1 /* 2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <assert.h> 12 #include <emmintrin.h> 13 #include <xmmintrin.h> 14 15 #include "./vp9_rtcd.h" 16 #include "vpx/vpx_integer.h" 17 #include "vpx_dsp/vpx_dsp_common.h" 18 #include "vpx_dsp/x86/bitdepth_conversion_sse2.h" 19 20 void vp9_quantize_fp_sse2(const tran_low_t *coeff_ptr, intptr_t n_coeffs, 21 int skip_block, const int16_t *round_ptr, 22 const int16_t *quant_ptr, tran_low_t *qcoeff_ptr, 23 tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, 24 uint16_t *eob_ptr, const int16_t *scan, 25 const int16_t *iscan) { 26 __m128i zero; 27 __m128i thr; 28 int16_t nzflag; 29 __m128i eob; 30 __m128i round, quant, dequant; 31 32 (void)scan; 33 (void)skip_block; 34 assert(!skip_block); 35 36 coeff_ptr += n_coeffs; 37 iscan += n_coeffs; 38 qcoeff_ptr += n_coeffs; 39 dqcoeff_ptr += n_coeffs; 40 n_coeffs = -n_coeffs; 41 zero = _mm_setzero_si128(); 42 43 { 44 __m128i coeff0, coeff1; 45 46 // Setup global values 47 { 48 round = _mm_load_si128((const __m128i *)round_ptr); 49 quant = _mm_load_si128((const __m128i *)quant_ptr); 50 dequant = _mm_load_si128((const __m128i *)dequant_ptr); 51 } 52 53 { 54 __m128i coeff0_sign, coeff1_sign; 55 __m128i qcoeff0, qcoeff1; 56 __m128i qtmp0, qtmp1; 57 // Do DC and first 15 AC 58 coeff0 = load_tran_low(coeff_ptr + n_coeffs); 59 coeff1 = load_tran_low(coeff_ptr + n_coeffs + 8); 60 61 // Poor man's sign extract 62 coeff0_sign = _mm_srai_epi16(coeff0, 15); 63 coeff1_sign = _mm_srai_epi16(coeff1, 15); 64 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); 65 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); 66 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 67 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 68 69 qcoeff0 = _mm_adds_epi16(qcoeff0, round); 70 round = _mm_unpackhi_epi64(round, round); 71 qcoeff1 = _mm_adds_epi16(qcoeff1, round); 72 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); 73 quant = _mm_unpackhi_epi64(quant, quant); 74 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); 75 76 // Reinsert signs 77 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); 78 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); 79 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 80 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 81 82 store_tran_low(qcoeff0, qcoeff_ptr + n_coeffs); 83 store_tran_low(qcoeff1, qcoeff_ptr + n_coeffs + 8); 84 85 coeff0 = _mm_mullo_epi16(qcoeff0, dequant); 86 dequant = _mm_unpackhi_epi64(dequant, dequant); 87 coeff1 = _mm_mullo_epi16(qcoeff1, dequant); 88 89 store_tran_low(coeff0, dqcoeff_ptr + n_coeffs); 90 store_tran_low(coeff1, dqcoeff_ptr + n_coeffs + 8); 91 } 92 93 { 94 // Scan for eob 95 __m128i zero_coeff0, zero_coeff1; 96 __m128i nzero_coeff0, nzero_coeff1; 97 __m128i iscan0, iscan1; 98 __m128i eob1; 99 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); 100 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); 101 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); 102 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); 103 iscan0 = _mm_load_si128((const __m128i *)(iscan + n_coeffs)); 104 iscan1 = _mm_load_si128((const __m128i *)(iscan + n_coeffs) + 1); 105 // Add one to convert from indices to counts 106 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); 107 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); 108 eob = _mm_and_si128(iscan0, nzero_coeff0); 109 eob1 = _mm_and_si128(iscan1, nzero_coeff1); 110 eob = _mm_max_epi16(eob, eob1); 111 } 112 n_coeffs += 8 * 2; 113 } 114 115 thr = _mm_srai_epi16(dequant, 1); 116 117 // AC only loop 118 while (n_coeffs < 0) { 119 __m128i coeff0, coeff1; 120 { 121 __m128i coeff0_sign, coeff1_sign; 122 __m128i qcoeff0, qcoeff1; 123 __m128i qtmp0, qtmp1; 124 125 coeff0 = load_tran_low(coeff_ptr + n_coeffs); 126 coeff1 = load_tran_low(coeff_ptr + n_coeffs + 8); 127 128 // Poor man's sign extract 129 coeff0_sign = _mm_srai_epi16(coeff0, 15); 130 coeff1_sign = _mm_srai_epi16(coeff1, 15); 131 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign); 132 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign); 133 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 134 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 135 136 nzflag = _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff0, thr)) | 137 _mm_movemask_epi8(_mm_cmpgt_epi16(qcoeff1, thr)); 138 139 if (nzflag) { 140 qcoeff0 = _mm_adds_epi16(qcoeff0, round); 141 qcoeff1 = _mm_adds_epi16(qcoeff1, round); 142 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant); 143 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant); 144 145 // Reinsert signs 146 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign); 147 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign); 148 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign); 149 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign); 150 151 store_tran_low(qcoeff0, qcoeff_ptr + n_coeffs); 152 store_tran_low(qcoeff1, qcoeff_ptr + n_coeffs + 8); 153 154 coeff0 = _mm_mullo_epi16(qcoeff0, dequant); 155 coeff1 = _mm_mullo_epi16(qcoeff1, dequant); 156 157 store_tran_low(coeff0, dqcoeff_ptr + n_coeffs); 158 store_tran_low(coeff1, dqcoeff_ptr + n_coeffs + 8); 159 } else { 160 store_zero_tran_low(qcoeff_ptr + n_coeffs); 161 store_zero_tran_low(qcoeff_ptr + n_coeffs + 8); 162 163 store_zero_tran_low(dqcoeff_ptr + n_coeffs); 164 store_zero_tran_low(dqcoeff_ptr + n_coeffs + 8); 165 } 166 } 167 168 if (nzflag) { 169 // Scan for eob 170 __m128i zero_coeff0, zero_coeff1; 171 __m128i nzero_coeff0, nzero_coeff1; 172 __m128i iscan0, iscan1; 173 __m128i eob0, eob1; 174 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero); 175 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero); 176 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero); 177 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero); 178 iscan0 = _mm_load_si128((const __m128i *)(iscan + n_coeffs)); 179 iscan1 = _mm_load_si128((const __m128i *)(iscan + n_coeffs) + 1); 180 // Add one to convert from indices to counts 181 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0); 182 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1); 183 eob0 = _mm_and_si128(iscan0, nzero_coeff0); 184 eob1 = _mm_and_si128(iscan1, nzero_coeff1); 185 eob0 = _mm_max_epi16(eob0, eob1); 186 eob = _mm_max_epi16(eob, eob0); 187 } 188 n_coeffs += 8 * 2; 189 } 190 191 // Accumulate EOB 192 { 193 __m128i eob_shuffled; 194 eob_shuffled = _mm_shuffle_epi32(eob, 0xe); 195 eob = _mm_max_epi16(eob, eob_shuffled); 196 eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); 197 eob = _mm_max_epi16(eob, eob_shuffled); 198 eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); 199 eob = _mm_max_epi16(eob, eob_shuffled); 200 *eob_ptr = _mm_extract_epi16(eob, 1); 201 } 202 } 203
