2 * Copyright (C) 2012-2013 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file play.c Paraslash's standalone player. */
15 #include "play.cmdline.h"
16 #include "filter.cmdline.h"
19 #include "buffer_tree.h"
27 #include "write_common.h"
31 * Besides playback tasks which correspond to the receiver/filter/writer nodes,
32 * para_play creates two further tasks: The play task and the i9e task. It is
33 * important whether a function can be called in the context of para_play or
34 * i9e or both. As a rule, all command handlers are called only in i9e context via
35 * the line handler (input mode) or the key handler (command mode) below.
37 * Playlist handling is done exclusively in play context.
41 * Describes a request to change the state of para_play.
43 * There is only one variable of this type: \a rq of the global play task
44 * structure. Command handlers only set this variable and the post_select()
45 * function of the play task investigates its value during each iteration of
46 * the scheduler run and performs the actual work.
48 enum state_change_request_type
{
49 /** Everybody is happy. */
51 /** Stream must be repositioned (com_jmp(), com_ff()). */
53 /** New file should be loaded (com_next()). */
55 /** Someone wants us for dead (com_quit()). */
61 /* A bit array of invalid files (those will be skipped). */
63 /* The file which is currently open. */
64 unsigned current_file
;
65 /* When to update the status again. */
66 struct timeval next_update
;
68 /* Root of the buffer tree for command and status output. */
69 struct btr_node
*btrn
;
71 /* The decoding machinery. */
72 struct receiver_node rn
;
73 struct filter_node fn
;
74 struct writer_node wn
;
76 /* See comment to enum state_change_request_type above */
77 enum state_change_request_type rq
;
78 /* only relevant if rq == CRT_FILE_CHANGE */
81 bg: read lines at prompt, fg: display status and wait
86 /* We have the *intention* to play. Set by com_play(). */
89 /* as returned by afh_recv->open() */
92 /* retrieved via the btr exec mechanism */
93 long unsigned start_chunk
;
94 long unsigned seconds
;
95 long unsigned num_chunks
;
99 /** Initialize the array of errors for para_play. */
102 /* Activate the afh receiver. */
103 extern void afh_recv_init(struct receiver
*r
);
105 /** Initialization code for a receiver struct. */
106 #define AFH_RECEIVER {.name = "afh", .init = afh_recv_init},
107 /** This expands to the array of all receivers. */
108 DEFINE_RECEIVER_ARRAY
;
110 static int loglevel
= LL_WARNING
;
112 /** The log function which writes log messages to stderr. */
113 INIT_STDERR_LOGGING(loglevel
);
115 char *stat_item_values
[NUM_STAT_ITEMS
] = {NULL
};
117 /** Iterate over all files in the playlist. */
118 #define FOR_EACH_PLAYLIST_FILE(i) for (i = 0; i < conf.inputs_num; i++)
119 static struct play_args_info conf
;
121 static struct sched sched
= {.max_fileno
= 0};
122 static struct play_task play_task
;
123 static struct receiver
*afh_recv
;
125 static void check_afh_receiver_or_die(void)
129 FOR_EACH_RECEIVER(i
) {
130 struct receiver
*r
= receivers
+ i
;
131 if (strcmp(r
->name
, "afh"))
136 PARA_EMERG_LOG("fatal: afh receiver not found\n");
140 /** Description to be included in the --detailed-help output. */
142 "para_play is a command line audio player.\n" \
144 "It operates either in command mode or in insert mode. In insert mode it\n" \
145 "presents a prompt and allows to enter para_play commands like stop, play, pause\n" \
146 "etc. In command mode, the current audio file is shown and the program reads\n" \
147 "single key strokes from stdin. Keys may be mapped to para_play commands.\n" \
148 "Whenever a mapped key is pressed, the associated command is executed.\n" \
150 __noreturn static void print_help_and_die(void)
152 int d
= conf
.detailed_help_given
;
153 const char **p
= d
? play_args_info_detailed_help
154 : play_args_info_help
;
156 // printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-"
157 // PLAY_CMDLINE_PARSER_VERSION);
159 printf_or_die("%s\n\n", play_args_info_usage
);
161 printf_or_die("%s\n", PP_DESC
);
163 printf_or_die("%s\n", *p
);
167 static void parse_config_or_die(int argc
, char *argv
[])
171 struct play_cmdline_parser_params params
= {
175 .check_ambiguity
= 0,
179 if (play_cmdline_parser_ext(argc
, argv
, &conf
, ¶ms
))
181 HANDLE_VERSION_FLAG("play", conf
);
182 if (conf
.help_given
|| conf
.detailed_help_given
)
183 print_help_and_die();
184 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
185 if (conf
.config_file_given
)
186 config_file
= para_strdup(conf
.config_file_arg
);
188 char *home
= para_homedir();
189 config_file
= make_message("%s/.paraslash/play.conf", home
);
192 ret
= file_exists(config_file
);
193 if (conf
.config_file_given
&& !ret
) {
194 PARA_EMERG_LOG("can not read config file %s\n", config_file
);
198 params
.initialize
= 0;
199 params
.check_required
= 1;
200 play_cmdline_parser_config_file(config_file
, &conf
, ¶ms
);
202 for (i
= 0; i
< conf
.key_map_given
; i
++) {
203 char *s
= strchr(conf
.key_map_arg
[i
] + 1, ':');
206 PARA_EMERG_LOG("invalid key map arg: %s\n", conf
.key_map_arg
[i
]);
216 static char get_playback_state(struct play_task
*pt
)
219 case CRT_NONE
: return pt
->playing
? 'P' : 'U';
220 case CRT_REPOS
: return 'R';
221 case CRT_FILE_CHANGE
: return 'F';
222 case CRT_TERM_RQ
: return 'X';
227 static long unsigned get_play_time(struct play_task
*pt
)
229 char state
= get_playback_state(pt
);
230 long unsigned result
;
232 if (state
!= 'P' && state
!= 'U')
234 if (pt
->num_chunks
== 0 || pt
->seconds
== 0)
236 /* where the stream started (in seconds) */
237 result
= pt
->start_chunk
* pt
->seconds
/ pt
->num_chunks
;
238 if (pt
->wn
.btrn
) { /* Add the uptime of the writer node */
239 struct timeval diff
= {.tv_sec
= 0}, wstime
;
240 btr_get_node_start(pt
->wn
.btrn
, &wstime
);
241 if (wstime
.tv_sec
> 0)
242 tv_diff(now
, &wstime
, &diff
);
243 result
+= diff
.tv_sec
;
245 result
= PARA_MIN(result
, pt
->seconds
);
246 result
= PARA_MAX(result
, 0UL);
250 static void wipe_receiver_node(struct play_task
*pt
)
252 PARA_NOTICE_LOG("cleaning up receiver node\n");
253 btr_remove_node(&pt
->rn
.btrn
);
254 afh_recv
->close(&pt
->rn
);
255 afh_recv
->free_config(pt
->rn
.conf
);
256 memset(&pt
->rn
, 0, sizeof(struct receiver_node
));
259 /* returns: 0 not eof, 1: eof, < 0: fatal error. */
260 static int get_playback_error(struct play_task
*pt
)
262 int err
= pt
->wn
.task
.error
;
266 if (pt
->fn
.task
.error
>= 0)
268 if (pt
->rn
.task
.error
>= 0)
270 if (err
== -E_BTR_EOF
|| err
== -E_RECV_EOF
|| err
== -E_EOF
271 || err
== -E_WRITE_COMMON_EOF
)
276 static int eof_cleanup(struct play_task
*pt
)
278 struct writer
*w
= writers
+ DEFAULT_WRITER
;
279 struct filter
*decoder
= filters
+ pt
->fn
.filter_num
;
282 ret
= get_playback_error(pt
);
285 PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
287 btr_remove_node(&pt
->wn
.btrn
);
288 w
->free_config(pt
->wn
.conf
);
289 memset(&pt
->wn
, 0, sizeof(struct writer_node
));
291 decoder
->close(&pt
->fn
);
292 btr_remove_node(&pt
->fn
.btrn
);
294 memset(&pt
->fn
, 0, sizeof(struct filter_node
));
296 btr_remove_node(&pt
->rn
.btrn
);
298 * On eof (ret > 0), we do not wipe the receiver node struct until a
299 * new file is loaded because we still need it for jumping around when
303 wipe_receiver_node(pt
);
307 static int shuffle_compare(__a_unused
const void *a
, __a_unused
const void *b
)
309 return para_random(100) - 50;
312 static void shuffle(char **base
, size_t num
)
314 srandom(now
->tv_sec
);
315 qsort(base
, num
, sizeof(char *), shuffle_compare
);
318 static struct btr_node
*new_recv_btrn(struct receiver_node
*rn
)
320 return btr_new_node(&(struct btr_node_description
)
321 EMBRACE(.name
= afh_recv
->name
, .context
= rn
,
322 .handler
= afh_recv
->execute
));
325 static int open_new_file(struct play_task
*pt
)
328 char *tmp
, *path
= conf
.inputs
[pt
->next_file
], *afh_recv_conf
[] =
329 {"play", "-f", path
, "-b", "0", NULL
};
331 PARA_NOTICE_LOG("next file: %s\n", path
);
332 wipe_receiver_node(pt
);
334 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
335 pt
->rn
.conf
= afh_recv
->parse_config(ARRAY_SIZE(afh_recv_conf
) - 1,
338 pt
->rn
.receiver
= afh_recv
;
339 ret
= afh_recv
->open(&pt
->rn
);
341 PARA_ERROR_LOG("could not open %s: %s\n", path
,
342 para_strerror(-ret
));
345 pt
->audio_format_num
= ret
;
347 ret
= btr_exec_up(pt
->rn
.btrn
, "afhi", &pt
->afhi_txt
);
349 pt
->afhi_txt
= make_message("[afhi command failed]\n");
350 ret
= btr_exec_up(pt
->rn
.btrn
, "seconds_total", &tmp
);
355 ret
= para_atoi32(tmp
, &x
);
356 pt
->seconds
= ret
< 0? 1 : x
;
360 ret
= btr_exec_up(pt
->rn
.btrn
, "chunks_total", &tmp
);
365 ret
= para_atoi32(tmp
, &x
);
366 pt
->num_chunks
= ret
< 0? 1 : x
;
370 pt
->rn
.task
.pre_select
= afh_recv
->pre_select
;
371 pt
->rn
.task
.post_select
= afh_recv
->post_select
;
372 sprintf(pt
->rn
.task
.status
, "%s receiver node", afh_recv
->name
);
375 wipe_receiver_node(pt
);
379 static int load_file(struct play_task
*pt
)
384 struct filter
*decoder
;
386 btr_remove_node(&pt
->rn
.btrn
);
387 if (!pt
->rn
.receiver
|| pt
->next_file
!= pt
->current_file
) {
388 ret
= open_new_file(pt
);
393 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
394 sprintf(buf
, "repos %lu", pt
->start_chunk
);
395 ret
= btr_exec_up(pt
->rn
.btrn
, buf
, &tmp
);
397 PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret
));
402 /* set up decoding filter */
403 af
= audio_format_name(pt
->audio_format_num
);
404 tmp
= make_message("%sdec", af
);
405 ret
= check_filter_arg(tmp
, &pt
->fn
.conf
);
409 pt
->fn
.filter_num
= ret
;
410 decoder
= filters
+ ret
;
411 pt
->fn
.task
.pre_select
= decoder
->pre_select
;
412 pt
->fn
.task
.post_select
= decoder
->post_select
;
413 sprintf(pt
->fn
.task
.status
, "%s decoder", af
);
414 pt
->fn
.btrn
= btr_new_node(&(struct btr_node_description
)
415 EMBRACE(.name
= decoder
->name
, .parent
= pt
->rn
.btrn
,
416 .handler
= decoder
->execute
, .context
= &pt
->fn
));
417 decoder
->open(&pt
->fn
);
419 /* setup default writer */
420 pt
->wn
.conf
= check_writer_arg_or_die(NULL
, &pt
->wn
.writer_num
);
421 pt
->wn
.task
.error
= 0;
423 /* success, register tasks */
424 register_task(&sched
, &pt
->rn
.task
);
425 register_task(&sched
, &pt
->fn
.task
);
426 register_writer_node(&pt
->wn
, pt
->fn
.btrn
, &sched
);
429 wipe_receiver_node(pt
);
433 static int next_valid_file(struct play_task
*pt
)
435 int i
, j
= pt
->current_file
;
437 FOR_EACH_PLAYLIST_FILE(i
) {
438 j
= (j
+ 1) % conf
.inputs_num
;
442 return -E_NO_VALID_FILES
;
445 static int load_next_file(struct play_task
*pt
)
450 if (pt
->rq
== CRT_NONE
|| pt
->rq
== CRT_FILE_CHANGE
) {
452 ret
= next_valid_file(pt
);
456 } else if (pt
->rq
== CRT_REPOS
)
457 pt
->next_file
= pt
->current_file
;
460 pt
->invalid
[pt
->next_file
] = true;
464 pt
->current_file
= pt
->next_file
;
469 static void kill_stream(struct play_task
*pt
)
471 task_notify(&pt
->wn
.task
, E_EOF
);
476 /* only called from com_prev(), nec. only if we have readline */
477 static int previous_valid_file(struct play_task
*pt
)
479 int i
, j
= pt
->current_file
;
481 FOR_EACH_PLAYLIST_FILE(i
) {
484 j
= conf
.inputs_num
- 1;
488 return -E_NO_VALID_FILES
;
491 #include "interactive.h"
494 * Define the default (internal) key mappings and helper functions to get the
495 * key sequence or the command from a key id, which is what we obtain from
496 * i9e/readline when the key is pressed.
498 * In some of these helper functions we could return pointers to the constant
499 * arrays defined below. However, for others we can not, so let's better be
500 * consistent and allocate all returned strings on the heap.
503 #define INTERNAL_KEYMAP_ENTRIES \
504 KEYMAP_ENTRY("^", "jmp 0"), \
505 KEYMAP_ENTRY("1", "jmp 10"), \
506 KEYMAP_ENTRY("2", "jmp 21"), \
507 KEYMAP_ENTRY("3", "jmp 32"), \
508 KEYMAP_ENTRY("4", "jmp 43"), \
509 KEYMAP_ENTRY("5", "jmp 54"), \
510 KEYMAP_ENTRY("6", "jmp 65"), \
511 KEYMAP_ENTRY("7", "jmp 76"), \
512 KEYMAP_ENTRY("8", "jmp 87"), \
513 KEYMAP_ENTRY("9", "jmp 98"), \
514 KEYMAP_ENTRY("+", "next"), \
515 KEYMAP_ENTRY("-", "prev"), \
516 KEYMAP_ENTRY(":", "bg"), \
517 KEYMAP_ENTRY("i", "info"), \
518 KEYMAP_ENTRY("l", "ls"), \
519 KEYMAP_ENTRY("s", "play"), \
520 KEYMAP_ENTRY("p", "pause"), \
521 KEYMAP_ENTRY("q", "quit"), \
522 KEYMAP_ENTRY("?", "help"), \
523 KEYMAP_ENTRY("\033[D", "ff -10"), \
524 KEYMAP_ENTRY("\033[C", "ff 10"), \
525 KEYMAP_ENTRY("\033[A", "ff 60"), \
526 KEYMAP_ENTRY("\033[B", "ff -60"), \
528 #define KEYMAP_ENTRY(a, b) a
529 static const char *default_keyseqs
[] = {INTERNAL_KEYMAP_ENTRIES
};
531 #define KEYMAP_ENTRY(a, b) b
532 static const char *default_commands
[] = {INTERNAL_KEYMAP_ENTRIES
};
534 #define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
535 #define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + conf.key_map_given)
536 #define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
538 static inline bool is_internal_key(int key
)
540 return key
< NUM_INTERNALLY_MAPPED_KEYS
;
543 /* for internal keys, the key id is just the array index. */
544 static inline int get_internal_key_map_idx(int key
)
546 assert(is_internal_key(key
));
551 * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
552 * difference is the index to the array of user defined key maps.
554 static inline int get_user_key_map_idx(int key
)
556 assert(!is_internal_key(key
));
557 return key
- NUM_INTERNALLY_MAPPED_KEYS
;
560 static inline int get_key_map_idx(int key
)
562 return is_internal_key(key
)?
563 get_internal_key_map_idx(key
) : get_user_key_map_idx(key
);
566 static inline char *get_user_key_map_arg(int key
)
568 return conf
.key_map_arg
[get_user_key_map_idx(key
)];
571 static inline char *get_internal_key_map_seq(int key
)
573 return para_strdup(default_keyseqs
[get_internal_key_map_idx(key
)]);
576 static char *get_user_key_map_seq(int key
)
578 const char *kma
= get_user_key_map_arg(key
);
579 const char *p
= strchr(kma
+ 1, ':');
586 result
= para_malloc(len
+ 1);
587 memcpy(result
, kma
, len
);
592 static char *get_key_map_seq(int key
)
594 return is_internal_key(key
)?
595 get_internal_key_map_seq(key
) : get_user_key_map_seq(key
);
598 static inline char *get_internal_key_map_cmd(int key
)
600 return para_strdup(default_commands
[get_internal_key_map_idx(key
)]);
603 static char *get_user_key_map_cmd(int key
)
605 const char *kma
= get_user_key_map_arg(key
);
606 const char *p
= strchr(kma
+ 1, ':');
610 return para_strdup(p
+ 1);
613 static char *get_key_map_cmd(int key
)
615 return is_internal_key(key
)?
616 get_internal_key_map_cmd(key
) : get_user_key_map_cmd(key
);
619 static char **get_mapped_keyseqs(void)
624 result
= para_malloc((NUM_MAPPED_KEYS
+ 1) * sizeof(char *));
625 FOR_EACH_MAPPED_KEY(i
) {
626 int idx
= get_key_map_idx(i
);
627 char *seq
= get_key_map_seq(i
);
628 char *cmd
= get_key_map_cmd(i
);
629 bool internal
= is_internal_key(i
);
630 PARA_DEBUG_LOG("%s key sequence #%d: %s -> %s\n",
631 internal
? "internal" : "user-defined",
640 #include "play_completion.h"
643 /* defines one command of para_play */
646 int (*handler
)(struct play_task
*, int, char**);
647 const char *description
;
652 #include "play_command_list.h"
653 static struct pp_command pp_cmds
[] = {DEFINE_PLAY_CMD_ARRAY
};
654 #define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
656 #include "play_completion.h"
657 static struct i9e_completer pp_completers
[];
659 I9E_DUMMY_COMPLETER(jmp
);
660 I9E_DUMMY_COMPLETER(next
);
661 I9E_DUMMY_COMPLETER(prev
);
662 I9E_DUMMY_COMPLETER(fg
);
663 I9E_DUMMY_COMPLETER(bg
);
664 I9E_DUMMY_COMPLETER(ls
);
665 I9E_DUMMY_COMPLETER(info
);
666 I9E_DUMMY_COMPLETER(play
);
667 I9E_DUMMY_COMPLETER(pause
);
668 I9E_DUMMY_COMPLETER(stop
);
669 I9E_DUMMY_COMPLETER(tasks
);
670 I9E_DUMMY_COMPLETER(quit
);
671 I9E_DUMMY_COMPLETER(ff
);
673 static void help_completer(struct i9e_completion_info
*ci
,
674 struct i9e_completion_result
*result
)
676 result
->matches
= i9e_complete_commands(ci
->word
, pp_completers
);
679 static struct i9e_completer pp_completers
[] = {PLAY_COMPLETERS
{.name
= NULL
}};
681 static void attach_stdout(struct play_task
*pt
, const char *name
)
685 pt
->btrn
= btr_new_node(&(struct btr_node_description
)
686 EMBRACE(.name
= name
));
687 i9e_attach_to_stdout(pt
->btrn
);
690 static void detach_stdout(struct play_task
*pt
)
692 btr_remove_node(&pt
->btrn
);
695 static int com_quit(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
698 return -E_PLAY_SYNTAX
;
699 pt
->rq
= CRT_TERM_RQ
;
703 static int com_help(struct play_task
*pt
, int argc
, char **argv
)
710 return -E_PLAY_SYNTAX
;
713 FOR_EACH_COMMAND(i
) {
714 sz
= xasprintf(&buf
, "%s\t%s\n", pp_cmds
[i
].name
,
715 pp_cmds
[i
].description
);
716 btr_add_output(buf
, sz
, pt
->btrn
);
719 FOR_EACH_MAPPED_KEY(i
) {
720 bool internal
= is_internal_key(i
);
721 int idx
= get_key_map_idx(i
);
722 char *seq
= get_key_map_seq(i
);
723 char *cmd
= get_key_map_cmd(i
);
725 "%s key #%d: %s -> %s\n",
726 internal
? "internal" : "user-defined",
728 btr_add_output(buf
, sz
, pt
->btrn
);
735 FOR_EACH_COMMAND(i
) {
736 if (strcmp(pp_cmds
[i
].name
, argv
[1]))
743 pp_cmds
[i
].description
,
747 btr_add_output(buf
, sz
, pt
->btrn
);
750 return -E_BAD_PLAY_CMD
;
753 static int com_info(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
757 static char dflt
[] = "[no information available]";
760 return -E_PLAY_SYNTAX
;
761 sz
= xasprintf(&buf
, "playlist_pos: %u\npath: %s\n",
762 pt
->current_file
, conf
.inputs
[pt
->current_file
]);
763 btr_add_output(buf
, sz
, pt
->btrn
);
764 buf
= pt
->afhi_txt
? pt
->afhi_txt
: dflt
;
765 btr_add_output_dont_free(buf
, strlen(buf
), pt
->btrn
);
769 static void list_file(struct play_task
*pt
, int num
)
774 sz
= xasprintf(&buf
, "%s %4u %s\n", num
== pt
->current_file
?
775 "*" : " ", num
, conf
.inputs
[num
]);
776 btr_add_output(buf
, sz
, pt
->btrn
);
779 static int com_tasks(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
786 return -E_PLAY_SYNTAX
;
788 buf
= get_task_list(&sched
);
789 btr_add_output(buf
, strlen(buf
), pt
->btrn
);
790 state
= get_playback_state(pt
);
791 sz
= xasprintf(&buf
, "state: %c\n", state
);
792 btr_add_output(buf
, sz
, pt
->btrn
);
796 static int com_ls(struct play_task
*pt
, int argc
, char **argv
)
801 FOR_EACH_PLAYLIST_FILE(i
)
805 for (j
= 1; j
< argc
; j
++) {
806 FOR_EACH_PLAYLIST_FILE(i
) {
807 ret
= fnmatch(argv
[j
], conf
.inputs
[i
], 0);
808 if (ret
== 0) /* match */
815 static int com_play(struct play_task
*pt
, int argc
, char **argv
)
822 return -E_PLAY_SYNTAX
;
823 state
= get_playback_state(pt
);
827 pt
->next_file
= pt
->current_file
;
832 ret
= para_atoi32(argv
[1], &x
);
835 if (x
< 0 || x
>= conf
.inputs_num
)
836 return -ERRNO_TO_PARA_ERROR(EINVAL
);
839 pt
->rq
= CRT_FILE_CHANGE
;
843 static int com_pause(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
846 long unsigned seconds
, ss
;
849 return -E_PLAY_SYNTAX
;
850 state
= get_playback_state(pt
);
854 seconds
= get_play_time(pt
);
858 ss
= seconds
* pt
->num_chunks
/ pt
->seconds
+ 1;
859 ss
= PARA_MAX(ss
, 0UL);
860 ss
= PARA_MIN(ss
, pt
->num_chunks
);
861 pt
->start_chunk
= ss
;
866 static int com_prev(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
872 return -E_PLAY_SYNTAX
;
873 ret
= previous_valid_file(pt
);
878 pt
->rq
= CRT_FILE_CHANGE
;
882 static int com_next(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
887 return -E_PLAY_SYNTAX
;
888 ret
= next_valid_file(pt
);
893 pt
->rq
= CRT_FILE_CHANGE
;
897 static int com_fg(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
900 return -E_PLAY_SYNTAX
;
901 pt
->background
= false;
905 static int com_bg(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
908 return -E_PLAY_SYNTAX
;
909 pt
->background
= true;
913 static int com_jmp(struct play_task
*pt
, int argc
, char **argv
)
919 return -E_PLAY_SYNTAX
;
920 ret
= para_atoi32(argv
[1], &percent
);
923 if (percent
< 0 || percent
> 100)
924 return -ERRNO_TO_PARA_ERROR(EINVAL
);
925 if (pt
->playing
&& !pt
->fn
.btrn
)
927 pt
->start_chunk
= percent
* pt
->num_chunks
/ 100;
935 static int com_ff(struct play_task
*pt
, int argc
, char **argv
)
941 return -E_PLAY_SYNTAX
;
942 ret
= para_atoi32(argv
[1], &seconds
);
945 if (pt
->playing
&& !pt
->fn
.btrn
)
947 seconds
+= get_play_time(pt
);
948 seconds
= PARA_MIN(seconds
, (typeof(seconds
))pt
->seconds
- 4);
949 seconds
= PARA_MAX(seconds
, 0);
950 pt
->start_chunk
= pt
->num_chunks
* seconds
/ pt
->seconds
;
951 pt
->start_chunk
= PARA_MIN(pt
->start_chunk
, pt
->num_chunks
- 1);
952 pt
->start_chunk
= PARA_MAX(pt
->start_chunk
, 0UL);
960 static int run_command(char *line
, struct play_task
*pt
)
965 attach_stdout(pt
, __FUNCTION__
);
966 ret
= create_argv(line
, " ", &argv
);
968 PARA_ERROR_LOG("parse error: %s\n", para_strerror(-ret
));
974 FOR_EACH_COMMAND(i
) {
975 if (strcmp(pp_cmds
[i
].name
, argv
[0]))
977 ret
= pp_cmds
[i
].handler(pt
, argc
, argv
);
979 PARA_WARNING_LOG("%s: %s\n", pt
->background
?
980 "" : argv
[0], para_strerror(-ret
));
984 PARA_WARNING_LOG("invalid command: %s\n", argv
[0]);
991 static int play_i9e_line_handler(char *line
)
993 struct play_task
*pt
= &play_task
;
996 if (line
== NULL
|| !*line
)
998 ret
= run_command(line
, pt
);
1004 static int play_i9e_key_handler(int key
)
1006 struct play_task
*pt
= &play_task
;
1007 int idx
= get_key_map_idx(key
);
1008 char *seq
= get_key_map_seq(key
);
1009 char *cmd
= get_key_map_cmd(key
);
1010 bool internal
= is_internal_key(key
);
1012 PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
1013 key
, internal
? "internal" : "user-defined",
1015 run_command(cmd
, pt
);
1018 pt
->next_update
= *now
;
1022 static struct i9e_client_info ici
= {
1024 .prompt
= "para_play> ",
1025 .line_handler
= play_i9e_line_handler
,
1026 .key_handler
= play_i9e_key_handler
,
1027 .completers
= pp_completers
,
1030 static void sigint_handler(int sig
)
1032 play_task
.background
= true;
1033 i9e_signal_dispatch(sig
);
1037 * We start with para_log() set to the standard log function which writes to
1038 * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
1041 static void session_open(__a_unused
struct play_task
*pt
)
1045 struct sigaction act
;
1047 PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("play"));
1048 if (conf
.history_file_given
)
1049 history_file
= para_strdup(conf
.history_file_arg
);
1051 char *home
= para_homedir();
1052 history_file
= make_message("%s/.paraslash/play.history",
1056 ici
.history_file
= history_file
;
1057 ici
.loglevel
= loglevel
;
1059 act
.sa_handler
= sigint_handler
;
1060 sigemptyset(&act
.sa_mask
);
1062 sigaction(SIGINT
, &act
, NULL
);
1063 act
.sa_handler
= i9e_signal_dispatch
;
1064 sigemptyset(&act
.sa_mask
);
1066 sigaction(SIGWINCH
, &act
, NULL
);
1067 sched
.select_function
= i9e_select
;
1069 ici
.bound_keyseqs
= get_mapped_keyseqs();
1070 pt
->btrn
= ici
.producer
= btr_new_node(&(struct btr_node_description
)
1071 EMBRACE(.name
= __FUNCTION__
));
1072 ret
= i9e_open(&ici
, &sched
);
1081 PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret
));
1085 static void session_update_time_string(struct play_task
*pt
, char *str
, unsigned len
)
1090 if (btr_get_output_queue_size(pt
->btrn
) > 0)
1092 if (btr_get_input_queue_size(pt
->btrn
) > 0)
1095 ie9_print_status_bar(str
, len
);
1099 * If we are about to die we must call i9e_close() to reset the terminal.
1100 * However, i9e_close() must be called in *this* context, i.e. from
1101 * play_task.post_select() rather than from i9e_post_select(), because
1102 * otherwise i9e would access freed memory upon return. So the play task must
1103 * stay alive until the i9e task terminates.
1105 * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
1106 * and reschedule. In the next iteration, i9e->post_select returns an error and
1107 * terminates. Subsequent calls to i9e_get_error() then return negative and we
1108 * are allowed to call i9e_close() and terminate as well.
1110 static int session_post_select(__a_unused
struct sched
*s
, struct task
*t
)
1112 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1118 attach_stdout(pt
, __FUNCTION__
);
1119 ret
= i9e_get_error();
1123 para_log
= stderr_log
;
1124 free(ici
.history_file
);
1127 if (get_playback_state(pt
) == 'X')
1128 i9e_signal_dispatch(SIGTERM
);
1132 #else /* HAVE_READLINE */
1134 static int session_post_select(struct sched
*s
, struct task
*t
)
1136 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1139 if (!FD_ISSET(STDIN_FILENO
, &s
->rfds
))
1141 if (read(STDIN_FILENO
, &c
, 1))
1147 static void session_open(__a_unused
struct play_task
*pt
)
1151 static void session_update_time_string(__a_unused
struct play_task
*pt
,
1152 char *str
, __a_unused
unsigned len
)
1154 printf("\r%s ", str
);
1157 #endif /* HAVE_READLINE */
1159 static void play_pre_select(struct sched
*s
, struct task
*t
)
1161 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1164 para_fd_set(STDIN_FILENO
, &s
->rfds
, &s
->max_fileno
);
1165 state
= get_playback_state(pt
);
1166 if (state
== 'R' || state
== 'F' || state
== 'X')
1167 return sched_min_delay(s
);
1168 sched_request_barrier_or_min_delay(&pt
->next_update
, s
);
1171 static unsigned get_time_string(struct play_task
*pt
, char **result
)
1173 int seconds
, length
;
1174 char state
= get_playback_state(pt
);
1176 /* do not return anything if things are about to change */
1177 if (state
!= 'P' && state
!= 'U') {
1181 length
= pt
->seconds
;
1183 return xasprintf(result
, "0:00 [0:00] (0%%/0:00)");
1184 seconds
= get_play_time(pt
);
1185 return xasprintf(result
, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
1189 (length
- seconds
) / 60,
1190 (length
- seconds
) % 60,
1191 length
? (seconds
* 100 + length
/ 2) / length
: 0,
1194 conf
.inputs
[pt
->current_file
]
1198 static void play_post_select(struct sched
*s
, struct task
*t
)
1200 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1203 ret
= eof_cleanup(pt
);
1205 pt
->rq
= CRT_TERM_RQ
;
1208 ret
= session_post_select(s
, t
);
1211 if (!pt
->wn
.btrn
&& !pt
->fn
.btrn
) {
1212 char state
= get_playback_state(pt
);
1213 if (state
== 'P' || state
== 'R' || state
== 'F') {
1214 PARA_NOTICE_LOG("state: %c\n", state
);
1215 ret
= load_next_file(pt
);
1217 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1218 pt
->rq
= CRT_TERM_RQ
;
1222 pt
->next_update
= *now
;
1225 if (tv_diff(now
, &pt
->next_update
, NULL
) >= 0) {
1227 unsigned len
= get_time_string(pt
, &str
);
1228 struct timeval delay
= {.tv_sec
= 0, .tv_usec
= 100 * 1000};
1230 session_update_time_string(pt
, str
, len
);
1232 tv_add(now
, &delay
, &pt
->next_update
);
1240 * The main function of para_play.
1242 * \param argc Standard.
1243 * \param argv Standard.
1245 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
1247 int main(int argc
, char *argv
[])
1250 struct play_task
*pt
= &play_task
;
1252 /* needed this early to make help work */
1257 clock_get_realtime(now
);
1258 sched
.default_timeout
.tv_sec
= 5;
1260 parse_config_or_die(argc
, argv
);
1261 if (conf
.inputs_num
== 0)
1262 print_help_and_die();
1263 check_afh_receiver_or_die();
1266 if (conf
.randomize_given
)
1267 shuffle(conf
.inputs
, conf
.inputs_num
);
1268 pt
->invalid
= para_calloc(sizeof(*pt
->invalid
) * conf
.inputs_num
);
1269 pt
->rq
= CRT_FILE_CHANGE
;
1270 pt
->current_file
= conf
.inputs_num
- 1;
1272 pt
->task
.pre_select
= play_pre_select
;
1273 pt
->task
.post_select
= play_post_select
;
1274 sprintf(pt
->task
.status
, "play task");
1275 register_task(&sched
, &pt
->task
);
1276 ret
= schedule(&sched
);
1278 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1279 return ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
;