389 строки
14 KiB
C
389 строки
14 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <string.h>
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#include <math.h>
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#include "./aom_scale_rtcd.h"
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#include "aom/aom_integer.h"
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#include "av1/common/dering.h"
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#include "av1/common/onyxc_int.h"
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#include "av1/common/reconinter.h"
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#include "av1/common/od_dering.h"
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int compute_level_from_index(int global_level, int gi) {
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static const int dering_gains[DERING_REFINEMENT_LEVELS] = { 0, 11, 16, 22 };
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int level;
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if (global_level == 0) return 0;
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level = (global_level * dering_gains[gi] + 8) >> 4;
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return clamp(level, gi, MAX_DERING_LEVEL - 1);
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}
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int sb_all_skip(const AV1_COMMON *const cm, int mi_row, int mi_col) {
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int r, c;
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int maxc, maxr;
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int skip = 1;
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maxc = cm->mi_cols - mi_col;
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maxr = cm->mi_rows - mi_row;
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#if CONFIG_EXT_PARTITION
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if (maxr > cm->mib_size_log2) maxr = cm->mib_size_log2;
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if (maxc > cm->mib_size_log2) maxc = cm->mib_size_log2;
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#else
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if (maxr > MAX_MIB_SIZE) maxr = MAX_MIB_SIZE;
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if (maxc > MAX_MIB_SIZE) maxc = MAX_MIB_SIZE;
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#endif
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for (r = 0; r < maxr; r++) {
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for (c = 0; c < maxc; c++) {
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skip = skip &&
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cm->mi_grid_visible[(mi_row + r) * cm->mi_stride + mi_col + c]
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->mbmi.skip;
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}
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}
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return skip;
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}
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int sb_compute_dering_list(const AV1_COMMON *const cm, int mi_row, int mi_col,
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dering_list *dlist) {
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int r, c;
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int maxc, maxr;
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MODE_INFO **grid;
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int count = 0;
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grid = cm->mi_grid_visible;
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maxc = cm->mi_cols - mi_col;
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maxr = cm->mi_rows - mi_row;
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#if CONFIG_EXT_PARTITION
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if (maxr > cm->mib_size_log2) maxr = cm->mib_size_log2;
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if (maxc > cm->mib_size_log2) maxc = cm->mib_size_log2;
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#else
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if (maxr > MAX_MIB_SIZE) maxr = MAX_MIB_SIZE;
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if (maxc > MAX_MIB_SIZE) maxc = MAX_MIB_SIZE;
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#endif
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for (r = 0; r < maxr; r++) {
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MODE_INFO **grid_row;
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grid_row = &grid[(mi_row + r) * cm->mi_stride + mi_col];
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for (c = 0; c < maxc; c++) {
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if (!grid_row[c]->mbmi.skip) {
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dlist[count].by = r;
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dlist[count].bx = c;
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count++;
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}
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}
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}
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return count;
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}
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static INLINE void copy_8x8_16bit_to_8bit(uint8_t *dst, int dstride,
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int16_t *src, int sstride) {
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int i, j;
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for (i = 0; i < 8; i++)
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for (j = 0; j < 8; j++)
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dst[i * dstride + j] = (uint8_t)src[i * sstride + j];
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}
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static INLINE void copy_4x4_16bit_to_8bit(uint8_t *dst, int dstride,
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int16_t *src, int sstride) {
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int i, j;
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for (i = 0; i < 4; i++)
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for (j = 0; j < 4; j++)
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dst[i * dstride + j] = (uint8_t)src[i * sstride + j];
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}
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/* TODO: Optimize this function for SSE. */
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void copy_dering_16bit_to_8bit(uint8_t *dst, int dstride, int16_t *src,
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dering_list *dlist, int dering_count,
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int bsize) {
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int bi, bx, by;
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if (bsize == 3) {
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for (bi = 0; bi < dering_count; bi++) {
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by = dlist[bi].by;
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bx = dlist[bi].bx;
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copy_8x8_16bit_to_8bit(&dst[(by << 3) * dstride + (bx << 3)], dstride,
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&src[bi << 2 * bsize], 1 << bsize);
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}
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} else {
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for (bi = 0; bi < dering_count; bi++) {
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by = dlist[bi].by;
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bx = dlist[bi].bx;
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copy_4x4_16bit_to_8bit(&dst[(by << 2) * dstride + (bx << 2)], dstride,
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&src[bi << 2 * bsize], 1 << bsize);
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}
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}
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}
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/* TODO: Optimize this function for SSE. */
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static void copy_sb8_16(AV1_COMMON *cm, int16_t *dst, int dstride,
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const uint8_t *src, int src_voffset, int src_hoffset,
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int sstride, int vsize, int hsize) {
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int r, c;
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(void)cm;
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#if CONFIG_AOM_HIGHBITDEPTH
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if (cm->use_highbitdepth) {
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const uint16_t *base =
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&CONVERT_TO_SHORTPTR(src)[src_voffset * sstride + src_hoffset];
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for (r = 0; r < vsize; r++) {
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for (c = 0; c < hsize; c++) {
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dst[r * dstride + c] = base[r * sstride + c];
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}
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}
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} else
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#endif
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{
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const uint8_t *base = &src[src_voffset * sstride + src_hoffset];
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for (r = 0; r < vsize; r++) {
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for (c = 0; c < hsize; c++) {
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dst[r * dstride + c] = base[r * sstride + c];
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}
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}
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}
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}
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void av1_dering_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm,
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MACROBLOCKD *xd, int global_level) {
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int r, c;
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int sbr, sbc;
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int nhsb, nvsb;
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int16_t src[OD_DERING_INBUF_SIZE];
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int16_t *linebuf[3];
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int16_t colbuf[3][OD_BSIZE_MAX + 2 * OD_FILT_VBORDER][OD_FILT_HBORDER];
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dering_list dlist[MAX_MIB_SIZE * MAX_MIB_SIZE];
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unsigned char *row_dering, *prev_row_dering, *curr_row_dering;
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int dering_count;
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int dir[OD_DERING_NBLOCKS][OD_DERING_NBLOCKS] = { { 0 } };
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int stride;
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int bsize[3];
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int dec[3];
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int pli;
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int dering_left;
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int coeff_shift = AOMMAX(cm->bit_depth - 8, 0);
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int nplanes;
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if (xd->plane[1].subsampling_x == xd->plane[1].subsampling_y &&
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xd->plane[2].subsampling_x == xd->plane[2].subsampling_y)
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nplanes = 3;
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else
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nplanes = 1;
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nvsb = (cm->mi_rows + MAX_MIB_SIZE - 1) / MAX_MIB_SIZE;
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nhsb = (cm->mi_cols + MAX_MIB_SIZE - 1) / MAX_MIB_SIZE;
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av1_setup_dst_planes(xd->plane, frame, 0, 0);
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row_dering = aom_malloc(sizeof(*row_dering) * nhsb * 2);
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memset(row_dering, 1, sizeof(*row_dering) * (nhsb + 2) * 2);
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prev_row_dering = row_dering + 1;
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curr_row_dering = prev_row_dering + nhsb + 2;
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for (pli = 0; pli < nplanes; pli++) {
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dec[pli] = xd->plane[pli].subsampling_x;
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bsize[pli] = OD_DERING_SIZE_LOG2 - dec[pli];
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}
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stride = (cm->mi_cols << bsize[0]) + 2 * OD_FILT_HBORDER;
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for (pli = 0; pli < nplanes; pli++) {
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linebuf[pli] = aom_malloc(sizeof(*linebuf) * OD_FILT_VBORDER * stride);
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}
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for (sbr = 0; sbr < nvsb; sbr++) {
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for (pli = 0; pli < nplanes; pli++) {
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for (r = 0; r < (MAX_MIB_SIZE << bsize[pli]) + 2 * OD_FILT_VBORDER; r++) {
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for (c = 0; c < OD_FILT_HBORDER; c++) {
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colbuf[pli][r][c] = OD_DERING_VERY_LARGE;
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}
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}
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}
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dering_left = 1;
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for (sbc = 0; sbc < nhsb; sbc++) {
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int level;
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int nhb, nvb;
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int cstart = 0;
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if (!dering_left) cstart = -OD_FILT_HBORDER;
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nhb = AOMMIN(MAX_MIB_SIZE, cm->mi_cols - MAX_MIB_SIZE * sbc);
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nvb = AOMMIN(MAX_MIB_SIZE, cm->mi_rows - MAX_MIB_SIZE * sbr);
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level = compute_level_from_index(
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global_level, cm->mi_grid_visible[MAX_MIB_SIZE * sbr * cm->mi_stride +
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MAX_MIB_SIZE * sbc]
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->mbmi.dering_gain);
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curr_row_dering[sbc] = 0;
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if (level == 0 ||
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(dering_count = sb_compute_dering_list(
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cm, sbr * MAX_MIB_SIZE, sbc * MAX_MIB_SIZE, dlist)) == 0) {
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dering_left = 0;
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continue;
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}
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curr_row_dering[sbc] = 1;
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for (pli = 0; pli < nplanes; pli++) {
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int16_t dst[OD_BSIZE_MAX * OD_BSIZE_MAX];
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int threshold;
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int coffset;
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int rend, cend;
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if (sbc == nhsb - 1)
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cend = (nhb << bsize[pli]);
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else
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cend = (nhb << bsize[pli]) + OD_FILT_HBORDER;
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if (sbr == nvsb - 1)
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rend = (nvb << bsize[pli]);
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else
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rend = (nvb << bsize[pli]) + OD_FILT_VBORDER;
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coffset = sbc * MAX_MIB_SIZE << bsize[pli];
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if (sbc == nhsb - 1) {
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/* On the last superblock column, fill in the right border with
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OD_DERING_VERY_LARGE to avoid filtering with the outside. */
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for (r = 0; r < rend + OD_FILT_VBORDER; r++) {
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for (c = cend; c < (nhb << bsize[pli]) + OD_FILT_HBORDER; ++c) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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OD_DERING_VERY_LARGE;
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}
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}
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}
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if (sbr == nvsb - 1) {
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/* On the last superblock row, fill in the bottom border with
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OD_DERING_VERY_LARGE to avoid filtering with the outside. */
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for (r = rend; r < rend + OD_FILT_VBORDER; r++) {
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for (c = 0; c < (nhb << bsize[pli]) + 2 * OD_FILT_HBORDER; c++) {
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src[(r + OD_FILT_VBORDER) * OD_FILT_BSTRIDE + c] =
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OD_DERING_VERY_LARGE;
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}
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}
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}
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/* Copy in the pixels we need from the current superblock for
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deringing.*/
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copy_sb8_16(
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cm,
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&src[OD_FILT_VBORDER * OD_FILT_BSTRIDE + OD_FILT_HBORDER + cstart],
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OD_FILT_BSTRIDE, xd->plane[pli].dst.buf,
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(MAX_MIB_SIZE << bsize[pli]) * sbr, coffset + cstart,
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xd->plane[pli].dst.stride, rend, cend - cstart);
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if (!prev_row_dering[sbc]) {
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copy_sb8_16(cm, &src[OD_FILT_HBORDER], OD_FILT_BSTRIDE,
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xd->plane[pli].dst.buf,
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(MAX_MIB_SIZE << bsize[pli]) * sbr - OD_FILT_VBORDER,
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coffset, xd->plane[pli].dst.stride, OD_FILT_VBORDER,
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nhb << bsize[pli]);
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} else if (sbr > 0) {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = 0; c < nhb << bsize[pli]; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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linebuf[pli][r * stride + coffset + c];
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}
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}
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} else {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = 0; c < nhb << bsize[pli]; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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OD_DERING_VERY_LARGE;
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}
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}
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}
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if (!prev_row_dering[sbc - 1]) {
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copy_sb8_16(cm, src, OD_FILT_BSTRIDE, xd->plane[pli].dst.buf,
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(MAX_MIB_SIZE << bsize[pli]) * sbr - OD_FILT_VBORDER,
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coffset - OD_FILT_HBORDER, xd->plane[pli].dst.stride,
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OD_FILT_VBORDER, OD_FILT_HBORDER);
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} else if (sbr > 0 && sbc > 0) {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = -OD_FILT_HBORDER; c < 0; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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linebuf[pli][r * stride + coffset + c];
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}
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}
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} else {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = -OD_FILT_HBORDER; c < 0; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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OD_DERING_VERY_LARGE;
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}
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}
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}
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if (!prev_row_dering[sbc + 1]) {
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copy_sb8_16(cm, &src[OD_FILT_HBORDER + (nhb << bsize[pli])],
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OD_FILT_BSTRIDE, xd->plane[pli].dst.buf,
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(MAX_MIB_SIZE << bsize[pli]) * sbr - OD_FILT_VBORDER,
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coffset + (nhb << bsize[pli]), xd->plane[pli].dst.stride,
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OD_FILT_VBORDER, OD_FILT_HBORDER);
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} else if (sbr > 0 && sbc < nhsb - 1) {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = nhb << bsize[pli];
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c < (nhb << bsize[pli]) + OD_FILT_HBORDER; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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linebuf[pli][r * stride + coffset + c];
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}
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}
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} else {
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for (r = 0; r < OD_FILT_VBORDER; r++) {
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for (c = nhb << bsize[pli];
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c < (nhb << bsize[pli]) + OD_FILT_HBORDER; c++) {
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src[r * OD_FILT_BSTRIDE + c + OD_FILT_HBORDER] =
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OD_DERING_VERY_LARGE;
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}
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}
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}
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if (dering_left) {
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/* If we deringed the superblock on the left then we need to copy in
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saved pixels. */
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for (r = 0; r < rend + OD_FILT_VBORDER; r++) {
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for (c = 0; c < OD_FILT_HBORDER; c++) {
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src[r * OD_FILT_BSTRIDE + c] = colbuf[pli][r][c];
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}
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}
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}
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for (r = 0; r < rend + OD_FILT_VBORDER; r++) {
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for (c = 0; c < OD_FILT_HBORDER; c++) {
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/* Saving pixels in case we need to dering the superblock on the
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right. */
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colbuf[pli][r][c] =
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src[r * OD_FILT_BSTRIDE + c + (nhb << bsize[pli])];
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}
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}
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copy_sb8_16(cm, &linebuf[pli][coffset], stride, xd->plane[pli].dst.buf,
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(MAX_MIB_SIZE << bsize[pli]) * (sbr + 1) - OD_FILT_VBORDER,
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coffset, xd->plane[pli].dst.stride, OD_FILT_VBORDER,
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(nhb << bsize[pli]));
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/* FIXME: This is a temporary hack that uses more conservative
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deringing for chroma. */
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if (pli)
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threshold = (level * 5 + 4) >> 3 << coeff_shift;
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else
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threshold = level << coeff_shift;
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if (threshold == 0) continue;
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od_dering(
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dst, &src[OD_FILT_VBORDER * OD_FILT_BSTRIDE + OD_FILT_HBORDER],
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dec[pli], dir, pli, dlist, dering_count, threshold, coeff_shift);
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#if CONFIG_AOM_HIGHBITDEPTH
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if (cm->use_highbitdepth) {
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copy_dering_16bit_to_16bit(
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(int16_t *)&CONVERT_TO_SHORTPTR(
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xd->plane[pli]
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.dst.buf)[xd->plane[pli].dst.stride *
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(MAX_MIB_SIZE * sbr << bsize[pli]) +
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(sbc * MAX_MIB_SIZE << bsize[pli])],
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xd->plane[pli].dst.stride, dst, dlist, dering_count,
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3 - dec[pli]);
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} else {
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#endif
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copy_dering_16bit_to_8bit(
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&xd->plane[pli].dst.buf[xd->plane[pli].dst.stride *
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(MAX_MIB_SIZE * sbr << bsize[pli]) +
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(sbc * MAX_MIB_SIZE << bsize[pli])],
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xd->plane[pli].dst.stride, dst, dlist, dering_count, bsize[pli]);
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#if CONFIG_AOM_HIGHBITDEPTH
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}
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#endif
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}
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dering_left = 1;
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}
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{
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unsigned char *tmp;
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tmp = prev_row_dering;
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prev_row_dering = curr_row_dering;
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curr_row_dering = tmp;
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}
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}
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aom_free(row_dering);
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for (pli = 0; pli < nplanes; pli++) {
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aom_free(linebuf[pli]);
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}
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}
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