From 06c81d1dfa4758b7dcccb76d2aac88f564cf5073 Mon Sep 17 00:00:00 2001
From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Sun, 9 Feb 2020 12:20:53 +0900
Subject: [PATCH] timer: user_instance: add an API to get information of
 instance

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 src/timer/alsatimer.map       |  1 +
 src/timer/instance-info.c     | 13 ++++++++++---
 src/timer/privates.h          |  4 ++++
 src/timer/user-instance.c     | 27 +++++++++++++++++++++++++++
 src/timer/user-instance.h     |  5 +++++
 tests/alsatimer-user-instance |  1 +
 6 files changed, 48 insertions(+), 3 deletions(-)

diff --git a/src/timer/alsatimer.map b/src/timer/alsatimer.map
index 9b0234a..ee3ac32 100644
--- a/src/timer/alsatimer.map
+++ b/src/timer/alsatimer.map
@@ -32,6 +32,7 @@ ALSA_GOBJECT_0_0_0 {
     "alsatimer_user_instance_open";
     "alsatimer_user_instance_attach";
     "alsatimer_user_instance_attach_as_slave";
+    "alsatimer_user_instance_get_info";
 
     "alsatimer_instance_info_get_type";
   local:
diff --git a/src/timer/instance-info.c b/src/timer/instance-info.c
index 61fbce1..c1cc960 100644
--- a/src/timer/instance-info.c
+++ b/src/timer/instance-info.c
@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
-#include "instance-info.h"
-
-#include <sound/asound.h>
+#include "privates.h"
 
 struct _ALSATimerInstanceInfoPrivate {
     struct snd_timer_info info;
@@ -95,3 +93,12 @@ static void alsatimer_instance_info_init(ALSATimerInstanceInfo *self)
 {
     return;
 }
+
+void timer_instance_info_refer_private(ALSATimerInstanceInfo *self,
+                                     struct snd_timer_info **info)
+{
+    ALSATimerInstanceInfoPrivate *priv =
+                            alsatimer_instance_info_get_instance_private(self);
+
+    *info = &priv->info;
+}
diff --git a/src/timer/privates.h b/src/timer/privates.h
index 5527914..e41770c 100644
--- a/src/timer/privates.h
+++ b/src/timer/privates.h
@@ -5,6 +5,7 @@
 #include "device-info.h"
 #include "device-status.h"
 #include "device-params.h"
+#include "instance-info.h"
 
 #include <sound/asound.h>
 
@@ -25,6 +26,9 @@ void timer_device_status_refer_private(ALSATimerDeviceStatus *self,
 void timer_device_params_refer_private(ALSATimerDeviceParams *self,
                                        struct snd_timer_gparams **params);
 
+void timer_instance_info_refer_private(ALSATimerInstanceInfo *self,
+                                       struct snd_timer_info **info);
+
 G_END_DECLS
 
 #endif
diff --git a/src/timer/user-instance.c b/src/timer/user-instance.c
index c5b8cbb..4f8d963 100644
--- a/src/timer/user-instance.c
+++ b/src/timer/user-instance.c
@@ -129,3 +129,30 @@ void alsatimer_user_instance_attach_as_slave(ALSATimerUserInstance *self,
     if (ioctl(priv->fd, SNDRV_TIMER_IOCTL_SELECT, &sel) < 0)
         generate_error(error, errno);
 }
+
+/**
+ * alsatimer_user_instance_get_info:
+ * @self: A #ALSATimerUserInstance.
+ * @instance_info: (out): A #ALSATimerInstanceInfo.
+ * @error: A #GError.
+ *
+ * Return the information of device if attached to the instance.
+ */
+void alsatimer_user_instance_get_info(ALSATimerUserInstance *self,
+                                      ALSATimerInstanceInfo **instance_info,
+                                      GError **error)
+{
+    ALSATimerUserInstancePrivate *priv;
+    struct snd_timer_info *info;
+
+    g_return_if_fail(ALSATIMER_IS_USER_INSTANCE(self));
+    priv = alsatimer_user_instance_get_instance_private(self);
+
+    *instance_info = g_object_new(ALSATIMER_TYPE_INSTANCE_INFO, NULL);
+    timer_instance_info_refer_private(*instance_info, &info);
+
+    if (ioctl(priv->fd, SNDRV_TIMER_IOCTL_INFO, info) < 0) {
+        generate_error(error, errno);
+        g_object_unref(*instance_info);
+    }
+}
diff --git a/src/timer/user-instance.h b/src/timer/user-instance.h
index 0b0fb8e..9ace150 100644
--- a/src/timer/user-instance.h
+++ b/src/timer/user-instance.h
@@ -6,6 +6,7 @@
 #include <glib-object.h>
 
 #include <timer/device-id.h>
+#include <timer/instance-info.h>
 
 G_BEGIN_DECLS
 
@@ -60,6 +61,10 @@ void alsatimer_user_instance_attach_as_slave(ALSATimerUserInstance *self,
                                         int slave_id,
                                         GError **error);
 
+void alsatimer_user_instance_get_info(ALSATimerUserInstance *self,
+                                      ALSATimerInstanceInfo **instance_info,
+                                      GError **error);
+
 G_END_DECLS
 
 #endif
diff --git a/tests/alsatimer-user-instance b/tests/alsatimer-user-instance
index 39a5656..a16e703 100644
--- a/tests/alsatimer-user-instance
+++ b/tests/alsatimer-user-instance
@@ -16,6 +16,7 @@ methods = (
     'open',
     'attach',
     'attach_as_slave',
+    'get_info',
 )
 signals = ()
 
-- 
2.47.3