#if CONFIG_CONVOLUTION_FILTER
-AVFilter ff_vf_convolution = {
+const AVFilter ff_vf_convolution = {
.name = "convolution",
.description = NULL_IF_CONFIG_SMALL("Apply convolution filter."),
.priv_size = sizeof(ConvolutionContext),
#define prewitt_options prewitt_roberts_sobel_options
AVFILTER_DEFINE_CLASS(prewitt);
-AVFilter ff_vf_prewitt = {
+const AVFilter ff_vf_prewitt = {
.name = "prewitt",
.description = NULL_IF_CONFIG_SMALL("Apply prewitt operator."),
.priv_size = sizeof(ConvolutionContext),
#define sobel_options prewitt_roberts_sobel_options
AVFILTER_DEFINE_CLASS(sobel);
-AVFilter ff_vf_sobel = {
+const AVFilter ff_vf_sobel = {
.name = "sobel",
.description = NULL_IF_CONFIG_SMALL("Apply sobel operator."),
.priv_size = sizeof(ConvolutionContext),
#define roberts_options prewitt_roberts_sobel_options
AVFILTER_DEFINE_CLASS(roberts);
-AVFilter ff_vf_roberts = {
+const AVFilter ff_vf_roberts = {
.name = "roberts",
.description = NULL_IF_CONFIG_SMALL("Apply roberts cross operator."),
.priv_size = sizeof(ConvolutionContext),
#define kirsch_options prewitt_roberts_sobel_options
AVFILTER_DEFINE_CLASS(kirsch);
-AVFilter ff_vf_kirsch = {
+const AVFilter ff_vf_kirsch = {
.name = "kirsch",
.description = NULL_IF_CONFIG_SMALL("Apply kirsch operator."),
.priv_size = sizeof(ConvolutionContext),