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avcodec/dnxhddec: Only keep what is used from ScanTable

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Namely ScanTable.permutated.

Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-10-20 04:42:21 +02:00
parent 1da5da19b1
commit b1bcff3ac0
1 changed files with 4 additions and 4 deletions
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8
libavcodec/dnxhddec.c
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@ -65,7 +65,7 @@ typedef struct DNXHDContext {
int cur_field; ///< current interlaced field
VLC ac_vlc, dc_vlc, run_vlc;
IDCTDSPContext idsp;
ScanTable scantable;
uint8_t permutated_scantable[64];
const CIDEntry *cid_table;
int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
int is_444;
@ -275,8 +275,8 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
if (ctx->bit_depth != old_bit_depth) {
ff_blockdsp_init(&ctx->bdsp);
ff_idctdsp_init(&ctx->idsp, ctx->avctx);
ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
ff_zigzag_direct);
ff_permute_scantable(ctx->permutated_scantable, ff_zigzag_direct,
ctx->idsp.idct_permutation);
}
// make sure profile size constraints are respected
@ -436,7 +436,7 @@ static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
break;
}
j = ctx->scantable.permutated[i];
j = ctx->permutated_scantable[i];
level *= scale[i];
level += scale[i] >> 1;
if (level_bias < 32 || weight_matrix[i] != level_bias)