1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*
* Copyright (c) 2022 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <immintrin.h>
#include "./vpx_dsp_rtcd.h"
#include "vp9/common/vp9_scan.h"
#include "vp9/encoder/vp9_block.h"
static VPX_FORCE_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 VPX_FORCE_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 VPX_FORCE_INLINE void init_qp(
const struct macroblock_plane *const mb_plane, const int16_t *dequant_ptr,
__m256i *qp, int log_scale) {
const __m128i zbin = _mm_loadu_si128((const __m128i *)mb_plane->zbin);
const __m128i round = _mm_loadu_si128((const __m128i *)mb_plane->round);
const __m128i quant = _mm_loadu_si128((const __m128i *)mb_plane->quant);
const __m128i dequant = _mm_loadu_si128((const __m128i *)dequant_ptr);
const __m128i quant_shift =
_mm_loadu_si128((const __m128i *)mb_plane->quant_shift);
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]);
if (log_scale > 0) {
const __m256i rnd = _mm256_set1_epi32((int16_t)(1 << (log_scale - 1)));
qp[0] = _mm256_add_epi32(qp[0], rnd);
qp[0] = _mm256_srai_epi32(qp[0], log_scale);
qp[1] = _mm256_add_epi32(qp[1], rnd);
qp[1] = _mm256_srai_epi32(qp[1], log_scale);
}
// Subtracting 1 here eliminates a _mm256_cmpeq_epi32() instruction when
// calculating the zbin mask.
qp[0] = _mm256_sub_epi32(qp[0], _mm256_set1_epi32(1));
}
// 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 VPX_FORCE_INLINE __m256i mm256_mul_shift_epi32(const __m256i *x,
const __m256i *y) {
__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);
const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
prod_lo = _mm256_srli_epi64(prod_lo, 16);
prod_lo = _mm256_and_si256(prod_lo, mask);
prod_hi = _mm256_srli_epi64(prod_hi, 16);
prod_hi = _mm256_slli_epi64(prod_hi, 32);
return _mm256_or_si256(prod_lo, prod_hi);
}
static VPX_FORCE_INLINE __m256i get_max_lane_eob(const int16_t *iscan_ptr,
__m256i eobmax,
__m256i nz_mask) {
const __m256i packed_nz_mask = _mm256_packs_epi32(nz_mask, nz_mask);
const __m256i packed_nz_mask_perm =
_mm256_permute4x64_epi64(packed_nz_mask, 0xD8);
const __m256i iscan =
_mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)iscan_ptr));
const __m256i nz_iscan = _mm256_and_si256(iscan, packed_nz_mask_perm);
return _mm256_max_epi16(eobmax, nz_iscan);
}
// Get the max eob from the lower 128 bits.
static VPX_FORCE_INLINE uint16_t get_max_eob(__m256i eob) {
__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);
#if defined(_MSC_VER) && (_MSC_VER < 1910)
return _mm_cvtsi128_si32(_mm256_extracti128_si256(eob, 0)) & 0xffff;
#else
return (uint16_t)_mm256_extract_epi16(eob, 0);
#endif
}
static VPX_FORCE_INLINE void quantize(const __m256i *qp,
const tran_low_t *coeff_ptr,
const int16_t *iscan_ptr,
tran_low_t *qcoeff, tran_low_t *dqcoeff,
__m256i *eob) {
const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
const __m256i abs_coeff = _mm256_abs_epi32(coeff);
const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
if (_mm256_movemask_epi8(zbin_mask) == 0) {
const __m256i zero = _mm256_setzero_si256();
_mm256_storeu_si256((__m256i *)qcoeff, zero);
_mm256_storeu_si256((__m256i *)dqcoeff, zero);
return;
}
{
const __m256i tmp_rnd =
_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
const __m256i tmp = mm256_mul_shift_epi32(&tmp_rnd, &qp[2]);
const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
const __m256i abs_q = mm256_mul_shift_epi32(&tmp2, &qp[4]);
const __m256i abs_dq = _mm256_mullo_epi32(abs_q, qp[3]);
const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
const __m256i q = _mm256_sign_epi32(abs_q, coeff);
const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
_mm256_storeu_si256((__m256i *)qcoeff, q);
_mm256_storeu_si256((__m256i *)dqcoeff, dq);
*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
}
}
void vpx_highbd_quantize_b_avx2(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const struct macroblock_plane *const mb_plane,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t *dequant_ptr, uint16_t *eob_ptr,
const struct ScanOrder *const scan_order) {
const int step = 8;
__m256i eob = _mm256_setzero_si256();
__m256i qp[5];
const int16_t *iscan = scan_order->iscan;
init_qp(mb_plane, dequant_ptr, qp, 0);
quantize(qp, coeff_ptr, 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) {
quantize(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
}
*eob_ptr = get_max_eob(eob);
}
static VPX_FORCE_INLINE __m256i mm256_mul_shift_epi32_logscale(const __m256i *x,
const __m256i *y,
int log_scale) {
__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);
const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
prod_lo = _mm256_srli_epi64(prod_lo, 16 - log_scale);
prod_lo = _mm256_and_si256(prod_lo, mask);
prod_hi = _mm256_srli_epi64(prod_hi, 16 - log_scale);
prod_hi = _mm256_slli_epi64(prod_hi, 32);
return _mm256_or_si256(prod_lo, prod_hi);
}
static VPX_FORCE_INLINE void quantize_b_32x32(
const __m256i *qp, const tran_low_t *coeff_ptr, const int16_t *iscan_ptr,
tran_low_t *qcoeff, tran_low_t *dqcoeff, __m256i *eob) {
const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
const __m256i abs_coeff = _mm256_abs_epi32(coeff);
const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
if (_mm256_movemask_epi8(zbin_mask) == 0) {
const __m256i zero = _mm256_setzero_si256();
_mm256_storeu_si256((__m256i *)qcoeff, zero);
_mm256_storeu_si256((__m256i *)dqcoeff, zero);
return;
}
{
const __m256i tmp_rnd =
_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
// const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw;
const __m256i tmp = mm256_mul_shift_epi32_logscale(&tmp_rnd, &qp[2], 0);
const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
// const int abs_qcoeff = (int)((tmp2 * quant_shift_ptr[rc != 0]) >> 15);
const __m256i abs_q = mm256_mul_shift_epi32_logscale(&tmp2, &qp[4], 1);
const __m256i abs_dq =
_mm256_srli_epi32(_mm256_mullo_epi32(abs_q, qp[3]), 1);
const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
const __m256i q = _mm256_sign_epi32(abs_q, coeff);
const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
_mm256_storeu_si256((__m256i *)qcoeff, q);
_mm256_storeu_si256((__m256i *)dqcoeff, dq);
*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
}
}
void vpx_highbd_quantize_b_32x32_avx2(
const tran_low_t *coeff_ptr, const struct macroblock_plane *const mb_plane,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr,
uint16_t *eob_ptr, const struct ScanOrder *const scan_order) {
const unsigned int step = 8;
intptr_t n_coeffs = 32 * 32;
const int16_t *iscan = scan_order->iscan;
__m256i eob = _mm256_setzero_si256();
__m256i qp[5];
init_qp(mb_plane, dequant_ptr, qp, 1);
quantize_b_32x32(qp, coeff_ptr, 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) {
quantize_b_32x32(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
}
*eob_ptr = get_max_eob(eob);
}
|
