avcodec/decoders: Use const uint8_t* to access input packet data

These packets need not be writable, so we must not modify them.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/libopenjpegdec.c b/libavcodec/libopenjpegdec.c
index 58715b43ee..58ac6c413a 100644
--- a/libavcodec/libopenjpegdec.c
+++ b/libavcodec/libopenjpegdec.c
@@ -321,7 +321,7 @@ static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx)
 static int libopenjpeg_decode_frame(AVCodecContext *avctx, AVFrame *picture,
                                     int *got_frame, AVPacket *avpkt)
 {
-    uint8_t *buf            = avpkt->data;
+    const uint8_t *buf      = avpkt->data;
     int buf_size            = avpkt->size;
     LibOpenJPEGContext *ctx = avctx->priv_data;
     const AVPixFmtDescriptor *desc;