1 files changed, 69 insertions, 0 deletions
diff --git a/sys/wasapi/gstmmdeviceenumerator.h b/sys/wasapi/gstmmdeviceenumerator.h
new file mode 100644
index 000000000..d3f7b07a9
--- /dev/null
+++ b/sys/wasapi/gstmmdeviceenumerator.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_MM_DEVICE_ENUMERATOR_H__
+#define __GST_MM_DEVICE_ENUMERATOR_H__
+
+#include <gst/gst.h>
+#include <mmdeviceapi.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_MM_DEVICE_ENUMERATOR (gst_mm_device_enumerator_get_type ())
+G_DECLARE_FINAL_TYPE (GstMMDeviceEnumerator, gst_mm_device_enumerator,
+    GST, MM_DEVICE_ENUMERATOR, GstObject);
+
+typedef struct
+{
+  HRESULT (*device_state_changed)    (GstMMDeviceEnumerator * enumerator,
+                                      LPCWSTR device_id,
+                                      DWORD new_state,
+                                      gpointer user_data);
+
+  HRESULT (*device_added)            (GstMMDeviceEnumerator * enumerator,
+                                      LPCWSTR device_id,
+                                      gpointer user_data);
+
+  HRESULT (*device_removed)          (GstMMDeviceEnumerator * provider,
+                                      LPCWSTR device_id,
+                                      gpointer user_data);
+
+  HRESULT (*default_device_changed)  (GstMMDeviceEnumerator * provider,
+                                      EDataFlow flow,
+                                      ERole role,
+                                      LPCWSTR default_device_id,
+                                      gpointer user_data);
+
+  HRESULT (*property_value_changed)  (GstMMDeviceEnumerator * provider,
+                                      LPCWSTR device_id,
+                                      const PROPERTYKEY key,
+                                      gpointer user_data);
+} GstMMNotificationClientCallbacks;
+
+GstMMDeviceEnumerator * gst_mm_device_enumerator_new (void);
+
+IMMDeviceEnumerator * gst_mm_device_enumerator_get_handle (GstMMDeviceEnumerator * enumerator);
+
+gboolean gst_mm_device_enumerator_set_notification_callback (GstMMDeviceEnumerator * enumerator,
+                                                             GstMMNotificationClientCallbacks * callbacks,
+                                                             gpointer user_data);
+
+G_END_DECLS
+
+#endif /* __GST_MM_DEVICE_ENUMERATOR_H__ */