lavfi/bbox: switch to ff_filter_frame() API

libavfilter/vf_bbox.c

@@ -56,11 +56,10 @@ static int query_formats(AVFilterContext *ctx)
     return 0;
 }
 
-static int end_frame(AVFilterLink *inlink)
+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
 {
     AVFilterContext *ctx = inlink->dst;
     BBoxContext *bbox = ctx->priv;
-    AVFilterBufferRef *picref = inlink->cur_buf;
     FFBoundingBox box;
     int has_bbox, w, h;
 
@@ -86,7 +85,7 @@ static int end_frame(AVFilterLink *inlink)
     av_log(ctx, AV_LOG_INFO, "\n");
 
     bbox->frame++;
-    return ff_end_frame(inlink->dst->outputs[0]);
+    return ff_filter_frame(inlink->dst->outputs[0], picref);
 }
 
 static const AVFilterPad bbox_inputs[] = {
@@ -94,8 +93,7 @@ static const AVFilterPad bbox_inputs[] = {
         .name             = "default",
         .type             = AVMEDIA_TYPE_VIDEO,
         .get_video_buffer = ff_null_get_video_buffer,
-        .start_frame      = ff_null_start_frame,
-        .end_frame        = end_frame,
+        .filter_frame     = filter_frame,
         .min_perms        = AV_PERM_READ,
     },
     { NULL }