avfilter/vf_grayworld: Use formats list instead of query function

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavfilter/vf_grayworld.c

@@ -56,15 +56,6 @@ static const AVOption grayworld_options[] = {
 
 AVFILTER_DEFINE_CLASS(grayworld);
 
-static int query_formats(AVFilterContext *ctx)
-{
-    static const enum AVPixelFormat pix_fmts[] = {
-        AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
-        AV_PIX_FMT_NONE,
-    };
-    return ff_set_common_formats_from_list(ctx, pix_fmts);
-}
-
 static void apply_matrix(const float matrix[3][3], const float input[3], float output[3])
 {
     output[0] = matrix[0][0] * input[0] + matrix[0][1] * input[1] + matrix[0][2] * input[2];
@@ -331,7 +322,7 @@ const AVFilter ff_vf_grayworld = {
     .priv_class    = &grayworld_class,
     FILTER_INPUTS(grayworld_inputs),
     FILTER_OUTPUTS(grayworld_outputs),
-    FILTER_QUERY_FUNC(query_formats),
+    FILTER_PIXFMTS(AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32),
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
     .uninit        = uninit,
 };