package/mpv: add optional support for DRM/EGL-based vaapi acceleration

https://github.com/mpv-player/mpv/blob/master/wscript#L647

Runtime-tested using mesa3d iris driver on a non-x11 system.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mpv/Config.in

@@ -1,3 +1,9 @@
+config BR2_PACKAGE_MPV_SUPPORTS_VAAPI
+	bool
+	default y if BR2_PACKAGE_LIBDRM && BR2_PACKAGE_MESA3D_OPENGL_EGL
+	default y if BR2_PACKAGE_WAYLAND
+	default y if BR2_PACKAGE_XORG7
+
 config BR2_PACKAGE_MPV
 	bool "mpv"
 	depends on BR2_INSTALL_LIBSTDCPP # libass

package/mpv/mpv.mk

@@ -178,17 +178,16 @@ MPV_CONF_OPTS += --disable-rpi
 endif
 
 # va-api support
-# This requires one or more of the egl-drm, wayland, x11 backends
-# For now we support wayland and x11
-ifeq ($(BR2_PACKAGE_LIBVA),y)
-ifneq ($(BR2_PACKAGE_WAYLAND)$(BR2_PACKAGE_XORG7),)
+ifeq ($(BR2_PACKAGE_LIBVA)$(BR2_PACKAGE_MPV_SUPPORTS_VAAPI),yy)
 MPV_CONF_OPTS += --enable-vaapi
 MPV_DEPENDENCIES += libva
+ifeq ($(BR2_PACKAGE_LIBDRM),y)
+MPV_CONF_OPTS += --enable-vaapi-drm
 else
-MPV_CONF_OPTS += --disable-vaapi
+MPV_CONF_OPTS += --disable-vaapi-drm
 endif
 else
-MPV_CONF_OPTS += --disable-vaapi
+MPV_CONF_OPTS += --disable-vaapi --disable-vaapi-drm
 endif
 
 # wayland support