lavfi/af_virtualbass: convert to query_func2()

Also, drop redundant calls that also happen implicitly in generic code.

libavfilter/af_virtualbass.c

@@ -48,21 +48,29 @@ static const AVOption virtualbass_options[] = {
 
 AVFILTER_DEFINE_CLASS(virtualbass);
 
-static int query_formats(AVFilterContext *ctx)
+static int query_formats(const AVFilterContext *ctx,
+                         AVFilterFormatsConfig **cfg_in,
+                         AVFilterFormatsConfig **cfg_out)
 {
+    static const enum AVSampleFormat formats[] = {
+        AV_SAMPLE_FMT_DBLP,
+        AV_SAMPLE_FMT_NONE,
+    };
+
     AVFilterChannelLayouts *in_layout = NULL, *out_layout = NULL;
-    AVFilterFormats *formats = NULL;
     int ret;
 
-    if ((ret = ff_add_format                 (&formats, AV_SAMPLE_FMT_DBLP )) < 0 ||
-        (ret = ff_set_common_formats         (ctx,      formats            )) < 0 ||
-        (ret = ff_add_channel_layout         (&in_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)) < 0 ||
-        (ret = ff_channel_layouts_ref(in_layout, &ctx->inputs[0]->outcfg.channel_layouts)) < 0 ||
+    ret = ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, formats);
+    if (ret < 0)
+        return ret;
+
+    if ((ret = ff_add_channel_layout         (&in_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)) < 0 ||
+        (ret = ff_channel_layouts_ref(in_layout, &cfg_in[0]->channel_layouts)) < 0 ||
         (ret = ff_add_channel_layout         (&out_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_2POINT1)) < 0 ||
-        (ret = ff_channel_layouts_ref(out_layout, &ctx->outputs[0]->incfg.channel_layouts)) < 0)
+        (ret = ff_channel_layouts_ref(out_layout, &cfg_out[0]->channel_layouts)) < 0)
         return ret;
 
-    return ff_set_common_all_samplerates(ctx);
+    return 0;
 }
 
 static int config_input(AVFilterLink *inlink)
@@ -170,7 +178,7 @@ const AVFilter ff_af_virtualbass = {
     .priv_class      = &virtualbass_class,
     FILTER_INPUTS(inputs),
     FILTER_OUTPUTS(ff_audio_default_filterpad),
-    FILTER_QUERY_FUNC(query_formats),
+    FILTER_QUERY_FUNC2(query_formats),
     .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
     .process_command = ff_filter_process_command,
 };