From 9144f450411bbbbd2ee55133e86ace9b0201c25f Mon Sep 17 00:00:00 2001
From: wang-bin <wbsecg1@gmail.com>
Date: Fri, 3 Jul 2020 14:09:54 +0800
Subject: [PATCH 3/3] nvenc: check sdk 10.0 ptrs at runtime

---
 libavcodec/nvenc.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index cec59f02f3..c421c292c8 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -1248,11 +1248,12 @@ static av_cold int nvenc_setup_encoder(AVCodecContext *avctx)
 #ifdef NVENC_HAVE_NEW_PRESETS
         ctx->init_encode_params.tuningInfo = ctx->tuning_info;
 
-        nv_status = p_nvenc->nvEncGetEncodePresetConfigEx(ctx->nvencoder,
-            ctx->init_encode_params.encodeGUID,
-            ctx->init_encode_params.presetGUID,
-            ctx->init_encode_params.tuningInfo,
-            &preset_config);
+        if (p_nvenc->nvEncGetEncodePresetConfigEx)
+            nv_status = p_nvenc->nvEncGetEncodePresetConfigEx(ctx->nvencoder,
+                ctx->init_encode_params.encodeGUID,
+                ctx->init_encode_params.presetGUID,
+                ctx->init_encode_params.tuningInfo,
+                &preset_config);
 #endif
     } else {
 #ifdef NVENC_HAVE_NEW_PRESETS
-- 
2.17.1