From 0cd8769207f1a89fc2236aab9da1c77f5a0b490a Mon Sep 17 00:00:00 2001
From: Joose Sainio <joose.sainio@tuni.fi>
Date: Fri, 1 Jan 2021 22:31:17 +0800
Subject: [PATCH] avcodec/libkvazaar: Set default ratecontrol algorithm for
 libkvazaar

The standalone version of Kvazaar sets a default ratecontrol algorithm when
bitrate is set. Mirror this behaviour.

Signed-off-by: Joose Sainio <joose.sainio@tuni.fi>
Signed-off-by: Linjie Fu <linjie.justin.fu@gmail.com>
---
 libavcodec/libkvazaar.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavcodec/libkvazaar.c b/libavcodec/libkvazaar.c
index 9032547678..d94cf995c8 100644
--- a/libavcodec/libkvazaar.c
+++ b/libavcodec/libkvazaar.c
@@ -95,6 +95,9 @@ static av_cold int libkvazaar_init(AVCodecContext *avctx)
     cfg->target_bitrate = avctx->bit_rate;
     cfg->vui.sar_width  = avctx->sample_aspect_ratio.num;
     cfg->vui.sar_height = avctx->sample_aspect_ratio.den;
+    if (avctx->bit_rate) {
+        cfg->rc_algorithm = KVZ_LAMBDA;
+    }
 
     if (ctx->kvz_params) {
         AVDictionary *dict = NULL;