2 * Copyright (C) 2012 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file play.c Paraslash's standalone player. */
16 #include "play.cmdline.h"
17 #include "filter.cmdline.h"
20 #include "buffer_tree.h"
28 #include "write_common.h"
32 * Besides playback tasks which correspond to the receiver/filter/writer nodes,
33 * para_play creates two further tasks: The play task and the i9e task. It is
34 * important whether a function can be called in the context of para_play or
35 * i9e or both. As a rule, all command handlers are called only in i9e context via
36 * the line handler (input mode) or the key handler (command mode) below.
38 * Playlist handling is done exclusively in play context.
42 * Describes a request to change the state of para_play.
44 * There is only one variable of this type: \a rq of the global play task
45 * structure. Command handlers only set this variable and the post_select()
46 * function of the play task investigates its value during each iteration of
47 * the scheduler run and performs the actual work.
49 enum state_change_request_type
{
50 /** Everybody is happy. */
52 /** Stream must be repositioned (com_jmp(), com_ff()). */
54 /** New file should be loaded (com_next()). */
56 /** Someone wants us for dead (com_quit()). */
62 /* A bit array of invalid files (those will be skipped). */
64 /* The file which is currently open. */
65 unsigned current_file
;
66 /* When to update the status again. */
67 struct timeval next_update
;
69 /* Root of the buffer tree for command and status output. */
70 struct btr_node
*btrn
;
72 /* The decoding machinery. */
73 struct receiver_node rn
;
74 struct filter_node fn
;
75 struct writer_node wn
;
77 /* See comment to enum state_change_request_type above */
78 enum state_change_request_type rq
;
79 /* only relevant if rq == CRT_FILE_CHANGE */
82 bg: read lines at prompt, fg: display status and wait
87 /* We have the *intention* to play. Set by com_play(). */
90 /* as returned by afh_recv->open() */
93 /* retrieved via the btr exec mechanism */
94 long unsigned start_chunk
;
95 long unsigned seconds
;
96 long unsigned num_chunks
;
100 /** Initialize the array of errors for para_play. */
103 /* Activate the afh receiver. */
104 extern void afh_recv_init(struct receiver
*r
);
106 /** Initialization code for a receiver struct. */
107 #define AFH_RECEIVER {.name = "afh", .init = afh_recv_init},
108 /** This expands to the array of all receivers. */
109 DEFINE_RECEIVER_ARRAY
;
111 static int loglevel
= LL_WARNING
;
113 /** The log function which writes log messages to stderr. */
114 INIT_STDERR_LOGGING(loglevel
);
116 char *stat_item_values
[NUM_STAT_ITEMS
] = {NULL
};
118 /** Iterate over all files in the playlist. */
119 #define FOR_EACH_PLAYLIST_FILE(i) for (i = 0; i < conf.inputs_num; i++)
120 static struct play_args_info conf
;
122 static struct sched sched
= {.max_fileno
= 0};
123 static struct play_task play_task
;
124 static struct receiver
*afh_recv
;
126 static void check_afh_receiver_or_die(void)
130 FOR_EACH_RECEIVER(i
) {
131 struct receiver
*r
= receivers
+ i
;
132 if (strcmp(r
->name
, "afh"))
137 PARA_EMERG_LOG("fatal: afh receiver not found\n");
141 /** Description to be included in the --detailed-help output. */
143 "para_play is a command line audio player.\n" \
145 "It operates either in command mode or in insert mode. In insert mode it\n" \
146 "presents a prompt and allows to enter para_play commands like stop, play, pause\n" \
147 "etc. In command mode, the current audio file is shown and the program reads\n" \
148 "single key strokes from stdin. Keys may be mapped to para_play commands.\n" \
149 "Whenever a mapped key is pressed, the associated command is executed.\n" \
151 __noreturn static void print_help_and_die(void)
153 int d
= conf
.detailed_help_given
;
154 const char **p
= d
? play_args_info_detailed_help
155 : play_args_info_help
;
157 // printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-"
158 // PLAY_CMDLINE_PARSER_VERSION);
160 printf_or_die("%s\n\n", play_args_info_usage
);
162 printf_or_die("%s\n", PP_DESC
);
164 printf_or_die("%s\n", *p
);
168 static void parse_config_or_die(int argc
, char *argv
[])
172 struct play_cmdline_parser_params params
= {
176 .check_ambiguity
= 0,
180 if (play_cmdline_parser_ext(argc
, argv
, &conf
, ¶ms
))
182 HANDLE_VERSION_FLAG("play", conf
);
183 if (conf
.help_given
|| conf
.detailed_help_given
)
184 print_help_and_die();
185 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
186 if (conf
.config_file_given
)
187 config_file
= para_strdup(conf
.config_file_arg
);
189 char *home
= para_homedir();
190 config_file
= make_message("%s/.paraslash/play.conf", home
);
193 ret
= file_exists(config_file
);
194 if (conf
.config_file_given
&& !ret
) {
195 PARA_EMERG_LOG("can not read config file %s\n", config_file
);
199 params
.initialize
= 0;
200 params
.check_required
= 1;
201 play_cmdline_parser_config_file(config_file
, &conf
, ¶ms
);
203 for (i
= 0; i
< conf
.key_map_given
; i
++) {
204 char *s
= strchr(conf
.key_map_arg
[i
] + 1, ':');
207 PARA_EMERG_LOG("invalid key map arg: %s\n", conf
.key_map_arg
[i
]);
217 static char get_playback_state(struct play_task
*pt
)
220 case CRT_NONE
: return pt
->playing
? 'P' : 'U';
221 case CRT_REPOS
: return 'R';
222 case CRT_FILE_CHANGE
: return 'F';
223 case CRT_TERM_RQ
: return 'X';
228 static long unsigned get_play_time(struct play_task
*pt
)
230 char state
= get_playback_state(pt
);
231 long unsigned result
;
233 if (state
!= 'P' && state
!= 'U')
235 if (pt
->num_chunks
== 0 || pt
->seconds
== 0)
237 /* where the stream started (in seconds) */
238 result
= pt
->start_chunk
* pt
->seconds
/ pt
->num_chunks
;
239 if (pt
->wn
.btrn
) { /* Add the uptime of the writer node */
240 struct timeval diff
= {.tv_sec
= 0}, wstime
;
241 btr_get_node_start(pt
->wn
.btrn
, &wstime
);
242 if (wstime
.tv_sec
> 0)
243 tv_diff(now
, &wstime
, &diff
);
244 result
+= diff
.tv_sec
;
246 result
= PARA_MIN(result
, pt
->seconds
);
247 result
= PARA_MAX(result
, 0UL);
251 static void wipe_receiver_node(struct play_task
*pt
)
253 PARA_NOTICE_LOG("cleaning up receiver node\n");
254 btr_remove_node(&pt
->rn
.btrn
);
255 afh_recv
->close(&pt
->rn
);
256 afh_recv
->free_config(pt
->rn
.conf
);
257 memset(&pt
->rn
, 0, sizeof(struct receiver_node
));
260 /* returns: 0 not eof, 1: eof, < 0: fatal error. */
261 static int get_playback_error(struct play_task
*pt
)
263 int err
= pt
->wn
.task
.error
;
267 if (pt
->fn
.task
.error
>= 0)
269 if (pt
->rn
.task
.error
>= 0)
271 if (err
== -E_BTR_EOF
|| err
== -E_RECV_EOF
|| err
== -E_EOF
272 || err
== -E_WRITE_COMMON_EOF
)
277 static int eof_cleanup(struct play_task
*pt
)
279 struct writer
*w
= writers
+ DEFAULT_WRITER
;
280 struct filter
*decoder
= filters
+ pt
->fn
.filter_num
;
283 ret
= get_playback_error(pt
);
286 PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
288 btr_remove_node(&pt
->wn
.btrn
);
289 w
->free_config(pt
->wn
.conf
);
290 memset(&pt
->wn
, 0, sizeof(struct writer_node
));
292 decoder
->close(&pt
->fn
);
293 btr_remove_node(&pt
->fn
.btrn
);
295 memset(&pt
->fn
, 0, sizeof(struct filter_node
));
297 btr_remove_node(&pt
->rn
.btrn
);
299 * On eof (ret > 0), we do not wipe the receiver node struct until a
300 * new file is loaded because we still need it for jumping around when
304 wipe_receiver_node(pt
);
308 static int shuffle_compare(__a_unused
const void *a
, __a_unused
const void *b
)
310 return para_random(100) - 50;
313 static void shuffle(char **base
, size_t num
)
315 srandom(now
->tv_sec
);
316 qsort(base
, num
, sizeof(char *), shuffle_compare
);
319 static struct btr_node
*new_recv_btrn(struct receiver_node
*rn
)
321 return btr_new_node(&(struct btr_node_description
)
322 EMBRACE(.name
= afh_recv
->name
, .context
= rn
,
323 .handler
= afh_recv
->execute
));
326 static int open_new_file(struct play_task
*pt
)
329 char *tmp
, *path
= conf
.inputs
[pt
->next_file
], *afh_recv_conf
[] =
330 {"play", "-f", path
, "-b", "0", NULL
};
332 PARA_NOTICE_LOG("next file: %s\n", path
);
333 wipe_receiver_node(pt
);
335 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
336 pt
->rn
.conf
= afh_recv
->parse_config(ARRAY_SIZE(afh_recv_conf
) - 1,
339 pt
->rn
.receiver
= afh_recv
;
340 ret
= afh_recv
->open(&pt
->rn
);
342 PARA_ERROR_LOG("could not open %s: %s\n", path
,
343 para_strerror(-ret
));
346 pt
->audio_format_num
= ret
;
348 ret
= btr_exec_up(pt
->rn
.btrn
, "afhi", &pt
->afhi_txt
);
350 pt
->afhi_txt
= make_message("[afhi command failed]\n");
351 ret
= btr_exec_up(pt
->rn
.btrn
, "seconds_total", &tmp
);
356 ret
= para_atoi32(tmp
, &x
);
357 pt
->seconds
= ret
< 0? 1 : x
;
361 ret
= btr_exec_up(pt
->rn
.btrn
, "chunks_total", &tmp
);
366 ret
= para_atoi32(tmp
, &x
);
367 pt
->num_chunks
= ret
< 0? 1 : x
;
371 pt
->rn
.task
.pre_select
= afh_recv
->pre_select
;
372 pt
->rn
.task
.post_select
= afh_recv
->post_select
;
373 sprintf(pt
->rn
.task
.status
, "%s receiver node", afh_recv
->name
);
376 wipe_receiver_node(pt
);
380 static int load_file(struct play_task
*pt
)
385 struct filter
*decoder
;
387 btr_remove_node(&pt
->rn
.btrn
);
388 if (!pt
->rn
.receiver
|| pt
->next_file
!= pt
->current_file
) {
389 ret
= open_new_file(pt
);
394 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
395 sprintf(buf
, "repos %lu", pt
->start_chunk
);
396 ret
= btr_exec_up(pt
->rn
.btrn
, buf
, &tmp
);
398 PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret
));
403 /* set up decoding filter */
404 af
= audio_format_name(pt
->audio_format_num
);
405 tmp
= make_message("%sdec", af
);
406 ret
= check_filter_arg(tmp
, &pt
->fn
.conf
);
410 pt
->fn
.filter_num
= ret
;
411 decoder
= filters
+ ret
;
412 pt
->fn
.task
.pre_select
= decoder
->pre_select
;
413 pt
->fn
.task
.post_select
= decoder
->post_select
;
414 sprintf(pt
->fn
.task
.status
, "%s decoder", af
);
415 pt
->fn
.btrn
= btr_new_node(&(struct btr_node_description
)
416 EMBRACE(.name
= decoder
->name
, .parent
= pt
->rn
.btrn
,
417 .handler
= decoder
->execute
, .context
= &pt
->fn
));
418 decoder
->open(&pt
->fn
);
420 /* setup default writer */
421 pt
->wn
.conf
= check_writer_arg_or_die(NULL
, &pt
->wn
.writer_num
);
422 pt
->wn
.task
.error
= 0;
424 /* success, register tasks */
425 register_task(&sched
, &pt
->rn
.task
);
426 register_task(&sched
, &pt
->fn
.task
);
427 register_writer_node(&pt
->wn
, pt
->fn
.btrn
, &sched
);
430 afh_recv
->close(&pt
->rn
);
431 btr_remove_node(&pt
->rn
.btrn
);
432 afh_recv
->free_config(pt
->rn
.conf
);
436 static int next_valid_file(struct play_task
*pt
)
438 int i
, j
= pt
->current_file
;
440 FOR_EACH_PLAYLIST_FILE(i
) {
441 j
= (j
+ 1) % conf
.inputs_num
;
445 return -E_NO_VALID_FILES
;
448 static int load_next_file(struct play_task
*pt
)
453 if (pt
->rq
== CRT_NONE
|| pt
->rq
== CRT_FILE_CHANGE
) {
455 ret
= next_valid_file(pt
);
459 } else if (pt
->rq
== CRT_REPOS
)
460 pt
->next_file
= pt
->current_file
;
463 pt
->invalid
[pt
->next_file
] = true;
467 pt
->current_file
= pt
->next_file
;
472 static void kill_stream(struct play_task
*pt
)
474 task_notify(&pt
->wn
.task
, E_EOF
);
479 /* only called from com_prev(), nec. only if we have readline */
480 static int previous_valid_file(struct play_task
*pt
)
482 int i
, j
= pt
->current_file
;
484 FOR_EACH_PLAYLIST_FILE(i
) {
487 j
= conf
.inputs_num
- 1;
491 return -E_NO_VALID_FILES
;
494 #include "interactive.h"
497 * Define the default (internal) key mappings and helper functions to get the
498 * key sequence or the command from a key id, which is what we obtain from
499 * i9e/readline when the key is pressed.
501 * In some of these helper functions we could return pointers to the constant
502 * arrays defined below. However, for others we can not, so let's better be
503 * consistent and allocate all returned strings on the heap.
506 #define INTERNAL_KEYMAP_ENTRIES \
507 KEYMAP_ENTRY("^", "jmp 0"), \
508 KEYMAP_ENTRY("1", "jmp 10"), \
509 KEYMAP_ENTRY("2", "jmp 21"), \
510 KEYMAP_ENTRY("3", "jmp 32"), \
511 KEYMAP_ENTRY("4", "jmp 43"), \
512 KEYMAP_ENTRY("5", "jmp 54"), \
513 KEYMAP_ENTRY("6", "jmp 65"), \
514 KEYMAP_ENTRY("7", "jmp 76"), \
515 KEYMAP_ENTRY("8", "jmp 87"), \
516 KEYMAP_ENTRY("9", "jmp 98"), \
517 KEYMAP_ENTRY("+", "next"), \
518 KEYMAP_ENTRY("-", "prev"), \
519 KEYMAP_ENTRY(":", "bg"), \
520 KEYMAP_ENTRY("i", "info"), \
521 KEYMAP_ENTRY("l", "ls"), \
522 KEYMAP_ENTRY("s", "play"), \
523 KEYMAP_ENTRY("p", "pause"), \
524 KEYMAP_ENTRY("q", "quit"), \
525 KEYMAP_ENTRY("?", "help"), \
526 KEYMAP_ENTRY("\033[D", "ff -10"), \
527 KEYMAP_ENTRY("\033[C", "ff 10"), \
528 KEYMAP_ENTRY("\033[A", "ff 60"), \
529 KEYMAP_ENTRY("\033[B", "ff -60"), \
531 #define KEYMAP_ENTRY(a, b) a
532 static const char *default_keyseqs
[] = {INTERNAL_KEYMAP_ENTRIES
};
534 #define KEYMAP_ENTRY(a, b) b
535 static const char *default_commands
[] = {INTERNAL_KEYMAP_ENTRIES
};
537 #define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
538 #define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + conf.key_map_given)
539 #define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
541 static inline bool is_internal_key(int key
)
543 return key
< NUM_INTERNALLY_MAPPED_KEYS
;
546 /* for internal keys, the key id is just the array index. */
547 static inline int get_internal_key_map_idx(int key
)
549 assert(is_internal_key(key
));
554 * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
555 * difference is the index to the array of user defined key maps.
557 static inline int get_user_key_map_idx(int key
)
559 assert(!is_internal_key(key
));
560 return key
- NUM_INTERNALLY_MAPPED_KEYS
;
563 static inline int get_key_map_idx(int key
)
565 return is_internal_key(key
)?
566 get_internal_key_map_idx(key
) : get_user_key_map_idx(key
);
569 static inline char *get_user_key_map_arg(int key
)
571 return conf
.key_map_arg
[get_user_key_map_idx(key
)];
574 static inline char *get_internal_key_map_seq(int key
)
576 return para_strdup(default_keyseqs
[get_internal_key_map_idx(key
)]);
579 static char *get_user_key_map_seq(int key
)
581 const char *kma
= get_user_key_map_arg(key
);
582 const char *p
= strchr(kma
+ 1, ':');
589 result
= para_malloc(len
+ 1);
590 memcpy(result
, kma
, len
);
595 static char *get_key_map_seq(int key
)
597 return is_internal_key(key
)?
598 get_internal_key_map_seq(key
) : get_user_key_map_seq(key
);
601 static inline char *get_internal_key_map_cmd(int key
)
603 return para_strdup(default_commands
[get_internal_key_map_idx(key
)]);
606 static char *get_user_key_map_cmd(int key
)
608 const char *kma
= get_user_key_map_arg(key
);
609 const char *p
= strchr(kma
+ 1, ':');
613 return para_strdup(p
+ 1);
616 static char *get_key_map_cmd(int key
)
618 return is_internal_key(key
)?
619 get_internal_key_map_cmd(key
) : get_user_key_map_cmd(key
);
622 static char **get_mapped_keyseqs(void)
627 result
= para_malloc((NUM_MAPPED_KEYS
+ 1) * sizeof(char *));
628 FOR_EACH_MAPPED_KEY(i
) {
629 int idx
= get_key_map_idx(i
);
630 char *seq
= get_key_map_seq(i
);
631 char *cmd
= get_key_map_cmd(i
);
632 bool internal
= is_internal_key(i
);
633 PARA_DEBUG_LOG("%s key sequence #%d: %s -> %s\n",
634 internal
? "internal" : "user-defined",
643 #include "play_completion.h"
646 /* defines one command of para_play */
649 int (*handler
)(struct play_task
*, int, char**);
650 const char *description
;
655 #include "play_command_list.h"
656 static struct pp_command pp_cmds
[] = {DEFINE_PLAY_CMD_ARRAY
};
657 #define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
659 #include "play_completion.h"
660 static struct i9e_completer pp_completers
[];
662 I9E_DUMMY_COMPLETER(jmp
);
663 I9E_DUMMY_COMPLETER(next
);
664 I9E_DUMMY_COMPLETER(prev
);
665 I9E_DUMMY_COMPLETER(fg
);
666 I9E_DUMMY_COMPLETER(bg
);
667 I9E_DUMMY_COMPLETER(ls
);
668 I9E_DUMMY_COMPLETER(info
);
669 I9E_DUMMY_COMPLETER(play
);
670 I9E_DUMMY_COMPLETER(pause
);
671 I9E_DUMMY_COMPLETER(stop
);
672 I9E_DUMMY_COMPLETER(tasks
);
673 I9E_DUMMY_COMPLETER(quit
);
674 I9E_DUMMY_COMPLETER(ff
);
676 static void help_completer(struct i9e_completion_info
*ci
,
677 struct i9e_completion_result
*result
)
679 result
->matches
= i9e_complete_commands(ci
->word
, pp_completers
);
682 static struct i9e_completer pp_completers
[] = {PLAY_COMPLETERS
{.name
= NULL
}};
684 static void attach_stdout(struct play_task
*pt
, const char *name
)
688 pt
->btrn
= btr_new_node(&(struct btr_node_description
)
689 EMBRACE(.name
= name
));
690 i9e_attach_to_stdout(pt
->btrn
);
693 static void detach_stdout(struct play_task
*pt
)
695 btr_remove_node(&pt
->btrn
);
698 static int com_quit(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
701 return -E_PLAY_SYNTAX
;
702 pt
->rq
= CRT_TERM_RQ
;
706 static int com_help(struct play_task
*pt
, int argc
, char **argv
)
713 return -E_PLAY_SYNTAX
;
716 FOR_EACH_COMMAND(i
) {
717 sz
= xasprintf(&buf
, "%s\t%s\n", pp_cmds
[i
].name
,
718 pp_cmds
[i
].description
);
719 btr_add_output(buf
, sz
, pt
->btrn
);
722 FOR_EACH_MAPPED_KEY(i
) {
723 bool internal
= is_internal_key(i
);
724 int idx
= get_key_map_idx(i
);
725 char *seq
= get_key_map_seq(i
);
726 char *cmd
= get_key_map_cmd(i
);
728 "%s key #%d: %s -> %s\n",
729 internal
? "internal" : "user-defined",
731 btr_add_output(buf
, sz
, pt
->btrn
);
738 FOR_EACH_COMMAND(i
) {
739 if (strcmp(pp_cmds
[i
].name
, argv
[1]))
746 pp_cmds
[i
].description
,
750 btr_add_output(buf
, sz
, pt
->btrn
);
753 return -E_BAD_PLAY_CMD
;
756 static int com_info(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
760 static char dflt
[] = "[no information available]";
763 return -E_PLAY_SYNTAX
;
764 sz
= xasprintf(&buf
, "playlist_pos: %u\npath: %s\n",
765 pt
->current_file
, conf
.inputs
[pt
->current_file
]);
766 btr_add_output(buf
, sz
, pt
->btrn
);
767 buf
= pt
->afhi_txt
? pt
->afhi_txt
: dflt
;
768 btr_add_output_dont_free(buf
, strlen(buf
), pt
->btrn
);
772 static void list_file(struct play_task
*pt
, int num
)
777 sz
= xasprintf(&buf
, "%s %4u %s\n", num
== pt
->current_file
?
778 "*" : " ", num
, conf
.inputs
[num
]);
779 btr_add_output(buf
, sz
, pt
->btrn
);
782 static int com_tasks(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
789 return -E_PLAY_SYNTAX
;
791 buf
= get_task_list(&sched
);
792 btr_add_output(buf
, strlen(buf
), pt
->btrn
);
793 state
= get_playback_state(pt
);
794 sz
= xasprintf(&buf
, "state: %c\n", state
);
795 btr_add_output(buf
, sz
, pt
->btrn
);
799 static int com_ls(struct play_task
*pt
, int argc
, char **argv
)
804 FOR_EACH_PLAYLIST_FILE(i
)
808 for (j
= 1; j
< argc
; j
++) {
809 FOR_EACH_PLAYLIST_FILE(i
) {
810 ret
= fnmatch(argv
[j
], conf
.inputs
[i
], 0);
811 if (ret
== 0) /* match */
818 static int com_play(struct play_task
*pt
, int argc
, char **argv
)
825 return -E_PLAY_SYNTAX
;
826 state
= get_playback_state(pt
);
830 pt
->next_file
= pt
->current_file
;
835 ret
= para_atoi32(argv
[1], &x
);
838 if (x
< 0 || x
>= conf
.inputs_num
)
839 return -ERRNO_TO_PARA_ERROR(EINVAL
);
842 pt
->rq
= CRT_FILE_CHANGE
;
846 static int com_pause(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
849 long unsigned seconds
, ss
;
852 return -E_PLAY_SYNTAX
;
853 state
= get_playback_state(pt
);
857 seconds
= get_play_time(pt
);
861 ss
= seconds
* pt
->num_chunks
/ pt
->seconds
+ 1;
862 ss
= PARA_MAX(ss
, 0UL);
863 ss
= PARA_MIN(ss
, pt
->num_chunks
);
864 pt
->start_chunk
= ss
;
869 static int com_prev(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
875 return -E_PLAY_SYNTAX
;
876 ret
= previous_valid_file(pt
);
881 pt
->rq
= CRT_FILE_CHANGE
;
885 static int com_next(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
890 return -E_PLAY_SYNTAX
;
891 ret
= next_valid_file(pt
);
896 pt
->rq
= CRT_FILE_CHANGE
;
900 static int com_fg(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
903 return -E_PLAY_SYNTAX
;
904 pt
->background
= false;
908 static int com_bg(struct play_task
*pt
, int argc
, __a_unused
char **argv
)
911 return -E_PLAY_SYNTAX
;
912 pt
->background
= true;
916 static int com_jmp(struct play_task
*pt
, int argc
, char **argv
)
922 return -E_PLAY_SYNTAX
;
923 ret
= para_atoi32(argv
[1], &percent
);
926 if (percent
< 0 || percent
> 100)
927 return -ERRNO_TO_PARA_ERROR(EINVAL
);
928 if (pt
->playing
&& !pt
->fn
.btrn
)
930 pt
->start_chunk
= percent
* pt
->num_chunks
/ 100;
938 static int com_ff(struct play_task
*pt
, int argc
, char **argv
)
944 return -E_PLAY_SYNTAX
;
945 ret
= para_atoi32(argv
[1], &seconds
);
948 if (pt
->playing
&& !pt
->fn
.btrn
)
950 seconds
+= get_play_time(pt
);
951 seconds
= PARA_MIN(seconds
, (typeof(seconds
))pt
->seconds
- 4);
952 seconds
= PARA_MAX(seconds
, 0);
953 pt
->start_chunk
= pt
->num_chunks
* seconds
/ pt
->seconds
;
954 pt
->start_chunk
= PARA_MIN(pt
->start_chunk
, pt
->num_chunks
- 1);
955 pt
->start_chunk
= PARA_MAX(pt
->start_chunk
, 0UL);
963 static int run_command(char *line
, struct play_task
*pt
)
968 attach_stdout(pt
, __FUNCTION__
);
969 ret
= create_argv(line
, " ", &argv
);
971 PARA_ERROR_LOG("parse error: %s\n", para_strerror(-ret
));
977 FOR_EACH_COMMAND(i
) {
978 if (strcmp(pp_cmds
[i
].name
, argv
[0]))
980 ret
= pp_cmds
[i
].handler(pt
, argc
, argv
);
982 PARA_WARNING_LOG("%s: %s\n", pt
->background
?
983 "" : argv
[0], para_strerror(-ret
));
987 PARA_WARNING_LOG("invalid command: %s\n", argv
[0]);
994 static int play_i9e_line_handler(char *line
)
996 struct play_task
*pt
= &play_task
;
999 if (line
== NULL
|| !*line
)
1001 ret
= run_command(line
, pt
);
1007 static int play_i9e_key_handler(int key
)
1009 struct play_task
*pt
= &play_task
;
1010 int idx
= get_key_map_idx(key
);
1011 char *seq
= get_key_map_seq(key
);
1012 char *cmd
= get_key_map_cmd(key
);
1013 bool internal
= is_internal_key(key
);
1015 PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
1016 key
, internal
? "internal" : "user-defined",
1018 run_command(cmd
, pt
);
1021 pt
->next_update
= *now
;
1025 static struct i9e_client_info ici
= {
1027 .prompt
= "para_play> ",
1028 .line_handler
= play_i9e_line_handler
,
1029 .key_handler
= play_i9e_key_handler
,
1030 .completers
= pp_completers
,
1033 static void sigint_handler(int sig
)
1035 play_task
.background
= true;
1036 i9e_signal_dispatch(sig
);
1040 * We start with para_log() set to the standard log function which writes to
1041 * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
1044 static void session_open(__a_unused
struct play_task
*pt
)
1048 struct sigaction act
;
1050 PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("play"));
1051 if (conf
.history_file_given
)
1052 history_file
= para_strdup(conf
.history_file_arg
);
1054 char *home
= para_homedir();
1055 history_file
= make_message("%s/.paraslash/play.history",
1059 ici
.history_file
= history_file
;
1060 ici
.loglevel
= loglevel
;
1062 act
.sa_handler
= sigint_handler
;
1063 sigemptyset(&act
.sa_mask
);
1065 sigaction(SIGINT
, &act
, NULL
);
1066 act
.sa_handler
= i9e_signal_dispatch
;
1067 sigemptyset(&act
.sa_mask
);
1069 sigaction(SIGWINCH
, &act
, NULL
);
1070 sched
.select_function
= i9e_select
;
1072 ici
.bound_keyseqs
= get_mapped_keyseqs();
1073 pt
->btrn
= ici
.producer
= btr_new_node(&(struct btr_node_description
)
1074 EMBRACE(.name
= __FUNCTION__
));
1075 ret
= i9e_open(&ici
, &sched
);
1084 PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret
));
1088 static void session_update_time_string(struct play_task
*pt
, char *str
, unsigned len
)
1093 if (btr_get_output_queue_size(pt
->btrn
) > 0)
1095 if (btr_get_input_queue_size(pt
->btrn
) > 0)
1098 ie9_print_status_bar(str
, len
);
1102 * If we are about to die we must call i9e_close() to reset the terminal.
1103 * However, i9e_close() must be called in *this* context, i.e. from
1104 * play_task.post_select() rather than from i9e_post_select(), because
1105 * otherwise i9e would access freed memory upon return. So the play task must
1106 * stay alive until the i9e task terminates.
1108 * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
1109 * and reschedule. In the next iteration, i9e->post_select returns an error and
1110 * terminates. Subsequent calls to i9e_get_error() then return negative and we
1111 * are allowed to call i9e_close() and terminate as well.
1113 static int session_post_select(__a_unused
struct sched
*s
, struct task
*t
)
1115 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1121 attach_stdout(pt
, __FUNCTION__
);
1122 ret
= i9e_get_error();
1126 para_log
= stderr_log
;
1127 free(ici
.history_file
);
1130 if (get_playback_state(pt
) == 'X')
1131 i9e_signal_dispatch(SIGTERM
);
1135 #else /* HAVE_READLINE */
1137 static int session_post_select(struct sched
*s
, struct task
*t
)
1139 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1142 if (!FD_ISSET(STDIN_FILENO
, &s
->rfds
))
1144 if (read(STDIN_FILENO
, &c
, 1))
1150 static void session_open(__a_unused
struct play_task
*pt
)
1154 static void session_update_time_string(__a_unused
struct play_task
*pt
,
1155 char *str
, __a_unused
unsigned len
)
1157 printf("\r%s ", str
);
1160 #endif /* HAVE_READLINE */
1162 static void play_pre_select(struct sched
*s
, struct task
*t
)
1164 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1167 para_fd_set(STDIN_FILENO
, &s
->rfds
, &s
->max_fileno
);
1168 state
= get_playback_state(pt
);
1169 if (state
== 'R' || state
== 'F' || state
== 'X')
1170 return sched_min_delay(s
);
1171 sched_request_barrier_or_min_delay(&pt
->next_update
, s
);
1174 static unsigned get_time_string(struct play_task
*pt
, char **result
)
1176 int seconds
, length
;
1177 char state
= get_playback_state(pt
);
1179 /* do not return anything if things are about to change */
1180 if (state
!= 'P' && state
!= 'U') {
1184 length
= pt
->seconds
;
1186 return xasprintf(result
, "0:00 [0:00] (0%%/0:00)");
1187 seconds
= get_play_time(pt
);
1188 return xasprintf(result
, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
1192 (length
- seconds
) / 60,
1193 (length
- seconds
) % 60,
1194 length
? (seconds
* 100 + length
/ 2) / length
: 0,
1197 conf
.inputs
[pt
->current_file
]
1201 static void play_post_select(struct sched
*s
, struct task
*t
)
1203 struct play_task
*pt
= container_of(t
, struct play_task
, task
);
1206 ret
= eof_cleanup(pt
);
1208 pt
->rq
= CRT_TERM_RQ
;
1211 ret
= session_post_select(s
, t
);
1214 if (!pt
->wn
.btrn
&& !pt
->fn
.btrn
) {
1215 char state
= get_playback_state(pt
);
1216 if (state
== 'P' || state
== 'R' || state
== 'F') {
1217 PARA_NOTICE_LOG("state: %c\n", state
);
1218 ret
= load_next_file(pt
);
1220 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1221 pt
->rq
= CRT_TERM_RQ
;
1225 pt
->next_update
= *now
;
1228 if (tv_diff(now
, &pt
->next_update
, NULL
) >= 0) {
1230 unsigned len
= get_time_string(pt
, &str
);
1231 struct timeval delay
= {.tv_sec
= 0, .tv_usec
= 100 * 1000};
1233 session_update_time_string(pt
, str
, len
);
1235 tv_add(now
, &delay
, &pt
->next_update
);
1243 * The main function of para_play.
1245 * \param argc Standard.
1246 * \param argv Standard.
1248 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
1250 int main(int argc
, char *argv
[])
1253 struct play_task
*pt
= &play_task
;
1255 /* needed this early to make help work */
1260 gettimeofday(now
, NULL
);
1261 sched
.default_timeout
.tv_sec
= 5;
1263 parse_config_or_die(argc
, argv
);
1264 if (conf
.inputs_num
== 0)
1265 print_help_and_die();
1266 check_afh_receiver_or_die();
1269 if (conf
.randomize_given
)
1270 shuffle(conf
.inputs
, conf
.inputs_num
);
1271 pt
->invalid
= para_calloc(sizeof(*pt
->invalid
) * conf
.inputs_num
);
1272 pt
->rq
= CRT_FILE_CHANGE
;
1273 pt
->current_file
= conf
.inputs_num
- 1;
1275 pt
->task
.pre_select
= play_pre_select
;
1276 pt
->task
.post_select
= play_post_select
;
1277 sprintf(pt
->task
.status
, "play task");
1278 register_task(&sched
, &pt
->task
);
1279 ret
= schedule(&sched
);
1281 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1282 return ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
;