@@ -210,6 +210,29 @@ static int are_gains_pure(const PanContext *pan)

     return 1;

 }

+static int query_formats(AVFilterContext *ctx)

+{

+    PanContext *pan = ctx->priv;

+    AVFilterLink *inlink  = ctx->inputs[0];

+    AVFilterLink *outlink = ctx->outputs[0];

+    AVFilterFormats *formats;

+

+    pan->pure_gains = are_gains_pure(pan);

+    /* libswr supports any sample and packing formats */

+    avfilter_set_common_sample_formats(ctx, avfilter_make_all_formats(AVMEDIA_TYPE_AUDIO));

+    avfilter_set_common_packing_formats(ctx, avfilter_make_all_packing_formats());

+

+    // inlink supports any channel layout

+    formats = avfilter_make_all_channel_layouts();

+    avfilter_formats_ref(formats, &inlink->out_chlayouts);

+

+    // outlink supports only requested output channel layout

+    formats = NULL;

+    avfilter_add_format(&formats, pan->out_channel_layout);

+    avfilter_formats_ref(formats, &outlink->in_chlayouts);

+    return 0;

+}

+

 static int config_props(AVFilterLink *link)

 {

     AVFilterContext *ctx = link->dst;

@@ -343,29 +366,6 @@ static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *insamples)

     avfilter_unref_buffer(insamples);

 }

-static int query_formats(AVFilterContext *ctx)

-{

-    PanContext *pan = ctx->priv;

-    AVFilterLink *inlink  = ctx->inputs[0];

-    AVFilterLink *outlink = ctx->outputs[0];

-    AVFilterFormats *formats;

-

-    pan->pure_gains = are_gains_pure(pan);

-    /* libswr supports any sample and packing formats */

-    avfilter_set_common_sample_formats(ctx, avfilter_make_all_formats(AVMEDIA_TYPE_AUDIO));

-    avfilter_set_common_packing_formats(ctx, avfilter_make_all_packing_formats());

-

-    // inlink supports any channel layout

-    formats = avfilter_make_all_channel_layouts();

-    avfilter_formats_ref(formats, &inlink->out_chlayouts);

-

-    // outlink supports only requested output channel layout

-    formats = NULL;

-    avfilter_add_format(&formats, pan->out_channel_layout);

-    avfilter_formats_ref(formats, &outlink->in_chlayouts);

-    return 0;

-}

-

 static av_cold void uninit(AVFilterContext *ctx)

 {

     PanContext *pan = ctx->priv;