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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2e6cd5c2e4
libgudev is a problematic dependency, particularly in sandboxed environments, such as flatpak. This patch implements a way to get the available VA devices using brute-forced traverse of /dev/drm/renderD* directory. Thus usable in those sandboxed environments. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1027>
132 lines
3.5 KiB
C
132 lines
3.5 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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#if HAVE_GUDEV
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#include <gudev/gudev.h>
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#endif
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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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#if HAVE_GUDEV
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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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#else
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GList *
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gst_va_device_find_devices (void)
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{
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GstVaDisplay *dpy;
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GQueue devices = G_QUEUE_INIT;
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gchar path[64];
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guint i;
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for (i = 0; i < 8; i++) {
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g_snprintf (path, sizeof (path), "/dev/dri/renderD%d", 128 + i);
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if (!g_file_test (path, G_FILE_TEST_EXISTS))
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continue;
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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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return devices.head;
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}
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#endif
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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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