From b9f7a677083647d85e583d6d7384938766a293d7 Mon Sep 17 00:00:00 2001
From: wm4 <nfxjfg@googlemail.com>
Date: Fri, 8 May 2015 17:01:50 +0200
Subject: [PATCH] png: Set the color range as full range

The format uses full range for the gray formats.

CC: libav-stable@libav.org
---
 libavcodec/pngdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index c8bfa36398..823d77f027 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -646,6 +646,8 @@ static av_cold int png_dec_init(AVCodecContext *avctx)
 {
     PNGDecContext *s = avctx->priv_data;
 
+    avctx->color_range = AVCOL_RANGE_JPEG;
+
     s->prev = av_frame_alloc();
     if (!s->prev)
         return AVERROR(ENOMEM);