p->buf[delayA] = p->lastA[filter];
p->buf[adaptA] = APESIGN(p->buf[delayA]);
- p->buf[delayA - 1] = p->buf[delayA] - p->buf[delayA - 1];
+ p->buf[delayA - 1] = p->buf[delayA] - (unsigned)p->buf[delayA - 1];
p->buf[adaptA - 1] = APESIGN(p->buf[delayA - 1]);
predictionA = p->buf[delayA ] * p->coeffsA[filter][0] +
/* Apply a scaled first-order filter compression */
p->buf[delayB] = p->filterA[filter ^ 1] - ((int)(p->filterB[filter] * 31U) >> 5);
p->buf[adaptB] = APESIGN(p->buf[delayB]);
- p->buf[delayB - 1] = p->buf[delayB] - p->buf[delayB - 1];
+ p->buf[delayB - 1] = p->buf[delayB] - (unsigned)p->buf[delayB - 1];
p->buf[adaptB - 1] = APESIGN(p->buf[delayB - 1]);
p->filterB[filter] = p->filterA[filter ^ 1];
/* Version 3.98 and later files */
/* Update the adaption coefficients */
- absres = FFABS(res);
+ absres = res < 0 ? -(unsigned)res : res;
if (absres)
*f->adaptcoeffs = APESIGN(res) *
(8 << ((absres > f->avg * 3) + (absres > f->avg * 4 / 3)));