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Diffstat (limited to '')
| -rw-r--r-- | third_party/aom/av1/encoder/mcomp.c | 2885 |
1 files changed, 2885 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/mcomp.c b/third_party/aom/av1/encoder/mcomp.c new file mode 100644 index 0000000000..8f6de9b532 --- /dev/null +++ b/third_party/aom/av1/encoder/mcomp.c @@ -0,0 +1,2885 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <limits.h> +#include <math.h> +#include <stdio.h> + +#include "config/aom_config.h" +#include "config/aom_dsp_rtcd.h" + +#include "aom_dsp/aom_dsp_common.h" +#include "aom_mem/aom_mem.h" +#include "aom_ports/mem.h" + +#include "av1/common/common.h" +#include "av1/common/mvref_common.h" +#include "av1/common/onyxc_int.h" +#include "av1/common/reconinter.h" + +#include "av1/encoder/encoder.h" +#include "av1/encoder/encodemv.h" +#include "av1/encoder/mcomp.h" +#include "av1/encoder/rdopt.h" +#include "av1/encoder/reconinter_enc.h" + +// #define NEW_DIAMOND_SEARCH + +static INLINE const uint8_t *get_buf_from_mv(const struct buf_2d *buf, + const MV *mv) { + return &buf->buf[mv->row * buf->stride + mv->col]; +} + +void av1_set_mv_search_range(MvLimits *mv_limits, const MV *mv) { + int col_min = (mv->col >> 3) - MAX_FULL_PEL_VAL + (mv->col & 7 ? 1 : 0); + int row_min = (mv->row >> 3) - MAX_FULL_PEL_VAL + (mv->row & 7 ? 1 : 0); + int col_max = (mv->col >> 3) + MAX_FULL_PEL_VAL; + int row_max = (mv->row >> 3) + MAX_FULL_PEL_VAL; + + col_min = AOMMAX(col_min, (MV_LOW >> 3) + 1); + row_min = AOMMAX(row_min, (MV_LOW >> 3) + 1); + col_max = AOMMIN(col_max, (MV_UPP >> 3) - 1); + row_max = AOMMIN(row_max, (MV_UPP >> 3) - 1); + + // Get intersection of UMV window and valid MV window to reduce # of checks + // in diamond search. + if (mv_limits->col_min < col_min) mv_limits->col_min = col_min; + if (mv_limits->col_max > col_max) mv_limits->col_max = col_max; + if (mv_limits->row_min < row_min) mv_limits->row_min = row_min; + if (mv_limits->row_max > row_max) mv_limits->row_max = row_max; +} + +static void set_subpel_mv_search_range(const MvLimits *mv_limits, int *col_min, + int *col_max, int *row_min, int *row_max, + const MV *ref_mv) { + const int max_mv = MAX_FULL_PEL_VAL * 8; + const int minc = AOMMAX(mv_limits->col_min * 8, ref_mv->col - max_mv); + const int maxc = AOMMIN(mv_limits->col_max * 8, ref_mv->col + max_mv); + const int minr = AOMMAX(mv_limits->row_min * 8, ref_mv->row - max_mv); + const int maxr = AOMMIN(mv_limits->row_max * 8, ref_mv->row + max_mv); + + *col_min = AOMMAX(MV_LOW + 1, minc); + *col_max = AOMMIN(MV_UPP - 1, maxc); + *row_min = AOMMAX(MV_LOW + 1, minr); + *row_max = AOMMIN(MV_UPP - 1, maxr); +} + +int av1_init_search_range(int size) { + int sr = 0; + // Minimum search size no matter what the passed in value. + size = AOMMAX(16, size); + + while ((size << sr) < MAX_FULL_PEL_VAL) sr++; + + sr = AOMMIN(sr, MAX_MVSEARCH_STEPS - 2); + return sr; +} + +static INLINE int mv_cost(const MV *mv, const int *joint_cost, + int *const comp_cost[2]) { + return joint_cost[av1_get_mv_joint(mv)] + comp_cost[0][mv->row] + + comp_cost[1][mv->col]; +} + +int av1_mv_bit_cost(const MV *mv, const MV *ref, const int *mvjcost, + int *mvcost[2], int weight) { + const MV diff = { mv->row - ref->row, mv->col - ref->col }; + return ROUND_POWER_OF_TWO(mv_cost(&diff, mvjcost, mvcost) * weight, 7); +} + +#define PIXEL_TRANSFORM_ERROR_SCALE 4 +static int mv_err_cost(const MV *mv, const MV *ref, const int *mvjcost, + int *mvcost[2], int error_per_bit) { + if (mvcost) { + const MV diff = { mv->row - ref->row, mv->col - ref->col }; + return (int)ROUND_POWER_OF_TWO_64( + (int64_t)mv_cost(&diff, mvjcost, mvcost) * error_per_bit, + RDDIV_BITS + AV1_PROB_COST_SHIFT - RD_EPB_SHIFT + + PIXEL_TRANSFORM_ERROR_SCALE); + } + return 0; +} + +static int mvsad_err_cost(const MACROBLOCK *x, const MV *mv, const MV *ref, + int sad_per_bit) { + const MV diff = { (mv->row - ref->row) * 8, (mv->col - ref->col) * 8 }; + return ROUND_POWER_OF_TWO( + (unsigned)mv_cost(&diff, x->nmvjointcost, x->mvcost) * sad_per_bit, + AV1_PROB_COST_SHIFT); +} + +void av1_init_dsmotion_compensation(search_site_config *cfg, int stride) { + int len, ss_count = 1; + + cfg->ss[0].mv.col = cfg->ss[0].mv.row = 0; + cfg->ss[0].offset = 0; + + for (len = MAX_FIRST_STEP; len > 0; len /= 2) { + // Generate offsets for 4 search sites per step. + const MV ss_mvs[] = { { -len, 0 }, { len, 0 }, { 0, -len }, { 0, len } }; + int i; + for (i = 0; i < 4; ++i) { + search_site *const ss = &cfg->ss[ss_count++]; + ss->mv = ss_mvs[i]; + ss->offset = ss->mv.row * stride + ss->mv.col; + } + } + + cfg->ss_count = ss_count; + cfg->searches_per_step = 4; +} + +void av1_init3smotion_compensation(search_site_config *cfg, int stride) { + int len, ss_count = 1; + + cfg->ss[0].mv.col = cfg->ss[0].mv.row = 0; + cfg->ss[0].offset = 0; + + for (len = MAX_FIRST_STEP; len > 0; len /= 2) { + // Generate offsets for 8 search sites per step. + const MV ss_mvs[8] = { { -len, 0 }, { len, 0 }, { 0, -len }, + { 0, len }, { -len, -len }, { -len, len }, + { len, -len }, { len, len } }; + int i; + for (i = 0; i < 8; ++i) { + search_site *const ss = &cfg->ss[ss_count++]; + ss->mv = ss_mvs[i]; + ss->offset = ss->mv.row * stride + ss->mv.col; + } + } + + cfg->ss_count = ss_count; + cfg->searches_per_step = 8; +} + +/* + * To avoid the penalty for crossing cache-line read, preload the reference + * area in a small buffer, which is aligned to make sure there won't be crossing + * cache-line read while reading from this buffer. This reduced the cpu + * cycles spent on reading ref data in sub-pixel filter functions. + * TODO: Currently, since sub-pixel search range here is -3 ~ 3, copy 22 rows x + * 32 cols area that is enough for 16x16 macroblock. Later, for SPLITMV, we + * could reduce the area. + */ + +// convert motion vector component to offset for sv[a]f calc +static INLINE int sp(int x) { return x & 7; } + +static INLINE const uint8_t *pre(const uint8_t *buf, int stride, int r, int c) { + const int offset = (r >> 3) * stride + (c >> 3); + return buf + offset; +} + +/* checks if (r, c) has better score than previous best */ +#define CHECK_BETTER(v, r, c) \ + if (c >= minc && c <= maxc && r >= minr && r <= maxr) { \ + MV this_mv = { r, c }; \ + v = mv_err_cost(&this_mv, ref_mv, mvjcost, mvcost, error_per_bit); \ + if (second_pred == NULL) { \ + thismse = vfp->svf(pre(y, y_stride, r, c), y_stride, sp(c), sp(r), \ + src_address, src_stride, &sse); \ + } else if (mask) { \ + thismse = vfp->msvf(pre(y, y_stride, r, c), y_stride, sp(c), sp(r), \ + src_address, src_stride, second_pred, mask, \ + mask_stride, invert_mask, &sse); \ + } else { \ + if (xd->jcp_param.use_jnt_comp_avg) \ + thismse = vfp->jsvaf(pre(y, y_stride, r, c), y_stride, sp(c), sp(r), \ + src_address, src_stride, &sse, second_pred, \ + &xd->jcp_param); \ + else \ + thismse = vfp->svaf(pre(y, y_stride, r, c), y_stride, sp(c), sp(r), \ + src_address, src_stride, &sse, second_pred); \ + } \ + v += thismse; \ + if (v < besterr) { \ + besterr = v; \ + br = r; \ + bc = c; \ + *distortion = thismse; \ + *sse1 = sse; \ + } \ + } else { \ + v = INT_MAX; \ + } + +#define CHECK_BETTER0(v, r, c) CHECK_BETTER(v, r, c) + +/* checks if (r, c) has better score than previous best */ +#define CHECK_BETTER1(v, r, c) \ + if (c >= minc && c <= maxc && r >= minr && r <= maxr) { \ + MV this_mv = { r, c }; \ + thismse = upsampled_pref_error( \ + xd, cm, mi_row, mi_col, &this_mv, vfp, src_address, src_stride, \ + pre(y, y_stride, r, c), y_stride, sp(c), sp(r), second_pred, mask, \ + mask_stride, invert_mask, w, h, &sse, use_accurate_subpel_search); \ + v = mv_err_cost(&this_mv, ref_mv, mvjcost, mvcost, error_per_bit); \ + v += thismse; \ + if (v < besterr) { \ + besterr = v; \ + br = r; \ + bc = c; \ + *distortion = thismse; \ + *sse1 = sse; \ + } \ + } else { \ + v = INT_MAX; \ + } + +#define FIRST_LEVEL_CHECKS \ + { \ + unsigned int left, right, up, down, diag; \ + CHECK_BETTER(left, tr, tc - hstep); \ + CHECK_BETTER(right, tr, tc + hstep); \ + CHECK_BETTER(up, tr - hstep, tc); \ + CHECK_BETTER(down, tr + hstep, tc); \ + whichdir = (left < right ? 0 : 1) + (up < down ? 0 : 2); \ + switch (whichdir) { \ + case 0: CHECK_BETTER(diag, tr - hstep, tc - hstep); break; \ + case 1: CHECK_BETTER(diag, tr - hstep, tc + hstep); break; \ + case 2: CHECK_BETTER(diag, tr + hstep, tc - hstep); break; \ + case 3: CHECK_BETTER(diag, tr + hstep, tc + hstep); break; \ + } \ + } + +#define SECOND_LEVEL_CHECKS \ + { \ + int kr, kc; \ + unsigned int second; \ + if (tr != br && tc != bc) { \ + kr = br - tr; \ + kc = bc - tc; \ + CHECK_BETTER(second, tr + kr, tc + 2 * kc); \ + CHECK_BETTER(second, tr + 2 * kr, tc + kc); \ + } else if (tr == br && tc != bc) { \ + kc = bc - tc; \ + CHECK_BETTER(second, tr + hstep, tc + 2 * kc); \ + CHECK_BETTER(second, tr - hstep, tc + 2 * kc); \ + switch (whichdir) { \ + case 0: \ + case 1: CHECK_BETTER(second, tr + hstep, tc + kc); break; \ + case 2: \ + case 3: CHECK_BETTER(second, tr - hstep, tc + kc); break; \ + } \ + } else if (tr != br && tc == bc) { \ + kr = br - tr; \ + CHECK_BETTER(second, tr + 2 * kr, tc + hstep); \ + CHECK_BETTER(second, tr + 2 * kr, tc - hstep); \ + switch (whichdir) { \ + case 0: \ + case 2: CHECK_BETTER(second, tr + kr, tc + hstep); break; \ + case 1: \ + case 3: CHECK_BETTER(second, tr + kr, tc - hstep); break; \ + } \ + } \ + } + +// TODO(yunqingwang): SECOND_LEVEL_CHECKS_BEST was a rewrote of +// SECOND_LEVEL_CHECKS, and SECOND_LEVEL_CHECKS should be rewritten +// later in the same way. +#define SECOND_LEVEL_CHECKS_BEST(k) \ + { \ + unsigned int second; \ + int br0 = br; \ + int bc0 = bc; \ + assert(tr == br || tc == bc); \ + if (tr == br && tc != bc) { \ + kc = bc - tc; \ + } else if (tr != br && tc == bc) { \ + kr = br - tr; \ + } \ + CHECK_BETTER##k(second, br0 + kr, bc0); \ + CHECK_BETTER##k(second, br0, bc0 + kc); \ + if (br0 != br || bc0 != bc) { \ + CHECK_BETTER##k(second, br0 + kr, bc0 + kc); \ + } \ + } + +#define SETUP_SUBPEL_SEARCH \ + const uint8_t *const src_address = x->plane[0].src.buf; \ + const int src_stride = x->plane[0].src.stride; \ + const MACROBLOCKD *xd = &x->e_mbd; \ + unsigned int besterr = INT_MAX; \ + unsigned int sse; \ + unsigned int whichdir; \ + int thismse; \ + MV *bestmv = &x->best_mv.as_mv; \ + const unsigned int halfiters = iters_per_step; \ + const unsigned int quarteriters = iters_per_step; \ + const unsigned int eighthiters = iters_per_step; \ + const int y_stride = xd->plane[0].pre[0].stride; \ + const int offset = bestmv->row * y_stride + bestmv->col; \ + const uint8_t *const y = xd->plane[0].pre[0].buf; \ + \ + int br = bestmv->row * 8; \ + int bc = bestmv->col * 8; \ + int hstep = 4; \ + int minc, maxc, minr, maxr; \ + int tr = br; \ + int tc = bc; \ + \ + set_subpel_mv_search_range(&x->mv_limits, &minc, &maxc, &minr, &maxr, \ + ref_mv); \ + \ + bestmv->row *= 8; \ + bestmv->col *= 8; + +static unsigned int setup_center_error( + const MACROBLOCKD *xd, const MV *bestmv, const MV *ref_mv, + int error_per_bit, const aom_variance_fn_ptr_t *vfp, + const uint8_t *const src, const int src_stride, const uint8_t *const y, + int y_stride, const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, int offset, int *mvjcost, + int *mvcost[2], unsigned int *sse1, int *distortion) { + unsigned int besterr; + if (second_pred != NULL) { + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + DECLARE_ALIGNED(16, uint16_t, comp_pred16[MAX_SB_SQUARE]); + uint8_t *comp_pred = CONVERT_TO_BYTEPTR(comp_pred16); + if (mask) { + aom_highbd_comp_mask_pred(comp_pred, second_pred, w, h, y + offset, + y_stride, mask, mask_stride, invert_mask); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + aom_highbd_jnt_comp_avg_pred(comp_pred, second_pred, w, h, y + offset, + y_stride, &xd->jcp_param); + else + aom_highbd_comp_avg_pred(comp_pred, second_pred, w, h, y + offset, + y_stride); + } + besterr = vfp->vf(comp_pred, w, src, src_stride, sse1); + } else { + DECLARE_ALIGNED(16, uint8_t, comp_pred[MAX_SB_SQUARE]); + if (mask) { + aom_comp_mask_pred(comp_pred, second_pred, w, h, y + offset, y_stride, + mask, mask_stride, invert_mask); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + aom_jnt_comp_avg_pred(comp_pred, second_pred, w, h, y + offset, + y_stride, &xd->jcp_param); + else + aom_comp_avg_pred(comp_pred, second_pred, w, h, y + offset, y_stride); + } + besterr = vfp->vf(comp_pred, w, src, src_stride, sse1); + } + } else { + besterr = vfp->vf(y + offset, y_stride, src, src_stride, sse1); + } + *distortion = besterr; + besterr += mv_err_cost(bestmv, ref_mv, mvjcost, mvcost, error_per_bit); + return besterr; +} + +static INLINE int divide_and_round(int n, int d) { + return ((n < 0) ^ (d < 0)) ? ((n - d / 2) / d) : ((n + d / 2) / d); +} + +static INLINE int is_cost_list_wellbehaved(int *cost_list) { + return cost_list[0] < cost_list[1] && cost_list[0] < cost_list[2] && + cost_list[0] < cost_list[3] && cost_list[0] < cost_list[4]; +} + +// Returns surface minima estimate at given precision in 1/2^n bits. +// Assume a model for the cost surface: S = A(x - x0)^2 + B(y - y0)^2 + C +// For a given set of costs S0, S1, S2, S3, S4 at points +// (y, x) = (0, 0), (0, -1), (1, 0), (0, 1) and (-1, 0) respectively, +// the solution for the location of the minima (x0, y0) is given by: +// x0 = 1/2 (S1 - S3)/(S1 + S3 - 2*S0), +// y0 = 1/2 (S4 - S2)/(S4 + S2 - 2*S0). +// The code below is an integerized version of that. +static void get_cost_surf_min(int *cost_list, int *ir, int *ic, int bits) { + *ic = divide_and_round((cost_list[1] - cost_list[3]) * (1 << (bits - 1)), + (cost_list[1] - 2 * cost_list[0] + cost_list[3])); + *ir = divide_and_round((cost_list[4] - cost_list[2]) * (1 << (bits - 1)), + (cost_list[4] - 2 * cost_list[0] + cost_list[2])); +} + +int av1_find_best_sub_pixel_tree_pruned_evenmore( + MACROBLOCK *x, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *ref_mv, int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], int *distortion, + unsigned int *sse1, const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + SETUP_SUBPEL_SEARCH; + besterr = setup_center_error(xd, bestmv, ref_mv, error_per_bit, vfp, + src_address, src_stride, y, y_stride, + second_pred, mask, mask_stride, invert_mask, w, + h, offset, mvjcost, mvcost, sse1, distortion); + (void)halfiters; + (void)quarteriters; + (void)eighthiters; + (void)whichdir; + (void)allow_hp; + (void)forced_stop; + (void)hstep; + (void)use_accurate_subpel_search; + (void)cm; + (void)mi_row; + (void)mi_col; + + if (cost_list && cost_list[0] != INT_MAX && cost_list[1] != INT_MAX && + cost_list[2] != INT_MAX && cost_list[3] != INT_MAX && + cost_list[4] != INT_MAX && is_cost_list_wellbehaved(cost_list)) { + int ir, ic; + unsigned int minpt; + get_cost_surf_min(cost_list, &ir, &ic, 2); + if (ir != 0 || ic != 0) { + CHECK_BETTER(minpt, tr + 2 * ir, tc + 2 * ic); + } + } else { + FIRST_LEVEL_CHECKS; + if (halfiters > 1) { + SECOND_LEVEL_CHECKS; + } + + tr = br; + tc = bc; + + // Each subsequent iteration checks at least one point in common with + // the last iteration could be 2 ( if diag selected) 1/4 pel + // Note forced_stop: 0 - full, 1 - qtr only, 2 - half only + if (forced_stop != 2) { + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (quarteriters > 1) { + SECOND_LEVEL_CHECKS; + } + } + } + + tr = br; + tc = bc; + + if (allow_hp && forced_stop == 0) { + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (eighthiters > 1) { + SECOND_LEVEL_CHECKS; + } + } + + bestmv->row = br; + bestmv->col = bc; + + return besterr; +} + +int av1_find_best_sub_pixel_tree_pruned_more( + MACROBLOCK *x, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *ref_mv, int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], int *distortion, + unsigned int *sse1, const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + SETUP_SUBPEL_SEARCH; + (void)use_accurate_subpel_search; + (void)cm; + (void)mi_row; + (void)mi_col; + + besterr = setup_center_error(xd, bestmv, ref_mv, error_per_bit, vfp, + src_address, src_stride, y, y_stride, + second_pred, mask, mask_stride, invert_mask, w, + h, offset, mvjcost, mvcost, sse1, distortion); + if (cost_list && cost_list[0] != INT_MAX && cost_list[1] != INT_MAX && + cost_list[2] != INT_MAX && cost_list[3] != INT_MAX && + cost_list[4] != INT_MAX && is_cost_list_wellbehaved(cost_list)) { + unsigned int minpt; + int ir, ic; + get_cost_surf_min(cost_list, &ir, &ic, 1); + if (ir != 0 || ic != 0) { + CHECK_BETTER(minpt, tr + ir * hstep, tc + ic * hstep); + } + } else { + FIRST_LEVEL_CHECKS; + if (halfiters > 1) { + SECOND_LEVEL_CHECKS; + } + } + + // Each subsequent iteration checks at least one point in common with + // the last iteration could be 2 ( if diag selected) 1/4 pel + + // Note forced_stop: 0 - full, 1 - qtr only, 2 - half only + if (forced_stop != 2) { + tr = br; + tc = bc; + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (quarteriters > 1) { + SECOND_LEVEL_CHECKS; + } + } + + if (allow_hp && forced_stop == 0) { + tr = br; + tc = bc; + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (eighthiters > 1) { + SECOND_LEVEL_CHECKS; + } + } + // These lines insure static analysis doesn't warn that + // tr and tc aren't used after the above point. + (void)tr; + (void)tc; + + bestmv->row = br; + bestmv->col = bc; + + return besterr; +} + +int av1_find_best_sub_pixel_tree_pruned( + MACROBLOCK *x, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *ref_mv, int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], int *distortion, + unsigned int *sse1, const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + SETUP_SUBPEL_SEARCH; + (void)use_accurate_subpel_search; + (void)cm; + (void)mi_row; + (void)mi_col; + + besterr = setup_center_error(xd, bestmv, ref_mv, error_per_bit, vfp, + src_address, src_stride, y, y_stride, + second_pred, mask, mask_stride, invert_mask, w, + h, offset, mvjcost, mvcost, sse1, distortion); + if (cost_list && cost_list[0] != INT_MAX && cost_list[1] != INT_MAX && + cost_list[2] != INT_MAX && cost_list[3] != INT_MAX && + cost_list[4] != INT_MAX) { + unsigned int left, right, up, down, diag; + whichdir = (cost_list[1] < cost_list[3] ? 0 : 1) + + (cost_list[2] < cost_list[4] ? 0 : 2); + switch (whichdir) { + case 0: + CHECK_BETTER(left, tr, tc - hstep); + CHECK_BETTER(down, tr + hstep, tc); + CHECK_BETTER(diag, tr + hstep, tc - hstep); + break; + case 1: + CHECK_BETTER(right, tr, tc + hstep); + CHECK_BETTER(down, tr + hstep, tc); + CHECK_BETTER(diag, tr + hstep, tc + hstep); + break; + case 2: + CHECK_BETTER(left, tr, tc - hstep); + CHECK_BETTER(up, tr - hstep, tc); + CHECK_BETTER(diag, tr - hstep, tc - hstep); + break; + case 3: + CHECK_BETTER(right, tr, tc + hstep); + CHECK_BETTER(up, tr - hstep, tc); + CHECK_BETTER(diag, tr - hstep, tc + hstep); + break; + } + } else { + FIRST_LEVEL_CHECKS; + if (halfiters > 1) { + SECOND_LEVEL_CHECKS; + } + } + + tr = br; + tc = bc; + + // Each subsequent iteration checks at least one point in common with + // the last iteration could be 2 ( if diag selected) 1/4 pel + + // Note forced_stop: 0 - full, 1 - qtr only, 2 - half only + if (forced_stop != 2) { + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (quarteriters > 1) { + SECOND_LEVEL_CHECKS; + } + tr = br; + tc = bc; + } + + if (allow_hp && forced_stop == 0) { + hstep >>= 1; + FIRST_LEVEL_CHECKS; + if (eighthiters > 1) { + SECOND_LEVEL_CHECKS; + } + tr = br; + tc = bc; + } + // These lines insure static analysis doesn't warn that + // tr and tc aren't used after the above point. + (void)tr; + (void)tc; + + bestmv->row = br; + bestmv->col = bc; + + return besterr; +} + +/* clang-format off */ +static const MV search_step_table[12] = { + // left, right, up, down + { 0, -4 }, { 0, 4 }, { -4, 0 }, { 4, 0 }, + { 0, -2 }, { 0, 2 }, { -2, 0 }, { 2, 0 }, + { 0, -1 }, { 0, 1 }, { -1, 0 }, { 1, 0 } +}; +/* clang-format on */ + +static int upsampled_pref_error(MACROBLOCKD *xd, const AV1_COMMON *const cm, + int mi_row, int mi_col, const MV *const mv, + const aom_variance_fn_ptr_t *vfp, + const uint8_t *const src, const int src_stride, + const uint8_t *const y, int y_stride, + int subpel_x_q3, int subpel_y_q3, + const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + unsigned int *sse, int subpel_search) { + unsigned int besterr; + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + DECLARE_ALIGNED(16, uint16_t, pred16[MAX_SB_SQUARE]); + uint8_t *pred8 = CONVERT_TO_BYTEPTR(pred16); + if (second_pred != NULL) { + if (mask) { + aom_highbd_comp_mask_upsampled_pred( + xd, cm, mi_row, mi_col, mv, pred8, second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, mask, mask_stride, invert_mask, xd->bd, + subpel_search); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + aom_highbd_jnt_comp_avg_upsampled_pred( + xd, cm, mi_row, mi_col, mv, pred8, second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, xd->bd, &xd->jcp_param, subpel_search); + else + aom_highbd_comp_avg_upsampled_pred( + xd, cm, mi_row, mi_col, mv, pred8, second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, xd->bd, subpel_search); + } + } else { + aom_highbd_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred8, w, h, + subpel_x_q3, subpel_y_q3, y, y_stride, xd->bd, + subpel_search); + } + besterr = vfp->vf(pred8, w, src, src_stride, sse); + } else { + DECLARE_ALIGNED(16, uint8_t, pred[MAX_SB_SQUARE]); + if (second_pred != NULL) { + if (mask) { + aom_comp_mask_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred, + second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, mask, + mask_stride, invert_mask, subpel_search); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + aom_jnt_comp_avg_upsampled_pred( + xd, cm, mi_row, mi_col, mv, pred, second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, &xd->jcp_param, subpel_search); + else + aom_comp_avg_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred, + second_pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, subpel_search); + } + } else { + aom_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, subpel_search); + } + + besterr = vfp->vf(pred, w, src, src_stride, sse); + } + return besterr; +} + +static unsigned int upsampled_setup_center_error( + MACROBLOCKD *xd, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *bestmv, const MV *ref_mv, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, const uint8_t *const src, + const int src_stride, const uint8_t *const y, int y_stride, + const uint8_t *second_pred, const uint8_t *mask, int mask_stride, + int invert_mask, int w, int h, int offset, int *mvjcost, int *mvcost[2], + unsigned int *sse1, int *distortion, int subpel_search) { + unsigned int besterr = + upsampled_pref_error(xd, cm, mi_row, mi_col, bestmv, vfp, src, src_stride, + y + offset, y_stride, 0, 0, second_pred, mask, + mask_stride, invert_mask, w, h, sse1, subpel_search); + *distortion = besterr; + besterr += mv_err_cost(bestmv, ref_mv, mvjcost, mvcost, error_per_bit); + return besterr; +} + +// when use_accurate_subpel_search == 0 +static INLINE unsigned int estimate_upsampled_pref_error( + MACROBLOCKD *xd, const aom_variance_fn_ptr_t *vfp, const uint8_t *const src, + const int src_stride, const uint8_t *const pre, int y_stride, + int subpel_x_q3, int subpel_y_q3, const uint8_t *second_pred, + const uint8_t *mask, int mask_stride, int invert_mask, unsigned int *sse) { + if (second_pred == NULL) { + return vfp->svf(pre, y_stride, subpel_x_q3, subpel_y_q3, src, src_stride, + sse); + } else if (mask) { + return vfp->msvf(pre, y_stride, subpel_x_q3, subpel_y_q3, src, src_stride, + second_pred, mask, mask_stride, invert_mask, sse); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + return vfp->jsvaf(pre, y_stride, subpel_x_q3, subpel_y_q3, src, + src_stride, sse, second_pred, &xd->jcp_param); + else + return vfp->svaf(pre, y_stride, subpel_x_q3, subpel_y_q3, src, src_stride, + sse, second_pred); + } +} + +int av1_find_best_sub_pixel_tree( + MACROBLOCK *x, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *ref_mv, int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], int *distortion, + unsigned int *sse1, const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + const uint8_t *const src_address = x->plane[0].src.buf; + const int src_stride = x->plane[0].src.stride; + MACROBLOCKD *xd = &x->e_mbd; + unsigned int besterr = INT_MAX; + unsigned int sse; + unsigned int thismse; + const int y_stride = xd->plane[0].pre[0].stride; + MV *bestmv = &x->best_mv.as_mv; + const int offset = bestmv->row * y_stride + bestmv->col; + const uint8_t *const y = xd->plane[0].pre[0].buf; + + int br = bestmv->row * 8; + int bc = bestmv->col * 8; + int hstep = 4; + int iter, round = 3 - forced_stop; + int tr = br; + int tc = bc; + const MV *search_step = search_step_table; + int idx, best_idx = -1; + unsigned int cost_array[5]; + int kr, kc; + int minc, maxc, minr, maxr; + + set_subpel_mv_search_range(&x->mv_limits, &minc, &maxc, &minr, &maxr, ref_mv); + + if (!allow_hp) + if (round == 3) round = 2; + + bestmv->row *= 8; + bestmv->col *= 8; + + if (use_accurate_subpel_search) + besterr = upsampled_setup_center_error( + xd, cm, mi_row, mi_col, bestmv, ref_mv, error_per_bit, vfp, src_address, + src_stride, y, y_stride, second_pred, mask, mask_stride, invert_mask, w, + h, offset, mvjcost, mvcost, sse1, distortion, + use_accurate_subpel_search); + else + besterr = setup_center_error(xd, bestmv, ref_mv, error_per_bit, vfp, + src_address, src_stride, y, y_stride, + second_pred, mask, mask_stride, invert_mask, w, + h, offset, mvjcost, mvcost, sse1, distortion); + + (void)cost_list; // to silence compiler warning + + for (iter = 0; iter < round; ++iter) { + // Check vertical and horizontal sub-pixel positions. + for (idx = 0; idx < 4; ++idx) { + tr = br + search_step[idx].row; + tc = bc + search_step[idx].col; + if (tc >= minc && tc <= maxc && tr >= minr && tr <= maxr) { + MV this_mv = { tr, tc }; + + if (use_accurate_subpel_search) { + thismse = upsampled_pref_error( + xd, cm, mi_row, mi_col, &this_mv, vfp, src_address, src_stride, + pre(y, y_stride, tr, tc), y_stride, sp(tc), sp(tr), second_pred, + mask, mask_stride, invert_mask, w, h, &sse, + use_accurate_subpel_search); + } else { + thismse = estimate_upsampled_pref_error( + xd, vfp, src_address, src_stride, pre(y, y_stride, tr, tc), + y_stride, sp(tc), sp(tr), second_pred, mask, mask_stride, + invert_mask, &sse); + } + + cost_array[idx] = thismse + mv_err_cost(&this_mv, ref_mv, mvjcost, + mvcost, error_per_bit); + + if (cost_array[idx] < besterr) { + best_idx = idx; + besterr = cost_array[idx]; + *distortion = thismse; + *sse1 = sse; + } + } else { + cost_array[idx] = INT_MAX; + } + } + + // Check diagonal sub-pixel position + kc = (cost_array[0] <= cost_array[1] ? -hstep : hstep); + kr = (cost_array[2] <= cost_array[3] ? -hstep : hstep); + + tc = bc + kc; + tr = br + kr; + if (tc >= minc && tc <= maxc && tr >= minr && tr <= maxr) { + MV this_mv = { tr, tc }; + + if (use_accurate_subpel_search) { + thismse = upsampled_pref_error( + xd, cm, mi_row, mi_col, &this_mv, vfp, src_address, src_stride, + pre(y, y_stride, tr, tc), y_stride, sp(tc), sp(tr), second_pred, + mask, mask_stride, invert_mask, w, h, &sse, + use_accurate_subpel_search); + } else { + thismse = estimate_upsampled_pref_error( + xd, vfp, src_address, src_stride, pre(y, y_stride, tr, tc), + y_stride, sp(tc), sp(tr), second_pred, mask, mask_stride, + invert_mask, &sse); + } + + cost_array[4] = thismse + mv_err_cost(&this_mv, ref_mv, mvjcost, mvcost, + error_per_bit); + + if (cost_array[4] < besterr) { + best_idx = 4; + besterr = cost_array[4]; + *distortion = thismse; + *sse1 = sse; + } + } else { + cost_array[idx] = INT_MAX; + } + + if (best_idx < 4 && best_idx >= 0) { + br += search_step[best_idx].row; + bc += search_step[best_idx].col; + } else if (best_idx == 4) { + br = tr; + bc = tc; + } + + if (iters_per_step > 1 && best_idx != -1) { + if (use_accurate_subpel_search) { + SECOND_LEVEL_CHECKS_BEST(1); + } else { + SECOND_LEVEL_CHECKS_BEST(0); + } + } + + search_step += 4; + hstep >>= 1; + best_idx = -1; + } + + // These lines insure static analysis doesn't warn that + // tr and tc aren't used after the above point. + (void)tr; + (void)tc; + + bestmv->row = br; + bestmv->col = bc; + + return besterr; +} + +#undef PRE +#undef CHECK_BETTER + +unsigned int av1_compute_motion_cost(const AV1_COMP *cpi, MACROBLOCK *const x, + BLOCK_SIZE bsize, int mi_row, int mi_col, + const MV *this_mv) { + const AV1_COMMON *const cm = &cpi->common; + MACROBLOCKD *xd = &x->e_mbd; + const uint8_t *const src = x->plane[0].src.buf; + const int src_stride = x->plane[0].src.stride; + uint8_t *const dst = xd->plane[0].dst.buf; + const int dst_stride = xd->plane[0].dst.stride; + const aom_variance_fn_ptr_t *vfp = &cpi->fn_ptr[bsize]; + const int_mv ref_mv = av1_get_ref_mv(x, 0); + unsigned int mse; + unsigned int sse; + + av1_build_inter_predictors_sby(cm, xd, mi_row, mi_col, NULL, bsize); + mse = vfp->vf(dst, dst_stride, src, src_stride, &sse); + mse += mv_err_cost(this_mv, &ref_mv.as_mv, x->nmvjointcost, x->mvcost, + x->errorperbit); + return mse; +} + +// Refine MV in a small range +unsigned int av1_refine_warped_mv(const AV1_COMP *cpi, MACROBLOCK *const x, + BLOCK_SIZE bsize, int mi_row, int mi_col, + int *pts0, int *pts_inref0, + int total_samples) { + const AV1_COMMON *const cm = &cpi->common; + MACROBLOCKD *xd = &x->e_mbd; + MB_MODE_INFO *mbmi = xd->mi[0]; + const MV neighbors[8] = { { 0, -1 }, { 1, 0 }, { 0, 1 }, { -1, 0 }, + { 0, -2 }, { 2, 0 }, { 0, 2 }, { -2, 0 } }; + const int_mv ref_mv = av1_get_ref_mv(x, 0); + int16_t br = mbmi->mv[0].as_mv.row; + int16_t bc = mbmi->mv[0].as_mv.col; + int16_t *tr = &mbmi->mv[0].as_mv.row; + int16_t *tc = &mbmi->mv[0].as_mv.col; + WarpedMotionParams best_wm_params = mbmi->wm_params; + int best_num_proj_ref = mbmi->num_proj_ref; + unsigned int bestmse; + int minc, maxc, minr, maxr; + const int start = cm->allow_high_precision_mv ? 0 : 4; + int ite; + + set_subpel_mv_search_range(&x->mv_limits, &minc, &maxc, &minr, &maxr, + &ref_mv.as_mv); + + // Calculate the center position's error + assert(bc >= minc && bc <= maxc && br >= minr && br <= maxr); + bestmse = av1_compute_motion_cost(cpi, x, bsize, mi_row, mi_col, + &mbmi->mv[0].as_mv); + + // MV search + for (ite = 0; ite < 2; ++ite) { + int best_idx = -1; + int idx; + + for (idx = start; idx < start + 4; ++idx) { + unsigned int thismse; + + *tr = br + neighbors[idx].row; + *tc = bc + neighbors[idx].col; + + if (*tc >= minc && *tc <= maxc && *tr >= minr && *tr <= maxr) { + MV this_mv = { *tr, *tc }; + int pts[SAMPLES_ARRAY_SIZE], pts_inref[SAMPLES_ARRAY_SIZE]; + + memcpy(pts, pts0, total_samples * 2 * sizeof(*pts0)); + memcpy(pts_inref, pts_inref0, total_samples * 2 * sizeof(*pts_inref0)); + if (total_samples > 1) + mbmi->num_proj_ref = + selectSamples(&this_mv, pts, pts_inref, total_samples, bsize); + + if (!find_projection(mbmi->num_proj_ref, pts, pts_inref, bsize, *tr, + *tc, &mbmi->wm_params, mi_row, mi_col)) { + thismse = + av1_compute_motion_cost(cpi, x, bsize, mi_row, mi_col, &this_mv); + + if (thismse < bestmse) { + best_idx = idx; + best_wm_params = mbmi->wm_params; + best_num_proj_ref = mbmi->num_proj_ref; + bestmse = thismse; + } + } + } + } + + if (best_idx == -1) break; + + if (best_idx >= 0) { + br += neighbors[best_idx].row; + bc += neighbors[best_idx].col; + } + } + + *tr = br; + *tc = bc; + mbmi->wm_params = best_wm_params; + mbmi->num_proj_ref = best_num_proj_ref; + return bestmse; +} + +static INLINE int check_bounds(const MvLimits *mv_limits, int row, int col, + int range) { + return ((row - range) >= mv_limits->row_min) & + ((row + range) <= mv_limits->row_max) & + ((col - range) >= mv_limits->col_min) & + ((col + range) <= mv_limits->col_max); +} + +static INLINE int is_mv_in(const MvLimits *mv_limits, const MV *mv) { + return (mv->col >= mv_limits->col_min) && (mv->col <= mv_limits->col_max) && + (mv->row >= mv_limits->row_min) && (mv->row <= mv_limits->row_max); +} + +#define CHECK_BETTER \ + { \ + if (thissad < bestsad) { \ + if (use_mvcost) \ + thissad += mvsad_err_cost(x, &this_mv, &fcenter_mv, sad_per_bit); \ + if (thissad < bestsad) { \ + bestsad = thissad; \ + best_site = i; \ + } \ + } \ + } + +#define MAX_PATTERN_SCALES 11 +#define MAX_PATTERN_CANDIDATES 8 // max number of canddiates per scale +#define PATTERN_CANDIDATES_REF 3 // number of refinement candidates + +// Calculate and return a sad+mvcost list around an integer best pel. +static INLINE void calc_int_cost_list(const MACROBLOCK *x, + const MV *const ref_mv, int sadpb, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *best_mv, int *cost_list) { + static const MV neighbors[4] = { { 0, -1 }, { 1, 0 }, { 0, 1 }, { -1, 0 } }; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &x->e_mbd.plane[0].pre[0]; + const MV fcenter_mv = { ref_mv->row >> 3, ref_mv->col >> 3 }; + const int br = best_mv->row; + const int bc = best_mv->col; + int i; + unsigned int sse; + const MV this_mv = { br, bc }; + + cost_list[0] = + fn_ptr->vf(what->buf, what->stride, get_buf_from_mv(in_what, &this_mv), + in_what->stride, &sse) + + mvsad_err_cost(x, &this_mv, &fcenter_mv, sadpb); + if (check_bounds(&x->mv_limits, br, bc, 1)) { + for (i = 0; i < 4; i++) { + const MV neighbor_mv = { br + neighbors[i].row, bc + neighbors[i].col }; + cost_list[i + 1] = fn_ptr->vf(what->buf, what->stride, + get_buf_from_mv(in_what, &neighbor_mv), + in_what->stride, &sse) + + mv_err_cost(&neighbor_mv, &fcenter_mv, x->nmvjointcost, + x->mvcost, x->errorperbit); + } + } else { + for (i = 0; i < 4; i++) { + const MV neighbor_mv = { br + neighbors[i].row, bc + neighbors[i].col }; + if (!is_mv_in(&x->mv_limits, &neighbor_mv)) + cost_list[i + 1] = INT_MAX; + else + cost_list[i + 1] = + fn_ptr->vf(what->buf, what->stride, + get_buf_from_mv(in_what, &neighbor_mv), in_what->stride, + &sse) + + mv_err_cost(&neighbor_mv, &fcenter_mv, x->nmvjointcost, x->mvcost, + x->errorperbit); + } + } +} + +static INLINE void calc_int_sad_list(const MACROBLOCK *x, + const MV *const ref_mv, int sadpb, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *best_mv, int *cost_list, + const int use_mvcost, const int bestsad) { + static const MV neighbors[4] = { { 0, -1 }, { 1, 0 }, { 0, 1 }, { -1, 0 } }; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &x->e_mbd.plane[0].pre[0]; + const MV fcenter_mv = { ref_mv->row >> 3, ref_mv->col >> 3 }; + int i; + const int br = best_mv->row; + const int bc = best_mv->col; + + if (cost_list[0] == INT_MAX) { + cost_list[0] = bestsad; + if (check_bounds(&x->mv_limits, br, bc, 1)) { + for (i = 0; i < 4; i++) { + const MV this_mv = { br + neighbors[i].row, bc + neighbors[i].col }; + cost_list[i + 1] = + fn_ptr->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + } + } else { + for (i = 0; i < 4; i++) { + const MV this_mv = { br + neighbors[i].row, bc + neighbors[i].col }; + if (!is_mv_in(&x->mv_limits, &this_mv)) + cost_list[i + 1] = INT_MAX; + else + cost_list[i + 1] = + fn_ptr->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + } + } + } else { + if (use_mvcost) { + for (i = 0; i < 4; i++) { + const MV this_mv = { br + neighbors[i].row, bc + neighbors[i].col }; + if (cost_list[i + 1] != INT_MAX) { + cost_list[i + 1] += mvsad_err_cost(x, &this_mv, &fcenter_mv, sadpb); + } + } + } + } +} + +// Generic pattern search function that searches over multiple scales. +// Each scale can have a different number of candidates and shape of +// candidates as indicated in the num_candidates and candidates arrays +// passed into this function +// +static int pattern_search( + MACROBLOCK *x, MV *start_mv, int search_param, int sad_per_bit, + int do_init_search, int *cost_list, const aom_variance_fn_ptr_t *vfp, + int use_mvcost, const MV *center_mv, + const int num_candidates[MAX_PATTERN_SCALES], + const MV candidates[MAX_PATTERN_SCALES][MAX_PATTERN_CANDIDATES]) { + const MACROBLOCKD *const xd = &x->e_mbd; + static const int search_param_to_steps[MAX_MVSEARCH_STEPS] = { + 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, + }; + int i, s, t; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const int last_is_4 = num_candidates[0] == 4; + int br, bc; + int bestsad = INT_MAX; + int thissad; + int k = -1; + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + assert(search_param < MAX_MVSEARCH_STEPS); + int best_init_s = search_param_to_steps[search_param]; + // adjust ref_mv to make sure it is within MV range + clamp_mv(start_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + br = start_mv->row; + bc = start_mv->col; + if (cost_list != NULL) { + cost_list[0] = cost_list[1] = cost_list[2] = cost_list[3] = cost_list[4] = + INT_MAX; + } + + // Work out the start point for the search + bestsad = vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, start_mv), in_what->stride) + + mvsad_err_cost(x, start_mv, &fcenter_mv, sad_per_bit); + + // Search all possible scales upto the search param around the center point + // pick the scale of the point that is best as the starting scale of + // further steps around it. + if (do_init_search) { + s = best_init_s; + best_init_s = -1; + for (t = 0; t <= s; ++t) { + int best_site = -1; + if (check_bounds(&x->mv_limits, br, bc, 1 << t)) { + for (i = 0; i < num_candidates[t]; i++) { + const MV this_mv = { br + candidates[t][i].row, + bc + candidates[t][i].col }; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } else { + for (i = 0; i < num_candidates[t]; i++) { + const MV this_mv = { br + candidates[t][i].row, + bc + candidates[t][i].col }; + if (!is_mv_in(&x->mv_limits, &this_mv)) continue; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } + if (best_site == -1) { + continue; + } else { + best_init_s = t; + k = best_site; + } + } + if (best_init_s != -1) { + br += candidates[best_init_s][k].row; + bc += candidates[best_init_s][k].col; + } + } + + // If the center point is still the best, just skip this and move to + // the refinement step. + if (best_init_s != -1) { + const int last_s = (last_is_4 && cost_list != NULL); + int best_site = -1; + s = best_init_s; + + for (; s >= last_s; s--) { + // No need to search all points the 1st time if initial search was used + if (!do_init_search || s != best_init_s) { + if (check_bounds(&x->mv_limits, br, bc, 1 << s)) { + for (i = 0; i < num_candidates[s]; i++) { + const MV this_mv = { br + candidates[s][i].row, + bc + candidates[s][i].col }; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } else { + for (i = 0; i < num_candidates[s]; i++) { + const MV this_mv = { br + candidates[s][i].row, + bc + candidates[s][i].col }; + if (!is_mv_in(&x->mv_limits, &this_mv)) continue; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } + + if (best_site == -1) { + continue; + } else { + br += candidates[s][best_site].row; + bc += candidates[s][best_site].col; + k = best_site; + } + } + + do { + int next_chkpts_indices[PATTERN_CANDIDATES_REF]; + best_site = -1; + next_chkpts_indices[0] = (k == 0) ? num_candidates[s] - 1 : k - 1; + next_chkpts_indices[1] = k; + next_chkpts_indices[2] = (k == num_candidates[s] - 1) ? 0 : k + 1; + + if (check_bounds(&x->mv_limits, br, bc, 1 << s)) { + for (i = 0; i < PATTERN_CANDIDATES_REF; i++) { + const MV this_mv = { + br + candidates[s][next_chkpts_indices[i]].row, + bc + candidates[s][next_chkpts_indices[i]].col + }; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } else { + for (i = 0; i < PATTERN_CANDIDATES_REF; i++) { + const MV this_mv = { + br + candidates[s][next_chkpts_indices[i]].row, + bc + candidates[s][next_chkpts_indices[i]].col + }; + if (!is_mv_in(&x->mv_limits, &this_mv)) continue; + thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } + + if (best_site != -1) { + k = next_chkpts_indices[best_site]; + br += candidates[s][k].row; + bc += candidates[s][k].col; + } + } while (best_site != -1); + } + + // Note: If we enter the if below, then cost_list must be non-NULL. + if (s == 0) { + cost_list[0] = bestsad; + if (!do_init_search || s != best_init_s) { + if (check_bounds(&x->mv_limits, br, bc, 1 << s)) { + for (i = 0; i < num_candidates[s]; i++) { + const MV this_mv = { br + candidates[s][i].row, + bc + candidates[s][i].col }; + cost_list[i + 1] = thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } else { + for (i = 0; i < num_candidates[s]; i++) { + const MV this_mv = { br + candidates[s][i].row, + bc + candidates[s][i].col }; + if (!is_mv_in(&x->mv_limits, &this_mv)) continue; + cost_list[i + 1] = thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } + + if (best_site != -1) { + br += candidates[s][best_site].row; + bc += candidates[s][best_site].col; + k = best_site; + } + } + while (best_site != -1) { + int next_chkpts_indices[PATTERN_CANDIDATES_REF]; + best_site = -1; + next_chkpts_indices[0] = (k == 0) ? num_candidates[s] - 1 : k - 1; + next_chkpts_indices[1] = k; + next_chkpts_indices[2] = (k == num_candidates[s] - 1) ? 0 : k + 1; + cost_list[1] = cost_list[2] = cost_list[3] = cost_list[4] = INT_MAX; + cost_list[((k + 2) % 4) + 1] = cost_list[0]; + cost_list[0] = bestsad; + + if (check_bounds(&x->mv_limits, br, bc, 1 << s)) { + for (i = 0; i < PATTERN_CANDIDATES_REF; i++) { + const MV this_mv = { + br + candidates[s][next_chkpts_indices[i]].row, + bc + candidates[s][next_chkpts_indices[i]].col + }; + cost_list[next_chkpts_indices[i] + 1] = thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } else { + for (i = 0; i < PATTERN_CANDIDATES_REF; i++) { + const MV this_mv = { + br + candidates[s][next_chkpts_indices[i]].row, + bc + candidates[s][next_chkpts_indices[i]].col + }; + if (!is_mv_in(&x->mv_limits, &this_mv)) { + cost_list[next_chkpts_indices[i] + 1] = INT_MAX; + continue; + } + cost_list[next_chkpts_indices[i] + 1] = thissad = + vfp->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &this_mv), in_what->stride); + CHECK_BETTER + } + } + + if (best_site != -1) { + k = next_chkpts_indices[best_site]; + br += candidates[s][k].row; + bc += candidates[s][k].col; + } + } + } + } + + // Returns the one-away integer pel cost/sad around the best as follows: + // cost_list[0]: cost/sad at the best integer pel + // cost_list[1]: cost/sad at delta {0, -1} (left) from the best integer pel + // cost_list[2]: cost/sad at delta { 1, 0} (bottom) from the best integer pel + // cost_list[3]: cost/sad at delta { 0, 1} (right) from the best integer pel + // cost_list[4]: cost/sad at delta {-1, 0} (top) from the best integer pel + if (cost_list) { + const MV best_int_mv = { br, bc }; + if (last_is_4) { + calc_int_sad_list(x, center_mv, sad_per_bit, vfp, &best_int_mv, cost_list, + use_mvcost, bestsad); + } else { + calc_int_cost_list(x, center_mv, sad_per_bit, vfp, &best_int_mv, + cost_list); + } + } + x->best_mv.as_mv.row = br; + x->best_mv.as_mv.col = bc; + return bestsad; +} + +int av1_get_mvpred_var(const MACROBLOCK *x, const MV *best_mv, + const MV *center_mv, const aom_variance_fn_ptr_t *vfp, + int use_mvcost) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const MV mv = { best_mv->row * 8, best_mv->col * 8 }; + unsigned int unused; + + return vfp->vf(what->buf, what->stride, get_buf_from_mv(in_what, best_mv), + in_what->stride, &unused) + + (use_mvcost ? mv_err_cost(&mv, center_mv, x->nmvjointcost, x->mvcost, + x->errorperbit) + : 0); +} + +int av1_get_mvpred_av_var(const MACROBLOCK *x, const MV *best_mv, + const MV *center_mv, const uint8_t *second_pred, + const aom_variance_fn_ptr_t *vfp, int use_mvcost) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const MV mv = { best_mv->row * 8, best_mv->col * 8 }; + unsigned int unused; + + if (xd->jcp_param.use_jnt_comp_avg) + return vfp->jsvaf(get_buf_from_mv(in_what, best_mv), in_what->stride, 0, 0, + what->buf, what->stride, &unused, second_pred, + &xd->jcp_param) + + (use_mvcost ? mv_err_cost(&mv, center_mv, x->nmvjointcost, x->mvcost, + x->errorperbit) + : 0); + else + return vfp->svaf(get_buf_from_mv(in_what, best_mv), in_what->stride, 0, 0, + what->buf, what->stride, &unused, second_pred) + + (use_mvcost ? mv_err_cost(&mv, center_mv, x->nmvjointcost, x->mvcost, + x->errorperbit) + : 0); +} + +int av1_get_mvpred_mask_var(const MACROBLOCK *x, const MV *best_mv, + const MV *center_mv, const uint8_t *second_pred, + const uint8_t *mask, int mask_stride, + int invert_mask, const aom_variance_fn_ptr_t *vfp, + int use_mvcost) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const MV mv = { best_mv->row * 8, best_mv->col * 8 }; + unsigned int unused; + + return vfp->msvf(what->buf, what->stride, 0, 0, + get_buf_from_mv(in_what, best_mv), in_what->stride, + second_pred, mask, mask_stride, invert_mask, &unused) + + (use_mvcost ? mv_err_cost(&mv, center_mv, x->nmvjointcost, x->mvcost, + x->errorperbit) + : 0); +} + +int av1_hex_search(MACROBLOCK *x, MV *start_mv, int search_param, + int sad_per_bit, int do_init_search, int *cost_list, + const aom_variance_fn_ptr_t *vfp, int use_mvcost, + const MV *center_mv) { + // First scale has 8-closest points, the rest have 6 points in hex shape + // at increasing scales + static const int hex_num_candidates[MAX_PATTERN_SCALES] = { 8, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6 }; + // Note that the largest candidate step at each scale is 2^scale + /* clang-format off */ + static const MV hex_candidates[MAX_PATTERN_SCALES][MAX_PATTERN_CANDIDATES] = { + { { -1, -1 }, { 0, -1 }, { 1, -1 }, { 1, 0 }, { 1, 1 }, { 0, 1 }, { -1, 1 }, + { -1, 0 } }, + { { -1, -2 }, { 1, -2 }, { 2, 0 }, { 1, 2 }, { -1, 2 }, { -2, 0 } }, + { { -2, -4 }, { 2, -4 }, { 4, 0 }, { 2, 4 }, { -2, 4 }, { -4, 0 } }, + { { -4, -8 }, { 4, -8 }, { 8, 0 }, { 4, 8 }, { -4, 8 }, { -8, 0 } }, + { { -8, -16 }, { 8, -16 }, { 16, 0 }, { 8, 16 }, { -8, 16 }, { -16, 0 } }, + { { -16, -32 }, { 16, -32 }, { 32, 0 }, { 16, 32 }, { -16, 32 }, + { -32, 0 } }, + { { -32, -64 }, { 32, -64 }, { 64, 0 }, { 32, 64 }, { -32, 64 }, + { -64, 0 } }, + { { -64, -128 }, { 64, -128 }, { 128, 0 }, { 64, 128 }, { -64, 128 }, + { -128, 0 } }, + { { -128, -256 }, { 128, -256 }, { 256, 0 }, { 128, 256 }, { -128, 256 }, + { -256, 0 } }, + { { -256, -512 }, { 256, -512 }, { 512, 0 }, { 256, 512 }, { -256, 512 }, + { -512, 0 } }, + { { -512, -1024 }, { 512, -1024 }, { 1024, 0 }, { 512, 1024 }, + { -512, 1024 }, { -1024, 0 } }, + }; + /* clang-format on */ + return pattern_search(x, start_mv, search_param, sad_per_bit, do_init_search, + cost_list, vfp, use_mvcost, center_mv, + hex_num_candidates, hex_candidates); +} + +static int bigdia_search(MACROBLOCK *x, MV *start_mv, int search_param, + int sad_per_bit, int do_init_search, int *cost_list, + const aom_variance_fn_ptr_t *vfp, int use_mvcost, + const MV *center_mv) { + // First scale has 4-closest points, the rest have 8 points in diamond + // shape at increasing scales + static const int bigdia_num_candidates[MAX_PATTERN_SCALES] = { + 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + }; + // Note that the largest candidate step at each scale is 2^scale + /* clang-format off */ + static const MV + bigdia_candidates[MAX_PATTERN_SCALES][MAX_PATTERN_CANDIDATES] = { + { { 0, -1 }, { 1, 0 }, { 0, 1 }, { -1, 0 } }, + { { -1, -1 }, { 0, -2 }, { 1, -1 }, { 2, 0 }, { 1, 1 }, { 0, 2 }, + { -1, 1 }, { -2, 0 } }, + { { -2, -2 }, { 0, -4 }, { 2, -2 }, { 4, 0 }, { 2, 2 }, { 0, 4 }, + { -2, 2 }, { -4, 0 } }, + { { -4, -4 }, { 0, -8 }, { 4, -4 }, { 8, 0 }, { 4, 4 }, { 0, 8 }, + { -4, 4 }, { -8, 0 } }, + { { -8, -8 }, { 0, -16 }, { 8, -8 }, { 16, 0 }, { 8, 8 }, { 0, 16 }, + { -8, 8 }, { -16, 0 } }, + { { -16, -16 }, { 0, -32 }, { 16, -16 }, { 32, 0 }, { 16, 16 }, + { 0, 32 }, { -16, 16 }, { -32, 0 } }, + { { -32, -32 }, { 0, -64 }, { 32, -32 }, { 64, 0 }, { 32, 32 }, + { 0, 64 }, { -32, 32 }, { -64, 0 } }, + { { -64, -64 }, { 0, -128 }, { 64, -64 }, { 128, 0 }, { 64, 64 }, + { 0, 128 }, { -64, 64 }, { -128, 0 } }, + { { -128, -128 }, { 0, -256 }, { 128, -128 }, { 256, 0 }, { 128, 128 }, + { 0, 256 }, { -128, 128 }, { -256, 0 } }, + { { -256, -256 }, { 0, -512 }, { 256, -256 }, { 512, 0 }, { 256, 256 }, + { 0, 512 }, { -256, 256 }, { -512, 0 } }, + { { -512, -512 }, { 0, -1024 }, { 512, -512 }, { 1024, 0 }, + { 512, 512 }, { 0, 1024 }, { -512, 512 }, { -1024, 0 } }, + }; + /* clang-format on */ + return pattern_search(x, start_mv, search_param, sad_per_bit, do_init_search, + cost_list, vfp, use_mvcost, center_mv, + bigdia_num_candidates, bigdia_candidates); +} + +static int square_search(MACROBLOCK *x, MV *start_mv, int search_param, + int sad_per_bit, int do_init_search, int *cost_list, + const aom_variance_fn_ptr_t *vfp, int use_mvcost, + const MV *center_mv) { + // All scales have 8 closest points in square shape + static const int square_num_candidates[MAX_PATTERN_SCALES] = { + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + }; + // Note that the largest candidate step at each scale is 2^scale + /* clang-format off */ + static const MV + square_candidates[MAX_PATTERN_SCALES][MAX_PATTERN_CANDIDATES] = { + { { -1, -1 }, { 0, -1 }, { 1, -1 }, { 1, 0 }, { 1, 1 }, { 0, 1 }, + { -1, 1 }, { -1, 0 } }, + { { -2, -2 }, { 0, -2 }, { 2, -2 }, { 2, 0 }, { 2, 2 }, { 0, 2 }, + { -2, 2 }, { -2, 0 } }, + { { -4, -4 }, { 0, -4 }, { 4, -4 }, { 4, 0 }, { 4, 4 }, { 0, 4 }, + { -4, 4 }, { -4, 0 } }, + { { -8, -8 }, { 0, -8 }, { 8, -8 }, { 8, 0 }, { 8, 8 }, { 0, 8 }, + { -8, 8 }, { -8, 0 } }, + { { -16, -16 }, { 0, -16 }, { 16, -16 }, { 16, 0 }, { 16, 16 }, + { 0, 16 }, { -16, 16 }, { -16, 0 } }, + { { -32, -32 }, { 0, -32 }, { 32, -32 }, { 32, 0 }, { 32, 32 }, + { 0, 32 }, { -32, 32 }, { -32, 0 } }, + { { -64, -64 }, { 0, -64 }, { 64, -64 }, { 64, 0 }, { 64, 64 }, + { 0, 64 }, { -64, 64 }, { -64, 0 } }, + { { -128, -128 }, { 0, -128 }, { 128, -128 }, { 128, 0 }, { 128, 128 }, + { 0, 128 }, { -128, 128 }, { -128, 0 } }, + { { -256, -256 }, { 0, -256 }, { 256, -256 }, { 256, 0 }, { 256, 256 }, + { 0, 256 }, { -256, 256 }, { -256, 0 } }, + { { -512, -512 }, { 0, -512 }, { 512, -512 }, { 512, 0 }, { 512, 512 }, + { 0, 512 }, { -512, 512 }, { -512, 0 } }, + { { -1024, -1024 }, { 0, -1024 }, { 1024, -1024 }, { 1024, 0 }, + { 1024, 1024 }, { 0, 1024 }, { -1024, 1024 }, { -1024, 0 } }, + }; + /* clang-format on */ + return pattern_search(x, start_mv, search_param, sad_per_bit, do_init_search, + cost_list, vfp, use_mvcost, center_mv, + square_num_candidates, square_candidates); +} + +static int fast_hex_search(MACROBLOCK *x, MV *ref_mv, int search_param, + int sad_per_bit, + int do_init_search, // must be zero for fast_hex + int *cost_list, const aom_variance_fn_ptr_t *vfp, + int use_mvcost, const MV *center_mv) { + return av1_hex_search(x, ref_mv, AOMMAX(MAX_MVSEARCH_STEPS - 2, search_param), + sad_per_bit, do_init_search, cost_list, vfp, use_mvcost, + center_mv); +} + +static int fast_dia_search(MACROBLOCK *x, MV *ref_mv, int search_param, + int sad_per_bit, int do_init_search, int *cost_list, + const aom_variance_fn_ptr_t *vfp, int use_mvcost, + const MV *center_mv) { + return bigdia_search(x, ref_mv, AOMMAX(MAX_MVSEARCH_STEPS - 2, search_param), + sad_per_bit, do_init_search, cost_list, vfp, use_mvcost, + center_mv); +} + +#undef CHECK_BETTER + +// Exhuastive motion search around a given centre position with a given +// step size. +static int exhuastive_mesh_search(MACROBLOCK *x, MV *ref_mv, MV *best_mv, + int range, int step, int sad_per_bit, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *center_mv) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + MV fcenter_mv = { center_mv->row, center_mv->col }; + unsigned int best_sad = INT_MAX; + int r, c, i; + int start_col, end_col, start_row, end_row; + int col_step = (step > 1) ? step : 4; + + assert(step >= 1); + + clamp_mv(&fcenter_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + *best_mv = fcenter_mv; + best_sad = + fn_ptr->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &fcenter_mv), in_what->stride) + + mvsad_err_cost(x, &fcenter_mv, ref_mv, sad_per_bit); + start_row = AOMMAX(-range, x->mv_limits.row_min - fcenter_mv.row); + start_col = AOMMAX(-range, x->mv_limits.col_min - fcenter_mv.col); + end_row = AOMMIN(range, x->mv_limits.row_max - fcenter_mv.row); + end_col = AOMMIN(range, x->mv_limits.col_max - fcenter_mv.col); + + for (r = start_row; r <= end_row; r += step) { + for (c = start_col; c <= end_col; c += col_step) { + // Step > 1 means we are not checking every location in this pass. + if (step > 1) { + const MV mv = { fcenter_mv.row + r, fcenter_mv.col + c }; + unsigned int sad = + fn_ptr->sdf(what->buf, what->stride, get_buf_from_mv(in_what, &mv), + in_what->stride); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, ref_mv, sad_per_bit); + if (sad < best_sad) { + best_sad = sad; + x->second_best_mv.as_mv = *best_mv; + *best_mv = mv; + } + } + } else { + // 4 sads in a single call if we are checking every location + if (c + 3 <= end_col) { + unsigned int sads[4]; + const uint8_t *addrs[4]; + for (i = 0; i < 4; ++i) { + const MV mv = { fcenter_mv.row + r, fcenter_mv.col + c + i }; + addrs[i] = get_buf_from_mv(in_what, &mv); + } + fn_ptr->sdx4df(what->buf, what->stride, addrs, in_what->stride, sads); + + for (i = 0; i < 4; ++i) { + if (sads[i] < best_sad) { + const MV mv = { fcenter_mv.row + r, fcenter_mv.col + c + i }; + const unsigned int sad = + sads[i] + mvsad_err_cost(x, &mv, ref_mv, sad_per_bit); + if (sad < best_sad) { + best_sad = sad; + x->second_best_mv.as_mv = *best_mv; + *best_mv = mv; + } + } + } + } else { + for (i = 0; i < end_col - c; ++i) { + const MV mv = { fcenter_mv.row + r, fcenter_mv.col + c + i }; + unsigned int sad = + fn_ptr->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &mv), in_what->stride); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, ref_mv, sad_per_bit); + if (sad < best_sad) { + best_sad = sad; + x->second_best_mv.as_mv = *best_mv; + *best_mv = mv; + } + } + } + } + } + } + } + + return best_sad; +} + +int av1_diamond_search_sad_c(MACROBLOCK *x, const search_site_config *cfg, + MV *ref_mv, MV *best_mv, int search_param, + int sad_per_bit, int *num00, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *center_mv) { + int i, j, step; + + const MACROBLOCKD *const xd = &x->e_mbd; + uint8_t *what = x->plane[0].src.buf; + const int what_stride = x->plane[0].src.stride; + const uint8_t *in_what; + const int in_what_stride = xd->plane[0].pre[0].stride; + const uint8_t *best_address; + + unsigned int bestsad = INT_MAX; + int best_site = 0; + int last_site = 0; + + int ref_row; + int ref_col; + + // search_param determines the length of the initial step and hence the number + // of iterations. + // 0 = initial step (MAX_FIRST_STEP) pel + // 1 = (MAX_FIRST_STEP/2) pel, + // 2 = (MAX_FIRST_STEP/4) pel... + const search_site *ss = &cfg->ss[search_param * cfg->searches_per_step]; + const int tot_steps = (cfg->ss_count / cfg->searches_per_step) - search_param; + + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + clamp_mv(ref_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + ref_row = ref_mv->row; + ref_col = ref_mv->col; + *num00 = 0; + best_mv->row = ref_row; + best_mv->col = ref_col; + + // Work out the start point for the search + in_what = xd->plane[0].pre[0].buf + ref_row * in_what_stride + ref_col; + best_address = in_what; + + // Check the starting position + bestsad = fn_ptr->sdf(what, what_stride, in_what, in_what_stride) + + mvsad_err_cost(x, best_mv, &fcenter_mv, sad_per_bit); + + i = 1; + + for (step = 0; step < tot_steps; step++) { + int all_in = 1, t; + + // All_in is true if every one of the points we are checking are within + // the bounds of the image. + all_in &= ((best_mv->row + ss[i].mv.row) > x->mv_limits.row_min); + all_in &= ((best_mv->row + ss[i + 1].mv.row) < x->mv_limits.row_max); + all_in &= ((best_mv->col + ss[i + 2].mv.col) > x->mv_limits.col_min); + all_in &= ((best_mv->col + ss[i + 3].mv.col) < x->mv_limits.col_max); + + // If all the pixels are within the bounds we don't check whether the + // search point is valid in this loop, otherwise we check each point + // for validity.. + if (all_in) { + unsigned int sad_array[4]; + + for (j = 0; j < cfg->searches_per_step; j += 4) { + unsigned char const *block_offset[4]; + + for (t = 0; t < 4; t++) + block_offset[t] = ss[i + t].offset + best_address; + + fn_ptr->sdx4df(what, what_stride, block_offset, in_what_stride, + sad_array); + + for (t = 0; t < 4; t++, i++) { + if (sad_array[t] < bestsad) { + const MV this_mv = { best_mv->row + ss[i].mv.row, + best_mv->col + ss[i].mv.col }; + sad_array[t] += + mvsad_err_cost(x, &this_mv, &fcenter_mv, sad_per_bit); + if (sad_array[t] < bestsad) { + bestsad = sad_array[t]; + best_site = i; + } + } + } + } + } else { + for (j = 0; j < cfg->searches_per_step; j++) { + // Trap illegal vectors + const MV this_mv = { best_mv->row + ss[i].mv.row, + best_mv->col + ss[i].mv.col }; + + if (is_mv_in(&x->mv_limits, &this_mv)) { + const uint8_t *const check_here = ss[i].offset + best_address; + unsigned int thissad = + fn_ptr->sdf(what, what_stride, check_here, in_what_stride); + + if (thissad < bestsad) { + thissad += mvsad_err_cost(x, &this_mv, &fcenter_mv, sad_per_bit); + if (thissad < bestsad) { + bestsad = thissad; + best_site = i; + } + } + } + i++; + } + } + if (best_site != last_site) { + x->second_best_mv.as_mv = *best_mv; + best_mv->row += ss[best_site].mv.row; + best_mv->col += ss[best_site].mv.col; + best_address += ss[best_site].offset; + last_site = best_site; +#if defined(NEW_DIAMOND_SEARCH) + while (1) { + const MV this_mv = { best_mv->row + ss[best_site].mv.row, + best_mv->col + ss[best_site].mv.col }; + if (is_mv_in(&x->mv_limits, &this_mv)) { + const uint8_t *const check_here = ss[best_site].offset + best_address; + unsigned int thissad = + fn_ptr->sdf(what, what_stride, check_here, in_what_stride); + if (thissad < bestsad) { + thissad += mvsad_err_cost(x, &this_mv, &fcenter_mv, sad_per_bit); + if (thissad < bestsad) { + bestsad = thissad; + best_mv->row += ss[best_site].mv.row; + best_mv->col += ss[best_site].mv.col; + best_address += ss[best_site].offset; + continue; + } + } + } + break; + } +#endif + } else if (best_address == in_what) { + (*num00)++; + } + } + return bestsad; +} + +/* do_refine: If last step (1-away) of n-step search doesn't pick the center + point as the best match, we will do a final 1-away diamond + refining search */ +static int full_pixel_diamond(const AV1_COMP *const cpi, MACROBLOCK *x, + MV *mvp_full, int step_param, int sadpb, + int further_steps, int do_refine, int *cost_list, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *ref_mv) { + MV temp_mv; + int thissme, n, num00 = 0; + int bestsme = cpi->diamond_search_sad(x, &cpi->ss_cfg, mvp_full, &temp_mv, + step_param, sadpb, &n, fn_ptr, ref_mv); + if (bestsme < INT_MAX) + bestsme = av1_get_mvpred_var(x, &temp_mv, ref_mv, fn_ptr, 1); + x->best_mv.as_mv = temp_mv; + + // If there won't be more n-step search, check to see if refining search is + // needed. + if (n > further_steps) do_refine = 0; + + while (n < further_steps) { + ++n; + + if (num00) { + num00--; + } else { + thissme = cpi->diamond_search_sad(x, &cpi->ss_cfg, mvp_full, &temp_mv, + step_param + n, sadpb, &num00, fn_ptr, + ref_mv); + if (thissme < INT_MAX) + thissme = av1_get_mvpred_var(x, &temp_mv, ref_mv, fn_ptr, 1); + + // check to see if refining search is needed. + if (num00 > further_steps - n) do_refine = 0; + + if (thissme < bestsme) { + bestsme = thissme; + x->best_mv.as_mv = temp_mv; + } + } + } + + // final 1-away diamond refining search + if (do_refine) { + const int search_range = 8; + MV best_mv = x->best_mv.as_mv; + thissme = av1_refining_search_sad(x, &best_mv, sadpb, search_range, fn_ptr, + ref_mv); + if (thissme < INT_MAX) + thissme = av1_get_mvpred_var(x, &best_mv, ref_mv, fn_ptr, 1); + if (thissme < bestsme) { + bestsme = thissme; + x->best_mv.as_mv = best_mv; + } + } + + // Return cost list. + if (cost_list) { + calc_int_cost_list(x, ref_mv, sadpb, fn_ptr, &x->best_mv.as_mv, cost_list); + } + return bestsme; +} + +#define MIN_RANGE 7 +#define MAX_RANGE 256 +#define MIN_INTERVAL 1 +// Runs an limited range exhaustive mesh search using a pattern set +// according to the encode speed profile. +static int full_pixel_exhaustive(const AV1_COMP *const cpi, MACROBLOCK *x, + const MV *centre_mv_full, int sadpb, + int *cost_list, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *ref_mv, MV *dst_mv) { + const SPEED_FEATURES *const sf = &cpi->sf; + MV temp_mv = { centre_mv_full->row, centre_mv_full->col }; + MV f_ref_mv = { ref_mv->row >> 3, ref_mv->col >> 3 }; + int bestsme; + int i; + int interval = sf->mesh_patterns[0].interval; + int range = sf->mesh_patterns[0].range; + int baseline_interval_divisor; + + // Keep track of number of exhaustive calls (this frame in this thread). + ++(*x->ex_search_count_ptr); + + // Trap illegal values for interval and range for this function. + if ((range < MIN_RANGE) || (range > MAX_RANGE) || (interval < MIN_INTERVAL) || + (interval > range)) + return INT_MAX; + + baseline_interval_divisor = range / interval; + + // Check size of proposed first range against magnitude of the centre + // value used as a starting point. + range = AOMMAX(range, (5 * AOMMAX(abs(temp_mv.row), abs(temp_mv.col))) / 4); + range = AOMMIN(range, MAX_RANGE); + interval = AOMMAX(interval, range / baseline_interval_divisor); + + // initial search + bestsme = exhuastive_mesh_search(x, &f_ref_mv, &temp_mv, range, interval, + sadpb, fn_ptr, &temp_mv); + + if ((interval > MIN_INTERVAL) && (range > MIN_RANGE)) { + // Progressive searches with range and step size decreasing each time + // till we reach a step size of 1. Then break out. + for (i = 1; i < MAX_MESH_STEP; ++i) { + // First pass with coarser step and longer range + bestsme = exhuastive_mesh_search( + x, &f_ref_mv, &temp_mv, sf->mesh_patterns[i].range, + sf->mesh_patterns[i].interval, sadpb, fn_ptr, &temp_mv); + + if (sf->mesh_patterns[i].interval == 1) break; + } + } + + if (bestsme < INT_MAX) + bestsme = av1_get_mvpred_var(x, &temp_mv, ref_mv, fn_ptr, 1); + *dst_mv = temp_mv; + + // Return cost list. + if (cost_list) { + calc_int_cost_list(x, ref_mv, sadpb, fn_ptr, dst_mv, cost_list); + } + return bestsme; +} + +int av1_refining_search_sad(MACROBLOCK *x, MV *ref_mv, int error_per_bit, + int search_range, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *center_mv) { + const MACROBLOCKD *const xd = &x->e_mbd; + const MV neighbors[4] = { { -1, 0 }, { 0, -1 }, { 0, 1 }, { 1, 0 } }; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + const uint8_t *best_address = get_buf_from_mv(in_what, ref_mv); + unsigned int best_sad = + fn_ptr->sdf(what->buf, what->stride, best_address, in_what->stride) + + mvsad_err_cost(x, ref_mv, &fcenter_mv, error_per_bit); + int i, j; + + for (i = 0; i < search_range; i++) { + int best_site = -1; + const int all_in = ((ref_mv->row - 1) > x->mv_limits.row_min) & + ((ref_mv->row + 1) < x->mv_limits.row_max) & + ((ref_mv->col - 1) > x->mv_limits.col_min) & + ((ref_mv->col + 1) < x->mv_limits.col_max); + + if (all_in) { + unsigned int sads[4]; + const uint8_t *const positions[4] = { best_address - in_what->stride, + best_address - 1, best_address + 1, + best_address + in_what->stride }; + + fn_ptr->sdx4df(what->buf, what->stride, positions, in_what->stride, sads); + + for (j = 0; j < 4; ++j) { + if (sads[j] < best_sad) { + const MV mv = { ref_mv->row + neighbors[j].row, + ref_mv->col + neighbors[j].col }; + sads[j] += mvsad_err_cost(x, &mv, &fcenter_mv, error_per_bit); + if (sads[j] < best_sad) { + best_sad = sads[j]; + best_site = j; + } + } + } + } else { + for (j = 0; j < 4; ++j) { + const MV mv = { ref_mv->row + neighbors[j].row, + ref_mv->col + neighbors[j].col }; + + if (is_mv_in(&x->mv_limits, &mv)) { + unsigned int sad = + fn_ptr->sdf(what->buf, what->stride, + get_buf_from_mv(in_what, &mv), in_what->stride); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, &fcenter_mv, error_per_bit); + if (sad < best_sad) { + best_sad = sad; + best_site = j; + } + } + } + } + } + + if (best_site == -1) { + break; + } else { + x->second_best_mv.as_mv = *ref_mv; + ref_mv->row += neighbors[best_site].row; + ref_mv->col += neighbors[best_site].col; + best_address = get_buf_from_mv(in_what, ref_mv); + } + } + + return best_sad; +} + +// This function is called when we do joint motion search in comp_inter_inter +// mode, or when searching for one component of an ext-inter compound mode. +int av1_refining_search_8p_c(MACROBLOCK *x, int error_per_bit, int search_range, + const aom_variance_fn_ptr_t *fn_ptr, + const uint8_t *mask, int mask_stride, + int invert_mask, const MV *center_mv, + const uint8_t *second_pred) { + static const search_neighbors neighbors[8] = { + { { -1, 0 }, -1 * SEARCH_GRID_STRIDE_8P + 0 }, + { { 0, -1 }, 0 * SEARCH_GRID_STRIDE_8P - 1 }, + { { 0, 1 }, 0 * SEARCH_GRID_STRIDE_8P + 1 }, + { { 1, 0 }, 1 * SEARCH_GRID_STRIDE_8P + 0 }, + { { -1, -1 }, -1 * SEARCH_GRID_STRIDE_8P - 1 }, + { { 1, -1 }, 1 * SEARCH_GRID_STRIDE_8P - 1 }, + { { -1, 1 }, -1 * SEARCH_GRID_STRIDE_8P + 1 }, + { { 1, 1 }, 1 * SEARCH_GRID_STRIDE_8P + 1 } + }; + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const what = &x->plane[0].src; + const struct buf_2d *const in_what = &xd->plane[0].pre[0]; + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + MV *best_mv = &x->best_mv.as_mv; + unsigned int best_sad = INT_MAX; + int i, j; + uint8_t do_refine_search_grid[SEARCH_GRID_STRIDE_8P * SEARCH_GRID_STRIDE_8P] = + { 0 }; + int grid_center = SEARCH_GRID_CENTER_8P; + int grid_coord = grid_center; + + clamp_mv(best_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + if (mask) { + best_sad = fn_ptr->msdf(what->buf, what->stride, + get_buf_from_mv(in_what, best_mv), in_what->stride, + second_pred, mask, mask_stride, invert_mask) + + mvsad_err_cost(x, best_mv, &fcenter_mv, error_per_bit); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + best_sad = fn_ptr->jsdaf(what->buf, what->stride, + get_buf_from_mv(in_what, best_mv), + in_what->stride, second_pred, &xd->jcp_param) + + mvsad_err_cost(x, best_mv, &fcenter_mv, error_per_bit); + else + best_sad = fn_ptr->sdaf(what->buf, what->stride, + get_buf_from_mv(in_what, best_mv), + in_what->stride, second_pred) + + mvsad_err_cost(x, best_mv, &fcenter_mv, error_per_bit); + } + + do_refine_search_grid[grid_coord] = 1; + + for (i = 0; i < search_range; ++i) { + int best_site = -1; + + for (j = 0; j < 8; ++j) { + grid_coord = grid_center + neighbors[j].coord_offset; + if (do_refine_search_grid[grid_coord] == 1) { + continue; + } + const MV mv = { best_mv->row + neighbors[j].coord.row, + best_mv->col + neighbors[j].coord.col }; + + do_refine_search_grid[grid_coord] = 1; + if (is_mv_in(&x->mv_limits, &mv)) { + unsigned int sad; + if (mask) { + sad = fn_ptr->msdf(what->buf, what->stride, + get_buf_from_mv(in_what, &mv), in_what->stride, + second_pred, mask, mask_stride, invert_mask); + } else { + if (xd->jcp_param.use_jnt_comp_avg) + sad = fn_ptr->jsdaf(what->buf, what->stride, + get_buf_from_mv(in_what, &mv), in_what->stride, + second_pred, &xd->jcp_param); + else + sad = fn_ptr->sdaf(what->buf, what->stride, + get_buf_from_mv(in_what, &mv), in_what->stride, + second_pred); + } + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, &fcenter_mv, error_per_bit); + if (sad < best_sad) { + best_sad = sad; + best_site = j; + } + } + } + } + + if (best_site == -1) { + break; + } else { + best_mv->row += neighbors[best_site].coord.row; + best_mv->col += neighbors[best_site].coord.col; + grid_center += neighbors[best_site].coord_offset; + } + } + return best_sad; +} + +#define MIN_EX_SEARCH_LIMIT 128 +static int is_exhaustive_allowed(const AV1_COMP *const cpi, MACROBLOCK *x) { + const SPEED_FEATURES *const sf = &cpi->sf; + const int max_ex = + AOMMAX(MIN_EX_SEARCH_LIMIT, + (*x->m_search_count_ptr * sf->max_exaustive_pct) / 100); + + return sf->allow_exhaustive_searches && + (sf->exhaustive_searches_thresh < INT_MAX) && + (*x->ex_search_count_ptr <= max_ex) && !cpi->rc.is_src_frame_alt_ref; +} + +int av1_full_pixel_search(const AV1_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bsize, + MV *mvp_full, int step_param, int method, + int run_mesh_search, int error_per_bit, + int *cost_list, const MV *ref_mv, int var_max, int rd, + int x_pos, int y_pos, int intra) { + const SPEED_FEATURES *const sf = &cpi->sf; + const aom_variance_fn_ptr_t *fn_ptr = &cpi->fn_ptr[bsize]; + int var = 0; + + if (cost_list) { + cost_list[0] = INT_MAX; + cost_list[1] = INT_MAX; + cost_list[2] = INT_MAX; + cost_list[3] = INT_MAX; + cost_list[4] = INT_MAX; + } + + // Keep track of number of searches (this frame in this thread). + ++(*x->m_search_count_ptr); + + switch (method) { + case FAST_DIAMOND: + var = fast_dia_search(x, mvp_full, step_param, error_per_bit, 0, + cost_list, fn_ptr, 1, ref_mv); + break; + case FAST_HEX: + var = fast_hex_search(x, mvp_full, step_param, error_per_bit, 0, + cost_list, fn_ptr, 1, ref_mv); + break; + case HEX: + var = av1_hex_search(x, mvp_full, step_param, error_per_bit, 1, cost_list, + fn_ptr, 1, ref_mv); + break; + case SQUARE: + var = square_search(x, mvp_full, step_param, error_per_bit, 1, cost_list, + fn_ptr, 1, ref_mv); + break; + case BIGDIA: + var = bigdia_search(x, mvp_full, step_param, error_per_bit, 1, cost_list, + fn_ptr, 1, ref_mv); + break; + case NSTEP: + var = full_pixel_diamond(cpi, x, mvp_full, step_param, error_per_bit, + MAX_MVSEARCH_STEPS - 1 - step_param, 1, + cost_list, fn_ptr, ref_mv); + + // Should we allow a follow on exhaustive search? + if (is_exhaustive_allowed(cpi, x)) { + int exhuastive_thr = sf->exhaustive_searches_thresh; + exhuastive_thr >>= + 10 - (mi_size_wide_log2[bsize] + mi_size_high_log2[bsize]); + + // Threshold variance for an exhaustive full search. + if (var > exhuastive_thr) { + int var_ex; + MV tmp_mv_ex; + var_ex = + full_pixel_exhaustive(cpi, x, &x->best_mv.as_mv, error_per_bit, + cost_list, fn_ptr, ref_mv, &tmp_mv_ex); + + if (var_ex < var) { + var = var_ex; + x->best_mv.as_mv = tmp_mv_ex; + } + } + } + break; + default: assert(0 && "Invalid search method."); + } + + // Should we allow a follow on exhaustive search? + if (!run_mesh_search) { + if (method == NSTEP) { + if (is_exhaustive_allowed(cpi, x)) { + int exhuastive_thr = sf->exhaustive_searches_thresh; + exhuastive_thr >>= + 10 - (mi_size_wide_log2[bsize] + mi_size_high_log2[bsize]); + // Threshold variance for an exhaustive full search. + if (var > exhuastive_thr) run_mesh_search = 1; + } + } + } + + if (run_mesh_search) { + int var_ex; + MV tmp_mv_ex; + var_ex = full_pixel_exhaustive(cpi, x, &x->best_mv.as_mv, error_per_bit, + cost_list, fn_ptr, ref_mv, &tmp_mv_ex); + if (var_ex < var) { + var = var_ex; + x->best_mv.as_mv = tmp_mv_ex; + } + } + + if (method != NSTEP && rd && var < var_max) + var = av1_get_mvpred_var(x, &x->best_mv.as_mv, ref_mv, fn_ptr, 1); + + do { + if (!intra || !av1_use_hash_me(&cpi->common)) break; + + // already single ME + // get block size and original buffer of current block + const int block_height = block_size_high[bsize]; + const int block_width = block_size_wide[bsize]; + if (block_height == block_width && x_pos >= 0 && y_pos >= 0) { + if (block_width == 4 || block_width == 8 || block_width == 16 || + block_width == 32 || block_width == 64 || block_width == 128) { + uint8_t *what = x->plane[0].src.buf; + const int what_stride = x->plane[0].src.stride; + uint32_t hash_value1, hash_value2; + MV best_hash_mv; + int best_hash_cost = INT_MAX; + + // for the hashMap + hash_table *ref_frame_hash = + intra + ? &cpi->common.cur_frame->hash_table + : av1_get_ref_frame_hash_map(cpi, x->e_mbd.mi[0]->ref_frame[0]); + + av1_get_block_hash_value( + what, what_stride, block_width, &hash_value1, &hash_value2, + x->e_mbd.cur_buf->flags & YV12_FLAG_HIGHBITDEPTH, x); + + const int count = av1_hash_table_count(ref_frame_hash, hash_value1); + // for intra, at lest one matching can be found, itself. + if (count <= (intra ? 1 : 0)) { + break; + } + + Iterator iterator = + av1_hash_get_first_iterator(ref_frame_hash, hash_value1); + for (int i = 0; i < count; i++, iterator_increment(&iterator)) { + block_hash ref_block_hash = *(block_hash *)(iterator_get(&iterator)); + if (hash_value2 == ref_block_hash.hash_value2) { + // For intra, make sure the prediction is from valid area. + if (intra) { + const int mi_col = x_pos / MI_SIZE; + const int mi_row = y_pos / MI_SIZE; + const MV dv = { 8 * (ref_block_hash.y - y_pos), + 8 * (ref_block_hash.x - x_pos) }; + if (!av1_is_dv_valid(dv, &cpi->common, &x->e_mbd, mi_row, mi_col, + bsize, cpi->common.seq_params.mib_size_log2)) + continue; + } + MV hash_mv; + hash_mv.col = ref_block_hash.x - x_pos; + hash_mv.row = ref_block_hash.y - y_pos; + if (!is_mv_in(&x->mv_limits, &hash_mv)) continue; + const int refCost = + av1_get_mvpred_var(x, &hash_mv, ref_mv, fn_ptr, 1); + if (refCost < best_hash_cost) { + best_hash_cost = refCost; + best_hash_mv = hash_mv; + } + } + } + if (best_hash_cost < var) { + x->second_best_mv = x->best_mv; + x->best_mv.as_mv = best_hash_mv; + var = best_hash_cost; + } + } + } + } while (0); + + return var; +} + +/* returns subpixel variance error function */ +#define DIST(r, c) \ + vfp->osvf(pre(y, y_stride, r, c), y_stride, sp(c), sp(r), z, mask, &sse) + +/* checks if (r, c) has better score than previous best */ +#define MVC(r, c) \ + (unsigned int)(mvcost \ + ? ((mvjcost[((r) != rr) * 2 + ((c) != rc)] + \ + mvcost[0][((r)-rr)] + (int64_t)mvcost[1][((c)-rc)]) * \ + error_per_bit + \ + 4096) >> \ + 13 \ + : 0) + +#define CHECK_BETTER(v, r, c) \ + if (c >= minc && c <= maxc && r >= minr && r <= maxr) { \ + thismse = (DIST(r, c)); \ + if ((v = MVC(r, c) + thismse) < besterr) { \ + besterr = v; \ + br = r; \ + bc = c; \ + *distortion = thismse; \ + *sse1 = sse; \ + } \ + } else { \ + v = INT_MAX; \ + } + +#undef CHECK_BETTER0 +#define CHECK_BETTER0(v, r, c) CHECK_BETTER(v, r, c) + +#undef CHECK_BETTER1 +#define CHECK_BETTER1(v, r, c) \ + if (c >= minc && c <= maxc && r >= minr && r <= maxr) { \ + MV this_mv = { r, c }; \ + thismse = upsampled_obmc_pref_error(xd, cm, mi_row, mi_col, &this_mv, \ + mask, vfp, z, pre(y, y_stride, r, c), \ + y_stride, sp(c), sp(r), w, h, &sse, \ + use_accurate_subpel_search); \ + if ((v = MVC(r, c) + thismse) < besterr) { \ + besterr = v; \ + br = r; \ + bc = c; \ + *distortion = thismse; \ + *sse1 = sse; \ + } \ + } else { \ + v = INT_MAX; \ + } + +static unsigned int setup_obmc_center_error( + const int32_t *mask, const MV *bestmv, const MV *ref_mv, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, const int32_t *const wsrc, + const uint8_t *const y, int y_stride, int offset, int *mvjcost, + int *mvcost[2], unsigned int *sse1, int *distortion) { + unsigned int besterr; + besterr = vfp->ovf(y + offset, y_stride, wsrc, mask, sse1); + *distortion = besterr; + besterr += mv_err_cost(bestmv, ref_mv, mvjcost, mvcost, error_per_bit); + return besterr; +} + +static int upsampled_obmc_pref_error( + MACROBLOCKD *xd, const AV1_COMMON *const cm, int mi_row, int mi_col, + const MV *const mv, const int32_t *mask, const aom_variance_fn_ptr_t *vfp, + const int32_t *const wsrc, const uint8_t *const y, int y_stride, + int subpel_x_q3, int subpel_y_q3, int w, int h, unsigned int *sse, + int subpel_search) { + unsigned int besterr; + + DECLARE_ALIGNED(16, uint8_t, pred[2 * MAX_SB_SQUARE]); + if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { + uint8_t *pred8 = CONVERT_TO_BYTEPTR(pred); + aom_highbd_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred8, w, h, + subpel_x_q3, subpel_y_q3, y, y_stride, xd->bd, + subpel_search); + besterr = vfp->ovf(pred8, w, wsrc, mask, sse); + } else { + aom_upsampled_pred(xd, cm, mi_row, mi_col, mv, pred, w, h, subpel_x_q3, + subpel_y_q3, y, y_stride, subpel_search); + + besterr = vfp->ovf(pred, w, wsrc, mask, sse); + } + return besterr; +} + +static unsigned int upsampled_setup_obmc_center_error( + MACROBLOCKD *xd, const AV1_COMMON *const cm, int mi_row, int mi_col, + const int32_t *mask, const MV *bestmv, const MV *ref_mv, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, const int32_t *const wsrc, + const uint8_t *const y, int y_stride, int w, int h, int offset, + int *mvjcost, int *mvcost[2], unsigned int *sse1, int *distortion, + int subpel_search) { + unsigned int besterr = upsampled_obmc_pref_error( + xd, cm, mi_row, mi_col, bestmv, mask, vfp, wsrc, y + offset, y_stride, 0, + 0, w, h, sse1, subpel_search); + *distortion = besterr; + besterr += mv_err_cost(bestmv, ref_mv, mvjcost, mvcost, error_per_bit); + return besterr; +} + +int av1_find_best_obmc_sub_pixel_tree_up( + MACROBLOCK *x, const AV1_COMMON *const cm, int mi_row, int mi_col, + MV *bestmv, const MV *ref_mv, int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, int forced_stop, int iters_per_step, + int *mvjcost, int *mvcost[2], int *distortion, unsigned int *sse1, + int is_second, int use_accurate_subpel_search) { + const int32_t *wsrc = x->wsrc_buf; + const int32_t *mask = x->mask_buf; + const int *const z = wsrc; + const int *const src_address = z; + MACROBLOCKD *xd = &x->e_mbd; + struct macroblockd_plane *const pd = &xd->plane[0]; + MB_MODE_INFO *mbmi = xd->mi[0]; + unsigned int besterr = INT_MAX; + unsigned int sse; + unsigned int thismse; + + int rr = ref_mv->row; + int rc = ref_mv->col; + int br = bestmv->row * 8; + int bc = bestmv->col * 8; + int hstep = 4; + int iter; + int round = 3 - forced_stop; + int tr = br; + int tc = bc; + const MV *search_step = search_step_table; + int idx, best_idx = -1; + unsigned int cost_array[5]; + int kr, kc; + const int w = block_size_wide[mbmi->sb_type]; + const int h = block_size_high[mbmi->sb_type]; + int offset; + int y_stride; + const uint8_t *y; + + int minc, maxc, minr, maxr; + + set_subpel_mv_search_range(&x->mv_limits, &minc, &maxc, &minr, &maxr, ref_mv); + + y = pd->pre[is_second].buf; + y_stride = pd->pre[is_second].stride; + offset = bestmv->row * y_stride + bestmv->col; + + if (!allow_hp) + if (round == 3) round = 2; + + bestmv->row *= 8; + bestmv->col *= 8; + // use_accurate_subpel_search can be 0 or 1 or 2 + if (use_accurate_subpel_search) + besterr = upsampled_setup_obmc_center_error( + xd, cm, mi_row, mi_col, mask, bestmv, ref_mv, error_per_bit, vfp, z, y, + y_stride, w, h, offset, mvjcost, mvcost, sse1, distortion, + use_accurate_subpel_search); + else + besterr = setup_obmc_center_error(mask, bestmv, ref_mv, error_per_bit, vfp, + z, y, y_stride, offset, mvjcost, mvcost, + sse1, distortion); + + for (iter = 0; iter < round; ++iter) { + // Check vertical and horizontal sub-pixel positions. + for (idx = 0; idx < 4; ++idx) { + tr = br + search_step[idx].row; + tc = bc + search_step[idx].col; + if (tc >= minc && tc <= maxc && tr >= minr && tr <= maxr) { + MV this_mv = { tr, tc }; + if (use_accurate_subpel_search) { + thismse = upsampled_obmc_pref_error( + xd, cm, mi_row, mi_col, &this_mv, mask, vfp, src_address, + pre(y, y_stride, tr, tc), y_stride, sp(tc), sp(tr), w, h, &sse, + use_accurate_subpel_search); + } else { + thismse = vfp->osvf(pre(y, y_stride, tr, tc), y_stride, sp(tc), + sp(tr), src_address, mask, &sse); + } + + cost_array[idx] = thismse + mv_err_cost(&this_mv, ref_mv, mvjcost, + mvcost, error_per_bit); + if (cost_array[idx] < besterr) { + best_idx = idx; + besterr = cost_array[idx]; + *distortion = thismse; + *sse1 = sse; + } + } else { + cost_array[idx] = INT_MAX; + } + } + + // Check diagonal sub-pixel position + kc = (cost_array[0] <= cost_array[1] ? -hstep : hstep); + kr = (cost_array[2] <= cost_array[3] ? -hstep : hstep); + + tc = bc + kc; + tr = br + kr; + if (tc >= minc && tc <= maxc && tr >= minr && tr <= maxr) { + MV this_mv = { tr, tc }; + + if (use_accurate_subpel_search) { + thismse = upsampled_obmc_pref_error( + xd, cm, mi_row, mi_col, &this_mv, mask, vfp, src_address, + pre(y, y_stride, tr, tc), y_stride, sp(tc), sp(tr), w, h, &sse, + use_accurate_subpel_search); + } else { + thismse = vfp->osvf(pre(y, y_stride, tr, tc), y_stride, sp(tc), sp(tr), + src_address, mask, &sse); + } + + cost_array[4] = thismse + mv_err_cost(&this_mv, ref_mv, mvjcost, mvcost, + error_per_bit); + + if (cost_array[4] < besterr) { + best_idx = 4; + besterr = cost_array[4]; + *distortion = thismse; + *sse1 = sse; + } + } else { + cost_array[idx] = INT_MAX; + } + + if (best_idx < 4 && best_idx >= 0) { + br += search_step[best_idx].row; + bc += search_step[best_idx].col; + } else if (best_idx == 4) { + br = tr; + bc = tc; + } + + if (iters_per_step > 1 && best_idx != -1) { + if (use_accurate_subpel_search) { + SECOND_LEVEL_CHECKS_BEST(1); + } else { + SECOND_LEVEL_CHECKS_BEST(0); + } + } + + tr = br; + tc = bc; + + search_step += 4; + hstep >>= 1; + best_idx = -1; + } + + // These lines insure static analysis doesn't warn that + // tr and tc aren't used after the above point. + (void)tr; + (void)tc; + + bestmv->row = br; + bestmv->col = bc; + + return besterr; +} + +#undef DIST +#undef MVC +#undef CHECK_BETTER + +static int get_obmc_mvpred_var(const MACROBLOCK *x, const int32_t *wsrc, + const int32_t *mask, const MV *best_mv, + const MV *center_mv, + const aom_variance_fn_ptr_t *vfp, int use_mvcost, + int is_second) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const in_what = &xd->plane[0].pre[is_second]; + const MV mv = { best_mv->row * 8, best_mv->col * 8 }; + unsigned int unused; + + return vfp->ovf(get_buf_from_mv(in_what, best_mv), in_what->stride, wsrc, + mask, &unused) + + (use_mvcost ? mv_err_cost(&mv, center_mv, x->nmvjointcost, x->mvcost, + x->errorperbit) + : 0); +} + +int obmc_refining_search_sad(const MACROBLOCK *x, const int32_t *wsrc, + const int32_t *mask, MV *ref_mv, int error_per_bit, + int search_range, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *center_mv, int is_second) { + const MV neighbors[4] = { { -1, 0 }, { 0, -1 }, { 0, 1 }, { 1, 0 } }; + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const in_what = &xd->plane[0].pre[is_second]; + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + unsigned int best_sad = fn_ptr->osdf(get_buf_from_mv(in_what, ref_mv), + in_what->stride, wsrc, mask) + + mvsad_err_cost(x, ref_mv, &fcenter_mv, error_per_bit); + int i, j; + + for (i = 0; i < search_range; i++) { + int best_site = -1; + + for (j = 0; j < 4; j++) { + const MV mv = { ref_mv->row + neighbors[j].row, + ref_mv->col + neighbors[j].col }; + if (is_mv_in(&x->mv_limits, &mv)) { + unsigned int sad = fn_ptr->osdf(get_buf_from_mv(in_what, &mv), + in_what->stride, wsrc, mask); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, &fcenter_mv, error_per_bit); + if (sad < best_sad) { + best_sad = sad; + best_site = j; + } + } + } + } + + if (best_site == -1) { + break; + } else { + ref_mv->row += neighbors[best_site].row; + ref_mv->col += neighbors[best_site].col; + } + } + return best_sad; +} + +int obmc_diamond_search_sad(const MACROBLOCK *x, const search_site_config *cfg, + const int32_t *wsrc, const int32_t *mask, + MV *ref_mv, MV *best_mv, int search_param, + int sad_per_bit, int *num00, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *center_mv, int is_second) { + const MACROBLOCKD *const xd = &x->e_mbd; + const struct buf_2d *const in_what = &xd->plane[0].pre[is_second]; + // search_param determines the length of the initial step and hence the number + // of iterations + // 0 = initial step (MAX_FIRST_STEP) pel : 1 = (MAX_FIRST_STEP/2) pel, 2 = + // (MAX_FIRST_STEP/4) pel... etc. + const search_site *const ss = &cfg->ss[search_param * cfg->searches_per_step]; + const int tot_steps = (cfg->ss_count / cfg->searches_per_step) - search_param; + const MV fcenter_mv = { center_mv->row >> 3, center_mv->col >> 3 }; + const uint8_t *best_address, *in_what_ref; + int best_sad = INT_MAX; + int best_site = 0; + int last_site = 0; + int i, j, step; + + clamp_mv(ref_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + in_what_ref = in_what->buf + ref_mv->row * in_what->stride + ref_mv->col; + best_address = in_what_ref; + *num00 = 0; + *best_mv = *ref_mv; + + // Check the starting position + best_sad = fn_ptr->osdf(best_address, in_what->stride, wsrc, mask) + + mvsad_err_cost(x, best_mv, &fcenter_mv, sad_per_bit); + + i = 1; + + for (step = 0; step < tot_steps; step++) { + for (j = 0; j < cfg->searches_per_step; j++) { + const MV mv = { best_mv->row + ss[i].mv.row, + best_mv->col + ss[i].mv.col }; + if (is_mv_in(&x->mv_limits, &mv)) { + int sad = fn_ptr->osdf(best_address + ss[i].offset, in_what->stride, + wsrc, mask); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &mv, &fcenter_mv, sad_per_bit); + if (sad < best_sad) { + best_sad = sad; + best_site = i; + } + } + } + + i++; + } + + if (best_site != last_site) { + best_mv->row += ss[best_site].mv.row; + best_mv->col += ss[best_site].mv.col; + best_address += ss[best_site].offset; + last_site = best_site; +#if defined(NEW_DIAMOND_SEARCH) + while (1) { + const MV this_mv = { best_mv->row + ss[best_site].mv.row, + best_mv->col + ss[best_site].mv.col }; + if (is_mv_in(&x->mv_limits, &this_mv)) { + int sad = fn_ptr->osdf(best_address + ss[best_site].offset, + in_what->stride, wsrc, mask); + if (sad < best_sad) { + sad += mvsad_err_cost(x, &this_mv, &fcenter_mv, sad_per_bit); + if (sad < best_sad) { + best_sad = sad; + best_mv->row += ss[best_site].mv.row; + best_mv->col += ss[best_site].mv.col; + best_address += ss[best_site].offset; + continue; + } + } + } + break; + } +#endif + } else if (best_address == in_what_ref) { + (*num00)++; + } + } + return best_sad; +} + +static int obmc_full_pixel_diamond(const AV1_COMP *cpi, MACROBLOCK *x, + MV *mvp_full, int step_param, int sadpb, + int further_steps, int do_refine, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *ref_mv, MV *dst_mv, + int is_second) { + const int32_t *wsrc = x->wsrc_buf; + const int32_t *mask = x->mask_buf; + MV temp_mv; + int thissme, n, num00 = 0; + int bestsme = + obmc_diamond_search_sad(x, &cpi->ss_cfg, wsrc, mask, mvp_full, &temp_mv, + step_param, sadpb, &n, fn_ptr, ref_mv, is_second); + if (bestsme < INT_MAX) + bestsme = get_obmc_mvpred_var(x, wsrc, mask, &temp_mv, ref_mv, fn_ptr, 1, + is_second); + *dst_mv = temp_mv; + + // If there won't be more n-step search, check to see if refining search is + // needed. + if (n > further_steps) do_refine = 0; + + while (n < further_steps) { + ++n; + + if (num00) { + num00--; + } else { + thissme = obmc_diamond_search_sad(x, &cpi->ss_cfg, wsrc, mask, mvp_full, + &temp_mv, step_param + n, sadpb, &num00, + fn_ptr, ref_mv, is_second); + if (thissme < INT_MAX) + thissme = get_obmc_mvpred_var(x, wsrc, mask, &temp_mv, ref_mv, fn_ptr, + 1, is_second); + + // check to see if refining search is needed. + if (num00 > further_steps - n) do_refine = 0; + + if (thissme < bestsme) { + bestsme = thissme; + *dst_mv = temp_mv; + } + } + } + + // final 1-away diamond refining search + if (do_refine) { + const int search_range = 8; + MV best_mv = *dst_mv; + thissme = obmc_refining_search_sad(x, wsrc, mask, &best_mv, sadpb, + search_range, fn_ptr, ref_mv, is_second); + if (thissme < INT_MAX) + thissme = get_obmc_mvpred_var(x, wsrc, mask, &best_mv, ref_mv, fn_ptr, 1, + is_second); + if (thissme < bestsme) { + bestsme = thissme; + *dst_mv = best_mv; + } + } + return bestsme; +} + +int av1_obmc_full_pixel_search(const AV1_COMP *cpi, MACROBLOCK *x, MV *mvp_full, + int step_param, int sadpb, int further_steps, + int do_refine, + const aom_variance_fn_ptr_t *fn_ptr, + const MV *ref_mv, MV *dst_mv, int is_second) { + if (cpi->sf.obmc_full_pixel_search_level == 0) { + return obmc_full_pixel_diamond(cpi, x, mvp_full, step_param, sadpb, + further_steps, do_refine, fn_ptr, ref_mv, + dst_mv, is_second); + } else { + const int32_t *wsrc = x->wsrc_buf; + const int32_t *mask = x->mask_buf; + const int search_range = 8; + *dst_mv = *mvp_full; + clamp_mv(dst_mv, x->mv_limits.col_min, x->mv_limits.col_max, + x->mv_limits.row_min, x->mv_limits.row_max); + int thissme = obmc_refining_search_sad( + x, wsrc, mask, dst_mv, sadpb, search_range, fn_ptr, ref_mv, is_second); + if (thissme < INT_MAX) + thissme = get_obmc_mvpred_var(x, wsrc, mask, dst_mv, ref_mv, fn_ptr, 1, + is_second); + return thissme; + } +} + +// Note(yunqingwang): The following 2 functions are only used in the motion +// vector unit test, which return extreme motion vectors allowed by the MV +// limits. +#define COMMON_MV_TEST \ + SETUP_SUBPEL_SEARCH; \ + \ + (void)error_per_bit; \ + (void)vfp; \ + (void)src_address; \ + (void)src_stride; \ + (void)y; \ + (void)y_stride; \ + (void)second_pred; \ + (void)w; \ + (void)h; \ + (void)use_accurate_subpel_search; \ + (void)offset; \ + (void)mvjcost; \ + (void)mvcost; \ + (void)sse1; \ + (void)distortion; \ + \ + (void)halfiters; \ + (void)quarteriters; \ + (void)eighthiters; \ + (void)whichdir; \ + (void)forced_stop; \ + (void)hstep; \ + \ + (void)tr; \ + (void)tc; \ + (void)sse; \ + (void)thismse; \ + (void)cost_list; +// Return the maximum MV. +int av1_return_max_sub_pixel_mv(MACROBLOCK *x, const AV1_COMMON *const cm, + int mi_row, int mi_col, const MV *ref_mv, + int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, + int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], + int *distortion, unsigned int *sse1, + const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + COMMON_MV_TEST; + (void)mask; + (void)mask_stride; + (void)invert_mask; + (void)minr; + (void)minc; + + (void)cm; + (void)mi_row; + (void)mi_col; + + bestmv->row = maxr; + bestmv->col = maxc; + besterr = 0; + // In the sub-pel motion search, if hp is not used, then the last bit of mv + // has to be 0. + lower_mv_precision(bestmv, allow_hp, 0); + return besterr; +} +// Return the minimum MV. +int av1_return_min_sub_pixel_mv(MACROBLOCK *x, const AV1_COMMON *const cm, + int mi_row, int mi_col, const MV *ref_mv, + int allow_hp, int error_per_bit, + const aom_variance_fn_ptr_t *vfp, + int forced_stop, int iters_per_step, + int *cost_list, int *mvjcost, int *mvcost[2], + int *distortion, unsigned int *sse1, + const uint8_t *second_pred, const uint8_t *mask, + int mask_stride, int invert_mask, int w, int h, + int use_accurate_subpel_search) { + COMMON_MV_TEST; + (void)maxr; + (void)maxc; + (void)mask; + (void)mask_stride; + (void)invert_mask; + + (void)cm; + (void)mi_row; + (void)mi_col; + + bestmv->row = minr; + bestmv->col = minc; + besterr = 0; + // In the sub-pel motion search, if hp is not used, then the last bit of mv + // has to be 0. + lower_mv_precision(bestmv, allow_hp, 0); + return besterr; +} |