avfilter/vf_weave: use ff_formats_pixdesc_filter()

libavfilter/vf_weave.c

@@ -54,17 +54,11 @@ static int query_formats(AVFilterContext *ctx)
     AVFilterFormats *formats = NULL;
     int ret;
 
-    for (int fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
-        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
-
-        if (!(desc->flags & AV_PIX_FMT_FLAG_PAL) &&
-            !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) {
-            if ((ret = ff_add_format(&formats, fmt)) < 0) {
-                return ret;
-            }
-        }
-    }
-
+    ret = ff_formats_pixdesc_filter(&formats, 0,
+                                    AV_PIX_FMT_FLAG_PAL |
+                                    AV_PIX_FMT_FLAG_HWACCEL);
+    if (ret < 0)
+        return ret;
     return ff_set_common_formats(ctx, formats);
 }