lavfi/field, il, noise: use av_pix_fmt_count_planes()

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/vf_field.c

@@ -55,12 +55,8 @@ static int config_props_output(AVFilterLink *outlink)
     AVFilterContext *ctx = outlink->src;
     FieldContext *field = ctx->priv;
     AVFilterLink *inlink = ctx->inputs[0];
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
-    int i;
 
-    for (i = 0; i < desc->nb_components; i++)
-        field->nb_planes = FFMAX(field->nb_planes, desc->comp[i].plane);
-    field->nb_planes++;
+    field->nb_planes = av_pix_fmt_count_planes(outlink->format);
 
     outlink->w = inlink->w;
     outlink->h = (inlink->h + (field->type == FIELD_TYPE_TOP)) / 2;

libavfilter/vf_il.c

@@ -100,11 +100,9 @@ static int config_input(AVFilterLink *inlink)
 {
     IlContext *il = inlink->dst->priv;
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
-    int i, ret;
+    int ret;
 
-    for (i = 0; i < desc->nb_components; i++)
-        il->nb_planes = FFMAX(il->nb_planes, desc->comp[i].plane);
-    il->nb_planes++;
+    il->nb_planes = av_pix_fmt_count_planes(inlink->format);
 
     il->has_alpha = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
     if ((ret = av_image_fill_linesizes(il->linesize, inlink->format, inlink->w)) < 0)

libavfilter/vf_noise.c

@@ -184,11 +184,9 @@ static int config_input(AVFilterLink *inlink)
 {
     NoiseContext *n = inlink->dst->priv;
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
-    int i, ret;
+    int ret;
 
-    for (i = 0; i < desc->nb_components; i++)
-        n->nb_planes = FFMAX(n->nb_planes, desc->comp[i].plane);
-    n->nb_planes++;
+    n->nb_planes = av_pix_fmt_count_planes(inlink->format);
 
     if ((ret = av_image_fill_linesizes(n->linesize, inlink->format, inlink->w)) < 0)
         return ret;