1 /*
2 * Copyright (c) 2016, 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 <emmintrin.h>
13
14 #include "config/av1_rtcd.h"
15
16 #include "aom_dsp/aom_dsp_common.h"
17 #include "aom_dsp/aom_filter.h"
18 #include "aom_dsp/x86/convolve_sse2.h"
19 #include "aom_dsp/x86/convolve_common_intrin.h"
20 #include "av1/common/convolve.h"
21
convolve_2d_sr_12tap_sse2(const uint8_t * src,int src_stride,uint8_t * dst,int dst_stride,int w,int h,const InterpFilterParams * filter_params_x,const InterpFilterParams * filter_params_y,const int subpel_x_qn,const int subpel_y_qn,ConvolveParams * conv_params)22 static void convolve_2d_sr_12tap_sse2(
23 const uint8_t *src, int src_stride, uint8_t *dst, int dst_stride, int w,
24 int h, const InterpFilterParams *filter_params_x,
25 const InterpFilterParams *filter_params_y, const int subpel_x_qn,
26 const int subpel_y_qn, ConvolveParams *conv_params) {
27 const int bd = 8;
28
29 DECLARE_ALIGNED(16, int16_t,
30 im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);
31 int im_h = h + filter_params_y->taps - 1;
32 int im_stride = w;
33 int i, j;
34 const int fo_vert = filter_params_y->taps / 2 - 1;
35 const int fo_horiz = filter_params_x->taps / 2 - 1;
36 const uint8_t *const src_ptr = src - fo_vert * src_stride - fo_horiz;
37
38 const __m128i zero = _mm_setzero_si128();
39 const int bits =
40 FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1;
41 const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0;
42
43 assert(conv_params->round_0 > 0);
44 __m128i coeffs[6];
45
46 /* Horizontal filter */
47 {
48 prepare_coeffs_12tap(filter_params_x, subpel_x_qn, coeffs);
49
50 const __m128i round_const = _mm_set1_epi32(
51 (1 << (bd + FILTER_BITS - 1)) + ((1 << conv_params->round_0) >> 1));
52 const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_0);
53
54 for (i = 0; i < im_h; ++i) {
55 for (j = 0; j < w; j += 8) {
56 const __m128i data =
57 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]);
58 const __m128i data_2 =
59 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + (j + 4)]);
60
61 // Filter even-index pixels
62 const __m128i src_0 = _mm_unpacklo_epi8(data, zero);
63 const __m128i res_0 = _mm_madd_epi16(src_0, coeffs[0]);
64 const __m128i src_2 = _mm_unpacklo_epi8(_mm_srli_si128(data, 2), zero);
65 const __m128i res_2 = _mm_madd_epi16(src_2, coeffs[1]);
66 const __m128i src_4 = _mm_unpacklo_epi8(data_2, zero);
67 const __m128i res_4 = _mm_madd_epi16(src_4, coeffs[2]);
68 const __m128i src_6 =
69 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 2), zero);
70 const __m128i res_6 = _mm_madd_epi16(src_6, coeffs[3]);
71 const __m128i src_8 =
72 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 4), zero);
73 const __m128i res_8 = _mm_madd_epi16(src_8, coeffs[4]);
74 const __m128i src_10 =
75 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 6), zero);
76 const __m128i res_10 = _mm_madd_epi16(src_10, coeffs[5]);
77
78 const __m128i res_0246 = _mm_add_epi32(_mm_add_epi32(res_0, res_4),
79 _mm_add_epi32(res_2, res_6));
80 __m128i res_even =
81 _mm_add_epi32(_mm_add_epi32(res_8, res_10), res_0246);
82 res_even =
83 _mm_sra_epi32(_mm_add_epi32(res_even, round_const), round_shift);
84
85 // Filter odd-index pixels
86 const __m128i src_1 = _mm_unpacklo_epi8(_mm_srli_si128(data, 1), zero);
87 const __m128i res_1 = _mm_madd_epi16(src_1, coeffs[0]);
88 const __m128i src_3 = _mm_unpacklo_epi8(_mm_srli_si128(data, 3), zero);
89 const __m128i res_3 = _mm_madd_epi16(src_3, coeffs[1]);
90 const __m128i src_5 =
91 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 1), zero);
92 const __m128i res_5 = _mm_madd_epi16(src_5, coeffs[2]);
93 const __m128i src_7 =
94 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 3), zero);
95 const __m128i res_7 = _mm_madd_epi16(src_7, coeffs[3]);
96 const __m128i src_9 =
97 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 5), zero);
98 const __m128i res_9 = _mm_madd_epi16(src_9, coeffs[4]);
99 const __m128i src_11 =
100 _mm_unpacklo_epi8(_mm_srli_si128(data_2, 7), zero);
101 const __m128i res_11 = _mm_madd_epi16(src_11, coeffs[5]);
102
103 const __m128i res_1357 = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
104 _mm_add_epi32(res_3, res_7));
105 __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_9, res_11), res_1357);
106 res_odd =
107 _mm_sra_epi32(_mm_add_epi32(res_odd, round_const), round_shift);
108
109 // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7
110 __m128i res = _mm_packs_epi32(res_even, res_odd);
111 _mm_storeu_si128((__m128i *)&im_block[i * im_stride + j], res);
112 }
113 }
114 }
115
116 /* Vertical filter */
117 {
118 prepare_coeffs_12tap(filter_params_y, subpel_y_qn, coeffs);
119
120 const __m128i sum_round =
121 _mm_set1_epi32((1 << offset_bits) + ((1 << conv_params->round_1) >> 1));
122 const __m128i sum_shift = _mm_cvtsi32_si128(conv_params->round_1);
123
124 const __m128i round_const = _mm_set1_epi32(
125 ((1 << bits) >> 1) - (1 << (offset_bits - conv_params->round_1)) -
126 ((1 << (offset_bits - conv_params->round_1)) >> 1));
127 const __m128i round_shift = _mm_cvtsi32_si128(bits);
128
129 for (i = 0; i < h; ++i) {
130 for (j = 0; j < w; j += 8) {
131 // Filter even-index pixels
132 const int16_t *data = &im_block[i * im_stride + j];
133 const __m128i src_0 =
134 _mm_unpacklo_epi16(*(__m128i *)(data + 0 * im_stride),
135 *(__m128i *)(data + 1 * im_stride));
136 const __m128i src_2 =
137 _mm_unpacklo_epi16(*(__m128i *)(data + 2 * im_stride),
138 *(__m128i *)(data + 3 * im_stride));
139 const __m128i src_4 =
140 _mm_unpacklo_epi16(*(__m128i *)(data + 4 * im_stride),
141 *(__m128i *)(data + 5 * im_stride));
142 const __m128i src_6 =
143 _mm_unpacklo_epi16(*(__m128i *)(data + 6 * im_stride),
144 *(__m128i *)(data + 7 * im_stride));
145 const __m128i src_8 =
146 _mm_unpacklo_epi16(*(__m128i *)(data + 8 * im_stride),
147 *(__m128i *)(data + 9 * im_stride));
148 const __m128i src_10 =
149 _mm_unpacklo_epi16(*(__m128i *)(data + 10 * im_stride),
150 *(__m128i *)(data + 11 * im_stride));
151
152 const __m128i res_0 = _mm_madd_epi16(src_0, coeffs[0]);
153 const __m128i res_2 = _mm_madd_epi16(src_2, coeffs[1]);
154 const __m128i res_4 = _mm_madd_epi16(src_4, coeffs[2]);
155 const __m128i res_6 = _mm_madd_epi16(src_6, coeffs[3]);
156 const __m128i res_8 = _mm_madd_epi16(src_8, coeffs[4]);
157 const __m128i res_10 = _mm_madd_epi16(src_10, coeffs[5]);
158
159 const __m128i res_0246 = _mm_add_epi32(_mm_add_epi32(res_0, res_2),
160 _mm_add_epi32(res_4, res_6));
161 __m128i res_even =
162 _mm_add_epi32(_mm_add_epi32(res_8, res_10), res_0246);
163
164 // Filter odd-index pixels
165 const __m128i src_1 =
166 _mm_unpackhi_epi16(*(__m128i *)(data + 0 * im_stride),
167 *(__m128i *)(data + 1 * im_stride));
168 const __m128i src_3 =
169 _mm_unpackhi_epi16(*(__m128i *)(data + 2 * im_stride),
170 *(__m128i *)(data + 3 * im_stride));
171 const __m128i src_5 =
172 _mm_unpackhi_epi16(*(__m128i *)(data + 4 * im_stride),
173 *(__m128i *)(data + 5 * im_stride));
174 const __m128i src_7 =
175 _mm_unpackhi_epi16(*(__m128i *)(data + 6 * im_stride),
176 *(__m128i *)(data + 7 * im_stride));
177 const __m128i src_9 =
178 _mm_unpackhi_epi16(*(__m128i *)(data + 8 * im_stride),
179 *(__m128i *)(data + 9 * im_stride));
180 const __m128i src_11 =
181 _mm_unpackhi_epi16(*(__m128i *)(data + 10 * im_stride),
182 *(__m128i *)(data + 11 * im_stride));
183
184 const __m128i res_1 = _mm_madd_epi16(src_1, coeffs[0]);
185 const __m128i res_3 = _mm_madd_epi16(src_3, coeffs[1]);
186 const __m128i res_5 = _mm_madd_epi16(src_5, coeffs[2]);
187 const __m128i res_7 = _mm_madd_epi16(src_7, coeffs[3]);
188 const __m128i res_9 = _mm_madd_epi16(src_9, coeffs[4]);
189 const __m128i res_11 = _mm_madd_epi16(src_11, coeffs[5]);
190
191 const __m128i res_1357 = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
192 _mm_add_epi32(res_3, res_7));
193 __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_9, res_11), res_1357);
194
195 // Rearrange pixels back into the order 0 ... 7
196 const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd);
197 const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd);
198
199 __m128i res_lo_round =
200 _mm_sra_epi32(_mm_add_epi32(res_lo, sum_round), sum_shift);
201 __m128i res_hi_round =
202 _mm_sra_epi32(_mm_add_epi32(res_hi, sum_round), sum_shift);
203
204 res_lo_round = _mm_sra_epi32(_mm_add_epi32(res_lo_round, round_const),
205 round_shift);
206 res_hi_round = _mm_sra_epi32(_mm_add_epi32(res_hi_round, round_const),
207 round_shift);
208
209 const __m128i res16 = _mm_packs_epi32(res_lo_round, res_hi_round);
210 const __m128i res = _mm_packus_epi16(res16, res16);
211
212 // Accumulate values into the destination buffer
213 __m128i *const p = (__m128i *)&dst[i * dst_stride + j];
214
215 _mm_storel_epi64(p, res);
216 }
217 }
218 }
219 }
220
av1_convolve_2d_sr_sse2(const uint8_t * src,int src_stride,uint8_t * dst,int dst_stride,int w,int h,const InterpFilterParams * filter_params_x,const InterpFilterParams * filter_params_y,const int subpel_x_qn,const int subpel_y_qn,ConvolveParams * conv_params)221 void av1_convolve_2d_sr_sse2(const uint8_t *src, int src_stride, uint8_t *dst,
222 int dst_stride, int w, int h,
223 const InterpFilterParams *filter_params_x,
224 const InterpFilterParams *filter_params_y,
225 const int subpel_x_qn, const int subpel_y_qn,
226 ConvolveParams *conv_params) {
227 if (filter_params_x->taps > 8) {
228 if (w < 8) {
229 av1_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h,
230 filter_params_x, filter_params_y, subpel_x_qn,
231 subpel_y_qn, conv_params);
232 } else {
233 convolve_2d_sr_12tap_sse2(src, src_stride, dst, dst_stride, w, h,
234 filter_params_x, filter_params_y, subpel_x_qn,
235 subpel_y_qn, conv_params);
236 }
237 } else {
238 const int bd = 8;
239
240 DECLARE_ALIGNED(16, int16_t,
241 im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);
242 int im_h = h + filter_params_y->taps - 1;
243 int im_stride = MAX_SB_SIZE;
244 int i, j;
245 const int fo_vert = filter_params_y->taps / 2 - 1;
246 const int fo_horiz = filter_params_x->taps / 2 - 1;
247 const uint8_t *const src_ptr = src - fo_vert * src_stride - fo_horiz;
248
249 const __m128i zero = _mm_setzero_si128();
250 const int bits =
251 FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1;
252 const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0;
253
254 assert(conv_params->round_0 > 0);
255
256 /* Horizontal filter */
257 {
258 const int16_t *x_filter = av1_get_interp_filter_subpel_kernel(
259 filter_params_x, subpel_x_qn & SUBPEL_MASK);
260 const __m128i coeffs_x = _mm_loadu_si128((__m128i *)x_filter);
261
262 // coeffs 0 1 0 1 2 3 2 3
263 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x);
264 // coeffs 4 5 4 5 6 7 6 7
265 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x);
266
267 // coeffs 0 1 0 1 0 1 0 1
268 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
269 // coeffs 2 3 2 3 2 3 2 3
270 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
271 // coeffs 4 5 4 5 4 5 4 5
272 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
273 // coeffs 6 7 6 7 6 7 6 7
274 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);
275
276 const __m128i round_const = _mm_set1_epi32(
277 (1 << (bd + FILTER_BITS - 1)) + ((1 << conv_params->round_0) >> 1));
278 const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_0);
279
280 for (i = 0; i < im_h; ++i) {
281 for (j = 0; j < w; j += 8) {
282 const __m128i data =
283 _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]);
284
285 // Filter even-index pixels
286 const __m128i src_0 = _mm_unpacklo_epi8(data, zero);
287 const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01);
288 const __m128i src_2 =
289 _mm_unpacklo_epi8(_mm_srli_si128(data, 2), zero);
290 const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
291 const __m128i src_4 =
292 _mm_unpacklo_epi8(_mm_srli_si128(data, 4), zero);
293 const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
294 const __m128i src_6 =
295 _mm_unpacklo_epi8(_mm_srli_si128(data, 6), zero);
296 const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);
297
298 __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4),
299 _mm_add_epi32(res_2, res_6));
300 res_even =
301 _mm_sra_epi32(_mm_add_epi32(res_even, round_const), round_shift);
302
303 // Filter odd-index pixels
304 const __m128i src_1 =
305 _mm_unpacklo_epi8(_mm_srli_si128(data, 1), zero);
306 const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
307 const __m128i src_3 =
308 _mm_unpacklo_epi8(_mm_srli_si128(data, 3), zero);
309 const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
310 const __m128i src_5 =
311 _mm_unpacklo_epi8(_mm_srli_si128(data, 5), zero);
312 const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
313 const __m128i src_7 =
314 _mm_unpacklo_epi8(_mm_srli_si128(data, 7), zero);
315 const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);
316
317 __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
318 _mm_add_epi32(res_3, res_7));
319 res_odd =
320 _mm_sra_epi32(_mm_add_epi32(res_odd, round_const), round_shift);
321
322 // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7
323 __m128i res = _mm_packs_epi32(res_even, res_odd);
324 _mm_storeu_si128((__m128i *)&im_block[i * im_stride + j], res);
325 }
326 }
327 }
328
329 /* Vertical filter */
330 {
331 const int16_t *y_filter = av1_get_interp_filter_subpel_kernel(
332 filter_params_y, subpel_y_qn & SUBPEL_MASK);
333 const __m128i coeffs_y = _mm_loadu_si128((__m128i *)y_filter);
334
335 // coeffs 0 1 0 1 2 3 2 3
336 const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y);
337 // coeffs 4 5 4 5 6 7 6 7
338 const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y);
339
340 // coeffs 0 1 0 1 0 1 0 1
341 const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
342 // coeffs 2 3 2 3 2 3 2 3
343 const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
344 // coeffs 4 5 4 5 4 5 4 5
345 const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
346 // coeffs 6 7 6 7 6 7 6 7
347 const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);
348
349 const __m128i sum_round = _mm_set1_epi32(
350 (1 << offset_bits) + ((1 << conv_params->round_1) >> 1));
351 const __m128i sum_shift = _mm_cvtsi32_si128(conv_params->round_1);
352
353 const __m128i round_const = _mm_set1_epi32(
354 ((1 << bits) >> 1) - (1 << (offset_bits - conv_params->round_1)) -
355 ((1 << (offset_bits - conv_params->round_1)) >> 1));
356 const __m128i round_shift = _mm_cvtsi32_si128(bits);
357
358 for (i = 0; i < h; ++i) {
359 for (j = 0; j < w; j += 8) {
360 // Filter even-index pixels
361 const int16_t *data = &im_block[i * im_stride + j];
362 const __m128i src_0 =
363 _mm_unpacklo_epi16(*(__m128i *)(data + 0 * im_stride),
364 *(__m128i *)(data + 1 * im_stride));
365 const __m128i src_2 =
366 _mm_unpacklo_epi16(*(__m128i *)(data + 2 * im_stride),
367 *(__m128i *)(data + 3 * im_stride));
368 const __m128i src_4 =
369 _mm_unpacklo_epi16(*(__m128i *)(data + 4 * im_stride),
370 *(__m128i *)(data + 5 * im_stride));
371 const __m128i src_6 =
372 _mm_unpacklo_epi16(*(__m128i *)(data + 6 * im_stride),
373 *(__m128i *)(data + 7 * im_stride));
374
375 const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01);
376 const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
377 const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
378 const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);
379
380 const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2),
381 _mm_add_epi32(res_4, res_6));
382
383 // Filter odd-index pixels
384 const __m128i src_1 =
385 _mm_unpackhi_epi16(*(__m128i *)(data + 0 * im_stride),
386 *(__m128i *)(data + 1 * im_stride));
387 const __m128i src_3 =
388 _mm_unpackhi_epi16(*(__m128i *)(data + 2 * im_stride),
389 *(__m128i *)(data + 3 * im_stride));
390 const __m128i src_5 =
391 _mm_unpackhi_epi16(*(__m128i *)(data + 4 * im_stride),
392 *(__m128i *)(data + 5 * im_stride));
393 const __m128i src_7 =
394 _mm_unpackhi_epi16(*(__m128i *)(data + 6 * im_stride),
395 *(__m128i *)(data + 7 * im_stride));
396
397 const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
398 const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
399 const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
400 const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);
401
402 const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3),
403 _mm_add_epi32(res_5, res_7));
404
405 // Rearrange pixels back into the order 0 ... 7
406 const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd);
407 const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd);
408
409 __m128i res_lo_round =
410 _mm_sra_epi32(_mm_add_epi32(res_lo, sum_round), sum_shift);
411 __m128i res_hi_round =
412 _mm_sra_epi32(_mm_add_epi32(res_hi, sum_round), sum_shift);
413
414 res_lo_round = _mm_sra_epi32(_mm_add_epi32(res_lo_round, round_const),
415 round_shift);
416 res_hi_round = _mm_sra_epi32(_mm_add_epi32(res_hi_round, round_const),
417 round_shift);
418
419 const __m128i res16 = _mm_packs_epi32(res_lo_round, res_hi_round);
420 const __m128i res = _mm_packus_epi16(res16, res16);
421
422 // Accumulate values into the destination buffer
423 __m128i *const p = (__m128i *)&dst[i * dst_stride + j];
424
425 if (w == 2) {
426 *(uint16_t *)p = (uint16_t)_mm_cvtsi128_si32(res);
427 } else if (w == 4) {
428 *(int *)p = _mm_cvtsi128_si32(res);
429 } else {
430 _mm_storel_epi64(p, res);
431 }
432 }
433 }
434 }
435 }
436 }
437
av1_dist_wtd_convolve_2d_copy_sse2(const uint8_t * src,int src_stride,uint8_t * dst0,int dst_stride0,int w,int h,ConvolveParams * conv_params)438 void av1_dist_wtd_convolve_2d_copy_sse2(const uint8_t *src, int src_stride,
439 uint8_t *dst0, int dst_stride0, int w,
440 int h, ConvolveParams *conv_params) {
441 const int bd = 8;
442 CONV_BUF_TYPE *dst = conv_params->dst;
443 int dst_stride = conv_params->dst_stride;
444
445 const int bits =
446 FILTER_BITS * 2 - conv_params->round_1 - conv_params->round_0;
447 const int do_average = conv_params->do_average;
448 const int use_dist_wtd_comp_avg = conv_params->use_dist_wtd_comp_avg;
449 const __m128i zero = _mm_setzero_si128();
450 const __m128i left_shift = _mm_cvtsi32_si128(bits);
451 int i, j;
452
453 const int w0 = conv_params->fwd_offset;
454 const int w1 = conv_params->bck_offset;
455 const __m128i wt0 = _mm_set1_epi16(w0);
456 const __m128i wt1 = _mm_set1_epi16(w1);
457 const __m128i wt = _mm_unpacklo_epi16(wt0, wt1);
458
459 const int offset_0 =
460 bd + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
461 const int offset = (1 << offset_0) + (1 << (offset_0 - 1));
462 const __m128i offset_const = _mm_set1_epi16(offset);
463 const int rounding_shift =
464 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
465 const __m128i rounding_const = _mm_set1_epi16((1 << rounding_shift) >> 1);
466
467 assert((w % 4) == 0);
468
469 if (!(w % 16)) {
470 for (i = 0; i < h; ++i) {
471 for (j = 0; j < w; j += 16) {
472 const __m128i d8 = _mm_loadu_si128((__m128i *)&src[j]);
473
474 const __m128i d16_lo = _mm_unpacklo_epi8(d8, zero);
475 const __m128i d16_hi = _mm_unpackhi_epi8(d8, zero);
476
477 const __m128i res_lo = _mm_sll_epi16(d16_lo, left_shift);
478 const __m128i res_unsigned_lo = _mm_add_epi16(res_lo, offset_const);
479
480 const __m128i res_hi = _mm_sll_epi16(d16_hi, left_shift);
481 const __m128i res_unsigned_hi = _mm_add_epi16(res_hi, offset_const);
482
483 if (do_average) {
484 const __m128i data_ref_0_lo = _mm_loadu_si128((__m128i *)(&dst[j]));
485 const __m128i data_ref_0_hi =
486 _mm_loadu_si128((__m128i *)(&dst[j + 8]));
487
488 const __m128i comp_avg_res_lo = comp_avg(
489 &data_ref_0_lo, &res_unsigned_lo, &wt, use_dist_wtd_comp_avg);
490
491 const __m128i round_result_lo = convolve_rounding(
492 &comp_avg_res_lo, &offset_const, &rounding_const, rounding_shift);
493
494 const __m128i comp_avg_res_hi = comp_avg(
495 &data_ref_0_hi, &res_unsigned_hi, &wt, use_dist_wtd_comp_avg);
496
497 const __m128i round_result_hi = convolve_rounding(
498 &comp_avg_res_hi, &offset_const, &rounding_const, rounding_shift);
499
500 const __m128i res_8 =
501 _mm_packus_epi16(round_result_lo, round_result_hi);
502
503 _mm_store_si128((__m128i *)(&dst0[j]), res_8);
504 } else {
505 _mm_store_si128((__m128i *)(&dst[j]), res_unsigned_lo);
506 _mm_store_si128((__m128i *)(&dst[j + 8]), res_unsigned_hi);
507 }
508 }
509 src += src_stride;
510 dst += dst_stride;
511 dst0 += dst_stride0;
512 }
513 } else {
514 for (i = 0; i < h; ++i) {
515 for (j = 0; j < w; j += 8) {
516 const __m128i d8 = _mm_loadl_epi64((__m128i *)&src[j]);
517 const __m128i d16_0 = _mm_unpacklo_epi8(d8, zero);
518
519 const __m128i res = _mm_sll_epi16(d16_0, left_shift);
520 const __m128i res_unsigned = _mm_add_epi16(res, offset_const);
521
522 if (do_average) {
523 const __m128i data_ref_0 = _mm_loadu_si128((__m128i *)(&dst[j]));
524
525 const __m128i comp_avg_res =
526 comp_avg(&data_ref_0, &res_unsigned, &wt, use_dist_wtd_comp_avg);
527
528 const __m128i round_result = convolve_rounding(
529 &comp_avg_res, &offset_const, &rounding_const, rounding_shift);
530
531 const __m128i res_8 = _mm_packus_epi16(round_result, round_result);
532
533 if (w > 4)
534 _mm_storel_epi64((__m128i *)(&dst0[j]), res_8);
535 else
536 *(int *)(&dst0[j]) = _mm_cvtsi128_si32(res_8);
537 } else {
538 _mm_store_si128((__m128i *)(&dst[j]), res_unsigned);
539 }
540 }
541 src += src_stride;
542 dst += dst_stride;
543 dst0 += dst_stride0;
544 }
545 }
546 }
547