From decf72f578ef0cb7a3bc3a81834ef64c2b19c91f Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@systemlinux.org>
Date: Mon, 11 Jan 2010 01:06:39 +0100
Subject: [PATCH] audiod: Timing fixes.

---
 audiod.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/audiod.c b/audiod.c
index f805b00e..a6408d87 100644
--- a/audiod.c
+++ b/audiod.c
@@ -313,6 +313,7 @@ static void close_receiver(int slot_num)
 {
 	struct slot_info *s = &slot[slot_num];
 	struct audio_format_info *a;
+	struct timeval restart_delay = {0, 200 * 1000};
 
 	if (s->format < 0 || !s->receiver_node)
 		return;
@@ -323,7 +324,7 @@ static void close_receiver(int slot_num)
 	btr_free_node(s->receiver_node->btrn);
 	free(s->receiver_node);
 	s->receiver_node = NULL;
-	stat_task->current_audio_format_num = -1;
+	tv_add(now, &restart_delay, &afi[s->format].restart_barrier);
 }
 
 static void writer_cleanup(struct writer_node *wn)
@@ -586,11 +587,13 @@ static int open_current_receiver(struct sched *s)
 		 * belongs to the file just completed.
 		 */
 		if (stat_task->server_stream_start.tv_sec != 0)
-			return -1;
+			sched_request_timeout_ms(100, s);
 	}
 	if (tv_diff(now, &afi[cafn].restart_barrier, &diff) < 0) {
-		/* avoid busy loop */
-		s->timeout = diff;
+		if (tv_diff(&s->timeout, &diff, NULL) > 0)
+			s->timeout = diff;
+		else
+			sched_min_delay(s);
 		return -1;
 	}
 	/* start a new receiver */
@@ -1029,27 +1032,28 @@ static void set_stat_task_restart_barrier(unsigned seconds)
 	tv_add(now, &delay, &stat_task->restart_barrier);
 }
 
-static void try_to_close_slot(int slot_num)
+static bool try_to_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 != -E_TASK_UNREGISTERED)
-		return;
+		return false;
 	for (i = 0; i < a->num_filters; i++)
 		if (s->fns && s->fns[i].task.error != -E_TASK_UNREGISTERED)
-			return;
+			return false;
 	for (i = 0; i < a->num_writers; i++)
 		if (s->wns && s->wns[i].task.error != -E_TASK_UNREGISTERED)
-			return;
+			return false;
 	PARA_INFO_LOG("closing slot %d\n", slot_num);
 	close_writers(s);
 	_close_filters(s);
 	close_receiver(slot_num);
 	clear_slot(slot_num);
+	return true;
 }
 
 /*
@@ -1063,7 +1067,8 @@ static void start_stop_decoders(struct sched *s)
 	struct audio_format_info *a;
 
 	FOR_EACH_SLOT(i)
-		try_to_close_slot(i);
+		if (try_to_close_slot(i))
+			sched_min_delay(s);
 //	if (audiod_status != AUDIOD_ON ||
 //			!(stat_task->vss_status & VSS_STATUS_FLAG_PLAYING))
 //		return kill_all_decoders(-E_NOT_PLAYING);
@@ -1077,8 +1082,7 @@ static void start_stop_decoders(struct sched *s)
 	open_writers(sl);
 	activate_grab_clients();
 	btr_log_tree(sl->receiver_node->btrn, LL_NOTICE);
-	s->timeout.tv_sec = 0;
-	s->timeout.tv_usec = 1;
+	sched_min_delay(s);
 }
 
 /* restart the client task if necessary */
@@ -1129,18 +1133,20 @@ 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", "-p", "1", NULL};
+		char *argv[] = {"audiod", "--", "stat", "-p", "-n=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, NULL);
 		set_stat_task_restart_barrier(2);
+		sched_min_delay(s);
 
 	} else {
 		char *argv[] = {"audiod", "--", "stat", "-p", NULL};
 		int argc = 4;
 		client_open(argc, argv, &st->ct, NULL);
 		set_stat_task_restart_barrier(5);
+		sched_min_delay(s);
 	}
 	free(stat_item_values[SI_BASENAME]);
 	stat_item_values[SI_BASENAME] = para_strdup(
-- 
2.30.2