Author: kostya
Date: Fri Jan 15 10:30:31 2010
New Revision: 5587
Log:
refactor dequantization a bit
Modified:
indeo5/ivi_common.c
Modified: indeo5/ivi_common.c
==============================================================================
--- indeo5/ivi_common.c Fri Jan 15 10:19:35 2010 (r5586)
+++ indeo5/ivi_common.c Fri Jan 15 10:30:31 2010 (r5587)
@@ -383,11 +383,8 @@ int ff_ivi_decode_blocks(GetBitContext *
q = (base_tab[pos] * scale_tab[quant]) >> 8;
q += !q; // ensure the q always >= 1
- if (q != 1) {
- if (val > 0) {
- val = (val * q) + (q >> 1) - (q & 1);
- } else
- val = (val * q) - (q >> 1) + (q & 1);
+ if (q > 1) {
+ val = val * q + FFSIGN(val) * ((q >> 1) - (q & 1));
}
trvec[pos] = val;
col_flags[pos & col_mask] |= val; /* track columns
containing non-zero coeffs */
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