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

doc/filters.texi

@@ -6095,9 +6095,7 @@ which specifies the number of neighbor alive cells which will make a
 cell stay alive or born. The @option{rule} option allows to specify
 the rule to adopt.
 
-This source accepts a list of options in the form of
-@var{key}=@var{value} pairs separated by ":". A description of the
-accepted options follows.
+This source accepts the following options:
 
 @table @option
 @item filename, f

libavfilter/avfilter.c

@@ -680,6 +680,7 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
         !strcmp(filter->filter->name, "gradfun"    ) ||
         !strcmp(filter->filter->name, "hqdn3d"     ) ||
         !strcmp(filter->filter->name, "ocv"        ) ||
+        !strcmp(filter->filter->name, "life"       ) ||
         !strcmp(filter->filter->name, "lut"        ) ||
         !strcmp(filter->filter->name, "lutyuv"     ) ||
         !strcmp(filter->filter->name, "lutrgb"     ) ||

libavfilter/vsrc_life.c

@@ -225,12 +225,6 @@ static int init(AVFilterContext *ctx, const char *args)
     LifeContext *life = ctx->priv;
     int ret;
 
-    life->class = &life_class;
-    av_opt_set_defaults(life);
-
-    if ((ret = av_set_options_string(life, args, "=", ":")) < 0)
-        return ret;
-
     if (!life->w && !life->filename)
         av_opt_set(life, "size", "320x240", 0);