // if (!s->receiver_node->eof)
191 // unregister_task(&s->receiver_node->task);
192 a
->receiver
->close(s
->receiver_node
);
193 free(s
->receiver_node
);
194 s
->receiver_node
= NULL
;
195 /* set restart barrier */
196 tv_add(now
, &restart_delay
, &afi
[s
->format
].restart_barrier
);
199 static void kill_all_decoders(void)
204 struct slot_info
*s
= &slot
[i
];
205 if (s
->wng
&& !s
->wng
->eof
) {
206 PARA_INFO_LOG("unregistering writer node group in slot %d\n",
208 wng_unregister(s
->wng
);
211 if (s
->fc
&& !s
->fc
->eof
) {
212 PARA_INFO_LOG("unregistering filter chain in slot %d\n", i
);
213 unregister_task(&s
->fc
->task
);
216 if (s
->receiver_node
&& !s
->receiver_node
->eof
) {
217 PARA_INFO_LOG("unregistering receiver_node in slot %d\n", i
);
218 unregister_task(&s
->receiver_node
->task
);
219 s
->receiver_node
->eof
= 1;
224 static int get_empty_slot(void)
235 if (s
->wng
|| s
->receiver_node
|| s
->fc
)
240 return -E_NO_MORE_SLOTS
;
243 static int decoder_running(int format
)
250 if (s
->format
== format
&& s
->receiver_node
)
252 if (s
->format
== format
&& s
->wng
)
258 static void close_stat_pipe(void)
264 client_close(stat_task
->pcd
);
265 stat_task
->pcd
= NULL
;
266 for (i
= 0; i
< NUM_STAT_ITEMS
; i
++) {
267 free(stat_task
->stat_item_values
[i
]);
268 stat_task
->stat_item_values
[i
] = NULL
;
271 stat_task
->length_seconds
= 0;
272 stat_task
->offset_seconds
= 0;
273 audiod_status_dump();
274 stat_task
->playing
= 0;
275 stat_task
->stat_item_values
[SI_STATUS_BAR
] = make_message(
276 "%s:no connection to para_server\n",
277 status_item_list
[SI_STATUS_BAR
]);
278 stat_client_write(stat_task
->stat_item_values
[SI_STATUS_BAR
], SI_STATUS_BAR
);
281 void __noreturn
clean_exit(int status
, const char *msg
)
283 PARA_EMERG_LOG("%s\n", msg
);
291 * get the number of filters
293 * \param audio_format_num the number identifying the audio format
295 * \return the number of filters for the given audio format
299 int num_filters(int audio_format_num
)
301 return afi
[audio_format_num
].num_filters
;
304 static void filter_event_handler(struct task
*t
)
306 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
307 struct filter_chain
*fc
= t
->private_data
;
312 static void open_filters(int slot_num
)
314 struct slot_info
*s
= &slot
[slot_num
];
315 struct audio_format_info
*a
= &afi
[s
->format
];
316 int nf
= a
->num_filters
;
322 PARA_INFO_LOG("opening %s filters\n", audio_formats
[s
->format
]);
323 s
->fc
= para_calloc(sizeof(struct filter_chain
));
324 INIT_LIST_HEAD(&s
->fc
->filters
);
325 s
->fc
->inbuf
= s
->receiver_node
->buf
;
326 s
->fc
->in_loaded
= &s
->receiver_node
->loaded
;
327 s
->fc
->input_eof
= &s
->receiver_node
->eof
;
328 s
->fc
->task
.pre_select
= filter_pre_select
;
329 s
->fc
->task
.event_handler
= filter_event_handler
;
330 s
->fc
->task
.private_data
= s
->fc
;
333 s
->receiver_node
->output_eof
= &s
->fc
->eof
;
334 sprintf(s
->fc
->task
.status
, "filter chain");
335 for (i
= 0; i
< nf
; i
++) {
336 struct filter_node
*fn
= para_calloc(sizeof(struct filter_node
));
337 fn
->conf
= a
->filter_conf
[i
];
339 fn
->filter
= a
->filters
[i
];
340 INIT_LIST_HEAD(&fn
->callbacks
);
341 list_add_tail(&fn
->node
, &s
->fc
->filters
);
342 fn
->filter
->open(fn
);
343 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
344 audio_formats
[s
->format
], i
+ 1, nf
,
345 fn
->filter
->name
, slot_num
);
346 s
->fc
->outbuf
= fn
->buf
;
347 s
->fc
->out_loaded
= &fn
->loaded
;
349 register_task(&s
->fc
->task
);
352 static void wng_event_handler(struct task
*t
)
354 struct writer_node_group
*wng
= t
->private_data
;
356 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
361 static void open_writers(int slot_num
)
364 struct slot_info
*s
= &slot
[slot_num
];
365 struct audio_format_info
*a
= &afi
[s
->format
];
367 PARA_INFO_LOG("opening %s writers\n", audio_formats
[s
->format
]);
369 s
->wng
= setup_default_wng();
371 s
->wng
= wng_new(a
->num_writers
);
373 s
->wng
->buf
= s
->fc
->outbuf
;
374 s
->wng
->loaded
= s
->fc
->out_loaded
;
375 s
->wng
->input_eof
= &s
->fc
->eof
;
376 s
->wng
->channels
= &s
->fc
->channels
;
377 s
->wng
->samplerate
= &s
->fc
->samplerate
;
378 s
->fc
->output_eof
= &s
->wng
->eof
;
379 PARA_INFO_LOG("samplerate: %d\n", *s
->wng
->samplerate
);
381 s
->wng
->buf
= s
->receiver_node
->buf
;
382 s
->wng
->loaded
= &s
->receiver_node
->loaded
;
383 s
->wng
->input_eof
= &s
->receiver_node
->eof
;
385 s
->wng
->task
.event_handler
= wng_event_handler
;
386 for (i
= 0; i
< a
->num_writers
; i
++) {
387 s
->wng
->writer_nodes
[i
].conf
= a
->writer_conf
[i
];
388 s
->wng
->writer_nodes
[i
].writer
= a
->writers
[i
];
390 ret
= wng_open(s
->wng
);
392 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));
396 activate_inactive_grab_clients(slot_num
, s
->format
, &s
->fc
->filters
);
399 static void rn_event_handler(struct task
*t
)
401 struct receiver_node
*rn
= t
->private_data
;
403 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
408 static void open_receiver(int format
)
410 struct audio_format_info
*a
= &afi
[format
];
413 struct receiver_node
*rn
;
415 slot_num
= get_empty_slot();
417 clean_exit(EXIT_FAILURE
, PARA_STRERROR(-slot_num
));
420 s
->receiver_node
= para_calloc(sizeof(struct receiver_node
));
421 rn
= s
->receiver_node
;
422 rn
->receiver
= a
->receiver
;
423 rn
->conf
= a
->receiver_conf
;
424 ret
= a
->receiver
->open(s
->receiver_node
);
426 PARA_ERROR_LOG("failed to open receiver (%s)\n",
427 PARA_STRERROR(-ret
));
428 free(s
->receiver_node
);
429 s
->receiver_node
= NULL
;
432 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
433 audio_formats
[s
->format
], a
->receiver
->name
, slot_num
);
434 rn
->task
.private_data
= s
->receiver_node
;
435 rn
->task
.pre_select
= a
->receiver
->pre_select
;
436 rn
->task
.post_select
= a
->receiver
->post_select
;
437 rn
->task
.event_handler
= rn_event_handler
;
438 sprintf(rn
->task
.status
, "%s receiver node", rn
->receiver
->name
);
439 register_task(&rn
->task
);
442 static int open_current_receiver(struct sched
*s
)
447 if (!stat_task
->af_status
|| !stat_task
->pcd
)
449 i
= get_audio_format_num(stat_task
->af_status
);
452 if (decoder_running(i
))
454 if (tv_diff(now
, &afi
[i
].restart_barrier
, &diff
) < 0) {
462 static void compute_time_diff(const struct timeval
*status_time
)
464 struct timeval tmp
, diff
;
466 int sign
, sa_time_diff_sign
= stat_task
->sa_time_diff_sign
;
467 const struct timeval max_deviation
= {0, 500 * 1000};
468 const int time_smooth
= 5;
470 sign
= tv_diff(status_time
, now
, &diff
);
471 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
472 // sign, sa_time_diff_sign);
474 sa_time_diff_sign
= sign
;
475 stat_task
->sa_time_diff
= diff
;
480 int s
= tv_diff(&diff
, &stat_task
->sa_time_diff
, &tmp
);
481 if (tv_diff(&max_deviation
, &tmp
, NULL
) < 0)
482 PARA_WARNING_LOG("time diff jump: %lims\n",
486 sa_time_diff_sign
= tv_convex_combination(
487 sa_time_diff_sign
* time_smooth
, &stat_task
->sa_time_diff
,
488 count
> 10? sign
: sign
* time_smooth
, &diff
,
490 stat_task
->sa_time_diff
= tmp
;
491 PARA_DEBUG_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
494 sa_time_diff_sign
? "+" : "-",
495 tv2ms(&stat_task
->sa_time_diff
)
499 static void check_stat_line(char *line
)
503 long unsigned sec
, usec
;
506 // PARA_INFO_LOG("line: %s\n", line);
509 itemnum
= stat_line_valid(line
);
511 PARA_WARNING_LOG("invalid status line: %s\n", line
);
514 tmp
= make_message("%s\n", line
);
515 stat_client_write(tmp
, itemnum
);
517 free(stat_task
->stat_item_values
[itemnum
]);
518 stat_task
->stat_item_values
[itemnum
] = para_strdup(line
);
519 ilen
= strlen(status_item_list
[itemnum
]);
522 stat_task
->playing
= strstr(line
, "playing")? 1 : 0;
525 free(stat_task
->af_status
);
526 stat_task
->af_status
= para_strdup(line
+ ilen
+ 1);
529 stat_task
->offset_seconds
= atoi(line
+ ilen
+ 1);
532 stat_task
->length_seconds
= atoi(line
+ ilen
+ 1);
534 case SI_STREAM_START
:
535 if (sscanf(line
+ ilen
+ 1, "%lu.%lu", &sec
, &usec
) == 2) {
536 stat_task
->server_stream_start
.tv_sec
= sec
;
537 stat_task
->server_stream_start
.tv_usec
= usec
;
540 case SI_CURRENT_TIME
:
541 if (sscanf(line
+ ilen
+ 1, "%lu.%lu", &sec
, &usec
) == 2) {
542 struct timeval tv
= {sec
, usec
};
543 compute_time_diff(&tv
);
549 static void handle_signal(int sig
)
555 PARA_EMERG_LOG("terminating on signal %d\n", sig
);
556 clean_exit(EXIT_FAILURE
, "caught deadly signal");
561 static void try_to_close_slot(int slot_num
)
563 struct slot_info
*s
= &slot
[slot_num
];
567 if (s
->receiver_node
&& !s
->receiver_node
->eof
)
569 if (s
->fc
&& !s
->fc
->eof
)
571 if (s
->wng
&& !s
->wng
->eof
)
573 PARA_INFO_LOG("closing slot %d \n", slot_num
);
575 close_filters(s
->fc
);
577 close_receiver(slot_num
);
578 clear_slot(slot_num
);
582 * Check if any receivers/filters/writers need to be started and do so if
583 * neccessary. Since the pre_select function didn't have a chance yet to put
584 * file descriptors into the fd sets given by s, make the upcoming select()
585 * return immediately to avoid a long timeout in case we started something.
587 static void audiod_pre_select(struct sched
*s
, __a_unused
struct task
*t
)
590 struct timeval min_delay
= {0, 1};
593 if (audiod_status
!= AUDIOD_ON
|| !stat_task
->playing
)
594 return kill_all_decoders();
595 if (open_current_receiver(s
))
596 s
->timeout
= min_delay
;
598 struct slot_info
*sl
= &slot
[i
];
599 struct audio_format_info
*a
;
603 a
= &afi
[sl
->format
];
604 if (!sl
->receiver_node
)
606 if (!a
->num_filters
) {
607 if (sl
->receiver_node
->loaded
&& !sl
->wng
) {
609 s
->timeout
= min_delay
;
613 if (sl
->receiver_node
->loaded
&& !sl
->fc
) {
615 s
->timeout
= min_delay
;
618 if (sl
->fc
&& *sl
->fc
->out_loaded
&& !sl
->wng
) {
620 s
->timeout
= min_delay
;
625 static void audiod_post_select(__a_unused
struct sched
*s
,
626 __a_unused
struct task
*t
)
630 /* save away the current time for other users */
633 try_to_close_slot(i
);
636 static void init_audiod_task(struct task
*t
)
638 t
->pre_select
= audiod_pre_select
;
639 t
->post_select
= audiod_post_select
;
640 t
->event_handler
= NULL
;
642 sprintf(t
->status
, "audiod task");
645 static int parse_stream_command(const char *txt
, char **cmd
)
647 char *p
= strchr(txt
, ':');
651 return -E_MISSING_COLON
;
653 FOR_EACH_AUDIO_FORMAT(i
) {
654 if (strncmp(txt
, audio_formats
[i
], strlen(audio_formats
[i
])))
659 return -E_UNSUPPORTED_AUDIO_FORMAT
;
662 static int add_filter(int format
, char *cmdline
)
664 struct audio_format_info
*a
= &afi
[format
];
665 int filter_num
, nf
= a
->num_filters
;
667 filter_num
= check_filter_arg(cmdline
, &a
->filter_conf
[nf
]);
670 a
->filters
[nf
] = &filters
[filter_num
];
672 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats
[format
], nf
+ 1,
673 a
->filters
[nf
]->name
);
677 static int init_writers(void)
681 struct audio_format_info
*a
;
683 init_supported_writers();
684 nw
= PARA_MAX(1, conf
.writer_given
);
685 PARA_INFO_LOG("maximal number of writers: %d\n", nw
);
686 FOR_EACH_AUDIO_FORMAT(i
) {
688 a
->writer_conf
= para_malloc(nw
* sizeof(void *));
689 a
->writers
= para_malloc(nw
* sizeof(struct writer
*));
692 for (i
= 0; i
< conf
.writer_given
; i
++) {
695 ret
= parse_stream_command(conf
.writer_arg
[i
], &cmd
);
700 wconf
= check_writer_arg(cmd
, &writer_num
);
705 a
->writers
[nw
] = &writers
[writer_num
];
706 a
->writer_conf
[nw
] = wconf
;
707 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats
[ret
],
708 nw
, writer_names
[writer_num
]);
716 static int init_receivers(void)
718 int i
, ret
, receiver_num
;
720 struct audio_format_info
*a
;
722 for (i
= 0; receivers
[i
].name
; i
++) {
723 PARA_INFO_LOG("initializing %s receiver\n", receivers
[i
].name
);
724 receivers
[i
].init(&receivers
[i
]);
726 for (i
= 0; i
< conf
.receiver_given
; i
++) {
727 char *arg
= conf
.receiver_arg
[i
];
728 char *recv
= strchr(arg
, ':');
729 ret
= -E_MISSING_COLON
;
734 ret
= get_audio_format_num(arg
);
737 afi
[ret
].receiver_conf
= check_receiver_arg(recv
, &receiver_num
);
738 if (!afi
[ret
].receiver_conf
) {
739 ret
= -E_RECV_SYNTAX
;
742 afi
[ret
].receiver
= &receivers
[receiver_num
];
744 /* use the first available receiver with no arguments
745 * for those audio formats for which no receiver
748 cmd
= para_strdup(receivers
[0].name
);
749 FOR_EACH_AUDIO_FORMAT(i
) {
751 if (a
->receiver_conf
)
753 a
->receiver_conf
= check_receiver_arg(cmd
, &receiver_num
);
754 if (!a
->receiver_conf
)
755 return -E_RECV_SYNTAX
;
756 a
->receiver
= &receivers
[receiver_num
];
764 static int init_default_filters(void)
768 FOR_EACH_AUDIO_FORMAT(i
) {
769 struct audio_format_info
*a
= &afi
[i
];
774 continue; /* no default -- nothing to to */
775 /* add "dec" to audio format name */
776 tmp
= make_message("%sdec", audio_formats
[i
]);
777 for (j
= 0; filters
[j
].name
; j
++)
778 if (!strcmp(tmp
, filters
[j
].name
))
781 ret
= -E_UNSUPPORTED_FILTER
;
782 if (!filters
[j
].name
)
784 tmp
= para_strdup(filters
[j
].name
);
785 ret
= add_filter(i
, tmp
);
789 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats
[i
],
796 static int init_filters(void)
800 filter_init(filters
);
801 nf
= PARA_MAX(1, conf
.filter_given
);
802 PARA_INFO_LOG("maximal number of filters: %d\n", nf
);
803 FOR_EACH_AUDIO_FORMAT(i
) {
804 afi
[i
].filter_conf
= para_malloc(nf
* sizeof(void *));
805 afi
[i
].filters
= para_malloc(nf
* sizeof(struct filter
*));
807 if (!conf
.no_default_filters_given
)
808 return init_default_filters();
809 for (i
= 0; i
< conf
.filter_given
; i
++) {
810 char *arg
= conf
.filter_arg
[i
];
811 char *filter_name
= strchr(arg
, ':');
812 ret
= -E_MISSING_COLON
;
817 ret
= get_audio_format_num(arg
);
820 ret
= add_filter(ret
, filter_name
);
824 ret
= init_default_filters(); /* use default values for the rest */
829 static int init_stream_io(void)
833 ret
= init_writers();
836 ret
= init_receivers();
839 ret
= init_filters();
845 static int audiod_get_socket(void)
847 struct sockaddr_un unix_addr
;
850 if (conf
.socket_given
)
851 socket_name
= para_strdup(conf
.socket_arg
);
853 char *hn
= para_hostname();
854 socket_name
= make_message("/var/paraslash/audiod_socket.%s",
858 PARA_NOTICE_LOG("local socket: %s\n", socket_name
);
859 if (conf
.force_given
)
861 fd
= create_pf_socket(socket_name
, &unix_addr
,
862 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
864 PARA_EMERG_LOG("%s", "can not connect to socket\n");
865 exit(EXIT_FAILURE
); /* do not unlink socket */
867 if (listen(fd
, 5) < 0) {
868 PARA_EMERG_LOG("%s", "can not listen on socket\n");
869 exit(EXIT_FAILURE
); /* do not unlink socket */
871 mark_fd_nonblock(fd
);
875 void signal_event_handler(struct task
*t
)
877 struct signal_task
*st
= t
->private_data
;
879 if (t
->ret
!= -E_SIGNAL_CAUGHT
)
880 PARA_ERROR_LOG("%s (ignored)\n", PARA_STRERROR(-t
->ret
));
882 handle_signal(st
->signum
);
885 void signal_pre_select(struct sched
*s
, struct task
*t
)
887 struct signal_task
*st
= t
->private_data
;
889 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
892 void signal_post_select(struct sched
*s
, struct task
*t
)
894 struct signal_task
*st
= t
->private_data
;
896 if (!FD_ISSET(st
->fd
, &s
->rfds
))
898 t
->ret
= -E_SIGNAL_CAUGHT
;
899 st
->signum
= para_next_signal();
902 void signal_setup_default(struct signal_task
*st
)
904 st
->task
.pre_select
= signal_pre_select
;
905 st
->task
.post_select
= signal_post_select
;
906 st
->task
.private_data
= st
;
907 sprintf(st
->task
.status
, "signal task");
910 static void command_pre_select(struct sched
*s
, struct task
*t
)
912 struct command_task
*ct
= t
->private_data
;
914 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
918 static void command_post_select(struct sched
*s
, struct task
*t
)
921 struct command_task
*ct
= t
->private_data
;
923 t
->ret
= 1; /* always successful */
924 if (audiod_status
!= AUDIOD_OFF
)
925 audiod_status_dump();
926 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
928 ret
= handle_connect(ct
->fd
);
930 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));
933 static void init_command_task(struct command_task
*ct
)
935 ct
->task
.pre_select
= command_pre_select
;
936 ct
->task
.post_select
= command_post_select
;
937 ct
->task
.event_handler
= NULL
;
938 ct
->task
.private_data
= ct
;
939 ct
->fd
= audiod_get_socket(); /* doesn't return on errors */
940 sprintf(ct
->task
.status
, "command task");
943 static void client_task_event_handler(__a_unused
struct task
*t
)
945 struct private_client_data
*pcd
= t
->private_data
;
946 if (t
->ret
== -E_HANDSHAKE_COMPLETE
)
952 static void status_event_handler(__a_unused
struct task
*t
)
954 struct timeval delay
= {1, 0};
956 struct status_task
*st
= t
->private_data
;
958 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t
->ret
));
960 /* avoid busy loop if server is down */
961 tv_add(now
, &delay
, &st
->restart_barrier
);
962 FOR_EACH_AUDIO_FORMAT(i
)
963 afi
[i
].restart_barrier
= st
->restart_barrier
;
966 static void status_pre_select(struct sched
*s
, struct task
*t
)
968 struct status_task
*st
= t
->private_data
;
970 char *argv
[] = {"audiod", "stat", NULL
};
972 if (st
->pcd
&& (audiod_status
== AUDIOD_OFF
|| st
->pcd
->eof
))
974 if (!st
->pcd
&& audiod_status
!= AUDIOD_OFF
975 && tv_diff(now
, &st
->restart_barrier
, NULL
) > 0) {
976 t
->ret
= client_parse_config(argc
, argv
, &st
->pcd
);
979 t
->ret
= client_open(st
->pcd
);
982 st
->pcd
->task
.event_handler
= client_task_event_handler
;
983 s
->timeout
.tv_sec
= 0;
984 s
->timeout
.tv_usec
= 1;
988 static void status_post_select(__a_unused
struct sched
*s
, struct task
*t
)
990 struct status_task
*st
= t
->private_data
;
993 if (!st
->pcd
|| !st
->pcd
->loaded
994 || st
->pcd
->status
!= CL_RECEIVING_SERVER_OUTPUT
)
996 st
->pcd
->loaded
= for_each_line(st
->pcd
->buf
, st
->pcd
->loaded
,
1000 static void init_status_task(struct status_task
*st
)
1002 memset(st
, 0, sizeof(struct status_task
));
1003 st
->task
.pre_select
= status_pre_select
;
1004 st
->task
.post_select
= status_post_select
;
1005 st
->task
.event_handler
= status_event_handler
;
1006 st
->task
.private_data
= st
;
1007 st
->sa_time_diff_sign
= 1;
1008 sprintf(st
->task
.status
, "status task");
1011 static void set_initial_status(void)
1013 audiod_status
= AUDIOD_ON
;
1014 if (!conf
.mode_given
)
1016 if (!strcmp(conf
.mode_arg
, "sb")) {
1017 audiod_status
= AUDIOD_STANDBY
;
1020 if (!strcmp(conf
.mode_arg
, "off")) {
1021 audiod_status
= AUDIOD_OFF
;
1024 if (strcmp(conf
.mode_arg
, "on"))
1025 PARA_WARNING_LOG("%s", "invalid mode\n");
1028 int main(int argc
, char *argv
[])
1033 struct command_task command_task_struct
, *cmd_task
= &command_task_struct
;
1034 struct task audiod_task_struct
, *audiod_task
= &audiod_task_struct
;
1037 audiod_cmdline_parser(argc
, argv
, &conf
);
1038 para_drop_privileges(conf
.user_arg
, conf
.group_arg
);
1039 cf
= configfile_exists();
1041 if (audiod_cmdline_parser_configfile(cf
, &conf
, 0, 0, 0)) {
1042 PARA_EMERG_LOG("%s", "parse error in config file\n");
1046 if (conf
.logfile_given
)
1047 logfile
= open_log(conf
.logfile_arg
);
1048 log_welcome("para_audiod", conf
.loglevel_arg
);
1049 i
= init_stream_io();
1051 PARA_EMERG_LOG("init stream io error: %s\n", PARA_STRERROR(-i
));
1054 server_uptime(UPTIME_SET
);
1055 set_initial_status();
1059 setup_signal_handling();
1060 signal_setup_default(sig_task
);
1061 sig_task
->task
.event_handler
= signal_event_handler
;
1063 init_status_task(stat_task
);
1064 init_command_task(cmd_task
);
1065 init_audiod_task(audiod_task
);
1067 if (conf
.daemon_given
)
1070 register_task(&sig_task
->task
);
1071 register_task(&cmd_task
->task
);
1072 register_task(&stat_task
->task
);
1073 register_task(audiod_task
);
1074 s
.default_timeout
.tv_sec
= 0;
1075 s
.default_timeout
.tv_usec
= 99 * 1000;
1078 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret
));
1079 return EXIT_FAILURE
;