From b8ccc885c883a24265cd49de385b61d368a1b66f Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Wed, 21 Oct 2009 09:48:37 +0200
Subject: volume: added PIPE_EVENT_MIXER

Flush the hardware volume cache, and send the MIXER idle event.  This
allows mixer plugins to detect volume changes.
---
 src/volume.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/volume.c')

diff --git a/src/volume.c b/src/volume.c
index 8b33f592..1be0705a 100644
--- a/src/volume.c
+++ b/src/volume.c
@@ -27,6 +27,7 @@
 #include "mixer_control.h"
 #include "mixer_all.h"
 #include "mixer_type.h"
+#include "event_pipe.h"
 
 #include <glib.h>
 
@@ -47,6 +48,19 @@ static int last_hardware_volume = -1;
 /** the age of #last_hardware_volume */
 static GTimer *hardware_volume_timer;
 
+/**
+ * Handler for #PIPE_EVENT_MIXER.
+ */
+static void
+mixer_event_callback(void)
+{
+	/* flush the hardware volume cache */
+	last_hardware_volume = -1;
+
+	/* notify clients */
+	idle_add(IDLE_MIXER);
+}
+
 void volume_finish(void)
 {
 	g_timer_destroy(hardware_volume_timer);
@@ -55,6 +69,8 @@ void volume_finish(void)
 void volume_init(void)
 {
 	hardware_volume_timer = g_timer_new();
+
+	event_pipe_register(PIPE_EVENT_MIXER, mixer_event_callback);
 }
 
 int volume_level_get(void)
-- 
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