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avcodec/mdec: Only keep what is used from ScanTable 

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 05:49:47 +02:00
parent ec2b07db79
commit 60c3516941
1 changed files with 4 additions and 4 deletions
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8
libavcodec/mdec.c
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@ -44,7 +44,7 @@ typedef struct MDECContext {
BswapDSPContext bbdsp;
IDCTDSPContext idsp;
GetBitContext gb;
ScanTable scantable;
uint8_t permutated_scantable[64];
int version;
int qscale;
int last_dc[3];
@ -64,7 +64,7 @@ static inline int mdec_decode_block_intra(MDECContext *a, int16_t *block, int n)
int level, diff, i, j, run;
int component;
RLTable *rl = &ff_rl_mpeg1;
uint8_t * const scantable = a->scantable.permutated;
const uint8_t *const scantable = a->permutated_scantable;
const uint16_t *quant_matrix = a->quant_matrix;
const int qscale = a->qscale;
@ -223,8 +223,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_bswapdsp_init(&a->bbdsp);
ff_idctdsp_init(&a->idsp, avctx);
ff_mpeg12_init_vlcs();
ff_init_scantable(a->idsp.idct_permutation, &a->scantable,
ff_zigzag_direct);
ff_permute_scantable(a->permutated_scantable, ff_zigzag_direct,
a->idsp.idct_permutation);
avctx->pix_fmt = AV_PIX_FMT_YUVJ420P;
avctx->color_range = AVCOL_RANGE_JPEG;