From 7c65a76b16bc3a44f1592acde2176f187a058797 Mon Sep 17 00:00:00 2001
From: "Li, Zhong" <zhong.li@intel.com>
Date: Thu, 7 Dec 2017 14:44:27 +0800
Subject: lavc/qsvenc: add error messeage if ICQ unsupported.

Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Maxym Dmytrychenko <maxim.d33@gmail.com>
---
 libavcodec/qsvenc.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libavcodec')

diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c
index f6034c443d..5eacf3ca88 100644
--- a/libavcodec/qsvenc.c
+++ b/libavcodec/qsvenc.c
@@ -295,6 +295,12 @@ static int select_rc_mode(AVCodecContext *avctx, QSVEncContext *q)
         return AVERROR(EINVAL);
     }
 
+    if (!want_qscale && avctx->global_quality > 0 && !QSV_HAVE_ICQ){
+        av_log(avctx, AV_LOG_ERROR,
+               "ICQ ratecontrol mode requested, but is not supported by this SDK version\n");
+        return AVERROR(ENOSYS);
+    }
+
     if (want_qscale) {
         rc_mode = MFX_RATECONTROL_CQP;
         rc_desc = "constant quantization parameter (CQP)";
-- 
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