1 /* Copyright (C) 2012 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
3 /** \file play.c Paraslash's standalone player. */
9 #include "recv_cmd.lsg.h"
10 #include "play_cmd.lsg.h"
11 #include "write_cmd.lsg.h"
17 #include "buffer_tree.h"
28 * Besides playback tasks which correspond to the receiver/filter/writer nodes,
29 * para_play creates two further tasks: The play task and the i9e task. It is
30 * important whether a function can be called in the context of para_play or
31 * i9e or both. As a rule, all command handlers are called only in i9e context via
32 * the line handler (input mode) or the key handler (command mode) below.
34 * Playlist handling is done exclusively in play context.
37 /** Array of error strings. */
40 static struct lls_parse_result
*play_lpr
;
42 #define CMD_PTR (lls_cmd(0, play_suite))
43 #define OPT_RESULT(_name) \
44 (lls_opt_result(LSG_PLAY_PARA_PLAY_OPT_ ## _name, play_lpr))
45 #define OPT_GIVEN(_name) (lls_opt_given(OPT_RESULT(_name)))
46 #define OPT_UINT32_VAL(_name) (lls_uint32_val(0, OPT_RESULT(_name)))
47 #define OPT_STRING_VAL(_name) (lls_string_val(0, OPT_RESULT(_name)))
50 * Describes a request to change the state of para_play.
52 * There is only one variable of this type: \a rq of the global play task
53 * structure. Command handlers only set this variable and the post_monitor()
54 * function of the play task investigates its value during each iteration of
55 * the scheduler run and performs the actual work.
57 enum state_change_request_type
{
58 /** Everybody is happy. */
60 /** Stream must be repositioned (com_jmp(), com_ff()). */
62 /** New file should be loaded (com_next()). */
64 /** Someone wants us for dead (com_quit()). */
70 /* A bit array of invalid files (those will be skipped). */
72 /* The file which is currently open. */
73 unsigned current_file
;
74 /* When to update the status again. */
75 struct timeval next_update
;
77 /* Root of the buffer tree for command and status output. */
78 struct btr_node
*btrn
;
80 /* The decoding machinery. */
81 struct receiver_node rn
;
82 struct filter_node fn
;
83 struct writer_node wn
;
85 /* See comment to enum \ref state_change_request_type above. */
86 enum state_change_request_type rq
;
87 /* only relevant if rq == CRT_FILE_CHANGE */
90 bg: read lines at prompt, fg: display status and wait
95 /* We have the *intention* to play. Set by com_play(). */
98 /* as returned by afh_recv->open() */
101 /* retrieved via the btr exec mechanism */
102 long unsigned start_chunk
;
103 long unsigned seconds
;
104 long unsigned num_chunks
;
108 typedef int (*play_cmd_handler_t
)(struct lls_parse_result
*lpr
);
109 struct play_command_info
{
110 play_cmd_handler_t handler
;
113 static int loglevel
= LL_WARNING
;
115 /** The log function which writes log messages to stderr. */
116 INIT_STDERR_LOGGING(loglevel
);
118 char *stat_item_values
[NUM_STAT_ITEMS
] = {NULL
};
120 static struct sched sched
;
121 static struct play_task play_task
, *pt
= &play_task
;
123 #define AFH_RECV_CMD (lls_cmd(LSG_RECV_CMD_CMD_AFH, recv_cmd_suite))
124 #define AFH_RECV ((struct receiver *)lls_user_data(AFH_RECV_CMD))
126 static unsigned *shuffle_map
;
128 static const char *get_playlist_file(unsigned idx
)
130 return lls_input(shuffle_map
[idx
], play_lpr
);
133 static void handle_help_flags(void)
137 if (OPT_GIVEN(DETAILED_HELP
))
138 help
= lls_long_help(CMD_PTR
);
139 else if (OPT_GIVEN(HELP
) || lls_num_inputs(play_lpr
) == 0)
140 help
= lls_short_help(CMD_PTR
);
143 printf("%s\n", help
);
148 static void parse_config_or_die(int argc
, char *argv
[])
154 ret
= lls(lls_parse(argc
, argv
, CMD_PTR
, &play_lpr
, &errctx
));
157 PARA_EMERG_LOG("%s\n", errctx
);
159 PARA_EMERG_LOG("failed to parse command line options: %s\n",
160 para_strerror(-ret
));
163 loglevel
= OPT_UINT32_VAL(LOGLEVEL
);
164 version_handle_flag("play", OPT_GIVEN(VERSION
));
165 handle_help_flags(); /* also handles the zero-arg case */
166 ret
= lsu_merge_config_file_options(OPT_STRING_VAL(CONFIG_FILE
),
167 "play.conf", &play_lpr
, CMD_PTR
, play_suite
, 0 /* flags */);
169 PARA_EMERG_LOG("failed to parse config file: %s\n",
170 para_strerror(-ret
));
173 loglevel
= OPT_UINT32_VAL(LOGLEVEL
);
174 num_kmas
= OPT_GIVEN(KEY_MAP
);
175 for (i
= 0; i
< num_kmas
; i
++) {
176 const char *kma
= lls_string_val(i
, OPT_RESULT(KEY_MAP
));
177 if (*kma
&& strchr(kma
+ 1, ':'))
179 PARA_EMERG_LOG("invalid key map arg: %s\n", kma
);
184 static char get_playback_state(void)
187 case CRT_NONE
: return pt
->playing
? 'P' : 'U';
188 case CRT_REPOS
: return 'R';
189 case CRT_FILE_CHANGE
: return 'F';
190 case CRT_TERM_RQ
: return 'X';
195 /* returns number of milliseconds */
196 static long unsigned get_play_time(void)
198 char state
= get_playback_state();
199 long unsigned result
;
201 if (state
!= 'P' && state
!= 'U')
203 if (pt
->num_chunks
== 0 || pt
->seconds
== 0)
205 /* where the stream started (in milliseconds) */
206 result
= 1000ULL * pt
->start_chunk
* pt
->seconds
/ pt
->num_chunks
;
207 if (pt
->wn
.btrn
) { /* Add the uptime of the writer node */
208 struct timeval diff
= {.tv_sec
= 0}, wstime
;
209 btr_get_node_start(pt
->wn
.btrn
, &wstime
);
210 if (wstime
.tv_sec
> 0)
211 tv_diff(now
, &wstime
, &diff
);
212 result
+= tv2ms(&diff
);
214 result
= PARA_MIN(result
, pt
->seconds
* 1000);
215 result
= PARA_MAX(result
, 0UL);
219 static void wipe_receiver_node(void)
221 PARA_NOTICE_LOG("cleaning up receiver node\n");
222 btr_remove_node(&pt
->rn
.btrn
);
223 AFH_RECV
->close(&pt
->rn
);
224 lls_free_parse_result(pt
->rn
.lpr
, AFH_RECV_CMD
);
225 memset(&pt
->rn
, 0, sizeof(struct receiver_node
));
228 /* returns: 0 not eof, 1: eof, < 0: fatal error. */
229 static int get_playback_error(void)
235 err
= task_status(pt
->wn
.task
);
238 if (task_status(pt
->fn
.task
) >= 0)
240 if (task_status(pt
->rn
.task
) >= 0)
242 if (err
== -E_BTR_EOF
|| err
== -E_RECV_EOF
|| err
== -E_EOF
243 || err
== -E_WRITE_COMMON_EOF
)
248 static int eof_cleanup(void)
250 const struct filter
*decoder
;
251 const struct writer
*w
= writer_get(-1); /* default writer */
254 ret
= get_playback_error();
257 PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
258 task_reap(&pt
->wn
.task
);
260 btr_remove_node(&pt
->wn
.btrn
);
261 lls_free_parse_result(pt
->wn
.lpr
, WRITE_CMD(pt
->wn
.wid
));
262 memset(&pt
->wn
, 0, sizeof(struct writer_node
));
264 decoder
= filter_get(pt
->fn
.filter_num
);
265 task_reap(&pt
->fn
.task
);
267 decoder
->close(&pt
->fn
);
268 btr_remove_node(&pt
->fn
.btrn
);
270 memset(&pt
->fn
, 0, sizeof(struct filter_node
));
272 task_reap(&pt
->rn
.task
);
273 btr_remove_node(&pt
->rn
.btrn
);
275 * On eof (ret > 0), we do not wipe the receiver node struct until a
276 * new file is loaded because we still need it for jumping around when
280 wipe_receiver_node();
284 static int shuffle_compare(__a_unused
const void *a
, __a_unused
const void *b
)
286 return para_random(100) - 50;
289 static void init_shuffle_map(void)
291 unsigned n
, num_inputs
= lls_num_inputs(play_lpr
);
292 shuffle_map
= arr_alloc(num_inputs
, sizeof(unsigned));
293 for (n
= 0; n
< num_inputs
; n
++)
295 if (!OPT_GIVEN(RANDOMIZE
))
298 qsort(shuffle_map
, num_inputs
, sizeof(unsigned), shuffle_compare
);
301 static struct btr_node
*new_recv_btrn(struct receiver_node
*rn
)
303 return btr_new_node(&(struct btr_node_description
)
304 EMBRACE(.name
= lls_command_name(AFH_RECV_CMD
), .context
= rn
,
305 .handler
= AFH_RECV
->execute
));
308 static int open_new_file(void)
311 const char *path
= get_playlist_file(pt
->next_file
);
312 char *tmp
= para_strdup(path
), *errctx
;
313 char *argv
[] = {"play", "-f", tmp
, "-b", "0", NULL
};
315 PARA_NOTICE_LOG("next file: %s\n", path
);
316 wipe_receiver_node();
318 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
319 ret
= lls(lls_parse(ARRAY_SIZE(argv
) - 1, argv
, AFH_RECV_CMD
,
320 &pt
->rn
.lpr
, &errctx
));
323 pt
->rn
.receiver
= AFH_RECV
;
324 ret
= AFH_RECV
->open(&pt
->rn
);
326 PARA_ERROR_LOG("could not open %s\n", path
);
329 pt
->audio_format_num
= ret
;
331 ret
= btr_exec_up(pt
->rn
.btrn
, "afhi", &pt
->afhi_txt
);
333 pt
->afhi_txt
= make_message("[afhi command failed]\n");
334 ret
= btr_exec_up(pt
->rn
.btrn
, "seconds_total", &tmp
);
339 ret
= para_atoi32(tmp
, &x
);
340 pt
->seconds
= ret
< 0? 1 : x
;
344 ret
= btr_exec_up(pt
->rn
.btrn
, "chunks_total", &tmp
);
349 ret
= para_atoi32(tmp
, &x
);
350 pt
->num_chunks
= ret
< 0? 1 : x
;
356 wipe_receiver_node();
360 static int load_file(void)
365 const struct filter
*decoder
;
366 static struct lls_parse_result
*filter_lpr
, *writer_lpr
;
368 btr_remove_node(&pt
->rn
.btrn
);
369 if (!pt
->rn
.receiver
|| pt
->next_file
!= pt
->current_file
) {
370 ret
= open_new_file();
374 pt
->rn
.btrn
= new_recv_btrn(&pt
->rn
);
375 sprintf(buf
, "repos %lu", pt
->start_chunk
);
376 ret
= btr_exec_up(pt
->rn
.btrn
, buf
, &tmp
);
378 PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret
));
383 /* set up decoding filter */
384 af
= audio_format_name(pt
->audio_format_num
);
385 tmp
= make_message("%sdec", af
);
386 ret
= filter_setup(tmp
, &pt
->fn
.conf
, &filter_lpr
);
390 pt
->fn
.filter_num
= ret
;
391 pt
->fn
.lpr
= filter_lpr
;
392 decoder
= filter_get(ret
);
393 pt
->fn
.btrn
= btr_new_node(&(struct btr_node_description
)
394 EMBRACE(.name
= filter_name(pt
->fn
.filter_num
),
395 .parent
= pt
->rn
.btrn
, .handler
= decoder
->execute
,
396 .context
= &pt
->fn
));
398 decoder
->open(&pt
->fn
);
399 PARA_INFO_LOG("buffer tree:\n");
400 btr_log_tree(pt
->rn
.btrn
, LL_INFO
);
402 /* setup default writer */
403 pt
->wn
.wid
= check_writer_arg_or_die(NULL
, &writer_lpr
);
404 pt
->wn
.lpr
= writer_lpr
;
405 /* success, register tasks */
406 pt
->rn
.task
= task_register(
407 &(struct task_info
) {
408 .name
= lls_command_name(AFH_RECV_CMD
),
409 .pre_monitor
= AFH_RECV
->pre_monitor
,
410 .post_monitor
= AFH_RECV
->post_monitor
,
413 sprintf(buf
, "%s decoder", af
);
414 pt
->fn
.task
= task_register(
415 &(struct task_info
) {
417 .pre_monitor
= decoder
->pre_monitor
,
418 .post_monitor
= decoder
->post_monitor
,
421 register_writer_node(&pt
->wn
, pt
->fn
.btrn
, &sched
);
424 wipe_receiver_node();
428 static int next_valid_file(void)
430 int i
, j
= pt
->current_file
;
431 unsigned num_inputs
= lls_num_inputs(play_lpr
);
433 if (j
== num_inputs
- 1) {
434 switch (OPT_UINT32_VAL(END_OF_PLAYLIST
)) {
435 case EOP_LOOP
: break;
439 case EOP_QUIT
: return -E_EOP
;
442 for (i
= 0; i
< num_inputs
; i
++) {
443 j
= (j
+ 1) % num_inputs
;
447 return -E_NO_VALID_FILES
;
450 static int load_next_file(void)
455 if (pt
->rq
== CRT_NONE
) {
457 ret
= next_valid_file();
461 } else if (pt
->rq
== CRT_REPOS
)
462 pt
->next_file
= pt
->current_file
;
465 PARA_ERROR_LOG("%s: marking file as invalid\n",
466 para_strerror(-ret
));
467 pt
->invalid
[pt
->next_file
] = true;
471 pt
->current_file
= pt
->next_file
;
476 static void kill_stream(void)
479 task_notify(pt
->wn
.task
, E_EOF
);
484 /* only called from com_prev(), nec. only if we have readline */
485 static int previous_valid_file(void)
487 int i
, j
= pt
->current_file
;
488 unsigned num_inputs
= lls_num_inputs(play_lpr
);
490 for (i
= 0; i
< num_inputs
; i
++) {
497 return -E_NO_VALID_FILES
;
500 #include "interactive.h"
503 * Define the default (internal) key mappings and helper functions to get the
504 * key sequence or the command from a key id, which is what we obtain from
505 * i9e/readline when the key is pressed.
507 * In some of these helper functions we could return pointers to the constant
508 * arrays defined below. However, for others we can not, so let's better be
509 * consistent and allocate all returned strings on the heap.
512 #define INTERNAL_KEYMAP_ENTRIES \
513 KEYMAP_ENTRY("^", "jmp 0"), \
514 KEYMAP_ENTRY("1", "jmp 10"), \
515 KEYMAP_ENTRY("2", "jmp 21"), \
516 KEYMAP_ENTRY("3", "jmp 32"), \
517 KEYMAP_ENTRY("4", "jmp 43"), \
518 KEYMAP_ENTRY("5", "jmp 54"), \
519 KEYMAP_ENTRY("6", "jmp 65"), \
520 KEYMAP_ENTRY("7", "jmp 76"), \
521 KEYMAP_ENTRY("8", "jmp 87"), \
522 KEYMAP_ENTRY("9", "jmp 98"), \
523 KEYMAP_ENTRY("+", "next"), \
524 KEYMAP_ENTRY("-", "prev"), \
525 KEYMAP_ENTRY(":", "bg"), \
526 KEYMAP_ENTRY("i", "info"), \
527 KEYMAP_ENTRY("l", "ls"), \
528 KEYMAP_ENTRY("s", "play"), \
529 KEYMAP_ENTRY("p", "pause"), \
530 KEYMAP_ENTRY("q", "quit"), \
531 KEYMAP_ENTRY("?", "help"), \
532 KEYMAP_ENTRY("\033[D", "ff -10"), \
533 KEYMAP_ENTRY("\033[C", "ff 10"), \
534 KEYMAP_ENTRY("\033[A", "ff 60"), \
535 KEYMAP_ENTRY("\033[B", "ff -60"), \
537 #define KEYMAP_ENTRY(a, b) a
538 static const char *default_keyseqs
[] = {INTERNAL_KEYMAP_ENTRIES
};
540 #define KEYMAP_ENTRY(a, b) b
541 static const char *default_commands
[] = {INTERNAL_KEYMAP_ENTRIES
};
543 #define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
544 #define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + OPT_GIVEN(KEY_MAP))
545 #define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
547 static inline bool is_internal_key(int key
)
549 return key
< NUM_INTERNALLY_MAPPED_KEYS
;
552 /* for internal keys, the key id is just the array index. */
553 static inline int get_internal_key_map_idx(int key
)
555 assert(is_internal_key(key
));
560 * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
561 * difference is the index to the array of user defined key maps.
563 static inline int get_user_key_map_idx(int key
)
565 assert(!is_internal_key(key
));
566 return key
- NUM_INTERNALLY_MAPPED_KEYS
;
569 static inline int get_key_map_idx(int key
)
571 return is_internal_key(key
)?
572 get_internal_key_map_idx(key
) : get_user_key_map_idx(key
);
575 static inline const char *get_user_key_map_arg(int key
)
577 return lls_string_val(get_user_key_map_idx(key
), OPT_RESULT(KEY_MAP
));
580 static inline char *get_internal_key_map_seq(int key
)
582 return para_strdup(default_keyseqs
[get_internal_key_map_idx(key
)]);
585 static char *get_user_key_map_seq(int key
)
587 const char *kma
= get_user_key_map_arg(key
);
588 const char *p
= strchr(kma
+ 1, ':');
595 result
= alloc(len
+ 1);
596 memcpy(result
, kma
, len
);
601 static char *get_key_map_seq(int key
)
603 return is_internal_key(key
)?
604 get_internal_key_map_seq(key
) : get_user_key_map_seq(key
);
607 static char *get_key_map_seq_safe(int key
)
609 const char hex
[] = "0123456789abcdef";
610 char *seq
= get_key_map_seq(key
), *sseq
;
611 size_t n
, len
= strlen(seq
);
613 if (len
== 1 && isprint(*seq
))
615 sseq
= alloc(2 + 2 * len
+ 1);
618 for (n
= 0; n
< len
; n
++) {
619 uint8_t val
= (seq
[n
] & 0xf0) >> 4;
620 sseq
[2 + 2 * n
] = hex
[val
];
622 sseq
[2 + 2 * n
+ 1] = hex
[val
];
625 sseq
[2 + 2 * n
] = '\0';
629 static inline char *get_internal_key_map_cmd(int key
)
631 return para_strdup(default_commands
[get_internal_key_map_idx(key
)]);
634 static char *get_user_key_map_cmd(int key
)
636 const char *kma
= get_user_key_map_arg(key
);
637 const char *p
= strchr(kma
+ 1, ':');
641 return para_strdup(p
+ 1);
644 static char *get_key_map_cmd(int key
)
646 return is_internal_key(key
)?
647 get_internal_key_map_cmd(key
) : get_user_key_map_cmd(key
);
650 static char **get_mapped_keyseqs(void)
655 result
= arr_alloc(NUM_MAPPED_KEYS
+ 1, sizeof(char *));
656 FOR_EACH_MAPPED_KEY(i
) {
657 char *seq
= get_key_map_seq(i
);
664 static struct i9e_completer pp_completers
[];
666 I9E_DUMMY_COMPLETER(jmp
);
667 I9E_DUMMY_COMPLETER(next
);
668 I9E_DUMMY_COMPLETER(prev
);
669 I9E_DUMMY_COMPLETER(fg
);
670 I9E_DUMMY_COMPLETER(bg
);
671 I9E_DUMMY_COMPLETER(ls
);
672 I9E_DUMMY_COMPLETER(info
);
673 I9E_DUMMY_COMPLETER(play
);
674 I9E_DUMMY_COMPLETER(pause
);
675 I9E_DUMMY_COMPLETER(tasks
);
676 I9E_DUMMY_COMPLETER(quit
);
677 I9E_DUMMY_COMPLETER(ff
);
679 static void help_completer(struct i9e_completion_info
*ci
,
680 struct i9e_completion_result
*cr
)
682 char *opts
[] = {LSG_PLAY_CMD_HELP_OPTS
, NULL
};
684 if (ci
->word
[0] == '-') {
685 i9e_complete_option(opts
, ci
, cr
);
688 cr
->matches
= i9e_complete_commands(ci
->word
, pp_completers
);
691 static struct i9e_completer pp_completers
[] = {
692 #define LSG_PLAY_CMD_CMD(_name) {.name = #_name, \
693 .completer = _name ## _completer}
694 LSG_PLAY_CMD_SUBCOMMANDS
695 #undef LSG_PLAY_CMD_CMD
699 static void attach_stdout(const char *name
)
703 pt
->btrn
= btr_new_node(&(struct btr_node_description
)
704 EMBRACE(.name
= name
));
705 i9e_attach_to_stdout(pt
->btrn
);
708 static void detach_stdout(void)
710 btr_remove_node(&pt
->btrn
);
713 #define EXPORT_PLAY_CMD_HANDLER(_cmd) \
714 const struct play_command_info lsg_play_cmd_com_ ## _cmd ## _user_data = { \
715 .handler = com_ ## _cmd \
718 static int com_quit(__a_unused
struct lls_parse_result
*lpr
)
720 pt
->rq
= CRT_TERM_RQ
;
723 EXPORT_PLAY_CMD_HANDLER(quit
);
725 static int com_help(struct lls_parse_result
*lpr
)
731 const struct lls_opt_result
*r
=
732 lls_opt_result(LSG_PLAY_CMD_HELP_OPT_LONG
, lpr
);
733 bool long_help
= lls_opt_given(r
);
735 if (!pt
->background
) {
736 FOR_EACH_MAPPED_KEY(i
) {
737 bool internal
= is_internal_key(i
);
738 int idx
= get_key_map_idx(i
);
739 char *seq
= get_key_map_seq_safe(i
);
740 char *kmc
= get_key_map_cmd(i
);
741 sz
= xasprintf(&buf
, "%s key #%d: %s -> %s\n",
742 internal
? "internal" : "user-defined",
744 btr_add_output(buf
, sz
, pt
->btrn
);
750 lsu_com_help(long_help
, lpr
, play_cmd_suite
, NULL
, &buf
, &n
);
751 btr_add_output(buf
, n
, pt
->btrn
);
754 EXPORT_PLAY_CMD_HANDLER(help
);
756 static int com_info(__a_unused
struct lls_parse_result
*lpr
)
760 static char dflt
[] = "[no information available]";
762 sz
= xasprintf(&buf
, "playlist_pos: %u\npath: %s\n",
763 pt
->current_file
, get_playlist_file(pt
->current_file
));
764 btr_add_output(buf
, sz
, pt
->btrn
);
765 buf
= pt
->afhi_txt
? pt
->afhi_txt
: dflt
;
766 btr_add_output_dont_free(buf
, strlen(buf
), pt
->btrn
);
769 EXPORT_PLAY_CMD_HANDLER(info
);
771 static void list_file(int num
)
776 sz
= xasprintf(&buf
, "%s %4d %s\n", num
== pt
->current_file
?
777 "*" : " ", num
, get_playlist_file(num
));
778 btr_add_output(buf
, sz
, pt
->btrn
);
781 static int com_tasks(__a_unused
struct lls_parse_result
*lpr
)
787 buf
= get_task_list(&sched
);
788 btr_add_output(buf
, strlen(buf
), pt
->btrn
);
789 state
= get_playback_state();
790 sz
= xasprintf(&buf
, "state: %c\n", state
);
791 btr_add_output(buf
, sz
, pt
->btrn
);
794 EXPORT_PLAY_CMD_HANDLER(tasks
);
796 static int com_ls(__a_unused
struct lls_parse_result
*lpr
)
799 unsigned num_inputs
= lls_num_inputs(play_lpr
);
801 for (i
= 0; i
< num_inputs
; i
++)
805 EXPORT_PLAY_CMD_HANDLER(ls
);
807 static int com_play(struct lls_parse_result
*lpr
)
813 ret
= lls(lls_check_arg_count(lpr
, 0, 1, &errctx
));
816 PARA_ERROR_LOG("%s\n", errctx
);
820 state
= get_playback_state();
821 if (lls_num_inputs(lpr
) == 0) {
824 pt
->next_file
= pt
->current_file
;
829 ret
= para_atoi32(lls_input(0, lpr
), &x
);
832 if (x
< 0 || x
>= lls_num_inputs(play_lpr
))
833 return -ERRNO_TO_PARA_ERROR(EINVAL
);
836 pt
->rq
= CRT_FILE_CHANGE
;
839 EXPORT_PLAY_CMD_HANDLER(play
);
841 static int com_pause(__a_unused
struct lls_parse_result
*lpr
)
845 unsigned long cn
; /* chunk num */
847 state
= get_playback_state();
851 ms
= get_play_time();
855 cn
= ms
* pt
->num_chunks
/ pt
->seconds
/ 1000 + 1;
856 cn
= PARA_MIN(cn
, pt
->num_chunks
);
857 pt
->start_chunk
= cn
;
862 EXPORT_PLAY_CMD_HANDLER(pause
);
864 static int com_prev(__a_unused
struct lls_parse_result
*lpr
)
868 ret
= previous_valid_file();
873 pt
->rq
= CRT_FILE_CHANGE
;
877 EXPORT_PLAY_CMD_HANDLER(prev
);
879 static int com_next(__a_unused
struct lls_parse_result
*lpr
)
883 ret
= next_valid_file();
888 pt
->rq
= CRT_FILE_CHANGE
;
892 EXPORT_PLAY_CMD_HANDLER(next
);
894 static int com_fg(__a_unused
struct lls_parse_result
*lpr
)
896 pt
->background
= false;
899 EXPORT_PLAY_CMD_HANDLER(fg
);
901 static int com_bg(__a_unused
struct lls_parse_result
*lpr
)
903 pt
->background
= true;
906 EXPORT_PLAY_CMD_HANDLER(bg
);
908 static int com_jmp(struct lls_parse_result
*lpr
)
914 ret
= lls(lls_check_arg_count(lpr
, 1, 1, &errctx
));
917 PARA_ERROR_LOG("%s\n", errctx
);
921 ret
= para_atoi32(lls_input(0, lpr
), &percent
);
924 if (percent
< 0 || percent
> 100)
925 return -ERRNO_TO_PARA_ERROR(EINVAL
);
927 return com_next(NULL
);
928 if (pt
->playing
&& !pt
->fn
.btrn
)
930 pt
->start_chunk
= percent
* pt
->num_chunks
/ 100;
937 EXPORT_PLAY_CMD_HANDLER(jmp
);
939 static int com_ff(struct lls_parse_result
*lpr
)
945 ret
= lls(lls_check_arg_count(lpr
, 1, 1, &errctx
));
948 PARA_ERROR_LOG("%s\n", errctx
);
952 ret
= para_atoi32(lls_input(0, lpr
), &seconds
);
955 if (pt
->playing
&& !pt
->fn
.btrn
)
957 seconds
+= (get_play_time() + 500) / 1000;
958 seconds
= PARA_MIN(seconds
, (typeof(seconds
))pt
->seconds
- 4);
959 seconds
= PARA_MAX(seconds
, 0);
960 pt
->start_chunk
= pt
->num_chunks
* seconds
/ pt
->seconds
;
961 pt
->start_chunk
= PARA_MIN(pt
->start_chunk
, pt
->num_chunks
- 1);
962 pt
->start_chunk
= PARA_MAX(pt
->start_chunk
, 0UL);
969 EXPORT_PLAY_CMD_HANDLER(ff
);
971 static int run_command(char *line
)
976 const struct play_command_info
*pci
;
977 struct lls_parse_result
*lpr
;
978 const struct lls_command
*cmd
;
980 attach_stdout(__FUNCTION__
);
981 ret
= create_argv(line
, " ", &argv
);
987 ret
= lls(lls_lookup_subcmd(argv
[0], play_cmd_suite
, &errctx
));
990 cmd
= lls_cmd(ret
, play_cmd_suite
);
991 ret
= lls(lls_parse(argc
, argv
, cmd
, &lpr
, &errctx
));
994 pci
= lls_user_data(cmd
);
995 ret
= pci
->handler(lpr
);
996 lls_free_parse_result(lpr
, cmd
);
999 PARA_ERROR_LOG("%s\n", errctx
);
1005 static int play_i9e_line_handler(char *line
)
1007 return run_command(line
);
1010 static int play_i9e_key_handler(int key
)
1012 int idx
= get_key_map_idx(key
);
1013 char *seq
= get_key_map_seq(key
);
1014 char *cmd
= get_key_map_cmd(key
);
1015 bool internal
= is_internal_key(key
);
1017 PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
1018 key
, internal
? "internal" : "user-defined",
1023 pt
->next_update
= *now
;
1027 static struct i9e_client_info ici
= {
1029 .prompt
= "para_play> ",
1030 .line_handler
= play_i9e_line_handler
,
1031 .key_handler
= play_i9e_key_handler
,
1032 .completers
= pp_completers
,
1035 static void sigint_handler(int sig
)
1037 pt
->background
= true;
1038 i9e_signal_dispatch(sig
);
1042 * We start with para_log() set to the standard log function which writes to
1043 * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
1046 static void session_open(void)
1050 struct sigaction act
;
1052 PARA_NOTICE_LOG("\n%s\n", version_text("play"));
1053 if (OPT_GIVEN(HISTORY_FILE
))
1054 history_file
= para_strdup(OPT_STRING_VAL(HISTORY_FILE
));
1056 char *home
= para_homedir();
1057 char *dot_para
= make_message("%s/.paraslash", home
);
1060 ret
= para_mkdir(dot_para
, 0777);
1061 /* warn, but otherwise ignore mkdir error */
1062 if (ret
< 0 && ret
!= -ERRNO_TO_PARA_ERROR(EEXIST
))
1063 PARA_WARNING_LOG("Can not create %s: %s\n", dot_para
,
1064 para_strerror(-ret
));
1065 history_file
= make_message("%s/play.history", dot_para
);
1068 ici
.history_file
= history_file
;
1069 ici
.loglevel
= loglevel
;
1071 act
.sa_handler
= sigint_handler
;
1072 sigemptyset(&act
.sa_mask
);
1074 sigaction(SIGINT
, &act
, NULL
);
1075 act
.sa_handler
= i9e_signal_dispatch
;
1076 sigemptyset(&act
.sa_mask
);
1078 sigaction(SIGWINCH
, &act
, NULL
);
1079 sched
.poll_function
= i9e_poll
;
1081 ici
.bound_keyseqs
= get_mapped_keyseqs();
1082 pt
->btrn
= ici
.producer
= btr_new_node(&(struct btr_node_description
)
1083 EMBRACE(.name
= __FUNCTION__
));
1084 ret
= i9e_open(&ici
, &sched
);
1093 PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret
));
1097 static void session_update_time_string(char *str
, unsigned len
)
1102 if (btr_get_output_queue_size(pt
->btrn
) > 0)
1104 if (btr_get_input_queue_size(pt
->btrn
) > 0)
1107 i9e_print_status_bar(str
, len
);
1111 * If we are about to die we must call i9e_close() to reset the terminal.
1112 * However, i9e_close() must be called in *this* context, i.e. from
1113 * play_task.post_monitor() rather than from i9e_post_monitor(), because
1114 * otherwise i9e would access freed memory upon return. So the play task must
1115 * stay alive until the i9e task terminates.
1117 * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
1118 * and reschedule. In the next iteration, i9e->post_monitor returns an error and
1119 * terminates. Subsequent calls to i9e_get_error() then return negative and we
1120 * are allowed to call i9e_close() and terminate as well.
1122 static int session_post_monitor(__a_unused
struct sched
*s
)
1129 attach_stdout(__FUNCTION__
);
1130 ret
= i9e_get_error();
1134 para_log
= stderr_log
;
1135 free(ici
.history_file
);
1138 if (get_playback_state() == 'X')
1139 i9e_signal_dispatch(SIGTERM
);
1143 #else /* HAVE_READLINE */
1145 static int session_post_monitor(struct sched
*s
)
1149 if (!sched_read_ok(STDIN_FILENO
, s
))
1151 if (read(STDIN_FILENO
, &c
, 1))
1157 static void session_open(void)
1161 static void session_update_time_string(char *str
, __a_unused
unsigned len
)
1163 printf("\r%s ", str
);
1166 #endif /* HAVE_READLINE */
1168 static void play_pre_monitor(struct sched
*s
, __a_unused
void *context
)
1172 sched_monitor_readfd(STDIN_FILENO
, s
);
1173 state
= get_playback_state();
1174 if (state
== 'R' || state
== 'F' || state
== 'X')
1175 return sched_min_delay(s
);
1176 sched_request_barrier_or_min_delay(&pt
->next_update
, s
);
1179 static unsigned get_time_string(char **result
)
1181 int seconds
, length
;
1182 char state
= get_playback_state();
1184 /* do not return anything if things are about to change */
1185 if (state
!= 'P' && state
!= 'U') {
1189 length
= pt
->seconds
;
1191 return xasprintf(result
, "0:00 [0:00] (0%%/0:00)");
1192 seconds
= (get_play_time() + 500) / 1000;
1193 return xasprintf(result
, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
1197 (length
- seconds
) / 60,
1198 (length
- seconds
) % 60,
1199 length
? (seconds
* 100 + length
/ 2) / length
: 0,
1202 get_playlist_file(pt
->current_file
)
1206 static int play_post_monitor(struct sched
*s
, __a_unused
void *context
)
1210 ret
= eof_cleanup();
1212 pt
->rq
= CRT_TERM_RQ
;
1215 ret
= session_post_monitor(s
);
1218 if (!pt
->wn
.btrn
&& !pt
->fn
.btrn
) {
1219 char state
= get_playback_state();
1220 if (state
== 'P' || state
== 'R' || state
== 'F') {
1221 PARA_NOTICE_LOG("state: %c\n", state
);
1222 ret
= load_next_file();
1224 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1225 pt
->rq
= CRT_TERM_RQ
;
1229 pt
->next_update
= *now
;
1232 if (tv_diff(now
, &pt
->next_update
, NULL
) >= 0) {
1234 unsigned len
= get_time_string(&str
);
1235 struct timeval delay
= {.tv_sec
= 0, .tv_usec
= 100 * 1000};
1237 session_update_time_string(str
, len
);
1239 tv_add(now
, &delay
, &pt
->next_update
);
1247 * The main function of para_play.
1249 * \param argc Standard.
1250 * \param argv Standard.
1252 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
1254 int main(int argc
, char *argv
[])
1257 unsigned num_inputs
;
1259 sched
.default_timeout
= 5000;
1260 parse_config_or_die(argc
, argv
);
1262 num_inputs
= lls_num_inputs(play_lpr
);
1264 pt
->invalid
= arr_zalloc(num_inputs
, sizeof(*pt
->invalid
));
1265 pt
->rq
= CRT_FILE_CHANGE
;
1267 pt
->task
= task_register(&(struct task_info
){
1269 .pre_monitor
= play_pre_monitor
,
1270 .post_monitor
= play_post_monitor
,
1273 ret
= schedule(&sched
);
1274 sched_shutdown(&sched
);
1276 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
1277 return ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
;