/** \file play.c Paraslash's standalone player. */
#include <regex.h>
+#include <sys/time.h>
+#include <fnmatch.h>
+#include <signal.h>
#include "para.h"
#include "list.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.
+ */
+
+/**
+ * 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 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;
+};
/** Initialize the array of errors for para_play. */
INIT_PLAY_ERRLISTS;
/* Activate the afh receiver. */
extern void afh_recv_init(struct receiver *r);
#undef AFH_RECEIVER
+/** Initialization code for a receiver struct. */
#define AFH_RECEIVER {.name = "afh", .init = afh_recv_init},
+/** This expands to the array of all receivers. */
DEFINE_RECEIVER_ARRAY;
-/* FIXME: This is needed by the amp filter. */
-char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
-
static int loglevel = LL_WARNING;
+
+/** The log function which writes log messages to stderr. */
INIT_STDERR_LOGGING(loglevel);
+char *stat_item_values[NUM_STAT_ITEMS] = {NULL};
+
+/** Iterate over all files in the playlist. */
+#define FOR_EACH_PLAYLIST_FILE(i) for (i = 0; i < conf.inputs_num; i++)
+static struct play_args_info conf;
+
+static struct sched sched = {.max_fileno = 0};
+static struct play_task play_task;
+static struct receiver *afh_recv;
+
+static void check_afh_receiver_or_die(void)
+{
+ int i;
+
+ FOR_EACH_RECEIVER(i) {
+ struct receiver *r = receivers + i;
+ if (strcmp(r->name, "afh"))
+ continue;
+ afh_recv = r;
+ return;
+ }
+ PARA_EMERG_LOG("fatal: afh receiver not found\n");
+ exit(EXIT_FAILURE);
+}
+
+/** Description to be included in the --detailed-help output. */
+#define PP_DESC \
+"para_play is a command line audio player.\n" \
+"\n" \
+"It operates either in command mode or in insert mode. In insert mode it\n" \
+"presents a prompt and allows to enter para_play commands like stop, play, pause\n" \
+"etc. In command mode, the current audio file is shown and the program reads\n" \
+"single key strokes from stdin. Keys may be mapped to para_play commands.\n" \
+"Whenever a mapped key is pressed, the associated command is executed.\n" \
+
__noreturn static void print_help_and_die(void)
{
int d = conf.detailed_help_given;
const char **p = d? play_args_info_detailed_help
: play_args_info_help;
- printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-"
- PLAY_CMDLINE_PARSER_VERSION);
+// printf_or_die("%s\n\n", PLAY_CMDLINE_PARSER_PACKAGE "-"
+// PLAY_CMDLINE_PARSER_VERSION);
+
printf_or_die("%s\n\n", play_args_info_usage);
+ if (d)
+ printf_or_die("%s\n", PP_DESC);
for (; *p; p++)
printf_or_die("%s\n", *p);
- print_filter_helps(d);
- print_writer_helps(d);
exit(0);
}
static void parse_config_or_die(int argc, char *argv[])
{
- int ret;
+ int i, ret;
char *config_file;
struct play_cmdline_parser_params params = {
.override = 0,
params.check_required = 1;
play_cmdline_parser_config_file(config_file, &conf, ¶ms);
}
+ for (i = 0; i < conf.key_map_given; i++) {
+ char *s = strchr(conf.key_map_arg[i] + 1, ':');
+ if (s)
+ continue;
+ PARA_EMERG_LOG("invalid key map arg: %s\n", conf.key_map_arg[i]);
+ goto err;
+ }
free(config_file);
return;
err:
exit(EXIT_FAILURE);
}
+static char get_playback_state(struct play_task *pt)
+{
+ 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(struct play_task *pt)
+{
+ char state = get_playback_state(pt);
+ 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(struct play_task *pt)
+{
+ PARA_NOTICE_LOG("cleaning up receiver node\n");
+ btr_remove_node(&pt->rn.btrn);
+ afh_recv->close(&pt->rn);
+ afh_recv->free_config(pt->rn.conf);
+ memset(&pt->rn, 0, sizeof(struct receiver_node));
+}
+
+/* returns: 0 not eof, 1: eof, < 0: fatal error. */
+static int get_playback_error(struct play_task *pt)
+{
+ int err = pt->wn.task.error;
+
+ if (err >= 0)
+ return 0;
+ if (pt->fn.task.error >= 0)
+ return 0;
+ if (pt->rn.task.error >= 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(struct play_task *pt)
+{
+ struct writer *w = writers + DEFAULT_WRITER;
+ struct filter *decoder = filters + pt->fn.filter_num;
+ int ret;
+
+ ret = get_playback_error(pt);
+ if (ret == 0)
+ return ret;
+ PARA_NOTICE_LOG("cleaning up wn/fn nodes\n");
+ w->close(&pt->wn);
+ btr_remove_node(&pt->wn.btrn);
+ w->free_config(pt->wn.conf);
+ memset(&pt->wn, 0, sizeof(struct writer_node));
+
+ decoder->close(&pt->fn);
+ btr_remove_node(&pt->fn.btrn);
+ free(pt->fn.conf);
+ memset(&pt->fn, 0, sizeof(struct filter_node));
+
+ 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(pt);
+ return ret;
+}
+
+static int shuffle_compare(__a_unused const void *a, __a_unused const void *b)
+{
+ return para_random(100) - 50;
+}
+
+static void shuffle(char **base, size_t num)
+{
+ srandom(now->tv_sec);
+ qsort(base, num, sizeof(char *), shuffle_compare);
+}
+
+static struct btr_node *new_recv_btrn(struct receiver_node *rn)
+{
+ return btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = afh_recv->name, .context = rn,
+ .handler = afh_recv->execute));
+}
+
+static int open_new_file(struct play_task *pt)
+{
+ int ret;
+ char *tmp, *path = conf.inputs[pt->next_file], *afh_recv_conf[] =
+ {"play", "-f", path, "-b", "0", NULL};
+
+ PARA_NOTICE_LOG("next file: %s\n", path);
+ wipe_receiver_node(pt);
+ pt->start_chunk = 0;
+ pt->rn.btrn = new_recv_btrn(&pt->rn);
+ pt->rn.conf = afh_recv->parse_config(ARRAY_SIZE(afh_recv_conf) - 1,
+ afh_recv_conf);
+ assert(pt->rn.conf);
+ pt->rn.receiver = afh_recv;
+ ret = afh_recv->open(&pt->rn);
+ if (ret < 0) {
+ PARA_ERROR_LOG("could not open %s: %s\n", path,
+ para_strerror(-ret));
+ 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;
+ }
+ pt->rn.task.pre_select = afh_recv->pre_select;
+ pt->rn.task.post_select = afh_recv->post_select;
+ sprintf(pt->rn.task.status, "%s receiver node", afh_recv->name);
+ return 1;
+fail:
+ wipe_receiver_node(pt);
+ return ret;
+}
+
+static int load_file(struct play_task *pt)
+{
+ const char *af;
+ char *tmp;
+ int ret;
+ struct filter *decoder;
+
+ btr_remove_node(&pt->rn.btrn);
+ if (!pt->rn.receiver || pt->next_file != pt->current_file) {
+ ret = open_new_file(pt);
+ if (ret < 0)
+ return ret;
+ } else {
+ char buf[20];
+ 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 = check_filter_arg(tmp, &pt->fn.conf);
+ freep(&tmp);
+ if (ret < 0)
+ goto fail;
+ pt->fn.filter_num = ret;
+ decoder = filters + ret;
+ pt->fn.task.pre_select = decoder->pre_select;
+ pt->fn.task.post_select = decoder->post_select;
+ sprintf(pt->fn.task.status, "%s decoder", af);
+ pt->fn.btrn = btr_new_node(&(struct btr_node_description)
+ EMBRACE(.name = decoder->name, .parent = pt->rn.btrn,
+ .handler = decoder->execute, .context = &pt->fn));
+ decoder->open(&pt->fn);
+
+ /* setup default writer */
+ pt->wn.conf = check_writer_arg_or_die(NULL, &pt->wn.writer_num);
+ pt->wn.task.error = 0;
+
+ /* success, register tasks */
+ register_task(&sched, &pt->rn.task);
+ register_task(&sched, &pt->fn.task);
+ register_writer_node(&pt->wn, pt->fn.btrn, &sched);
+ return 1;
+fail:
+ afh_recv->close(&pt->rn);
+ btr_remove_node(&pt->rn.btrn);
+ afh_recv->free_config(pt->rn.conf);
+ return ret;
+}
+
+static int next_valid_file(struct play_task *pt)
+{
+ int i, j = pt->current_file;
+
+ FOR_EACH_PLAYLIST_FILE(i) {
+ j = (j + 1) % conf.inputs_num;
+ if (!pt->invalid[j])
+ return j;
+ }
+ return -E_NO_VALID_FILES;
+}
+
+static int load_next_file(struct play_task *pt)
+{
+ int ret;
+
+again:
+ if (pt->rq == CRT_NONE || pt->rq == CRT_FILE_CHANGE) {
+ pt->start_chunk = 0;
+ ret = next_valid_file(pt);
+ if (ret < 0)
+ return ret;
+ pt->next_file = ret;
+ } else if (pt->rq == CRT_REPOS)
+ pt->next_file = pt->current_file;
+ ret = load_file(pt);
+ if (ret < 0) {
+ 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(struct play_task *pt)
+{
+ 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(struct play_task *pt)
+{
+ int i, j = pt->current_file;
+
+ FOR_EACH_PLAYLIST_FILE(i) {
+ j--;
+ if (j < 0)
+ j = conf.inputs_num - 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 + conf.key_map_given)
+#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 char *get_user_key_map_arg(int key)
+{
+ return conf.key_map_arg[get_user_key_map_idx(key)];
+}
+
+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 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) {
+ int idx = get_key_map_idx(i);
+ char *seq = get_key_map_seq(i);
+ char *cmd = get_key_map_cmd(i);
+ bool internal = is_internal_key(i);
+ PARA_DEBUG_LOG("%s key sequence #%d: %s -> %s\n",
+ internal? "internal" : "user-defined",
+ idx, seq, cmd);
+ result[i] = seq;
+ free(cmd);
+ }
+ result[i] = NULL;
+ return result;
+}
+
+#include "play_completion.h"
+
+
+/* defines one command of para_play */
+struct pp_command {
+ const char *name;
+ int (*handler)(struct play_task *, int, char**);
+ const char *description;
+ const char *usage;
+ const char *help;
+};
+
+#include "play_command_list.h"
+static struct pp_command pp_cmds[] = {DEFINE_PLAY_CMD_ARRAY};
+#define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
+
+#include "play_completion.h"
+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(stop);
+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[] = {PLAY_COMPLETERS {.name = NULL}};
+
+static void attach_stdout(struct play_task *pt, 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(struct play_task *pt)
+{
+ btr_remove_node(&pt->btrn);
+}
+
+static int com_quit(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ pt->rq = CRT_TERM_RQ;
+ return 0;
+}
+
+static int com_help(struct play_task *pt, int argc, char **argv)
+{
+ int i;
+ char *buf;
+ size_t sz;
+
+ if (argc > 2)
+ return -E_PLAY_SYNTAX;
+ if (argc < 2) {
+ if (pt->background)
+ FOR_EACH_COMMAND(i) {
+ sz = xasprintf(&buf, "%s\t%s\n", pp_cmds[i].name,
+ pp_cmds[i].description);
+ btr_add_output(buf, sz, pt->btrn);
+ }
+ else {
+ FOR_EACH_MAPPED_KEY(i) {
+ bool internal = is_internal_key(i);
+ int idx = get_key_map_idx(i);
+ char *seq = get_key_map_seq(i);
+ char *cmd = get_key_map_cmd(i);
+ sz = xasprintf(&buf,
+ "%s key #%d: %s -> %s\n",
+ internal? "internal" : "user-defined",
+ idx, seq, cmd);
+ btr_add_output(buf, sz, pt->btrn);
+ free(seq);
+ free(cmd);
+ }
+ }
+ return 0;
+ }
+ FOR_EACH_COMMAND(i) {
+ if (strcmp(pp_cmds[i].name, argv[1]))
+ continue;
+ sz = xasprintf(&buf,
+ "NAME\n\t%s -- %s\n"
+ "SYNOPSIS\n\t%s\n"
+ "DESCRIPTION\n%s\n",
+ argv[1],
+ pp_cmds[i].description,
+ pp_cmds[i].usage,
+ pp_cmds[i].help
+ );
+ btr_add_output(buf, sz, pt->btrn);
+ return 0;
+ }
+ return -E_BAD_PLAY_CMD;
+}
+
+static int com_info(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ char *buf;
+ size_t sz;
+ static char dflt[] = "[no information available]";
+
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ sz = xasprintf(&buf, "playlist_pos: %u\npath: %s\n",
+ pt->current_file, conf.inputs[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;
+}
+
+static void list_file(struct play_task *pt, int num)
+{
+ char *buf;
+ size_t sz;
+
+ sz = xasprintf(&buf, "%s %4u %s\n", num == pt->current_file?
+ "*" : " ", num, conf.inputs[num]);
+ btr_add_output(buf, sz, pt->btrn);
+}
+
+static int com_tasks(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ static char state;
+ char *buf;
+ size_t sz;
+
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+
+ buf = get_task_list(&sched);
+ btr_add_output(buf, strlen(buf), pt->btrn);
+ state = get_playback_state(pt);
+ sz = xasprintf(&buf, "state: %c\n", state);
+ btr_add_output(buf, sz, pt->btrn);
+ return 0;
+}
+
+static int com_ls(struct play_task *pt, int argc, char **argv)
+{
+ int i, j, ret;
+
+ if (argc == 1) {
+ FOR_EACH_PLAYLIST_FILE(i)
+ list_file(pt, i);
+ return 0;
+ }
+ for (j = 1; j < argc; j++) {
+ FOR_EACH_PLAYLIST_FILE(i) {
+ ret = fnmatch(argv[j], conf.inputs[i], 0);
+ if (ret == 0) /* match */
+ list_file(pt, i);
+ }
+ }
+ return 0;
+}
+
+static int com_play(struct play_task *pt, int argc, char **argv)
+{
+ int32_t x;
+ int ret;
+ char state;
+
+ if (argc > 2)
+ return -E_PLAY_SYNTAX;
+ state = get_playback_state(pt);
+ if (argc == 1) {
+ if (state == 'P')
+ return 0;
+ pt->next_file = pt->current_file;
+ pt->rq = CRT_REPOS;
+ pt->playing = true;
+ return 0;
+ }
+ ret = para_atoi32(argv[1], &x);
+ if (ret < 0)
+ return ret;
+ if (x < 0 || x >= conf.inputs_num)
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ kill_stream(pt);
+ pt->next_file = x;
+ pt->rq = CRT_FILE_CHANGE;
+ return 0;
+}
+
+static int com_pause(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ char state;
+ long unsigned seconds, ss;
+
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ state = get_playback_state(pt);
+ pt->playing = false;
+ if (state != 'P')
+ return 0;
+ seconds = get_play_time(pt);
+ 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(pt);
+ return 0;
+}
+
+static int com_prev(struct play_task *pt, int argc, __a_unused char **argv)
+
+{
+ int ret;
+
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ ret = previous_valid_file(pt);
+ if (ret < 0)
+ return ret;
+ kill_stream(pt);
+ pt->next_file = ret;
+ pt->rq = CRT_FILE_CHANGE;
+ return 0;
+}
+
+static int com_next(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ int ret;
+
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ ret = next_valid_file(pt);
+ if (ret < 0)
+ return ret;
+ kill_stream(pt);
+ pt->next_file = ret;
+ pt->rq = CRT_FILE_CHANGE;
+ return 0;
+}
+
+static int com_fg(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ pt->background = false;
+ return 0;
+}
+
+static int com_bg(struct play_task *pt, int argc, __a_unused char **argv)
+{
+ if (argc != 1)
+ return -E_PLAY_SYNTAX;
+ pt->background = true;
+ return 0;
+}
+
+static int com_jmp(struct play_task *pt, int argc, char **argv)
+{
+ int32_t percent;
+ int ret;
+
+ if (argc != 2)
+ return -E_PLAY_SYNTAX;
+ ret = para_atoi32(argv[1], &percent);
+ if (ret < 0)
+ return ret;
+ if (percent < 0 || percent > 100)
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ 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(pt);
+ return 0;
+}
+
+static int com_ff(struct play_task *pt, int argc, char **argv)
+{
+ int32_t seconds;
+ int ret;
+
+ if (argc != 2)
+ return -E_PLAY_SYNTAX;
+ ret = para_atoi32(argv[1], &seconds);
+ if (ret < 0)
+ return ret;
+ if (pt->playing && !pt->fn.btrn)
+ return 0;
+ seconds += get_play_time(pt);
+ 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(pt);
+ return 0;
+}
+
+static int run_command(char *line, struct play_task *pt)
+{
+ int i, ret, argc;
+ char **argv = NULL;
+
+ attach_stdout(pt, __FUNCTION__);
+ ret = create_argv(line, " ", &argv);
+ if (ret < 0) {
+ PARA_ERROR_LOG("parse error: %s\n", para_strerror(-ret));
+ return 0;
+ }
+ if (ret == 0)
+ goto out;
+ argc = ret;
+ FOR_EACH_COMMAND(i) {
+ if (strcmp(pp_cmds[i].name, argv[0]))
+ continue;
+ ret = pp_cmds[i].handler(pt, argc, argv);
+ if (ret < 0)
+ PARA_WARNING_LOG("%s: %s\n", pt->background?
+ "" : argv[0], para_strerror(-ret));
+ ret = 1;
+ goto out;
+ }
+ PARA_WARNING_LOG("invalid command: %s\n", argv[0]);
+ ret = 0;
+out:
+ free_argv(argv);
+ return ret;
+}
+
+static int play_i9e_line_handler(char *line)
+{
+ struct play_task *pt = &play_task;
+ int ret;
+
+ if (line == NULL || !*line)
+ return 0;
+ ret = run_command(line, pt);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static int play_i9e_key_handler(int key)
+{
+ struct play_task *pt = &play_task;
+ 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, pt);
+ 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)
+{
+ play_task.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(__a_unused struct play_task *pt)
+{
+ int ret;
+ char *history_file;
+ struct sigaction act;
+
+ PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("play"));
+ if (conf.history_file_given)
+ history_file = para_strdup(conf.history_file_arg);
+ 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;
+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(struct play_task *pt, 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, struct task *t)
+{
+ struct play_task *pt = container_of(t, struct play_task, task);
+ int ret;
+
+ if (pt->background)
+ detach_stdout(pt);
+ else
+ attach_stdout(pt, __FUNCTION__);
+ ret = i9e_get_error();
+ if (ret < 0) {
+ kill_stream(pt);
+ i9e_close();
+ para_log = stderr_log;
+ free(ici.history_file);
+ return ret;
+ }
+ if (get_playback_state(pt) == 'X')
+ i9e_signal_dispatch(SIGTERM);
+ return 0;
+}
+
+#else /* HAVE_READLINE */
+
+static int session_post_select(struct sched *s, struct task *t)
+{
+ struct play_task *pt = container_of(t, struct play_task, task);
+ char c;
+
+ if (!FD_ISSET(STDIN_FILENO, &s->rfds))
+ return 0;
+ if (read(STDIN_FILENO, &c, 1))
+ do_nothing;
+ kill_stream(pt);
+ return 1;
+}
+
+static void session_open(__a_unused struct play_task *pt)
+{
+}
+
+static void session_update_time_string(__a_unused struct play_task *pt,
+ char *str, __a_unused unsigned len)
+{
+ printf("\r%s ", str);
+ fflush(stdout);
+}
+#endif /* HAVE_READLINE */
+
+static void play_pre_select(struct sched *s, struct task *t)
+{
+ struct play_task *pt = container_of(t, struct play_task, task);
+ char state;
+
+ para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
+ state = get_playback_state(pt);
+ 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(struct play_task *pt, char **result)
+{
+ int seconds, length;
+ char state = get_playback_state(pt);
+
+ /* 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(pt);
+ 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,
+ conf.inputs[pt->current_file]
+ );
+}
+
+static void play_post_select(struct sched *s, struct task *t)
+{
+ struct play_task *pt = container_of(t, struct play_task, task);
+ int ret;
+
+ ret = eof_cleanup(pt);
+ if (ret < 0) {
+ pt->rq = CRT_TERM_RQ;
+ return;
+ }
+ ret = session_post_select(s, t);
+ if (ret < 0)
+ goto out;
+ if (!pt->wn.btrn && !pt->fn.btrn) {
+ char state = get_playback_state(pt);
+ if (state == 'P' || state == 'R' || state == 'F') {
+ PARA_NOTICE_LOG("state: %c\n", state);
+ ret = load_next_file(pt);
+ 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(pt, &str);
+ struct timeval delay = {.tv_sec = 0, .tv_usec = 100 * 1000};
+ if (str && len > 0)
+ session_update_time_string(pt, str, len);
+ free(str);
+ tv_add(now, &delay, &pt->next_update);
+ }
+ ret = 1;
+out:
+ t->error = 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;
+ struct play_task *pt = &play_task;
+
/* needed this early to make help work */
recv_init();
filter_init();
writer_init();
+ gettimeofday(now, NULL);
+ sched.default_timeout.tv_sec = 5;
+
parse_config_or_die(argc, argv);
- return 0;
+ if (conf.inputs_num == 0)
+ print_help_and_die();
+ check_afh_receiver_or_die();
+
+ session_open(pt);
+ if (conf.randomize_given)
+ shuffle(conf.inputs, conf.inputs_num);
+ pt->invalid = para_calloc(sizeof(*pt->invalid) * conf.inputs_num);
+ pt->rq = CRT_FILE_CHANGE;
+ pt->current_file = conf.inputs_num - 1;
+ pt->playing = true;
+ pt->task.pre_select = play_pre_select;
+ pt->task.post_select = play_post_select;
+ sprintf(pt->task.status, "play task");
+ register_task(&sched, &pt->task);
+ ret = schedule(&sched);
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
}
projects / paraslash.git / commitdiff