lavfi/aphaser: switch to AVOption-based system

doc/filters.texi

@@ -6343,9 +6343,6 @@ Add a phasing effect to the input audio.
 A phaser filter creates series of peaks and troughs in the frequency spectrum.
 The position of the peaks and troughs are modulated so that they vary over time, creating a sweeping effect.
 
-The filter accepts parameters as a list of @var{key}=@var{value}
-pairs, separated by ":".
-
 A description of the accepted parameters follows.
 
 @table @option

libavfilter/af_aphaser.c

@@ -344,8 +344,6 @@ static const AVFilterPad aphaser_outputs[] = {
     { NULL }
 };
 
-static const char *const shorthand[] = { "in_gain", "out_gain", "delay", "decay", "speed", "type", NULL };
-
 AVFilter avfilter_af_aphaser = {
     .name          = "aphaser",
     .description   = NULL_IF_CONFIG_SMALL("Add a phasing effect to the audio."),
@@ -356,5 +354,4 @@ AVFilter avfilter_af_aphaser = {
     .inputs        = aphaser_inputs,
     .outputs       = aphaser_outputs,
     .priv_class    = &aphaser_class,
-    .shorthand     = shorthand,
 };

libavfilter/avfilter.c

@@ -659,6 +659,7 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
         !strcmp(filter->filter->name,  "afade"     ) ||
         !strcmp(filter->filter->name,  "aformat") ||
         !strcmp(filter->filter->name,  "apad"      ) ||
+        !strcmp(filter->filter->name,  "aphaser"   ) ||
         !strcmp(filter->filter->name,  "ass")     ||
         !strcmp(filter->filter->name,  "blackframe") ||
         !strcmp(filter->filter->name,  "blend"     ) ||