From e843612695007cc623813073754c651ab43021f7 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 4 Mar 2014 07:19:46 +0100
Subject: [PATCH] af_channelmap: fix ONE_STR mapping mode

get_channel() returns 0 on success

CC:libav-stable@libav.org
---
 libavfilter/af_channelmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/af_channelmap.c b/libavfilter/af_channelmap.c
index 71d51e7594..3e5cc3d7e4 100644
--- a/libavfilter/af_channelmap.c
+++ b/libavfilter/af_channelmap.c
@@ -188,7 +188,7 @@ static av_cold int channelmap_init(AVFilterContext *ctx)
             s->map[i].out_channel_idx = i;
             break;
         case MAP_ONE_STR:
-            if (!get_channel(&mapping, &in_ch, separator)) {
+            if (get_channel(&mapping, &in_ch, separator) < 0) {
                 av_log(ctx, AV_LOG_ERROR, err);
                 return AVERROR(EINVAL);
             }