lavfi/af_aiir: convert to query_func2()

Drop redundant ff_set_common_all_channel_counts() /
ff_set_common_all_samplerates() calls, since those happen implicitly in
generic code.

libavfilter/af_aiir.c

@@ -78,9 +78,11 @@ typedef struct AudioIIRContext {
     int (*iir_channel)(AVFilterContext *ctx, void *arg, int ch, int nb_jobs);
 } AudioIIRContext;
 
-static int query_formats(AVFilterContext *ctx)
+static int query_formats(const AVFilterContext *ctx,
+                         AVFilterFormatsConfig **cfg_in,
+                         AVFilterFormatsConfig **cfg_out)
 {
-    AudioIIRContext *s = ctx->priv;
+    const AudioIIRContext *s = ctx->priv;
     AVFilterFormats *formats;
     enum AVSampleFormat sample_fmts[] = {
         AV_SAMPLE_FMT_DBLP,
@@ -93,23 +95,17 @@ static int query_formats(AVFilterContext *ctx)
     int ret;
 
     if (s->response) {
-        AVFilterLink *videolink = ctx->outputs[1];
-
         formats = ff_make_format_list(pix_fmts);
-        if ((ret = ff_formats_ref(formats, &videolink->incfg.formats)) < 0)
+        if ((ret = ff_formats_ref(formats, &cfg_out[1]->formats)) < 0)
             return ret;
     }
 
-    ret = ff_set_common_all_channel_counts(ctx);
-    if (ret < 0)
-        return ret;
-
     sample_fmts[0] = s->sample_format;
-    ret = ff_set_common_formats_from_list(ctx, sample_fmts);
+    ret = ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, sample_fmts);
     if (ret < 0)
         return ret;
 
-    return ff_set_common_all_samplerates(ctx);
+    return 0;
 }
 
 #define IIR_CH(name, type, min, max, need_clipping)                     \
@@ -1572,7 +1568,7 @@ const AVFilter ff_af_aiir = {
     .init          = init,
     .uninit        = uninit,
     FILTER_INPUTS(inputs),
-    FILTER_QUERY_FUNC(query_formats),
+    FILTER_QUERY_FUNC2(query_formats),
     .flags         = AVFILTER_FLAG_DYNAMIC_OUTPUTS |
                      AVFILTER_FLAG_SLICE_THREADS,
 };