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);
}
}
void
decoder_mbintra(DECODER * dec,
MACROBLOCK * pMB,
const uint32 x_pos,
const uint32 y_pos,
const uint32 acpred_flag,
const uint32 cbp,
Bitstream * bs,
const uint32 quant, const uint32 intra_dc_threshold)
{
uint32 stride = dec->edged_width;
uint32 stride2 = stride / 2;
uint32 next_block = stride * 8;
uint32 i,j;
uint32 iQuant = pMB->quant;
uint8 *pY_Cur, *pU_Cur, *pV_Cur;
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
memset(block, 0, 6 * 64 * sizeof(int16));
int16* tmpBlock = NULL;
for (i = 0; i < 6; i++)
{
uint32 iDcScaler = get_dc_scaler(iQuant, (i < 4) ? 1 : 0);
int16 predictors[8];
int start_coeff;
start_timer();
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i,
&block[i * 64], iQuant, iDcScaler, predictors,
dec->slice);
if (!acpred_flag)
{
pMB->acpred_directions[i] = 0;
}
stop_prediction_timer();
if (quant < intra_dc_threshold)
{
int dc_size;
int dc_dif;
dc_size =
i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs);
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0;
if (dc_size > 8)
{
BitstreamSkip(bs, 1); // marker
}
block[i * 64] = dc_dif;
start_coeff = 1;
}
else
{
start_coeff = 0;
}
start_timer();
if (cbp & (1 << (5 - i))) // coded
{
get_intra_block(bs, &block[i * 64],
pMB->acpred_directions[i], start_coeff);
}
stop_coding_timer();
start_timer();
add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors);
stop_prediction_timer();
start_timer();
dequant_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler);
stop_iquant_timer();
/*start_timer();
idct(&data[i * 64]);
stop_idct_timer();*/
if(tmpBlock!=NULL)
{
start_timer();
idct_dual(tmpBlock, &data[i * 64]);
stop_idct_timer();
tmpBlock = NULL;
}
else
{
tmpBlock = &data[i * 64];
}
}
start_timer();
transfer_16to8copy(pY_Cur, &data[0 * 64], stride);
transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride);
transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride);
transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride);
transfer_16to8copy(pU_Cur, &data[4 * 64], stride2);
transfer_16to8copy(pV_Cur, &data[5 * 64], stride2);
stop_transfer_timer();
#if 0
printf("(%d,%d)\n",x_pos,y_pos);
printf("pY_Cur = [\n");
for (j = 0; j < 8; j++)
for (i = 0; i < 8; i++)
printf(((i+1)%8)? "%5d " : "%5d\n", pY_Cur[j * stride + i]);
printf("\n");
printf("pY_Cur + 8 = [\n");
for (j = 0; j < 8; j++)
for (i = 0; i < 8; i++)
printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+8)[j * stride + i]);
printf("\n");
printf("pY_Cur+ next_block = [\n");
for (j = 0; j < 8; j++)
for (i = 0; i < 8; i++)
printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+ next_block)[j * stride + i]);
printf("\n");
printf("pY_Cur+ next_block +8= [\n");
for (j = 0; j < 8; j++)
for (i = 0; i < 8; i++)
printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+ next_block+8)[j * stride + i]);
printf("\n");
#endif
}