From 36c274057a9157c8a6a7335dca8ac82678a25b63 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Sat, 30 Apr 2022 16:33:07 +0200
Subject: avfilter/avf_ahistogram: request new frames only when needed

---
 libavfilter/avf_ahistogram.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavfilter/avf_ahistogram.c b/libavfilter/avf_ahistogram.c
index 4f2059f26e..d14e0bcfac 100644
--- a/libavfilter/avf_ahistogram.c
+++ b/libavfilter/avf_ahistogram.c
@@ -436,6 +436,11 @@ static int activate(AVFilterContext *ctx)
     if (ret > 0)
         return filter_frame(inlink, in);
 
+    if (ff_inlink_queued_samples(inlink) >= s->nb_samples) {
+        ff_filter_set_ready(ctx, 10);
+        return 0;
+    }
+
     FF_FILTER_FORWARD_STATUS(inlink, outlink);
     FF_FILTER_FORWARD_WANTED(outlink, inlink);
 
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