mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 13:48:55 +00:00
Since the commit c29c71ae9d
,
device activation method will be called from an internal thread.
A problem is that, CoreApplication::GetCurrentView()
method will return nullptr if it was called from non-UI thread,
and as a result, currently implemented method for accessing ICoreDispatcher
will not work in any case. There seems to be no robust way for
accessing ICoreDispatcher other then setting it by user.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1466>
225 lines
5.9 KiB
C
225 lines
5.9 KiB
C
/* GStreamer
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* Copyright (C) 2020 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstmfconfig.h"
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#include "gstmfvideosrc.h"
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#include "gstmfutils.h"
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#include "gstmfsourceobject.h"
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#include "gstmfdevice.h"
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GST_DEBUG_CATEGORY_EXTERN (gst_mf_debug);
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#define GST_CAT_DEFAULT gst_mf_debug
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enum
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{
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PROP_0,
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PROP_DEVICE_PATH,
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};
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struct _GstMFDevice
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{
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GstDevice parent;
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gchar *device_path;
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};
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G_DEFINE_TYPE (GstMFDevice, gst_mf_device, GST_TYPE_DEVICE);
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static void gst_mf_device_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static void gst_mf_device_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_mf_device_finalize (GObject * object);
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static GstElement *gst_mf_device_create_element (GstDevice * device,
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const gchar * name);
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static void
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gst_mf_device_class_init (GstMFDeviceClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstDeviceClass *dev_class = GST_DEVICE_CLASS (klass);
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dev_class->create_element = gst_mf_device_create_element;
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gobject_class->get_property = gst_mf_device_get_property;
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gobject_class->set_property = gst_mf_device_set_property;
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gobject_class->finalize = gst_mf_device_finalize;
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g_object_class_install_property (gobject_class, PROP_DEVICE_PATH,
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g_param_spec_string ("device-path", "Device Path",
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"The device path", NULL,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_mf_device_init (GstMFDevice * self)
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{
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}
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static void
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gst_mf_device_finalize (GObject * object)
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{
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GstMFDevice *self = GST_MF_DEVICE (object);
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g_free (self->device_path);
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G_OBJECT_CLASS (gst_mf_device_parent_class)->finalize (object);
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}
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static GstElement *
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gst_mf_device_create_element (GstDevice * device, const gchar * name)
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{
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GstMFDevice *self = GST_MF_DEVICE (device);
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GstElement *elem;
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elem = gst_element_factory_make ("mfvideosrc", name);
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g_object_set (elem, "device-path", self->device_path, NULL);
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return elem;
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}
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static void
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gst_mf_device_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstMFDevice *self = GST_MF_DEVICE (object);
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switch (prop_id) {
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case PROP_DEVICE_PATH:
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g_value_set_string (value, self->device_path);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_mf_device_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstMFDevice *self = GST_MF_DEVICE (object);
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switch (prop_id) {
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case PROP_DEVICE_PATH:
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self->device_path = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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struct _GstMFDeviceProvider
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{
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GstDeviceProvider parent;
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};
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G_DEFINE_TYPE (GstMFDeviceProvider, gst_mf_device_provider,
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GST_TYPE_DEVICE_PROVIDER);
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static GList *gst_mf_device_provider_probe (GstDeviceProvider * provider);
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static void
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gst_mf_device_provider_class_init (GstMFDeviceProviderClass * klass)
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{
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GstDeviceProviderClass *provider_class = GST_DEVICE_PROVIDER_CLASS (klass);
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provider_class->probe = GST_DEBUG_FUNCPTR (gst_mf_device_provider_probe);
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gst_device_provider_class_set_static_metadata (provider_class,
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"Media Foundation Device Provider",
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"Source/Video", "List Media Foundation source devices",
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"Seungha Yang <seungha@centricular.com>");
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}
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static void
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gst_mf_device_provider_init (GstMFDeviceProvider * provider)
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{
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}
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static GList *
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gst_mf_device_provider_probe (GstDeviceProvider * provider)
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{
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GstMFDeviceProvider *self = GST_MF_DEVICE_PROVIDER (provider);
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GList *list = NULL;
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gint i;
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for (i = 0;; i++) {
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GstMFSourceObject *obj = NULL;
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GstDevice *device;
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GstStructure *props = NULL;
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GstCaps *caps = NULL;
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gchar *device_name = NULL;
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gchar *device_path = NULL;
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obj = gst_mf_source_object_new (GST_MF_SOURCE_TYPE_VIDEO,
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i, NULL, NULL, NULL);
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if (!obj)
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break;
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caps = gst_mf_source_object_get_caps (obj);
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if (!caps) {
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GST_WARNING_OBJECT (self, "Empty caps for device index %d", i);
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goto next;
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}
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g_object_get (obj,
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"device-path", &device_path, "device-name", &device_name, NULL);
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if (!device_path) {
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GST_WARNING_OBJECT (self, "Device path is unavailable");
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goto next;
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}
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if (!device_name) {
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GST_WARNING_OBJECT (self, "Device name is unavailable");
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goto next;
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}
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props = gst_structure_new ("mf-proplist",
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"device.api", G_TYPE_STRING, "mediafoundation",
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"device.path", G_TYPE_STRING, device_path,
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"device.name", G_TYPE_STRING, device_name, NULL);
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device = g_object_new (GST_TYPE_MF_DEVICE, "device-path", device_path,
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"display-name", device_name, "caps", caps,
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"device-class", "Source/Video", "properties", props, NULL);
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list = g_list_append (list, device);
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next:
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if (caps)
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gst_caps_unref (caps);
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if (props)
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gst_structure_free (props);
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g_free (device_path);
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g_free (device_name);
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gst_object_unref (obj);
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}
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return list;
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}
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