Commit b622d21d authored by Sreerenj Balachandran's avatar Sreerenj Balachandran

msdk : Add RenderNode support

Use drm render node as the first choice of device node file.
Fall backs to use drm primary (/dev/dri/card[0-9])
if there is no render node available

Basic logic is inherited from gstreamer-vaapi, but using
gudev API rather than libudev directly.

Added gudev library as dependency for msdk.

https://bugzilla.gnome.org/show_bug.cgi?id=791599
parent 76a82fea
......@@ -49,7 +49,8 @@ libgstmsdk_la_CFLAGS = \
$(GST_PBUTILS_CFLAGS) \
$(GST_VIDEO_CFLAGS) \
$(MSDK_CFLAGS) \
$(LIBMFX_CFLAGS)
$(LIBMFX_CFLAGS)\
$(G_UDEV_CFLAGS)
libgstmsdk_la_LIBADD = \
$(GST_LIBS) \
......@@ -57,7 +58,8 @@ libgstmsdk_la_LIBADD = \
$(GST_PBUTILS_LIBS) \
$(GST_VIDEO_LIBS) \
$(MSDK_LIBS) \
$(LIBMFX_LIBS)
$(LIBMFX_LIBS) \
$(G_UDEV_LIBS)
if USE_MSDK_LIBVA
libgstmsdk_la_SOURCES += \
......
......@@ -35,6 +35,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <va/va_drm.h>
#include <gudev/gudev.h>
#endif
GST_DEBUG_CATEGORY_STATIC (gst_debug_msdkcontext);
......@@ -64,6 +65,65 @@ struct _GstMsdkContextPrivate
};
#ifndef _WIN32
static gint
get_device_id (void)
{
GUdevClient *client = NULL;
GUdevEnumerator *e = NULL;
GList *devices, *l;
GUdevDevice *dev, *parent;
const gchar *devnode_path;
const gchar *devnode_files[2] = { "renderD[0-9]*", "card[0-9]*" };
int fd = -1, i;
client = g_udev_client_new (NULL);
if (!client)
goto done;
e = g_udev_enumerator_new (client);
if (!e)
goto done;
g_udev_enumerator_add_match_subsystem (e, "drm");
for (i = 0; i < 2; i++) {
g_udev_enumerator_add_match_name (e, devnode_files[i]);
devices = g_udev_enumerator_execute (e);
for (l = devices; l != NULL; l = l->next) {
dev = (GUdevDevice *) l->data;
parent = g_udev_device_get_parent (dev);
if (strcmp (g_udev_device_get_subsystem (parent), "pci") != 0) {
g_object_unref (parent);
continue;
}
g_object_unref (parent);
devnode_path = g_udev_device_get_device_file (dev);
fd = open (devnode_path, O_RDWR | O_CLOEXEC);
if (fd < 0)
continue;
GST_DEBUG ("Opened the drm device node %s", devnode_path);
break;
}
g_list_foreach (devices, (GFunc) gst_object_unref, NULL);
g_list_free (devices);
if (fd >= 0)
goto done;
}
done:
if (e)
g_object_unref (e);
if (client)
g_object_unref (client);
return fd;
}
static gboolean
gst_msdk_context_use_vaapi (GstMsdkContext * context)
{
......@@ -74,12 +134,9 @@ gst_msdk_context_use_vaapi (GstMsdkContext * context)
mfxStatus status;
GstMsdkContextPrivate *priv = context->priv;
/* maybe /dev/dri/renderD128 */
static const gchar *dri_path = "/dev/dri/card0";
fd = open (dri_path, O_RDWR);
fd = get_device_id ();
if (fd < 0) {
GST_ERROR ("Couldn't open %s", dri_path);
GST_ERROR ("Couldn't find a drm device node to open");
return FALSE;
}
......
......@@ -40,8 +40,9 @@ if msdk_root != ''
else
libva_dep = dependency('libva-drm', required: false)
libdl_dep = cc.find_library('dl', required: false)
msdk_dep = declare_dependency(include_directories: msdk_incdir, dependencies: [msdk_lib, libva_dep, libdl_dep])
msdk_dep_found = msdk_lib.found() and libva_dep.found() and libdl_dep.found()
libgudev_dep = dependency('gudev-1.0', required : false)
msdk_dep = declare_dependency(include_directories: msdk_incdir, dependencies: [msdk_lib, libva_dep, libdl_dep, libgudev_dep])
msdk_dep_found = msdk_lib.found() and libva_dep.found() and libdl_dep.found() and libgudev_dep.found()
endif
if msdk_dep_found
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment