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/diracdec.c b/libavcodec/diracdec.c
index 9f3c930913..50d1d2e1d3 100644
--- a/libavcodec/diracdec.c
+++ b/libavcodec/diracdec.c
@@ -2264,7 +2264,7 @@ static int dirac_decode_frame(AVCodecContext *avctx, AVFrame *picture,
                               int *got_frame, AVPacket *pkt)
 {
     DiracContext *s     = avctx->priv_data;
-    uint8_t *buf        = pkt->data;
+    const uint8_t *buf  = pkt->data;
     int buf_size        = pkt->size;
     int i, buf_idx      = 0;
     int ret;