2 * Copyright (C) 2012-2014 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 __noreturn static void print_help_and_die(void)
142 struct ggo_help help = DEFINE_GGO_HELP(play);
143 unsigned flags = conf.detailed_help_given?
144 GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS;
146 ggo_print_help(&help, flags);
147 printf("supported audio formats: %s\n", AUDIO_FORMAT_HANDLERS);
151 static void parse_config_or_die(int argc, char *argv[])
155 struct play_cmdline_parser_params params = {
159 .check_ambiguity = 0,
163 play_cmdline_parser_ext(argc, argv, &conf, ¶ms);
164 loglevel = get_loglevel_by_name(conf.loglevel_arg);
165 version_handle_flag("play", conf.version_given);
166 if (conf.help_given || conf.detailed_help_given)
167 print_help_and_die();
168 if (conf.config_file_given)
169 config_file = para_strdup(conf.config_file_arg);
171 char *home = para_homedir();
172 config_file = make_message("%s/.paraslash/play.conf", home);
175 ret = file_exists(config_file);
176 if (conf.config_file_given && !ret) {
177 PARA_EMERG_LOG("can not read config file %s\n", config_file);
181 params.initialize = 0;
182 params.check_required = 1;
183 play_cmdline_parser_config_file(config_file, &conf, ¶ms);
184 loglevel = get_loglevel_by_name(conf.loglevel_arg);
186 for (i = 0; i < conf.key_map_given; i++) {
187 char *s = strchr(conf.key_map_arg[i] + 1, ':');
190 PARA_EMERG_LOG("invalid key map arg: %s\n", conf.key_map_arg[i]);
200 static char get_playback_state(struct play_task *pt)
203 case CRT_NONE: return pt->playing? 'P' : 'U';
204 case CRT_REPOS: return 'R';
205 case CRT_FILE_CHANGE: return 'F';
206 case CRT_TERM_RQ: return 'X';
211 static long unsigned get_play_time(struct play_task *pt)
213 char state = get_playback_state(pt);
214 long unsigned result;
216 if (state != 'P' && state != 'U')
218 if (pt->num_chunks == 0 || pt->seconds == 0)
220 /* where the stream started (in seconds) */
221 result = pt->start_chunk * pt->seconds / pt->num_chunks;
222 if (pt->wn.btrn) { /* Add the uptime of the writer node */
223 struct timeval diff = {.tv_sec = 0}, wstime;
224 btr_get_node_start(pt->wn.btrn, &wstime);
225 if (wstime.tv_sec > 0)
226 tv_diff(now, &wstime, &diff);
227 result += diff.tv_sec;
229 result = PARA_MIN(result, pt->seconds);
230 result = PARA_MAX(result, 0UL);
234 static void wipe_receiver_node(struct play_task *pt)
236 PARA_NOTICE_LOG("cleaning up receiver node\n");
237 btr_remove_node(&pt->rn.btrn);
238 afh_recv->close(&pt->rn);
239 afh_recv->free_config(pt->rn.conf);
240 memset(&pt->rn, 0, sizeof(struct receiver_node));
243 /* returns: 0 not eof, 1: eof, < 0: fatal error. */
244 static int get_playback_error(struct play_task *pt)
250 err = pt->wn.task->error;
253 if (pt->fn.task->error >= 0)
255 if (pt->rn.task->error >= 0)
257 if (err == -E_BTR_EOF || err == -E_RECV_EOF || err == -E_EOF
258 || err == -E_WRITE_COMMON_EOF)
263 static int eof_cleanup(struct play_task *pt)
265 struct writer *w = writers + DEFAULT_WRITER;
266 struct filter *decoder = filters + pt->fn.filter_num;
269 ret = get_playback_error(pt);
272 PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
273 task_reap(&pt->wn.task);
275 btr_remove_node(&pt->wn.btrn);
276 w->free_config(pt->wn.conf);
277 memset(&pt->wn, 0, sizeof(struct writer_node));
279 task_reap(&pt->fn.task);
280 decoder->close(&pt->fn);
281 btr_remove_node(&pt->fn.btrn);
283 memset(&pt->fn, 0, sizeof(struct filter_node));
285 task_reap(&pt->rn.task);
286 btr_remove_node(&pt->rn.btrn);
288 * On eof (ret > 0), we do not wipe the receiver node struct until a
289 * new file is loaded because we still need it for jumping around when
293 wipe_receiver_node(pt);
297 static int shuffle_compare(__a_unused const void *a, __a_unused const void *b)
299 return para_random(100) - 50;
302 static void shuffle(char **base, size_t num)
304 srandom(now->tv_sec);
305 qsort(base, num, sizeof(char *), shuffle_compare);
308 static struct btr_node *new_recv_btrn(struct receiver_node *rn)
310 return btr_new_node(&(struct btr_node_description)
311 EMBRACE(.name = afh_recv->name, .context = rn,
312 .handler = afh_recv->execute));
315 static int open_new_file(struct play_task *pt)
318 char *tmp, *path = conf.inputs[pt->next_file], *afh_recv_conf[] =
319 {"play", "-f", path, "-b", "0", NULL};
321 PARA_NOTICE_LOG("next file: %s\n", path);
322 wipe_receiver_node(pt);
324 pt->rn.btrn = new_recv_btrn(&pt->rn);
325 pt->rn.conf = afh_recv->parse_config(ARRAY_SIZE(afh_recv_conf) - 1,
328 pt->rn.receiver = afh_recv;
329 ret = afh_recv->open(&pt->rn);
331 PARA_ERROR_LOG("could not open %s: %s\n", path,
332 para_strerror(-ret));
335 pt->audio_format_num = ret;
337 ret = btr_exec_up(pt->rn.btrn, "afhi", &pt->afhi_txt);
339 pt->afhi_txt = make_message("[afhi command failed]\n");
340 ret = btr_exec_up(pt->rn.btrn, "seconds_total", &tmp);
345 ret = para_atoi32(tmp, &x);
346 pt->seconds = ret < 0? 1 : x;
350 ret = btr_exec_up(pt->rn.btrn, "chunks_total", &tmp);
355 ret = para_atoi32(tmp, &x);
356 pt->num_chunks = ret < 0? 1 : x;
362 wipe_receiver_node(pt);
366 static int load_file(struct play_task *pt)
371 struct filter *decoder;
373 btr_remove_node(&pt->rn.btrn);
374 if (!pt->rn.receiver || pt->next_file != pt->current_file) {
375 ret = open_new_file(pt);
379 pt->rn.btrn = new_recv_btrn(&pt->rn);
380 sprintf(buf, "repos %lu", pt->start_chunk);
381 ret = btr_exec_up(pt->rn.btrn, buf, &tmp);
383 PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret));
388 /* set up decoding filter */
389 af = audio_format_name(pt->audio_format_num);
390 tmp = make_message("%sdec", af);
391 ret = check_filter_arg(tmp, &pt->fn.conf);
395 pt->fn.filter_num = ret;
396 decoder = filters + ret;
397 pt->fn.btrn = btr_new_node(&(struct btr_node_description)
398 EMBRACE(.name = decoder->name, .parent = pt->rn.btrn,
399 .handler = decoder->execute, .context = &pt->fn));
400 decoder->open(&pt->fn);
402 /* setup default writer */
403 pt->wn.conf = check_writer_arg_or_die(NULL, &pt->wn.writer_num);
405 /* success, register tasks */
406 pt->rn.task = task_register(
407 &(struct task_info) {
408 .name = afh_recv->name,
409 .pre_select = afh_recv->pre_select,
410 .post_select = afh_recv->post_select,
413 sprintf(buf, "%s decoder", af);
414 pt->fn.task = task_register(
415 &(struct task_info) {
417 .pre_select = decoder->pre_select,
418 .post_select = decoder->post_select,
421 register_writer_node(&pt->wn, pt->fn.btrn, &sched);
424 wipe_receiver_node(pt);
428 static int next_valid_file(struct play_task *pt)
430 int i, j = pt->current_file;
432 FOR_EACH_PLAYLIST_FILE(i) {
433 j = (j + 1) % conf.inputs_num;
437 return -E_NO_VALID_FILES;
440 static int load_next_file(struct play_task *pt)
445 if (pt->rq == CRT_NONE) {
447 ret = next_valid_file(pt);
451 } else if (pt->rq == CRT_REPOS)
452 pt->next_file = pt->current_file;
455 pt->invalid[pt->next_file] = true;
459 pt->current_file = pt->next_file;
464 static void kill_stream(struct play_task *pt)
467 task_notify(pt->wn.task, E_EOF);
472 /* only called from com_prev(), nec. only if we have readline */
473 static int previous_valid_file(struct play_task *pt)
475 int i, j = pt->current_file;
477 FOR_EACH_PLAYLIST_FILE(i) {
480 j = conf.inputs_num - 1;
484 return -E_NO_VALID_FILES;
487 #include "interactive.h"
490 * Define the default (internal) key mappings and helper functions to get the
491 * key sequence or the command from a key id, which is what we obtain from
492 * i9e/readline when the key is pressed.
494 * In some of these helper functions we could return pointers to the constant
495 * arrays defined below. However, for others we can not, so let's better be
496 * consistent and allocate all returned strings on the heap.
499 #define INTERNAL_KEYMAP_ENTRIES \
500 KEYMAP_ENTRY("^", "jmp 0"), \
501 KEYMAP_ENTRY("1", "jmp 10"), \
502 KEYMAP_ENTRY("2", "jmp 21"), \
503 KEYMAP_ENTRY("3", "jmp 32"), \
504 KEYMAP_ENTRY("4", "jmp 43"), \
505 KEYMAP_ENTRY("5", "jmp 54"), \
506 KEYMAP_ENTRY("6", "jmp 65"), \
507 KEYMAP_ENTRY("7", "jmp 76"), \
508 KEYMAP_ENTRY("8", "jmp 87"), \
509 KEYMAP_ENTRY("9", "jmp 98"), \
510 KEYMAP_ENTRY("+", "next"), \
511 KEYMAP_ENTRY("-", "prev"), \
512 KEYMAP_ENTRY(":", "bg"), \
513 KEYMAP_ENTRY("i", "info"), \
514 KEYMAP_ENTRY("l", "ls"), \
515 KEYMAP_ENTRY("s", "play"), \
516 KEYMAP_ENTRY("p", "pause"), \
517 KEYMAP_ENTRY("q", "quit"), \
518 KEYMAP_ENTRY("?", "help"), \
519 KEYMAP_ENTRY("\033[D", "ff -10"), \
520 KEYMAP_ENTRY("\033[C", "ff 10"), \
521 KEYMAP_ENTRY("\033[A", "ff 60"), \
522 KEYMAP_ENTRY("\033[B", "ff -60"), \
524 #define KEYMAP_ENTRY(a, b) a
525 static const char *default_keyseqs[] = {INTERNAL_KEYMAP_ENTRIES};
527 #define KEYMAP_ENTRY(a, b) b
528 static const char *default_commands[] = {INTERNAL_KEYMAP_ENTRIES};
530 #define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
531 #define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + conf.key_map_given)
532 #define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
534 static inline bool is_internal_key(int key)
536 return key < NUM_INTERNALLY_MAPPED_KEYS;
539 /* for internal keys, the key id is just the array index. */
540 static inline int get_internal_key_map_idx(int key)
542 assert(is_internal_key(key));
547 * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
548 * difference is the index to the array of user defined key maps.
550 static inline int get_user_key_map_idx(int key)
552 assert(!is_internal_key(key));
553 return key - NUM_INTERNALLY_MAPPED_KEYS;
556 static inline int get_key_map_idx(int key)
558 return is_internal_key(key)?
559 get_internal_key_map_idx(key) : get_user_key_map_idx(key);
562 static inline char *get_user_key_map_arg(int key)
564 return conf.key_map_arg[get_user_key_map_idx(key)];
567 static inline char *get_internal_key_map_seq(int key)
569 return para_strdup(default_keyseqs[get_internal_key_map_idx(key)]);
572 static char *get_user_key_map_seq(int key)
574 const char *kma = get_user_key_map_arg(key);
575 const char *p = strchr(kma + 1, ':');
582 result = para_malloc(len + 1);
583 memcpy(result, kma, len);
588 static char *get_key_map_seq(int key)
590 return is_internal_key(key)?
591 get_internal_key_map_seq(key) : get_user_key_map_seq(key);
594 static inline char *get_internal_key_map_cmd(int key)
596 return para_strdup(default_commands[get_internal_key_map_idx(key)]);
599 static char *get_user_key_map_cmd(int key)
601 const char *kma = get_user_key_map_arg(key);
602 const char *p = strchr(kma + 1, ':');
606 return para_strdup(p + 1);
609 static char *get_key_map_cmd(int key)
611 return is_internal_key(key)?
612 get_internal_key_map_cmd(key) : get_user_key_map_cmd(key);
615 static char **get_mapped_keyseqs(void)
620 result = para_malloc((NUM_MAPPED_KEYS + 1) * sizeof(char *));
621 FOR_EACH_MAPPED_KEY(i) {
622 int idx = get_key_map_idx(i);
623 char *seq = get_key_map_seq(i);
624 char *cmd = get_key_map_cmd(i);
625 bool internal = is_internal_key(i);
626 PARA_DEBUG_LOG("%s key sequence #%d: %s -> %s\n",
627 internal? "internal" : "user-defined",
636 #include "play_completion.h"
639 /* defines one command of para_play */
642 int (*handler)(struct play_task *, int, char**);
643 const char *description;
648 #include "play_command_list.h"
649 static struct pp_command pp_cmds[] = {DEFINE_PLAY_CMD_ARRAY};
650 #define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
652 #include "play_completion.h"
653 static struct i9e_completer pp_completers[];
655 I9E_DUMMY_COMPLETER(jmp);
656 I9E_DUMMY_COMPLETER(next);
657 I9E_DUMMY_COMPLETER(prev);
658 I9E_DUMMY_COMPLETER(fg);
659 I9E_DUMMY_COMPLETER(bg);
660 I9E_DUMMY_COMPLETER(ls);
661 I9E_DUMMY_COMPLETER(info);
662 I9E_DUMMY_COMPLETER(play);
663 I9E_DUMMY_COMPLETER(pause);
664 I9E_DUMMY_COMPLETER(stop);
665 I9E_DUMMY_COMPLETER(tasks);
666 I9E_DUMMY_COMPLETER(quit);
667 I9E_DUMMY_COMPLETER(ff);
669 static void help_completer(struct i9e_completion_info *ci,
670 struct i9e_completion_result *result)
672 result->matches = i9e_complete_commands(ci->word, pp_completers);
675 static struct i9e_completer pp_completers[] = {PLAY_COMPLETERS {.name = NULL}};
677 static void attach_stdout(struct play_task *pt, const char *name)
681 pt->btrn = btr_new_node(&(struct btr_node_description)
682 EMBRACE(.name = name));
683 i9e_attach_to_stdout(pt->btrn);
686 static void detach_stdout(struct play_task *pt)
688 btr_remove_node(&pt->btrn);
691 static int com_quit(struct play_task *pt, int argc, __a_unused char **argv)
694 return -E_PLAY_SYNTAX;
695 pt->rq = CRT_TERM_RQ;
699 static int com_help(struct play_task *pt, int argc, char **argv)
706 return -E_PLAY_SYNTAX;
709 FOR_EACH_COMMAND(i) {
710 sz = xasprintf(&buf, "%s\t%s\n", pp_cmds[i].name,
711 pp_cmds[i].description);
712 btr_add_output(buf, sz, pt->btrn);
715 FOR_EACH_MAPPED_KEY(i) {
716 bool internal = is_internal_key(i);
717 int idx = get_key_map_idx(i);
718 char *seq = get_key_map_seq(i);
719 char *cmd = get_key_map_cmd(i);
721 "%s key #%d: %s -> %s\n",
722 internal? "internal" : "user-defined",
724 btr_add_output(buf, sz, pt->btrn);
731 FOR_EACH_COMMAND(i) {
732 if (strcmp(pp_cmds[i].name, argv[1]))
739 pp_cmds[i].description,
743 btr_add_output(buf, sz, pt->btrn);
746 return -E_BAD_PLAY_CMD;
749 static int com_info(struct play_task *pt, int argc, __a_unused char **argv)
753 static char dflt[] = "[no information available]";
756 return -E_PLAY_SYNTAX;
757 sz = xasprintf(&buf, "playlist_pos: %u\npath: %s\n",
758 pt->current_file, conf.inputs[pt->current_file]);
759 btr_add_output(buf, sz, pt->btrn);
760 buf = pt->afhi_txt? pt->afhi_txt : dflt;
761 btr_add_output_dont_free(buf, strlen(buf), pt->btrn);
765 static void list_file(struct play_task *pt, int num)
770 sz = xasprintf(&buf, "%s %4u %s\n", num == pt->current_file?
771 "*" : " ", num, conf.inputs[num]);
772 btr_add_output(buf, sz, pt->btrn);
775 static int com_tasks(struct play_task *pt, int argc, __a_unused char **argv)
782 return -E_PLAY_SYNTAX;
784 buf = get_task_list(&sched);
785 btr_add_output(buf, strlen(buf), pt->btrn);
786 state = get_playback_state(pt);
787 sz = xasprintf(&buf, "state: %c\n", state);
788 btr_add_output(buf, sz, pt->btrn);
792 static int com_ls(struct play_task *pt, int argc, char **argv)
797 FOR_EACH_PLAYLIST_FILE(i)
801 for (j = 1; j < argc; j++) {
802 FOR_EACH_PLAYLIST_FILE(i) {
803 ret = fnmatch(argv[j], conf.inputs[i], 0);
804 if (ret == 0) /* match */
811 static int com_play(struct play_task *pt, int argc, char **argv)
818 return -E_PLAY_SYNTAX;
819 state = get_playback_state(pt);
823 pt->next_file = pt->current_file;
828 ret = para_atoi32(argv[1], &x);
831 if (x < 0 || x >= conf.inputs_num)
832 return -ERRNO_TO_PARA_ERROR(EINVAL);
835 pt->rq = CRT_FILE_CHANGE;
839 static int com_pause(struct play_task *pt, int argc, __a_unused char **argv)
842 long unsigned seconds, ss;
845 return -E_PLAY_SYNTAX;
846 state = get_playback_state(pt);
850 seconds = get_play_time(pt);
854 ss = seconds * pt->num_chunks / pt->seconds + 1;
855 ss = PARA_MAX(ss, 0UL);
856 ss = PARA_MIN(ss, pt->num_chunks);
857 pt->start_chunk = ss;
862 static int com_prev(struct play_task *pt, int argc, __a_unused char **argv)
868 return -E_PLAY_SYNTAX;
869 ret = previous_valid_file(pt);
874 pt->rq = CRT_FILE_CHANGE;
878 static int com_next(struct play_task *pt, int argc, __a_unused char **argv)
883 return -E_PLAY_SYNTAX;
884 ret = next_valid_file(pt);
889 pt->rq = CRT_FILE_CHANGE;
893 static int com_fg(struct play_task *pt, int argc, __a_unused char **argv)
896 return -E_PLAY_SYNTAX;
897 pt->background = false;
901 static int com_bg(struct play_task *pt, int argc, __a_unused char **argv)
904 return -E_PLAY_SYNTAX;
905 pt->background = true;
909 static int com_jmp(struct play_task *pt, int argc, char **argv)
915 return -E_PLAY_SYNTAX;
916 ret = para_atoi32(argv[1], &percent);
919 if (percent < 0 || percent > 100)
920 return -ERRNO_TO_PARA_ERROR(EINVAL);
921 if (pt->playing && !pt->fn.btrn)
923 pt->start_chunk = percent * pt->num_chunks / 100;
931 static int com_ff(struct play_task *pt, int argc, char **argv)
937 return -E_PLAY_SYNTAX;
938 ret = para_atoi32(argv[1], &seconds);
941 if (pt->playing && !pt->fn.btrn)
943 seconds += get_play_time(pt);
944 seconds = PARA_MIN(seconds, (typeof(seconds))pt->seconds - 4);
945 seconds = PARA_MAX(seconds, 0);
946 pt->start_chunk = pt->num_chunks * seconds / pt->seconds;
947 pt->start_chunk = PARA_MIN(pt->start_chunk, pt->num_chunks - 1);
948 pt->start_chunk = PARA_MAX(pt->start_chunk, 0UL);
956 static int run_command(char *line, struct play_task *pt)
961 attach_stdout(pt, __FUNCTION__);
962 ret = create_argv(line, " ", &argv);
964 PARA_ERROR_LOG("parse error: %s\n", para_strerror(-ret));
970 FOR_EACH_COMMAND(i) {
971 if (strcmp(pp_cmds[i].name, argv[0]))
973 ret = pp_cmds[i].handler(pt, argc, argv);
975 PARA_WARNING_LOG("%s: %s\n", pt->background?
976 "" : argv[0], para_strerror(-ret));
980 PARA_WARNING_LOG("invalid command: %s\n", argv[0]);
987 static int play_i9e_line_handler(char *line)
989 return run_command(line, &play_task);
992 static int play_i9e_key_handler(int key)
994 struct play_task *pt = &play_task;
995 int idx = get_key_map_idx(key);
996 char *seq = get_key_map_seq(key);
997 char *cmd = get_key_map_cmd(key);
998 bool internal = is_internal_key(key);
1000 PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
1001 key, internal? "internal" : "user-defined",
1003 run_command(cmd, pt);
1006 pt->next_update = *now;
1010 static struct i9e_client_info ici = {
1012 .prompt = "para_play> ",
1013 .line_handler = play_i9e_line_handler,
1014 .key_handler = play_i9e_key_handler,
1015 .completers = pp_completers,
1018 static void sigint_handler(int sig)
1020 play_task.background = true;
1021 i9e_signal_dispatch(sig);
1025 * We start with para_log() set to the standard log function which writes to
1026 * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
1029 static void session_open(__a_unused struct play_task *pt)
1033 struct sigaction act;
1035 PARA_NOTICE_LOG("\n%s\n", version_text("play"));
1036 if (conf.history_file_given)
1037 history_file = para_strdup(conf.history_file_arg);
1039 char *home = para_homedir();
1040 history_file = make_message("%s/.paraslash/play.history",
1044 ici.history_file = history_file;
1045 ici.loglevel = loglevel;
1047 act.sa_handler = sigint_handler;
1048 sigemptyset(&act.sa_mask);
1050 sigaction(SIGINT, &act, NULL);
1051 act.sa_handler = i9e_signal_dispatch;
1052 sigemptyset(&act.sa_mask);
1054 sigaction(SIGWINCH, &act, NULL);
1055 sched.select_function = i9e_select;
1057 ici.bound_keyseqs = get_mapped_keyseqs();
1058 pt->btrn = ici.producer = btr_new_node(&(struct btr_node_description)
1059 EMBRACE(.name = __FUNCTION__));
1060 ret = i9e_open(&ici, &sched);
1069 PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret));
1073 static void session_update_time_string(struct play_task *pt, char *str, unsigned len)
1078 if (btr_get_output_queue_size(pt->btrn) > 0)
1080 if (btr_get_input_queue_size(pt->btrn) > 0)
1083 ie9_print_status_bar(str, len);
1087 * If we are about to die we must call i9e_close() to reset the terminal.
1088 * However, i9e_close() must be called in *this* context, i.e. from
1089 * play_task.post_select() rather than from i9e_post_select(), because
1090 * otherwise i9e would access freed memory upon return. So the play task must
1091 * stay alive until the i9e task terminates.
1093 * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
1094 * and reschedule. In the next iteration, i9e->post_select returns an error and
1095 * terminates. Subsequent calls to i9e_get_error() then return negative and we
1096 * are allowed to call i9e_close() and terminate as well.
1098 static int session_post_select(__a_unused struct sched *s, struct task *t)
1100 struct play_task *pt = task_context(t);
1106 attach_stdout(pt, __FUNCTION__);
1107 ret = i9e_get_error();
1111 para_log = stderr_log;
1112 free(ici.history_file);
1115 if (get_playback_state(pt) == 'X')
1116 i9e_signal_dispatch(SIGTERM);
1120 #else /* HAVE_READLINE */
1122 static int session_post_select(struct sched *s, struct task *t)
1124 struct play_task *pt = task_context(t);
1127 if (!FD_ISSET(STDIN_FILENO, &s->rfds))
1129 if (read(STDIN_FILENO, &c, 1))
1135 static void session_open(__a_unused struct play_task *pt)
1139 static void session_update_time_string(__a_unused struct play_task *pt,
1140 char *str, __a_unused unsigned len)
1142 printf("\r%s ", str);
1145 #endif /* HAVE_READLINE */
1147 static void play_pre_select(struct sched *s, struct task *t)
1149 struct play_task *pt = task_context(t);
1152 para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
1153 state = get_playback_state(pt);
1154 if (state == 'R' || state == 'F' || state == 'X')
1155 return sched_min_delay(s);
1156 sched_request_barrier_or_min_delay(&pt->next_update, s);
1159 static unsigned get_time_string(struct play_task *pt, char **result)
1161 int seconds, length;
1162 char state = get_playback_state(pt);
1164 /* do not return anything if things are about to change */
1165 if (state != 'P' && state != 'U') {
1169 length = pt->seconds;
1171 return xasprintf(result, "0:00 [0:00] (0%%/0:00)");
1172 seconds = get_play_time(pt);
1173 return xasprintf(result, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
1177 (length - seconds) / 60,
1178 (length - seconds) % 60,
1179 length? (seconds * 100 + length / 2) / length : 0,
1182 conf.inputs[pt->current_file]
1186 static int play_post_select(struct sched *s, struct task *t)
1188 struct play_task *pt = task_context(t);
1191 ret = eof_cleanup(pt);
1193 pt->rq = CRT_TERM_RQ;
1196 ret = session_post_select(s, t);
1199 if (!pt->wn.btrn && !pt->fn.btrn) {
1200 char state = get_playback_state(pt);
1201 if (state == 'P' || state == 'R' || state == 'F') {
1202 PARA_NOTICE_LOG("state: %c\n", state);
1203 ret = load_next_file(pt);
1205 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1206 pt->rq = CRT_TERM_RQ;
1210 pt->next_update = *now;
1213 if (tv_diff(now, &pt->next_update, NULL) >= 0) {
1215 unsigned len = get_time_string(pt, &str);
1216 struct timeval delay = {.tv_sec = 0, .tv_usec = 100 * 1000};
1218 session_update_time_string(pt, str, len);
1220 tv_add(now, &delay, &pt->next_update);
1228 * The main function of para_play.
1230 * \param argc Standard.
1231 * \param argv Standard.
1233 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
1235 int main(int argc, char *argv[])
1238 struct play_task *pt = &play_task;
1240 /* needed this early to make help work */
1245 clock_get_realtime(now);
1246 sched.default_timeout.tv_sec = 5;
1248 parse_config_or_die(argc, argv);
1249 if (conf.inputs_num == 0)
1250 print_help_and_die();
1251 check_afh_receiver_or_die();
1254 if (conf.randomize_given)
1255 shuffle(conf.inputs, conf.inputs_num);
1256 pt->invalid = para_calloc(sizeof(*pt->invalid) * conf.inputs_num);
1257 pt->rq = CRT_FILE_CHANGE;
1258 pt->current_file = conf.inputs_num - 1;
1260 pt->task = task_register(&(struct task_info){
1262 .pre_select = play_pre_select,
1263 .post_select = play_post_select,
1266 ret = schedule(&sched);
1267 sched_shutdown(&sched);
1269 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1270 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;