| /* |
| * 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 <emmintrin.h> |
| #include <xmmintrin.h> |
| |
| #include "config/av1_rtcd.h" |
| |
| #include "aom/aom_integer.h" |
| #include "aom_dsp/x86/quantize_x86.h" |
| |
| static INLINE void read_coeff(const tran_low_t *coeff, intptr_t offset, |
| __m128i *c0, __m128i *c1) { |
| const tran_low_t *addr = coeff + offset; |
| if (sizeof(tran_low_t) == 4) { |
| const __m128i x0 = _mm_load_si128((const __m128i *)addr); |
| const __m128i x1 = _mm_load_si128((const __m128i *)addr + 1); |
| const __m128i x2 = _mm_load_si128((const __m128i *)addr + 2); |
| const __m128i x3 = _mm_load_si128((const __m128i *)addr + 3); |
| *c0 = _mm_packs_epi32(x0, x1); |
| *c1 = _mm_packs_epi32(x2, x3); |
| } else { |
| *c0 = _mm_load_si128((const __m128i *)addr); |
| *c1 = _mm_load_si128((const __m128i *)addr + 1); |
| } |
| } |
| |
| static INLINE void write_qcoeff(const __m128i *qc0, const __m128i *qc1, |
| tran_low_t *qcoeff, intptr_t offset) { |
| tran_low_t *addr = qcoeff + offset; |
| if (sizeof(tran_low_t) == 4) { |
| const __m128i zero = _mm_setzero_si128(); |
| __m128i sign_bits = _mm_cmplt_epi16(*qc0, zero); |
| __m128i y0 = _mm_unpacklo_epi16(*qc0, sign_bits); |
| __m128i y1 = _mm_unpackhi_epi16(*qc0, sign_bits); |
| _mm_store_si128((__m128i *)addr, y0); |
| _mm_store_si128((__m128i *)addr + 1, y1); |
| |
| sign_bits = _mm_cmplt_epi16(*qc1, zero); |
| y0 = _mm_unpacklo_epi16(*qc1, sign_bits); |
| y1 = _mm_unpackhi_epi16(*qc1, sign_bits); |
| _mm_store_si128((__m128i *)addr + 2, y0); |
| _mm_store_si128((__m128i *)addr + 3, y1); |
| } else { |
| _mm_store_si128((__m128i *)addr, *qc0); |
| _mm_store_si128((__m128i *)addr + 1, *qc1); |
| } |
| } |
| |
| static INLINE void write_zero(tran_low_t *qcoeff, intptr_t offset) { |
| const __m128i zero = _mm_setzero_si128(); |
| tran_low_t *addr = qcoeff + offset; |
| if (sizeof(tran_low_t) == 4) { |
| _mm_store_si128((__m128i *)addr, zero); |
| _mm_store_si128((__m128i *)addr + 1, zero); |
| _mm_store_si128((__m128i *)addr + 2, zero); |
| _mm_store_si128((__m128i *)addr + 3, zero); |
| } else { |
| _mm_store_si128((__m128i *)addr, zero); |
| _mm_store_si128((__m128i *)addr + 1, zero); |
| } |
| } |
| |
| static INLINE void quantize(const int16_t *iscan_ptr, |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, |
| const __m128i *round0, const __m128i *round1, |
| const __m128i *quant0, const __m128i *quant1, |
| const __m128i *dequant0, const __m128i *dequant1, |
| const __m128i *thr0, const __m128i *thr1, |
| __m128i *eob) { |
| __m128i coeff0, coeff1; |
| // Do DC and first 15 AC |
| read_coeff(coeff_ptr, n_coeffs, &coeff0, &coeff1); |
| |
| // Poor man's sign extract |
| const __m128i coeff0_sign = _mm_srai_epi16(coeff0, 15); |
| const __m128i coeff1_sign = _mm_srai_epi16(coeff1, 15); |
| __m128i qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); |
| __m128i qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); |
| qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); |
| qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); |
| const __m128i mask0 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff0, *thr0), |
| _mm_cmpeq_epi16(qcoeff0, *thr0)); |
| const __m128i mask1 = _mm_or_si128(_mm_cmpgt_epi16(qcoeff1, *thr1), |
| _mm_cmpeq_epi16(qcoeff1, *thr1)); |
| const int nzflag = _mm_movemask_epi8(mask0) | _mm_movemask_epi8(mask1); |
| |
| if (nzflag) { |
| qcoeff0 = _mm_adds_epi16(qcoeff0, *round0); |
| qcoeff1 = _mm_adds_epi16(qcoeff1, *round1); |
| const __m128i qtmp0 = _mm_mulhi_epi16(qcoeff0, *quant0); |
| const __m128i qtmp1 = _mm_mulhi_epi16(qcoeff1, *quant1); |
| |
| // Reinsert signs |
| qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); |
| qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); |
| qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); |
| qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); |
| |
| write_qcoeff(&qcoeff0, &qcoeff1, qcoeff_ptr, n_coeffs); |
| |
| coeff0 = _mm_mullo_epi16(qcoeff0, *dequant0); |
| coeff1 = _mm_mullo_epi16(qcoeff1, *dequant1); |
| |
| write_qcoeff(&coeff0, &coeff1, dqcoeff_ptr, n_coeffs); |
| |
| const __m128i zero = _mm_setzero_si128(); |
| // Scan for eob |
| const __m128i zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); |
| const __m128i zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); |
| const __m128i nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); |
| const __m128i nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); |
| const __m128i iscan0 = |
| _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs)); |
| const __m128i iscan1 = |
| _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs) + 1); |
| // Add one to convert from indices to counts |
| const __m128i iscan0_nz = _mm_sub_epi16(iscan0, nzero_coeff0); |
| const __m128i iscan1_nz = _mm_sub_epi16(iscan1, nzero_coeff1); |
| const __m128i eob0 = _mm_and_si128(iscan0_nz, nzero_coeff0); |
| const __m128i eob1 = _mm_and_si128(iscan1_nz, nzero_coeff1); |
| const __m128i eob2 = _mm_max_epi16(eob0, eob1); |
| *eob = _mm_max_epi16(*eob, eob2); |
| } else { |
| write_zero(qcoeff_ptr, n_coeffs); |
| write_zero(dqcoeff_ptr, n_coeffs); |
| } |
| } |
| |
| void av1_quantize_fp_sse2(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; |
| |
| coeff_ptr += n_coeffs; |
| iscan_ptr += n_coeffs; |
| qcoeff_ptr += n_coeffs; |
| dqcoeff_ptr += n_coeffs; |
| n_coeffs = -n_coeffs; |
| |
| const __m128i round0 = _mm_load_si128((const __m128i *)round_ptr); |
| const __m128i round1 = _mm_unpackhi_epi64(round0, round0); |
| const __m128i quant0 = _mm_load_si128((const __m128i *)quant_ptr); |
| const __m128i quant1 = _mm_unpackhi_epi64(quant0, quant0); |
| const __m128i dequant0 = _mm_load_si128((const __m128i *)dequant_ptr); |
| const __m128i dequant1 = _mm_unpackhi_epi64(dequant0, dequant0); |
| const __m128i thr0 = _mm_srai_epi16(dequant0, 1); |
| const __m128i thr1 = _mm_srai_epi16(dequant1, 1); |
| __m128i eob = _mm_setzero_si128(); |
| |
| quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round0, |
| &round1, &quant0, &quant1, &dequant0, &dequant1, &thr0, &thr1, &eob); |
| |
| n_coeffs += 8 * 2; |
| |
| // AC only loop |
| while (n_coeffs < 0) { |
| quantize(iscan_ptr, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round1, |
| &round1, &quant1, &quant1, &dequant1, &dequant1, &thr1, &thr1, |
| &eob); |
| n_coeffs += 8 * 2; |
| } |
| |
| // Accumulate 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); |
| *eob_ptr = _mm_extract_epi16(eob, 1); |
| } |
| } |
| |
| static INLINE void quantize_lp(const int16_t *iscan_ptr, |
| const int16_t *coeff_ptr, intptr_t n_coeffs, |
| int16_t *qcoeff_ptr, int16_t *dqcoeff_ptr, |
| const __m128i *round0, const __m128i *round1, |
| const __m128i *quant0, const __m128i *quant1, |
| const __m128i *dequant0, const __m128i *dequant1, |
| __m128i *eob) { |
| const int16_t *read = coeff_ptr + n_coeffs; |
| __m128i coeff0 = _mm_load_si128((const __m128i *)read); |
| __m128i coeff1 = _mm_load_si128((const __m128i *)read + 1); |
| |
| // Poor man's sign extract |
| const __m128i coeff0_sign = _mm_srai_epi16(coeff0, 15); |
| const __m128i coeff1_sign = _mm_srai_epi16(coeff1, 15); |
| __m128i qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); |
| __m128i qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); |
| qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); |
| qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); |
| |
| qcoeff0 = _mm_adds_epi16(qcoeff0, *round0); |
| qcoeff1 = _mm_adds_epi16(qcoeff1, *round1); |
| const __m128i qtmp0 = _mm_mulhi_epi16(qcoeff0, *quant0); |
| const __m128i qtmp1 = _mm_mulhi_epi16(qcoeff1, *quant1); |
| |
| // Reinsert signs |
| qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); |
| qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); |
| qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); |
| qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); |
| |
| int16_t *addr = qcoeff_ptr + n_coeffs; |
| _mm_store_si128((__m128i *)addr, qcoeff0); |
| _mm_store_si128((__m128i *)addr + 1, qcoeff1); |
| |
| coeff0 = _mm_mullo_epi16(qcoeff0, *dequant0); |
| coeff1 = _mm_mullo_epi16(qcoeff1, *dequant1); |
| |
| addr = dqcoeff_ptr + n_coeffs; |
| _mm_store_si128((__m128i *)addr, coeff0); |
| _mm_store_si128((__m128i *)addr + 1, coeff1); |
| |
| const __m128i zero = _mm_setzero_si128(); |
| // Scan for eob |
| const __m128i zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); |
| const __m128i zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); |
| const __m128i nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); |
| const __m128i nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); |
| |
| const __m128i iscan0 = |
| _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs)); |
| const __m128i iscan1 = |
| _mm_load_si128((const __m128i *)(iscan_ptr + n_coeffs) + 1); |
| |
| // Add one to convert from indices to counts |
| const __m128i iscan0_nz = _mm_sub_epi16(iscan0, nzero_coeff0); |
| const __m128i iscan1_nz = _mm_sub_epi16(iscan1, nzero_coeff1); |
| const __m128i eob0 = _mm_and_si128(iscan0_nz, nzero_coeff0); |
| const __m128i eob1 = _mm_and_si128(iscan1_nz, nzero_coeff1); |
| const __m128i eob2 = _mm_max_epi16(eob0, eob1); |
| *eob = _mm_max_epi16(*eob, eob2); |
| } |
| |
| void av1_quantize_lp_sse2(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; |
| coeff_ptr += n_coeffs; |
| iscan += n_coeffs; |
| qcoeff_ptr += n_coeffs; |
| dqcoeff_ptr += n_coeffs; |
| n_coeffs = -n_coeffs; |
| |
| // Setup global values |
| const __m128i round0 = _mm_load_si128((const __m128i *)round_ptr); |
| const __m128i round1 = _mm_unpackhi_epi64(round0, round0); |
| const __m128i quant0 = _mm_load_si128((const __m128i *)quant_ptr); |
| const __m128i quant1 = _mm_unpackhi_epi64(quant0, quant0); |
| const __m128i dequant0 = _mm_load_si128((const __m128i *)dequant_ptr); |
| const __m128i dequant1 = _mm_unpackhi_epi64(dequant0, dequant0); |
| __m128i eob = _mm_setzero_si128(); |
| |
| // DC and first 15 AC |
| quantize_lp(iscan, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round0, |
| &round1, &quant0, &quant1, &dequant0, &dequant1, &eob); |
| n_coeffs += 8 * 2; |
| |
| // AC only loop |
| while (n_coeffs < 0) { |
| quantize_lp(iscan, coeff_ptr, n_coeffs, qcoeff_ptr, dqcoeff_ptr, &round1, |
| &round1, &quant1, &quant1, &dequant1, &dequant1, &eob); |
| n_coeffs += 8 * 2; |
| } |
| |
| // Accumulate EOB |
| *eob_ptr = accumulate_eob(eob); |
| } |