1 /* GStreamer
2 * Copyright (C) 2018 Nirbheek Chauhan <nirbheek@centricular.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "gstwasapidevice.h"
25
26 G_DEFINE_TYPE (GstWasapiDeviceProvider, gst_wasapi_device_provider,
27 GST_TYPE_DEVICE_PROVIDER);
28
29 static void gst_wasapi_device_provider_finalize (GObject * object);
30 static GList *gst_wasapi_device_provider_probe (GstDeviceProvider * provider);
31
32 static void
gst_wasapi_device_provider_class_init(GstWasapiDeviceProviderClass * klass)33 gst_wasapi_device_provider_class_init (GstWasapiDeviceProviderClass * klass)
34 {
35 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
36 GstDeviceProviderClass *dm_class = GST_DEVICE_PROVIDER_CLASS (klass);
37
38 gobject_class->finalize = gst_wasapi_device_provider_finalize;
39
40 dm_class->probe = gst_wasapi_device_provider_probe;
41
42 gst_device_provider_class_set_static_metadata (dm_class,
43 "WASAPI (Windows Audio Session API) Device Provider",
44 "Source/Sink/Audio", "List WASAPI source and sink devices",
45 "Nirbheek Chauhan <nirbheek@centricular.com>");
46 }
47
48 static void
gst_wasapi_device_provider_init(GstWasapiDeviceProvider * provider)49 gst_wasapi_device_provider_init (GstWasapiDeviceProvider * provider)
50 {
51 CoInitializeEx (NULL, COINIT_MULTITHREADED);
52 }
53
54 static void
gst_wasapi_device_provider_finalize(GObject * object)55 gst_wasapi_device_provider_finalize (GObject * object)
56 {
57 CoUninitialize ();
58 }
59
60 static GList *
gst_wasapi_device_provider_probe(GstDeviceProvider * provider)61 gst_wasapi_device_provider_probe (GstDeviceProvider * provider)
62 {
63 GstWasapiDeviceProvider *self = GST_WASAPI_DEVICE_PROVIDER (provider);
64 GList *devices = NULL;
65
66 if (!gst_wasapi_util_get_devices (GST_OBJECT (self), TRUE, &devices))
67 GST_ERROR_OBJECT (self, "Failed to enumerate devices");
68
69 return devices;
70 }
71
72 /* GstWasapiDevice begins */
73
74 enum
75 {
76 PROP_DEVICE_STRID = 1,
77 };
78
79 G_DEFINE_TYPE (GstWasapiDevice, gst_wasapi_device, GST_TYPE_DEVICE);
80
81 static void gst_wasapi_device_get_property (GObject * object,
82 guint prop_id, GValue * value, GParamSpec * pspec);
83 static void gst_wasapi_device_set_property (GObject * object,
84 guint prop_id, const GValue * value, GParamSpec * pspec);
85 static void gst_wasapi_device_finalize (GObject * object);
86 static GstElement *gst_wasapi_device_create_element (GstDevice * device,
87 const gchar * name);
88
89 static void
gst_wasapi_device_class_init(GstWasapiDeviceClass * klass)90 gst_wasapi_device_class_init (GstWasapiDeviceClass * klass)
91 {
92 GstDeviceClass *dev_class = GST_DEVICE_CLASS (klass);
93 GObjectClass *object_class = G_OBJECT_CLASS (klass);
94
95 dev_class->create_element = gst_wasapi_device_create_element;
96
97 object_class->get_property = gst_wasapi_device_get_property;
98 object_class->set_property = gst_wasapi_device_set_property;
99 object_class->finalize = gst_wasapi_device_finalize;
100
101 g_object_class_install_property (object_class, PROP_DEVICE_STRID,
102 g_param_spec_string ("device", "Device string ID",
103 "Device strId", NULL,
104 G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
105 }
106
107 static void
gst_wasapi_device_init(GstWasapiDevice * device)108 gst_wasapi_device_init (GstWasapiDevice * device)
109 {
110 }
111
112 static void
gst_wasapi_device_finalize(GObject * object)113 gst_wasapi_device_finalize (GObject * object)
114 {
115 GstWasapiDevice *device = GST_WASAPI_DEVICE (object);
116
117 g_free (device->strid);
118
119 G_OBJECT_CLASS (gst_wasapi_device_parent_class)->finalize (object);
120 }
121
122 static GstElement *
gst_wasapi_device_create_element(GstDevice * device,const gchar * name)123 gst_wasapi_device_create_element (GstDevice * device, const gchar * name)
124 {
125 GstWasapiDevice *wasapi_dev = GST_WASAPI_DEVICE (device);
126 GstElement *elem;
127
128 elem = gst_element_factory_make (wasapi_dev->element, name);
129
130 g_object_set (elem, "device", wasapi_dev->strid, NULL);
131
132 return elem;
133 }
134
135 static void
gst_wasapi_device_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)136 gst_wasapi_device_get_property (GObject * object, guint prop_id,
137 GValue * value, GParamSpec * pspec)
138 {
139 GstWasapiDevice *device = GST_WASAPI_DEVICE_CAST (object);
140
141 switch (prop_id) {
142 case PROP_DEVICE_STRID:
143 g_value_set_string (value, device->strid);
144 break;
145 default:
146 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
147 break;
148 }
149 }
150
151 static void
gst_wasapi_device_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)152 gst_wasapi_device_set_property (GObject * object, guint prop_id,
153 const GValue * value, GParamSpec * pspec)
154 {
155 GstWasapiDevice *device = GST_WASAPI_DEVICE_CAST (object);
156
157 switch (prop_id) {
158 case PROP_DEVICE_STRID:
159 device->strid = g_value_dup_string (value);
160 break;
161 default:
162 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
163 break;
164 }
165 }
166