235 строки
8.3 KiB
C
235 строки
8.3 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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#ifndef AV1_COMMON_RESTORATION_H_
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#define AV1_COMMON_RESTORATION_H_
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#include "aom_ports/mem.h"
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#include "./aom_config.h"
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#include "av1/common/blockd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CLIP(x, lo, hi) ((x) < (lo) ? (lo) : (x) > (hi) ? (hi) : (x))
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#define RINT(x) ((x) < 0 ? (int)((x)-0.5) : (int)((x) + 0.5))
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#define RESTORATION_TILESIZE_MAX 256
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#define RESTORATION_TILEPELS_MAX \
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(RESTORATION_TILESIZE_MAX * RESTORATION_TILESIZE_MAX * 9 / 4)
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// 4 32-bit buffers needed for the filter:
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// 2 for the restored versions of the frame and
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// 2 for each restoration operation
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#define SGRPROJ_OUTBUF_SIZE \
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((RESTORATION_TILESIZE_MAX * 3 / 2) * (RESTORATION_TILESIZE_MAX * 3 / 2 + 16))
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#define SGRPROJ_TMPBUF_SIZE \
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(RESTORATION_TILEPELS_MAX * 2 * sizeof(int32_t) + \
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SGRPROJ_OUTBUF_SIZE * 2 * sizeof(int32_t))
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#define SGRPROJ_EXTBUF_SIZE (0)
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#define SGRPROJ_PARAMS_BITS 4
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#define SGRPROJ_PARAMS (1 << SGRPROJ_PARAMS_BITS)
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#define USE_HIGHPASS_IN_SGRPROJ 0
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// Precision bits for projection
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#define SGRPROJ_PRJ_BITS 7
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// Restoration precision bits generated higher than source before projection
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#define SGRPROJ_RST_BITS 4
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// Internal precision bits for core selfguided_restoration
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#define SGRPROJ_SGR_BITS 8
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#define SGRPROJ_SGR (1 << SGRPROJ_SGR_BITS)
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#if USE_HIGHPASS_IN_SGRPROJ
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#define SGRPROJ_PRJ_MIN0 (-(1 << SGRPROJ_PRJ_BITS) / 8)
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#define SGRPROJ_PRJ_MAX0 (SGRPROJ_PRJ_MIN0 + (1 << SGRPROJ_PRJ_BITS) - 1)
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#define SGRPROJ_PRJ_MIN1 (-(1 << SGRPROJ_PRJ_BITS) / 2)
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#define SGRPROJ_PRJ_MAX1 (SGRPROJ_PRJ_MIN1 + (1 << SGRPROJ_PRJ_BITS) - 1)
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#else
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#define SGRPROJ_PRJ_MIN0 (-(1 << SGRPROJ_PRJ_BITS) * 3 / 4)
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#define SGRPROJ_PRJ_MAX0 (SGRPROJ_PRJ_MIN0 + (1 << SGRPROJ_PRJ_BITS) - 1)
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#define SGRPROJ_PRJ_MIN1 (-(1 << SGRPROJ_PRJ_BITS) / 4)
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#define SGRPROJ_PRJ_MAX1 (SGRPROJ_PRJ_MIN1 + (1 << SGRPROJ_PRJ_BITS) - 1)
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#endif // USE_HIGHPASS_IN_SGRPROJ
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#define SGRPROJ_BITS (SGRPROJ_PRJ_BITS * 2 + SGRPROJ_PARAMS_BITS)
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#define MAX_RADIUS 3 // Only 1, 2, 3 allowed
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#define MAX_EPS 80 // Max value of eps
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#define MAX_NELEM ((2 * MAX_RADIUS + 1) * (2 * MAX_RADIUS + 1))
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#define SGRPROJ_MTABLE_BITS 20
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#define SGRPROJ_RECIP_BITS 12
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#define WIENER_HALFWIN 3
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#define WIENER_HALFWIN1 (WIENER_HALFWIN + 1)
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#define WIENER_WIN (2 * WIENER_HALFWIN + 1)
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#define WIENER_WIN2 ((WIENER_WIN) * (WIENER_WIN))
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#define WIENER_TMPBUF_SIZE (0)
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#define WIENER_EXTBUF_SIZE (0)
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#define WIENER_FILT_PREC_BITS 7
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#define WIENER_FILT_STEP (1 << WIENER_FILT_PREC_BITS)
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// Central values for the taps
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#define WIENER_FILT_TAP0_MIDV (3)
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#define WIENER_FILT_TAP1_MIDV (-7)
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#define WIENER_FILT_TAP2_MIDV (15)
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#define WIENER_FILT_TAP0_BITS 4
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#define WIENER_FILT_TAP1_BITS 5
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#define WIENER_FILT_TAP2_BITS 6
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#define WIENER_FILT_BITS \
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((WIENER_FILT_TAP0_BITS + WIENER_FILT_TAP1_BITS + WIENER_FILT_TAP2_BITS) * 2)
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#define WIENER_FILT_TAP0_MINV \
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(WIENER_FILT_TAP0_MIDV - (1 << WIENER_FILT_TAP0_BITS) / 2)
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#define WIENER_FILT_TAP1_MINV \
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(WIENER_FILT_TAP1_MIDV - (1 << WIENER_FILT_TAP1_BITS) / 2)
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#define WIENER_FILT_TAP2_MINV \
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(WIENER_FILT_TAP2_MIDV - (1 << WIENER_FILT_TAP2_BITS) / 2)
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#define WIENER_FILT_TAP0_MAXV \
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(WIENER_FILT_TAP0_MIDV - 1 + (1 << WIENER_FILT_TAP0_BITS) / 2)
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#define WIENER_FILT_TAP1_MAXV \
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(WIENER_FILT_TAP1_MIDV - 1 + (1 << WIENER_FILT_TAP1_BITS) / 2)
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#define WIENER_FILT_TAP2_MAXV \
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(WIENER_FILT_TAP2_MIDV - 1 + (1 << WIENER_FILT_TAP2_BITS) / 2)
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// Max of SGRPROJ_TMPBUF_SIZE, DOMAINTXFMRF_TMPBUF_SIZE, WIENER_TMPBUF_SIZE
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#define RESTORATION_TMPBUF_SIZE (SGRPROJ_TMPBUF_SIZE)
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// Max of SGRPROJ_EXTBUF_SIZE, WIENER_EXTBUF_SIZE
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#define RESTORATION_EXTBUF_SIZE (WIENER_EXTBUF_SIZE)
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// Check the assumptions of the existing code
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#if SUBPEL_TAPS != WIENER_WIN + 1
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#error "Wiener filter currently only works if SUBPEL_TAPS == WIENER_WIN + 1"
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#endif
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#if WIENER_FILT_PREC_BITS != 7
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#error "Wiener filter currently only works if WIENER_FILT_PREC_BITS == 7"
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#endif
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typedef struct {
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DECLARE_ALIGNED(16, InterpKernel, vfilter);
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DECLARE_ALIGNED(16, InterpKernel, hfilter);
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} WienerInfo;
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typedef struct {
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#if USE_HIGHPASS_IN_SGRPROJ
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int corner;
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int edge;
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#else
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int r1;
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int e1;
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#endif // USE_HIGHPASS_IN_SGRPROJ
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int r2;
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int e2;
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} sgr_params_type;
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typedef struct {
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int ep;
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int xqd[2];
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} SgrprojInfo;
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typedef struct {
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int restoration_tilesize;
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RestorationType frame_restoration_type;
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RestorationType *restoration_type;
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// Wiener filter
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WienerInfo *wiener_info;
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// Selfguided proj filter
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SgrprojInfo *sgrproj_info;
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} RestorationInfo;
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typedef struct {
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RestorationInfo *rsi;
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int keyframe;
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int ntiles;
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int tile_width, tile_height;
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int nhtiles, nvtiles;
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int32_t *tmpbuf;
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} RestorationInternal;
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static INLINE int av1_get_rest_ntiles(int width, int height, int tilesize,
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int *tile_width, int *tile_height,
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int *nhtiles, int *nvtiles) {
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int nhtiles_, nvtiles_;
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int tile_width_, tile_height_;
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tile_width_ = (tilesize < 0) ? width : AOMMIN(tilesize, width);
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tile_height_ = (tilesize < 0) ? height : AOMMIN(tilesize, height);
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nhtiles_ = (width + (tile_width_ >> 1)) / tile_width_;
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nvtiles_ = (height + (tile_height_ >> 1)) / tile_height_;
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if (tile_width) *tile_width = tile_width_;
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if (tile_height) *tile_height = tile_height_;
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if (nhtiles) *nhtiles = nhtiles_;
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if (nvtiles) *nvtiles = nvtiles_;
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return (nhtiles_ * nvtiles_);
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}
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static INLINE void av1_get_rest_tile_limits(
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int tile_idx, int subtile_idx, int subtile_bits, int nhtiles, int nvtiles,
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int tile_width, int tile_height, int im_width, int im_height, int clamp_h,
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int clamp_v, int *h_start, int *h_end, int *v_start, int *v_end) {
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const int htile_idx = tile_idx % nhtiles;
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const int vtile_idx = tile_idx / nhtiles;
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*h_start = htile_idx * tile_width;
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*v_start = vtile_idx * tile_height;
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*h_end = (htile_idx < nhtiles - 1) ? *h_start + tile_width : im_width;
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*v_end = (vtile_idx < nvtiles - 1) ? *v_start + tile_height : im_height;
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if (subtile_bits) {
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const int num_subtiles_1d = (1 << subtile_bits);
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const int subtile_width = (*h_end - *h_start) >> subtile_bits;
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const int subtile_height = (*v_end - *v_start) >> subtile_bits;
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const int subtile_idx_h = subtile_idx & (num_subtiles_1d - 1);
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const int subtile_idx_v = subtile_idx >> subtile_bits;
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*h_start += subtile_idx_h * subtile_width;
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*v_start += subtile_idx_v * subtile_height;
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*h_end = subtile_idx_h == num_subtiles_1d - 1 ? *h_end
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: *h_start + subtile_width;
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*v_end = subtile_idx_v == num_subtiles_1d - 1 ? *v_end
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: *v_start + subtile_height;
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}
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if (clamp_h) {
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*h_start = AOMMAX(*h_start, clamp_h);
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*h_end = AOMMIN(*h_end, im_width - clamp_h);
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}
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if (clamp_v) {
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*v_start = AOMMAX(*v_start, clamp_v);
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*v_end = AOMMIN(*v_end, im_height - clamp_v);
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}
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}
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extern const sgr_params_type sgr_params[SGRPROJ_PARAMS];
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extern int sgrproj_mtable[MAX_EPS][MAX_NELEM];
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extern const int32_t x_by_xplus1[256];
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extern const int32_t one_by_x[MAX_NELEM];
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int av1_alloc_restoration_struct(struct AV1Common *cm,
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RestorationInfo *rst_info, int width,
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int height);
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void av1_free_restoration_struct(RestorationInfo *rst_info);
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void extend_frame(uint8_t *data, int width, int height, int stride);
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#if CONFIG_HIGHBITDEPTH
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void extend_frame_highbd(uint16_t *data, int width, int height, int stride);
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#endif // CONFIG_HIGHBITDEPTH
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void decode_xq(int *xqd, int *xq);
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void av1_loop_restoration_frame(YV12_BUFFER_CONFIG *frame, struct AV1Common *cm,
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RestorationInfo *rsi, int components_pattern,
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int partial_frame, YV12_BUFFER_CONFIG *dst);
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void av1_loop_restoration_precal();
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_COMMON_RESTORATION_H_
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