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libs: display: drm: support gst.vaapi.app.Display context for drm backend

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Attributes for drm backend:
- va-display : ponter of VADisplay
- drm-device-fd : the DRM device file descriptor

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/-/merge_requests/409>
This commit is contained in:
Haihao Xiang 2021-01-27 12:05:44 +08:00 committed by GStreamer Merge Bot
parent 85284f4aac
commit 4ff4bcd725
3 changed files with 49 additions and 0 deletions
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34
gst-libs/gst/vaapi/gstvaapidisplay_drm.c
View file

@ -396,6 +396,40 @@ gst_vaapi_display_drm_new_with_device (gint device)
GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, GINT_TO_POINTER (device));
}
/**
* gst_vaapi_display_drm_new_with_va_display:
* @va_display: a VADisplay #va_display
* @fd: an open DRM device (file descriptor) #fd
*
* Creates a #GstVaapiDisplay based on the VADisplay @va_display and
* the open DRM device @fd.
* The caller still owns the device file descriptor and must call close()
* when all #GstVaapiDisplay references are released.
*
* Return value: a newly allocated #GstVaapiDisplay object
*/
GstVaapiDisplay *
gst_vaapi_display_drm_new_with_va_display (VADisplay va_display, gint fd)
{
GstVaapiDisplay *display;
GstVaapiDisplayInfo info = {
.va_display = va_display,
.native_display = GINT_TO_POINTER (fd),
};
g_return_val_if_fail (fd >= 0, NULL);
display = g_object_new (GST_TYPE_VAAPI_DISPLAY_DRM, NULL);
if (!gst_vaapi_display_config (display,
GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info)) {
gst_object_unref (display);
return NULL;
}
return display;
}
/**
* gst_vaapi_display_drm_get_device:
* @display: a #GstVaapiDisplayDRM

3
gst-libs/gst/vaapi/gstvaapidisplay_drm.h
View file

@ -39,6 +39,9 @@ gst_vaapi_display_drm_new (const gchar * device_path);
GstVaapiDisplay *
gst_vaapi_display_drm_new_with_device (gint device);
GstVaapiDisplay *
gst_vaapi_display_drm_new_with_va_display (VADisplay va_display, gint fd);
gint
gst_vaapi_display_drm_get_device (GstVaapiDisplayDRM * display);

12
gst/vaapi/gstvaapivideocontext.c
View file

@ -34,6 +34,9 @@
#if USE_WAYLAND
#include <gst/vaapi/gstvaapidisplay_wayland.h>
#endif
#if USE_DRM
#include <gst/vaapi/gstvaapidisplay_drm.h>
#endif
GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
@ -117,6 +120,15 @@ gst_vaapi_video_context_get_display (GstContext * context, gboolean app_context,
}
}
#endif
#if USE_DRM
if (!display) {
gint fd = -1;
if (gst_structure_get (structure, "drm-device-fd", G_TYPE_INT, &fd,
NULL)) {
display = gst_vaapi_display_drm_new_with_va_display (va_display, fd);
}
}
#endif
_init_context_debug ();