From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Sun, 9 Feb 2020 03:20:53 +0000 (+0900)
Subject: timer: user_instance: add an API to open ALSA Timer character device
X-Git-Tag: v0.1.0~349
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=f329e6b395d856e22a640f6791739123dfcb200f;p=alsa-gobject.git

timer: user_instance: add an API to open ALSA Timer character device

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---

diff --git a/src/timer/alsatimer.map b/src/timer/alsatimer.map
index b3d6eae..63be1eb 100644
--- a/src/timer/alsatimer.map
+++ b/src/timer/alsatimer.map
@@ -29,6 +29,7 @@ ALSA_GOBJECT_0_0_0 {
 
     "alsatimer_user_instance_get_type";
     "alsatimer_user_instance_new";
+    "alsatimer_user_instance_open";
   local:
     *;
 };
diff --git a/src/timer/user-instance.c b/src/timer/user-instance.c
index d8e873d..f9e0835 100644
--- a/src/timer/user-instance.c
+++ b/src/timer/user-instance.c
@@ -1,16 +1,70 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
 #include "user-instance.h"
+#include "query.h"
+#include "privates.h"
 
-G_DEFINE_TYPE(ALSATimerUserInstance, alsatimer_user_instance, G_TYPE_OBJECT)
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+struct _ALSATimerUserInstancePrivate {
+    int fd;
+};
+G_DEFINE_TYPE_WITH_PRIVATE(ALSATimerUserInstance, alsatimer_user_instance, G_TYPE_OBJECT)
+
+static void timer_user_instance_finalize(GObject *obj)
+{
+    ALSATimerUserInstance *self = ALSATIMER_USER_INSTANCE(obj);
+    ALSATimerUserInstancePrivate *priv =
+                            alsatimer_user_instance_get_instance_private(self);
+
+    if (priv->fd >= 0)
+        close(priv->fd);
+
+    G_OBJECT_CLASS(alsatimer_user_instance_parent_class)->finalize(obj);
+}
 
 static void alsatimer_user_instance_class_init(ALSATimerUserInstanceClass *klass)
 {
-    return;
+    GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
+
+    gobject_class->finalize = timer_user_instance_finalize;
 }
 
 static void alsatimer_user_instance_init(ALSATimerUserInstance *self)
 {
-    return;
+    ALSATimerUserInstancePrivate *priv =
+                            alsatimer_user_instance_get_instance_private(self);
+
+    priv->fd = -1;
+}
+
+/**
+ * alsatimer_user_instance_open:
+ * @self: A #ALSATimerUserInstance.
+ * @error: A #GError.
+ *
+ * Open ALSA Timer character device to allocate queue.
+ */
+void alsatimer_user_instance_open(ALSATimerUserInstance *self, GError **error)
+{
+    ALSATimerUserInstancePrivate *priv;
+    char *devnode;
+
+    g_return_if_fail(ALSATIMER_IS_USER_INSTANCE(self));
+    priv = alsatimer_user_instance_get_instance_private(self);
+
+    alsatimer_get_devnode(&devnode, error);
+    if (*error != NULL)
+        return;
+
+    priv->fd = open(devnode, O_RDONLY);
+    g_free(devnode);
+    if (priv->fd < 0) {
+        generate_error(error, errno);
+    }
 }
 
 ALSATimerUserInstance *alsatimer_user_instance_new()
diff --git a/src/timer/user-instance.h b/src/timer/user-instance.h
index 141d798..768b8bf 100644
--- a/src/timer/user-instance.h
+++ b/src/timer/user-instance.h
@@ -31,9 +31,12 @@ G_BEGIN_DECLS
 
 typedef struct _ALSATimerUserInstance           ALSATimerUserInstance;
 typedef struct _ALSATimerUserInstanceClass      ALSATimerUserInstanceClass;
+typedef struct _ALSATimerUserInstancePrivate    ALSATimerUserInstancePrivate;
 
 struct _ALSATimerUserInstance {
     GObject parent_instance;
+
+    ALSATimerUserInstancePrivate *priv;
 };
 
 struct _ALSATimerUserInstanceClass {
@@ -44,6 +47,8 @@ GType alsatimer_user_instance_get_type() G_GNUC_CONST;
 
 ALSATimerUserInstance *alsatimer_user_instance_new();
 
+void alsatimer_user_instance_open(ALSATimerUserInstance *self, GError **error);
+
 G_END_DECLS
 
 #endif
diff --git a/tests/alsatimer-user-instance b/tests/alsatimer-user-instance
index 60cbcf0..33ad6b3 100644
--- a/tests/alsatimer-user-instance
+++ b/tests/alsatimer-user-instance
@@ -13,6 +13,7 @@ target = ALSATimer.UserInstance()
 props = ()
 methods = (
     'new',
+    'open',
 )
 signals = ()