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 play_cmdline_parser_ext(argc, argv, &conf, ¶ms);
180 HANDLE_VERSION_FLAG("play", conf);
181 if (conf.help_given || conf.detailed_help_given)
182 print_help_and_die();
183 loglevel = get_loglevel_by_name(conf.loglevel_arg);
184 if (conf.config_file_given)
185 config_file = para_strdup(conf.config_file_arg);
187 char *home = para_homedir();
188 config_file = make_message("%s/.paraslash/play.conf", home);
191 ret = file_exists(config_file);
192 if (conf.config_file_given && !ret) {
193 PARA_EMERG_LOG("can not read config file %s\n", config_file);
197 params.initialize = 0;
198 params.check_required = 1;
199 play_cmdline_parser_config_file(config_file, &conf, ¶ms);
201 for (i = 0; i < conf.key_map_given; i++) {
202 char *s = strchr(conf.key_map_arg[i] + 1, ':');
205 PARA_EMERG_LOG("invalid key map arg: %s\n", conf.key_map_arg[i]);
215 static char get_playback_state(struct play_task *pt)
218 case CRT_NONE: return pt->playing? 'P' : 'U';
219 case CRT_REPOS: return 'R';
220 case CRT_FILE_CHANGE: return 'F';
221 case CRT_TERM_RQ: return 'X';
226 static long unsigned get_play_time(struct play_task *pt)
228 char state = get_playback_state(pt);
229 long unsigned result;
231 if (state != 'P' && state != 'U')
233 if (pt->num_chunks == 0 || pt->seconds == 0)
235 /* where the stream started (in seconds) */
236 result = pt->start_chunk * pt->seconds / pt->num_chunks;
237 if (pt->wn.btrn) { /* Add the uptime of the writer node */
238 struct timeval diff = {.tv_sec = 0}, wstime;
239 btr_get_node_start(pt->wn.btrn, &wstime);
240 if (wstime.tv_sec > 0)
241 tv_diff(now, &wstime, &diff);
242 result += diff.tv_sec;
244 result = PARA_MIN(result, pt->seconds);
245 result = PARA_MAX(result, 0UL);
249 static void wipe_receiver_node(struct play_task *pt)
251 PARA_NOTICE_LOG("cleaning up receiver node\n");
252 btr_remove_node(&pt->rn.btrn);
253 afh_recv->close(&pt->rn);
254 afh_recv->free_config(pt->rn.conf);
255 memset(&pt->rn, 0, sizeof(struct receiver_node));
258 /* returns: 0 not eof, 1: eof, < 0: fatal error. */
259 static int get_playback_error(struct play_task *pt)
261 int err = pt->wn.task.error;
265 if (pt->fn.task.error >= 0)
267 if (pt->rn.task.error >= 0)
269 if (err == -E_BTR_EOF || err == -E_RECV_EOF || err == -E_EOF
270 || err == -E_WRITE_COMMON_EOF)
275 static int eof_cleanup(struct play_task *pt)
277 struct writer *w = writers + DEFAULT_WRITER;
278 struct filter *decoder = filters + pt->fn.filter_num;
281 ret = get_playback_error(pt);
284 PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
286 btr_remove_node(&pt->wn.btrn);
287 w->free_config(pt->wn.conf);
288 memset(&pt->wn, 0, sizeof(struct writer_node));
290 decoder->close(&pt->fn);
291 btr_remove_node(&pt->fn.btrn);
293 memset(&pt->fn, 0, sizeof(struct filter_node));
295 btr_remove_node(&pt->rn.btrn);
297 * On eof (ret > 0), we do not wipe the receiver node struct until a
298 * new file is loaded because we still need it for jumping around when
302 wipe_receiver_node(pt);
306 static int shuffle_compare(__a_unused const void *a, __a_unused const void *b)
308 return para_random(100) - 50;
311 static void shuffle(char **base, size_t num)
313 srandom(now->tv_sec);
314 qsort(base, num, sizeof(char *), shuffle_compare);
317 static struct btr_node *new_recv_btrn(struct receiver_node *rn)
319 return btr_new_node(&(struct btr_node_description)
320 EMBRACE(.name = afh_recv->name, .context = rn,
321 .handler = afh_recv->execute));
324 static int open_new_file(struct play_task *pt)
327 char *tmp, *path = conf.inputs[pt->next_file], *afh_recv_conf[] =
328 {"play", "-f", path, "-b", "0", NULL};
330 PARA_NOTICE_LOG("next file: %s\n", path);
331 wipe_receiver_node(pt);
333 pt->rn.btrn = new_recv_btrn(&pt->rn);
334 pt->rn.conf = afh_recv->parse_config(ARRAY_SIZE(afh_recv_conf) - 1,
337 pt->rn.receiver = afh_recv;
338 ret = afh_recv->open(&pt->rn);
340 PARA_ERROR_LOG("could not open %s: %s\n", path,
341 para_strerror(-ret));
344 pt->audio_format_num = ret;
346 ret = btr_exec_up(pt->rn.btrn, "afhi", &pt->afhi_txt);
348 pt->afhi_txt = make_message("[afhi command failed]\n");
349 ret = btr_exec_up(pt->rn.btrn, "seconds_total", &tmp);
354 ret = para_atoi32(tmp, &x);
355 pt->seconds = ret < 0? 1 : x;
359 ret = btr_exec_up(pt->rn.btrn, "chunks_total", &tmp);
364 ret = para_atoi32(tmp, &x);
365 pt->num_chunks = ret < 0? 1 : x;
369 pt->rn.task.pre_select = afh_recv->pre_select;
370 pt->rn.task.post_select = afh_recv->post_select;
371 sprintf(pt->rn.task.status, "%s receiver node", afh_recv->name);
374 wipe_receiver_node(pt);
378 static int load_file(struct play_task *pt)
383 struct filter *decoder;
385 btr_remove_node(&pt->rn.btrn);
386 if (!pt->rn.receiver || pt->next_file != pt->current_file) {
387 ret = open_new_file(pt);
392 pt->rn.btrn = new_recv_btrn(&pt->rn);
393 sprintf(buf, "repos %lu", pt->start_chunk);
394 ret = btr_exec_up(pt->rn.btrn, buf, &tmp);
396 PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret));
401 /* set up decoding filter */
402 af = audio_format_name(pt->audio_format_num);
403 tmp = make_message("%sdec", af);
404 ret = check_filter_arg(tmp, &pt->fn.conf);
408 pt->fn.filter_num = ret;
409 decoder = filters + ret;
410 pt->fn.task.pre_select = decoder->pre_select;
411 pt->fn.task.post_select = decoder->post_select;
412 sprintf(pt->fn.task.status, "%s decoder", af);
413 pt->fn.btrn = btr_new_node(&(struct btr_node_description)
414 EMBRACE(.name = decoder->name, .parent = pt->rn.btrn,
415 .handler = decoder->execute, .context = &pt->fn));
416 decoder->open(&pt->fn);
418 /* setup default writer */
419 pt->wn.conf = check_writer_arg_or_die(NULL, &pt->wn.writer_num);
420 pt->wn.task.error = 0;
422 /* success, register tasks */
423 register_task(&sched, &pt->rn.task);
424 register_task(&sched, &pt->fn.task);
425 register_writer_node(&pt->wn, pt->fn.btrn, &sched);
428 wipe_receiver_node(pt);
432 static int next_valid_file(struct play_task *pt)
434 int i, j = pt->current_file;
436 FOR_EACH_PLAYLIST_FILE(i) {
437 j = (j + 1) % conf.inputs_num;
441 return -E_NO_VALID_FILES;
444 static int load_next_file(struct play_task *pt)
449 if (pt->rq == CRT_NONE || pt->rq == CRT_FILE_CHANGE) {
451 ret = next_valid_file(pt);
455 } else if (pt->rq == CRT_REPOS)
456 pt->next_file = pt->current_file;
459 pt->invalid[pt->next_file] = true;
463 pt->current_file = pt->next_file;
468 static void kill_stream(struct play_task *pt)
470 task_notify(&pt->wn.task, E_EOF);
475 /* only called from com_prev(), nec. only if we have readline */
476 static int previous_valid_file(struct play_task *pt)
478 int i, j = pt->current_file;
480 FOR_EACH_PLAYLIST_FILE(i) {
483 j = conf.inputs_num - 1;
487 return -E_NO_VALID_FILES;
490 #include "interactive.h"
493 * Define the default (internal) key mappings and helper functions to get the
494 * key sequence or the command from a key id, which is what we obtain from
495 * i9e/readline when the key is pressed.
497 * In some of these helper functions we could return pointers to the constant
498 * arrays defined below. However, for others we can not, so let's better be
499 * consistent and allocate all returned strings on the heap.
502 #define INTERNAL_KEYMAP_ENTRIES \
503 KEYMAP_ENTRY("^", "jmp 0"), \
504 KEYMAP_ENTRY("1", "jmp 10"), \
505 KEYMAP_ENTRY("2", "jmp 21"), \
506 KEYMAP_ENTRY("3", "jmp 32"), \
507 KEYMAP_ENTRY("4", "jmp 43"), \
508 KEYMAP_ENTRY("5", "jmp 54"), \
509 KEYMAP_ENTRY("6", "jmp 65"), \
510 KEYMAP_ENTRY("7", "jmp 76"), \
511 KEYMAP_ENTRY("8", "jmp 87"), \
512 KEYMAP_ENTRY("9", "jmp 98"), \
513 KEYMAP_ENTRY("+", "next"), \
514 KEYMAP_ENTRY("-", "prev"), \
515 KEYMAP_ENTRY(":", "bg"), \
516 KEYMAP_ENTRY("i", "info"), \
517 KEYMAP_ENTRY("l", "ls"), \
518 KEYMAP_ENTRY("s", "play"), \
519 KEYMAP_ENTRY("p", "pause"), \
520 KEYMAP_ENTRY("q", "quit"), \
521 KEYMAP_ENTRY("?", "help"), \
522 KEYMAP_ENTRY("\033[D", "ff -10"), \
523 KEYMAP_ENTRY("\033[C", "ff 10"), \
524 KEYMAP_ENTRY("\033[A", "ff 60"), \
525 KEYMAP_ENTRY("\033[B", "ff -60"), \
527 #define KEYMAP_ENTRY(a, b) a
528 static const char *default_keyseqs[] = {INTERNAL_KEYMAP_ENTRIES};
530 #define KEYMAP_ENTRY(a, b) b
531 static const char *default_commands[] = {INTERNAL_KEYMAP_ENTRIES};
533 #define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
534 #define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + conf.key_map_given)
535 #define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
537 static inline bool is_internal_key(int key)
539 return key < NUM_INTERNALLY_MAPPED_KEYS;
542 /* for internal keys, the key id is just the array index. */
543 static inline int get_internal_key_map_idx(int key)
545 assert(is_internal_key(key));
550 * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
551 * difference is the index to the array of user defined key maps.
553 static inline int get_user_key_map_idx(int key)
555 assert(!is_internal_key(key));
556 return key - NUM_INTERNALLY_MAPPED_KEYS;
559 static inline int get_key_map_idx(int key)
561 return is_internal_key(key)?
562 get_internal_key_map_idx(key) : get_user_key_map_idx(key);
565 static inline char *get_user_key_map_arg(int key)
567 return conf.key_map_arg[get_user_key_map_idx(key)];
570 static inline char *get_internal_key_map_seq(int key)
572 return para_strdup(default_keyseqs[get_internal_key_map_idx(key)]);
575 static char *get_user_key_map_seq(int key)
577 const char *kma = get_user_key_map_arg(key);
578 const char *p = strchr(kma + 1, ':');
585 result = para_malloc(len + 1);
586 memcpy(result, kma, len);
591 static char *get_key_map_seq(int key)
593 return is_internal_key(key)?
594 get_internal_key_map_seq(key) : get_user_key_map_seq(key);
597 static inline char *get_internal_key_map_cmd(int key)
599 return para_strdup(default_commands[get_internal_key_map_idx(key)]);
602 static char *get_user_key_map_cmd(int key)
604 const char *kma = get_user_key_map_arg(key);
605 const char *p = strchr(kma + 1, ':');
609 return para_strdup(p + 1);
612 static char *get_key_map_cmd(int key)
614 return is_internal_key(key)?
615 get_internal_key_map_cmd(key) : get_user_key_map_cmd(key);
618 static char **get_mapped_keyseqs(void)
623 result = para_malloc((NUM_MAPPED_KEYS + 1) * sizeof(char *));
624 FOR_EACH_MAPPED_KEY(i) {
625 int idx = get_key_map_idx(i);
626 char *seq = get_key_map_seq(i);
627 char *cmd = get_key_map_cmd(i);
628 bool internal = is_internal_key(i);
629 PARA_DEBUG_LOG("%s key sequence #%d: %s -> %s\n",
630 internal? "internal" : "user-defined",
639 #include "play_completion.h"
642 /* defines one command of para_play */
645 int (*handler)(struct play_task *, int, char**);
646 const char *description;
651 #include "play_command_list.h"
652 static struct pp_command pp_cmds[] = {DEFINE_PLAY_CMD_ARRAY};
653 #define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
655 #include "play_completion.h"
656 static struct i9e_completer pp_completers[];
658 I9E_DUMMY_COMPLETER(jmp);
659 I9E_DUMMY_COMPLETER(next);
660 I9E_DUMMY_COMPLETER(prev);
661 I9E_DUMMY_COMPLETER(fg);
662 I9E_DUMMY_COMPLETER(bg);
663 I9E_DUMMY_COMPLETER(ls);
664 I9E_DUMMY_COMPLETER(info);
665 I9E_DUMMY_COMPLETER(play);
666 I9E_DUMMY_COMPLETER(pause);
667 I9E_DUMMY_COMPLETER(stop);
668 I9E_DUMMY_COMPLETER(tasks);
669 I9E_DUMMY_COMPLETER(quit);
670 I9E_DUMMY_COMPLETER(ff);
672 static void help_completer(struct i9e_completion_info *ci,
673 struct i9e_completion_result *result)
675 result->matches = i9e_complete_commands(ci->word, pp_completers);
678 static struct i9e_completer pp_completers[] = {PLAY_COMPLETERS {.name = NULL}};
680 static void attach_stdout(struct play_task *pt, const char *name)
684 pt->btrn = btr_new_node(&(struct btr_node_description)
685 EMBRACE(.name = name));
686 i9e_attach_to_stdout(pt->btrn);
689 static void detach_stdout(struct play_task *pt)
691 btr_remove_node(&pt->btrn);
694 static int com_quit(struct play_task *pt, int argc, __a_unused char **argv)
697 return -E_PLAY_SYNTAX;
698 pt->rq = CRT_TERM_RQ;
702 static int com_help(struct play_task *pt, int argc, char **argv)
709 return -E_PLAY_SYNTAX;
712 FOR_EACH_COMMAND(i) {
713 sz = xasprintf(&buf, "%s\t%s\n", pp_cmds[i].name,
714 pp_cmds[i].description);
715 btr_add_output(buf, sz, pt->btrn);
718 FOR_EACH_MAPPED_KEY(i) {
719 bool internal = is_internal_key(i);
720 int idx = get_key_map_idx(i);
721 char *seq = get_key_map_seq(i);
722 char *cmd = get_key_map_cmd(i);
724 "%s key #%d: %s -> %s\n",
725 internal? "internal" : "user-defined",
727 btr_add_output(buf, sz, pt->btrn);
734 FOR_EACH_COMMAND(i) {
735 if (strcmp(pp_cmds[i].name, argv[1]))
742 pp_cmds[i].description,
746 btr_add_output(buf, sz, pt->btrn);
749 return -E_BAD_PLAY_CMD;
752 static int com_info(struct play_task *pt, int argc, __a_unused char **argv)
756 static char dflt[] = "[no information available]";
759 return -E_PLAY_SYNTAX;
760 sz = xasprintf(&buf, "playlist_pos: %u\npath: %s\n",
761 pt->current_file, conf.inputs[pt->current_file]);
762 btr_add_output(buf, sz, pt->btrn);
763 buf = pt->afhi_txt? pt->afhi_txt : dflt;
764 btr_add_output_dont_free(buf, strlen(buf), pt->btrn);
768 static void list_file(struct play_task *pt, int num)
773 sz = xasprintf(&buf, "%s %4u %s\n", num == pt->current_file?
774 "*" : " ", num, conf.inputs[num]);
775 btr_add_output(buf, sz, pt->btrn);
778 static int com_tasks(struct play_task *pt, int argc, __a_unused char **argv)
785 return -E_PLAY_SYNTAX;
787 buf = get_task_list(&sched);
788 btr_add_output(buf, strlen(buf), pt->btrn);
789 state = get_playback_state(pt);
790 sz = xasprintf(&buf, "state: %c\n", state);
791 btr_add_output(buf, sz, pt->btrn);
795 static int com_ls(struct play_task *pt, int argc, char **argv)
800 FOR_EACH_PLAYLIST_FILE(i)
804 for (j = 1; j < argc; j++) {
805 FOR_EACH_PLAYLIST_FILE(i) {
806 ret = fnmatch(argv[j], conf.inputs[i], 0);
807 if (ret == 0) /* match */
814 static int com_play(struct play_task *pt, int argc, char **argv)
821 return -E_PLAY_SYNTAX;
822 state = get_playback_state(pt);
826 pt->next_file = pt->current_file;
831 ret = para_atoi32(argv[1], &x);
834 if (x < 0 || x >= conf.inputs_num)
835 return -ERRNO_TO_PARA_ERROR(EINVAL);
838 pt->rq = CRT_FILE_CHANGE;
842 static int com_pause(struct play_task *pt, int argc, __a_unused char **argv)
845 long unsigned seconds, ss;
848 return -E_PLAY_SYNTAX;
849 state = get_playback_state(pt);
853 seconds = get_play_time(pt);
857 ss = seconds * pt->num_chunks / pt->seconds + 1;
858 ss = PARA_MAX(ss, 0UL);
859 ss = PARA_MIN(ss, pt->num_chunks);
860 pt->start_chunk = ss;
865 static int com_prev(struct play_task *pt, int argc, __a_unused char **argv)
871 return -E_PLAY_SYNTAX;
872 ret = previous_valid_file(pt);
877 pt->rq = CRT_FILE_CHANGE;
881 static int com_next(struct play_task *pt, int argc, __a_unused char **argv)
886 return -E_PLAY_SYNTAX;
887 ret = next_valid_file(pt);
892 pt->rq = CRT_FILE_CHANGE;
896 static int com_fg(struct play_task *pt, int argc, __a_unused char **argv)
899 return -E_PLAY_SYNTAX;
900 pt->background = false;
904 static int com_bg(struct play_task *pt, int argc, __a_unused char **argv)
907 return -E_PLAY_SYNTAX;
908 pt->background = true;
912 static int com_jmp(struct play_task *pt, int argc, char **argv)
918 return -E_PLAY_SYNTAX;
919 ret = para_atoi32(argv[1], &percent);
922 if (percent < 0 || percent > 100)
923 return -ERRNO_TO_PARA_ERROR(EINVAL);
924 if (pt->playing && !pt->fn.btrn)
926 pt->start_chunk = percent * pt->num_chunks / 100;
934 static int com_ff(struct play_task *pt, int argc, char **argv)
940 return -E_PLAY_SYNTAX;
941 ret = para_atoi32(argv[1], &seconds);
944 if (pt->playing && !pt->fn.btrn)
946 seconds += get_play_time(pt);
947 seconds = PARA_MIN(seconds, (typeof(seconds))pt->seconds - 4);
948 seconds = PARA_MAX(seconds, 0);
949 pt->start_chunk = pt->num_chunks * seconds / pt->seconds;
950 pt->start_chunk = PARA_MIN(pt->start_chunk, pt->num_chunks - 1);
951 pt->start_chunk = PARA_MAX(pt->start_chunk, 0UL);
959 static int run_command(char *line, struct play_task *pt)
964 attach_stdout(pt, __FUNCTION__);
965 ret = create_argv(line, " ", &argv);
967 PARA_ERROR_LOG("parse error: %s\n", para_strerror(-ret));
973 FOR_EACH_COMMAND(i) {
974 if (strcmp(pp_cmds[i].name, argv[0]))
976 ret = pp_cmds[i].handler(pt, argc, argv);
978 PARA_WARNING_LOG("%s: %s\n", pt->background?
979 "" : argv[0], para_strerror(-ret));
983 PARA_WARNING_LOG("invalid command: %s\n", argv[0]);
990 static int play_i9e_line_handler(char *line)
992 struct play_task *pt = &play_task;
995 if (line == NULL || !*line)
997 ret = run_command(line, pt);
1003 static int play_i9e_key_handler(int key)
1005 struct play_task *pt = &play_task;
1006 int idx = get_key_map_idx(key);
1007 char *seq = get_key_map_seq(key);
1008 char *cmd = get_key_map_cmd(key);
1009 bool internal = is_internal_key(key);
1011 PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
1012 key, internal? "internal" : "user-defined",
1014 run_command(cmd, pt);
1017 pt->next_update = *now;
1021 static struct i9e_client_info ici = {
1023 .prompt = "para_play> ",
1024 .line_handler = play_i9e_line_handler,
1025 .key_handler = play_i9e_key_handler,
1026 .completers = pp_completers,
1029 static void sigint_handler(int sig)
1031 play_task.background = true;
1032 i9e_signal_dispatch(sig);
1036 * We start with para_log() set to the standard log function which writes to
1037 * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
1040 static void session_open(__a_unused struct play_task *pt)
1044 struct sigaction act;
1046 PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("play"));
1047 if (conf.history_file_given)
1048 history_file = para_strdup(conf.history_file_arg);
1050 char *home = para_homedir();
1051 history_file = make_message("%s/.paraslash/play.history",
1055 ici.history_file = history_file;
1056 ici.loglevel = loglevel;
1058 act.sa_handler = sigint_handler;
1059 sigemptyset(&act.sa_mask);
1061 sigaction(SIGINT, &act, NULL);
1062 act.sa_handler = i9e_signal_dispatch;
1063 sigemptyset(&act.sa_mask);
1065 sigaction(SIGWINCH, &act, NULL);
1066 sched.select_function = i9e_select;
1068 ici.bound_keyseqs = get_mapped_keyseqs();
1069 pt->btrn = ici.producer = btr_new_node(&(struct btr_node_description)
1070 EMBRACE(.name = __FUNCTION__));
1071 ret = i9e_open(&ici, &sched);
1080 PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret));
1084 static void session_update_time_string(struct play_task *pt, char *str, unsigned len)
1089 if (btr_get_output_queue_size(pt->btrn) > 0)
1091 if (btr_get_input_queue_size(pt->btrn) > 0)
1094 ie9_print_status_bar(str, len);
1098 * If we are about to die we must call i9e_close() to reset the terminal.
1099 * However, i9e_close() must be called in *this* context, i.e. from
1100 * play_task.post_select() rather than from i9e_post_select(), because
1101 * otherwise i9e would access freed memory upon return. So the play task must
1102 * stay alive until the i9e task terminates.
1104 * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
1105 * and reschedule. In the next iteration, i9e->post_select returns an error and
1106 * terminates. Subsequent calls to i9e_get_error() then return negative and we
1107 * are allowed to call i9e_close() and terminate as well.
1109 static int session_post_select(__a_unused struct sched *s, struct task *t)
1111 struct play_task *pt = container_of(t, struct play_task, task);
1117 attach_stdout(pt, __FUNCTION__);
1118 ret = i9e_get_error();
1122 para_log = stderr_log;
1123 free(ici.history_file);
1126 if (get_playback_state(pt) == 'X')
1127 i9e_signal_dispatch(SIGTERM);
1131 #else /* HAVE_READLINE */
1133 static int session_post_select(struct sched *s, struct task *t)
1135 struct play_task *pt = container_of(t, struct play_task, task);
1138 if (!FD_ISSET(STDIN_FILENO, &s->rfds))
1140 if (read(STDIN_FILENO, &c, 1))
1146 static void session_open(__a_unused struct play_task *pt)
1150 static void session_update_time_string(__a_unused struct play_task *pt,
1151 char *str, __a_unused unsigned len)
1153 printf("\r%s ", str);
1156 #endif /* HAVE_READLINE */
1158 static void play_pre_select(struct sched *s, struct task *t)
1160 struct play_task *pt = container_of(t, struct play_task, task);
1163 para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
1164 state = get_playback_state(pt);
1165 if (state == 'R' || state == 'F' || state == 'X')
1166 return sched_min_delay(s);
1167 sched_request_barrier_or_min_delay(&pt->next_update, s);
1170 static unsigned get_time_string(struct play_task *pt, char **result)
1172 int seconds, length;
1173 char state = get_playback_state(pt);
1175 /* do not return anything if things are about to change */
1176 if (state != 'P' && state != 'U') {
1180 length = pt->seconds;
1182 return xasprintf(result, "0:00 [0:00] (0%%/0:00)");
1183 seconds = get_play_time(pt);
1184 return xasprintf(result, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
1188 (length - seconds) / 60,
1189 (length - seconds) % 60,
1190 length? (seconds * 100 + length / 2) / length : 0,
1193 conf.inputs[pt->current_file]
1197 static int play_post_select(struct sched *s, struct task *t)
1199 struct play_task *pt = container_of(t, struct play_task, task);
1202 ret = eof_cleanup(pt);
1204 pt->rq = CRT_TERM_RQ;
1207 ret = session_post_select(s, t);
1210 if (!pt->wn.btrn && !pt->fn.btrn) {
1211 char state = get_playback_state(pt);
1212 if (state == 'P' || state == 'R' || state == 'F') {
1213 PARA_NOTICE_LOG("state: %c\n", state);
1214 ret = load_next_file(pt);
1216 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1217 pt->rq = CRT_TERM_RQ;
1221 pt->next_update = *now;
1224 if (tv_diff(now, &pt->next_update, NULL) >= 0) {
1226 unsigned len = get_time_string(pt, &str);
1227 struct timeval delay = {.tv_sec = 0, .tv_usec = 100 * 1000};
1229 session_update_time_string(pt, str, len);
1231 tv_add(now, &delay, &pt->next_update);
1239 * The main function of para_play.
1241 * \param argc Standard.
1242 * \param argv Standard.
1244 * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
1246 int main(int argc, char *argv[])
1249 struct play_task *pt = &play_task;
1251 /* needed this early to make help work */
1256 clock_get_realtime(now);
1257 sched.default_timeout.tv_sec = 5;
1259 parse_config_or_die(argc, argv);
1260 if (conf.inputs_num == 0)
1261 print_help_and_die();
1262 check_afh_receiver_or_die();
1265 if (conf.randomize_given)
1266 shuffle(conf.inputs, conf.inputs_num);
1267 pt->invalid = para_calloc(sizeof(*pt->invalid) * conf.inputs_num);
1268 pt->rq = CRT_FILE_CHANGE;
1269 pt->current_file = conf.inputs_num - 1;
1271 pt->task.pre_select = play_pre_select;
1272 pt->task.post_select = play_post_select;
1273 sprintf(pt->task.status, "play task");
1274 register_task(&sched, &pt->task);
1275 ret = schedule(&sched);
1277 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
1278 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;