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"
25 #include "close_on_fork.h"
29 #include "grab_client.cmdline.h"
30 #include "grab_client.h"
39 #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
;
47 * the possible modes of operation
49 * - off: disconnect from para_server
50 * - on: receive status information from para_server and play the audio stream
51 * - sb: only receive status information but not the audio stream
53 enum {AUDIOD_OFF
, AUDIOD_ON
, AUDIOD_STANDBY
};
55 /** defines how to handle one supported audio format */
56 struct audio_format_info
{
57 /** pointer to the receiver for this audio format */
58 struct receiver
*receiver
;
59 /** the receiver configuration */
61 /** the number of filters that should be activated for this audio format */
62 unsigned int num_filters
;
63 /** pointer to the array of filters to be activated */
64 struct filter
**filters
;
65 /** pointer to the array of filter configurations */
67 /** the number of filters that should be activated for this audio format */
68 unsigned int num_writers
;
69 /** pointer to the array of writers to be activated */
70 struct writer
**writers
;
71 /** pointer to the array of writer configurations */
73 /** do not start receiver/filters/writer before this time */
74 struct timeval restart_barrier
;
78 * describes one instance of a receiver-filter-writer chain
80 * \sa receier_node, receiver, filter, filter_node, filter_chain, writer,
81 * writer_node, writer_node_group.
84 /** number of the audio format in this slot */
86 /** writer start time */
87 struct timeval wstime
;
88 /** the receiver info associated with this slot */
89 struct receiver_node
*receiver_node
;
90 /** the active filter chain */
91 struct filter_chain
*fc
;
92 /** the active writer node group */
93 struct writer_node_group
*wng
;
95 static struct slot_info slot
[MAX_STREAM_SLOTS
];
97 extern const char *status_item_list
[NUM_STAT_ITEMS
];
99 static struct gengetopt_args_info conf
;
100 static struct timeval server_stream_start
, sa_time_diff
;
101 static int playing
, current_decoder
= -1,
102 audiod_status
= AUDIOD_ON
, offset_seconds
, length_seconds
,
103 sa_time_diff_sign
= 1;
104 static char *af_status
, /* the audio format announced in server status */
105 *socket_name
, *hostname
;
106 static char *stat_item_values
[NUM_STAT_ITEMS
];
107 static FILE *logfile
;
108 static const struct timeval restart_delay
= {0, 300 * 1000};
109 static struct audio_format_info afi
[NUM_AUDIO_FORMATS
];
110 static struct timeval
*now
;
112 static struct signal_task signal_task_struct
, *sig_task
= &signal_task_struct
;
115 * the task for handling audiod commands
117 * \sa struct task, struct sched
119 struct command_task
{
120 /** the local listening socket */
122 /** the associated task structure */
127 * the task for audiod's child (para_client stat)
129 * \sa struct task, struct sched
132 /** the output of the stat command is read from this fd */
134 /** stat data is stored here */
135 char buf
[STRINGSIZE
];
136 /** number of bytes loaded in \a buf */
138 /** the associated task structure */
141 static struct status_task status_task_struct
, *stat_task
= &status_task_struct
;
149 /** defines one command of para_audiod */
150 struct audiod_command
{
151 /** the name of the command */
153 /** pointer to the function that handles the command */
154 int (*handler
)(int, int, char**);
156 * if the command prefers to handle the full line (rather than the usual
157 * argv[] array), it stores a pointer to the corresponding line handling
158 * function here. In this case, the above \a handler pointer must be NULL.
160 int (*line_handler
)(int, char*);
161 /** one-line description of the command */
162 const char *description
;
163 /** summary of the command line options */
164 const char *synopsis
;
165 /** the long help text */
168 static int com_grab(int, char *);
169 static int com_cycle(int, int, char **);
170 static int com_help(int, int, char **);
171 static int com_off(int, int, char **);
172 static int com_on(int, int, char **);
173 static int com_sb(int, int, char **);
174 static int com_stat(int, int, char **);
175 static int com_term(int, int, char **);
176 static struct audiod_command cmds
[] = {
179 .handler
= com_cycle
,
180 .description
= "switch to next mode",
184 "on -> standby -> off -> on\n"
189 .line_handler
= com_grab
,
190 .description
= "grab the audio stream",
191 .synopsis
= "-- grab [grab_options]",
194 "grab ('splice') the audio stream at any position in the filter \n"
195 "chain and send that data back to the client. Try\n"
196 "\t para_audioc -- grab -h\n"
197 "for the list of available options.\n"
203 .description
= "display command list or help for given command",
204 .synopsis
= "help [command]",
207 "When I was younger, so much younger than today, I never needed\n"
208 "anybody's help in any way. But now these days are gone, I'm not so\n"
209 "self assured. Now I find I've changed my mind and opened up the doors.\n"
211 " -- Beatles: Help\n"
217 .description
= "deactivate para_audiod",
221 "Close connection to para_server and stop all decoders.\n"
227 .description
= "activate para_audiod",
231 "Establish connection to para_server, retrieve para_server's current\n"
232 "status. If playing, start corresponding decoder. Otherwise stop\n"
239 .description
= "enter standby mode",
243 "Stop all decoders but leave connection to para_server open.\n"
249 .description
= "print status information",
250 .synopsis
= "stat [item1 ...]",
253 "Dump given status items (all if none given) to stdout.\n"
259 .description
= "terminate audiod",
263 "Stop all decoders, shut down connection to para_server and exit.\n"
271 /** iterate over all slots */
272 #define FOR_EACH_SLOT(_slot) for (_slot = 0; _slot < MAX_STREAM_SLOTS; _slot++)
273 /** iterate over all supported audio formats */
274 #define FOR_EACH_AUDIO_FORMAT(af) for (af = 0; af < NUM_AUDIO_FORMATS; af++)
275 /** iterate over the array of all audiod commands */
276 #define FOR_EACH_COMMAND(c) for (c = 0; cmds[c].name; c++)
279 * get the audio format number
280 * \param name the name of the audio format
282 * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if
283 * \a name is not a supported audio format.
285 int get_audio_format_num(char *name
)
288 FOR_EACH_AUDIO_FORMAT(i
)
289 if (!strcmp(name
, audio_formats
[i
]))
291 return -E_UNSUPPORTED_AUDIO_FORMAT
;
295 * log function. first argument is loglevel.
297 void para_log(int ll
, const char* fmt
,...)
303 char str
[MAXLINE
] = "";
305 if (ll
< conf
.loglevel_arg
)
307 outfd
= logfile
? logfile
: stderr
;
310 strftime(str
, MAXLINE
, "%b %d %H:%M:%S", tm
);
311 fprintf(outfd
, "%s %s ", str
, hostname
);
312 if (conf
.loglevel_arg
<= INFO
)
313 fprintf(outfd
, "%i ", ll
);
315 vfprintf(outfd
, fmt
, argp
);
319 static int client_write(int fd
, const char *buf
)
321 size_t len
= strlen(buf
);
322 return write(fd
, buf
, len
) != len
? -E_CLIENT_WRITE
: 1;
325 static char *get_time_string(struct timeval
*newest_stime
)
327 struct timeval diff
, adj_stream_start
, tmp
;
328 int total
= 0, use_server_time
= 1;
333 return make_message("%s:\n", status_item_list
[SI_PLAY_TIME
]);
335 if (audiod_status
== AUDIOD_OFF
)
337 if (sa_time_diff_sign
> 0)
338 tv_diff(&server_stream_start
, &sa_time_diff
,
341 tv_add(&server_stream_start
, &sa_time_diff
,
343 tmp
= adj_stream_start
;
344 if (newest_stime
&& audiod_status
== AUDIOD_ON
) {
345 tv_diff(newest_stime
, &adj_stream_start
, &diff
);
346 if (tv2ms(&diff
) < 5000) {
351 tv_diff(now
, &tmp
, &diff
);
352 total
= diff
.tv_sec
+ offset_seconds
;
353 if (total
> length_seconds
)
354 total
= length_seconds
;
359 "%s:%s%d:%02d [%d:%02d] (%d%%/%d:%02d)\n",
360 status_item_list
[SI_PLAY_TIME
],
361 use_server_time
? "~" : "",
364 (length_seconds
- total
) / 60,
365 (length_seconds
- total
) % 60,
366 length_seconds
? (total
* 100 + length_seconds
/ 2) /
373 __malloc
static char *audiod_status_string(void)
375 const char *status
= (audiod_status
== AUDIOD_ON
)?
376 "on" : (audiod_status
== AUDIOD_OFF
)? "off": "sb";
377 return make_message("%s:%s\n", status_item_list
[SI_AUDIOD_STATUS
], status
);
380 static struct timeval
*wstime(void)
383 struct timeval
*max
= NULL
;
385 struct slot_info
*s
= &slot
[i
];
388 if (max
&& tv_diff(&s
->wstime
, max
, NULL
) <= 0)
394 __malloc
static char *decoder_flags(void)
397 char decoder_flags
[MAX_STREAM_SLOTS
+ 1];
400 struct slot_info
*s
= &slot
[i
];
402 if (s
->receiver_node
)
406 decoder_flags
[i
] = flag
;
408 decoder_flags
[MAX_STREAM_SLOTS
] = '\0';
409 return make_message("%s:%s\n", status_item_list
[SI_DECODER_FLAGS
],
413 static char *configfile_exists(void)
415 static char *config_file
;
418 char *home
= para_homedir();
419 config_file
= make_message("%s/.paraslash/audiod.conf", home
);
422 return file_exists(config_file
)? config_file
: NULL
;
425 static void setup_signal_handling(void)
427 sig_task
->fd
= para_signal_init();
428 PARA_INFO_LOG("signal pipe: fd %d\n", sig_task
->fd
);
429 para_install_sighandler(SIGINT
);
430 para_install_sighandler(SIGTERM
);
431 para_install_sighandler(SIGCHLD
);
432 para_install_sighandler(SIGHUP
);
433 signal(SIGPIPE
, SIG_IGN
);
436 static void audiod_status_dump(void)
438 static char *p_ts
, *p_us
, *p_as
, *p_df
;
439 struct timeval
*t
= wstime();
440 char *us
, *tmp
= get_time_string(t
);
442 if (tmp
&& (!p_ts
|| strcmp(tmp
, p_ts
)))
443 stat_client_write(tmp
, SI_PLAY_TIME
);
448 tmp
= make_message("%s:%s\n", status_item_list
[SI_AUDIOD_UPTIME
], us
);
450 if (!p_us
|| strcmp(p_us
, tmp
))
451 stat_client_write(tmp
, SI_AUDIOD_UPTIME
);
455 tmp
= audiod_status_string();
456 if (!p_as
|| strcmp(p_as
, tmp
))
457 stat_client_write(tmp
, SI_AUDIOD_STATUS
);
461 tmp
= decoder_flags();
462 if (!p_df
|| strcmp(p_df
, tmp
))
463 stat_client_write(tmp
, SI_DECODER_FLAGS
);
468 static void clear_slot(int slot_num
)
470 struct slot_info
*s
= &slot
[slot_num
];
472 PARA_INFO_LOG("clearing slot %d\n", slot_num
);
473 memset(s
, 0, sizeof(struct slot_info
));
477 static void close_receiver(int slot_num
)
479 struct slot_info
*s
= &slot
[slot_num
];
480 struct audio_format_info
*a
;
482 if (s
->format
< 0 || !s
->receiver_node
)
485 PARA_NOTICE_LOG("closing %s receiver in slot %d (eof = %d)\n",
486 audio_formats
[s
->format
] , slot_num
, s
->receiver_node
->eof
);
487 if (!s
->receiver_node
->eof
)
488 unregister_task(&s
->receiver_node
->task
);
489 a
->receiver
->close(s
->receiver_node
);
490 free(s
->receiver_node
);
491 s
->receiver_node
= NULL
;
492 /* set restart barrier */
493 tv_add(now
, &restart_delay
, &afi
[s
->format
].restart_barrier
);
496 static void kill_all_decoders(void)
501 struct slot_info
*s
= &slot
[i
];
502 if (s
->receiver_node
)
503 s
->receiver_node
->eof
= 1;
507 static int get_empty_slot(void)
518 if (s
->wng
|| s
->receiver_node
|| s
->fc
)
523 return -E_NO_MORE_SLOTS
;
526 static int decoder_running(int format
)
533 if (s
->format
== format
&& s
->receiver_node
)
535 if (s
->format
== format
&& s
->wng
)
541 static void close_stat_pipe(void)
545 if (stat_task
->fd
< 0)
547 PARA_NOTICE_LOG("%s", "closing status pipe\n");
548 close(stat_task
->fd
);
549 del_close_on_fork_list(stat_task
->fd
);
552 for (i
= 0; i
< NUM_STAT_ITEMS
; i
++) {
553 free(stat_item_values
[i
]);
554 stat_item_values
[i
] = NULL
;
559 audiod_status_dump();
561 stat_item_values
[SI_STATUS_BAR
] = make_message(
562 "%s:no connection to para_server\n",
563 status_item_list
[SI_STATUS_BAR
]);
564 stat_client_write(stat_item_values
[SI_STATUS_BAR
], SI_STATUS_BAR
);
567 static void __noreturn
clean_exit(int status
, const char *msg
)
569 PARA_EMERG_LOG("%s\n", msg
);
572 if (stat_task
->fd
>= 0)
578 * get the number of filters
580 * \param audio_format_num the number identifying the audio format
582 * \return the number of filters for the given audio format
586 int num_filters(int audio_format_num
)
588 return afi
[audio_format_num
].num_filters
;
591 static void filter_event_handler(struct task
*t
)
593 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
597 static void open_filters(int slot_num
)
599 struct slot_info
*s
= &slot
[slot_num
];
600 struct audio_format_info
*a
= &afi
[s
->format
];
601 int nf
= a
->num_filters
;
607 PARA_INFO_LOG("opening %s filters\n", audio_formats
[s
->format
]);
608 s
->fc
= para_calloc(sizeof(struct filter_chain
));
609 INIT_LIST_HEAD(&s
->fc
->filters
);
610 s
->fc
->inbuf
= s
->receiver_node
->buf
;
611 s
->fc
->in_loaded
= &s
->receiver_node
->loaded
;
612 s
->fc
->input_eof
= &s
->receiver_node
->eof
;
614 s
->fc
->task
.pre_select
= filter_pre_select
;
615 s
->fc
->task
.event_handler
= filter_event_handler
;
616 s
->fc
->task
.private_data
= s
->fc
;
617 s
->fc
->task
.flags
= 0;
619 sprintf(s
->fc
->task
.status
, "filter chain");
620 for (i
= 0; i
< nf
; i
++) {
621 struct filter_node
*fn
= para_calloc(sizeof(struct filter_node
));
622 fn
->conf
= a
->filter_conf
[i
];
624 fn
->filter
= a
->filters
[i
];
625 INIT_LIST_HEAD(&fn
->callbacks
);
626 list_add_tail(&fn
->node
, &s
->fc
->filters
);
627 fn
->filter
->open(fn
);
628 PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
629 audio_formats
[s
->format
], i
+ 1, nf
,
630 fn
->filter
->name
, slot_num
);
631 s
->fc
->outbuf
= fn
->buf
;
632 s
->fc
->out_loaded
= &fn
->loaded
;
634 register_task(&s
->fc
->task
);
637 static struct filter_node
*find_filter_node(int slot_num
, int format
, int filternum
)
639 struct filter_node
*fn
;
643 struct slot_info
*s
= &slot
[i
];
644 if (s
->format
< 0 || !s
->fc
)
646 if (slot_num
>= 0 && slot_num
!= i
)
648 if (format
>= 0 && s
->format
!= format
)
650 if (num_filters(i
) < filternum
)
654 list_for_each_entry(fn
, &s
->fc
->filters
, node
)
655 if (filternum
<= 0 || j
++ == filternum
)
662 static void wng_event_handler(struct task
*t
)
664 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
668 static void open_writers(int slot_num
)
671 struct slot_info
*s
= &slot
[slot_num
];
672 struct audio_format_info
*a
= &afi
[s
->format
];
674 PARA_INFO_LOG("opening %s writers\n", audio_formats
[s
->format
]);
676 s
->wng
= setup_default_wng();
678 s
->wng
= wng_new(a
->num_writers
);
680 s
->wng
->buf
= s
->fc
->outbuf
;
681 s
->wng
->loaded
= s
->fc
->out_loaded
;
682 s
->wng
->input_eof
= &s
->fc
->eof
;
683 s
->wng
->channels
= &s
->fc
->channels
;
684 s
->wng
->samplerate
= &s
->fc
->samplerate
;
685 s
->fc
->output_eof
= &s
->wng
->eof
;
686 PARA_INFO_LOG("samplerate: %d\n", *s
->wng
->samplerate
);
688 s
->wng
->buf
= s
->receiver_node
->buf
;
689 s
->wng
->loaded
= &s
->receiver_node
->loaded
;
690 s
->wng
->input_eof
= &s
->receiver_node
->eof
;
692 s
->wng
->task
.event_handler
= wng_event_handler
;
693 for (i
= 0; i
< a
->num_writers
; i
++) {
694 s
->wng
->writer_nodes
[i
].conf
= a
->writer_conf
[i
];
695 s
->wng
->writer_nodes
[i
].writer
= a
->writers
[i
];
696 sprintf(s
->wng
->writer_nodes
[i
].task
.status
, "writer_node");
698 ret
= wng_open(s
->wng
); /* FIXME */
700 current_decoder
= slot_num
;
701 activate_inactive_grab_clients(slot_num
, s
->format
, &s
->fc
->filters
);
704 static void rn_event_handler(struct task
*t
)
706 // struct receiver_node *rn = t->private_data;
707 PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t
->ret
));
711 static void open_receiver(int format
)
713 struct audio_format_info
*a
= &afi
[format
];
716 struct receiver_node
*rn
;
718 slot_num
= get_empty_slot();
720 clean_exit(EXIT_FAILURE
, PARA_STRERROR(-slot_num
));
723 s
->receiver_node
= para_calloc(sizeof(struct receiver_node
));
724 rn
= s
->receiver_node
;
725 rn
->receiver
= a
->receiver
;
726 rn
->conf
= a
->receiver_conf
;
727 ret
= a
->receiver
->open(s
->receiver_node
);
729 PARA_ERROR_LOG("failed to open receiver (%s)\n",
730 PARA_STRERROR(-ret
));
731 free(s
->receiver_node
);
732 s
->receiver_node
= NULL
;
735 PARA_NOTICE_LOG("started %s: %s receiver in slot %d\n",
736 audio_formats
[s
->format
], a
->receiver
->name
, slot_num
);
737 rn
->task
.private_data
= s
->receiver_node
;
738 rn
->task
.pre_select
= a
->receiver
->pre_select
;
739 rn
->task
.post_select
= a
->receiver
->post_select
;
740 rn
->task
.event_handler
= rn_event_handler
;
742 sprintf(rn
->task
.status
, "receiver node");
743 register_task(&rn
->task
);
746 static int is_frozen(int format
)
748 struct audio_format_info
*a
= &afi
[format
];
750 return (tv_diff(now
, &a
->restart_barrier
, NULL
) > 0)? 0 : 1;
753 static void open_current_receiver(void)
759 i
= get_audio_format_num(af_status
);
762 if (decoder_running(i
) || is_frozen(i
))
767 static void compute_time_diff(const struct timeval
*status_time
)
769 struct timeval tmp
, diff
;
772 const struct timeval max_deviation
= {0, 500 * 1000};
773 const int time_smooth
= 5;
775 sign
= tv_diff(status_time
, now
, &diff
);
776 // PARA_NOTICE_LOG("%s: sign = %i, sa_time_diff_sign = %i\n", __func__,
777 // sign, sa_time_diff_sign);
779 sa_time_diff_sign
= sign
;
785 int s
= tv_diff(&diff
, &sa_time_diff
, &tmp
);
786 if (tv_diff(&max_deviation
, &tmp
, NULL
) < 0)
787 PARA_WARNING_LOG("time diff jump: %lims\n",
791 sa_time_diff_sign
= tv_convex_combination(
792 sa_time_diff_sign
* time_smooth
, &sa_time_diff
,
793 count
> 10? sign
: sign
* time_smooth
, &diff
,
796 PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
799 sa_time_diff_sign
? "+" : "-",
804 static void check_stat_line(char *line
)
808 long unsigned sec
, usec
;
811 // PARA_INFO_LOG("line: %s\n", line);
814 itemnum
= stat_line_valid(line
);
816 PARA_WARNING_LOG("invalid status line: %s\n", line
);
819 tmp
= make_message("%s\n", line
);
820 stat_client_write(tmp
, itemnum
);
822 free(stat_item_values
[itemnum
]);
823 stat_item_values
[itemnum
] = para_strdup(line
);
824 ilen
= strlen(status_item_list
[itemnum
]);
827 playing
= strstr(line
, "playing")? 1 : 0;
831 af_status
= para_strdup(line
+ ilen
+ 1);
834 offset_seconds
= atoi(line
+ ilen
+ 1);
837 length_seconds
= atoi(line
+ ilen
+ 1);
839 case SI_STREAM_START
:
840 if (sscanf(line
+ ilen
+ 1, "%lu.%lu", &sec
, &usec
) == 2) {
841 server_stream_start
.tv_sec
= sec
;
842 server_stream_start
.tv_usec
= usec
;
845 case SI_CURRENT_TIME
:
846 if (sscanf(line
+ ilen
+ 1, "%lu.%lu", &sec
, &usec
) == 2) {
847 struct timeval tv
= {sec
, usec
};
848 compute_time_diff(&tv
);
854 static void handle_signal(int sig
)
859 pid_t pid
= para_reap_child();
862 PARA_CRIT_LOG("para_client died (pid %d)\n", pid
);
867 PARA_EMERG_LOG("terminating on signal %d\n", sig
);
868 clean_exit(EXIT_FAILURE
, "caught deadly signal");
873 static void try_to_close_slot(int slot_num
)
875 struct slot_info
*s
= &slot
[slot_num
];
879 if (s
->receiver_node
&& !s
->receiver_node
->eof
)
881 if (s
->fc
&& !s
->fc
->eof
)
883 if (s
->wng
&& !s
->wng
->eof
)
885 PARA_INFO_LOG("closing slot %d \n", slot_num
);
888 close_filters(s
->fc
);
890 close_receiver(slot_num
);
891 clear_slot(slot_num
);
894 static void audiod_pre_select(struct sched
*s
, __a_unused
struct task
*t
)
900 if (audiod_status
!= AUDIOD_ON
)
903 open_current_receiver();
905 struct slot_info
*s
= &slot
[i
];
906 struct audio_format_info
*a
;
908 try_to_close_slot(i
);
912 if (!s
->receiver_node
)
914 if (!a
->num_filters
) {
915 if (s
->receiver_node
->loaded
&& !s
->wng
)
919 if (s
->receiver_node
->loaded
&& !s
->fc
) {
923 if (s
->fc
&& *s
->fc
->out_loaded
&& !s
->wng
)
928 static void audiod_post_select(struct sched
*s
, __a_unused
struct task
*t
)
930 /* only save away the current time for other users */
935 static void init_audiod_task(struct task
*t
)
937 t
->pre_select
= audiod_pre_select
;
938 t
->post_select
= audiod_post_select
;
939 t
->event_handler
= NULL
;
942 sprintf(t
->status
, "audiod task");
945 static int parse_stream_command(const char *txt
, char **cmd
)
947 char *p
= strchr(txt
, ':');
951 return -E_MISSING_COLON
;
953 FOR_EACH_AUDIO_FORMAT(i
) {
954 if (strncmp(txt
, audio_formats
[i
], strlen(audio_formats
[i
])))
959 return -E_UNSUPPORTED_AUDIO_FORMAT
;
962 static int add_filter(int format
, char *cmdline
)
964 struct audio_format_info
*a
= &afi
[format
];
965 int filter_num
, nf
= a
->num_filters
;
967 filter_num
= check_filter_arg(cmdline
, &a
->filter_conf
[nf
]);
970 a
->filters
[nf
] = &filters
[filter_num
];
972 PARA_INFO_LOG("%s filter %d: %s\n", audio_formats
[format
], nf
+ 1,
973 a
->filters
[nf
]->name
);
977 static int init_writers(void)
981 struct audio_format_info
*a
;
983 init_supported_writers();
984 nw
= PARA_MAX(1, conf
.writer_given
);
985 PARA_INFO_LOG("maximal number of writers: %d\n", nw
);
986 FOR_EACH_AUDIO_FORMAT(i
) {
988 a
->writer_conf
= para_malloc(nw
* sizeof(void *));
989 a
->writers
= para_malloc(nw
* sizeof(struct writer
*));
992 for (i
= 0; i
< conf
.writer_given
; i
++) {
995 ret
= parse_stream_command(conf
.writer_arg
[i
], &cmd
);
1000 wconf
= check_writer_arg(cmd
, &writer_num
);
1005 a
->writers
[nw
] = &writers
[writer_num
];
1006 a
->writer_conf
[nw
] = wconf
;
1007 PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats
[ret
],
1008 nw
, writer_names
[writer_num
]);
1016 static int init_receivers(void)
1018 int i
, ret
, receiver_num
;
1020 struct audio_format_info
*a
;
1022 for (i
= 0; receivers
[i
].name
; i
++) {
1023 PARA_INFO_LOG("initializing %s receiver\n", receivers
[i
].name
);
1024 receivers
[i
].init(&receivers
[i
]);
1026 for (i
= 0; i
< conf
.receiver_given
; i
++) {
1027 char *arg
= conf
.receiver_arg
[i
];
1028 char *recv
= strchr(arg
, ':');
1029 ret
= -E_MISSING_COLON
;
1034 ret
= get_audio_format_num(arg
);
1037 afi
[ret
].receiver_conf
= check_receiver_arg(recv
, &receiver_num
);
1038 if (!afi
[ret
].receiver_conf
) {
1039 ret
= -E_RECV_SYNTAX
;
1042 afi
[ret
].receiver
= &receivers
[receiver_num
];
1044 /* use the first available receiver with no arguments
1045 * for those audio formats for which no receiver
1048 cmd
= para_strdup(receivers
[0].name
);
1049 FOR_EACH_AUDIO_FORMAT(i
) {
1051 if (a
->receiver_conf
)
1053 a
->receiver_conf
= check_receiver_arg(cmd
, &receiver_num
);
1054 if (!a
->receiver_conf
)
1055 return -E_RECV_SYNTAX
;
1056 a
->receiver
= &receivers
[receiver_num
];
1064 static int init_default_filters(void)
1068 FOR_EACH_AUDIO_FORMAT(i
) {
1069 struct audio_format_info
*a
= &afi
[i
];
1074 continue; /* no default -- nothing to to */
1075 /* add "dec" to audio format name */
1076 tmp
= make_message("%sdec", audio_formats
[i
]);
1077 for (j
= 0; filters
[j
].name
; j
++)
1078 if (!strcmp(tmp
, filters
[j
].name
))
1081 ret
= -E_UNSUPPORTED_FILTER
;
1082 if (!filters
[j
].name
)
1084 tmp
= para_strdup(filters
[j
].name
);
1085 ret
= add_filter(i
, tmp
);
1089 PARA_INFO_LOG("%s -> default filter: %s\n", audio_formats
[i
],
1096 static int init_filters(void)
1100 filter_init(filters
);
1101 nf
= PARA_MAX(1, conf
.filter_given
);
1102 PARA_INFO_LOG("maximal number of filters: %d\n", nf
);
1103 FOR_EACH_AUDIO_FORMAT(i
) {
1104 afi
[i
].filter_conf
= para_malloc(nf
* sizeof(void *));
1105 afi
[i
].filters
= para_malloc(nf
* sizeof(struct filter
*));
1107 if (!conf
.no_default_filters_given
)
1108 return init_default_filters();
1109 for (i
= 0; i
< conf
.filter_given
; i
++) {
1110 char *arg
= conf
.filter_arg
[i
];
1111 char *filter_name
= strchr(arg
, ':');
1112 ret
= -E_MISSING_COLON
;
1115 *filter_name
= '\0';
1117 ret
= get_audio_format_num(arg
);
1120 ret
= add_filter(ret
, filter_name
);
1124 ret
= init_default_filters(); /* use default values for the rest */
1129 static int init_stream_io(void)
1133 ret
= init_writers();
1136 ret
= init_receivers();
1139 ret
= init_filters();
1145 static int dump_commands(int fd
)
1147 char *buf
= para_strdup(""), *tmp
= NULL
;
1151 FOR_EACH_COMMAND(i
) {
1152 tmp
= make_message("%s%s\t%s\n", buf
, cmds
[i
].name
,
1153 cmds
[i
].description
);
1157 ret
= client_write(fd
, buf
);
1163 * command handlers don't close their fd on errors (ret < 0) so that
1164 * its caller can send an error message. Otherwise (ret >= 0) it's up
1165 * to each individual command to close the fd if necessary.
1168 static int com_help(int fd
, int argc
, char **argv
)
1172 const char *dflt
= "No such command. Available commands:\n";
1175 ret
= dump_commands(fd
);
1178 FOR_EACH_COMMAND(i
) {
1179 if (strcmp(cmds
[i
].name
, argv
[1]))
1182 "NAME\n\t%s -- %s\n"
1183 "SYNOPSIS\n\tpara_audioc %s\n"
1184 "DESCRIPTION\n%s\n",
1186 cmds
[i
].description
,
1190 ret
= client_write(fd
, buf
);
1194 ret
= client_write(fd
, dflt
);
1196 ret
= dump_commands(fd
);
1203 static int com_stat(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
1207 long unsigned mask
= ~0LU;
1211 for (i
= 1; i
< argc
; i
++) {
1212 ret
= stat_item_valid(argv
[i
]);
1218 PARA_INFO_LOG("mask: 0x%lx\n", mask
);
1219 if (mask
& (1 << SI_PLAY_TIME
)) {
1220 struct timeval
*t
= wstime();
1221 char *ts
= get_time_string(t
);
1223 ret
= client_write(fd
, ts
);
1229 if (mask
& (1 << SI_AUDIOD_UPTIME
)) {
1230 char *tmp
, *us
= uptime_str();
1231 tmp
= make_message("%s:%s\n",
1232 status_item_list
[SI_AUDIOD_UPTIME
], us
);
1234 ret
= client_write(fd
, tmp
);
1239 if (mask
& (1 << SI_AUDIOD_STATUS
)) {
1240 char *s
= audiod_status_string();
1241 ret
= client_write(fd
, s
);
1246 if (mask
& (1 << SI_DECODER_FLAGS
)) {
1247 char *df
=decoder_flags();
1248 ret
= client_write(fd
, df
);
1254 for (i
= 0; i
< NUM_STAT_ITEMS
; i
++) {
1256 if (!((1 << i
) & mask
))
1258 v
= stat_item_values
[i
];
1259 tmp
= make_message("%s%s%s", buf
? buf
: "",
1260 v
? v
: "", v
? "\n" : "");
1264 ret
= client_write(fd
, buf
);
1267 ret
= stat_client_add(fd
, mask
);
1272 static int com_grab(int fd
, char *cmdline
)
1274 struct grab_client
*gc
;
1275 struct filter_node
*fn
;
1279 gc
= grab_client_new(fd
, cmdline
, &err
);
1282 fn
= find_filter_node(gc
->conf
->slot_arg
, gc
->audio_format_num
, gc
->conf
->filter_num_arg
);
1284 activate_grab_client(gc
, fn
);
1287 if (err
!= -E_GC_HELP_GIVEN
&& err
!= -E_GC_VERSION_GIVEN
)
1289 if (err
== -E_GC_HELP_GIVEN
) {
1290 msg
= make_message("%s\n\n", grab_client_args_info_usage
);
1291 for (i
= 0; grab_client_args_info_help
[i
]; i
++) {
1292 char *tmp
= make_message("%s%s\n", msg
,
1293 grab_client_args_info_help
[i
]);
1298 msg
= make_message("%s %s\n",
1299 GRAB_CLIENT_CMDLINE_PARSER_PACKAGE
,
1300 GRAB_CLIENT_CMDLINE_PARSER_VERSION
);
1301 err
= client_write(fd
, msg
);
1309 static int __noreturn
com_term(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
1312 clean_exit(EXIT_SUCCESS
, "terminating on user request");
1315 static int com_on(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
1317 audiod_status
= AUDIOD_ON
;
1322 static int com_off(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
1324 audiod_status
= AUDIOD_OFF
;
1329 static int com_sb(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
1331 audiod_status
= AUDIOD_STANDBY
;
1336 static int com_cycle(int fd
, int argc
, char **argv
)
1338 switch (audiod_status
) {
1340 return com_sb(fd
, argc
, argv
);
1343 return com_on(fd
, argc
, argv
);
1345 case AUDIOD_STANDBY
:
1346 return com_off(fd
, argc
, argv
);
1353 static int check_perms(uid_t uid
)
1357 if (!conf
.user_allow_given
)
1359 for (i
= 0; i
< conf
.user_allow_given
; i
++)
1360 if (uid
== conf
.user_allow_arg
[i
])
1362 return -E_UCRED_PERM
;
1365 static int handle_connect(int accept_fd
)
1367 int i
, argc
, ret
, clifd
= -1;
1368 char *cmd
= NULL
, *p
, *buf
= para_calloc(MAXLINE
), **argv
= NULL
;
1369 struct sockaddr_un unix_addr
;
1371 ret
= para_accept(accept_fd
, &unix_addr
, sizeof(struct sockaddr_un
));
1375 ret
= recv_cred_buffer(clifd
, buf
, MAXLINE
- 1);
1378 PARA_INFO_LOG("connection from user %i, buf: %s\n", ret
, buf
);
1379 ret
= check_perms(ret
);
1382 ret
= -E_INVALID_AUDIOD_CMD
;
1383 cmd
= para_strdup(buf
);
1384 p
= strchr(cmd
, '\n');
1391 for (i
= 0; cmds
[i
].name
; i
++) {
1393 if (strcmp(cmds
[i
].name
, cmd
))
1395 if (cmds
[i
].handler
) {
1396 argc
= split_args(buf
, &argv
, "\n");
1397 PARA_INFO_LOG("argv[0]: %s, argc= %d\n", argv
[0], argc
);
1398 ret
= cmds
[i
].handler(clifd
, argc
, argv
);
1401 for (j
= 0; p
[j
]; j
++)
1404 PARA_INFO_LOG("cmd: %s, options: %s\n", cmd
, p
);
1405 ret
= cmds
[i
].line_handler(clifd
, p
);
1408 ret
= -E_INVALID_AUDIOD_CMD
; /* cmd not found */
1413 if (clifd
> 0 && ret
< 0 && ret
!= -E_CLIENT_WRITE
) {
1414 char *tmp
= make_message("%s\n", PARA_STRERROR(-ret
));
1415 client_write(clifd
, tmp
);
1422 static int audiod_get_socket(void)
1424 struct sockaddr_un unix_addr
;
1427 if (conf
.socket_given
)
1428 socket_name
= para_strdup(conf
.socket_arg
);
1430 char *hn
= para_hostname();
1431 socket_name
= make_message("/var/paraslash/audiod_socket.%s",
1435 PARA_NOTICE_LOG("local socket: %s\n", socket_name
);
1436 if (conf
.force_given
)
1437 unlink(socket_name
);
1438 fd
= create_pf_socket(socket_name
, &unix_addr
,
1439 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IWOTH
);
1441 PARA_EMERG_LOG("%s", "can not connect to socket\n");
1442 exit(EXIT_FAILURE
); /* do not unlink socket */
1444 if (listen(fd
, 5) < 0) {
1445 PARA_EMERG_LOG("%s", "can not listen on socket\n");
1446 exit(EXIT_FAILURE
); /* do not unlink socket */
1448 add_close_on_fork_list(fd
);
1452 static int open_stat_pipe(void)
1454 int ret
, fd
[3] = {-1, 1, 0};
1456 ret
= para_exec_cmdline_pid(&pid
, BINDIR
"/para_client stat", fd
);
1459 PARA_NOTICE_LOG("stat pipe opened, fd %d\n", ret
);
1460 add_close_on_fork_list(ret
);
1462 clean_exit(EXIT_FAILURE
, "failed to open status pipe");
1466 void signal_event_handler(struct task
*t
)
1468 struct signal_task
*st
= t
->private_data
;
1469 handle_signal(st
->signum
);
1472 void signal_pre_select(struct sched
*s
, struct task
*t
)
1474 struct signal_task
*st
= t
->private_data
;
1476 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
1479 void signal_post_select(struct sched
*s
, struct task
*t
)
1481 struct signal_task
*st
= t
->private_data
;
1483 if (!FD_ISSET(st
->fd
, &s
->rfds
))
1485 t
->ret
= -E_SIGNAL_CAUGHT
;
1486 st
->signum
= para_next_signal();
1489 void signal_setup_default(struct signal_task
*st
)
1491 st
->task
.pre_select
= signal_pre_select
;
1492 st
->task
.post_select
= signal_post_select
;
1493 st
->task
.private_data
= st
;
1495 sprintf(st
->task
.status
, "signal task");
1498 static void command_pre_select(struct sched
*s
, struct task
*t
)
1500 struct command_task
*ct
= t
->private_data
;
1502 para_fd_set(ct
->fd
, &s
->rfds
, &s
->max_fileno
);
1506 static void command_post_select(struct sched
*s
, struct task
*t
)
1509 struct command_task
*ct
= t
->private_data
;
1511 t
->ret
= 1; /* always successful */
1512 if (audiod_status
!= AUDIOD_OFF
)
1513 audiod_status_dump();
1514 if (!FD_ISSET(ct
->fd
, &s
->rfds
))
1516 ret
= handle_connect(ct
->fd
);
1518 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));
1521 static void init_command_task(struct command_task
*ct
)
1523 ct
->task
.pre_select
= command_pre_select
;
1524 ct
->task
.post_select
= command_post_select
;
1525 ct
->task
.event_handler
= NULL
;
1526 ct
->task
.private_data
= ct
;
1528 ct
->fd
= audiod_get_socket(); /* doesn't return on errors */
1529 sprintf(ct
->task
.status
, "command task");
1532 static void status_pre_select(struct sched
*s
, struct task
*t
)
1534 struct status_task
*st
= t
->private_data
;
1536 if (st
->fd
>= 0 && audiod_status
== AUDIOD_OFF
)
1538 if (st
->fd
< 0 && audiod_status
!= AUDIOD_OFF
) {
1539 st
->fd
= open_stat_pipe();
1543 if (st
->fd
>= 0 && audiod_status
!= AUDIOD_OFF
)
1544 para_fd_set(st
->fd
, &s
->rfds
, &s
->max_fileno
);
1547 static void status_post_select(struct sched
*s
, struct task
*t
)
1549 struct status_task
*st
= t
->private_data
;
1553 if (st
->fd
< 0 || !FD_ISSET(st
->fd
, &s
->rfds
))
1555 ret
= read(st
->fd
, st
->buf
+ st
->loaded
,
1556 STRINGSIZE
- 1 - st
->loaded
);
1559 /* avoid busy loop if server is down */
1560 while (sleep(1) > 0) /* FIXME */
1563 st
->buf
[ret
+ st
->loaded
] = '\0';
1564 st
->loaded
= for_each_line(st
->buf
, ret
+ st
->loaded
,
1569 static void init_status_task(struct status_task
*st
)
1571 st
->task
.pre_select
= status_pre_select
;
1572 st
->task
.post_select
= status_post_select
;
1573 st
->task
.private_data
= st
;
1578 sprintf(st
->task
.status
, "status task");
1581 static void set_initial_status(void)
1583 audiod_status
= AUDIOD_ON
;
1584 if (!conf
.mode_given
)
1586 if (!strcmp(conf
.mode_arg
, "sb")) {
1587 audiod_status
= AUDIOD_STANDBY
;
1590 if (!strcmp(conf
.mode_arg
, "off")) {
1591 audiod_status
= AUDIOD_OFF
;
1594 if (strcmp(conf
.mode_arg
, "on"))
1595 PARA_WARNING_LOG("%s", "invalid mode\n");
1598 int main(int argc
, char *argv
[])
1603 struct command_task command_task_struct
, *cmd_task
= &command_task_struct
;
1604 struct task audiod_task_struct
, *audiod_task
= &audiod_task_struct
;
1609 hostname
= para_hostname();
1610 cmdline_parser(argc
, argv
, &conf
);
1611 para_drop_privileges(conf
.user_arg
, conf
.group_arg
);
1612 cf
= configfile_exists();
1614 if (cmdline_parser_configfile(cf
, &conf
, 0, 0, 0)) {
1615 PARA_EMERG_LOG("%s", "parse error in config file\n");
1619 if (conf
.logfile_given
)
1620 logfile
= open_log(conf
.logfile_arg
);
1621 log_welcome("para_audiod", conf
.loglevel_arg
);
1622 i
= init_stream_io();
1624 PARA_EMERG_LOG("init stream io error: %s\n", PARA_STRERROR(-i
));
1627 server_uptime(UPTIME_SET
);
1628 set_initial_status();
1632 setup_signal_handling();
1633 signal_setup_default(sig_task
);
1634 sig_task
->task
.event_handler
= signal_event_handler
;
1636 init_status_task(stat_task
);
1637 init_command_task(cmd_task
);
1638 init_audiod_task(audiod_task
);
1640 if (conf
.daemon_given
)
1643 register_task(&sig_task
->task
);
1644 register_task(&cmd_task
->task
);
1645 register_task(&stat_task
->task
);
1646 register_task(audiod_task
);
1647 s
.default_timeout
.tv_sec
= 0;
1648 s
.default_timeout
.tv_usec
= 99 * 1000;
1651 PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret
));
1652 return EXIT_FAILURE
;