diff options
| author | Peter Ross <pross@xvid.org> | 2011-02-13 09:36:29 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-02-14 23:58:19 +0100 |
| commit | f20886e464874b246ae6acfea41f35c277b51752 (patch) | |
| tree | 1547a160f151435fc6941a14402b5b733786fab4 /libavcodec | |
| parent | a093650b6c82ad84b257dd21e7d0028712f4bc34 (diff) | |
| download | ffmpeg-f20886e464874b246ae6acfea41f35c277b51752.tar.gz | |
bink: permute Bink version 'b' quant matrices by inverse scan order
This fixes visual glitches in Bink version 'b' files, as the quantization
tables were not being permuted.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 231539217431c32d4f22a16ee2834e24f54611f4)
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/bink.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/libavcodec/bink.c b/libavcodec/bink.c index f13e1c7a1b..95cfc92721 100644 --- a/libavcodec/bink.c +++ b/libavcodec/bink.c @@ -1210,6 +1210,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac */ static av_cold void binkb_calc_quant() { + uint8_t inv_bink_scan[64]; double s[64]; int i, j; @@ -1228,17 +1229,21 @@ static av_cold void binkb_calc_quant() } } + for (i = 0; i < 64; i++) + inv_bink_scan[bink_scan[i]] = i; + for (j = 0; j < 16; j++) { for (i = 0; i < 64; i++) { + int k = inv_bink_scan[i]; if (s[i] == 1.0) { - binkb_intra_quant[j][i] = (1L << 12) * binkb_intra_seed[i] * + binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] * binkb_num[j]/binkb_den[j]; - binkb_inter_quant[j][i] = (1L << 12) * binkb_inter_seed[i] * + binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] * binkb_num[j]/binkb_den[j]; } else { - binkb_intra_quant[j][i] = (1L << 12) * binkb_intra_seed[i] * s[i] * + binkb_intra_quant[j][k] = (1L << 12) * binkb_intra_seed[i] * s[i] * binkb_num[j]/(double)binkb_den[j]; - binkb_inter_quant[j][i] = (1L << 12) * binkb_inter_seed[i] * s[i] * + binkb_inter_quant[j][k] = (1L << 12) * binkb_inter_seed[i] * s[i] * binkb_num[j]/(double)binkb_den[j]; } } |