static int find_best_16x16_intra
(
VP9_COMP *cpi,
YV12_BUFFER_CONFIG *buf,
int mb_y_offset,
MB_PREDICTION_MODE *pbest_mode
) {
MACROBLOCK *const x = &cpi->mb;
MACROBLOCKD *const xd = &x->e_mbd;
MB_PREDICTION_MODE best_mode = -1, mode;
unsigned int best_err = INT_MAX;
// calculate SATD for each intra prediction mode;
// we're intentionally not doing 4x4, we just want a rough estimate
for (mode = DC_PRED; mode <= TM_PRED; mode++) {
unsigned int err;
xd->mode_info_context->mbmi.mode = mode;
vp9_build_intra_predictors_mby(xd);
err = vp9_sad16x16(xd->predictor, 16, buf->y_buffer + mb_y_offset,
buf->y_stride, best_err);
// find best
if (err < best_err) {
best_err = err;
best_mode = mode;
}
}
if (pbest_mode)
*pbest_mode = best_mode;
return best_err;
}
void vp9_encode_intra16x16mby(MACROBLOCK *x) {
MACROBLOCKD *xd = &x->e_mbd;
BLOCK *b = &x->block[0];
TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
#if CONFIG_COMP_INTRA_PRED
if (xd->mode_info_context->mbmi.second_mode == (MB_PREDICTION_MODE)(DC_PRED - 1))
#endif
vp9_build_intra_predictors_mby(xd);
#if CONFIG_COMP_INTRA_PRED
else
vp9_build_comp_intra_predictors_mby(xd);
#endif
vp9_subtract_mby(x->src_diff, *(b->base_src), xd->predictor, b->src_stride);
if (tx_size == TX_16X16) {
vp9_transform_mby_16x16(x);
vp9_quantize_mby_16x16(x);
if (x->optimize)
vp9_optimize_mby_16x16(x);
vp9_inverse_transform_mby_16x16(xd);
} else if (tx_size == TX_8X8) {
vp9_transform_mby_8x8(x);
vp9_quantize_mby_8x8(x);
if (x->optimize)
vp9_optimize_mby_8x8(x);
vp9_inverse_transform_mby_8x8(xd);
} else {
vp9_transform_mby_4x4(x);
vp9_quantize_mby_4x4(x);
if (x->optimize)
vp9_optimize_mby_4x4(x);
vp9_inverse_transform_mby_4x4(xd);
}
vp9_recon_mby(xd);
}
