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08cb5b482d
Adding a helper library for various WinRT specific implementations. Currently this library supports only DeviceWatcher abstraction object which can be used for dynamic device add/remove detection. See also https://docs.microsoft.com/en-us/uwp/api/windows.devices.enumeration.devicewatcher?view=winrt-20348 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/947>
137 lines
5.2 KiB
C
137 lines
5.2 KiB
C
/* GStreamer
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* Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_WINRT_DEVICE_WATCHER_H__
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#define __GST_WINRT_DEVICE_WATCHER_H__
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#include <gst/gst.h>
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#include <gst/winrt/winrt-prelude.h>
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#include <windows.devices.enumeration.h>
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G_BEGIN_DECLS
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#define GST_TYPE_WINRT_DEVICE_WATCHER (gst_winrt_device_watcher_get_type())
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#define GST_WINRT_DEVICE_WATCHER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_WINRT_DEVICE_WATCHER, GstWinRTDeviceWatcher))
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#define GST_WINRT_DEVICE_WATCHER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_WINRT_DEVICE_WATCHER, GstWinRTDeviceWatcherClass))
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#define GST_IS_WINRT_DEVICE_WATCHER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_WINRT_DEVICE_WATCHER))
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#define GST_IS_WINRT_DEVICE_WATCHER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_WINRT_DEVICE_WATCHER))
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#define GST_WINRT_DEVICE_WATCHER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_WINRT_DEVICE_WATCHER, GstWinRTDeviceWatcherClass))
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#define GST_WINRT_DEVICE_WATCHER_CAST(obj) ((GstWinRTDeviceWatcher *)obj)
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typedef struct _GstWinRTDeviceWatcher GstWinRTDeviceWatcher;
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typedef struct _GstWinRTDeviceWatcherClass GstWinRTDeviceWatcherClass;
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typedef struct _GstWinRTDeviceWatcherPrivate GstWinRTDeviceWatcherPrivate;
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/* ABI::Windows::Devices::Enumeration::DeviceClass */
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#define GST_TYPE_WINRT_DEVICE_CLASS (gst_winrt_device_class_get_type ())
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typedef enum
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{
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GST_WINRT_DEVICE_CLASS_ALL = 0,
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GST_WINRT_DEVICE_CLASS_AUDIO_CAPTURE = 1,
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GST_WINRT_DEVICE_CLASS_AUDIO_RENDER = 2,
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GST_WINRT_DEVICE_CLASS_PORTABLE_STORAGE_DEVICE = 3,
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GST_WINRT_DEVICE_CLASS_VIDEO_CAPTURE = 4,
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} GstWinRTDeviceClass;
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typedef struct
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{
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/**
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* GstWinRTDeviceWatcherCallbacks::added:
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* @watcher: a #GstWinRTDeviceWatcher
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* @info: (transfer none): a IDeviceInformation interface handle
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* @user_data: a user_data
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*
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* Called when a device is added to the collection enumerated by the DeviceWatcher
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*/
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void (*added) (GstWinRTDeviceWatcher * watcher,
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__x_ABI_CWindows_CDevices_CEnumeration_CIDeviceInformation * info,
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gpointer user_data);
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/**
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* GstWinRTDeviceWatcherCallbacks::updated:
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* @watcher: a #GstWinRTDeviceWatcher
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* @info_update: (transfer none): a IDeviceInformationUpdate interface handle
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* @user_data: a user_data
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*
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* Called when a device is updated in the collection of enumerated devices
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*/
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void (*updated) (GstWinRTDeviceWatcher * watcher,
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__x_ABI_CWindows_CDevices_CEnumeration_CIDeviceInformationUpdate * info_update,
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gpointer user_data);
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/**
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* GstWinRTDeviceWatcherCallbacks::removed:
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* @watcher: a #GstWinRTDeviceWatcher
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* @info_update: (transfer none): a IDeviceInformationUpdate interface handle
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* @user_data: a user_data
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*
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* Called when a device is removed from the collection of enumerated devices
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*/
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void (*removed) (GstWinRTDeviceWatcher * watcher,
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__x_ABI_CWindows_CDevices_CEnumeration_CIDeviceInformationUpdate * info_update,
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gpointer user_data);
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/**
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* GstWinRTDeviceWatcherCallbacks::removed:
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* @watcher: a #GstWinRTDeviceWatcher
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* @user_data: a user_data
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*
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* Called when the enumeration of devices completes
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*/
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void (*enumeration_completed) (GstWinRTDeviceWatcher * watcher,
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gpointer user_data);
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} GstWinRTDeviceWatcherCallbacks;
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struct _GstWinRTDeviceWatcher
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{
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GstObject parent;
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GstWinRTDeviceWatcherPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstWinRTDeviceWatcherClass
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{
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GstObjectClass parent_class;
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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GST_WINRT_API
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GType gst_winrt_device_class_get_type (void);
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GST_WINRT_API
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GType gst_winrt_device_watcher_get_type (void);
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GST_WINRT_API
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GstWinRTDeviceWatcher * gst_winrt_device_watcher_new (GstWinRTDeviceClass device_class,
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const GstWinRTDeviceWatcherCallbacks * callbacks,
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gpointer user_data);
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GST_WINRT_API
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gboolean gst_winrt_device_watcher_start (GstWinRTDeviceWatcher * watcher);
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GST_WINRT_API
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void gst_winrt_device_watcher_stop (GstWinRTDeviceWatcher * watcher);
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G_END_DECLS
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#endif /* __GST_WINRT_DEVICE_WATCHER_H__ */
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