avcodec/dcadec: Treat the input packet's data as const

A decoder's input packet need not be writable, so we must not modify
the data.

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

1 files changed, 5 insertions, 5 deletions

diff --git a/libavcodec/dca_xll.c b/libavcodec/dca_xll.c
index aaccb7a43d..17626b3614 100644
--- a/libavcodec/dca_xll.c
+++ b/libavcodec/dca_xll.c
@@ -1040,7 +1040,7 @@ static int parse_band_data(DCAXllDecoder *s)
     return 0;
 }
 
-static int parse_frame(DCAXllDecoder *s, uint8_t *data, int size, DCAExssAsset *asset)
+static int parse_frame(DCAXllDecoder *s, const uint8_t *data, int size, DCAExssAsset *asset)
 {
     int ret;
 
@@ -1067,7 +1067,7 @@ static void clear_pbr(DCAXllDecoder *s)
     s->pbr_delay = 0;
 }
 
-static int copy_to_pbr(DCAXllDecoder *s, uint8_t *data, int size, int delay)
+static int copy_to_pbr(DCAXllDecoder *s, const uint8_t *data, int size, int delay)
 {
     if (size > DCA_XLL_PBR_BUFFER_MAX)
         return AVERROR(ENOSPC);
@@ -1081,7 +1081,7 @@ static int copy_to_pbr(DCAXllDecoder *s, uint8_t *data, int size, int delay)
     return 0;
 }
 
-static int parse_frame_no_pbr(DCAXllDecoder *s, uint8_t *data, int size, DCAExssAsset *asset)
+static int parse_frame_no_pbr(DCAXllDecoder *s, const uint8_t *data, int size, DCAExssAsset *asset)
 {
     int ret = parse_frame(s, data, size, asset);
 
@@ -1119,7 +1119,7 @@ static int parse_frame_no_pbr(DCAXllDecoder *s, uint8_t *data, int size, DCAExss
     return 0;
 }
 
-static int parse_frame_pbr(DCAXllDecoder *s, uint8_t *data, int size, DCAExssAsset *asset)
+static int parse_frame_pbr(DCAXllDecoder *s, const uint8_t *data, int size, DCAExssAsset *asset)
 {
     int ret;
 
@@ -1160,7 +1160,7 @@ fail:
     return ret;
 }
 
-int ff_dca_xll_parse(DCAXllDecoder *s, uint8_t *data, DCAExssAsset *asset)
+int ff_dca_xll_parse(DCAXllDecoder *s, const uint8_t *data, DCAExssAsset *asset)
 {
     int ret;