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
;