From db158752e02c8872c9b97b9a147d4a08c2555d66 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: add global method to get status of timer device

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 src/timer/alsatimer.map   |  1 +
 src/timer/device-status.c | 13 ++++++++++---
 src/timer/privates.h      |  4 ++++
 src/timer/query.c         | 39 +++++++++++++++++++++++++++++++++++++++
 src/timer/query.h         |  6 ++++++
 5 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/src/timer/alsatimer.map b/src/timer/alsatimer.map
index ed05263..825418f 100644
--- a/src/timer/alsatimer.map
+++ b/src/timer/alsatimer.map
@@ -11,6 +11,7 @@ ALSA_GOBJECT_0_0_0 {
     "alsatimer_get_devnode";
     "alsatimer_get_device_id_list";
     "alsatimer_get_device_info";
+    "alsatimer_get_device_status";
 
     "alsatimer_device_id_get_type";
     "alsatimer_device_id_new";
diff --git a/src/timer/device-status.c b/src/timer/device-status.c
index c27866d..233f9d2 100644
--- a/src/timer/device-status.c
+++ b/src/timer/device-status.c
@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: LGPL-3.0-or-later
-#include "device-status.h"
-
-#include <sound/asound.h>
+#include "privates.h"
 
 struct _ALSATimerDeviceStatusPrivate {
     struct snd_timer_gstatus status;
@@ -76,3 +74,12 @@ static void alsatimer_device_status_init(ALSATimerDeviceStatus *self)
 {
     return;
 }
+
+void timer_device_status_refer_private(ALSATimerDeviceStatus *self,
+                                       struct snd_timer_gstatus **status)
+{
+    ALSATimerDeviceStatusPrivate *priv =
+                            alsatimer_device_status_get_instance_private(self);
+
+    *status = &priv->status;
+}
diff --git a/src/timer/privates.h b/src/timer/privates.h
index 5785d46..81cb6af 100644
--- a/src/timer/privates.h
+++ b/src/timer/privates.h
@@ -3,6 +3,7 @@
 #define __ALSA_GOBJECT_ALSATIMER_PRIVATES__H__
 
 #include "device-info.h"
+#include "device-status.h"
 
 #include <sound/asound.h>
 
@@ -17,6 +18,9 @@ GQuark alsatimer_error_quark(void);
 void timer_device_info_refer_private(ALSATimerDeviceInfo *self,
                                      struct snd_timer_ginfo **info);
 
+void timer_device_status_refer_private(ALSATimerDeviceStatus *self,
+                                       struct snd_timer_gstatus **status);
+
 G_END_DECLS
 
 #endif
diff --git a/src/timer/query.c b/src/timer/query.c
index c88a9e5..b65a5f3 100644
--- a/src/timer/query.c
+++ b/src/timer/query.c
@@ -193,3 +193,42 @@ void alsatimer_get_device_info(ALSATimerDeviceId *device_id,
 
     close(fd);
 }
+
+/**
+ * alsatimer_get_device_status:
+ * @device_id: A #ALSATimerDeviceId to identify the timer device.
+ * @device_status: (out): The status of timer device.
+ * @error: A #GError.
+ */
+void alsatimer_get_device_status(ALSATimerDeviceId *device_id,
+                                 ALSATimerDeviceStatus **device_status,
+                                 GError **error)
+{
+    char *devnode;
+    struct snd_timer_gstatus *status;
+    int fd;
+
+    g_return_if_fail(device_id != NULL);
+
+    alsatimer_get_devnode(&devnode, error);
+    if (*error != NULL)
+        return;
+
+    fd = open(devnode, O_RDONLY);
+    g_free(devnode);
+    if (fd < 0) {
+        generate_error(error, errno);
+        return;
+    }
+
+    *device_status = g_object_new(ALSATIMER_TYPE_DEVICE_STATUS, NULL);
+    timer_device_status_refer_private(*device_status, &status);
+
+    status->tid = *device_id;
+    if (ioctl(fd, SNDRV_TIMER_IOCTL_GSTATUS, status) < 0) {
+        generate_error(error, errno);
+        g_object_unref(*device_status);
+    }
+
+    close(fd);
+}
diff --git a/src/timer/query.h b/src/timer/query.h
index facf489..d3dc3a7 100644
--- a/src/timer/query.h
+++ b/src/timer/query.h
@@ -7,6 +7,7 @@
 
 #include <timer/device-id.h>
 #include <timer/device-info.h>
+#include <timer/device-status.h>
 
 #include <timer/alsatimer-enums.h>
 
@@ -21,6 +22,11 @@ void alsatimer_get_device_id_list(GList **entries, GError **error);
 void alsatimer_get_device_info(ALSATimerDeviceId *device_id,
                                ALSATimerDeviceInfo **device_info,
                                GError **error);
+
+void alsatimer_get_device_status(ALSATimerDeviceId *device_id,
+                                 ALSATimerDeviceStatus **device_status,
+                                 GError **error);
+
 G_END_DECLS
 
 #endif
-- 
2.47.3