From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: Sun, 9 Feb 2020 03:20:53 +0000 (+0900)
Subject: timer: add global method to get list of available timers
X-Git-Tag: v0.1.0~360
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=9e262d6adfdac3648ee941b4b61d89e6ee93c6cd;p=alsa-gobject.git

timer: add global method to get list of available timers

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

diff --git a/src/timer/alsatimer.map b/src/timer/alsatimer.map
index 6d9dcb2..9ae39db 100644
--- a/src/timer/alsatimer.map
+++ b/src/timer/alsatimer.map
@@ -9,6 +9,7 @@ ALSA_GOBJECT_0_0_0 {
 
     "alsatimer_get_sysname";
     "alsatimer_get_devnode";
+    "alsatimer_get_device_id_list";
 
     "alsatimer_device_id_get_type";
     "alsatimer_device_id_new";
diff --git a/src/timer/privates.h b/src/timer/privates.h
index 9f5666f..4efb5fb 100644
--- a/src/timer/privates.h
+++ b/src/timer/privates.h
@@ -2,6 +2,8 @@
 #ifndef __ALSA_GOBJECT_ALSATIMER_PRIVATES__H__
 #define __ALSA_GOBJECT_ALSATIMER_PRIVATES__H__
 
+#include <sound/asound.h>
+
 G_BEGIN_DECLS
 
 GQuark alsatimer_error_quark(void);
diff --git a/src/timer/query.c b/src/timer/query.c
index 2a8f58a..6194994 100644
--- a/src/timer/query.c
+++ b/src/timer/query.c
@@ -4,6 +4,14 @@
 
 #include <stdbool.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <stdbool.h>
+
+#include <sound/asound.h>
 
 #include <libudev.h>
 
@@ -103,3 +111,46 @@ void alsatimer_get_devnode(char **devnode, GError **error)
     udev_device_unref(dev);
     udev_unref(ctx);
 }
+
+/**
+ * alsatimer_get_device_id_list:
+ * @entries: (element-type ALSATimer.DeviceId)(out): The array with
+ *           entries of ALSATimerId.
+ * @error: A #GError.
+ *
+ */
+void alsatimer_get_device_id_list(GList **entries, GError **error)
+{
+    struct snd_timer_id id = {
+        .dev_class = -1,
+    };
+    char *devnode;
+    int fd;
+
+    g_return_if_fail(entries != 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;
+    }
+
+    while (true) {
+        ALSATimerDeviceId *entry;
+
+        if (ioctl(fd, SNDRV_TIMER_IOCTL_NEXT_DEVICE, &id) < 0)
+            break;
+        if (id.dev_class == SNDRV_TIMER_CLASS_NONE)
+            break;
+
+        entry = g_boxed_copy(ALSATIMER_TYPE_DEVICE_ID, &id);
+        *entries = g_list_append(*entries, entry);
+    }
+
+    close(fd);
+}
diff --git a/src/timer/query.h b/src/timer/query.h
index a8ec3a7..b8fbc68 100644
--- a/src/timer/query.h
+++ b/src/timer/query.h
@@ -5,12 +5,18 @@
 #include <glib.h>
 #include <glib-object.h>
 
+#include <timer/device-id.h>
+
+#include <timer/alsatimer-enums.h>
+
 G_BEGIN_DECLS
 
 void alsatimer_get_sysname(char **sysname, GError **error);
 
 void alsatimer_get_devnode(char **devnode, GError **error);
 
+void alsatimer_get_device_id_list(GList **entries, GError **error);
+
 G_END_DECLS
 
 #endif