From 8edc17b639c4ac47913c467107ffb43c67c64890 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 19 Jun 2015 16:46:06 +0200
Subject: [PATCH] avcodec/dpxenc: implement write16/32 as functions

Fixes undefined behavior and segfault

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/dpxenc.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/libavcodec/dpxenc.c b/libavcodec/dpxenc.c
index aca745bb58..76aa0cc473 100644
--- a/libavcodec/dpxenc.c
+++ b/libavcodec/dpxenc.c
@@ -75,17 +75,20 @@ static av_cold int encode_init(AVCodecContext *avctx)
     return 0;
 }
 
-#define write16(p, value) \
-do { \
-    if (s->big_endian) AV_WB16(p, value); \
-    else               AV_WL16(p, value); \
-} while(0)
+static av_always_inline void write16_internal(int big_endian, void *p, int value)
+{
+    if (big_endian) AV_WB16(p, value);
+    else            AV_WL16(p, value);
+}
 
-#define write32(p, value) \
-do { \
-    if (s->big_endian) AV_WB32(p, value); \
-    else               AV_WL32(p, value); \
-} while(0)
+static av_always_inline void write32_internal(int big_endian, void *p, int value)
+{
+    if (big_endian) AV_WB32(p, value);
+    else            AV_WL32(p, value);
+}
+
+#define write16(p, value) write16_internal(s->big_endian, p, value)
+#define write32(p, value) write32_internal(s->big_endian, p, value)
 
 static void encode_rgb48_10bit(AVCodecContext *avctx, const AVPicture *pic, uint8_t *dst)
 {