-/*
- * Copyright (C) 2012 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2012 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file play.c Paraslash's standalone player. */
#include <regex.h>
+#include <signal.h>
+#include <lopsub.h>
+#include "recv_cmd.lsg.h"
+#include "play_cmd.lsg.h"
+#include "write_cmd.lsg.h"
+#include "play.lsg.h"
#include "para.h"
+#include "lsu.h"
#include "list.h"
-#include "play.cmdline.h"
-#include "filter.cmdline.h"
#include "error.h"
-#include "ggo.h"
#include "buffer_tree.h"
#include "version.h"
#include "string.h"
#include "afh.h"
#include "recv.h"
#include "write.h"
-#include "write_common.h"
#include "fd.h"
-static struct play_args_info conf;
+/**
+ * Besides playback tasks which correspond to the receiver/filter/writer nodes,
+ * para_play creates two further tasks: The play task and the i9e task. It is
+ * important whether a function can be called in the context of para_play or
+ * i9e or both. As a rule, all command handlers are called only in i9e context via
+ * the line handler (input mode) or the key handler (command mode) below.
+ *
+ * Playlist handling is done exclusively in play context.
+ */
-/** Initialize the array of errors for para_play. */
-INIT_PLAY_ERRLISTS;
+/** Array of error strings. */
+DEFINE_PARA_ERRLIST;
-/* Activate the afh receiver. */
-extern void afh_recv_init(struct receiver *r);
-#undef AFH_RECEIVER
-#define AFH_RECEIVER {.name = "afh", .init = afh_recv_init},
-DEFINE_RECEIVER_ARRAY;
+static struct lls_parse_result *play_lpr;
-/* FIXME: This is needed by the amp filter. */
-char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
+#define CMD_PTR (lls_cmd(0, play_suite))
+#define OPT_RESULT(_name) \
+ (lls_opt_result(LSG_PLAY_PARA_PLAY_OPT_ ## _name, play_lpr))
+#define OPT_GIVEN(_name) (lls_opt_given(OPT_RESULT(_name)))
+#define OPT_UINT32_VAL(_name) (lls_uint32_val(0, OPT_RESULT(_name)))
+#define OPT_STRING_VAL(_name) (lls_string_val(0, OPT_RESULT(_name)))
+
+/**
+ * Describes a request to change the state of para_play.
+ *
+ * There is only one variable of this type: \a rq of the global play task
+ * structure. Command handlers only set this variable and the post_select()
+ * function of the play task investigates its value during each iteration of
+ * the scheduler run and performs the actual work.
+ */
+enum state_change_request_type {
+ /** Everybody is happy. */
+ CRT_NONE,
+ /** Stream must be repositioned (com_jmp(), com_ff()). */
+ CRT_REPOS,
+ /** New file should be loaded (com_next()). */
+ CRT_FILE_CHANGE,
+ /** Someone wants us for dead (com_quit()). */
+ CRT_TERM_RQ
+};
+
+struct play_task {
+ struct task *task;
+ /* A bit array of invalid files (those will be skipped). */
+ bool *invalid;
+ /* The file which is currently open. */
+ unsigned current_file;
+ /* When to update the status again. */
+ struct timeval next_update;
+
+ /* Root of the buffer tree for command and status output. */
+ struct btr_node *btrn;
+
+ /* The decoding machinery. */
+ struct receiver_node rn;
+ struct filter_node fn;
+ struct writer_node wn;
+
+ /* See comment to enum \ref state_change_request_type above. */
+ enum state_change_request_type rq;
+ /* only relevant if rq == CRT_FILE_CHANGE */
+ unsigned next_file;
+ /*
+ bg: read lines at prompt, fg: display status and wait
+ for keystroke.
+ */
+ bool background;
+
+ /* We have the *intention* to play. Set by com_play(). */
+ bool playing;
+
+ /* as returned by afh_recv->open() */
+ int audio_format_num;
+
+ /* retrieved via the btr exec mechanism */
+ long unsigned start_chunk;
+ long unsigned seconds;
+ long unsigned num_chunks;
+ char *afhi_txt;
+};
+
+typedef int (*play_cmd_handler_t)(struct lls_parse_result *lpr);
+struct play_command_info {
+ play_cmd_handler_t handler;
+};
+#define EXPORT_PLAY_CMD_HANDLER(_cmd) \
+ const struct play_command_info lsg_play_cmd_com_ ## _cmd ## _user_data = { \
+ .handler = com_ ## _cmd \
+ };
static int loglevel = LL_WARNING;
+
+/** The log function which writes log messages to stderr. */
INIT_STDERR_LOGGING(loglevel);
-__noreturn static void print_help_and_die(void)
+char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
+
+static struct sched sched = {.max_fileno = 0};
+static struct play_task play_task, *pt = &play_task;
+
+#define AFH_RECV_CMD (lls_cmd(LSG_RECV_CMD_CMD_AFH, recv_cmd_suite))
+#define AFH_RECV ((struct receiver *)lls_user_data(AFH_RECV_CMD))
+
+static unsigned *shuffle_map;
+
+static const char *get_playlist_file(unsigned idx)
+{
+ return lls_input(shuffle_map[idx], play_lpr);
+}
+
+static void handle_help_flags(void)
{
- int d = conf.detailed_help_given;
- const char **p = d? play_args_info_detailed_help
- : play_args_info_help;
+ char *help;
- printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-"
- PLAY_CMDLINE_PARSER_VERSION);
- printf_or_die("%s\n\n", play_args_info_usage);
- for (; *p; p++)
- printf_or_die("%s\n", *p);
- print_filter_helps(d);
- print_writer_helps(d);
- exit(0);
+ if (OPT_GIVEN(DETAILED_HELP))
+ help = lls_long_help(CMD_PTR);
+ else if (OPT_GIVEN(HELP) || lls_num_inputs(play_lpr) == 0)
+ help = lls_short_help(CMD_PTR);
+ else
+ return;
+ printf("%s\n", help);
+ free(help);
+ exit(EXIT_SUCCESS);
}
static void parse_config_or_die(int argc, char *argv[])
{
- int ret;
- char *config_file;
- struct play_cmdline_parser_params params = {
- .override = 0,
- .initialize = 1,
- .check_required = 0,
- .check_ambiguity = 0,
- .print_errors = 1
- };
+ int i, ret;
+ unsigned num_kmas;
+ char *errctx;
- if (play_cmdline_parser_ext(argc, argv, &conf, ¶ms))
+ ret = lls(lls_parse(argc, argv, CMD_PTR, &play_lpr, &errctx));
+ if (ret < 0) {
+ if (errctx)
+ PARA_EMERG_LOG("%s\n", errctx);
+ free(errctx);
+ PARA_EMERG_LOG("failed to parse command line options: %s\n",
+ para_strerror(-ret));
+ exit(EXIT_FAILURE);
+ }
+ loglevel = OPT_UINT32_VAL(LOGLEVEL);
+ version_handle_flag("play", OPT_GIVEN(VERSION));
+ handle_help_flags(); /* also handles the zero-arg case */
+ ret = lsu_merge_config_file_options(OPT_STRING_VAL(CONFIG_FILE),
+ "play.conf", &play_lpr, CMD_PTR, play_suite, 0 /* flags */);
+ if (ret < 0) {
+ PARA_EMERG_LOG("failed to parse config file: %s\n",
+ para_strerror(-ret));
exit(EXIT_FAILURE);
- HANDLE_VERSION_FLAG("play", conf);
- if (conf.help_given || conf.detailed_help_given)
- print_help_and_die();
- loglevel = get_loglevel_by_name(conf.loglevel_arg);
- if (conf.config_file_given)
- config_file = para_strdup(conf.config_file_arg);
+ }
+ loglevel = OPT_UINT32_VAL(LOGLEVEL);
+ 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);
+ 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 {
- char *home = para_homedir();
- config_file = make_message("%s/.paraslash/play.conf", home);
- free(home);
+ 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 *cr)
+{
+ char *opts[] = {LSG_PLAY_CMD_HELP_OPTS, NULL};
+
+ if (ci->word[0] == '-') {
+ i9e_complete_option(opts, ci, cr);
+ return;
}
- ret = file_exists(config_file);
- if (conf.config_file_given && !ret) {
- PARA_EMERG_LOG("can not read config file %s\n", config_file);
- goto err;
+ cr->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;
+ char *buf;
+ size_t sz;
+ unsigned n;
+ const struct lls_opt_result *r =
+ lls_opt_result(LSG_PLAY_CMD_HELP_OPT_LONG, lpr);
+ bool long_help = lls_opt_given(r);
+
+ if (!pt->background) {
+ 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;
}
- if (ret) {
- params.initialize = 0;
- params.check_required = 1;
- play_cmdline_parser_config_file(config_file, &conf, ¶ms);
+ lsu_com_help(long_help, lpr, play_cmd_suite, NULL, &buf, &n);
+ btr_add_output(buf, n, 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;
}
- free(config_file);
+ 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;
+ }
+ ret = para_atoi32(lls_input(0, lpr), &seconds);
+ if (ret < 0)
+ return ret;
+ if (pt->playing && !pt->fn.btrn)
+ return 0;
+ seconds += get_play_time();
+ seconds = PARA_MIN(seconds, (typeof(seconds))pt->seconds - 4);
+ seconds = PARA_MAX(seconds, 0);
+ pt->start_chunk = pt->num_chunks * seconds / pt->seconds;
+ pt->start_chunk = PARA_MIN(pt->start_chunk, pt->num_chunks - 1);
+ pt->start_chunk = PARA_MAX(pt->start_chunk, 0UL);
+ if (!pt->playing)
+ return 0;
+ pt->rq = CRT_REPOS;
+ kill_stream();
+ return 0;
+}
+EXPORT_PLAY_CMD_HANDLER(ff);
+
+static int run_command(char *line)
+{
+ int ret, argc;
+ char **argv = NULL;
+ char *errctx = NULL;
+ const struct play_command_info *pci;
+ struct lls_parse_result *lpr;
+ const struct lls_command *cmd;
+
+ attach_stdout(__FUNCTION__);
+ ret = create_argv(line, " ", &argv);
+ if (ret < 0)
+ goto out;
+ if (ret == 0)
+ goto out;
+ argc = ret;
+ ret = lls(lls_lookup_subcmd(argv[0], play_cmd_suite, &errctx));
+ if (ret < 0)
+ goto out;
+ cmd = lls_cmd(ret, play_cmd_suite);
+ ret = lls(lls_parse(argc, argv, cmd, &lpr, &errctx));
+ if (ret < 0)
+ goto out;
+ pci = lls_user_data(cmd);
+ ret = pci->handler(lpr);
+ lls_free_parse_result(lpr, cmd);
+out:
+ if (errctx)
+ PARA_ERROR_LOG("%s\n", errctx);
+ free(errctx);
+ free_argv(argv);
+ return ret;
+}
+
+static int play_i9e_line_handler(char *line)
+{
+ return run_command(line);
+}
+
+static int play_i9e_key_handler(int key)
+{
+ int idx = get_key_map_idx(key);
+ char *seq = get_key_map_seq(key);
+ char *cmd = get_key_map_cmd(key);
+ bool internal = is_internal_key(key);
+
+ PARA_NOTICE_LOG("pressed %d: %s key #%d (%s -> %s)\n",
+ key, internal? "internal" : "user-defined",
+ idx, seq, cmd);
+ run_command(cmd);
+ free(seq);
+ free(cmd);
+ pt->next_update = *now;
+ return 0;
+}
+
+static struct i9e_client_info ici = {
+ .fds = {0, 1, 2},
+ .prompt = "para_play> ",
+ .line_handler = play_i9e_line_handler,
+ .key_handler = play_i9e_key_handler,
+ .completers = pp_completers,
+};
+
+static void sigint_handler(int sig)
+{
+ pt->background = true;
+ i9e_signal_dispatch(sig);
+}
+
+/*
+ * We start with para_log() set to the standard log function which writes to
+ * stderr. Once the i9e subsystem has been initialized, we switch to the i9e
+ * log facility.
+ */
+static void session_open(void)
+{
+ int ret;
+ char *history_file;
+ struct sigaction act;
+
+ PARA_NOTICE_LOG("\n%s\n", version_text("play"));
+ if (OPT_GIVEN(HISTORY_FILE))
+ history_file = para_strdup(OPT_STRING_VAL(HISTORY_FILE));
+ else {
+ char *home = para_homedir();
+ history_file = make_message("%s/.paraslash/play.history",
+ home);
+ free(home);
+ }
+ ici.history_file = history_file;
+ ici.loglevel = loglevel;
+
+ act.sa_handler = sigint_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+ sigaction(SIGINT, &act, NULL);
+ act.sa_handler = i9e_signal_dispatch;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = 0;
+ sigaction(SIGWINCH, &act, NULL);
+ sched.select_function = i9e_select;
+
+ ici.bound_keyseqs = get_mapped_keyseqs();
+ pt->btrn = ici.producer = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = __FUNCTION__));
+ ret = i9e_open(&ici, &sched);
+ if (ret < 0)
+ goto out;
+ para_log = i9e_log;
return;
-err:
- free(config_file);
+out:
+ free(history_file);
+ if (ret >= 0)
+ return;
+ PARA_EMERG_LOG("fatal: %s\n", para_strerror(-ret));
exit(EXIT_FAILURE);
}
+static void session_update_time_string(char *str, unsigned len)
+{
+ if (pt->background)
+ return;
+ if (pt->btrn) {
+ if (btr_get_output_queue_size(pt->btrn) > 0)
+ return;
+ if (btr_get_input_queue_size(pt->btrn) > 0)
+ return;
+ }
+ ie9_print_status_bar(str, len);
+}
+
+/*
+ * If we are about to die we must call i9e_close() to reset the terminal.
+ * However, i9e_close() must be called in *this* context, i.e. from
+ * play_task.post_select() rather than from i9e_post_select(), because
+ * otherwise i9e would access freed memory upon return. So the play task must
+ * stay alive until the i9e task terminates.
+ *
+ * We achieve this by sending a fake SIGTERM signal via i9e_signal_dispatch()
+ * and reschedule. In the next iteration, i9e->post_select returns an error and
+ * terminates. Subsequent calls to i9e_get_error() then return negative and we
+ * are allowed to call i9e_close() and terminate as well.
+ */
+static int session_post_select(__a_unused struct sched *s)
+{
+ int ret;
+
+ if (pt->background)
+ detach_stdout();
+ else
+ attach_stdout(__FUNCTION__);
+ ret = i9e_get_error();
+ if (ret < 0) {
+ kill_stream();
+ i9e_close();
+ para_log = stderr_log;
+ free(ici.history_file);
+ return ret;
+ }
+ if (get_playback_state() == 'X')
+ i9e_signal_dispatch(SIGTERM);
+ return 0;
+}
+
+#else /* HAVE_READLINE */
+
+static int session_post_select(struct sched *s)
+{
+ char c;
+
+ if (!FD_ISSET(STDIN_FILENO, &s->rfds))
+ return 0;
+ if (read(STDIN_FILENO, &c, 1))
+ do_nothing;
+ kill_stream();
+ return 1;
+}
+
+static void session_open(void)
+{
+}
+
+static void session_update_time_string(char *str, __a_unused unsigned len)
+{
+ printf("\r%s ", str);
+ fflush(stdout);
+}
+#endif /* HAVE_READLINE */
+
+static void play_pre_select(struct sched *s, __a_unused void *context)
+{
+ char state;
+
+ para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
+ state = get_playback_state();
+ if (state == 'R' || state == 'F' || state == 'X')
+ return sched_min_delay(s);
+ sched_request_barrier_or_min_delay(&pt->next_update, s);
+}
+
+static unsigned get_time_string(char **result)
+{
+ int seconds, length;
+ char state = get_playback_state();
+
+ /* do not return anything if things are about to change */
+ if (state != 'P' && state != 'U') {
+ *result = NULL;
+ return 0;
+ }
+ length = pt->seconds;
+ if (length == 0)
+ return xasprintf(result, "0:00 [0:00] (0%%/0:00)");
+ seconds = get_play_time();
+ return xasprintf(result, "#%u: %d:%02d [%d:%02d] (%d%%/%d:%02d) %s",
+ pt->current_file,
+ seconds / 60,
+ seconds % 60,
+ (length - seconds) / 60,
+ (length - seconds) % 60,
+ length? (seconds * 100 + length / 2) / length : 0,
+ length / 60,
+ length % 60,
+ get_playlist_file(pt->current_file)
+ );
+}
+
+static int play_post_select(struct sched *s, __a_unused void *context)
+{
+ int ret;
+
+ ret = eof_cleanup();
+ if (ret < 0) {
+ pt->rq = CRT_TERM_RQ;
+ return 0;
+ }
+ ret = session_post_select(s);
+ if (ret < 0)
+ goto out;
+ if (!pt->wn.btrn && !pt->fn.btrn) {
+ char state = get_playback_state();
+ if (state == 'P' || state == 'R' || state == 'F') {
+ PARA_NOTICE_LOG("state: %c\n", state);
+ ret = load_next_file();
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ pt->rq = CRT_TERM_RQ;
+ ret = 1;
+ goto out;
+ }
+ pt->next_update = *now;
+ }
+ }
+ if (tv_diff(now, &pt->next_update, NULL) >= 0) {
+ char *str;
+ unsigned len = get_time_string(&str);
+ struct timeval delay = {.tv_sec = 0, .tv_usec = 100 * 1000};
+ if (str && len > 0)
+ session_update_time_string(str, len);
+ free(str);
+ tv_add(now, &delay, &pt->next_update);
+ }
+ ret = 1;
+out:
+ return ret;
+}
+
+/**
+ * The main function of para_play.
+ *
+ * \param argc Standard.
+ * \param argv Standard.
+ *
+ * \return \p EXIT_FAILURE or \p EXIT_SUCCESS.
+ */
int main(int argc, char *argv[])
{
+ int ret;
+ unsigned num_inputs;
+
/* needed this early to make help work */
recv_init();
- filter_init();
- writer_init();
+ sched.default_timeout.tv_sec = 5;
parse_config_or_die(argc, argv);
- return 0;
+ AFH_RECV->init();
+ session_open();
+ num_inputs = lls_num_inputs(play_lpr);
+ init_shuffle_map();
+ pt->invalid = para_calloc(sizeof(*pt->invalid) * num_inputs);
+ pt->rq = CRT_FILE_CHANGE;
+ pt->current_file = num_inputs - 1;
+ pt->playing = true;
+ pt->task = task_register(&(struct task_info){
+ .name = "play",
+ .pre_select = play_pre_select,
+ .post_select = play_post_select,
+ .context = pt,
+ }, &sched);
+ ret = schedule(&sched);
+ sched_shutdown(&sched);
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / paraslash.git / blobdiff