From ebc918809d706b5f5d90e6cd994dd160643e8203 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 configure instance

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 src/timer/alsatimer.map       |  1 +
 src/timer/instance-params.c   |  9 +++++++++
 src/timer/privates.h          |  4 ++++
 src/timer/user-instance.c     | 24 ++++++++++++++++++++++++
 src/timer/user-instance.h     |  5 +++++
 tests/alsatimer-user-instance |  1 +
 6 files changed, 44 insertions(+)

diff --git a/src/timer/alsatimer.map b/src/timer/alsatimer.map
index ea0dab5..f99a2bc 100644
--- a/src/timer/alsatimer.map
+++ b/src/timer/alsatimer.map
@@ -33,6 +33,7 @@ ALSA_GOBJECT_0_0_0 {
     "alsatimer_user_instance_attach";
     "alsatimer_user_instance_attach_as_slave";
     "alsatimer_user_instance_get_info";
+    "alsatimer_user_instance_set_params";
 
     "alsatimer_instance_info_get_type";
 
diff --git a/src/timer/instance-params.c b/src/timer/instance-params.c
index cf728c0..8e31491 100644
--- a/src/timer/instance-params.c
+++ b/src/timer/instance-params.c
@@ -218,3 +218,12 @@ void alsatimer_instance_params_get_event_filter(ALSATimerInstanceParams *self,
     *entries = list;
     *entry_count = count;
 }
+
+void timer_instance_params_refer_private(ALSATimerInstanceParams *self,
+                                         struct snd_timer_params **params)
+{
+    ALSATimerInstanceParamsPrivate *priv =
+                        alsatimer_instance_params_get_instance_private(self);
+
+    *params = &priv->params;
+}
diff --git a/src/timer/privates.h b/src/timer/privates.h
index e41770c..d76ca51 100644
--- a/src/timer/privates.h
+++ b/src/timer/privates.h
@@ -6,6 +6,7 @@
 #include "device-status.h"
 #include "device-params.h"
 #include "instance-info.h"
+#include "instance-params.h"
 
 #include <sound/asound.h>
 
@@ -29,6 +30,9 @@ void timer_device_params_refer_private(ALSATimerDeviceParams *self,
 void timer_instance_info_refer_private(ALSATimerInstanceInfo *self,
                                        struct snd_timer_info **info);
 
+void timer_instance_params_refer_private(ALSATimerInstanceParams *self,
+                                         struct snd_timer_params **params);
+
 G_END_DECLS
 
 #endif
diff --git a/src/timer/user-instance.c b/src/timer/user-instance.c
index 4f8d963..231bd72 100644
--- a/src/timer/user-instance.c
+++ b/src/timer/user-instance.c
@@ -156,3 +156,27 @@ void alsatimer_user_instance_get_info(ALSATimerUserInstance *self,
         g_object_unref(*instance_info);
     }
 }
+
+/**
+ * alsatimer_user_instance_set_params:
+ * @self: A #ALSATimerUserInstance.
+ * @instance_params: (inout): A #ALSATimerInstanceParams.
+ * @error: A #GError.
+ *
+ * Configure the instance with the parameters and return the latest parameters.
+ */
+void alsatimer_user_instance_set_params(ALSATimerUserInstance *self,
+                                ALSATimerInstanceParams *const *instance_params,
+                                GError **error)
+{
+    ALSATimerUserInstancePrivate *priv;
+    struct snd_timer_params *params;
+
+    g_return_if_fail(ALSATIMER_IS_USER_INSTANCE(self));
+    priv = alsatimer_user_instance_get_instance_private(self);
+
+    timer_instance_params_refer_private(*instance_params, &params);
+
+    if (ioctl(priv->fd, SNDRV_TIMER_IOCTL_PARAMS, params) < 0)
+        generate_error(error, errno);
+}
diff --git a/src/timer/user-instance.h b/src/timer/user-instance.h
index 9ace150..6638335 100644
--- a/src/timer/user-instance.h
+++ b/src/timer/user-instance.h
@@ -7,6 +7,7 @@
 
 #include <timer/device-id.h>
 #include <timer/instance-info.h>
+#include <timer/instance-params.h>
 
 G_BEGIN_DECLS
 
@@ -65,6 +66,10 @@ void alsatimer_user_instance_get_info(ALSATimerUserInstance *self,
                                       ALSATimerInstanceInfo **instance_info,
                                       GError **error);
 
+void alsatimer_user_instance_set_params(ALSATimerUserInstance *self,
+                                ALSATimerInstanceParams *const *instance_params,
+                                GError **error);
+
 G_END_DECLS
 
 #endif
diff --git a/tests/alsatimer-user-instance b/tests/alsatimer-user-instance
index a16e703..29e9aa4 100644
--- a/tests/alsatimer-user-instance
+++ b/tests/alsatimer-user-instance
@@ -17,6 +17,7 @@ methods = (
     'attach',
     'attach_as_slave',
     'get_info',
+    'set_params',
 )
 signals = ()
 
-- 
2.47.3