+++ /dev/null
-/*
- * Copyright (c) 2015 The WebM project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-#include <emmintrin.h>
-#include <smmintrin.h>
-
-#include "vpx_dsp/vpx_dsp_common.h"
-#include "vp9/encoder/vp9_encoder.h"
-#include "vpx_ports/mem.h"
-
-#ifdef __GNUC__
-# define __likely__(v) __builtin_expect(v, 1)
-# define __unlikely__(v) __builtin_expect(v, 0)
-#else
-# define __likely__(v) (v)
-# define __unlikely__(v) (v)
-#endif
-
-static INLINE MV_JOINT_TYPE get_mv_joint(const int_mv mv) {
- // This is simplified from the C implementation to utilise that
- // x->nmvjointsadcost[1] == x->nmvjointsadcost[2] and
- // x->nmvjointsadcost[1] == x->nmvjointsadcost[3]
- return mv.as_int == 0 ? 0 : 1;
-}
-
-static INLINE int mv_cost(const int_mv mv,
- const int *joint_cost, int *const comp_cost[2]) {
- return joint_cost[get_mv_joint(mv)] +
- comp_cost[0][mv.as_mv.row] + comp_cost[1][mv.as_mv.col];
-}
-
-static int mvsad_err_cost(const MACROBLOCK *x, const int_mv mv, const MV *ref,
- int error_per_bit) {
- const int_mv diff = { .as_mv={ mv.as_mv.row - ref->row,
- mv.as_mv.col - ref->col } };
- return ROUND_POWER_OF_TWO(mv_cost(diff, x->nmvjointsadcost,
- x->nmvsadcost) * error_per_bit, 8);
-}
-
-/*****************************************************************************
- * This function utilises 3 properties of the cost function lookup tables, *
- * constructed in using 'cal_nmvjointsadcost' and 'cal_nmvsadcosts' in *
- * vp9_encoder.c. *
- * For the joint cost: *
- * - mvjointsadcost[1] == mvjointsadcost[2] == mvjointsadcost[3] *
- * For the component costs: *
- * - For all i: mvsadcost[0][i] == mvsadcost[1][i] *
- * (Equal costs for both components) *
- * - For all i: mvsadcost[0][i] == mvsadcost[0][-i] *
- * (Cost function is even) *
- * If these do not hold, then this function cannot be used without *
- * modification, in which case you can revert to using the C implementation, *
- * which does not rely on these properties. *
- *****************************************************************************/
-int vp9_diamond_search_sad_avx(const MACROBLOCK *x,
- const search_site_config *cfg,
- MV *ref_mv, MV *best_mv, int search_param,
- int sad_per_bit, int *num00,
- const vp9_variance_fn_ptr_t *fn_ptr,
- const MV *center_mv) {
- const int_mv maxmv = { .as_mv={x->mv_row_max, x->mv_col_max} };
- const __m128i v_max_mv_w = _mm_set1_epi32(maxmv.as_int);
- const int_mv minmv = { .as_mv={x->mv_row_min, x->mv_col_min} };
- const __m128i v_min_mv_w = _mm_set1_epi32(minmv.as_int);
-
- const __m128i v_spb_d = _mm_set1_epi32(sad_per_bit);
-
- const __m128i v_joint_cost_0_d = _mm_set1_epi32(x->nmvjointsadcost[0]);
- const __m128i v_joint_cost_1_d = _mm_set1_epi32(x->nmvjointsadcost[1]);
-
- // 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 MV *ss_mv = &cfg->ss_mv[cfg->searches_per_step * search_param];
- const intptr_t *ss_os = &cfg->ss_os[cfg->searches_per_step * search_param];
- const int tot_steps = cfg->total_steps - search_param;
-
- const int_mv fcenter_mv = { .as_mv={center_mv->row >> 3,
- center_mv->col >> 3} };
- const __m128i vfcmv = _mm_set1_epi32(fcenter_mv.as_int);
-
- const int ref_row = clamp(ref_mv->row, minmv.as_mv.row, maxmv.as_mv.row);
- const int ref_col = clamp(ref_mv->col, minmv.as_mv.col, maxmv.as_mv.col);
-
- int_mv bmv = { .as_mv={ ref_row, ref_col} };
- int_mv new_bmv = bmv;
- __m128i v_bmv_w = _mm_set1_epi32(bmv.as_int);
-
- const int what_stride = x->plane[0].src.stride;
- const uint8_t * const what = x->plane[0].src.buf;
- const int in_what_stride = x->e_mbd.plane[0].pre[0].stride;
- const uint8_t * const in_what = x->e_mbd.plane[0].pre[0].buf +
- ref_row * in_what_stride + ref_col;
-
- // Work out the start point for the search
- const uint8_t *best_address = in_what;
- const uint8_t *new_best_address = best_address;
-#if ARCH_X86_64
- __m128i v_ba_q = _mm_set1_epi64x((intptr_t)best_address);
-#else
- __m128i v_ba_d = _mm_set1_epi32((intptr_t)best_address);
-#endif
-
- unsigned int best_sad;
-
- int i;
- int j;
- int step;
-
- // Check the starting position
- best_sad = fn_ptr->sdf(what, what_stride, in_what, in_what_stride);
- best_sad += mvsad_err_cost(x, bmv, &fcenter_mv.as_mv, sad_per_bit);
-
- *num00 = 0;
-
- for (i = 0, step = 0; step < tot_steps; step++) {
- for (j = 0; j < cfg->searches_per_step; j += 4, i += 4) {
- __m128i v_sad_d;
- __m128i v_cost_d;
- __m128i v_outside_d;
- __m128i v_inside_d;
- __m128i v_diff_mv_w;
-#if ARCH_X86_64
- __m128i v_blocka[2];
-#else
- __m128i v_blocka[1];
-#endif
-
- // Compute the candidate motion vectors
- const __m128i v_ss_mv_w = _mm_load_si128((const __m128i*)&ss_mv[i]);
- const __m128i v_these_mv_w = _mm_add_epi16(v_bmv_w, v_ss_mv_w);
- // Clamp them to the search bounds
- __m128i v_these_mv_clamp_w = v_these_mv_w;
- v_these_mv_clamp_w = _mm_min_epi16(v_these_mv_clamp_w, v_max_mv_w);
- v_these_mv_clamp_w = _mm_max_epi16(v_these_mv_clamp_w, v_min_mv_w);
- // The ones that did not change are inside the search area
- v_inside_d = _mm_cmpeq_epi32(v_these_mv_clamp_w, v_these_mv_w);
-
- // If none of them are inside, then move on
- if (__likely__(_mm_test_all_zeros(v_inside_d, v_inside_d))) {
- continue;
- }
-
- // The inverse mask indicates which of the MVs are outside
- v_outside_d = _mm_xor_si128(v_inside_d, _mm_set1_epi8(0xff));
- // Shift right to keep the sign bit clear, we will use this later
- // to set the cost to the maximum value.
- v_outside_d = _mm_srli_epi32(v_outside_d, 1);
-
- // Compute the difference MV
- v_diff_mv_w = _mm_sub_epi16(v_these_mv_clamp_w, vfcmv);
- // We utilise the fact that the cost function is even, and use the
- // absolute difference. This allows us to use unsigned indexes later
- // and reduces cache pressure somewhat as only a half of the table
- // is ever referenced.
- v_diff_mv_w = _mm_abs_epi16(v_diff_mv_w);
-
- // Compute the SIMD pointer offsets.
- {
-#if ARCH_X86_64 // sizeof(intptr_t) == 8
- // Load the offsets (could use _mm_maskload_ps here, instead of the
- // extra 'and' but it's slower that way)
- __m128i v_bo10_q = _mm_load_si128((const __m128i*)&ss_os[i+0]);
- __m128i v_bo32_q = _mm_load_si128((const __m128i*)&ss_os[i+2]);
- // Set the ones falling outside to zero
- v_bo10_q = _mm_and_si128(v_bo10_q,
- _mm_cvtepi32_epi64(v_inside_d));
- v_bo32_q = _mm_and_si128(v_bo32_q,
- _mm_unpackhi_epi32(v_inside_d, v_inside_d));
- // Compute the candidate addresses
- v_blocka[0] = _mm_add_epi64(v_ba_q, v_bo10_q);
- v_blocka[1] = _mm_add_epi64(v_ba_q, v_bo32_q);
-#else // ARCH_X86 // sizeof(intptr_t) == 4
- __m128i v_bo_d = _mm_load_si128((const __m128i*)&ss_os[i]);
- v_bo_d = _mm_and_si128(v_bo_d, v_inside_d);
- v_blocka[0] = _mm_add_epi32(v_ba_d, v_bo_d);
-#endif
- }
-
- fn_ptr->sdx4df(what, what_stride,
- (const uint8_t **)&v_blocka[0], in_what_stride,
- (uint32_t*)&v_sad_d);
-
- // Look up the component cost of the residual motion vector
- {
- const int32_t row0 = _mm_extract_epi16(v_diff_mv_w, 0);
- const int32_t col0 = _mm_extract_epi16(v_diff_mv_w, 1);
- const int32_t row1 = _mm_extract_epi16(v_diff_mv_w, 2);
- const int32_t col1 = _mm_extract_epi16(v_diff_mv_w, 3);
- const int32_t row2 = _mm_extract_epi16(v_diff_mv_w, 4);
- const int32_t col2 = _mm_extract_epi16(v_diff_mv_w, 5);
- const int32_t row3 = _mm_extract_epi16(v_diff_mv_w, 6);
- const int32_t col3 = _mm_extract_epi16(v_diff_mv_w, 7);
-
- // Note: This is a use case for vpgather in AVX2
- const uint32_t cost0 = x->nmvsadcost[0][row0] + x->nmvsadcost[0][col0];
- const uint32_t cost1 = x->nmvsadcost[0][row1] + x->nmvsadcost[0][col1];
- const uint32_t cost2 = x->nmvsadcost[0][row2] + x->nmvsadcost[0][col2];
- const uint32_t cost3 = x->nmvsadcost[0][row3] + x->nmvsadcost[0][col3];
-
- __m128i v_cost_10_d;
- __m128i v_cost_32_d;
-
- v_cost_10_d = _mm_cvtsi32_si128(cost0);
- v_cost_10_d = _mm_insert_epi32(v_cost_10_d, cost1, 1);
-
- v_cost_32_d = _mm_cvtsi32_si128(cost2);
- v_cost_32_d = _mm_insert_epi32(v_cost_32_d, cost3, 1);
-
- v_cost_d = _mm_unpacklo_epi64(v_cost_10_d, v_cost_32_d);
- }
-
- // Now add in the joint cost
- {
- const __m128i v_sel_d = _mm_cmpeq_epi32(v_diff_mv_w,
- _mm_setzero_si128());
- const __m128i v_joint_cost_d = _mm_blendv_epi8(v_joint_cost_1_d,
- v_joint_cost_0_d,
- v_sel_d);
- v_cost_d = _mm_add_epi32(v_cost_d, v_joint_cost_d);
- }
-
- // Multiply by sad_per_bit
- v_cost_d = _mm_mullo_epi32(v_cost_d, v_spb_d);
- // ROUND_POWER_OF_TWO(v_cost_d, 8)
- v_cost_d = _mm_add_epi32(v_cost_d, _mm_set1_epi32(0x80));
- v_cost_d = _mm_srai_epi32(v_cost_d, 8);
- // Add the cost to the sad
- v_sad_d = _mm_add_epi32(v_sad_d, v_cost_d);
-
- // Make the motion vectors outside the search area have max cost
- // by or'ing in the comparison mask, this way the minimum search won't
- // pick them.
- v_sad_d = _mm_or_si128(v_sad_d, v_outside_d);
-
- // Find the minimum value and index horizontally in v_sad_d
- {
- // Try speculatively on 16 bits, so we can use the minpos intrinsic
- const __m128i v_sad_w = _mm_packus_epi32(v_sad_d, v_sad_d);
- const __m128i v_minp_w = _mm_minpos_epu16(v_sad_w);
-
- uint32_t local_best_sad = _mm_extract_epi16(v_minp_w, 0);
- uint32_t local_best_idx = _mm_extract_epi16(v_minp_w, 1);
-
- // If the local best value is not saturated, just use it, otherwise
- // find the horizontal minimum again the hard way on 32 bits.
- // This is executed rarely.
- if (__unlikely__(local_best_sad == 0xffff)) {
- __m128i v_loval_d, v_hival_d, v_loidx_d, v_hiidx_d, v_sel_d;
-
- v_loval_d = v_sad_d;
- v_loidx_d = _mm_set_epi32(3, 2, 1, 0);
- v_hival_d = _mm_srli_si128(v_loval_d, 8);
- v_hiidx_d = _mm_srli_si128(v_loidx_d, 8);
-
- v_sel_d = _mm_cmplt_epi32(v_hival_d, v_loval_d);
-
- v_loval_d = _mm_blendv_epi8(v_loval_d, v_hival_d, v_sel_d);
- v_loidx_d = _mm_blendv_epi8(v_loidx_d, v_hiidx_d, v_sel_d);
- v_hival_d = _mm_srli_si128(v_loval_d, 4);
- v_hiidx_d = _mm_srli_si128(v_loidx_d, 4);
-
- v_sel_d = _mm_cmplt_epi32(v_hival_d, v_loval_d);
-
- v_loval_d = _mm_blendv_epi8(v_loval_d, v_hival_d, v_sel_d);
- v_loidx_d = _mm_blendv_epi8(v_loidx_d, v_hiidx_d, v_sel_d);
-
- local_best_sad = _mm_extract_epi32(v_loval_d, 0);
- local_best_idx = _mm_extract_epi32(v_loidx_d, 0);
- }
-
- // Update the global minimum if the local minimum is smaller
- if (__likely__(local_best_sad < best_sad)) {
- new_bmv = ((const int_mv *)&v_these_mv_w)[local_best_idx];
- new_best_address = ((const uint8_t **)v_blocka)[local_best_idx];
-
- best_sad = local_best_sad;
- }
- }
- }
-
- bmv = new_bmv;
- best_address = new_best_address;
-
- v_bmv_w = _mm_set1_epi32(bmv.as_int);
-#if ARCH_X86_64
- v_ba_q = _mm_set1_epi64x((intptr_t)best_address);
-#else
- v_ba_d = _mm_set1_epi32((intptr_t)best_address);
-#endif
-
- if (__unlikely__(best_address == in_what)) {
- (*num00)++;
- }
- }
-
- *best_mv = bmv.as_mv;
- return best_sad;
-}
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