From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Sun, 1 Dec 2019 01:27:16 +0000 (+0900)
Subject: ctl: card: add virtual method to handle disconnection of sound card
X-Git-Tag: v0.1.0~390
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=f8bfade4f139bffb062a5adae6111076e4b1af0f;p=alsa-gobject.git

ctl: card: add virtual method to handle disconnection of sound card
---

diff --git a/src/ctl/card.c b/src/ctl/card.c
index 0380918..1adf01a 100644
--- a/src/ctl/card.c
+++ b/src/ctl/card.c
@@ -135,7 +135,7 @@ static void alsactl_card_class_init(ALSACtlCardClass *klass)
         g_signal_new("handle-disconnection",
                      G_OBJECT_CLASS_TYPE(klass),
                      G_SIGNAL_RUN_LAST,
-                     0,
+                     G_STRUCT_OFFSET(ALSACtlCardClass, handle_disconnection),
                      NULL, NULL,
                      g_cclosure_marshal_VOID__VOID,
                      G_TYPE_NONE, 0, G_TYPE_NONE, 0);
diff --git a/src/ctl/card.h b/src/ctl/card.h
index eb48633..72446de 100644
--- a/src/ctl/card.h
+++ b/src/ctl/card.h
@@ -58,6 +58,17 @@ struct _ALSACtlCardClass {
      */
     void (*handle_elem_event)(ALSACtlCard *self, const ALSACtlElemId *elem_id,
                               ALSACtlEventMaskFlag events);
+
+    /**
+     * ALSACtlCardClass::handle_disconnection:
+     * @self: A #ALSACtlCard.
+     *
+     * When the sound card is not available anymore due to unbinding driver or
+     * hot unplugging, this signal is emit. The owner of this object should
+     * call g_object_free() as quickly as possible to release ALSA control
+     * character device.
+     */
+    void (*handle_disconnection)(ALSACtlCard *self);
 };
 
 GType alsactl_card_get_type() G_GNUC_CONST;
diff --git a/tests/alsactl-card b/tests/alsactl-card
index d4276e1..b949108 100644
--- a/tests/alsactl-card
+++ b/tests/alsactl-card
@@ -29,6 +29,7 @@ methods = (
     'remove_elems',
     'create_source',
     'do_handle_elem_event',
+    'do_handle_disconnection',
 )
 signals = (
     'handle-elem-event',