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e0915ce982
The VA acceleration now has more usages in linux-like platforms, such as the MSDK. The different plugins based on the VA acceleration need to share some common logic and types. We now move the display related functions and types into a common va lib. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2196>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/* GStreamer
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* Copyright (C) 2020 Igalia, S.L.
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* Author: Víctor Jáquez <vjaquez@igalia.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 "gstvadevice.h"
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#include <gudev/gudev.h>
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#define GST_CAT_DEFAULT gstva_debug
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GST_DEBUG_CATEGORY_EXTERN (gstva_debug);
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GST_DEFINE_MINI_OBJECT_TYPE (GstVaDevice, gst_va_device);
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static void
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gst_va_device_free (GstVaDevice * device)
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{
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gst_clear_object (&device->display);
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g_free (device->render_device_path);
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g_free (device);
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}
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static GstVaDevice *
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gst_va_device_new (GstVaDisplay * display, const gchar * render_device_path)
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{
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GstVaDevice *device = g_new0 (GstVaDevice, 1);
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gst_mini_object_init (GST_MINI_OBJECT_CAST (device), 0, GST_TYPE_VA_DEVICE,
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NULL, NULL, (GstMiniObjectFreeFunction) gst_va_device_free);
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/* take ownership */
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device->display = display;
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device->render_device_path = g_strdup (render_device_path);
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return device;
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}
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static gint
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compare_device_path (gconstpointer a, gconstpointer b, gpointer user_data)
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{
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const GstVaDevice *pa = a, *pb = b;
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return strcmp (pa->render_device_path, pb->render_device_path);
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}
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GList *
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gst_va_device_find_devices (void)
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{
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GUdevClient *client;
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GList *udev_devices, *dev;
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GQueue devices = G_QUEUE_INIT;
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client = g_udev_client_new (NULL);
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udev_devices = g_udev_client_query_by_subsystem (client, "drm");
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for (dev = udev_devices; dev; dev = g_list_next (dev)) {
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GstVaDisplay *dpy;
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GUdevDevice *udev = (GUdevDevice *) dev->data;
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const gchar *path = g_udev_device_get_device_file (udev);
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const gchar *name = g_udev_device_get_name (udev);
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if (!path || !g_str_has_prefix (name, "renderD")) {
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GST_LOG ("Ignoring %s in %s", name, path);
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continue;
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}
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if (!(dpy = gst_va_display_drm_new_from_path (path)))
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continue;
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GST_INFO ("Found VA-API device: %s", path);
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g_queue_push_head (&devices, gst_va_device_new (dpy, path));
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}
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g_queue_sort (&devices, compare_device_path, NULL);
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g_list_free_full (udev_devices, g_object_unref);
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g_object_unref (client);
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return devices.head;
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}
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void
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gst_va_device_list_free (GList * devices)
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{
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g_list_free_full (devices, (GDestroyNotify) gst_mini_object_unref);
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}
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