avcodec/vlc: Use structure instead of VLC_TYPE array as VLC element

In C, qualifiers for arrays are broken:
const VLC_TYPE (*foo)[2] is a pointer to an array of two const VLC_TYPE
elements and unfortunately this is not compatible with a pointer
to a const array of two VLC_TYPE, because the latter does not exist
as array types are never qualified (the qualifier applies to the base
type instead). This is the reason why get_vlc2() doesn't accept
a const VLC table despite not modifying the table at all, as
there is no automatic conversion from VLC_TYPE (*)[2] to
const VLC_TYPE (*)[2].

Fix this by using a structure VLCElem for the VLC table.
This also has the advantage of making it clear which
element is which.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 1a745331f4..8ca1b0dfe3 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -1197,7 +1197,7 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
     /* local references to structure members to avoid repeated dereferences */
     int *coded_fragment_list   = s->coded_fragment_list[plane];
     Vp3Fragment *all_fragments = s->all_fragments;
-    VLC_TYPE(*vlc_table)[2] = table->table;
+    const VLCElem *vlc_table = table->table;
 
     if (num_coeffs < 0) {
         av_log(s->avctx, AV_LOG_ERROR,