+ ret = mmap_full_file(cf, O_RDONLY, &map, &sz, NULL);
+ if (ret < 0) {
+ if (ret != -E_EMPTY && ret != -ERRNO_TO_PARA_ERROR(ENOENT))
+ goto free_cf;
+ if (ret == -ERRNO_TO_PARA_ERROR(ENOENT) && OPT_GIVEN(CONFIG_FILE))
+ goto free_cf;
+ ret = 0;
+ goto setup_keymap;
+ }
+ ret = lls(lls_convert_config(map, sz, NULL, &cf_argv, &errctx));
+ para_munmap(map, sz);
+ if (ret < 0)
+ goto free_cf;
+ cf_argc = ret;
+ ret = lls(lls_parse(cf_argc, cf_argv, cmd, &cf_lpr, &errctx));
+ lls_free_argv(cf_argv);
+ if (ret < 0)
+ goto free_cf;
+ ret = lls(lls_merge(play_lpr, cf_lpr, cmd, &merged_lpr, &errctx));
+ lls_free_parse_result(cf_lpr, cmd);
+ if (ret < 0)
+ goto free_cf;
+ lls_free_parse_result(play_lpr, cmd);
+ play_lpr = merged_lpr;
+ loglevel = OPT_UINT32_VAL(LOGLEVEL);
+setup_keymap:
+ num_kmas = OPT_GIVEN(KEY_MAP);
+ for (i = 0; i < num_kmas; i++) {
+ const char *kma = lls_string_val(i, OPT_RESULT(KEY_MAP));
+ if (*kma && strchr(kma + 1, ':'))
+ continue;
+ PARA_EMERG_LOG("invalid key map arg: %s\n", kma);
+ goto free_cf;
+ }
+ ret = 1;
+free_cf:
+ free(cf);
+ if (ret >= 0)
+ return;
+ lls_free_parse_result(play_lpr, cmd);
+fail:
+ if (errctx)
+ PARA_EMERG_LOG("%s\n", errctx);
+ free(errctx);
+ PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+ exit(EXIT_FAILURE);
+}
+
+static char get_playback_state(void)
+{
+ switch (pt->rq) {
+ case CRT_NONE: return pt->playing? 'P' : 'U';
+ case CRT_REPOS: return 'R';
+ case CRT_FILE_CHANGE: return 'F';
+ case CRT_TERM_RQ: return 'X';
+ }
+ assert(false);
+};
+
+static long unsigned get_play_time(void)
+{
+ char state = get_playback_state();
+ long unsigned result;
+
+ if (state != 'P' && state != 'U')
+ return 0;
+ if (pt->num_chunks == 0 || pt->seconds == 0)
+ return 0;
+ /* where the stream started (in seconds) */
+ result = pt->start_chunk * pt->seconds / pt->num_chunks;
+ if (pt->wn.btrn) { /* Add the uptime of the writer node */
+ struct timeval diff = {.tv_sec = 0}, wstime;
+ btr_get_node_start(pt->wn.btrn, &wstime);
+ if (wstime.tv_sec > 0)
+ tv_diff(now, &wstime, &diff);
+ result += diff.tv_sec;
+ }
+ result = PARA_MIN(result, pt->seconds);
+ result = PARA_MAX(result, 0UL);
+ return result;
+}
+
+
+static void wipe_receiver_node(void)
+{
+ PARA_NOTICE_LOG("cleaning up receiver node\n");
+ btr_remove_node(&pt->rn.btrn);
+ AFH_RECV->close(&pt->rn);
+ lls_free_parse_result(pt->rn.lpr, AFH_RECV_CMD);
+ memset(&pt->rn, 0, sizeof(struct receiver_node));
+}
+
+/* returns: 0 not eof, 1: eof, < 0: fatal error. */
+static int get_playback_error(void)
+{
+ int err;
+
+ if (!pt->wn.task)
+ return 0;
+ err = task_status(pt->wn.task);
+ if (err >= 0)
+ return 0;
+ if (task_status(pt->fn.task) >= 0)
+ return 0;
+ if (task_status(pt->rn.task) >= 0)
+ return 0;
+ if (err == -E_BTR_EOF || err == -E_RECV_EOF || err == -E_EOF
+ || err == -E_WRITE_COMMON_EOF)
+ return 1;
+ return err;
+}
+
+static int eof_cleanup(void)
+{
+ const struct filter *decoder;
+ const struct writer *w = writer_get(-1); /* default writer */
+ int ret;
+
+ ret = get_playback_error();
+ if (ret == 0)
+ return ret;
+ PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
+ task_reap(&pt->wn.task);
+ w->close(&pt->wn);
+ btr_remove_node(&pt->wn.btrn);
+ lls_free_parse_result(pt->wn.lpr, WRITE_CMD(pt->wn.wid));
+ memset(&pt->wn, 0, sizeof(struct writer_node));
+
+ decoder = filter_get(pt->fn.filter_num);
+ task_reap(&pt->fn.task);
+ if (decoder->close)
+ decoder->close(&pt->fn);
+ btr_remove_node(&pt->fn.btrn);
+ free(pt->fn.conf);
+ memset(&pt->fn, 0, sizeof(struct filter_node));
+
+ task_reap(&pt->rn.task);
+ btr_remove_node(&pt->rn.btrn);
+ /*
+ * On eof (ret > 0), we do not wipe the receiver node struct until a
+ * new file is loaded because we still need it for jumping around when
+ * paused.
+ */
+ if (ret < 0)
+ wipe_receiver_node();
+ return ret;
+}
+
+static int shuffle_compare(__a_unused const void *a, __a_unused const void *b)
+{
+ return para_random(100) - 50;
+}
+
+static void init_shuffle_map(void)
+{
+ unsigned n, num_inputs = lls_num_inputs(play_lpr);
+ shuffle_map = para_malloc(num_inputs * sizeof(unsigned));
+ for (n = 0; n < num_inputs; n++)
+ shuffle_map[n] = n;
+ if (!OPT_GIVEN(RANDOMIZE))
+ return;
+ srandom(time(NULL));
+ qsort(shuffle_map, num_inputs, sizeof(unsigned), shuffle_compare);
+}
+
+static struct btr_node *new_recv_btrn(struct receiver_node *rn)
+{
+ return btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = lls_command_name(AFH_RECV_CMD), .context = rn,
+ .handler = AFH_RECV->execute));
+}
+
+static int open_new_file(void)
+{
+ int ret;
+ const char *path = get_playlist_file(pt->next_file);
+ char *tmp = para_strdup(path), *errctx;
+ char *argv[] = {"play", "-f", tmp, "-b", "0", NULL};
+
+ PARA_NOTICE_LOG("next file: %s\n", path);
+ wipe_receiver_node();
+ pt->start_chunk = 0;
+ pt->rn.btrn = new_recv_btrn(&pt->rn);
+ ret = lls(lls_parse(ARRAY_SIZE(argv) - 1, argv, AFH_RECV_CMD,
+ &pt->rn.lpr, &errctx));
+ free(tmp);
+ assert(ret >= 0);
+ pt->rn.receiver = AFH_RECV;
+ ret = AFH_RECV->open(&pt->rn);
+ if (ret < 0) {
+ PARA_ERROR_LOG("could not open %s\n", path);
+ goto fail;
+ }
+ pt->audio_format_num = ret;
+ free(pt->afhi_txt);
+ ret = btr_exec_up(pt->rn.btrn, "afhi", &pt->afhi_txt);
+ if (ret < 0)
+ pt->afhi_txt = make_message("[afhi command failed]\n");
+ ret = btr_exec_up(pt->rn.btrn, "seconds_total", &tmp);
+ if (ret < 0)
+ pt->seconds = 1;
+ else {
+ int32_t x;
+ ret = para_atoi32(tmp, &x);
+ pt->seconds = ret < 0? 1 : x;
+ free(tmp);
+ tmp = NULL;
+ }
+ ret = btr_exec_up(pt->rn.btrn, "chunks_total", &tmp);
+ if (ret < 0)
+ pt->num_chunks = 1;
+ else {
+ int32_t x;
+ ret = para_atoi32(tmp, &x);
+ pt->num_chunks = ret < 0? 1 : x;
+ free(tmp);
+ tmp = NULL;
+ }
+ return 1;
+fail:
+ wipe_receiver_node();
+ return ret;
+}
+
+static int load_file(void)
+{
+ const char *af;
+ char *tmp, buf[20];
+ int ret;
+ const struct filter *decoder;
+ static struct lls_parse_result *filter_lpr, *writer_lpr;
+
+ btr_remove_node(&pt->rn.btrn);
+ if (!pt->rn.receiver || pt->next_file != pt->current_file) {
+ ret = open_new_file();
+ if (ret < 0)
+ return ret;
+ } else {
+ pt->rn.btrn = new_recv_btrn(&pt->rn);
+ sprintf(buf, "repos %lu", pt->start_chunk);
+ ret = btr_exec_up(pt->rn.btrn, buf, &tmp);
+ if (ret < 0)
+ PARA_CRIT_LOG("repos failed: %s\n", para_strerror(-ret));
+ freep(&tmp);
+ }
+ if (!pt->playing)
+ return 0;
+ /* set up decoding filter */
+ af = audio_format_name(pt->audio_format_num);
+ tmp = make_message("%sdec", af);
+ ret = filter_setup(tmp, &pt->fn.conf, &filter_lpr);
+ freep(&tmp);
+ if (ret < 0)
+ goto fail;
+ pt->fn.filter_num = ret;
+ pt->fn.lpr = filter_lpr;
+ decoder = filter_get(ret);
+ pt->fn.btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = filter_name(pt->fn.filter_num),
+ .parent = pt->rn.btrn, .handler = decoder->execute,
+ .context = &pt->fn));
+ if (decoder->open)
+ decoder->open(&pt->fn);
+ PARA_INFO_LOG("buffer tree:\n");
+ btr_log_tree(pt->rn.btrn, LL_INFO);
+
+ /* setup default writer */
+ pt->wn.wid = check_writer_arg_or_die(NULL, &writer_lpr);
+ pt->wn.lpr = writer_lpr;
+ /* success, register tasks */
+ pt->rn.task = task_register(
+ &(struct task_info) {
+ .name = lls_command_name(AFH_RECV_CMD),
+ .pre_select = AFH_RECV->pre_select,
+ .post_select = AFH_RECV->post_select,
+ .context = &pt->rn
+ }, &sched);
+ sprintf(buf, "%s decoder", af);
+ pt->fn.task = task_register(
+ &(struct task_info) {
+ .name = buf,
+ .pre_select = decoder->pre_select,
+ .post_select = decoder->post_select,
+ .context = &pt->fn
+ }, &sched);
+ register_writer_node(&pt->wn, pt->fn.btrn, &sched);
+ return 1;
+fail:
+ wipe_receiver_node();
+ return ret;
+}
+
+static int next_valid_file(void)
+{
+ int i, j = pt->current_file;
+ unsigned num_inputs = lls_num_inputs(play_lpr);
+
+ for (i = 0; i < num_inputs; i++) {
+ j = (j + 1) % num_inputs;
+ if (!pt->invalid[j])
+ return j;
+ }
+ return -E_NO_VALID_FILES;
+}
+
+static int load_next_file(void)
+{
+ int ret;
+
+again:
+ if (pt->rq == CRT_NONE) {
+ pt->start_chunk = 0;
+ ret = next_valid_file();
+ if (ret < 0)
+ return ret;
+ pt->next_file = ret;
+ } else if (pt->rq == CRT_REPOS)
+ pt->next_file = pt->current_file;
+ ret = load_file();
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s: marking file as invalid\n",
+ para_strerror(-ret));
+ pt->invalid[pt->next_file] = true;
+ pt->rq = CRT_NONE;
+ goto again;
+ }
+ pt->current_file = pt->next_file;
+ pt->rq = CRT_NONE;
+ return ret;
+}
+
+static void kill_stream(void)
+{
+ if (pt->wn.task)
+ task_notify(pt->wn.task, E_EOF);
+}
+
+#ifdef HAVE_READLINE
+
+/* only called from com_prev(), nec. only if we have readline */
+static int previous_valid_file(void)
+{
+ int i, j = pt->current_file;
+ unsigned num_inputs = lls_num_inputs(play_lpr);
+
+ for (i = 0; i < num_inputs; i++) {
+ j--;
+ if (j < 0)
+ j = num_inputs - 1;
+ if (!pt->invalid[j])
+ return j;
+ }
+ return -E_NO_VALID_FILES;
+}
+
+#include "interactive.h"
+
+/*
+ * Define the default (internal) key mappings and helper functions to get the
+ * key sequence or the command from a key id, which is what we obtain from
+ * i9e/readline when the key is pressed.
+ *
+ * In some of these helper functions we could return pointers to the constant
+ * arrays defined below. However, for others we can not, so let's better be
+ * consistent and allocate all returned strings on the heap.
+ */
+
+#define INTERNAL_KEYMAP_ENTRIES \
+ KEYMAP_ENTRY("^", "jmp 0"), \
+ KEYMAP_ENTRY("1", "jmp 10"), \
+ KEYMAP_ENTRY("2", "jmp 21"), \
+ KEYMAP_ENTRY("3", "jmp 32"), \
+ KEYMAP_ENTRY("4", "jmp 43"), \
+ KEYMAP_ENTRY("5", "jmp 54"), \
+ KEYMAP_ENTRY("6", "jmp 65"), \
+ KEYMAP_ENTRY("7", "jmp 76"), \
+ KEYMAP_ENTRY("8", "jmp 87"), \
+ KEYMAP_ENTRY("9", "jmp 98"), \
+ KEYMAP_ENTRY("+", "next"), \
+ KEYMAP_ENTRY("-", "prev"), \
+ KEYMAP_ENTRY(":", "bg"), \
+ KEYMAP_ENTRY("i", "info"), \
+ KEYMAP_ENTRY("l", "ls"), \
+ KEYMAP_ENTRY("s", "play"), \
+ KEYMAP_ENTRY("p", "pause"), \
+ KEYMAP_ENTRY("q", "quit"), \
+ KEYMAP_ENTRY("?", "help"), \
+ KEYMAP_ENTRY("\033[D", "ff -10"), \
+ KEYMAP_ENTRY("\033[C", "ff 10"), \
+ KEYMAP_ENTRY("\033[A", "ff 60"), \
+ KEYMAP_ENTRY("\033[B", "ff -60"), \
+
+#define KEYMAP_ENTRY(a, b) a
+static const char *default_keyseqs[] = {INTERNAL_KEYMAP_ENTRIES};
+#undef KEYMAP_ENTRY
+#define KEYMAP_ENTRY(a, b) b
+static const char *default_commands[] = {INTERNAL_KEYMAP_ENTRIES};
+#undef KEYMAP_ENTRY
+#define NUM_INTERNALLY_MAPPED_KEYS ARRAY_SIZE(default_commands)
+#define NUM_MAPPED_KEYS (NUM_INTERNALLY_MAPPED_KEYS + OPT_GIVEN(KEY_MAP))
+#define FOR_EACH_MAPPED_KEY(i) for (i = 0; i < NUM_MAPPED_KEYS; i++)
+
+static inline bool is_internal_key(int key)
+{
+ return key < NUM_INTERNALLY_MAPPED_KEYS;
+}
+
+/* for internal keys, the key id is just the array index. */
+static inline int get_internal_key_map_idx(int key)
+{
+ assert(is_internal_key(key));
+ return key;
+}
+
+/*
+ * For user-defined keys, we have to subtract NUM_INTERNALLY_MAPPED_KEYS. The
+ * difference is the index to the array of user defined key maps.
+ */
+static inline int get_user_key_map_idx(int key)
+{
+ assert(!is_internal_key(key));
+ return key - NUM_INTERNALLY_MAPPED_KEYS;
+}
+
+static inline int get_key_map_idx(int key)
+{
+ return is_internal_key(key)?
+ get_internal_key_map_idx(key) : get_user_key_map_idx(key);
+}
+
+static inline const char *get_user_key_map_arg(int key)
+{
+ return lls_string_val(get_user_key_map_idx(key), OPT_RESULT(KEY_MAP));
+}
+
+static inline char *get_internal_key_map_seq(int key)
+{
+ return para_strdup(default_keyseqs[get_internal_key_map_idx(key)]);
+}
+
+static char *get_user_key_map_seq(int key)
+{
+ const char *kma = get_user_key_map_arg(key);
+ const char *p = strchr(kma + 1, ':');
+ char *result;
+ int len;
+
+ if (!p)
+ return NULL;
+ len = p - kma;
+ result = para_malloc(len + 1);
+ memcpy(result, kma, len);
+ result[len] = '\0';
+ return result;
+}
+
+static char *get_key_map_seq(int key)
+{
+ return is_internal_key(key)?
+ get_internal_key_map_seq(key) : get_user_key_map_seq(key);
+}
+
+static char *get_key_map_seq_safe(int key)
+{
+ const char hex[] = "0123456789abcdef";
+ char *seq = get_key_map_seq(key), *sseq;
+ size_t n, len = strlen(seq);
+
+ if (len == 1 && isprint(*seq))
+ return seq;
+ sseq = para_malloc(2 + 2 * len + 1);
+ sseq[0] = '0';
+ sseq[1] = 'x';
+ for (n = 0; n < len; n++) {
+ uint8_t val = (seq[n] & 0xf0) >> 4;
+ sseq[2 + 2 * n] = hex[val];
+ val = seq[n] & 0xf;
+ sseq[2 + 2 * n + 1] = hex[val];
+ }
+ free(seq);
+ sseq[2 + 2 * n] = '\0';
+ return sseq;
+}
+
+static inline char *get_internal_key_map_cmd(int key)
+{
+ return para_strdup(default_commands[get_internal_key_map_idx(key)]);
+}
+
+static char *get_user_key_map_cmd(int key)
+{
+ const char *kma = get_user_key_map_arg(key);
+ const char *p = strchr(kma + 1, ':');
+
+ if (!p)
+ return NULL;
+ return para_strdup(p + 1);
+}
+
+static char *get_key_map_cmd(int key)
+{
+ return is_internal_key(key)?
+ get_internal_key_map_cmd(key) : get_user_key_map_cmd(key);
+}
+
+static char **get_mapped_keyseqs(void)
+{
+ char **result;
+ int i;
+
+ result = para_malloc((NUM_MAPPED_KEYS + 1) * sizeof(char *));
+ FOR_EACH_MAPPED_KEY(i) {
+ char *seq = get_key_map_seq(i);
+ result[i] = seq;
+ }
+ result[i] = NULL;
+ return result;
+}
+
+static struct i9e_completer pp_completers[];
+
+I9E_DUMMY_COMPLETER(jmp);
+I9E_DUMMY_COMPLETER(next);
+I9E_DUMMY_COMPLETER(prev);
+I9E_DUMMY_COMPLETER(fg);
+I9E_DUMMY_COMPLETER(bg);
+I9E_DUMMY_COMPLETER(ls);
+I9E_DUMMY_COMPLETER(info);
+I9E_DUMMY_COMPLETER(play);
+I9E_DUMMY_COMPLETER(pause);
+I9E_DUMMY_COMPLETER(tasks);
+I9E_DUMMY_COMPLETER(quit);
+I9E_DUMMY_COMPLETER(ff);
+
+static void help_completer(struct i9e_completion_info *ci,
+ struct i9e_completion_result *result)
+{
+ result->matches = i9e_complete_commands(ci->word, pp_completers);
+}
+
+static struct i9e_completer pp_completers[] = {
+#define LSG_PLAY_CMD_CMD(_name) {.name = #_name, \
+ .completer = _name ## _completer}
+ LSG_PLAY_CMD_SUBCOMMANDS
+#undef LSG_PLAY_CMD_CMD
+ {.name = NULL}
+};
+
+static void attach_stdout(const char *name)
+{
+ if (pt->btrn)
+ return;
+ pt->btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = name));
+ i9e_attach_to_stdout(pt->btrn);
+}
+
+static void detach_stdout(void)
+{
+ btr_remove_node(&pt->btrn);
+}
+
+static int com_quit(__a_unused struct lls_parse_result *lpr)
+{
+ pt->rq = CRT_TERM_RQ;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(quit);
+
+static int com_help(struct lls_parse_result *lpr)
+{
+ int i, ret;
+ char *buf, *errctx;
+ size_t sz;
+ const struct lls_command *cmd;
+
+ ret = lls(lls_check_arg_count(lpr, 0, 1, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+ }
+ if (lls_num_inputs(lpr) == 0) {
+ if (pt->background) {
+ for (i = 1; (cmd = lls_cmd(i, play_cmd_suite)); i++) {
+ sz = xasprintf(&buf, "%s\t%s\n",
+ lls_command_name(cmd), lls_purpose(cmd));
+ btr_add_output(buf, sz, pt->btrn);
+ }
+ return 0;
+ }
+ FOR_EACH_MAPPED_KEY(i) {
+ bool internal = is_internal_key(i);
+ int idx = get_key_map_idx(i);
+ char *seq = get_key_map_seq_safe(i);
+ char *kmc = get_key_map_cmd(i);
+ sz = xasprintf(&buf, "%s key #%d: %s -> %s\n",
+ internal? "internal" : "user-defined",
+ idx, seq, kmc);
+ btr_add_output(buf, sz, pt->btrn);
+ free(seq);
+ free(kmc);
+ }
+ return 0;
+ }
+ ret = lls(lls_lookup_subcmd(lls_input(0, lpr), play_cmd_suite,
+ &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+ }
+ cmd = lls_cmd(ret, play_cmd_suite);
+ buf = lls_long_help(cmd);
+ assert(buf);
+ btr_add_output(buf, strlen(buf), pt->btrn);
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(help);
+
+static int com_info(__a_unused struct lls_parse_result *lpr)
+{
+ char *buf;
+ size_t sz;
+ static char dflt[] = "[no information available]";
+
+ sz = xasprintf(&buf, "playlist_pos: %u\npath: %s\n",
+ pt->current_file, get_playlist_file(pt->current_file));
+ btr_add_output(buf, sz, pt->btrn);
+ buf = pt->afhi_txt? pt->afhi_txt : dflt;
+ btr_add_output_dont_free(buf, strlen(buf), pt->btrn);
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(info);
+
+static void list_file(int num)
+{
+ char *buf;
+ size_t sz;
+
+ sz = xasprintf(&buf, "%s %4d %s\n", num == pt->current_file?
+ "*" : " ", num, get_playlist_file(num));
+ btr_add_output(buf, sz, pt->btrn);
+}
+
+static int com_tasks(__a_unused struct lls_parse_result *lpr)
+{
+ static char state;
+ char *buf;
+ size_t sz;
+
+ buf = get_task_list(&sched);
+ btr_add_output(buf, strlen(buf), pt->btrn);
+ state = get_playback_state();
+ sz = xasprintf(&buf, "state: %c\n", state);
+ btr_add_output(buf, sz, pt->btrn);
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(tasks);
+
+static int com_ls(__a_unused struct lls_parse_result *lpr)
+{
+ int i;
+ unsigned num_inputs = lls_num_inputs(play_lpr);
+
+ for (i = 0; i < num_inputs; i++)
+ list_file(i);
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(ls);
+
+static int com_play(struct lls_parse_result *lpr)
+{
+ int32_t x;
+ int ret;
+ char state, *errctx;
+
+ ret = lls(lls_check_arg_count(lpr, 0, 1, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+ }
+ state = get_playback_state();
+ if (lls_num_inputs(lpr) == 0) {
+ if (state == 'P')
+ return 0;
+ pt->next_file = pt->current_file;
+ pt->rq = CRT_REPOS;
+ pt->playing = true;
+ return 0;
+ }
+ ret = para_atoi32(lls_input(0, lpr), &x);
+ if (ret < 0)
+ return ret;
+ if (x < 0 || x >= lls_num_inputs(play_lpr))
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ kill_stream();
+ pt->next_file = x;
+ pt->rq = CRT_FILE_CHANGE;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(play);
+
+static int com_pause(__a_unused struct lls_parse_result *lpr)
+{
+ char state;
+ long unsigned seconds, ss;
+
+ state = get_playback_state();
+ pt->playing = false;
+ if (state != 'P')
+ return 0;
+ seconds = get_play_time();
+ pt->playing = false;
+ ss = 0;
+ if (pt->seconds > 0)
+ ss = seconds * pt->num_chunks / pt->seconds + 1;
+ ss = PARA_MAX(ss, 0UL);
+ ss = PARA_MIN(ss, pt->num_chunks);
+ pt->start_chunk = ss;
+ kill_stream();
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(pause);
+
+static int com_prev(__a_unused struct lls_parse_result *lpr)
+{
+ int ret;
+
+ ret = previous_valid_file();
+ if (ret < 0)
+ return ret;
+ kill_stream();
+ pt->next_file = ret;
+ pt->rq = CRT_FILE_CHANGE;
+ pt->start_chunk = 0;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(prev);
+
+static int com_next(__a_unused struct lls_parse_result *lpr)
+{
+ int ret;
+
+ ret = next_valid_file();
+ if (ret < 0)
+ return ret;
+ kill_stream();
+ pt->next_file = ret;
+ pt->rq = CRT_FILE_CHANGE;
+ pt->start_chunk = 0;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(next);
+
+static int com_fg(__a_unused struct lls_parse_result *lpr)
+{
+ pt->background = false;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(fg);
+
+static int com_bg(__a_unused struct lls_parse_result *lpr)
+{
+ pt->background = true;
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(bg);
+
+static int com_jmp(struct lls_parse_result *lpr)
+{
+ int32_t percent;
+ int ret;
+ char *errctx;
+
+ ret = lls(lls_check_arg_count(lpr, 1, 1, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;
+ }
+ ret = para_atoi32(lls_input(0, lpr), &percent);
+ if (ret < 0)
+ return ret;
+ if (percent < 0 || percent > 100)
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ if (percent == 100)
+ return com_next(NULL);
+ if (pt->playing && !pt->fn.btrn)
+ return 0;
+ pt->start_chunk = percent * pt->num_chunks / 100;
+ if (!pt->playing)
+ return 0;
+ pt->rq = CRT_REPOS;
+ kill_stream();
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(jmp);
+
+static int com_ff(struct lls_parse_result *lpr)
+{
+ int32_t seconds;
+ char *errctx;
+ int ret;
+
+ ret = lls(lls_check_arg_count(lpr, 1, 1, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ return ret;