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-rw-r--r--src/event_pipe.h3
-rw-r--r--src/volume.c16
2 files changed, 19 insertions, 0 deletions
diff --git a/src/event_pipe.h b/src/event_pipe.h
index 33f92d440..4614ef25c 100644
--- a/src/event_pipe.h
+++ b/src/event_pipe.h
@@ -41,6 +41,9 @@ enum pipe_event {
/** SIGHUP received: reload configuration, roll log file */
PIPE_EVENT_RELOAD,
+ /** a hardware mixer plugin has detected a change */
+ PIPE_EVENT_MIXER,
+
PIPE_EVENT_MAX
};
diff --git a/src/volume.c b/src/volume.c
index 8b33f592d..1be0705af 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)