X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=audiod.c;h=29a8aa30abec6be72aee946b92d7767f3fc037e5;hp=56661b802948cc4a2ff8601e6f227c56c134a1fe;hb=672e27768e31a6eaa6854d4fc75ee6885db9abd8;hpb=6bdac07456cb5872f824028912d1049883a9c21f;ds=inline diff --git a/audiod.c b/audiod.c index 56661b80..29a8aa30 100644 --- a/audiod.c +++ b/audiod.c @@ -8,16 +8,17 @@ #include #include #include +#include #include "para.h" #include "error.h" +#include "crypt.h" #include "audiod.cmdline.h" #include "list.h" #include "sched.h" #include "ggo.h" #include "recv.h" #include "filter.h" -#include "grab_client.cmdline.h" #include "grab_client.h" #include "client.cmdline.h" #include "client.h" @@ -49,8 +50,8 @@ struct audio_format_info { void **filter_conf; /** the number of filters that should be activated for this audio format */ unsigned int num_writers; - /** pointer to the array of writers to be activated */ - struct writer **writers; + /** Array of writer numbers to be activated. */ + int *writer_nums; /** pointer to the array of writer configurations */ void **writer_conf; /** do not start receiver/filters/writer before this time */ @@ -66,6 +67,47 @@ struct audio_format_info { * */ struct slot_info slot[MAX_STREAM_SLOTS]; +/** The vss status flags audiod is interested in. */ +enum vss_status_flags { + /** Whether the 'N' flag is set. */ + VSS_STATUS_FLAG_NEXT = 1, + /** The 'P' flag is set. */ + VSS_STATUS_FLAG_PLAYING = 2, +}; + +/** + * The task for obtaining para_server's status (para_client stat). + * + * \sa struct task, struct sched. + */ +struct status_task { + /** The associated task structure of audiod. */ + struct task task; + /** Client data associated with the stat task. */ + struct client_task *ct; + /** Do not restart client command until this time. */ + struct timeval restart_barrier; + /** Last time we received status data from para_server. */ + struct timeval last_status_read; + /** The offset value announced by para_server. */ + int offset_seconds; + /** The length of the current audio file as announced by para_server. */ + int length_seconds; + /** The start of the current stream from the view of para_server. */ + struct timeval server_stream_start; + /** The average time deviation between para_server and para_audiod. */ + struct timeval sa_time_diff; + /** Whether client time is ahead of server time. */ + int sa_time_diff_sign; + /** The 'P' and the 'N' flags as announced by para_server. */ + enum vss_status_flags vss_status; + /** Number of times the clock difference is to be checked. */ + unsigned clock_diff_count; + /** When to start the next check for clock difference. */ + struct timeval clock_diff_barrier; + /** Number of the audio format as announced by para_server. */ + int current_audio_format_num; +}; /** The array of status items sent by para_server. */ char *stat_item_values[NUM_STAT_ITEMS] = {NULL}; @@ -83,7 +125,6 @@ int audiod_status = AUDIOD_ON; struct audiod_args_info conf; static char *socket_name; -static FILE *logfile; static struct audio_format_info afi[NUM_AUDIO_FORMATS]; static struct signal_task signal_task_struct, *sig_task = &signal_task_struct; @@ -120,7 +161,7 @@ struct command_task { * \return The audio format number on success, -E_UNSUPPORTED_AUDIO_FORMAT if * \a name is not a supported audio format. */ -int get_audio_format_num(char *name) +int get_audio_format_num(const char *name) { int i; @@ -132,91 +173,89 @@ int get_audio_format_num(char *name) return -E_UNSUPPORTED_AUDIO_FORMAT; } -char *get_time_string(struct timeval *newest_stime) +char *get_time_string(int slot_num) { - struct timeval diff, adj_stream_start, tmp; - int total = 0, use_server_time = 1, - length_seconds = stat_task->length_seconds; + int ret, seconds = 0, length; + struct timeval *tmp, sum, sss, /* server stream start */ + wtime, /* now - writer start */ + rskip; /* receiver start - sss */ + struct slot_info *s = slot_num < 0? NULL : &slot[slot_num]; - if (!stat_task->playing) { - if (length_seconds) + if (audiod_status == AUDIOD_OFF) + goto empty; + if (!(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING)) { + if (stat_task->length_seconds) /* paused */ return NULL; - return make_message("%s:\n", status_item_list[SI_PLAY_TIME]); + goto empty; /* stopped */ + } + if (audiod_status == AUDIOD_ON && !s) + goto empty; + /* valid status items and playing */ + if (s) { /* writer active in this slot */ + length = s->seconds_total; + tmp = &s->server_stream_start; + } else { /* standby mode, rely on status items */ + length = stat_task->length_seconds; + tmp = &stat_task->server_stream_start; } - if (audiod_status == AUDIOD_OFF) - goto out; if (stat_task->sa_time_diff_sign > 0) - tv_diff(&stat_task->server_stream_start, &stat_task->sa_time_diff, - &adj_stream_start); + tv_diff(tmp, &stat_task->sa_time_diff, &sss); else - tv_add(&stat_task->server_stream_start, &stat_task->sa_time_diff, - &adj_stream_start); - tmp = adj_stream_start; - if (newest_stime && audiod_status == AUDIOD_ON) { - tv_diff(newest_stime, &adj_stream_start, &diff); - if (tv2ms(&diff) < 5000) { - tmp = *newest_stime; - use_server_time = 0; - } + tv_add(tmp, &stat_task->sa_time_diff, &sss); + if (!s) { + struct timeval diff; + tv_diff(now, &sss, &diff); + seconds = diff.tv_sec + stat_task->offset_seconds; + goto out; } - tv_diff(now, &tmp, &diff); - total = diff.tv_sec + stat_task->offset_seconds; - if (total > length_seconds) - total = length_seconds; - if (total < 0) - total = 0; + tv_diff(now, &s->wstime, &wtime); + seconds = s->offset_seconds; + ret = tv_diff(&s->rstime, &sss, &rskip); + if (ret > 0) { /* audiod was started in the middle of the stream */ + tv_add(&wtime, &rskip, &sum); + seconds += sum.tv_sec; + } else + seconds += wtime.tv_sec; out: + seconds = PARA_MIN(seconds, length); + seconds = PARA_MAX(seconds, 0); return make_message( - "%s: %s%d:%02d [%d:%02d] (%d%%/%d:%02d)\n", - status_item_list[SI_PLAY_TIME], - use_server_time? "~" : "", - total / 60, - total % 60, - (length_seconds - total) / 60, - (length_seconds - total) % 60, - length_seconds? (total * 100 + length_seconds / 2) / - length_seconds : 0, - length_seconds / 60, - length_seconds % 60 + "%s%d:%02d [%d:%02d] (%d%%/%d:%02d)", + s? "" : "~", + seconds / 60, + seconds % 60, + (length - seconds) / 60, + (length - seconds) % 60, + length? (seconds * 100 + length / 2) / length : 0, + length / 60, + length % 60 ); +empty: + return para_strdup(NULL); } -/** - * the log function of para_audiod - * - * \param ll loglevel - * \param fmt the format string - */ -__printf_2_3 void para_log(int ll, const char* fmt,...) +static int want_colors(void) { - va_list argp; - FILE *outfd; - struct tm *tm; - time_t t1; - char str[MAXLINE] = ""; - static char *hostname; - - if (ll < conf.loglevel_arg) - return; - if (!logfile && conf.daemon_given) - return; - if (!hostname) - hostname = para_hostname(); - outfd = logfile? logfile : stderr; - time(&t1); - tm = localtime(&t1); - strftime(str, MAXLINE, "%b %d %H:%M:%S", tm); - fprintf(outfd, "%s %s ", str, hostname); - if (conf.loglevel_arg <= INFO) - fprintf(outfd, "%i ", ll); - va_start(argp, fmt); - vfprintf(outfd, fmt, argp); - va_end(argp); + if (conf.color_arg == color_arg_no) + return 0; + if (conf.color_arg == color_arg_yes) + return 1; + if (conf.logfile_given) + return 0; + return isatty(STDERR_FILENO); } static void parse_config_or_die(void) { + int ret; char *config_file; + struct audiod_cmdline_parser_params params = { + .override = 0, + .initialize = 0, + .check_required = 1, + .check_ambiguity = 0, + .print_errors = 1 + }; if (conf.config_file_given) config_file = para_strdup(conf.config_file_arg); @@ -225,24 +264,15 @@ static void parse_config_or_die(void) config_file = make_message("%s/.paraslash/audiod.conf", home); free(home); } - if (conf.config_file_given && !file_exists(config_file)) { + 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; } - if (config_file) { - struct audiod_cmdline_parser_params params = { - .override = 0, - .initialize = 0, - .check_required = 1, - .check_ambiguity = 0, - .print_errors = 1 - }; - if (audiod_cmdline_parser_config_file(config_file, &conf, ¶ms)) { - PARA_EMERG_LOG("parse error in config file\n"); - goto err; - } - } + if (ret) + audiod_cmdline_parser_config_file(config_file, &conf, ¶ms); free(config_file); + daemon_set_loglevel(conf.loglevel_arg); return; err: free(config_file); @@ -256,7 +286,7 @@ static void setup_signal_handling(void) para_install_sighandler(SIGINT); para_install_sighandler(SIGTERM); para_install_sighandler(SIGHUP); - signal(SIGPIPE, SIG_IGN); + para_sigaction(SIGPIPE, SIG_IGN); } static void clear_slot(int slot_num) @@ -352,7 +382,7 @@ static void open_filters(int slot_num) PARA_INFO_LOG("opening %s filters\n", audio_formats[s->format]); s->fc = para_calloc(sizeof(struct filter_chain)); s->fc->filter_nodes = para_malloc(nf * sizeof(struct filter_node)); - s->fc->inbuf = s->receiver_node->buf; + s->fc->inbufp = &s->receiver_node->buf; s->fc->in_loaded = &s->receiver_node->loaded; s->fc->input_error = &s->receiver_node->task.error; s->fc->task.pre_select = filter_pre_select; @@ -372,7 +402,7 @@ static void open_filters(int slot_num) f->open(fn); PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n", audio_formats[s->format], i, nf, f->name, slot_num); - s->fc->outbuf = fn->buf; + s->fc->outbufp = &fn->buf; s->fc->out_loaded = &fn->loaded; } register_task(&s->fc->task); @@ -390,7 +420,7 @@ static void open_writers(int slot_num) else s->wng = wng_new(a->num_writers); if (s->fc) { - s->wng->buf = s->fc->outbuf; + s->wng->bufp = s->fc->outbufp; s->wng->loaded = s->fc->out_loaded; s->wng->input_error = &s->fc->task.error; s->wng->channels = &s->fc->channels; @@ -398,21 +428,23 @@ static void open_writers(int slot_num) s->fc->output_error = &s->wng->task.error; PARA_INFO_LOG("samplerate: %d\n", *s->wng->samplerate); } else { - s->wng->buf = s->receiver_node->buf; + s->wng->bufp = &s->receiver_node->buf; s->wng->loaded = &s->receiver_node->loaded; s->wng->input_error = &s->receiver_node->task.error; } for (i = 0; i < a->num_writers; i++) { s->wng->writer_nodes[i].conf = a->writer_conf[i]; - s->wng->writer_nodes[i].writer = a->writers[i]; + s->wng->writer_nodes[i].writer_num = a->writer_nums[i]; } ret = wng_open(s->wng); - if (ret < 0) { - PARA_ERROR_LOG("%s\n", para_strerror(-ret)); + if (ret < 0) return; - } s->wstime = *now; - activate_inactive_grab_clients(slot_num, s->format, s->fc); + s->server_stream_start = stat_task->server_stream_start.tv_sec? + stat_task->server_stream_start : *now; + s->offset_seconds = stat_task->offset_seconds; + s->seconds_total = stat_task->length_seconds; + activate_inactive_grab_clients(s->format, s->fc); } static int open_receiver(int format) @@ -443,6 +475,7 @@ static int open_receiver(int format) audio_formats[s->format], a->receiver->name, slot_num); rn->task.pre_select = a->receiver->pre_select; rn->task.post_select = a->receiver->post_select; + s->rstime = *now; sprintf(rn->task.status, "%s receiver node", rn->receiver->name); register_task(&rn->task); ret = 1; @@ -453,32 +486,54 @@ err: return ret; } +/* return: 0: Not running, 1: Running, -1: Running but eof (or error) */ static int receiver_running(int format) { - int i; + int i, ret = 0; FOR_EACH_SLOT(i) { struct slot_info *s = &slot[i]; - if (s->format == format && s->receiver_node) + if (s->format != format) + continue; + if (!s->receiver_node) + continue; + if (s->receiver_node->task.error >= 0) return 1; + ret = -1; } - return 0; + return ret; } -static int open_current_receiver(struct sched *s) +static void open_current_receiver(struct sched *s) { struct timeval diff; - int cafn = stat_task->current_audio_format_num; + int ret, cafn = stat_task->current_audio_format_num; if (cafn < 0 || !stat_task->ct) - return 0; - if (receiver_running(cafn)) - return 0; + return; + /* Do nothing if the 'N' flag is set or the 'P' flag is unset */ + if (stat_task->vss_status != VSS_STATUS_FLAG_PLAYING) + return; + ret = receiver_running(cafn); + if (ret > 0) /* already running and not eof */ + return; + if (ret < 0) { /* eof */ + /* + * para_server uses a zero start time during the announcement + * period, i.e. before it sends the first chunk. Wait until + * this period begins to avoid restarting the receiver that + * belongs to the file just completed. + */ + if (stat_task->server_stream_start.tv_sec) + return; + } if (tv_diff(now, &afi[cafn].restart_barrier, &diff) < 0) { + /* avoid busy loop */ s->timeout = diff; - return 0; + return; } - return open_receiver(cafn) < 0? 0 : 1; + /* start a new receiver */ + open_receiver(cafn); } static unsigned compute_time_diff(const struct timeval *status_time) @@ -523,42 +578,31 @@ out: return count; } -static int check_stat_line(char *line, __a_unused void *data) +static int update_item(int itemnum, char *buf) { - int itemnum; - size_t ilen = 0; long unsigned sec, usec; - char *tmp; - //PARA_INFO_LOG("line: %s\n", line); - if (!line) - return 1; - itemnum = stat_line_valid(line); - if (itemnum < 0) { - PARA_WARNING_LOG("invalid status line: %s\n", line); - return 1; - } if (stat_task->clock_diff_count && itemnum != SI_CURRENT_TIME) return 1; - tmp = make_message("%s\n", line); - stat_client_write(tmp, itemnum); - free(tmp); free(stat_item_values[itemnum]); - stat_item_values[itemnum] = para_strdup(line); - ilen = strlen(status_item_list[itemnum]); + stat_item_values[itemnum] = para_strdup(buf); + stat_client_write_item(itemnum); switch (itemnum) { - case SI_STATUS: - stat_task->playing = strstr(line, "playing")? 1 : 0; - PARA_INFO_LOG("stat task playing: %d\n", stat_task->playing); + case SI_STATUS_FLAGS: + stat_task->vss_status = 0; + if (strchr(buf, 'N')) + stat_task->vss_status |= VSS_STATUS_FLAG_NEXT; + if (strchr(buf, 'P')) + stat_task->vss_status |= VSS_STATUS_FLAG_PLAYING; break; case SI_OFFSET: - stat_task->offset_seconds = atoi(line + ilen + 1); + stat_task->offset_seconds = atoi(buf); break; case SI_SECONDS_TOTAL: - stat_task->length_seconds = atoi(line + ilen + 1); + stat_task->length_seconds = atoi(buf); break; case SI_STREAM_START: - if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) { + if (sscanf(buf, "%lu.%lu", &sec, &usec) == 2) { struct timeval a_start, delay; delay.tv_sec = conf.stream_delay_arg / 1000; delay.tv_usec = (conf.stream_delay_arg % 1000) * 1000; @@ -576,14 +620,14 @@ static int check_stat_line(char *line, __a_unused void *data) } break; case SI_CURRENT_TIME: - if (sscanf(line + ilen + 1, "%lu.%lu", &sec, &usec) == 2) { + if (sscanf(buf, "%lu.%lu", &sec, &usec) == 2) { struct timeval tv = {sec, usec}; compute_time_diff(&tv); } break; case SI_FORMAT: - stat_task->current_audio_format_num = get_audio_format_num( - line + ilen + 1); + stat_task->current_audio_format_num + = get_audio_format_num(buf); } return 1; } @@ -620,19 +664,18 @@ static int add_filter(int format, char *cmdline) return filter_num; } -static int init_writers(void) +static int parse_writer_args(void) { int i, ret, nw; char *cmd; struct audio_format_info *a; - init_supported_writers(); nw = PARA_MAX(1U, conf.writer_given); PARA_INFO_LOG("maximal number of writers: %d\n", nw); FOR_EACH_AUDIO_FORMAT(i) { a = &afi[i]; a->writer_conf = para_malloc(nw * sizeof(void *)); - a->writers = para_malloc(nw * sizeof(struct writer *)); + a->writer_nums = para_malloc(nw * sizeof(int)); a->num_writers = 0; } for (i = 0; i < conf.writer_given; i++) { @@ -648,7 +691,7 @@ static int init_writers(void) ret = writer_num; goto out; } - a->writers[nw] = &writers[writer_num]; + a->writer_nums[nw] = writer_num; a->writer_conf[nw] = wconf; PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats[ret], nw, writer_names[writer_num]); @@ -659,16 +702,12 @@ out: return ret; } -static int init_receivers(void) +static int parse_receiver_args(void) { int i, ret, receiver_num; char *cmd = NULL; struct audio_format_info *a; - for (i = 0; receivers[i].name; i++) { - PARA_INFO_LOG("initializing %s receiver\n", receivers[i].name); - receivers[i].init(&receivers[i]); - } for (i = conf.receiver_given - 1; i >= 0; i--) { char *arg = conf.receiver_arg[i]; char *recv_arg = strchr(arg, ':'); @@ -739,11 +778,10 @@ out: return ret; } -static int init_filters(void) +static int parse_filter_args(void) { int i, ret, nf; - filter_init(filters); nf = PARA_MAX(1U, conf.filter_given); PARA_INFO_LOG("maximal number of filters: %d\n", nf); FOR_EACH_AUDIO_FORMAT(i) { @@ -772,17 +810,17 @@ out: return ret; } -static int init_stream_io(void) +static int parse_stream_args(void) { int ret; - ret = init_writers(); + ret = parse_receiver_args(); if (ret < 0) return ret; - ret = init_receivers(); + ret = parse_filter_args(); if (ret < 0) return ret; - ret = init_filters(); + ret = parse_writer_args(); if (ret < 0) return ret; return 1; @@ -883,21 +921,15 @@ static void init_command_task(struct command_task *ct) static void close_stat_pipe(void) { - int i; - if (!stat_task->ct) return; client_close(stat_task->ct); stat_task->ct = NULL; - FOR_EACH_STATUS_ITEM(i) { - free(stat_item_values[i]); - stat_item_values[i] = NULL; - } - dump_empty_status(); + clear_and_dump_items(); stat_task->length_seconds = 0; stat_task->offset_seconds = 0; + stat_task->vss_status = 0; audiod_status_dump(); - stat_task->playing = 0; } /** @@ -958,7 +990,8 @@ static void start_stop_decoders(struct sched *s) FOR_EACH_SLOT(i) try_to_close_slot(i); - if (audiod_status != AUDIOD_ON || !stat_task->playing) + if (audiod_status != AUDIOD_ON || + !(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING)) return kill_all_decoders(-E_NOT_PLAYING); open_current_receiver(s); FOR_EACH_SLOT(i) { @@ -1016,7 +1049,7 @@ static void status_pre_select(struct sched *s, struct task *t) goto out; } if (st->ct) { - unsigned bytes_left; + int ret; if (st->ct->task.error < 0) { if (st->ct->task.error != -E_TASK_UNREGISTERED) goto out; @@ -1025,11 +1058,15 @@ static void status_pre_select(struct sched *s, struct task *t) } if (st->ct->status != CL_RECEIVING) goto out; - bytes_left = for_each_line(st->ct->buf, st->ct->loaded, - &check_stat_line, NULL); - if (st->ct->loaded != bytes_left) { + ret = for_each_stat_item(st->ct->buf, st->ct->loaded, + update_item); + if (ret < 0) { + st->ct->task.error = ret; + goto out; + } + if (st->ct->loaded != ret) { st->last_status_read = *now; - st->ct->loaded = bytes_left; + st->ct->loaded = ret; } else { struct timeval diff; tv_diff(now, &st->last_status_read, &diff); @@ -1041,25 +1078,23 @@ static void status_pre_select(struct sched *s, struct task *t) if (tv_diff(now, &st->restart_barrier, NULL) < 0) goto out; if (st->clock_diff_count) { /* get status only one time */ - char *argv[] = {"audiod", "stat", "1", NULL}; - int argc = 3; + char *argv[] = {"audiod", "--", "stat", "-p", "1", NULL}; + int argc = 5; PARA_INFO_LOG("clock diff count: %d\n", st->clock_diff_count); st->clock_diff_count--; - client_open(argc, argv, &st->ct); + client_open(argc, argv, &st->ct, NULL); set_stat_task_restart_barrier(2); } else { - char *argv[] = {"audiod", "stat", NULL}; - int argc = 2; - client_open(argc, argv, &st->ct); + char *argv[] = {"audiod", "--", "stat", "-p", NULL}; + int argc = 4; + client_open(argc, argv, &st->ct, NULL); set_stat_task_restart_barrier(5); } free(stat_item_values[SI_BASENAME]); - stat_item_values[SI_BASENAME] = make_message( - "%s: no connection to para_server\n", - status_item_list[SI_BASENAME]); - stat_client_write(stat_item_values[SI_BASENAME], - SI_BASENAME); + stat_item_values[SI_BASENAME] = para_strdup( + "no connection to para_server"); + stat_client_write_item(SI_BASENAME); st->last_status_read = *now; out: start_stop_decoders(s); @@ -1109,6 +1144,20 @@ __noreturn static void print_help_and_die(void) exit(0); } +static void init_colors_or_die(void) +{ + int ret, i; + + if (!want_colors()) + return; + daemon_set_default_log_colors(); + daemon_set_flag(DF_COLOR_LOG); + for (i = 0; i < conf.log_color_given; i++) { + ret = daemon_set_log_color(conf.log_color_arg[i]); + if (ret < 0) + exit(EXIT_FAILURE); + } +} /** * the main function of para_audiod @@ -1134,20 +1183,31 @@ int main(int argc, char *argv[]) }; valid_fd_012(); - audiod_cmdline_parser_ext(argc, argv, &conf, ¶ms); + if (audiod_cmdline_parser_ext(argc, argv, &conf, ¶ms)) + exit(EXIT_FAILURE); HANDLE_VERSION_FLAG("audiod", conf); - para_drop_privileges(conf.user_arg, conf.group_arg); - parse_config_or_die(); - if (conf.logfile_given) - logfile = open_log(conf.logfile_arg); - i = init_stream_io(); + /* init receivers/filters/writers early to make help work */ + recv_init(); + filter_init(); + writer_init(); if (conf.help_given || conf.detailed_help_given) print_help_and_die(); - if (i < 0) { - PARA_EMERG_LOG("init stream io error: %s\n", para_strerror(-i)); + drop_privileges_or_die(conf.user_arg, conf.group_arg); + parse_config_or_die(); + init_colors_or_die(); + daemon_set_flag(DF_LOG_TIME); + daemon_set_flag(DF_LOG_HOSTNAME); + daemon_set_flag(DF_LOG_LL); + if (conf.logfile_given) { + daemon_set_logfile(conf.logfile_arg); + daemon_open_log_or_die(); + } + ret = parse_stream_args(); + if (ret < 0) { + PARA_EMERG_LOG("%s\n", para_strerror(-ret)); exit(EXIT_FAILURE); } - log_welcome("para_audiod", conf.loglevel_arg); + log_welcome("para_audiod"); server_uptime(UPTIME_SET); set_initial_status(); FOR_EACH_SLOT(i) @@ -1160,7 +1220,7 @@ int main(int argc, char *argv[]) init_command_task(cmd_task); if (conf.daemon_given) - daemon_init(); + daemonize(); register_task(&sig_task->task); register_task(&cmd_task->task);