From 13811b19d6b45e00ff739329b6fa52ba0fefef9f Mon Sep 17 00:00:00 2001
From: Nicolas George <nicolas.george@normalesup.org>
Date: Wed, 13 Feb 2013 12:16:47 +0100
Subject: [PATCH] lavc/libopusenc: report an error if global_quality is set.

---
 libavcodec/libopusenc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/libopusenc.c b/libavcodec/libopusenc.c
index d198798929..a4aa37cdd4 100644
--- a/libavcodec/libopusenc.c
+++ b/libavcodec/libopusenc.c
@@ -107,6 +107,13 @@ static int libopus_configure_encoder(AVCodecContext *avctx, OpusMSEncoder *enc,
 {
     int ret;
 
+    if (avctx->global_quality) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Quality-based encoding not supported, "
+               "please specify a bitrate and VBR setting.\n");
+        return AVERROR(EINVAL);
+    }
+
     ret = opus_multistream_encoder_ctl(enc, OPUS_SET_BITRATE(avctx->bit_rate));
     if (ret != OPUS_OK) {
         av_log(avctx, AV_LOG_ERROR,