ref: 397aad3ec28020a9b766e362e061701783c9633e
dir: /vp8/common/arm/reconintra4x4_arm.c/
/* * Copyright (c) 2010 The VP8 project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include "vpx_ports/config.h" #include "recon.h" #include "vpx_mem/vpx_mem.h" #include "reconintra.h" void vp8_predict_intra4x4(BLOCKD *x, int b_mode, unsigned char *predictor) { int i, r, c; unsigned char *Above = *(x->base_dst) + x->dst - x->dst_stride; unsigned char Left[4]; unsigned char top_left = Above[-1]; Left[0] = (*(x->base_dst))[x->dst - 1]; Left[1] = (*(x->base_dst))[x->dst - 1 + x->dst_stride]; Left[2] = (*(x->base_dst))[x->dst - 1 + 2 * x->dst_stride]; Left[3] = (*(x->base_dst))[x->dst - 1 + 3 * x->dst_stride]; switch (b_mode) { case B_DC_PRED: { int expected_dc = 0; for (i = 0; i < 4; i++) { expected_dc += Above[i]; expected_dc += Left[i]; } expected_dc = (expected_dc + 4) >> 3; for (r = 0; r < 4; r++) { for (c = 0; c < 4; c++) { predictor[c] = expected_dc; } predictor += 16; } } break; case B_TM_PRED: { // prediction similar to true_motion prediction for (r = 0; r < 4; r++) { for (c = 0; c < 4; c++) { int pred = Above[c] - top_left + Left[r]; if (pred < 0) pred = 0; if (pred > 255) pred = 255; predictor[c] = pred; } predictor += 16; } } break; case B_VE_PRED: { unsigned int ap[4]; ap[0] = (top_left + 2 * Above[0] + Above[1] + 2) >> 2; ap[1] = (Above[0] + 2 * Above[1] + Above[2] + 2) >> 2; ap[2] = (Above[1] + 2 * Above[2] + Above[3] + 2) >> 2; ap[3] = (Above[2] + 2 * Above[3] + Above[4] + 2) >> 2; for (r = 0; r < 4; r++) { for (c = 0; c < 4; c++) { predictor[c] = ap[c]; } predictor += 16; } } break; case B_HE_PRED: { unsigned int lp[4]; lp[0] = (top_left + 2 * Left[0] + Left[1] + 2) >> 2; lp[1] = (Left[0] + 2 * Left[1] + Left[2] + 2) >> 2; lp[2] = (Left[1] + 2 * Left[2] + Left[3] + 2) >> 2; lp[3] = (Left[2] + 2 * Left[3] + Left[3] + 2) >> 2; for (r = 0; r < 4; r++) { for (c = 0; c < 4; c++) { predictor[c] = lp[r]; } predictor += 16; } } break; case B_LD_PRED: { unsigned char *ptr = Above; predictor[0 * 16 + 0] = (ptr[0] + ptr[1] * 2 + ptr[2] + 2) >> 2; predictor[0 * 16 + 1] = predictor[1 * 16 + 0] = (ptr[1] + ptr[2] * 2 + ptr[3] + 2) >> 2; predictor[0 * 16 + 2] = predictor[1 * 16 + 1] = predictor[2 * 16 + 0] = (ptr[2] + ptr[3] * 2 + ptr[4] + 2) >> 2; predictor[0 * 16 + 3] = predictor[1 * 16 + 2] = predictor[2 * 16 + 1] = predictor[3 * 16 + 0] = (ptr[3] + ptr[4] * 2 + ptr[5] + 2) >> 2; predictor[1 * 16 + 3] = predictor[2 * 16 + 2] = predictor[3 * 16 + 1] = (ptr[4] + ptr[5] * 2 + ptr[6] + 2) >> 2; predictor[2 * 16 + 3] = predictor[3 * 16 + 2] = (ptr[5] + ptr[6] * 2 + ptr[7] + 2) >> 2; predictor[3 * 16 + 3] = (ptr[6] + ptr[7] * 2 + ptr[7] + 2) >> 2; } break; case B_RD_PRED: { unsigned char pp[9]; pp[0] = Left[3]; pp[1] = Left[2]; pp[2] = Left[1]; pp[3] = Left[0]; pp[4] = top_left; pp[5] = Above[0]; pp[6] = Above[1]; pp[7] = Above[2]; pp[8] = Above[3]; predictor[3 * 16 + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2; predictor[3 * 16 + 1] = predictor[2 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2; predictor[3 * 16 + 2] = predictor[2 * 16 + 1] = predictor[1 * 16 + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2; predictor[3 * 16 + 3] = predictor[2 * 16 + 2] = predictor[1 * 16 + 1] = predictor[0 * 16 + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2; predictor[2 * 16 + 3] = predictor[1 * 16 + 2] = predictor[0 * 16 + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2; predictor[1 * 16 + 3] = predictor[0 * 16 + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2; predictor[0 * 16 + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2; } break; case B_VR_PRED: { unsigned char pp[9]; pp[0] = Left[3]; pp[1] = Left[2]; pp[2] = Left[1]; pp[3] = Left[0]; pp[4] = top_left; pp[5] = Above[0]; pp[6] = Above[1]; pp[7] = Above[2]; pp[8] = Above[3]; predictor[3 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2; predictor[2 * 16 + 0] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2; predictor[3 * 16 + 1] = predictor[1 * 16 + 0] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2; predictor[2 * 16 + 1] = predictor[0 * 16 + 0] = (pp[4] + pp[5] + 1) >> 1; predictor[3 * 16 + 2] = predictor[1 * 16 + 1] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2; predictor[2 * 16 + 2] = predictor[0 * 16 + 1] = (pp[5] + pp[6] + 1) >> 1; predictor[3 * 16 + 3] = predictor[1 * 16 + 2] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2; predictor[2 * 16 + 3] = predictor[0 * 16 + 2] = (pp[6] + pp[7] + 1) >> 1; predictor[1 * 16 + 3] = (pp[6] + pp[7] * 2 + pp[8] + 2) >> 2; predictor[0 * 16 + 3] = (pp[7] + pp[8] + 1) >> 1; } break; case B_VL_PRED: { unsigned char *pp = Above; predictor[0 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1; predictor[1 * 16 + 0] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2; predictor[2 * 16 + 0] = predictor[0 * 16 + 1] = (pp[1] + pp[2] + 1) >> 1; predictor[1 * 16 + 1] = predictor[3 * 16 + 0] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2; predictor[2 * 16 + 1] = predictor[0 * 16 + 2] = (pp[2] + pp[3] + 1) >> 1; predictor[3 * 16 + 1] = predictor[1 * 16 + 2] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2; predictor[0 * 16 + 3] = predictor[2 * 16 + 2] = (pp[3] + pp[4] + 1) >> 1; predictor[1 * 16 + 3] = predictor[3 * 16 + 2] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2; predictor[2 * 16 + 3] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2; predictor[3 * 16 + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2; } break; case B_HD_PRED: { unsigned char pp[9]; pp[0] = Left[3]; pp[1] = Left[2]; pp[2] = Left[1]; pp[3] = Left[0]; pp[4] = top_left; pp[5] = Above[0]; pp[6] = Above[1]; pp[7] = Above[2]; pp[8] = Above[3]; predictor[3 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1; predictor[3 * 16 + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2; predictor[2 * 16 + 0] = predictor[3 * 16 + 2] = (pp[1] + pp[2] + 1) >> 1; predictor[2 * 16 + 1] = predictor[3 * 16 + 3] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2; predictor[2 * 16 + 2] = predictor[1 * 16 + 0] = (pp[2] + pp[3] + 1) >> 1; predictor[2 * 16 + 3] = predictor[1 * 16 + 1] = (pp[2] + pp[3] * 2 + pp[4] + 2) >> 2; predictor[1 * 16 + 2] = predictor[0 * 16 + 0] = (pp[3] + pp[4] + 1) >> 1; predictor[1 * 16 + 3] = predictor[0 * 16 + 1] = (pp[3] + pp[4] * 2 + pp[5] + 2) >> 2; predictor[0 * 16 + 2] = (pp[4] + pp[5] * 2 + pp[6] + 2) >> 2; predictor[0 * 16 + 3] = (pp[5] + pp[6] * 2 + pp[7] + 2) >> 2; } break; case B_HU_PRED: { unsigned char *pp = Left; predictor[0 * 16 + 0] = (pp[0] + pp[1] + 1) >> 1; predictor[0 * 16 + 1] = (pp[0] + pp[1] * 2 + pp[2] + 2) >> 2; predictor[0 * 16 + 2] = predictor[1 * 16 + 0] = (pp[1] + pp[2] + 1) >> 1; predictor[0 * 16 + 3] = predictor[1 * 16 + 1] = (pp[1] + pp[2] * 2 + pp[3] + 2) >> 2; predictor[1 * 16 + 2] = predictor[2 * 16 + 0] = (pp[2] + pp[3] + 1) >> 1; predictor[1 * 16 + 3] = predictor[2 * 16 + 1] = (pp[2] + pp[3] * 2 + pp[3] + 2) >> 2; predictor[2 * 16 + 2] = predictor[2 * 16 + 3] = predictor[3 * 16 + 0] = predictor[3 * 16 + 1] = predictor[3 * 16 + 2] = predictor[3 * 16 + 3] = pp[3]; } break; } } // copy 4 bytes from the above right down so that the 4x4 prediction modes using pixels above and // to the right prediction have filled in pixels to use. void vp8_intra_prediction_down_copy(MACROBLOCKD *x) { unsigned char *above_right = *(x->block[0].base_dst) + x->block[0].dst - x->block[0].dst_stride + 16; unsigned int *src_ptr = (unsigned int *)above_right; unsigned int *dst_ptr0 = (unsigned int *)(above_right + 4 * x->block[0].dst_stride); unsigned int *dst_ptr1 = (unsigned int *)(above_right + 8 * x->block[0].dst_stride); unsigned int *dst_ptr2 = (unsigned int *)(above_right + 12 * x->block[0].dst_stride); *dst_ptr0 = *src_ptr; *dst_ptr1 = *src_ptr; *dst_ptr2 = *src_ptr; } /* void vp8_recon_intra4x4mb(const vp8_recon_rtcd_vtable_t *rtcd, MACROBLOCKD *x) { int i; vp8_intra_prediction_down_copy(x); for(i=0;i<16;i++) { BLOCKD *b = &x->block[i]; vp8_predict_intra4x4(b, x->block[i].bmi.mode,x->block[i].predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); } vp8_recon_intra_mbuv(x); } */ void vp8_recon_intra4x4mb(const vp8_recon_rtcd_vtable_t *rtcd, MACROBLOCKD *x) { int i; BLOCKD *b = &x->block[0]; vp8_intra_prediction_down_copy(x); { vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); b += 1; vp8_predict_intra4x4(b, b->bmi.mode, b->predictor); RECON_INVOKE(rtcd, recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride); } vp8_recon_intra_mbuv(rtcd, x); }