/*
- * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2013 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
-/** \file audiod.c the paraslash's audio daemon */
+/** \file audiod.c The paraslash's audio daemon. */
#include <regex.h>
#include <sys/types.h>
#include <signal.h>
-#include <stdbool.h>
#include "para.h"
#include "error.h"
#include "list.h"
#include "sched.h"
#include "ggo.h"
-#include "recv.h"
#include "buffer_tree.h"
+#include "recv.h"
#include "filter.h"
#include "grab_client.h"
#include "client.cmdline.h"
#include "signal.h"
#include "version.h"
+__printf_2_3 void (*para_log)(int, const char*, ...) = daemon_log;
/** define the array of error lists needed by para_audiod */
INIT_AUDIOD_ERRLISTS;
/** define the array containing all supported audio formats */
const char *audio_formats[] = {AUDIOD_AUDIO_FORMAT_ARRAY NULL};
+DEFINE_RECEIVER_ARRAY;
+
/** Defines how audiod handles one supported audio format. */
struct audio_format_info {
/** pointer to the receiver for this audio format */
VSS_STATUS_FLAG_PLAYING = 2,
};
+/**
+ * The scheduler instance of para_audiod.
+ *
+ * This is needed also in audiod_command.c (for the tasks command), so it can
+ * not be made static.
+ */
+struct sched sched = {.max_fileno = 0};
+
/**
* The task for obtaining para_server's status (para_client stat).
*
return -E_UNSUPPORTED_AUDIO_FORMAT;
}
+static int get_matching_audio_format_nums(const char *re)
+{
+ int i, ret;
+ regex_t preg;
+
+ ret = para_regcomp(&preg, re, REG_EXTENDED | REG_NOSUB);
+ if (ret < 0)
+ return ret;
+ ret = 0;
+ FOR_EACH_AUDIO_FORMAT(i)
+ if (regexec(&preg, audio_formats[i], 0, NULL, 0) != REG_NOMATCH)
+ ret |= (1 << i);
+ regfree(&preg);
+ return ret;
+}
+
/**
* Compute the play time based on information of the given slot.
*
*/
length = stat_task->length_seconds;
tmp = &stat_task->server_stream_start;
- if (s && s->wns) { /* writer active in this slot */
+ if (s && s->wns && s->wns[0].btrn) { /* writer active in this slot */
btr_get_node_start(s->wns[0].btrn, &wstime);
if (wstime.tv_sec != 0) { /* writer wrote something */
if (s->server_stream_start.tv_sec == 0) {
tv_diff(tmp, &stat_task->sa_time_diff, &sss);
else
tv_add(tmp, &stat_task->sa_time_diff, &sss);
- if (!s || !s->wns) {
+ if (!s || !s->wns || !s->wns[0].btrn) {
struct timeval diff;
tv_diff(now, &sss, &diff);
seconds = diff.tv_sec + stat_task->offset_seconds;
tv_diff(now, &wstime, &wtime);
//PARA_CRIT_LOG("offset %d\n", s->offset_seconds);
seconds = s->offset_seconds;
- btr_get_node_start(s->receiver_node->btrn, &rstime);
- ret = tv_diff(&rstime, &sss, &rskip);
- if (ret > 0) { /* audiod was started in the middle of the stream */
- tv_add(&wtime, &rskip, &sum);
- seconds += sum.tv_sec;
+ if (s->receiver_node->btrn) {
+ btr_get_node_start(s->receiver_node->btrn, &rstime);
+ ret = tv_diff(&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;
} else
seconds += wtime.tv_sec;
out:
length / 60,
length % 60
);
- PARA_DEBUG_LOG("slot %d: %s\n", slot_num, msg);
+ //PARA_DEBUG_LOG("slot %d: %s\n", slot_num, msg);
return msg;
empty:
return para_strdup(NULL);
PARA_NOTICE_LOG("closing %s receiver in slot %d\n",
audio_formats[s->format], slot_num);
a->receiver->close(s->receiver_node);
- btr_free_node(s->receiver_node->btrn);
+ btr_remove_node(&s->receiver_node->btrn);
free(s->receiver_node);
s->receiver_node = NULL;
tv_add(now, &(struct timeval)EMBRACE(0, 200 * 1000),
w = writers + wn->writer_num;
PARA_INFO_LOG("closing %s\n", writer_names[wn->writer_num]);
w->close(wn);
- btr_free_node(wn->btrn);
+ btr_remove_node(&wn->btrn);
}
static void close_writers(struct slot_info *s)
f = filters + fn->filter_num;
if (f->close)
f->close(fn);
- btr_free_node(fn->btrn);
+ btr_remove_node(&fn->btrn);
}
free(s->fns);
s->fns = NULL;
}
-/*
- * Whenever a task commits suicide by returning from post_select with t->error
- * < 0, it also removes its btr node. We do exactly that to kill a running
- * task. Note that the scheduler checks t->error also _before_ each pre/post
- * select call, so the victim will never be scheduled again.
- */
-static void kill_btrn(struct btr_node *btrn, struct task *t, int error)
-{
- if (t->error < 0)
- return;
- t->error = error;
- btr_remove_node(btrn);
-}
-
-static void kill_all_decoders(int error)
+static void notify_receivers(int error)
{
- int i, j;
+ int i;
FOR_EACH_SLOT(i) {
- struct slot_info *s = &slot[i];
- struct audio_format_info *a;
+ struct slot_info *s = slot + i;
if (s->format < 0)
continue;
- a = afi + s->format;
- if (s->wns)
- for (j = 0; j < a->num_writers; j++)
- kill_btrn(s->wns[j].btrn, &s->wns[j].task, error);
- if (s->fns)
- for (j = 0; j < a->num_writers; j++)
- kill_btrn(s->fns[j].btrn, &s->wns[j].task, error);
- if (s->receiver_node)
- kill_btrn(s->receiver_node->btrn, &s->receiver_node->task,
- error);
+ if (!s->receiver_node)
+ continue;
+ task_notify(&s->receiver_node->task, error);
}
}
.handler = f->execute, .context = fn));
f->open(fn);
- register_task(&fn->task);
+ register_task(&sched, &fn->task);
parent = fn->btrn;
PARA_NOTICE_LOG("%s filter %d/%d (%s) started in slot %d\n",
audio_formats[s->format], i, nf, f->name, (int)(s - slot));
assert(s->wns == NULL);
s->wns = para_calloc(PARA_MAX(1U, a->num_writers)
* sizeof(struct writer_node));
- if (a->num_writers == 0)
- setup_writer_node(NULL, parent, s->wns);
- else {
- PARA_INFO_LOG("opening %s writers\n", audio_formats[s->format]);
- for (i = 0; i < a->num_writers; i++) {
- wn = s->wns + i;
- wn->conf = a->writer_conf[i];
- wn->writer_num = a->writer_nums[i];
- register_writer_node(wn, parent);
- }
+ PARA_INFO_LOG("opening %s writers\n", audio_formats[s->format]);
+ for (i = 0; i < a->num_writers; i++) {
+ wn = s->wns + i;
+ wn->conf = a->writer_conf[i];
+ wn->writer_num = a->writer_nums[i];
+ register_writer_node(wn, parent, &sched);
}
}
EMBRACE(.name = r->name, .context = rn));
ret = r->open(rn);
if (ret < 0) {
- btr_free_node(rn->btrn);
+ btr_remove_node(&rn->btrn);
free(rn);
return ret;
}
rn->task.pre_select = r->pre_select;
rn->task.post_select = r->post_select;
sprintf(rn->task.status, "%s receiver node", r->name);
- register_task(&rn->task);
+ register_task(&sched, &rn->task);
return slot_num;
}
static int parse_stream_command(const char *txt, char **cmd)
{
- char *p = strchr(txt, ':');
- int i;
+ int ret, len;
+ char *re, *p = strchr(txt, ':');
if (!p)
return -E_MISSING_COLON;
- p++;
- FOR_EACH_AUDIO_FORMAT(i) {
- if (strncmp(txt, audio_formats[i], strlen(audio_formats[i])))
- continue;
- *cmd = p;
- return i;
- }
- return -E_UNSUPPORTED_AUDIO_FORMAT;
+ *cmd = p + 1;
+ len = p - txt;
+ re = malloc(len + 1);
+ strncpy(re, txt, len);
+ re[len] = '\0';
+ ret = get_matching_audio_format_nums(re);
+ free(re);
+ return ret;
}
static int add_filter(int format, char *cmdline)
{
struct audio_format_info *a = &afi[format];
int filter_num, nf = a->num_filters;
+ void *cfg;
- filter_num = check_filter_arg(cmdline, &a->filter_conf[nf]);
+ filter_num = check_filter_arg(cmdline, &cfg);
if (filter_num < 0)
return filter_num;
+ a->filter_conf = para_realloc(a->filter_conf,
+ (nf + 1) * sizeof(void *));
+ a->filter_nums = para_realloc(a->filter_nums,
+ (nf + 1) * sizeof(unsigned));
a->filter_nums[nf] = filter_num;
+ a->filter_conf[nf] = cfg;
a->num_filters++;
PARA_INFO_LOG("%s filter %d: %s\n", audio_formats[format], nf,
filters[filter_num].name);
static int parse_writer_args(void)
{
- int i, ret, nw;
+ int i, ret;
char *cmd;
struct audio_format_info *a;
- 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->writer_nums = para_malloc(nw * sizeof(int));
- a->num_writers = 0;
- }
for (i = 0; i < conf.writer_given; i++) {
void *wconf;
- int writer_num;
+ int j, nw, writer_num, af_mask;
+
ret = parse_stream_command(conf.writer_arg[i], &cmd);
if (ret < 0)
- goto out;
- a = &afi[ret];
- nw = a->num_writers;
- wconf = check_writer_arg(cmd, &writer_num);
- if (!wconf) {
- ret = writer_num;
- goto out;
+ return ret;
+ af_mask = ret;
+ FOR_EACH_AUDIO_FORMAT(j) {
+ a = afi + j;
+ if ((af_mask & (1 << j)) == 0) /* no match */
+ continue;
+ wconf = check_writer_arg_or_die(cmd, &writer_num);
+ nw = a->num_writers;
+ a->writer_nums = para_realloc(a->writer_nums, (nw + 1) * sizeof(int));
+ a->writer_conf = para_realloc(a->writer_conf, (nw + 1) * sizeof(void *));
+ a->writer_nums[nw] = writer_num;
+ a->writer_conf[nw] = wconf;
+ PARA_INFO_LOG("%s writer #%d: %s\n", audio_formats[j],
+ nw, writer_names[writer_num]);
+ a->num_writers++;
}
- 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]);
- a->num_writers++;
}
- ret = 1;
-out:
- return ret;
+ /* Use default writer for audio formats which are not yet set up. */
+ FOR_EACH_AUDIO_FORMAT(i) {
+ void *writer_conf;
+ int writer_num;
+ a = afi + i;
+ if (a->num_writers > 0)
+ continue; /* already set up */
+ writer_conf = check_writer_arg_or_die(NULL, &writer_num);
+ a->writer_nums = para_malloc(sizeof(int));
+ a->writer_nums[0] = writer_num;
+ a->writer_conf = para_malloc(sizeof(void *));
+ a->writer_conf[0] = writer_conf;
+ a->num_writers = 1;
+ PARA_INFO_LOG("%s writer: %s (default)\n", audio_formats[i],
+ writer_names[writer_num]);
+ }
+ return 1;
}
static int parse_receiver_args(void)
struct audio_format_info *a;
for (i = conf.receiver_given - 1; i >= 0; i--) {
- char *arg = conf.receiver_arg[i];
- char *recv_arg = strchr(arg, ':');
- ret = -E_MISSING_COLON;
- if (!recv_arg)
- goto out;
- *recv_arg = '\0';
- recv_arg++;
- ret = get_audio_format_num(arg);
+ char *arg;
+ int j, af_mask;
+
+ ret = parse_stream_command(conf.receiver_arg[i], &arg);
if (ret < 0)
goto out;
- /*
- * If multiple receivers are given for this audio format, the
- * last one wins and we have to free the previous receiver
- * config here. Since we are iterating backwards, the winning
- * receiver arg is in fact the first one given.
- */
- if (afi[ret].receiver_conf)
- afi[ret].receiver->free_config(afi[ret].receiver_conf);
- afi[ret].receiver_conf = check_receiver_arg(recv_arg, &receiver_num);
- if (!afi[ret].receiver_conf) {
+ af_mask = ret;
+ FOR_EACH_AUDIO_FORMAT(j) {
+ a = afi + j;
+ if ((af_mask & (1 << j)) == 0) /* no match */
+ continue;
+ /*
+ * If multiple receivers are given for this audio format, the
+ * last one wins and we have to free the previous receiver
+ * config here. Since we are iterating backwards, the winning
+ * receiver arg is in fact the first one given.
+ */
+ if (a->receiver_conf)
+ a->receiver->free_config(a->receiver_conf);
+ a->receiver_conf = check_receiver_arg(arg, &receiver_num);
ret = -E_RECV_SYNTAX;
- goto out;
+ if (!a->receiver_conf)
+ goto out;
+ a->receiver = receivers + receiver_num;
}
- afi[ret].receiver = &receivers[receiver_num];
}
/*
* Use the first available receiver with no arguments for those audio
return -E_RECV_SYNTAX;
a->receiver = &receivers[receiver_num];
}
+ FOR_EACH_AUDIO_FORMAT(i) {
+ a = afi + i;
+ PARA_INFO_LOG("receiving %s streams via %s receiver\n",
+ audio_formats[i], a->receiver->name);
+ }
ret = 1;
out:
free(cmd);
if (a->num_filters)
continue; /* no default -- nothing to to */
/*
- * If udp is used to receive this audiod format, add fecdec as
- * the first filter.
+ * udp and dccp streams are fec-encoded, so add fecdec as the
+ * first filter.
*/
if (strcmp(afi[i].receiver->name, "udp") == 0 ||
strcmp(afi[i].receiver->name, "dccp") == 0) {
static int parse_filter_args(void)
{
- int i, ret, nf;
+ int i, j, ret, af_mask;
- nf = PARA_MAX(2U, conf.filter_given);
- PARA_INFO_LOG("maximal number of filters: %d\n", nf);
- FOR_EACH_AUDIO_FORMAT(i) {
- afi[i].filter_conf = para_malloc(nf * sizeof(void *));
- afi[i].filter_nums = para_malloc(nf * sizeof(unsigned));
- }
- if (!conf.no_default_filters_given)
- return init_default_filters();
for (i = 0; i < conf.filter_given; i++) {
- char *arg = conf.filter_arg[i];
- char *filter_name = strchr(arg, ':');
- ret = -E_MISSING_COLON;
- if (!filter_name)
- goto out;
- *filter_name = '\0';
- filter_name++;
- ret = get_audio_format_num(arg);
- if (ret < 0)
- goto out;
- ret = add_filter(ret, filter_name);
+ char *arg;
+ ret = parse_stream_command(conf.filter_arg[i], &arg);
if (ret < 0)
goto out;
+ af_mask = ret;
+ FOR_EACH_AUDIO_FORMAT(j) {
+ if ((af_mask & (1 << j)) == 0) /* no match */
+ continue;
+ ret = add_filter(j, arg);
+ if (ret < 0)
+ goto out;
+ }
}
ret = init_default_filters(); /* use default values for the rest */
out:
{
if (!stat_task->ct)
return;
- btr_free_node(stat_task->ct->btrn);
client_close(stat_task->ct);
stat_task->ct = NULL;
clear_and_dump_items();
tv_add(now, &delay, &stat_task->restart_barrier);
}
-static void try_to_close_slot(int slot_num)
+static bool must_close_slot(int slot_num)
{
struct slot_info *s = &slot[slot_num];
struct audio_format_info *a = afi + s->format;
int i;
if (s->format < 0)
- return;
+ return false;
if (s->receiver_node && s->receiver_node->task.error >= 0)
- return;
+ return false;
for (i = 0; i < a->num_filters; i++)
if (s->fns && s->fns[i].task.error >= 0)
- return;
+ return false;
if (a->num_writers > 0) {
for (i = 0; i < a->num_writers; i++)
if (s->wns && s->wns[i].task.error >= 0)
- return;
+ return false;
} else {
if (s->wns && s->wns[0].task.error >= 0)
- return;
+ return false;
+ }
+ return true;
+}
+
+static void close_unused_slots(void)
+{
+ int i;
+
+ FOR_EACH_SLOT(i) {
+ struct slot_info *s = slot + i;
+ if (!must_close_slot(i))
+ continue;
+ PARA_INFO_LOG("closing slot %d\n", i);
+ close_writers(s);
+ close_filters(s);
+ close_receiver(i);
+ clear_slot(i);
}
- PARA_INFO_LOG("closing slot %d\n", slot_num);
- close_writers(s);
- close_filters(s);
- close_receiver(slot_num);
- clear_slot(slot_num);
}
/*
*/
static void start_stop_decoders(void)
{
- int i, ret;
+ int ret;
struct slot_info *sl;
struct audio_format_info *a;
- FOR_EACH_SLOT(i)
- try_to_close_slot(i);
+ close_unused_slots();
if (audiod_status != AUDIOD_ON ||
!(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING))
- return kill_all_decoders(-E_NOT_PLAYING);
+ return notify_receivers(E_NOT_PLAYING);
if (!must_start_decoder())
return;
ret = open_receiver(stat_task->current_audio_format_num);
if (a->num_filters)
open_filters(sl);
open_writers(sl);
- activate_grab_clients();
+ activate_grab_clients(&sched);
btr_log_tree(sl->receiver_node->btrn, LL_NOTICE);
}
static void status_pre_select(struct sched *s, struct task *t)
{
struct status_task *st = container_of(t, struct status_task, task);
- int ret, cafn = stat_task->current_audio_format_num;
+ int i, ret, cafn = stat_task->current_audio_format_num;
if (must_start_decoder())
goto min_delay;
- ret = btr_node_status(st->btrn, 0, BTR_NT_LEAF);
+ FOR_EACH_SLOT(i)
+ if (must_close_slot(i))
+ goto min_delay;
+ ret = btr_node_status(st->btrn, st->min_iqs, BTR_NT_LEAF);
if (ret > 0)
goto min_delay;
if (st->ct && audiod_status == AUDIOD_OFF)
}
/* restart the client task if necessary */
-static void status_post_select(__a_unused struct sched *s, struct task *t)
+static void status_post_select(struct sched *s, struct task *t)
{
struct status_task *st = container_of(t, struct status_task, task);
if (!st->ct)
goto out;
if (st->ct->task.error >= 0) {
- kill_btrn(st->ct->btrn, &st->ct->task, -E_AUDIOD_OFF);
+ task_notify(&st->ct->task, E_AUDIOD_OFF);
goto out;
}
- if (st->ct->task.error >= 0)
- goto out;
close_stat_pipe();
st->clock_diff_count = conf.clock_diff_count_arg;
goto out;
size_t sz;
int ret;
if (st->ct->task.error < 0) {
- if (st->ct->task.error >= 0)
- goto out;
close_stat_pipe();
goto out;
}
struct timeval diff;
tv_diff(now, &st->last_status_read, &diff);
if (diff.tv_sec > 61)
- kill_btrn(st->ct->btrn, &st->ct->task,
- -E_STATUS_TIMEOUT);
+ task_notify(&st->ct->task, E_AUDIOD_OFF);
goto out;
}
btr_merge(st->btrn, st->min_iqs);
sz = btr_next_buffer(st->btrn, &buf);
ret = for_each_stat_item(buf, sz, update_item);
if (ret < 0) {
- kill_btrn(st->ct->btrn, &st->ct->task, ret);
+ task_notify(&st->ct->task, E_AUDIOD_OFF);
goto out;
}
if (sz != ret) {
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, NULL, NULL, st->btrn);
+ client_open(argc, argv, &st->ct, NULL, NULL, st->btrn, s);
set_stat_task_restart_barrier(2);
} else {
char *argv[] = {"audiod", "--", "stat", "-p", NULL};
int argc = 4;
- client_open(argc, argv, &st->ct, NULL, NULL, st->btrn);
+ client_open(argc, argv, &st->ct, NULL, NULL, st->btrn, s);
set_stat_task_restart_barrier(5);
}
free(stat_item_values[SI_BASENAME]);
int main(int argc, char *argv[])
{
int ret, i;
- static struct sched s;
struct command_task command_task_struct, *cmd_task = &command_task_struct;
struct audiod_cmdline_parser_params params = {
.override = 0,
exit(EXIT_FAILURE);
}
log_welcome("para_audiod");
- server_uptime(UPTIME_SET);
+ set_server_start_time(NULL);
set_initial_status();
FOR_EACH_SLOT(i)
clear_slot(i);
init_command_task(cmd_task);
if (conf.daemon_given)
- daemonize();
-
- register_task(&sig_task->task);
- register_task(&cmd_task->task);
- register_task(&stat_task->task);
- s.default_timeout.tv_sec = 2;
- s.default_timeout.tv_usec = 999 * 1000;
- ret = schedule(&s);
+ daemonize(false /* parent exits immediately */);
+
+ register_task(&sched, &sig_task->task);
+ register_task(&sched, &cmd_task->task);
+ register_task(&sched, &stat_task->task);
+ sched.default_timeout.tv_sec = 2;
+ sched.default_timeout.tv_usec = 999 * 1000;
+ ret = schedule(&sched);
PARA_EMERG_LOG("%s\n", para_strerror(-ret));
return EXIT_FAILURE;
projects / paraslash.git / blobdiff