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

doc/filters.texi

@@ -6873,7 +6873,7 @@ This filter accepts the following options:
 
 @table @option
 
-@item expr
+@item expr, tb
 The expression which is evaluated into the output timebase.
 
 @end table

libavfilter/avfilter.c

@@ -750,6 +750,7 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
         !strcmp(filter->filter->name, "rgbtestsrc") ||
         !strcmp(filter->filter->name, "setpts"       ) ||
         !strcmp(filter->filter->name, "settb"        ) ||
+        !strcmp(filter->filter->name, "asettb"       ) ||
         !strcmp(filter->filter->name, "showspectrum") ||
         !strcmp(filter->filter->name, "silencedetect") ||
         !strcmp(filter->filter->name, "sine"     ) ||

libavfilter/f_settb.c

@@ -60,7 +60,9 @@ typedef struct {
 #define OFFSET(x) offsetof(SetTBContext, x)
 #define DEFINE_OPTIONS(filt_name, filt_type)                                               \
 static const AVOption filt_name##_options[] = {                                            \
-    { "tb", "Expression determining the output timebase", OFFSET(tb_expr), AV_OPT_TYPE_STRING, {.str="intb"}, \
+    { "expr", "set expression determining the output timebase", OFFSET(tb_expr), AV_OPT_TYPE_STRING, {.str="intb"}, \
+           .flags=AV_OPT_FLAG_##filt_type##_PARAM|AV_OPT_FLAG_FILTERING_PARAM },           \
+    { "tb",   "set expression determining the output timebase", OFFSET(tb_expr), AV_OPT_TYPE_STRING, {.str="intb"}, \
            .flags=AV_OPT_FLAG_##filt_type##_PARAM|AV_OPT_FLAG_FILTERING_PARAM },           \
     { NULL }                                                                               \
 }
@@ -118,8 +120,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
     return ff_filter_frame(outlink, frame);
 }
 
-static const char *const shorthand[] = { "tb", NULL };
-
 #if CONFIG_SETTB_FILTER
 
 DEFINE_OPTIONS(settb, VIDEO);
@@ -188,6 +188,5 @@ AVFilter avfilter_af_asettb = {
     .inputs    = avfilter_af_asettb_inputs,
     .outputs   = avfilter_af_asettb_outputs,
     .priv_class = &asettb_class,
-    .shorthand  = shorthand,
 };
 #endif