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 */
12 #include <openssl/rc4.h>
18 #include "audiod.cmdline.h"
23 #include "buffer_tree.h"
25 #include "grab_client.h"
26 #include "client.cmdline.h"
34 #include "write_common.h"
37 /** define the array of error lists needed by para_audiod */
39 /** define the array containing all supported audio formats */
40 const char *audio_formats
[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL
};
42 /** Defines how audiod handles one supported audio format. */
43 struct audio_format_info
{
44 /** pointer to the receiver for this audio format */
45 struct receiver
*receiver
;
46 /** the receiver configuration */
48 /** the number of filters that should be activated for this audio format */
49 unsigned int num_filters
;
50 /** Array of filter numbers to be activated. */
51 unsigned *filter_nums
;
52 /** Pointer to the array of filter configurations. */
54 /** the number of filters that should be activated for this audio format */
55 unsigned int num_writers
;
56 /** Array of writer numbers to be activated. */
58 /** pointer to the array of writer configurations */
60 /** do not start receiver/filters/writer before this time */
61 struct timeval restart_barrier
;
65 * para_audiod uses \p MAX_STREAM_SLOTS different slots, each of which may
66 * be associated with a receiver/filter/writer triple. This array holds all
67 * information on the status of these slots.
69 * \sa struct slot_info
71 struct slot_info slot
[MAX_STREAM_SLOTS
];
73 /** The vss status flags audiod is interested in. */
74 enum vss_status_flags
{
75 /** Whether the 'N' flag is set. */
76 VSS_STATUS_FLAG_NEXT
= 1,
77 /** The 'P' flag is set. */
78 VSS_STATUS_FLAG_PLAYING
= 2,
82 * The task for obtaining para_server's status (para_client stat).
84 * \sa struct task, struct sched.
87 /** The associated task structure of audiod. */
89 /** Client data associated with the stat task. */
90 struct client_task
*ct
;
91 /** Do not restart client command until this time. */
92 struct timeval restart_barrier
;
93 /** Last time we received status data from para_server. */
94 struct timeval last_status_read
;
95 /** The offset value announced by para_server. */
97 /** The length of the current audio file as announced by para_server. */
99 /** The start of the current stream from the view of para_server. */
100 struct timeval server_stream_start
;
101 /** The average time deviation between para_server and para_audiod. */
102 struct timeval sa_time_diff
;
103 /** Whether client time is ahead of server time. */
104 int sa_time_diff_sign
;
105 /** The 'P' and the 'N' flags as announced by para_server. */
106 enum vss_status_flags vss_status
;
107 /** Number of times the clock difference is to be checked. */
108 unsigned clock_diff_count
;
109 /** When to start the next check for clock difference. */
110 struct timeval clock_diff_barrier
;
111 /** Number of the audio format as announced by para_server. */
112 int current_audio_format_num
;
115 /** The array of status items sent by para_server. */
116 char *stat_item_values
[NUM_STAT_ITEMS
] = {NULL
};
119 * the current mode of operation of which can be changed by the on/off/cycle
120 * commands. It is either, AUDIOD_OFF, AUDIOD_ON or AUDIOD_STANDBY.
122 int audiod_status
= AUDIOD_ON
;
125 * the gengetopt args_info struct that holds information on all command line
128 struct audiod_args_info conf
;
130 static char *socket_name
;
131 static struct audio_format_info afi
[NUM_AUDIO_FORMATS
];
133 static struct signal_task signal_task_struct
, *sig_task
= &signal_task_struct
;
135 static struct status_task status_task_struct
;
138 * the task that calls the status command of para_server
140 * \sa struct status_task
142 static struct status_task
*stat_task
= &status_task_struct
;
143 static struct timeval initial_delay_barrier
;
146 * the task for handling audiod commands
148 * \sa struct task, struct sched
150 struct command_task
{
151 /** the local listening socket */
153 /** the associated task structure */
157 /** iterate over all supported audio formats */
158 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
161 * get the audio format number
162 * \param name the name of the audio format
164 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
165 * \a name is not a supported audio format.
167 int get_audio_format_num(const char *name
)
171 while (para_isspace(*name
))
173 FOR_EACH_AUDIO_FORMAT(i
)
174 if (!strcmp(name
, audio_formats
[i
]))
176 return -E_UNSUPPORTED_AUDIO_FORMAT
;
179 char *get_time_string(int slot_num
)
181 int ret
, seconds
= 0, length
;
182 struct timeval
*tmp
, sum
, sss
, /* server stream start */
183 rstime
, /* receiver start time */
184 wstime
, /* writer start time */
185 wtime
, /* now - writer start */
186 rskip
; /* receiver start - sss */
187 struct slot_info
*s
= slot_num
< 0? NULL
: &slot
[slot_num
];
190 if (audiod_status
== AUDIOD_OFF
)
192 if (!(stat_task
->vss_status
& VSS_STATUS_FLAG_PLAYING
)) {
193 if (stat_task
->length_seconds
) /* paused */
195 goto empty
; /* stopped */
197 if (audiod_status
== AUDIOD_ON
&& !s
)
200 * Valid status items and playing, set length and tmp to the stream
201 * start. We use the slot info and fall back to the info from current
202 * status items if no slot info is available.
204 length
= stat_task
->length_seconds
;
205 tmp
= &stat_task
->server_stream_start
;
206 if (s
&& s
->wns
) { /* writer active in this slot */
207 btr_get_node_start(s
->wns
[0].btrn
, &wstime
);
208 if (wstime
.tv_sec
!= 0) { /* writer wrote something */
209 if (s
->server_stream_start
.tv_sec
== 0) {
210 /* copy status info to slot */
211 s
->server_stream_start
= stat_task
->server_stream_start
;
212 s
->offset_seconds
= stat_task
->offset_seconds
;
213 s
->seconds_total
= stat_task
->length_seconds
;
215 length
= s
->seconds_total
;
216 tmp
= &s
->server_stream_start
;
219 if (stat_task
->sa_time_diff_sign
> 0)
220 tv_diff(tmp
, &stat_task
->sa_time_diff
, &sss
);
222 tv_add(tmp
, &stat_task
->sa_time_diff
, &sss
);
225 tv_diff(now
, &sss
, &diff
);
226 seconds
= diff
.tv_sec
+ stat_task
->offset_seconds
;
229 tv_diff(now
, &wstime
, &wtime
);
230 //PARA_CRIT_LOG("offset %d\n", s->offset_seconds);
231 seconds
= s
->offset_seconds
;
232 btr_get_node_start(s
->receiver_node
->btrn
, &rstime
);
233 ret
= tv_diff(&rstime
, &sss
, &rskip
);
234 if (ret
> 0) { /* audiod was started in the middle of the stream */
235 tv_add(&wtime
, &rskip
, &sum
);
236 seconds
+= sum
.tv_sec
;
238 seconds
+= wtime
.tv_sec
;
240 seconds
= PARA_MIN(seconds
, length
);
241 seconds
= PARA_MAX(seconds
, 0);
243 "%s%d:%02d [%d:%02d] (%d%%/%d:%02d)",
247 (length
- seconds
) / 60,
248 (length
- seconds
) % 60,
249 length
? (seconds
* 100 + length
/ 2) / length
: 0,
253 PARA_DEBUG_LOG("slot %d: %s\n", slot_num
, msg
);
256 return para_strdup(NULL
);
259 static int want_colors(void)
261 if (conf
.color_arg
== color_arg_no
)
263 if (conf
.color_arg
== color_arg_yes
)
265 if (conf
.logfile_given
)
267 return isatty(STDERR_FILENO
);
270 static void parse_config_or_die(void)
274 struct audiod_cmdline_parser_params params
= {
278 .check_ambiguity
= 0,
282 if (conf
.config_file_given
)
283 config_file
= para_strdup(conf
.config_file_arg
);
285 char *home
= para_homedir();
286 config_file
= make_message("%s/.paraslash/audiod.conf", home
);
289 ret
= file_exists(config_file
);
290 if (conf
.config_file_given
&& !ret
) {
291 PARA_EMERG_LOG("can not read config file %s\n", config_file
);
295 audiod_cmdline_parser_config_file(config_file
, &conf
, ¶ms
);
297 daemon_set_loglevel(conf
.loglevel_arg
);
304 static void setup_signal_handling(void)
306 sig_task
->fd
= para_signal_init();
307 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task
->fd
);
308 para_install_sighandler(SIGINT
);
309 para_install_sighandler(SIGTERM
);
310 para_install_sighandler(SIGHUP
);
311 para_sigaction(SIGPIPE
, SIG_IGN
);
314 static void clear_slot(int slot_num
)
316 struct slot_info
*s
= &slot
[slot_num
];
318 PARA_INFO_LOG("clearing slot %d\n", slot_num
);
319 memset(s
, 0, sizeof(struct slot_info
));
323 static void close_receiver(int slot_num
)
325 struct slot_info
*s
= &slot
[slot_num
];
326 struct audio_format_info
*a
;
327 struct timeval restart_delay
= {0, 200 * 1000};
329 if (s
->format
< 0 || !s
->receiver_node
)
332 PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
333 audio_formats
[s
->format
], slot_num
);
334 a
->receiver
->close(s
->receiver_node
);
335 btr_free_node(s
->receiver_node
->btrn
);
336 free(s
->receiver_node
);
337 s
->receiver_node
= NULL
;
338 tv_add(now
, &restart_delay
, &afi
[s
->format
].restart_barrier
);
341 static void writer_cleanup(struct writer_node
*wn
)
347 w
= writers
+ wn
->writer_num
;
348 PARA_INFO_LOG("closing %s\n", writer_names
[wn
->writer_num
]);
350 btr_free_node(wn
->btrn
);
353 static void close_writers(struct slot_info
*s
)
355 struct audio_format_info
*a
;
361 if (a
->num_writers
== 0)
362 writer_cleanup(s
->wns
);
364 for (i
= 0; i
< a
->num_writers
; i
++)
365 writer_cleanup(s
->wns
+ i
);
371 static void _close_filters(struct slot_info
*s
)
374 struct audio_format_info
*a
= afi
+ s
->format
;
375 if (a
->num_filters
== 0)
377 for (i
= 0; i
< a
->num_filters
; i
++) {
378 struct filter_node
*fn
= s
->fns
+ i
;
383 f
= filters
+ fn
->filter_num
;
385 btr_free_node(fn
->btrn
);
391 static void kill_all_decoders(int error
)
396 struct slot_info
*s
= &slot
[i
];
397 struct audio_format_info
*a
;
402 for (j
= 0; j
< a
->num_writers
; j
++)
403 s
->wns
[j
].task
.error
= error
;
405 for (j
= 0; j
< a
->num_writers
; j
++)
406 s
->fns
[j
].task
.error
= error
;
407 if (s
->receiver_node
)
408 s
->receiver_node
->task
.error
= error
;
412 static int get_empty_slot(void)
423 if (s
->wns
|| s
->receiver_node
|| s
->fns
)
428 return -E_NO_MORE_SLOTS
;
432 * get the number of filters
434 * \param audio_format_num the number identifying the audio format
436 * \return the number of filters for the given audio format
440 int num_filters(int audio_format_num
)
442 return afi
[audio_format_num
].num_filters
;
445 static void open_filters(struct slot_info
*s
)
447 struct audio_format_info
*a
= afi
+ s
->format
;
448 struct filter_node
*fn
;
449 int nf
= a
->num_filters
;
450 struct btr_node
*parent
;
455 PARA_INFO_LOG("opening %s filters\n", audio_formats
[s
->format
]);
456 assert(s
->fns
== NULL
);
457 s
->fns
= para_calloc(nf
* sizeof(struct filter_node
));
458 parent
= s
->receiver_node
->btrn
;
459 for (i
= 0; i
< nf
; i
++) {
460 struct filter
*f
= filters
+ a
->filter_nums
[i
];
462 fn
->filter_num
= a
->filter_nums
[i
];
463 fn
->conf
= a
->filter_conf
[i
];
464 fn
->task
.pre_select
= f
->pre_select
;
465 fn
->task
.post_select
= f
->post_select
;
466 fn
->btrn
= btr_new_node(f
->name
, parent
, f
->execute
, fn
);
468 register_task(&fn
->task
);
470 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
471 audio_formats
[s
->format
], i
, nf
, f
->name
, s
- slot
);
472 sprintf(fn
->task
.status
, "%s (slot %d)", f
->name
, s
- slot
);
476 static void open_writers(struct slot_info
*s
)
479 struct audio_format_info
*a
= afi
+ s
->format
;
480 struct writer_node
*wn
;
481 struct btr_node
*parent
= s
->fns
[a
->num_filters
- 1].btrn
;
483 assert(s
->wns
== NULL
);
484 s
->wns
= para_calloc(PARA_MAX(1U, a
->num_writers
)
485 * sizeof(struct writer_node
));
486 if (a
->num_writers
== 0)
487 setup_writer_node(NULL
, parent
, s
->wns
);
489 PARA_INFO_LOG("opening %s writers\n", audio_formats
[s
->format
]);
490 for (i
= 0; i
< a
->num_writers
; i
++) {
492 wn
->conf
= a
->writer_conf
[i
];
493 wn
->writer_num
= a
->writer_nums
[i
];
494 register_writer_node(wn
, parent
);
499 /* returns slot num on success */
500 static int open_receiver(int format
)
502 struct audio_format_info
*a
= &afi
[format
];
505 struct receiver
*r
= a
->receiver
;
506 struct receiver_node
*rn
;
507 const struct timeval restart_delay
= {2, 0};
509 ret
= get_empty_slot();
515 s
->receiver_node
= para_calloc(sizeof(struct receiver_node
));
516 rn
= s
->receiver_node
;
518 rn
->conf
= a
->receiver_conf
;
519 rn
->btrn
= btr_new_node(r
->name
, NULL
, NULL
, rn
);
522 btr_free_node(rn
->btrn
);
524 s
->receiver_node
= NULL
;
527 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
528 audio_formats
[s
->format
], r
->name
, slot_num
);
529 rn
->task
.pre_select
= r
->pre_select
;
530 rn
->task
.post_select
= r
->post_select
;
531 sprintf(rn
->task
.status
, "%s receiver node", r
->name
);
532 register_task(&rn
->task
);
536 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
537 tv_add(now
, &restart_delay
, &afi
[format
].restart_barrier
);
541 /* return: 0: Not running, 1: Running, -1: Running but eof (or error) */
542 static int receiver_running(int format
)
547 struct slot_info
*s
= &slot
[i
];
548 if (s
->format
!= format
)
550 if (!s
->receiver_node
)
552 if (s
->receiver_node
->task
.error
>= 0)
559 struct btr_node
*audiod_get_btr_root(void)
561 int i
, newest_slot
= -1;
562 struct timeval newest_rstime
= {0, 0};
565 struct slot_info
*s
= &slot
[i
];
566 struct timeval rstime
;
567 if (!s
->receiver_node
)
569 if (s
->receiver_node
->task
.error
< 0)
571 btr_get_node_start(s
->receiver_node
->btrn
, &rstime
);
572 if (newest_slot
>= 0 && tv_diff(&rstime
, &newest_rstime
, NULL
) < 0)
574 newest_rstime
= rstime
;
577 if (newest_slot
== -1)
579 return slot
[newest_slot
].receiver_node
->btrn
;
582 /* returns slot num on success. */
583 static int open_current_receiver(struct sched
*s
)
586 int ret
, cafn
= stat_task
->current_audio_format_num
;
588 if (cafn
< 0 || !stat_task
->ct
)
590 /* Do nothing if the 'N' flag is set or the 'P' flag is unset */
591 if (stat_task
->vss_status
!= VSS_STATUS_FLAG_PLAYING
)
593 ret
= receiver_running(cafn
);
594 if (ret
> 0) /* already running and not eof */
596 if (ret
< 0) { /* eof */
598 * para_server uses a zero start time during the announcement
599 * period, i.e. before it sends the first chunk. Wait until
600 * this period begins to avoid restarting the receiver that
601 * belongs to the file just completed.
603 if (stat_task
->server_stream_start
.tv_sec
!= 0)
604 sched_request_timeout_ms(100, s
);
606 if (tv_diff(now
, &afi
[cafn
].restart_barrier
, &diff
) < 0) {
607 if (tv_diff(&s
->timeout
, &diff
, NULL
) > 0)
613 /* start a new receiver */
614 return open_receiver(cafn
);
617 static unsigned compute_time_diff(const struct timeval
*status_time
)
619 struct timeval tmp
, diff
;
620 static unsigned count
;
621 int sign
, sa_time_diff_sign
= stat_task
->sa_time_diff_sign
;
622 const struct timeval max_deviation
= {0, 500 * 1000};
623 const int time_smooth
= 5;
627 sign
= tv_diff(status_time
, now
, &diff
);
628 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
629 // sign, sa_time_diff_sign);
631 sa_time_diff_sign
= sign
;
632 stat_task
->sa_time_diff
= diff
;
637 int s
= tv_diff(&diff
, &stat_task
->sa_time_diff
, &tmp
);
638 if (tv_diff(&max_deviation
, &tmp
, NULL
) < 0)
639 PARA_WARNING_LOG("time diff jump: %lims\n",
643 sa_time_diff_sign
= tv_convex_combination(
644 sa_time_diff_sign
* time_smooth
, &stat_task
->sa_time_diff
,
645 count
> 10? sign
: sign
* time_smooth
, &diff
,
647 stat_task
->sa_time_diff
= tmp
;
648 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
651 sa_time_diff_sign
? "+" : "-",
652 tv2ms(&stat_task
->sa_time_diff
)
655 stat_task
->sa_time_diff_sign
= sa_time_diff_sign
;
659 static int update_item(int itemnum
, char *buf
)
661 long unsigned sec
, usec
;
663 if (stat_task
->clock_diff_count
&& itemnum
!= SI_CURRENT_TIME
)
665 free(stat_item_values
[itemnum
]);
666 stat_item_values
[itemnum
] = para_strdup(buf
);
667 stat_client_write_item(itemnum
);
669 case SI_STATUS_FLAGS
:
670 stat_task
->vss_status
= 0;
671 if (strchr(buf
, 'N'))
672 stat_task
->vss_status
|= VSS_STATUS_FLAG_NEXT
;
673 if (strchr(buf
, 'P'))
674 stat_task
->vss_status
|= VSS_STATUS_FLAG_PLAYING
;
677 stat_task
->offset_seconds
= atoi(buf
);
679 case SI_SECONDS_TOTAL
:
680 stat_task
->length_seconds
= atoi(buf
);
682 case SI_STREAM_START
:
683 if (sscanf(buf
, "%lu.%lu", &sec
, &usec
) == 2) {
684 struct timeval a_start
, delay
;
685 delay
.tv_sec
= conf
.stream_delay_arg
/ 1000;
686 delay
.tv_usec
= (conf
.stream_delay_arg
% 1000) * 1000;
687 stat_task
->server_stream_start
.tv_sec
= sec
;
688 stat_task
->server_stream_start
.tv_usec
= usec
;
689 if (compute_time_diff(NULL
) > 2) {
690 if (stat_task
->sa_time_diff_sign
< 0)
691 tv_add(&stat_task
->server_stream_start
,
692 &stat_task
->sa_time_diff
, &a_start
);
694 tv_diff(&stat_task
->server_stream_start
,
695 &stat_task
->sa_time_diff
, &a_start
);
696 tv_add(&a_start
, &delay
, &initial_delay_barrier
);
700 case SI_CURRENT_TIME
:
701 if (sscanf(buf
, "%lu.%lu", &sec
, &usec
) == 2) {
702 struct timeval tv
= {sec
, usec
};
703 compute_time_diff(&tv
);
707 stat_task
->current_audio_format_num
708 = get_audio_format_num(buf
);
713 static int parse_stream_command(const char *txt
, char **cmd
)
715 char *p
= strchr(txt
, ':');
719 return -E_MISSING_COLON
;
721 FOR_EACH_AUDIO_FORMAT(i
) {
722 if (strncmp(txt
, audio_formats
[i
], strlen(audio_formats
[i
])))
727 return -E_UNSUPPORTED_AUDIO_FORMAT
;
730 static int add_filter(int format
, char *cmdline
)
732 struct audio_format_info
*a
= &afi
[format
];
733 int filter_num
, nf
= a
->num_filters
;
735 filter_num
= check_filter_arg(cmdline
, &a
->filter_conf
[nf
]);
738 a
->filter_nums
[nf
] = filter_num
;
740 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats
[format
], nf
,
741 filters
[filter_num
].name
);
745 static int parse_writer_args(void)
749 struct audio_format_info
*a
;
751 nw
= PARA_MAX(1U, conf
.writer_given
);
752 PARA_INFO_LOG("maximal number of writers: %d\n", nw
);
753 FOR_EACH_AUDIO_FORMAT(i
) {
755 a
->writer_conf
= para_malloc(nw
* sizeof(void *));
756 a
->writer_nums
= para_malloc(nw
* sizeof(int));
759 for (i
= 0; i
< conf
.writer_given
; i
++) {
762 ret
= parse_stream_command(conf
.writer_arg
[i
], &cmd
);
767 wconf
= check_writer_arg(cmd
, &writer_num
);
772 a
->writer_nums
[nw
] = writer_num
;
773 a
->writer_conf
[nw
] = wconf
;
774 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats
[ret
],
775 nw
, writer_names
[writer_num
]);
783 static int parse_receiver_args(void)
785 int i
, ret
, receiver_num
;
787 struct audio_format_info
*a
;
789 for (i
= conf
.receiver_given
- 1; i
>= 0; i
--) {
790 char *arg
= conf
.receiver_arg
[i
];
791 char *recv_arg
= strchr(arg
, ':');
792 ret
= -E_MISSING_COLON
;
797 ret
= get_audio_format_num(arg
);
800 afi
[ret
].receiver_conf
= check_receiver_arg(recv_arg
, &receiver_num
);
801 if (!afi
[ret
].receiver_conf
) {
802 ret
= -E_RECV_SYNTAX
;
805 afi
[ret
].receiver
= &receivers
[receiver_num
];
807 /* use the first available receiver with no arguments
808 * for those audio formats for which no receiver
811 cmd
= para_strdup(receivers
[0].name
);
812 FOR_EACH_AUDIO_FORMAT(i
) {
814 if (a
->receiver_conf
)
816 a
->receiver_conf
= check_receiver_arg(cmd
, &receiver_num
);
817 if (!a
->receiver_conf
)
818 return -E_RECV_SYNTAX
;
819 a
->receiver
= &receivers
[receiver_num
];
827 static int init_default_filters(void)
831 FOR_EACH_AUDIO_FORMAT(i
) {
832 struct audio_format_info
*a
= &afi
[i
];
837 continue; /* no default -- nothing to to */
838 /* add "dec" to audio format name */
839 tmp
= make_message("%sdec", audio_formats
[i
]);
840 for (j
= 0; filters
[j
].name
; j
++)
841 if (!strcmp(tmp
, filters
[j
].name
))
844 ret
= -E_UNSUPPORTED_FILTER
;
845 if (!filters
[j
].name
)
847 tmp
= para_strdup(filters
[j
].name
);
848 ret
= add_filter(i
, tmp
);
852 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats
[i
],
859 static int parse_filter_args(void)
863 nf
= PARA_MAX(1U, conf
.filter_given
);
864 PARA_INFO_LOG("maximal number of filters: %d\n", nf
);
865 FOR_EACH_AUDIO_FORMAT(i
) {
866 afi
[i
].filter_conf
= para_malloc(nf
* sizeof(void *));
867 afi
[i
].filter_nums
= para_malloc(nf
* sizeof(unsigned));
869 if (!conf
.no_default_filters_given
)
870 return init_default_filters();
871 for (i
= 0; i
< conf
.filter_given
; i
++) {
872 char *arg
= conf
.filter_arg
[i
];
873 char *filter_name
= strchr(arg
, ':');
874 ret
= -E_MISSING_COLON
;
879 ret
= get_audio_format_num(arg
);
882 ret
= add_filter(ret
, filter_name
);
886 ret
= init_default_filters(); /* use default values for the rest */
891 static int parse_stream_args(void)
895 ret
= parse_receiver_args();
898 ret
= parse_filter_args();
901 ret
= parse_writer_args();
907 /* does not unlink socket on errors */
908 static int audiod_get_socket(void)
910 struct sockaddr_un unix_addr
;
913 if (conf
.socket_given
)
914 socket_name
= para_strdup(conf
.socket_arg
);
916 char *hn
= para_hostname();
917 socket_name
= make_message("/var/paraslash/audiod_socket.%s",
921 PARA_NOTICE_LOG("local socket: %s\n", socket_name
);
922 if (conf
.force_given
)
924 ret
= create_local_socket(socket_name
, &unix_addr
,
925 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
929 if (listen(fd
, 5) < 0) {
930 ret
= -ERRNO_TO_PARA_ERROR(errno
);
933 ret
= mark_fd_nonblocking(fd
);
938 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
942 static void signal_pre_select(struct sched
*s
, struct task
*t
)
944 struct signal_task
*st
= container_of(t
, struct signal_task
, task
);
945 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
948 static void signal_post_select(struct sched
*s
, struct task
*t
)
950 struct signal_task
*st
= container_of(t
, struct signal_task
, task
);
952 if (!FD_ISSET(st
->fd
, &s
->rfds
))
955 st
->signum
= para_next_signal();
956 switch (st
->signum
) {
960 PARA_EMERG_LOG("terminating on signal %d\n", st
->signum
);
961 clean_exit(EXIT_FAILURE
, "caught deadly signal");
965 static void signal_setup_default(struct signal_task
*st
)
967 st
->task
.pre_select
= signal_pre_select
;
968 st
->task
.post_select
= signal_post_select
;
969 sprintf(st
->task
.status
, "signal task");
972 static void command_pre_select(struct sched
*s
, struct task
*t
)
974 struct command_task
*ct
= container_of(t
, struct command_task
, task
);
975 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
978 static void command_post_select(struct sched
*s
, struct task
*t
)
981 struct command_task
*ct
= container_of(t
, struct command_task
, task
);
982 static struct timeval last_status_dump
;
983 struct timeval tmp
, delay
= {0, 500 * 1000};
985 tv_add(&last_status_dump
, &delay
, &tmp
);
986 if (tv_diff(&tmp
, now
, NULL
) < 0) {
987 audiod_status_dump();
988 last_status_dump
= *now
;
991 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
993 ret
= handle_connect(ct
->fd
);
995 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
998 static void init_command_task(struct command_task
*ct
)
1000 ct
->task
.pre_select
= command_pre_select
;
1001 ct
->task
.post_select
= command_post_select
;
1003 ct
->fd
= audiod_get_socket(); /* doesn't return on errors */
1004 sprintf(ct
->task
.status
, "command task");
1007 static void close_stat_pipe(void)
1011 client_close(stat_task
->ct
);
1012 stat_task
->ct
= NULL
;
1013 clear_and_dump_items();
1014 stat_task
->length_seconds
= 0;
1015 stat_task
->offset_seconds
= 0;
1016 stat_task
->vss_status
= 0;
1017 stat_task
->current_audio_format_num
= -1;
1018 audiod_status_dump();
1022 * close the connection to para_server and exit
1024 * \param status the exit status which is passed to exit(3)
1025 * \param msg the log message
1027 * Log \a msg with loglevel \p EMERG, close the connection to para_server if
1028 * open, and call \p exit(status). \a status should be either EXIT_SUCCESS or
1033 void __noreturn
clean_exit(int status
, const char *msg
)
1035 PARA_EMERG_LOG("%s\n", msg
);
1037 unlink(socket_name
);
1042 /* avoid busy loop if server is down */
1043 static void set_stat_task_restart_barrier(unsigned seconds
)
1045 struct timeval delay
= {seconds
, 0};
1046 tv_add(now
, &delay
, &stat_task
->restart_barrier
);
1049 static bool try_to_close_slot(int slot_num
)
1051 struct slot_info
*s
= &slot
[slot_num
];
1052 struct audio_format_info
*a
= afi
+ s
->format
;
1057 if (s
->receiver_node
&& s
->receiver_node
->task
.error
!= -E_TASK_UNREGISTERED
)
1059 for (i
= 0; i
< a
->num_filters
; i
++)
1060 if (s
->fns
&& s
->fns
[i
].task
.error
!= -E_TASK_UNREGISTERED
)
1062 for (i
= 0; i
< a
->num_writers
; i
++)
1063 if (s
->wns
&& s
->wns
[i
].task
.error
!= -E_TASK_UNREGISTERED
)
1065 PARA_INFO_LOG("closing slot %d\n", slot_num
);
1068 close_receiver(slot_num
);
1069 clear_slot(slot_num
);
1074 * Check if any receivers/filters/writers need to be started and do so if
1077 static void start_stop_decoders(struct sched
*s
)
1080 struct slot_info
*sl
;
1081 struct audio_format_info
*a
;
1084 if (try_to_close_slot(i
))
1086 // if (audiod_status != AUDIOD_ON ||
1087 // !(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING))
1088 // return kill_all_decoders(-E_NOT_PLAYING);
1089 ret
= open_current_receiver(s
);
1093 a
= afi
+ sl
->format
;
1097 activate_grab_clients();
1098 btr_log_tree(sl
->receiver_node
->btrn
, LL_NOTICE
);
1102 /* restart the client task if necessary */
1103 static void status_pre_select(struct sched
*s
, struct task
*t
)
1105 struct status_task
*st
= container_of(t
, struct status_task
, task
);
1107 if (audiod_status
== AUDIOD_OFF
) {
1110 if (st
->ct
->task
.error
>= 0) {
1111 st
->ct
->task
.error
= -E_AUDIOD_OFF
;
1114 if (st
->ct
->task
.error
!= -E_TASK_UNREGISTERED
)
1117 st
->clock_diff_count
= conf
.clock_diff_count_arg
;
1122 if (st
->ct
->task
.error
< 0) {
1123 if (st
->ct
->task
.error
!= -E_TASK_UNREGISTERED
)
1128 if (st
->ct
->status
!= CL_RECEIVING
)
1130 ret
= for_each_stat_item(st
->ct
->buf
, st
->ct
->loaded
,
1133 st
->ct
->task
.error
= ret
;
1136 if (st
->ct
->loaded
!= ret
) {
1137 st
->last_status_read
= *now
;
1138 st
->ct
->loaded
= ret
;
1140 struct timeval diff
;
1141 tv_diff(now
, &st
->last_status_read
, &diff
);
1142 if (diff
.tv_sec
> 61)
1143 st
->ct
->task
.error
= -E_STATUS_TIMEOUT
;
1147 if (tv_diff(now
, &st
->restart_barrier
, NULL
) < 0)
1149 if (st
->clock_diff_count
) { /* get status only one time */
1150 char *argv
[] = {"audiod", "--", "stat", "-p", "-n=1", NULL
};
1152 PARA_INFO_LOG("clock diff count: %d\n", st
->clock_diff_count
);
1153 st
->clock_diff_count
--;
1154 client_open(argc
, argv
, &st
->ct
, NULL
);
1155 set_stat_task_restart_barrier(2);
1159 char *argv
[] = {"audiod", "--", "stat", "-p", NULL
};
1161 client_open(argc
, argv
, &st
->ct
, NULL
);
1162 set_stat_task_restart_barrier(5);
1165 free(stat_item_values
[SI_BASENAME
]);
1166 stat_item_values
[SI_BASENAME
] = para_strdup(
1167 "no connection to para_server");
1168 stat_client_write_item(SI_BASENAME
);
1169 st
->last_status_read
= *now
;
1171 start_stop_decoders(s
);
1174 static void init_status_task(struct status_task
*st
)
1176 memset(st
, 0, sizeof(struct status_task
));
1177 st
->task
.pre_select
= status_pre_select
;
1178 st
->sa_time_diff_sign
= 1;
1179 st
->clock_diff_count
= conf
.clock_diff_count_arg
;
1180 st
->current_audio_format_num
= -1;
1181 sprintf(st
->task
.status
, "status task");
1184 static void set_initial_status(void)
1186 audiod_status
= AUDIOD_ON
;
1187 if (!conf
.mode_given
)
1189 if (!strcmp(conf
.mode_arg
, "sb")) {
1190 audiod_status
= AUDIOD_STANDBY
;
1193 if (!strcmp(conf
.mode_arg
, "off")) {
1194 audiod_status
= AUDIOD_OFF
;
1197 if (strcmp(conf
.mode_arg
, "on"))
1198 PARA_WARNING_LOG("invalid mode\n");
1201 __noreturn
static void print_help_and_die(void)
1203 int d
= conf
.detailed_help_given
;
1204 const char **p
= d
? audiod_args_info_detailed_help
1205 : audiod_args_info_help
;
1207 printf_or_die("%s\n\n", AUDIOD_CMDLINE_PARSER_PACKAGE
"-"
1208 AUDIOD_CMDLINE_PARSER_VERSION
);
1209 printf_or_die("%s\n\n", audiod_args_info_usage
);
1211 printf_or_die("%s\n", *p
);
1212 print_receiver_helps(d
);
1213 print_filter_helps(d
);
1214 print_writer_helps(d
);
1218 static void init_colors_or_die(void)
1224 daemon_set_default_log_colors();
1225 daemon_set_flag(DF_COLOR_LOG
);
1226 for (i
= 0; i
< conf
.log_color_given
; i
++) {
1227 ret
= daemon_set_log_color(conf
.log_color_arg
[i
]);
1234 * the main function of para_audiod
1236 * \param argc usual argument count
1237 * \param argv usual argument vector
1239 * \return EXIT_SUCCESS or EXIT_FAILURE
1241 * \sa para_audiod(1)
1243 int main(int argc
, char *argv
[])
1246 static struct sched s
;
1247 struct command_task command_task_struct
, *cmd_task
= &command_task_struct
;
1248 struct audiod_cmdline_parser_params params
= {
1251 .check_required
= 0,
1252 .check_ambiguity
= 0,
1257 if (audiod_cmdline_parser_ext(argc
, argv
, &conf
, ¶ms
))
1259 HANDLE_VERSION_FLAG("audiod", conf
);
1260 /* init receivers/filters/writers early to make help work */
1264 if (conf
.help_given
|| conf
.detailed_help_given
)
1265 print_help_and_die();
1266 drop_privileges_or_die(conf
.user_arg
, conf
.group_arg
);
1267 parse_config_or_die();
1268 init_colors_or_die();
1269 init_random_seed_or_die();
1270 daemon_set_flag(DF_LOG_TIME
);
1271 daemon_set_flag(DF_LOG_HOSTNAME
);
1272 daemon_set_flag(DF_LOG_LL
);
1273 if (conf
.log_timing_given
)
1274 daemon_set_flag(DF_LOG_TIMING
);
1275 if (conf
.logfile_given
) {
1276 daemon_set_logfile(conf
.logfile_arg
);
1277 daemon_open_log_or_die();
1279 ret
= parse_stream_args();
1281 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
1284 log_welcome("para_audiod");
1285 server_uptime(UPTIME_SET
);
1286 set_initial_status();
1289 setup_signal_handling();
1290 signal_setup_default(sig_task
);
1292 init_status_task(stat_task
);
1293 init_command_task(cmd_task
);
1295 if (conf
.daemon_given
)
1298 register_task(&sig_task
->task
);
1299 register_task(&cmd_task
->task
);
1300 register_task(&stat_task
->task
);
1301 s
.default_timeout
.tv_sec
= 2;
1302 s
.default_timeout
.tv_usec
= 999 * 1000;
1305 PARA_EMERG_LOG("%s\n", para_strerror(-ret
));
1306 return EXIT_FAILURE
;