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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2025-05-25 17:02:17 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2025-06-21 22:08:51 +0200 |
| commit | 5507da21e663a9c30e260a113aa26218dec3bade (patch) | |
| tree | 098eccb81a7bece905bb6e16229a51bb0747ca04 | |
| parent | ea4b9a121d05bb29d4a2b4fe2ebfd72524461a69 (diff) | |
| download | ffmpeg-5507da21e663a9c30e260a113aa26218dec3bade.tar.gz | |
avcodec/ituh263dec: Don't process unnecessarily many coefficients
Overriding the number of coefficients is only necessary if
ac_pred is in used, not for h263_aic alone (for which only
the DC coefficient is predicted) as it is done here.
And since d50635cd247e17fe16c63219b9ae80d45a8185b1
the H.263 unquantize-intra functions override the number of
coefficients in case of ac_pred, so we don't have to do this here.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
| -rw-r--r-- | libavcodec/ituh263dec.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libavcodec/ituh263dec.c b/libavcodec/ituh263dec.c index 21c78f3cb5..5e1d15e557 100644 --- a/libavcodec/ituh263dec.c +++ b/libavcodec/ituh263dec.c @@ -542,10 +542,10 @@ static int h263_decode_block(MpegEncContext * s, int16_t * block, scan_table = s->intra_scantable.permutated; if (s->h263_aic && s->mb_intra) { + i = 0; if (!coded) goto not_coded; rl = &ff_rl_intra_aic; - i = 0; if (s->ac_pred) { if (s->h263_aic_dir) scan_table = s->permutated_intra_v_scantable; /* left */ @@ -672,7 +672,6 @@ retry: if (s->mb_intra && s->h263_aic) { not_coded: h263_pred_acdc(s, block, n); - i = 63; } s->block_last_index[n] = i; return 0; |