125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "vp9/common/vp9_blockd.h"
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typedef enum {
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PRED = 0,
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DEST = 1
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} BLOCKSET;
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static void setup_block
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(
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BLOCKD *b,
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int mv_stride,
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unsigned char **base,
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unsigned char **base2,
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int Stride,
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int offset,
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BLOCKSET bs
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) {
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if (bs == DEST) {
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b->dst_stride = Stride;
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b->dst = offset;
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b->base_dst = base;
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} else {
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b->pre_stride = Stride;
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b->pre = offset;
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b->base_pre = base;
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b->base_second_pre = base2;
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}
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}
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static void setup_macroblock(MACROBLOCKD *xd, BLOCKSET bs) {
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int block;
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unsigned char **y, **u, **v;
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unsigned char **y2, **u2, **v2;
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BLOCKD *blockd = xd->block;
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int stride;
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if (bs == DEST) {
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y = &xd->dst.y_buffer;
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u = &xd->dst.u_buffer;
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v = &xd->dst.v_buffer;
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} else {
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y = &xd->pre.y_buffer;
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u = &xd->pre.u_buffer;
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v = &xd->pre.v_buffer;
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y2 = &xd->second_pre.y_buffer;
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u2 = &xd->second_pre.u_buffer;
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v2 = &xd->second_pre.v_buffer;
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}
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stride = xd->dst.y_stride;
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for (block = 0; block < 16; block++) { /* y blocks */
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setup_block(&blockd[block], stride, y, y2, stride,
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(block >> 2) * 4 * stride + (block & 3) * 4, bs);
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}
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stride = xd->dst.uv_stride;
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for (block = 16; block < 20; block++) { /* U and V blocks */
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setup_block(&blockd[block], stride, u, u2, stride,
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((block - 16) >> 1) * 4 * stride + (block & 1) * 4, bs);
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setup_block(&blockd[block + 4], stride, v, v2, stride,
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((block - 16) >> 1) * 4 * stride + (block & 1) * 4, bs);
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}
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}
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void vp9_setup_block_dptrs(MACROBLOCKD *xd) {
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int r, c;
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BLOCKD *blockd = xd->block;
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for (r = 0; r < 4; r++) {
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for (c = 0; c < 4; c++) {
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blockd[r * 4 + c].diff = &xd->diff[r * 4 * 16 + c * 4];
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blockd[r * 4 + c].predictor = xd->predictor + r * 4 * 16 + c * 4;
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}
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}
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for (r = 0; r < 2; r++) {
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for (c = 0; c < 2; c++) {
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blockd[16 + r * 2 + c].diff = &xd->diff[256 + r * 4 * 8 + c * 4];
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blockd[16 + r * 2 + c].predictor =
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xd->predictor + 256 + r * 4 * 8 + c * 4;
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}
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}
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for (r = 0; r < 2; r++) {
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for (c = 0; c < 2; c++) {
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blockd[20 + r * 2 + c].diff = &xd->diff[320 + r * 4 * 8 + c * 4];
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blockd[20 + r * 2 + c].predictor =
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xd->predictor + 320 + r * 4 * 8 + c * 4;
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}
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}
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blockd[24].diff = &xd->diff[384];
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for (r = 0; r < 25; r++) {
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blockd[r].qcoeff = xd->qcoeff + r * 16;
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blockd[r].dqcoeff = xd->dqcoeff + r * 16;
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}
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}
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void vp9_build_block_doffsets(MACROBLOCKD *xd) {
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/* handle the destination pitch features */
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setup_macroblock(xd, DEST);
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setup_macroblock(xd, PRED);
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}
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