| /* |
| * Copyright (c) 2017, 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 <immintrin.h> |
| |
| #include "config/av1_rtcd.h" |
| |
| #include "aom/aom_integer.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| static INLINE void read_coeff(const tran_low_t *coeff, __m256i *c) { |
| if (sizeof(tran_low_t) == 4) { |
| const __m256i x0 = _mm256_loadu_si256((const __m256i *)coeff); |
| const __m256i x1 = _mm256_loadu_si256((const __m256i *)coeff + 1); |
| *c = _mm256_packs_epi32(x0, x1); |
| *c = _mm256_permute4x64_epi64(*c, 0xD8); |
| } else { |
| *c = _mm256_loadu_si256((const __m256i *)coeff); |
| } |
| } |
| |
| static INLINE void write_zero(tran_low_t *qcoeff) { |
| const __m256i zero = _mm256_setzero_si256(); |
| if (sizeof(tran_low_t) == 4) { |
| _mm256_storeu_si256((__m256i *)qcoeff, zero); |
| _mm256_storeu_si256((__m256i *)qcoeff + 1, zero); |
| } else { |
| _mm256_storeu_si256((__m256i *)qcoeff, zero); |
| } |
| } |
| |
| static INLINE void init_one_qp(const __m128i *p, __m256i *qp) { |
| const __m128i ac = _mm_unpackhi_epi64(*p, *p); |
| *qp = _mm256_insertf128_si256(_mm256_castsi128_si256(*p), ac, 1); |
| } |
| |
| static INLINE void init_qp(const int16_t *round_ptr, const int16_t *quant_ptr, |
| const int16_t *dequant_ptr, int log_scale, |
| __m256i *thr, __m256i *qp) { |
| __m128i round = _mm_loadu_si128((const __m128i *)round_ptr); |
| const __m128i quant = _mm_loadu_si128((const __m128i *)quant_ptr); |
| const __m128i dequant = _mm_loadu_si128((const __m128i *)dequant_ptr); |
| |
| if (log_scale > 0) { |
| const __m128i rnd = _mm_set1_epi16((int16_t)1 << (log_scale - 1)); |
| round = _mm_add_epi16(round, rnd); |
| round = _mm_srai_epi16(round, log_scale); |
| } |
| |
| init_one_qp(&round, &qp[0]); |
| init_one_qp(&quant, &qp[1]); |
| |
| if (log_scale == 1) { |
| qp[1] = _mm256_slli_epi16(qp[1], log_scale); |
| } |
| |
| init_one_qp(&dequant, &qp[2]); |
| *thr = _mm256_srai_epi16(qp[2], 1 + log_scale); |
| } |
| |
| static INLINE void update_qp(int log_scale, __m256i *thr, __m256i *qp) { |
| qp[0] = _mm256_permute2x128_si256(qp[0], qp[0], 0x11); |
| qp[1] = _mm256_permute2x128_si256(qp[1], qp[1], 0x11); |
| qp[2] = _mm256_permute2x128_si256(qp[2], qp[2], 0x11); |
| *thr = _mm256_srai_epi16(qp[2], 1 + log_scale); |
| } |
| |
| #define store_quan(q, addr) \ |
| do { \ |
| __m256i sign_bits = _mm256_srai_epi16(q, 15); \ |
| __m256i y0 = _mm256_unpacklo_epi16(q, sign_bits); \ |
| __m256i y1 = _mm256_unpackhi_epi16(q, sign_bits); \ |
| __m256i x0 = _mm256_permute2x128_si256(y0, y1, 0x20); \ |
| __m256i x1 = _mm256_permute2x128_si256(y0, y1, 0x31); \ |
| _mm256_storeu_si256((__m256i *)addr, x0); \ |
| _mm256_storeu_si256((__m256i *)addr + 1, x1); \ |
| } while (0) |
| |
| #define store_two_quan(q, addr1, dq, addr2) \ |
| do { \ |
| if (sizeof(tran_low_t) == 4) { \ |
| store_quan(q, addr1); \ |
| store_quan(dq, addr2); \ |
| } else { \ |
| _mm256_storeu_si256((__m256i *)addr1, q); \ |
| _mm256_storeu_si256((__m256i *)addr2, dq); \ |
| } \ |
| } while (0) |
| |
| static INLINE __m256i load_coefficients_avx2(const tran_low_t *coeff_ptr) { |
| const __m256i coeff1 = _mm256_load_si256((__m256i *)coeff_ptr); |
| const __m256i coeff2 = _mm256_load_si256((__m256i *)(coeff_ptr + 8)); |
| return _mm256_packs_epi32(coeff1, coeff2); |
| } |
| |
| static INLINE void store_coefficients_avx2(__m256i coeff_vals, |
| tran_low_t *coeff_ptr) { |
| __m256i coeff_sign = _mm256_srai_epi16(coeff_vals, 15); |
| __m256i coeff_vals_lo = _mm256_unpacklo_epi16(coeff_vals, coeff_sign); |
| __m256i coeff_vals_hi = _mm256_unpackhi_epi16(coeff_vals, coeff_sign); |
| _mm256_store_si256((__m256i *)coeff_ptr, coeff_vals_lo); |
| _mm256_store_si256((__m256i *)(coeff_ptr + 8), coeff_vals_hi); |
| } |
| |
| static INLINE uint16_t quant_gather_eob(__m256i eob) { |
| const __m128i eob_lo = _mm256_castsi256_si128(eob); |
| const __m128i eob_hi = _mm256_extractf128_si256(eob, 1); |
| __m128i eob_s = _mm_max_epi16(eob_lo, eob_hi); |
| eob_s = _mm_subs_epu16(_mm_set1_epi16(INT16_MAX), eob_s); |
| eob_s = _mm_minpos_epu16(eob_s); |
| return INT16_MAX - _mm_extract_epi16(eob_s, 0); |
| } |
| |
| static INLINE __m256i scan_eob_256(const __m256i *iscan_ptr, |
| __m256i *coeff256) { |
| const __m256i iscan = _mm256_loadu_si256(iscan_ptr); |
| const __m256i zero256 = _mm256_setzero_si256(); |
| const __m256i zero_coeff0 = _mm256_cmpeq_epi16(*coeff256, zero256); |
| const __m256i nzero_coeff0 = _mm256_cmpeq_epi16(zero_coeff0, zero256); |
| // Add one to convert from indices to counts |
| const __m256i iscan_plus_one = _mm256_sub_epi16(iscan, nzero_coeff0); |
| return _mm256_and_si256(iscan_plus_one, nzero_coeff0); |
| } |
| |
| static INLINE int16_t accumulate_eob(__m128i eob) { |
| __m128i eob_shuffled; |
| eob_shuffled = _mm_shuffle_epi32(eob, 0xe); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| return _mm_extract_epi16(eob, 1); |
| } |
| |
| void av1_quantize_lp_avx2(const int16_t *coeff_ptr, intptr_t n_coeffs, |
| const int16_t *round_ptr, const int16_t *quant_ptr, |
| int16_t *qcoeff_ptr, int16_t *dqcoeff_ptr, |
| const int16_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| (void)scan; |
| __m128i eob; |
| __m256i round256, quant256, dequant256; |
| __m256i eob256; |
| |
| coeff_ptr += n_coeffs; |
| iscan += n_coeffs; |
| qcoeff_ptr += n_coeffs; |
| dqcoeff_ptr += n_coeffs; |
| n_coeffs = -n_coeffs; |
| |
| { |
| __m256i coeff256; |
| |
| // Setup global values |
| { |
| const __m128i round = _mm_load_si128((const __m128i *)round_ptr); |
| const __m128i quant = _mm_load_si128((const __m128i *)quant_ptr); |
| const __m128i dequant = _mm_load_si128((const __m128i *)dequant_ptr); |
| round256 = _mm256_castsi128_si256(round); |
| round256 = _mm256_permute4x64_epi64(round256, 0x54); |
| |
| quant256 = _mm256_castsi128_si256(quant); |
| quant256 = _mm256_permute4x64_epi64(quant256, 0x54); |
| |
| dequant256 = _mm256_castsi128_si256(dequant); |
| dequant256 = _mm256_permute4x64_epi64(dequant256, 0x54); |
| } |
| |
| { |
| __m256i qcoeff256; |
| __m256i qtmp256; |
| coeff256 = _mm256_loadu_si256((const __m256i *)(coeff_ptr + n_coeffs)); |
| qcoeff256 = _mm256_abs_epi16(coeff256); |
| qcoeff256 = _mm256_adds_epi16(qcoeff256, round256); |
| qtmp256 = _mm256_mulhi_epi16(qcoeff256, quant256); |
| qcoeff256 = _mm256_sign_epi16(qtmp256, coeff256); |
| _mm256_storeu_si256((__m256i *)(qcoeff_ptr + n_coeffs), qcoeff256); |
| coeff256 = _mm256_mullo_epi16(qcoeff256, dequant256); |
| _mm256_storeu_si256((__m256i *)(dqcoeff_ptr + n_coeffs), coeff256); |
| } |
| |
| eob256 = scan_eob_256((const __m256i *)(iscan + n_coeffs), &coeff256); |
| n_coeffs += 8 * 2; |
| } |
| |
| // remove dc constants |
| dequant256 = _mm256_permute2x128_si256(dequant256, dequant256, 0x31); |
| quant256 = _mm256_permute2x128_si256(quant256, quant256, 0x31); |
| round256 = _mm256_permute2x128_si256(round256, round256, 0x31); |
| |
| // AC only loop |
| while (n_coeffs < 0) { |
| __m256i coeff256 = |
| _mm256_loadu_si256((const __m256i *)(coeff_ptr + n_coeffs)); |
| __m256i qcoeff256 = _mm256_abs_epi16(coeff256); |
| |
| __m256i qtmp256; |
| qcoeff256 = _mm256_adds_epi16(qcoeff256, round256); |
| qtmp256 = _mm256_mulhi_epi16(qcoeff256, quant256); |
| qcoeff256 = _mm256_sign_epi16(qtmp256, coeff256); |
| _mm256_storeu_si256((__m256i *)(qcoeff_ptr + n_coeffs), qcoeff256); |
| coeff256 = _mm256_mullo_epi16(qcoeff256, dequant256); |
| _mm256_storeu_si256((__m256i *)(dqcoeff_ptr + n_coeffs), coeff256); |
| eob256 = _mm256_max_epi16( |
| eob256, scan_eob_256((const __m256i *)(iscan + n_coeffs), &coeff256)); |
| |
| n_coeffs += 8 * 2; |
| } |
| |
| eob = _mm_max_epi16(_mm256_castsi256_si128(eob256), |
| _mm256_extracti128_si256(eob256, 1)); |
| |
| *eob_ptr = accumulate_eob(eob); |
| } |
| |
| static AOM_FORCE_INLINE __m256i get_max_lane_eob(const int16_t *iscan, |
| __m256i v_eobmax, |
| __m256i v_mask) { |
| const __m256i v_iscan = _mm256_loadu_si256((const __m256i *)iscan); |
| const __m256i v_iscan_perm = _mm256_permute4x64_epi64(v_iscan, 0xD8); |
| const __m256i v_iscan_plus1 = _mm256_sub_epi16(v_iscan_perm, v_mask); |
| const __m256i v_nz_iscan = _mm256_and_si256(v_iscan_plus1, v_mask); |
| return _mm256_max_epi16(v_eobmax, v_nz_iscan); |
| } |
| |
| static AOM_FORCE_INLINE void quantize_fp_16( |
| const __m256i *thr, const __m256i *qp, const tran_low_t *coeff_ptr, |
| const int16_t *iscan_ptr, tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, |
| __m256i *eob) { |
| const __m256i coeff = load_coefficients_avx2(coeff_ptr); |
| const __m256i abs_coeff = _mm256_abs_epi16(coeff); |
| const __m256i mask = _mm256_cmpgt_epi16(abs_coeff, *thr); |
| const int nzflag = _mm256_movemask_epi8(mask); |
| |
| if (nzflag) { |
| const __m256i tmp_rnd = _mm256_adds_epi16(abs_coeff, qp[0]); |
| const __m256i abs_q = _mm256_mulhi_epi16(tmp_rnd, qp[1]); |
| const __m256i q = _mm256_sign_epi16(abs_q, coeff); |
| const __m256i dq = _mm256_mullo_epi16(q, qp[2]); |
| const __m256i nz_mask = _mm256_cmpgt_epi16(abs_q, _mm256_setzero_si256()); |
| |
| store_coefficients_avx2(q, qcoeff_ptr); |
| store_coefficients_avx2(dq, dqcoeff_ptr); |
| |
| *eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask); |
| } else { |
| write_zero(qcoeff_ptr); |
| write_zero(dqcoeff_ptr); |
| } |
| } |
| |
| void av1_quantize_fp_avx2(const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| const int16_t *zbin_ptr, const int16_t *round_ptr, |
| const int16_t *quant_ptr, |
| const int16_t *quant_shift_ptr, |
| tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, |
| const int16_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan_ptr, const int16_t *iscan_ptr) { |
| (void)scan_ptr; |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| |
| const int log_scale = 0; |
| const int step = 16; |
| __m256i qp[3], thr; |
| __m256i eob = _mm256_setzero_si256(); |
| |
| init_qp(round_ptr, quant_ptr, dequant_ptr, log_scale, &thr, qp); |
| // Subtracting 1 here eliminates a _mm256_cmpeq_epi16() instruction when |
| // calculating the zbin mask. |
| thr = _mm256_sub_epi16(thr, _mm256_set1_epi16(1)); |
| |
| quantize_fp_16(&thr, qp, coeff_ptr, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| |
| qp[0] = _mm256_permute2x128_si256(qp[0], qp[0], 0x11); |
| qp[1] = _mm256_permute2x128_si256(qp[1], qp[1], 0x11); |
| qp[2] = _mm256_permute2x128_si256(qp[2], qp[2], 0x11); |
| thr = _mm256_permute2x128_si256(thr, thr, 0x11); |
| |
| while (n_coeffs > 0) { |
| quantize_fp_16(&thr, qp, coeff_ptr, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, |
| &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| } |
| *eob_ptr = quant_gather_eob(eob); |
| } |
| |
| static INLINE void quantize_32x32(const __m256i *thr, const __m256i *qp, |
| __m256i *c, const int16_t *iscan_ptr, |
| tran_low_t *qcoeff, tran_low_t *dqcoeff, |
| __m256i *eob) { |
| const __m256i abs_coeff = _mm256_abs_epi16(*c); |
| __m256i mask = _mm256_cmpgt_epi16(abs_coeff, *thr); |
| mask = _mm256_or_si256(mask, _mm256_cmpeq_epi16(abs_coeff, *thr)); |
| const int nzflag = _mm256_movemask_epi8(mask); |
| |
| if (nzflag) { |
| __m256i q = _mm256_adds_epi16(abs_coeff, qp[0]); |
| q = _mm256_mulhi_epu16(q, qp[1]); |
| |
| __m256i dq = _mm256_mullo_epi16(q, qp[2]); |
| dq = _mm256_srli_epi16(dq, 1); |
| |
| q = _mm256_sign_epi16(q, *c); |
| dq = _mm256_sign_epi16(dq, *c); |
| |
| store_two_quan(q, qcoeff, dq, dqcoeff); |
| const __m256i zero = _mm256_setzero_si256(); |
| const __m256i iscan = _mm256_loadu_si256((const __m256i *)iscan_ptr); |
| const __m256i zero_coeff = _mm256_cmpeq_epi16(dq, zero); |
| const __m256i nzero_coeff = _mm256_cmpeq_epi16(zero_coeff, zero); |
| __m256i cur_eob = _mm256_sub_epi16(iscan, nzero_coeff); |
| cur_eob = _mm256_and_si256(cur_eob, nzero_coeff); |
| *eob = _mm256_max_epi16(*eob, cur_eob); |
| } else { |
| write_zero(qcoeff); |
| write_zero(dqcoeff); |
| } |
| } |
| |
| void av1_quantize_fp_32x32_avx2( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int16_t *zbin_ptr, |
| const int16_t *round_ptr, const int16_t *quant_ptr, |
| const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan_ptr, const int16_t *iscan_ptr) { |
| (void)scan_ptr; |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| const unsigned int step = 16; |
| |
| __m256i qp[3]; |
| __m256i coeff, thr; |
| const int log_scale = 1; |
| |
| init_qp(round_ptr, quant_ptr, dequant_ptr, log_scale, &thr, qp); |
| read_coeff(coeff_ptr, &coeff); |
| |
| __m256i eob = _mm256_setzero_si256(); |
| quantize_32x32(&thr, qp, &coeff, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| |
| update_qp(log_scale, &thr, qp); |
| |
| while (n_coeffs > 0) { |
| read_coeff(coeff_ptr, &coeff); |
| quantize_32x32(&thr, qp, &coeff, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| } |
| *eob_ptr = quant_gather_eob(eob); |
| } |
| |
| static INLINE void quantize_64x64(const __m256i *thr, const __m256i *qp, |
| __m256i *c, const int16_t *iscan_ptr, |
| tran_low_t *qcoeff, tran_low_t *dqcoeff, |
| __m256i *eob) { |
| const __m256i abs_coeff = _mm256_abs_epi16(*c); |
| __m256i mask = _mm256_cmpgt_epi16(abs_coeff, *thr); |
| mask = _mm256_or_si256(mask, _mm256_cmpeq_epi16(abs_coeff, *thr)); |
| const int nzflag = _mm256_movemask_epi8(mask); |
| |
| if (nzflag) { |
| __m256i q = _mm256_adds_epi16(abs_coeff, qp[0]); |
| __m256i qh = _mm256_mulhi_epi16(q, qp[1]); |
| __m256i ql = _mm256_mullo_epi16(q, qp[1]); |
| qh = _mm256_slli_epi16(qh, 2); |
| ql = _mm256_srli_epi16(ql, 14); |
| q = _mm256_or_si256(qh, ql); |
| const __m256i dqh = _mm256_slli_epi16(_mm256_mulhi_epi16(q, qp[2]), 14); |
| const __m256i dql = _mm256_srli_epi16(_mm256_mullo_epi16(q, qp[2]), 2); |
| __m256i dq = _mm256_or_si256(dqh, dql); |
| |
| q = _mm256_sign_epi16(q, *c); |
| dq = _mm256_sign_epi16(dq, *c); |
| |
| store_two_quan(q, qcoeff, dq, dqcoeff); |
| const __m256i zero = _mm256_setzero_si256(); |
| const __m256i iscan = _mm256_loadu_si256((const __m256i *)iscan_ptr); |
| const __m256i zero_coeff = _mm256_cmpeq_epi16(dq, zero); |
| const __m256i nzero_coeff = _mm256_cmpeq_epi16(zero_coeff, zero); |
| __m256i cur_eob = _mm256_sub_epi16(iscan, nzero_coeff); |
| cur_eob = _mm256_and_si256(cur_eob, nzero_coeff); |
| *eob = _mm256_max_epi16(*eob, cur_eob); |
| } else { |
| write_zero(qcoeff); |
| write_zero(dqcoeff); |
| } |
| } |
| |
| void av1_quantize_fp_64x64_avx2( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int16_t *zbin_ptr, |
| const int16_t *round_ptr, const int16_t *quant_ptr, |
| const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan_ptr, const int16_t *iscan_ptr) { |
| (void)scan_ptr; |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| const unsigned int step = 16; |
| |
| __m256i qp[3]; |
| __m256i coeff, thr; |
| const int log_scale = 2; |
| |
| init_qp(round_ptr, quant_ptr, dequant_ptr, log_scale, &thr, qp); |
| read_coeff(coeff_ptr, &coeff); |
| |
| __m256i eob = _mm256_setzero_si256(); |
| quantize_64x64(&thr, qp, &coeff, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| |
| update_qp(log_scale, &thr, qp); |
| |
| while (n_coeffs > 0) { |
| read_coeff(coeff_ptr, &coeff); |
| quantize_64x64(&thr, qp, &coeff, iscan_ptr, qcoeff_ptr, dqcoeff_ptr, &eob); |
| |
| coeff_ptr += step; |
| qcoeff_ptr += step; |
| dqcoeff_ptr += step; |
| iscan_ptr += step; |
| n_coeffs -= step; |
| } |
| *eob_ptr = quant_gather_eob(eob); |
| } |
