void
MBPrediction(FRAMEINFO * frame,
uint32_t x,
uint32_t y,
uint32_t mb_width,
int16_t qcoeff[6 * 64],
const int bound)
{
int32_t j;
int32_t iDcScaler, iQuant;
int S = 0;
int16_t predictors[6][8];
MACROBLOCK *pMB = &frame->mbs[x + y * mb_width];
iQuant = pMB->quant;
if ((pMB->mode == MODE_INTRA) || (pMB->mode == MODE_INTRA_Q)) {
for (j = 0; j < 6; j++) {
iDcScaler = get_dc_scaler(iQuant, j<4);
predict_acdc(frame->mbs, x, y, mb_width, j, &qcoeff[j * 64],
iQuant, iDcScaler, predictors[j], bound);
if ((frame->vop_flags & XVID_VOP_HQACPRED))
S += calc_acdc_bits(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]);
else
S += calc_acdc_coeff(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]);
}
if (S<=0) { /* dont predict */
for (j = 0; j < 6; j++)
pMB->acpred_directions[j] = 0;
}else{
for (j = 0; j < 6; j++)
apply_acdc(pMB, j, &qcoeff[j * 64], predictors[j]);
}
pMB->cbp = calc_cbp(qcoeff);
}
}
void
MBPrediction(FRAMEINFO * frame,
uint32_t x,
uint32_t y,
uint32_t mb_width,
int16_t qcoeff[6 * 64])
{
int32_t j;
int32_t iDcScaler, iQuant = frame->quant;
int32_t S = 0;
int16_t predictors[6][8];
MACROBLOCK *pMB = &frame->mbs[x + y * mb_width];
if ((pMB->mode == MODE_INTRA) || (pMB->mode == MODE_INTRA_Q)) {
for (j = 0; j < 6; j++) {
iDcScaler = get_dc_scaler(iQuant, (j < 4) ? 1 : 0);
predict_acdc(frame->mbs, x, y, mb_width, j, &qcoeff[j * 64],
iQuant, iDcScaler, predictors[j], 0);
S += calc_acdc(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]);
}
if (S < 0) /* dont predict */
{
for (j = 0; j < 6; j++) {
pMB->acpred_directions[j] = 0;
}
} else {
for (j = 0; j < 6; j++) {
apply_acdc(pMB, j, &qcoeff[j * 64], predictors[j]);
}
}
pMB->cbp = calc_cbp(qcoeff);
}
}
