1 /*
2 * Copyright (c) 2019, Alliance for Open Media. All rights reserved.
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #include <assert.h>
13 #include <tmmintrin.h>
14 #include <emmintrin.h>
15 #include <xmmintrin.h>
16
17 #include "config/aom_dsp_rtcd.h"
18
19 #include "aom/aom_integer.h"
20 #include "aom_dsp/x86/quantize_x86.h"
21
calculate_qcoeff_64x64(__m128i * coeff,const __m128i round,const __m128i quant,const __m128i * shift)22 static inline void calculate_qcoeff_64x64(__m128i *coeff, const __m128i round,
23 const __m128i quant,
24 const __m128i *shift) {
25 __m128i tmp, qcoeff, tmp1;
26 qcoeff = _mm_adds_epi16(*coeff, round);
27 tmp = _mm_mulhi_epi16(qcoeff, quant);
28 qcoeff = _mm_add_epi16(tmp, qcoeff);
29 tmp = _mm_mullo_epi16(qcoeff, *shift);
30 tmp = _mm_srli_epi16(tmp, 14);
31 tmp1 = _mm_mulhi_epi16(qcoeff, *shift);
32 tmp1 = _mm_slli_epi16(tmp1, 2);
33 *coeff = _mm_or_si128(tmp, tmp1);
34 }
35
calculate_dqcoeff_and_store_64x64(const __m128i qcoeff,const __m128i dequant,const __m128i zero,tran_low_t * dqcoeff)36 static inline void calculate_dqcoeff_and_store_64x64(const __m128i qcoeff,
37 const __m128i dequant,
38 const __m128i zero,
39 tran_low_t *dqcoeff) {
40 // Un-sign to bias rounding like C.
41 const __m128i coeff = _mm_abs_epi16(qcoeff);
42
43 const __m128i sign_0 = _mm_unpacklo_epi16(zero, qcoeff);
44 const __m128i sign_1 = _mm_unpackhi_epi16(zero, qcoeff);
45
46 const __m128i low = _mm_mullo_epi16(coeff, dequant);
47 const __m128i high = _mm_mulhi_epi16(coeff, dequant);
48 __m128i dqcoeff32_0 = _mm_unpacklo_epi16(low, high);
49 __m128i dqcoeff32_1 = _mm_unpackhi_epi16(low, high);
50
51 // "Divide" by 4.
52 dqcoeff32_0 = _mm_srli_epi32(dqcoeff32_0, 2);
53 dqcoeff32_1 = _mm_srli_epi32(dqcoeff32_1, 2);
54
55 dqcoeff32_0 = _mm_sign_epi32(dqcoeff32_0, sign_0);
56 dqcoeff32_1 = _mm_sign_epi32(dqcoeff32_1, sign_1);
57
58 _mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0);
59 _mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1);
60 }
61
aom_quantize_b_64x64_ssse3(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)62 void aom_quantize_b_64x64_ssse3(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
63 const int16_t *zbin_ptr,
64 const int16_t *round_ptr,
65 const int16_t *quant_ptr,
66 const int16_t *quant_shift_ptr,
67 tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
68 const int16_t *dequant_ptr, uint16_t *eob_ptr,
69 const int16_t *scan, const int16_t *iscan) {
70 const __m128i zero = _mm_setzero_si128();
71 const __m128i one = _mm_set1_epi16(1);
72 const __m128i two = _mm_set1_epi16(2);
73 int index;
74
75 __m128i zbin, round, quant, dequant, shift;
76 __m128i coeff0, coeff1, qcoeff0, qcoeff1;
77 __m128i cmp_mask0, cmp_mask1, all_zero;
78 __m128i eob = zero, eob0;
79
80 (void)scan;
81 (void)n_coeffs;
82
83 // Setup global values.
84 zbin = _mm_load_si128((const __m128i *)zbin_ptr);
85 round = _mm_load_si128((const __m128i *)round_ptr);
86 quant = _mm_load_si128((const __m128i *)quant_ptr);
87 dequant = _mm_load_si128((const __m128i *)dequant_ptr);
88 shift = _mm_load_si128((const __m128i *)quant_shift_ptr);
89
90 // Shift with rounding.
91 zbin = _mm_add_epi16(zbin, two);
92 round = _mm_add_epi16(round, two);
93 zbin = _mm_srli_epi16(zbin, 2);
94 round = _mm_srli_epi16(round, 2);
95 zbin = _mm_sub_epi16(zbin, one);
96 // Do DC and first 15 AC.
97 coeff0 = load_coefficients(coeff_ptr);
98 coeff1 = load_coefficients(coeff_ptr + 8);
99
100 qcoeff0 = _mm_abs_epi16(coeff0);
101 qcoeff1 = _mm_abs_epi16(coeff1);
102
103 cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
104 zbin = _mm_unpackhi_epi64(zbin, zbin);
105 cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
106 all_zero = _mm_or_si128(cmp_mask0, cmp_mask1);
107 if (_mm_movemask_epi8(all_zero) == 0) {
108 _mm_store_si128((__m128i *)(qcoeff_ptr), zero);
109 _mm_store_si128((__m128i *)(qcoeff_ptr + 4), zero);
110 _mm_store_si128((__m128i *)(qcoeff_ptr + 8), zero);
111 _mm_store_si128((__m128i *)(qcoeff_ptr + 12), zero);
112 _mm_store_si128((__m128i *)(dqcoeff_ptr), zero);
113 _mm_store_si128((__m128i *)(dqcoeff_ptr + 4), zero);
114 _mm_store_si128((__m128i *)(dqcoeff_ptr + 8), zero);
115 _mm_store_si128((__m128i *)(dqcoeff_ptr + 12), zero);
116 round = _mm_unpackhi_epi64(round, round);
117 quant = _mm_unpackhi_epi64(quant, quant);
118 shift = _mm_unpackhi_epi64(shift, shift);
119 dequant = _mm_unpackhi_epi64(dequant, dequant);
120 } else {
121 calculate_qcoeff_64x64(&qcoeff0, round, quant, &shift);
122 round = _mm_unpackhi_epi64(round, round);
123 quant = _mm_unpackhi_epi64(quant, quant);
124 shift = _mm_unpackhi_epi64(shift, shift);
125 calculate_qcoeff_64x64(&qcoeff1, round, quant, &shift);
126
127 // Reinsert signs.
128 qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
129 qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
130
131 // Mask out zbin threshold coeffs.
132 qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
133 qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
134
135 store_coefficients(qcoeff0, qcoeff_ptr);
136 store_coefficients(qcoeff1, qcoeff_ptr + 8);
137
138 calculate_dqcoeff_and_store_64x64(qcoeff0, dequant, zero, dqcoeff_ptr);
139 dequant = _mm_unpackhi_epi64(dequant, dequant);
140 calculate_dqcoeff_and_store_64x64(qcoeff1, dequant, zero, dqcoeff_ptr + 8);
141
142 eob =
143 scan_for_eob(&qcoeff0, &qcoeff1, cmp_mask0, cmp_mask1, iscan, 0, zero);
144 }
145
146 // AC only loop.
147 for (index = 16; index < 1024; index += 16) {
148 coeff0 = load_coefficients(coeff_ptr + index);
149 coeff1 = load_coefficients(coeff_ptr + index + 8);
150
151 qcoeff0 = _mm_abs_epi16(coeff0);
152 qcoeff1 = _mm_abs_epi16(coeff1);
153
154 cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
155 cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
156
157 all_zero = _mm_or_si128(cmp_mask0, cmp_mask1);
158 if (_mm_movemask_epi8(all_zero) == 0) {
159 _mm_store_si128((__m128i *)(qcoeff_ptr + index), zero);
160 _mm_store_si128((__m128i *)(qcoeff_ptr + index + 4), zero);
161 _mm_store_si128((__m128i *)(qcoeff_ptr + index + 8), zero);
162 _mm_store_si128((__m128i *)(qcoeff_ptr + index + 12), zero);
163 _mm_store_si128((__m128i *)(dqcoeff_ptr + index), zero);
164 _mm_store_si128((__m128i *)(dqcoeff_ptr + index + 4), zero);
165 _mm_store_si128((__m128i *)(dqcoeff_ptr + index + 8), zero);
166 _mm_store_si128((__m128i *)(dqcoeff_ptr + index + 12), zero);
167 continue;
168 }
169 calculate_qcoeff_64x64(&qcoeff0, round, quant, &shift);
170 calculate_qcoeff_64x64(&qcoeff1, round, quant, &shift);
171
172 qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
173 qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
174
175 qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
176 qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
177
178 store_coefficients(qcoeff0, qcoeff_ptr + index);
179 store_coefficients(qcoeff1, qcoeff_ptr + index + 8);
180
181 calculate_dqcoeff_and_store_64x64(qcoeff0, dequant, zero,
182 dqcoeff_ptr + index);
183 calculate_dqcoeff_and_store_64x64(qcoeff1, dequant, zero,
184 dqcoeff_ptr + 8 + index);
185
186 eob0 = scan_for_eob(&qcoeff0, &qcoeff1, cmp_mask0, cmp_mask1, iscan, index,
187 zero);
188 eob = _mm_max_epi16(eob, eob0);
189 }
190
191 *eob_ptr = accumulate_eob(eob);
192 }
193