lavfi/idet: switch to an AVOptions-based system.

doc/filters.texi

@@ -3730,6 +3730,15 @@ Detect video interlacing type.
 This filter tries to detect if the input is interlaced or progressive,
 top or bottom field first.
 
+The filter accepts the following options:
+
+@table @option
+@item intl_thres
+Set interlacing threshold.
+@item prog_thres
+Set progressive threshold.
+@end table
+
 @section il
 
 Deinterleave or interleave fields.

libavfilter/avfilter.c

@@ -682,6 +682,7 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
         !strcmp(filter->filter->name, "histeq"     ) ||
         !strcmp(filter->filter->name, "histogram"  ) ||
         !strcmp(filter->filter->name, "hqdn3d"     ) ||
+        !strcmp(filter->filter->name, "idet"       ) ||
         !strcmp(filter->filter->name, "ocv"        ) ||
         !strcmp(filter->filter->name, "life"       ) ||
         !strcmp(filter->filter->name, "lut"        ) ||

libavfilter/vf_idet.c

@@ -304,8 +304,6 @@ static const AVFilterPad idet_outputs[] = {
     { NULL }
 };
 
-static const char *const shorthand[] = { "intl_thres", "prog_thres", NULL };
-
 AVFilter avfilter_vf_idet = {
     .name          = "idet",
     .description   = NULL_IF_CONFIG_SMALL("Interlace detect Filter."),
@@ -317,5 +315,4 @@ AVFilter avfilter_vf_idet = {
     .inputs        = idet_inputs,
     .outputs       = idet_outputs,
     .priv_class    = &idet_class,
-    .shorthand     = shorthand,
 };