diff options
Diffstat (limited to 'third_party/aom/av1/encoder/x86/av1_quantize_avx2.c')
| -rw-r--r-- | third_party/aom/av1/encoder/x86/av1_quantize_avx2.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/x86/av1_quantize_avx2.c b/third_party/aom/av1/encoder/x86/av1_quantize_avx2.c new file mode 100644 index 000000000..df22aaba7 --- /dev/null +++ b/third_party/aom/av1/encoder/x86/av1_quantize_avx2.c @@ -0,0 +1,330 @@ +/* + * 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 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 void quantize(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_epi16(q, qp[1]); + q = _mm256_sign_epi16(q, *c); + const __m256i dq = _mm256_mullo_epi16(q, qp[2]); + + 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_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 = 0; + + init_qp(round_ptr, quant_ptr, dequant_ptr, log_scale, &thr, qp); + read_coeff(coeff_ptr, &coeff); + + __m256i eob = _mm256_setzero_si256(); + quantize(&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(&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_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); +} |