gstreamer/sys/v4l2codecs/gstv4l2codecdevice.h
Nicolas Dufresne 6d9c98ae5a v4l2codecs: Add device enumeration
This introduces a GstV4L2CodecDevice structure and helper to retrieve a
list of CODEC device drivers. In order to find the device driver we
enumerate all media devices with UDEV. We then get the media controller
topology and locate a entity with function encoder or decoder and make
sure it is linked to two V4L2 IO entity pointing to the same device
node.
2020-03-31 09:34:05 -04:00

43 lines
1.5 KiB
C

/* GStreamer
* Copyright (C) 2020 Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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_V4L2_CODEC_DEVICE_H_
#define _GST_V4L2_CODEC_DEVICE_H_
#include <gst/gst.h>
#define GST_TYPE_V4L2_CODEC_DEVICE (_gst_v4l2_codec_device_type)
#define GST_IS_V4L2_CODEC_DEVICE(obj) (GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_V4L2_CODEC_DEVICE))
#define GST_V4L2_CODEC_DEVICE(obj) ((GstV4l2CodecDevice *)(obj))
typedef struct {
GstMiniObject mini_object;
gchar *name;
guint32 function;
gchar *media_device_path;
gchar *video_device_path;
} GstV4l2CodecDevice;
GType gst_v4l2_codec_device_get_type (void);
GList *gst_v4l2_codec_find_devices (void);
void gst_v4l2_codec_device_list_free (GList *devices);
#endif /* _GST_V4L2_CODECS_DEVICE_H_ */