gstreamer/subprojects/gst-plugins-bad/sys/decklink/gstdecklinkdeviceprovider.cpp
Wojciech Kapsa 505f48f237 decklink: Add new persistent-id property and sort devices by persistent ID
The order of the devices iterator from the SDK is undefined and can
randomly change.

Keep the device-number property for backwards compatibility and
simplicity but prefer the persistent-id property and also use it for the
device provider implementation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3078>
2022-10-06 15:50:11 +00:00

95 lines
3 KiB
C++

/*
* Copyright (C) 2019 Mathieu Duponchelle <mathieu@centricular.com>
* Copyright (C) 2019 Sebastian Dröge <sebastian@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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdecklinkdeviceprovider.h"
#include "gstdecklink.h"
#define DEFAULT_PERSISTENT_ID (-1)
G_DEFINE_TYPE (GstDecklinkDeviceProvider, gst_decklink_device_provider,
GST_TYPE_DEVICE_PROVIDER);
GST_DEVICE_PROVIDER_REGISTER_DEFINE (decklinkdeviceprovider, "decklinkdeviceprovider",
GST_RANK_PRIMARY, GST_TYPE_DECKLINK_DEVICE_PROVIDER);
static void
gst_decklink_device_provider_init (GstDecklinkDeviceProvider * self)
{
}
static GList *
gst_decklink_device_provider_probe (GstDeviceProvider * provider)
{
return gst_decklink_get_devices ();
}
static void
gst_decklink_device_provider_class_init (GstDecklinkDeviceProviderClass * klass)
{
GstDeviceProviderClass *dm_class = GST_DEVICE_PROVIDER_CLASS (klass);
dm_class->probe = GST_DEBUG_FUNCPTR (gst_decklink_device_provider_probe);
gst_device_provider_class_set_static_metadata (dm_class,
"Decklink Device Provider", "Hardware/Source/Sink/Audio/Video",
"Lists and provides Decklink devices",
"Sebastian Dröge <sebastian@centricular.com>");
}
G_DEFINE_TYPE (GstDecklinkDevice, gst_decklink_device, GST_TYPE_DEVICE);
static void
gst_decklink_device_init (GstDecklinkDevice * self)
{
}
static GstElement *
gst_decklink_device_create_element (GstDevice * device, const gchar * name)
{
GstDecklinkDevice *self = GST_DECKLINK_DEVICE (device);
GstElement *ret = NULL;
if (self->video && self->capture) {
ret = gst_element_factory_make ("decklinkvideosrc", name);
} else if (!self->video && self->capture) {
ret = gst_element_factory_make ("decklinkaudiosrc", name);
} else if (self->video && !self->capture) {
ret = gst_element_factory_make ("decklinkvideosink", name);
} else {
ret = gst_element_factory_make ("decklinkaudiosink", name);
}
if (ret) {
g_object_set (ret, "persistent-id", self->persistent_id, NULL);
}
return ret;
}
static void
gst_decklink_device_class_init (GstDecklinkDeviceClass * klass)
{
GstDeviceClass *gst_device_class = GST_DEVICE_CLASS (klass);
gst_device_class->create_element =
GST_DEBUG_FUNCPTR (gst_decklink_device_create_element);
}