lavfi/apad: use standard options parsing.

libavfilter/af_apad.c

@@ -58,17 +58,9 @@ AVFILTER_DEFINE_CLASS(apad);
 
 static av_cold int init(AVFilterContext *ctx, const char *args)
 {
-    int ret;
     APadContext *apad = ctx->priv;
 
-    apad->class = &apad_class;
     apad->next_pts = AV_NOPTS_VALUE;
-
-    av_opt_set_defaults(apad);
-
-    if ((ret = av_opt_set_from_string(apad, args, NULL, "=", ":")) < 0)
-        return ret;
-
     if (apad->whole_len && apad->pad_len) {
         av_log(ctx, AV_LOG_ERROR, "Both whole and pad length are set, this is not possible\n");
         return AVERROR(EINVAL);
@@ -152,6 +144,8 @@ static const AVFilterPad apad_outputs[] = {
     { NULL },
 };
 
+static const char *const shorthand[] = { NULL };
+
 AVFilter avfilter_af_apad = {
     .name          = "apad",
     .description   = NULL_IF_CONFIG_SMALL("Pad audio with silence."),
@@ -160,4 +154,5 @@ AVFilter avfilter_af_apad = {
     .inputs        = apad_inputs,
     .outputs       = apad_outputs,
     .priv_class    = &apad_class,
+    .shorthand     = shorthand,
 };