diff options
Diffstat (limited to 'third_party/aom/aom_dsp/x86/highbd_quantize_intrin_avx2.c')
| -rw-r--r-- | third_party/aom/aom_dsp/x86/highbd_quantize_intrin_avx2.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/highbd_quantize_intrin_avx2.c b/third_party/aom/aom_dsp/x86/highbd_quantize_intrin_avx2.c new file mode 100644 index 000000000..b9689202a --- /dev/null +++ b/third_party/aom/aom_dsp/x86/highbd_quantize_intrin_avx2.c @@ -0,0 +1,160 @@ +/* + * 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/aom_dsp_rtcd.h" + +#include "aom/aom_integer.h" + +static INLINE void init_one_qp(const __m128i *p, __m256i *qp) { + const __m128i sign = _mm_srai_epi16(*p, 15); + const __m128i dc = _mm_unpacklo_epi16(*p, sign); + const __m128i ac = _mm_unpackhi_epi16(*p, sign); + *qp = _mm256_insertf128_si256(_mm256_castsi128_si256(dc), ac, 1); +} + +static INLINE void update_qp(__m256i *qp) { + int i; + for (i = 0; i < 5; ++i) { + qp[i] = _mm256_permute2x128_si256(qp[i], qp[i], 0x11); + } +} + +static INLINE void init_qp(const int16_t *zbin_ptr, const int16_t *round_ptr, + const int16_t *quant_ptr, const int16_t *dequant_ptr, + const int16_t *quant_shift_ptr, __m256i *qp) { + const __m128i zbin = _mm_loadu_si128((const __m128i *)zbin_ptr); + const __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); + const __m128i quant_shift = _mm_loadu_si128((const __m128i *)quant_shift_ptr); + init_one_qp(&zbin, &qp[0]); + init_one_qp(&round, &qp[1]); + init_one_qp(&quant, &qp[2]); + init_one_qp(&dequant, &qp[3]); + init_one_qp(&quant_shift, &qp[4]); +} + +// Note: +// *x is vector multiplied by *y which is 16 int32_t parallel multiplication +// and right shift 16. The output, 16 int32_t is save in *p. +static INLINE void mm256_mul_shift_epi32(const __m256i *x, const __m256i *y, + __m256i *p) { + __m256i prod_lo = _mm256_mul_epi32(*x, *y); + __m256i prod_hi = _mm256_srli_epi64(*x, 32); + const __m256i mult_hi = _mm256_srli_epi64(*y, 32); + prod_hi = _mm256_mul_epi32(prod_hi, mult_hi); + + prod_lo = _mm256_srli_epi64(prod_lo, 16); + const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1); + prod_lo = _mm256_and_si256(prod_lo, mask); + prod_hi = _mm256_srli_epi64(prod_hi, 16); + + prod_hi = _mm256_slli_epi64(prod_hi, 32); + *p = _mm256_or_si256(prod_lo, prod_hi); +} + +static INLINE void quantize(const __m256i *qp, __m256i *c, + const int16_t *iscan_ptr, tran_low_t *qcoeff, + tran_low_t *dqcoeff, __m256i *eob) { + const __m256i abs = _mm256_abs_epi32(*c); + const __m256i flag1 = _mm256_cmpgt_epi32(abs, qp[0]); + __m256i flag2 = _mm256_cmpeq_epi32(abs, qp[0]); + flag2 = _mm256_or_si256(flag1, flag2); + const int32_t nzflag = _mm256_movemask_epi8(flag2); + + if (LIKELY(nzflag)) { + __m256i q = _mm256_add_epi32(abs, qp[1]); + __m256i tmp; + mm256_mul_shift_epi32(&q, &qp[2], &tmp); + q = _mm256_add_epi32(tmp, q); + + mm256_mul_shift_epi32(&q, &qp[4], &q); + __m256i dq = _mm256_mullo_epi32(q, qp[3]); + + q = _mm256_sign_epi32(q, *c); + dq = _mm256_sign_epi32(dq, *c); + q = _mm256_and_si256(q, flag2); + dq = _mm256_and_si256(dq, flag2); + + _mm256_storeu_si256((__m256i *)qcoeff, q); + _mm256_storeu_si256((__m256i *)dqcoeff, dq); + + const __m128i isc = _mm_loadu_si128((const __m128i *)iscan_ptr); + const __m128i zr = _mm_setzero_si128(); + const __m128i lo = _mm_unpacklo_epi16(isc, zr); + const __m128i hi = _mm_unpackhi_epi16(isc, zr); + const __m256i iscan = + _mm256_insertf128_si256(_mm256_castsi128_si256(lo), hi, 1); + + const __m256i zero = _mm256_setzero_si256(); + const __m256i zc = _mm256_cmpeq_epi32(dq, zero); + const __m256i nz = _mm256_cmpeq_epi32(zc, zero); + __m256i cur_eob = _mm256_sub_epi32(iscan, nz); + cur_eob = _mm256_and_si256(cur_eob, nz); + *eob = _mm256_max_epi32(cur_eob, *eob); + } else { + const __m256i zero = _mm256_setzero_si256(); + _mm256_storeu_si256((__m256i *)qcoeff, zero); + _mm256_storeu_si256((__m256i *)dqcoeff, zero); + } +} + +void aom_highbd_quantize_b_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, const int16_t *iscan) { + (void)scan; + const unsigned int step = 8; + + __m256i qp[5], coeff; + init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp); + coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr); + + __m256i eob = _mm256_setzero_si256(); + quantize(qp, &coeff, iscan, qcoeff_ptr, dqcoeff_ptr, &eob); + + coeff_ptr += step; + qcoeff_ptr += step; + dqcoeff_ptr += step; + iscan += step; + n_coeffs -= step; + + update_qp(qp); + + while (n_coeffs > 0) { + coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr); + quantize(qp, &coeff, iscan, qcoeff_ptr, dqcoeff_ptr, &eob); + + coeff_ptr += step; + qcoeff_ptr += step; + dqcoeff_ptr += step; + iscan += step; + n_coeffs -= step; + } + { + __m256i eob_s; + eob_s = _mm256_shuffle_epi32(eob, 0xe); + eob = _mm256_max_epi16(eob, eob_s); + eob_s = _mm256_shufflelo_epi16(eob, 0xe); + eob = _mm256_max_epi16(eob, eob_s); + eob_s = _mm256_shufflelo_epi16(eob, 1); + eob = _mm256_max_epi16(eob, eob_s); + const __m128i final_eob = _mm_max_epi16(_mm256_castsi256_si128(eob), + _mm256_extractf128_si256(eob, 1)); + *eob_ptr = _mm_extract_epi16(final_eob, 0); + } +} |