avfilter/af_silencedetect: support all channel counts

libavfilter/af_silencedetect.c

@@ -197,7 +197,6 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
 
 static int query_formats(AVFilterContext *ctx)
 {
-    AVFilterChannelLayouts *layouts = NULL;
     static const enum AVSampleFormat sample_fmts[] = {
         AV_SAMPLE_FMT_DBL,
         AV_SAMPLE_FMT_FLT,
@@ -205,12 +204,7 @@ static int query_formats(AVFilterContext *ctx)
         AV_SAMPLE_FMT_S16,
         AV_SAMPLE_FMT_NONE
     };
-    int ret;
-
-    layouts = ff_all_channel_layouts();
-    if (!layouts)
-        return AVERROR(ENOMEM);
-    ret = ff_set_common_channel_layouts(ctx, layouts);
+    int ret = ff_set_common_all_channel_counts(ctx);
     if (ret < 0)
         return ret;