1 /*
2 * Copyright (c) 2012 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> // SSE2
13
14 #include "./vp9_rtcd.h"
15 #include "./vpx_dsp_rtcd.h"
16 #include "vpx_dsp/txfm_common.h"
17 #include "vpx_dsp/x86/bitdepth_conversion_sse2.h"
18 #include "vpx_dsp/x86/fwd_txfm_sse2.h"
19 #include "vpx_dsp/x86/transpose_sse2.h"
20 #include "vpx_dsp/x86/txfm_common_sse2.h"
21 #include "vpx_ports/mem.h"
22
load_buffer_4x4(const int16_t * input,__m128i * in,int stride)23 static INLINE void load_buffer_4x4(const int16_t *input, __m128i *in,
24 int stride) {
25 const __m128i k__nonzero_bias_a = _mm_setr_epi16(0, 1, 1, 1, 1, 1, 1, 1);
26 const __m128i k__nonzero_bias_b = _mm_setr_epi16(1, 0, 0, 0, 0, 0, 0, 0);
27 __m128i mask;
28
29 in[0] = _mm_loadl_epi64((const __m128i *)(input + 0 * stride));
30 in[1] = _mm_loadl_epi64((const __m128i *)(input + 1 * stride));
31 in[2] = _mm_loadl_epi64((const __m128i *)(input + 2 * stride));
32 in[3] = _mm_loadl_epi64((const __m128i *)(input + 3 * stride));
33
34 in[0] = _mm_slli_epi16(in[0], 4);
35 in[1] = _mm_slli_epi16(in[1], 4);
36 in[2] = _mm_slli_epi16(in[2], 4);
37 in[3] = _mm_slli_epi16(in[3], 4);
38
39 mask = _mm_cmpeq_epi16(in[0], k__nonzero_bias_a);
40 in[0] = _mm_add_epi16(in[0], mask);
41 in[0] = _mm_add_epi16(in[0], k__nonzero_bias_b);
42 }
43
write_buffer_4x4(tran_low_t * output,__m128i * res)44 static INLINE void write_buffer_4x4(tran_low_t *output, __m128i *res) {
45 const __m128i kOne = _mm_set1_epi16(1);
46 __m128i in01 = _mm_unpacklo_epi64(res[0], res[1]);
47 __m128i in23 = _mm_unpacklo_epi64(res[2], res[3]);
48 __m128i out01 = _mm_add_epi16(in01, kOne);
49 __m128i out23 = _mm_add_epi16(in23, kOne);
50 out01 = _mm_srai_epi16(out01, 2);
51 out23 = _mm_srai_epi16(out23, 2);
52 store_output(&out01, (output + 0 * 8));
53 store_output(&out23, (output + 1 * 8));
54 }
55
transpose_4x4(__m128i * res)56 static INLINE void transpose_4x4(__m128i *res) {
57 // Combine and transpose
58 // 00 01 02 03 20 21 22 23
59 // 10 11 12 13 30 31 32 33
60 const __m128i tr0_0 = _mm_unpacklo_epi16(res[0], res[1]);
61 const __m128i tr0_1 = _mm_unpackhi_epi16(res[0], res[1]);
62
63 // 00 10 01 11 02 12 03 13
64 // 20 30 21 31 22 32 23 33
65 res[0] = _mm_unpacklo_epi32(tr0_0, tr0_1);
66 res[2] = _mm_unpackhi_epi32(tr0_0, tr0_1);
67
68 // 00 10 20 30 01 11 21 31
69 // 02 12 22 32 03 13 23 33
70 // only use the first 4 16-bit integers
71 res[1] = _mm_unpackhi_epi64(res[0], res[0]);
72 res[3] = _mm_unpackhi_epi64(res[2], res[2]);
73 }
74
fdct4_sse2(__m128i * in)75 static void fdct4_sse2(__m128i *in) {
76 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
77 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
78 const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
79 const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
80 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
81
82 __m128i u[4], v[4];
83 u[0] = _mm_unpacklo_epi16(in[0], in[1]);
84 u[1] = _mm_unpacklo_epi16(in[3], in[2]);
85
86 v[0] = _mm_add_epi16(u[0], u[1]);
87 v[1] = _mm_sub_epi16(u[0], u[1]);
88
89 u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16); // 0
90 u[1] = _mm_madd_epi16(v[0], k__cospi_p16_m16); // 2
91 u[2] = _mm_madd_epi16(v[1], k__cospi_p08_p24); // 1
92 u[3] = _mm_madd_epi16(v[1], k__cospi_p24_m08); // 3
93
94 v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
95 v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
96 v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
97 v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
98 u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
99 u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
100 u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
101 u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
102
103 in[0] = _mm_packs_epi32(u[0], u[1]);
104 in[1] = _mm_packs_epi32(u[2], u[3]);
105 transpose_4x4(in);
106 }
107
fadst4_sse2(__m128i * in)108 static void fadst4_sse2(__m128i *in) {
109 const __m128i k__sinpi_p01_p02 = pair_set_epi16(sinpi_1_9, sinpi_2_9);
110 const __m128i k__sinpi_p04_m01 = pair_set_epi16(sinpi_4_9, -sinpi_1_9);
111 const __m128i k__sinpi_p03_p04 = pair_set_epi16(sinpi_3_9, sinpi_4_9);
112 const __m128i k__sinpi_m03_p02 = pair_set_epi16(-sinpi_3_9, sinpi_2_9);
113 const __m128i k__sinpi_p03_p03 = _mm_set1_epi16((int16_t)sinpi_3_9);
114 const __m128i kZero = _mm_set1_epi16(0);
115 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
116 __m128i u[8], v[8];
117 __m128i in7 = _mm_add_epi16(in[0], in[1]);
118
119 u[0] = _mm_unpacklo_epi16(in[0], in[1]);
120 u[1] = _mm_unpacklo_epi16(in[2], in[3]);
121 u[2] = _mm_unpacklo_epi16(in7, kZero);
122 u[3] = _mm_unpacklo_epi16(in[2], kZero);
123 u[4] = _mm_unpacklo_epi16(in[3], kZero);
124
125 v[0] = _mm_madd_epi16(u[0], k__sinpi_p01_p02); // s0 + s2
126 v[1] = _mm_madd_epi16(u[1], k__sinpi_p03_p04); // s4 + s5
127 v[2] = _mm_madd_epi16(u[2], k__sinpi_p03_p03); // x1
128 v[3] = _mm_madd_epi16(u[0], k__sinpi_p04_m01); // s1 - s3
129 v[4] = _mm_madd_epi16(u[1], k__sinpi_m03_p02); // -s4 + s6
130 v[5] = _mm_madd_epi16(u[3], k__sinpi_p03_p03); // s4
131 v[6] = _mm_madd_epi16(u[4], k__sinpi_p03_p03);
132
133 u[0] = _mm_add_epi32(v[0], v[1]);
134 u[1] = _mm_sub_epi32(v[2], v[6]);
135 u[2] = _mm_add_epi32(v[3], v[4]);
136 u[3] = _mm_sub_epi32(u[2], u[0]);
137 u[4] = _mm_slli_epi32(v[5], 2);
138 u[5] = _mm_sub_epi32(u[4], v[5]);
139 u[6] = _mm_add_epi32(u[3], u[5]);
140
141 v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
142 v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
143 v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
144 v[3] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
145
146 u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
147 u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
148 u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
149 u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
150
151 in[0] = _mm_packs_epi32(u[0], u[2]);
152 in[1] = _mm_packs_epi32(u[1], u[3]);
153 transpose_4x4(in);
154 }
155
vp9_fht4x4_sse2(const int16_t * input,tran_low_t * output,int stride,int tx_type)156 void vp9_fht4x4_sse2(const int16_t *input, tran_low_t *output, int stride,
157 int tx_type) {
158 __m128i in[4];
159
160 switch (tx_type) {
161 case DCT_DCT: vpx_fdct4x4_sse2(input, output, stride); break;
162 case ADST_DCT:
163 load_buffer_4x4(input, in, stride);
164 fadst4_sse2(in);
165 fdct4_sse2(in);
166 write_buffer_4x4(output, in);
167 break;
168 case DCT_ADST:
169 load_buffer_4x4(input, in, stride);
170 fdct4_sse2(in);
171 fadst4_sse2(in);
172 write_buffer_4x4(output, in);
173 break;
174 default:
175 assert(tx_type == ADST_ADST);
176 load_buffer_4x4(input, in, stride);
177 fadst4_sse2(in);
178 fadst4_sse2(in);
179 write_buffer_4x4(output, in);
180 break;
181 }
182 }
183
vp9_fdct8x8_quant_sse2(const int16_t * input,int stride,tran_low_t * coeff_ptr,intptr_t n_coeffs,int skip_block,const int16_t * round_ptr,const int16_t * quant_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)184 void vp9_fdct8x8_quant_sse2(const int16_t *input, int stride,
185 tran_low_t *coeff_ptr, intptr_t n_coeffs,
186 int skip_block, const int16_t *round_ptr,
187 const int16_t *quant_ptr, tran_low_t *qcoeff_ptr,
188 tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr,
189 uint16_t *eob_ptr, const int16_t *scan,
190 const int16_t *iscan) {
191 __m128i zero;
192 int pass;
193
194 // Constants
195 // When we use them, in one case, they are all the same. In all others
196 // it's a pair of them that we need to repeat four times. This is done
197 // by constructing the 32 bit constant corresponding to that pair.
198 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
199 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
200 const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
201 const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
202 const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
203 const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
204 const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
205 const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
206 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
207 // Load input
208 __m128i in0 = _mm_load_si128((const __m128i *)(input + 0 * stride));
209 __m128i in1 = _mm_load_si128((const __m128i *)(input + 1 * stride));
210 __m128i in2 = _mm_load_si128((const __m128i *)(input + 2 * stride));
211 __m128i in3 = _mm_load_si128((const __m128i *)(input + 3 * stride));
212 __m128i in4 = _mm_load_si128((const __m128i *)(input + 4 * stride));
213 __m128i in5 = _mm_load_si128((const __m128i *)(input + 5 * stride));
214 __m128i in6 = _mm_load_si128((const __m128i *)(input + 6 * stride));
215 __m128i in7 = _mm_load_si128((const __m128i *)(input + 7 * stride));
216 __m128i *in[8];
217 int index = 0;
218
219 (void)scan;
220 (void)coeff_ptr;
221
222 // Pre-condition input (shift by two)
223 in0 = _mm_slli_epi16(in0, 2);
224 in1 = _mm_slli_epi16(in1, 2);
225 in2 = _mm_slli_epi16(in2, 2);
226 in3 = _mm_slli_epi16(in3, 2);
227 in4 = _mm_slli_epi16(in4, 2);
228 in5 = _mm_slli_epi16(in5, 2);
229 in6 = _mm_slli_epi16(in6, 2);
230 in7 = _mm_slli_epi16(in7, 2);
231
232 in[0] = &in0;
233 in[1] = &in1;
234 in[2] = &in2;
235 in[3] = &in3;
236 in[4] = &in4;
237 in[5] = &in5;
238 in[6] = &in6;
239 in[7] = &in7;
240
241 // We do two passes, first the columns, then the rows. The results of the
242 // first pass are transposed so that the same column code can be reused. The
243 // results of the second pass are also transposed so that the rows (processed
244 // as columns) are put back in row positions.
245 for (pass = 0; pass < 2; pass++) {
246 // To store results of each pass before the transpose.
247 __m128i res0, res1, res2, res3, res4, res5, res6, res7;
248 // Add/subtract
249 const __m128i q0 = _mm_add_epi16(in0, in7);
250 const __m128i q1 = _mm_add_epi16(in1, in6);
251 const __m128i q2 = _mm_add_epi16(in2, in5);
252 const __m128i q3 = _mm_add_epi16(in3, in4);
253 const __m128i q4 = _mm_sub_epi16(in3, in4);
254 const __m128i q5 = _mm_sub_epi16(in2, in5);
255 const __m128i q6 = _mm_sub_epi16(in1, in6);
256 const __m128i q7 = _mm_sub_epi16(in0, in7);
257 // Work on first four results
258 {
259 // Add/subtract
260 const __m128i r0 = _mm_add_epi16(q0, q3);
261 const __m128i r1 = _mm_add_epi16(q1, q2);
262 const __m128i r2 = _mm_sub_epi16(q1, q2);
263 const __m128i r3 = _mm_sub_epi16(q0, q3);
264 // Interleave to do the multiply by constants which gets us into 32bits
265 const __m128i t0 = _mm_unpacklo_epi16(r0, r1);
266 const __m128i t1 = _mm_unpackhi_epi16(r0, r1);
267 const __m128i t2 = _mm_unpacklo_epi16(r2, r3);
268 const __m128i t3 = _mm_unpackhi_epi16(r2, r3);
269 const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p16_p16);
270 const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p16_p16);
271 const __m128i u2 = _mm_madd_epi16(t0, k__cospi_p16_m16);
272 const __m128i u3 = _mm_madd_epi16(t1, k__cospi_p16_m16);
273 const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p24_p08);
274 const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p24_p08);
275 const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m08_p24);
276 const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m08_p24);
277 // dct_const_round_shift
278 const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
279 const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
280 const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
281 const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
282 const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
283 const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
284 const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
285 const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
286 const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
287 const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
288 const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
289 const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
290 const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
291 const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
292 const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
293 const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
294 // Combine
295 res0 = _mm_packs_epi32(w0, w1);
296 res4 = _mm_packs_epi32(w2, w3);
297 res2 = _mm_packs_epi32(w4, w5);
298 res6 = _mm_packs_epi32(w6, w7);
299 }
300 // Work on next four results
301 {
302 // Interleave to do the multiply by constants which gets us into 32bits
303 const __m128i d0 = _mm_unpacklo_epi16(q6, q5);
304 const __m128i d1 = _mm_unpackhi_epi16(q6, q5);
305 const __m128i e0 = _mm_madd_epi16(d0, k__cospi_p16_m16);
306 const __m128i e1 = _mm_madd_epi16(d1, k__cospi_p16_m16);
307 const __m128i e2 = _mm_madd_epi16(d0, k__cospi_p16_p16);
308 const __m128i e3 = _mm_madd_epi16(d1, k__cospi_p16_p16);
309 // dct_const_round_shift
310 const __m128i f0 = _mm_add_epi32(e0, k__DCT_CONST_ROUNDING);
311 const __m128i f1 = _mm_add_epi32(e1, k__DCT_CONST_ROUNDING);
312 const __m128i f2 = _mm_add_epi32(e2, k__DCT_CONST_ROUNDING);
313 const __m128i f3 = _mm_add_epi32(e3, k__DCT_CONST_ROUNDING);
314 const __m128i s0 = _mm_srai_epi32(f0, DCT_CONST_BITS);
315 const __m128i s1 = _mm_srai_epi32(f1, DCT_CONST_BITS);
316 const __m128i s2 = _mm_srai_epi32(f2, DCT_CONST_BITS);
317 const __m128i s3 = _mm_srai_epi32(f3, DCT_CONST_BITS);
318 // Combine
319 const __m128i r0 = _mm_packs_epi32(s0, s1);
320 const __m128i r1 = _mm_packs_epi32(s2, s3);
321 // Add/subtract
322 const __m128i x0 = _mm_add_epi16(q4, r0);
323 const __m128i x1 = _mm_sub_epi16(q4, r0);
324 const __m128i x2 = _mm_sub_epi16(q7, r1);
325 const __m128i x3 = _mm_add_epi16(q7, r1);
326 // Interleave to do the multiply by constants which gets us into 32bits
327 const __m128i t0 = _mm_unpacklo_epi16(x0, x3);
328 const __m128i t1 = _mm_unpackhi_epi16(x0, x3);
329 const __m128i t2 = _mm_unpacklo_epi16(x1, x2);
330 const __m128i t3 = _mm_unpackhi_epi16(x1, x2);
331 const __m128i u0 = _mm_madd_epi16(t0, k__cospi_p28_p04);
332 const __m128i u1 = _mm_madd_epi16(t1, k__cospi_p28_p04);
333 const __m128i u2 = _mm_madd_epi16(t0, k__cospi_m04_p28);
334 const __m128i u3 = _mm_madd_epi16(t1, k__cospi_m04_p28);
335 const __m128i u4 = _mm_madd_epi16(t2, k__cospi_p12_p20);
336 const __m128i u5 = _mm_madd_epi16(t3, k__cospi_p12_p20);
337 const __m128i u6 = _mm_madd_epi16(t2, k__cospi_m20_p12);
338 const __m128i u7 = _mm_madd_epi16(t3, k__cospi_m20_p12);
339 // dct_const_round_shift
340 const __m128i v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
341 const __m128i v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
342 const __m128i v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
343 const __m128i v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
344 const __m128i v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
345 const __m128i v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
346 const __m128i v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
347 const __m128i v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
348 const __m128i w0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
349 const __m128i w1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
350 const __m128i w2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
351 const __m128i w3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
352 const __m128i w4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
353 const __m128i w5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
354 const __m128i w6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
355 const __m128i w7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
356 // Combine
357 res1 = _mm_packs_epi32(w0, w1);
358 res7 = _mm_packs_epi32(w2, w3);
359 res5 = _mm_packs_epi32(w4, w5);
360 res3 = _mm_packs_epi32(w6, w7);
361 }
362 // Transpose the 8x8.
363 {
364 // 00 01 02 03 04 05 06 07
365 // 10 11 12 13 14 15 16 17
366 // 20 21 22 23 24 25 26 27
367 // 30 31 32 33 34 35 36 37
368 // 40 41 42 43 44 45 46 47
369 // 50 51 52 53 54 55 56 57
370 // 60 61 62 63 64 65 66 67
371 // 70 71 72 73 74 75 76 77
372 const __m128i tr0_0 = _mm_unpacklo_epi16(res0, res1);
373 const __m128i tr0_1 = _mm_unpacklo_epi16(res2, res3);
374 const __m128i tr0_2 = _mm_unpackhi_epi16(res0, res1);
375 const __m128i tr0_3 = _mm_unpackhi_epi16(res2, res3);
376 const __m128i tr0_4 = _mm_unpacklo_epi16(res4, res5);
377 const __m128i tr0_5 = _mm_unpacklo_epi16(res6, res7);
378 const __m128i tr0_6 = _mm_unpackhi_epi16(res4, res5);
379 const __m128i tr0_7 = _mm_unpackhi_epi16(res6, res7);
380 // 00 10 01 11 02 12 03 13
381 // 20 30 21 31 22 32 23 33
382 // 04 14 05 15 06 16 07 17
383 // 24 34 25 35 26 36 27 37
384 // 40 50 41 51 42 52 43 53
385 // 60 70 61 71 62 72 63 73
386 // 54 54 55 55 56 56 57 57
387 // 64 74 65 75 66 76 67 77
388 const __m128i tr1_0 = _mm_unpacklo_epi32(tr0_0, tr0_1);
389 const __m128i tr1_1 = _mm_unpacklo_epi32(tr0_2, tr0_3);
390 const __m128i tr1_2 = _mm_unpackhi_epi32(tr0_0, tr0_1);
391 const __m128i tr1_3 = _mm_unpackhi_epi32(tr0_2, tr0_3);
392 const __m128i tr1_4 = _mm_unpacklo_epi32(tr0_4, tr0_5);
393 const __m128i tr1_5 = _mm_unpacklo_epi32(tr0_6, tr0_7);
394 const __m128i tr1_6 = _mm_unpackhi_epi32(tr0_4, tr0_5);
395 const __m128i tr1_7 = _mm_unpackhi_epi32(tr0_6, tr0_7);
396 // 00 10 20 30 01 11 21 31
397 // 40 50 60 70 41 51 61 71
398 // 02 12 22 32 03 13 23 33
399 // 42 52 62 72 43 53 63 73
400 // 04 14 24 34 05 15 21 36
401 // 44 54 64 74 45 55 61 76
402 // 06 16 26 36 07 17 27 37
403 // 46 56 66 76 47 57 67 77
404 in0 = _mm_unpacklo_epi64(tr1_0, tr1_4);
405 in1 = _mm_unpackhi_epi64(tr1_0, tr1_4);
406 in2 = _mm_unpacklo_epi64(tr1_2, tr1_6);
407 in3 = _mm_unpackhi_epi64(tr1_2, tr1_6);
408 in4 = _mm_unpacklo_epi64(tr1_1, tr1_5);
409 in5 = _mm_unpackhi_epi64(tr1_1, tr1_5);
410 in6 = _mm_unpacklo_epi64(tr1_3, tr1_7);
411 in7 = _mm_unpackhi_epi64(tr1_3, tr1_7);
412 // 00 10 20 30 40 50 60 70
413 // 01 11 21 31 41 51 61 71
414 // 02 12 22 32 42 52 62 72
415 // 03 13 23 33 43 53 63 73
416 // 04 14 24 34 44 54 64 74
417 // 05 15 25 35 45 55 65 75
418 // 06 16 26 36 46 56 66 76
419 // 07 17 27 37 47 57 67 77
420 }
421 }
422 // Post-condition output and store it
423 {
424 // Post-condition (division by two)
425 // division of two 16 bits signed numbers using shifts
426 // n / 2 = (n - (n >> 15)) >> 1
427 const __m128i sign_in0 = _mm_srai_epi16(in0, 15);
428 const __m128i sign_in1 = _mm_srai_epi16(in1, 15);
429 const __m128i sign_in2 = _mm_srai_epi16(in2, 15);
430 const __m128i sign_in3 = _mm_srai_epi16(in3, 15);
431 const __m128i sign_in4 = _mm_srai_epi16(in4, 15);
432 const __m128i sign_in5 = _mm_srai_epi16(in5, 15);
433 const __m128i sign_in6 = _mm_srai_epi16(in6, 15);
434 const __m128i sign_in7 = _mm_srai_epi16(in7, 15);
435 in0 = _mm_sub_epi16(in0, sign_in0);
436 in1 = _mm_sub_epi16(in1, sign_in1);
437 in2 = _mm_sub_epi16(in2, sign_in2);
438 in3 = _mm_sub_epi16(in3, sign_in3);
439 in4 = _mm_sub_epi16(in4, sign_in4);
440 in5 = _mm_sub_epi16(in5, sign_in5);
441 in6 = _mm_sub_epi16(in6, sign_in6);
442 in7 = _mm_sub_epi16(in7, sign_in7);
443 in0 = _mm_srai_epi16(in0, 1);
444 in1 = _mm_srai_epi16(in1, 1);
445 in2 = _mm_srai_epi16(in2, 1);
446 in3 = _mm_srai_epi16(in3, 1);
447 in4 = _mm_srai_epi16(in4, 1);
448 in5 = _mm_srai_epi16(in5, 1);
449 in6 = _mm_srai_epi16(in6, 1);
450 in7 = _mm_srai_epi16(in7, 1);
451 }
452
453 iscan += n_coeffs;
454 qcoeff_ptr += n_coeffs;
455 dqcoeff_ptr += n_coeffs;
456 n_coeffs = -n_coeffs;
457 zero = _mm_setzero_si128();
458
459 if (!skip_block) {
460 __m128i eob;
461 __m128i round, quant, dequant;
462 {
463 __m128i coeff0, coeff1;
464
465 // Setup global values
466 {
467 round = _mm_load_si128((const __m128i *)round_ptr);
468 quant = _mm_load_si128((const __m128i *)quant_ptr);
469 dequant = _mm_load_si128((const __m128i *)dequant_ptr);
470 }
471
472 {
473 __m128i coeff0_sign, coeff1_sign;
474 __m128i qcoeff0, qcoeff1;
475 __m128i qtmp0, qtmp1;
476 // Do DC and first 15 AC
477 coeff0 = *in[0];
478 coeff1 = *in[1];
479
480 // Poor man's sign extract
481 coeff0_sign = _mm_srai_epi16(coeff0, 15);
482 coeff1_sign = _mm_srai_epi16(coeff1, 15);
483 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign);
484 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign);
485 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign);
486 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign);
487
488 qcoeff0 = _mm_adds_epi16(qcoeff0, round);
489 round = _mm_unpackhi_epi64(round, round);
490 qcoeff1 = _mm_adds_epi16(qcoeff1, round);
491 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant);
492 quant = _mm_unpackhi_epi64(quant, quant);
493 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant);
494
495 // Reinsert signs
496 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign);
497 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign);
498 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign);
499 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign);
500
501 store_tran_low(qcoeff0, qcoeff_ptr + n_coeffs);
502 store_tran_low(qcoeff1, qcoeff_ptr + n_coeffs + 8);
503
504 coeff0 = _mm_mullo_epi16(qcoeff0, dequant);
505 dequant = _mm_unpackhi_epi64(dequant, dequant);
506 coeff1 = _mm_mullo_epi16(qcoeff1, dequant);
507
508 store_tran_low(coeff0, dqcoeff_ptr + n_coeffs);
509 store_tran_low(coeff1, dqcoeff_ptr + n_coeffs + 8);
510 }
511
512 {
513 // Scan for eob
514 __m128i zero_coeff0, zero_coeff1;
515 __m128i nzero_coeff0, nzero_coeff1;
516 __m128i iscan0, iscan1;
517 __m128i eob1;
518 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero);
519 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero);
520 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero);
521 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero);
522 iscan0 = _mm_load_si128((const __m128i *)(iscan + n_coeffs));
523 iscan1 = _mm_load_si128((const __m128i *)(iscan + n_coeffs) + 1);
524 // Add one to convert from indices to counts
525 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0);
526 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1);
527 eob = _mm_and_si128(iscan0, nzero_coeff0);
528 eob1 = _mm_and_si128(iscan1, nzero_coeff1);
529 eob = _mm_max_epi16(eob, eob1);
530 }
531 n_coeffs += 8 * 2;
532 }
533
534 // AC only loop
535 index = 2;
536 while (n_coeffs < 0) {
537 __m128i coeff0, coeff1;
538 {
539 __m128i coeff0_sign, coeff1_sign;
540 __m128i qcoeff0, qcoeff1;
541 __m128i qtmp0, qtmp1;
542
543 assert(index < (int)(sizeof(in) / sizeof(in[0])) - 1);
544 coeff0 = *in[index];
545 coeff1 = *in[index + 1];
546
547 // Poor man's sign extract
548 coeff0_sign = _mm_srai_epi16(coeff0, 15);
549 coeff1_sign = _mm_srai_epi16(coeff1, 15);
550 qcoeff0 = _mm_xor_si128(coeff0, coeff0_sign);
551 qcoeff1 = _mm_xor_si128(coeff1, coeff1_sign);
552 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign);
553 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign);
554
555 qcoeff0 = _mm_adds_epi16(qcoeff0, round);
556 qcoeff1 = _mm_adds_epi16(qcoeff1, round);
557 qtmp0 = _mm_mulhi_epi16(qcoeff0, quant);
558 qtmp1 = _mm_mulhi_epi16(qcoeff1, quant);
559
560 // Reinsert signs
561 qcoeff0 = _mm_xor_si128(qtmp0, coeff0_sign);
562 qcoeff1 = _mm_xor_si128(qtmp1, coeff1_sign);
563 qcoeff0 = _mm_sub_epi16(qcoeff0, coeff0_sign);
564 qcoeff1 = _mm_sub_epi16(qcoeff1, coeff1_sign);
565
566 store_tran_low(qcoeff0, qcoeff_ptr + n_coeffs);
567 store_tran_low(qcoeff1, qcoeff_ptr + n_coeffs + 8);
568
569 coeff0 = _mm_mullo_epi16(qcoeff0, dequant);
570 coeff1 = _mm_mullo_epi16(qcoeff1, dequant);
571
572 store_tran_low(coeff0, dqcoeff_ptr + n_coeffs);
573 store_tran_low(coeff1, dqcoeff_ptr + n_coeffs + 8);
574 }
575
576 {
577 // Scan for eob
578 __m128i zero_coeff0, zero_coeff1;
579 __m128i nzero_coeff0, nzero_coeff1;
580 __m128i iscan0, iscan1;
581 __m128i eob0, eob1;
582 zero_coeff0 = _mm_cmpeq_epi16(coeff0, zero);
583 zero_coeff1 = _mm_cmpeq_epi16(coeff1, zero);
584 nzero_coeff0 = _mm_cmpeq_epi16(zero_coeff0, zero);
585 nzero_coeff1 = _mm_cmpeq_epi16(zero_coeff1, zero);
586 iscan0 = _mm_load_si128((const __m128i *)(iscan + n_coeffs));
587 iscan1 = _mm_load_si128((const __m128i *)(iscan + n_coeffs) + 1);
588 // Add one to convert from indices to counts
589 iscan0 = _mm_sub_epi16(iscan0, nzero_coeff0);
590 iscan1 = _mm_sub_epi16(iscan1, nzero_coeff1);
591 eob0 = _mm_and_si128(iscan0, nzero_coeff0);
592 eob1 = _mm_and_si128(iscan1, nzero_coeff1);
593 eob0 = _mm_max_epi16(eob0, eob1);
594 eob = _mm_max_epi16(eob, eob0);
595 }
596 n_coeffs += 8 * 2;
597 index += 2;
598 }
599
600 // Accumulate EOB
601 {
602 __m128i eob_shuffled;
603 eob_shuffled = _mm_shuffle_epi32(eob, 0xe);
604 eob = _mm_max_epi16(eob, eob_shuffled);
605 eob_shuffled = _mm_shufflelo_epi16(eob, 0xe);
606 eob = _mm_max_epi16(eob, eob_shuffled);
607 eob_shuffled = _mm_shufflelo_epi16(eob, 0x1);
608 eob = _mm_max_epi16(eob, eob_shuffled);
609 *eob_ptr = _mm_extract_epi16(eob, 1);
610 }
611 } else {
612 do {
613 store_tran_low(zero, qcoeff_ptr + n_coeffs);
614 store_tran_low(zero, qcoeff_ptr + n_coeffs + 8);
615 store_tran_low(zero, dqcoeff_ptr + n_coeffs);
616 store_tran_low(zero, dqcoeff_ptr + n_coeffs + 8);
617 n_coeffs += 8 * 2;
618 } while (n_coeffs < 0);
619 *eob_ptr = 0;
620 }
621 }
622
623 // load 8x8 array
load_buffer_8x8(const int16_t * input,__m128i * in,int stride)624 static INLINE void load_buffer_8x8(const int16_t *input, __m128i *in,
625 int stride) {
626 in[0] = _mm_load_si128((const __m128i *)(input + 0 * stride));
627 in[1] = _mm_load_si128((const __m128i *)(input + 1 * stride));
628 in[2] = _mm_load_si128((const __m128i *)(input + 2 * stride));
629 in[3] = _mm_load_si128((const __m128i *)(input + 3 * stride));
630 in[4] = _mm_load_si128((const __m128i *)(input + 4 * stride));
631 in[5] = _mm_load_si128((const __m128i *)(input + 5 * stride));
632 in[6] = _mm_load_si128((const __m128i *)(input + 6 * stride));
633 in[7] = _mm_load_si128((const __m128i *)(input + 7 * stride));
634
635 in[0] = _mm_slli_epi16(in[0], 2);
636 in[1] = _mm_slli_epi16(in[1], 2);
637 in[2] = _mm_slli_epi16(in[2], 2);
638 in[3] = _mm_slli_epi16(in[3], 2);
639 in[4] = _mm_slli_epi16(in[4], 2);
640 in[5] = _mm_slli_epi16(in[5], 2);
641 in[6] = _mm_slli_epi16(in[6], 2);
642 in[7] = _mm_slli_epi16(in[7], 2);
643 }
644
645 // right shift and rounding
right_shift_8x8(__m128i * res,const int bit)646 static INLINE void right_shift_8x8(__m128i *res, const int bit) {
647 __m128i sign0 = _mm_srai_epi16(res[0], 15);
648 __m128i sign1 = _mm_srai_epi16(res[1], 15);
649 __m128i sign2 = _mm_srai_epi16(res[2], 15);
650 __m128i sign3 = _mm_srai_epi16(res[3], 15);
651 __m128i sign4 = _mm_srai_epi16(res[4], 15);
652 __m128i sign5 = _mm_srai_epi16(res[5], 15);
653 __m128i sign6 = _mm_srai_epi16(res[6], 15);
654 __m128i sign7 = _mm_srai_epi16(res[7], 15);
655
656 if (bit == 2) {
657 const __m128i const_rounding = _mm_set1_epi16(1);
658 res[0] = _mm_add_epi16(res[0], const_rounding);
659 res[1] = _mm_add_epi16(res[1], const_rounding);
660 res[2] = _mm_add_epi16(res[2], const_rounding);
661 res[3] = _mm_add_epi16(res[3], const_rounding);
662 res[4] = _mm_add_epi16(res[4], const_rounding);
663 res[5] = _mm_add_epi16(res[5], const_rounding);
664 res[6] = _mm_add_epi16(res[6], const_rounding);
665 res[7] = _mm_add_epi16(res[7], const_rounding);
666 }
667
668 res[0] = _mm_sub_epi16(res[0], sign0);
669 res[1] = _mm_sub_epi16(res[1], sign1);
670 res[2] = _mm_sub_epi16(res[2], sign2);
671 res[3] = _mm_sub_epi16(res[3], sign3);
672 res[4] = _mm_sub_epi16(res[4], sign4);
673 res[5] = _mm_sub_epi16(res[5], sign5);
674 res[6] = _mm_sub_epi16(res[6], sign6);
675 res[7] = _mm_sub_epi16(res[7], sign7);
676
677 if (bit == 1) {
678 res[0] = _mm_srai_epi16(res[0], 1);
679 res[1] = _mm_srai_epi16(res[1], 1);
680 res[2] = _mm_srai_epi16(res[2], 1);
681 res[3] = _mm_srai_epi16(res[3], 1);
682 res[4] = _mm_srai_epi16(res[4], 1);
683 res[5] = _mm_srai_epi16(res[5], 1);
684 res[6] = _mm_srai_epi16(res[6], 1);
685 res[7] = _mm_srai_epi16(res[7], 1);
686 } else {
687 res[0] = _mm_srai_epi16(res[0], 2);
688 res[1] = _mm_srai_epi16(res[1], 2);
689 res[2] = _mm_srai_epi16(res[2], 2);
690 res[3] = _mm_srai_epi16(res[3], 2);
691 res[4] = _mm_srai_epi16(res[4], 2);
692 res[5] = _mm_srai_epi16(res[5], 2);
693 res[6] = _mm_srai_epi16(res[6], 2);
694 res[7] = _mm_srai_epi16(res[7], 2);
695 }
696 }
697
698 // write 8x8 array
write_buffer_8x8(tran_low_t * output,__m128i * res,int stride)699 static INLINE void write_buffer_8x8(tran_low_t *output, __m128i *res,
700 int stride) {
701 store_output(&res[0], (output + 0 * stride));
702 store_output(&res[1], (output + 1 * stride));
703 store_output(&res[2], (output + 2 * stride));
704 store_output(&res[3], (output + 3 * stride));
705 store_output(&res[4], (output + 4 * stride));
706 store_output(&res[5], (output + 5 * stride));
707 store_output(&res[6], (output + 6 * stride));
708 store_output(&res[7], (output + 7 * stride));
709 }
710
fdct8_sse2(__m128i * in)711 static void fdct8_sse2(__m128i *in) {
712 // constants
713 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
714 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
715 const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
716 const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
717 const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
718 const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
719 const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
720 const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
721 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
722 __m128i u0, u1, u2, u3, u4, u5, u6, u7;
723 __m128i v0, v1, v2, v3, v4, v5, v6, v7;
724 __m128i s0, s1, s2, s3, s4, s5, s6, s7;
725
726 // stage 1
727 s0 = _mm_add_epi16(in[0], in[7]);
728 s1 = _mm_add_epi16(in[1], in[6]);
729 s2 = _mm_add_epi16(in[2], in[5]);
730 s3 = _mm_add_epi16(in[3], in[4]);
731 s4 = _mm_sub_epi16(in[3], in[4]);
732 s5 = _mm_sub_epi16(in[2], in[5]);
733 s6 = _mm_sub_epi16(in[1], in[6]);
734 s7 = _mm_sub_epi16(in[0], in[7]);
735
736 u0 = _mm_add_epi16(s0, s3);
737 u1 = _mm_add_epi16(s1, s2);
738 u2 = _mm_sub_epi16(s1, s2);
739 u3 = _mm_sub_epi16(s0, s3);
740 // interleave and perform butterfly multiplication/addition
741 v0 = _mm_unpacklo_epi16(u0, u1);
742 v1 = _mm_unpackhi_epi16(u0, u1);
743 v2 = _mm_unpacklo_epi16(u2, u3);
744 v3 = _mm_unpackhi_epi16(u2, u3);
745
746 u0 = _mm_madd_epi16(v0, k__cospi_p16_p16);
747 u1 = _mm_madd_epi16(v1, k__cospi_p16_p16);
748 u2 = _mm_madd_epi16(v0, k__cospi_p16_m16);
749 u3 = _mm_madd_epi16(v1, k__cospi_p16_m16);
750 u4 = _mm_madd_epi16(v2, k__cospi_p24_p08);
751 u5 = _mm_madd_epi16(v3, k__cospi_p24_p08);
752 u6 = _mm_madd_epi16(v2, k__cospi_m08_p24);
753 u7 = _mm_madd_epi16(v3, k__cospi_m08_p24);
754
755 // shift and rounding
756 v0 = _mm_add_epi32(u0, k__DCT_CONST_ROUNDING);
757 v1 = _mm_add_epi32(u1, k__DCT_CONST_ROUNDING);
758 v2 = _mm_add_epi32(u2, k__DCT_CONST_ROUNDING);
759 v3 = _mm_add_epi32(u3, k__DCT_CONST_ROUNDING);
760 v4 = _mm_add_epi32(u4, k__DCT_CONST_ROUNDING);
761 v5 = _mm_add_epi32(u5, k__DCT_CONST_ROUNDING);
762 v6 = _mm_add_epi32(u6, k__DCT_CONST_ROUNDING);
763 v7 = _mm_add_epi32(u7, k__DCT_CONST_ROUNDING);
764
765 u0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
766 u1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
767 u2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
768 u3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
769 u4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
770 u5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
771 u6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
772 u7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
773
774 in[0] = _mm_packs_epi32(u0, u1);
775 in[2] = _mm_packs_epi32(u4, u5);
776 in[4] = _mm_packs_epi32(u2, u3);
777 in[6] = _mm_packs_epi32(u6, u7);
778
779 // stage 2
780 // interleave and perform butterfly multiplication/addition
781 u0 = _mm_unpacklo_epi16(s6, s5);
782 u1 = _mm_unpackhi_epi16(s6, s5);
783 v0 = _mm_madd_epi16(u0, k__cospi_p16_m16);
784 v1 = _mm_madd_epi16(u1, k__cospi_p16_m16);
785 v2 = _mm_madd_epi16(u0, k__cospi_p16_p16);
786 v3 = _mm_madd_epi16(u1, k__cospi_p16_p16);
787
788 // shift and rounding
789 u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
790 u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
791 u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
792 u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
793
794 v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
795 v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
796 v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
797 v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
798
799 u0 = _mm_packs_epi32(v0, v1);
800 u1 = _mm_packs_epi32(v2, v3);
801
802 // stage 3
803 s0 = _mm_add_epi16(s4, u0);
804 s1 = _mm_sub_epi16(s4, u0);
805 s2 = _mm_sub_epi16(s7, u1);
806 s3 = _mm_add_epi16(s7, u1);
807
808 // stage 4
809 u0 = _mm_unpacklo_epi16(s0, s3);
810 u1 = _mm_unpackhi_epi16(s0, s3);
811 u2 = _mm_unpacklo_epi16(s1, s2);
812 u3 = _mm_unpackhi_epi16(s1, s2);
813
814 v0 = _mm_madd_epi16(u0, k__cospi_p28_p04);
815 v1 = _mm_madd_epi16(u1, k__cospi_p28_p04);
816 v2 = _mm_madd_epi16(u2, k__cospi_p12_p20);
817 v3 = _mm_madd_epi16(u3, k__cospi_p12_p20);
818 v4 = _mm_madd_epi16(u2, k__cospi_m20_p12);
819 v5 = _mm_madd_epi16(u3, k__cospi_m20_p12);
820 v6 = _mm_madd_epi16(u0, k__cospi_m04_p28);
821 v7 = _mm_madd_epi16(u1, k__cospi_m04_p28);
822
823 // shift and rounding
824 u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
825 u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
826 u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
827 u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
828 u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING);
829 u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING);
830 u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING);
831 u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING);
832
833 v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
834 v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
835 v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
836 v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
837 v4 = _mm_srai_epi32(u4, DCT_CONST_BITS);
838 v5 = _mm_srai_epi32(u5, DCT_CONST_BITS);
839 v6 = _mm_srai_epi32(u6, DCT_CONST_BITS);
840 v7 = _mm_srai_epi32(u7, DCT_CONST_BITS);
841
842 in[1] = _mm_packs_epi32(v0, v1);
843 in[3] = _mm_packs_epi32(v4, v5);
844 in[5] = _mm_packs_epi32(v2, v3);
845 in[7] = _mm_packs_epi32(v6, v7);
846
847 // transpose
848 transpose_16bit_8x8(in, in);
849 }
850
fadst8_sse2(__m128i * in)851 static void fadst8_sse2(__m128i *in) {
852 // Constants
853 const __m128i k__cospi_p02_p30 = pair_set_epi16(cospi_2_64, cospi_30_64);
854 const __m128i k__cospi_p30_m02 = pair_set_epi16(cospi_30_64, -cospi_2_64);
855 const __m128i k__cospi_p10_p22 = pair_set_epi16(cospi_10_64, cospi_22_64);
856 const __m128i k__cospi_p22_m10 = pair_set_epi16(cospi_22_64, -cospi_10_64);
857 const __m128i k__cospi_p18_p14 = pair_set_epi16(cospi_18_64, cospi_14_64);
858 const __m128i k__cospi_p14_m18 = pair_set_epi16(cospi_14_64, -cospi_18_64);
859 const __m128i k__cospi_p26_p06 = pair_set_epi16(cospi_26_64, cospi_6_64);
860 const __m128i k__cospi_p06_m26 = pair_set_epi16(cospi_6_64, -cospi_26_64);
861 const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
862 const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
863 const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64);
864 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
865 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
866 const __m128i k__const_0 = _mm_set1_epi16(0);
867 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
868
869 __m128i u0, u1, u2, u3, u4, u5, u6, u7, u8, u9, u10, u11, u12, u13, u14, u15;
870 __m128i v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15;
871 __m128i w0, w1, w2, w3, w4, w5, w6, w7, w8, w9, w10, w11, w12, w13, w14, w15;
872 __m128i s0, s1, s2, s3, s4, s5, s6, s7;
873 __m128i in0, in1, in2, in3, in4, in5, in6, in7;
874
875 // properly aligned for butterfly input
876 in0 = in[7];
877 in1 = in[0];
878 in2 = in[5];
879 in3 = in[2];
880 in4 = in[3];
881 in5 = in[4];
882 in6 = in[1];
883 in7 = in[6];
884
885 // column transformation
886 // stage 1
887 // interleave and multiply/add into 32-bit integer
888 s0 = _mm_unpacklo_epi16(in0, in1);
889 s1 = _mm_unpackhi_epi16(in0, in1);
890 s2 = _mm_unpacklo_epi16(in2, in3);
891 s3 = _mm_unpackhi_epi16(in2, in3);
892 s4 = _mm_unpacklo_epi16(in4, in5);
893 s5 = _mm_unpackhi_epi16(in4, in5);
894 s6 = _mm_unpacklo_epi16(in6, in7);
895 s7 = _mm_unpackhi_epi16(in6, in7);
896
897 u0 = _mm_madd_epi16(s0, k__cospi_p02_p30);
898 u1 = _mm_madd_epi16(s1, k__cospi_p02_p30);
899 u2 = _mm_madd_epi16(s0, k__cospi_p30_m02);
900 u3 = _mm_madd_epi16(s1, k__cospi_p30_m02);
901 u4 = _mm_madd_epi16(s2, k__cospi_p10_p22);
902 u5 = _mm_madd_epi16(s3, k__cospi_p10_p22);
903 u6 = _mm_madd_epi16(s2, k__cospi_p22_m10);
904 u7 = _mm_madd_epi16(s3, k__cospi_p22_m10);
905 u8 = _mm_madd_epi16(s4, k__cospi_p18_p14);
906 u9 = _mm_madd_epi16(s5, k__cospi_p18_p14);
907 u10 = _mm_madd_epi16(s4, k__cospi_p14_m18);
908 u11 = _mm_madd_epi16(s5, k__cospi_p14_m18);
909 u12 = _mm_madd_epi16(s6, k__cospi_p26_p06);
910 u13 = _mm_madd_epi16(s7, k__cospi_p26_p06);
911 u14 = _mm_madd_epi16(s6, k__cospi_p06_m26);
912 u15 = _mm_madd_epi16(s7, k__cospi_p06_m26);
913
914 // addition
915 w0 = _mm_add_epi32(u0, u8);
916 w1 = _mm_add_epi32(u1, u9);
917 w2 = _mm_add_epi32(u2, u10);
918 w3 = _mm_add_epi32(u3, u11);
919 w4 = _mm_add_epi32(u4, u12);
920 w5 = _mm_add_epi32(u5, u13);
921 w6 = _mm_add_epi32(u6, u14);
922 w7 = _mm_add_epi32(u7, u15);
923 w8 = _mm_sub_epi32(u0, u8);
924 w9 = _mm_sub_epi32(u1, u9);
925 w10 = _mm_sub_epi32(u2, u10);
926 w11 = _mm_sub_epi32(u3, u11);
927 w12 = _mm_sub_epi32(u4, u12);
928 w13 = _mm_sub_epi32(u5, u13);
929 w14 = _mm_sub_epi32(u6, u14);
930 w15 = _mm_sub_epi32(u7, u15);
931
932 // shift and rounding
933 v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING);
934 v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING);
935 v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING);
936 v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING);
937 v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING);
938 v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING);
939 v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING);
940 v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING);
941 v8 = _mm_add_epi32(w8, k__DCT_CONST_ROUNDING);
942 v9 = _mm_add_epi32(w9, k__DCT_CONST_ROUNDING);
943 v10 = _mm_add_epi32(w10, k__DCT_CONST_ROUNDING);
944 v11 = _mm_add_epi32(w11, k__DCT_CONST_ROUNDING);
945 v12 = _mm_add_epi32(w12, k__DCT_CONST_ROUNDING);
946 v13 = _mm_add_epi32(w13, k__DCT_CONST_ROUNDING);
947 v14 = _mm_add_epi32(w14, k__DCT_CONST_ROUNDING);
948 v15 = _mm_add_epi32(w15, k__DCT_CONST_ROUNDING);
949
950 u0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
951 u1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
952 u2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
953 u3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
954 u4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
955 u5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
956 u6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
957 u7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
958 u8 = _mm_srai_epi32(v8, DCT_CONST_BITS);
959 u9 = _mm_srai_epi32(v9, DCT_CONST_BITS);
960 u10 = _mm_srai_epi32(v10, DCT_CONST_BITS);
961 u11 = _mm_srai_epi32(v11, DCT_CONST_BITS);
962 u12 = _mm_srai_epi32(v12, DCT_CONST_BITS);
963 u13 = _mm_srai_epi32(v13, DCT_CONST_BITS);
964 u14 = _mm_srai_epi32(v14, DCT_CONST_BITS);
965 u15 = _mm_srai_epi32(v15, DCT_CONST_BITS);
966
967 // back to 16-bit and pack 8 integers into __m128i
968 in[0] = _mm_packs_epi32(u0, u1);
969 in[1] = _mm_packs_epi32(u2, u3);
970 in[2] = _mm_packs_epi32(u4, u5);
971 in[3] = _mm_packs_epi32(u6, u7);
972 in[4] = _mm_packs_epi32(u8, u9);
973 in[5] = _mm_packs_epi32(u10, u11);
974 in[6] = _mm_packs_epi32(u12, u13);
975 in[7] = _mm_packs_epi32(u14, u15);
976
977 // stage 2
978 s0 = _mm_add_epi16(in[0], in[2]);
979 s1 = _mm_add_epi16(in[1], in[3]);
980 s2 = _mm_sub_epi16(in[0], in[2]);
981 s3 = _mm_sub_epi16(in[1], in[3]);
982 u0 = _mm_unpacklo_epi16(in[4], in[5]);
983 u1 = _mm_unpackhi_epi16(in[4], in[5]);
984 u2 = _mm_unpacklo_epi16(in[6], in[7]);
985 u3 = _mm_unpackhi_epi16(in[6], in[7]);
986
987 v0 = _mm_madd_epi16(u0, k__cospi_p08_p24);
988 v1 = _mm_madd_epi16(u1, k__cospi_p08_p24);
989 v2 = _mm_madd_epi16(u0, k__cospi_p24_m08);
990 v3 = _mm_madd_epi16(u1, k__cospi_p24_m08);
991 v4 = _mm_madd_epi16(u2, k__cospi_m24_p08);
992 v5 = _mm_madd_epi16(u3, k__cospi_m24_p08);
993 v6 = _mm_madd_epi16(u2, k__cospi_p08_p24);
994 v7 = _mm_madd_epi16(u3, k__cospi_p08_p24);
995
996 w0 = _mm_add_epi32(v0, v4);
997 w1 = _mm_add_epi32(v1, v5);
998 w2 = _mm_add_epi32(v2, v6);
999 w3 = _mm_add_epi32(v3, v7);
1000 w4 = _mm_sub_epi32(v0, v4);
1001 w5 = _mm_sub_epi32(v1, v5);
1002 w6 = _mm_sub_epi32(v2, v6);
1003 w7 = _mm_sub_epi32(v3, v7);
1004
1005 v0 = _mm_add_epi32(w0, k__DCT_CONST_ROUNDING);
1006 v1 = _mm_add_epi32(w1, k__DCT_CONST_ROUNDING);
1007 v2 = _mm_add_epi32(w2, k__DCT_CONST_ROUNDING);
1008 v3 = _mm_add_epi32(w3, k__DCT_CONST_ROUNDING);
1009 v4 = _mm_add_epi32(w4, k__DCT_CONST_ROUNDING);
1010 v5 = _mm_add_epi32(w5, k__DCT_CONST_ROUNDING);
1011 v6 = _mm_add_epi32(w6, k__DCT_CONST_ROUNDING);
1012 v7 = _mm_add_epi32(w7, k__DCT_CONST_ROUNDING);
1013
1014 u0 = _mm_srai_epi32(v0, DCT_CONST_BITS);
1015 u1 = _mm_srai_epi32(v1, DCT_CONST_BITS);
1016 u2 = _mm_srai_epi32(v2, DCT_CONST_BITS);
1017 u3 = _mm_srai_epi32(v3, DCT_CONST_BITS);
1018 u4 = _mm_srai_epi32(v4, DCT_CONST_BITS);
1019 u5 = _mm_srai_epi32(v5, DCT_CONST_BITS);
1020 u6 = _mm_srai_epi32(v6, DCT_CONST_BITS);
1021 u7 = _mm_srai_epi32(v7, DCT_CONST_BITS);
1022
1023 // back to 16-bit intergers
1024 s4 = _mm_packs_epi32(u0, u1);
1025 s5 = _mm_packs_epi32(u2, u3);
1026 s6 = _mm_packs_epi32(u4, u5);
1027 s7 = _mm_packs_epi32(u6, u7);
1028
1029 // stage 3
1030 u0 = _mm_unpacklo_epi16(s2, s3);
1031 u1 = _mm_unpackhi_epi16(s2, s3);
1032 u2 = _mm_unpacklo_epi16(s6, s7);
1033 u3 = _mm_unpackhi_epi16(s6, s7);
1034
1035 v0 = _mm_madd_epi16(u0, k__cospi_p16_p16);
1036 v1 = _mm_madd_epi16(u1, k__cospi_p16_p16);
1037 v2 = _mm_madd_epi16(u0, k__cospi_p16_m16);
1038 v3 = _mm_madd_epi16(u1, k__cospi_p16_m16);
1039 v4 = _mm_madd_epi16(u2, k__cospi_p16_p16);
1040 v5 = _mm_madd_epi16(u3, k__cospi_p16_p16);
1041 v6 = _mm_madd_epi16(u2, k__cospi_p16_m16);
1042 v7 = _mm_madd_epi16(u3, k__cospi_p16_m16);
1043
1044 u0 = _mm_add_epi32(v0, k__DCT_CONST_ROUNDING);
1045 u1 = _mm_add_epi32(v1, k__DCT_CONST_ROUNDING);
1046 u2 = _mm_add_epi32(v2, k__DCT_CONST_ROUNDING);
1047 u3 = _mm_add_epi32(v3, k__DCT_CONST_ROUNDING);
1048 u4 = _mm_add_epi32(v4, k__DCT_CONST_ROUNDING);
1049 u5 = _mm_add_epi32(v5, k__DCT_CONST_ROUNDING);
1050 u6 = _mm_add_epi32(v6, k__DCT_CONST_ROUNDING);
1051 u7 = _mm_add_epi32(v7, k__DCT_CONST_ROUNDING);
1052
1053 v0 = _mm_srai_epi32(u0, DCT_CONST_BITS);
1054 v1 = _mm_srai_epi32(u1, DCT_CONST_BITS);
1055 v2 = _mm_srai_epi32(u2, DCT_CONST_BITS);
1056 v3 = _mm_srai_epi32(u3, DCT_CONST_BITS);
1057 v4 = _mm_srai_epi32(u4, DCT_CONST_BITS);
1058 v5 = _mm_srai_epi32(u5, DCT_CONST_BITS);
1059 v6 = _mm_srai_epi32(u6, DCT_CONST_BITS);
1060 v7 = _mm_srai_epi32(u7, DCT_CONST_BITS);
1061
1062 s2 = _mm_packs_epi32(v0, v1);
1063 s3 = _mm_packs_epi32(v2, v3);
1064 s6 = _mm_packs_epi32(v4, v5);
1065 s7 = _mm_packs_epi32(v6, v7);
1066
1067 // FIXME(jingning): do subtract using bit inversion?
1068 in[0] = s0;
1069 in[1] = _mm_sub_epi16(k__const_0, s4);
1070 in[2] = s6;
1071 in[3] = _mm_sub_epi16(k__const_0, s2);
1072 in[4] = s3;
1073 in[5] = _mm_sub_epi16(k__const_0, s7);
1074 in[6] = s5;
1075 in[7] = _mm_sub_epi16(k__const_0, s1);
1076
1077 // transpose
1078 transpose_16bit_8x8(in, in);
1079 }
1080
vp9_fht8x8_sse2(const int16_t * input,tran_low_t * output,int stride,int tx_type)1081 void vp9_fht8x8_sse2(const int16_t *input, tran_low_t *output, int stride,
1082 int tx_type) {
1083 __m128i in[8];
1084
1085 switch (tx_type) {
1086 case DCT_DCT: vpx_fdct8x8_sse2(input, output, stride); break;
1087 case ADST_DCT:
1088 load_buffer_8x8(input, in, stride);
1089 fadst8_sse2(in);
1090 fdct8_sse2(in);
1091 right_shift_8x8(in, 1);
1092 write_buffer_8x8(output, in, 8);
1093 break;
1094 case DCT_ADST:
1095 load_buffer_8x8(input, in, stride);
1096 fdct8_sse2(in);
1097 fadst8_sse2(in);
1098 right_shift_8x8(in, 1);
1099 write_buffer_8x8(output, in, 8);
1100 break;
1101 default:
1102 assert(tx_type == ADST_ADST);
1103 load_buffer_8x8(input, in, stride);
1104 fadst8_sse2(in);
1105 fadst8_sse2(in);
1106 right_shift_8x8(in, 1);
1107 write_buffer_8x8(output, in, 8);
1108 break;
1109 }
1110 }
1111
load_buffer_16x16(const int16_t * input,__m128i * in0,__m128i * in1,int stride)1112 static INLINE void load_buffer_16x16(const int16_t *input, __m128i *in0,
1113 __m128i *in1, int stride) {
1114 // load first 8 columns
1115 load_buffer_8x8(input, in0, stride);
1116 load_buffer_8x8(input + 8 * stride, in0 + 8, stride);
1117
1118 input += 8;
1119 // load second 8 columns
1120 load_buffer_8x8(input, in1, stride);
1121 load_buffer_8x8(input + 8 * stride, in1 + 8, stride);
1122 }
1123
write_buffer_16x16(tran_low_t * output,__m128i * in0,__m128i * in1,int stride)1124 static INLINE void write_buffer_16x16(tran_low_t *output, __m128i *in0,
1125 __m128i *in1, int stride) {
1126 // write first 8 columns
1127 write_buffer_8x8(output, in0, stride);
1128 write_buffer_8x8(output + 8 * stride, in0 + 8, stride);
1129 // write second 8 columns
1130 output += 8;
1131 write_buffer_8x8(output, in1, stride);
1132 write_buffer_8x8(output + 8 * stride, in1 + 8, stride);
1133 }
1134
right_shift_16x16(__m128i * res0,__m128i * res1)1135 static INLINE void right_shift_16x16(__m128i *res0, __m128i *res1) {
1136 // perform rounding operations
1137 right_shift_8x8(res0, 2);
1138 right_shift_8x8(res0 + 8, 2);
1139 right_shift_8x8(res1, 2);
1140 right_shift_8x8(res1 + 8, 2);
1141 }
1142
fdct16_8col(__m128i * in)1143 static void fdct16_8col(__m128i *in) {
1144 // perform 16x16 1-D DCT for 8 columns
1145 __m128i i[8], s[8], p[8], t[8], u[16], v[16];
1146 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
1147 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
1148 const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
1149 const __m128i k__cospi_p24_p08 = pair_set_epi16(cospi_24_64, cospi_8_64);
1150 const __m128i k__cospi_p08_m24 = pair_set_epi16(cospi_8_64, -cospi_24_64);
1151 const __m128i k__cospi_m08_p24 = pair_set_epi16(-cospi_8_64, cospi_24_64);
1152 const __m128i k__cospi_p28_p04 = pair_set_epi16(cospi_28_64, cospi_4_64);
1153 const __m128i k__cospi_m04_p28 = pair_set_epi16(-cospi_4_64, cospi_28_64);
1154 const __m128i k__cospi_p12_p20 = pair_set_epi16(cospi_12_64, cospi_20_64);
1155 const __m128i k__cospi_m20_p12 = pair_set_epi16(-cospi_20_64, cospi_12_64);
1156 const __m128i k__cospi_p30_p02 = pair_set_epi16(cospi_30_64, cospi_2_64);
1157 const __m128i k__cospi_p14_p18 = pair_set_epi16(cospi_14_64, cospi_18_64);
1158 const __m128i k__cospi_m02_p30 = pair_set_epi16(-cospi_2_64, cospi_30_64);
1159 const __m128i k__cospi_m18_p14 = pair_set_epi16(-cospi_18_64, cospi_14_64);
1160 const __m128i k__cospi_p22_p10 = pair_set_epi16(cospi_22_64, cospi_10_64);
1161 const __m128i k__cospi_p06_p26 = pair_set_epi16(cospi_6_64, cospi_26_64);
1162 const __m128i k__cospi_m10_p22 = pair_set_epi16(-cospi_10_64, cospi_22_64);
1163 const __m128i k__cospi_m26_p06 = pair_set_epi16(-cospi_26_64, cospi_6_64);
1164 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
1165
1166 // stage 1
1167 i[0] = _mm_add_epi16(in[0], in[15]);
1168 i[1] = _mm_add_epi16(in[1], in[14]);
1169 i[2] = _mm_add_epi16(in[2], in[13]);
1170 i[3] = _mm_add_epi16(in[3], in[12]);
1171 i[4] = _mm_add_epi16(in[4], in[11]);
1172 i[5] = _mm_add_epi16(in[5], in[10]);
1173 i[6] = _mm_add_epi16(in[6], in[9]);
1174 i[7] = _mm_add_epi16(in[7], in[8]);
1175
1176 s[0] = _mm_sub_epi16(in[7], in[8]);
1177 s[1] = _mm_sub_epi16(in[6], in[9]);
1178 s[2] = _mm_sub_epi16(in[5], in[10]);
1179 s[3] = _mm_sub_epi16(in[4], in[11]);
1180 s[4] = _mm_sub_epi16(in[3], in[12]);
1181 s[5] = _mm_sub_epi16(in[2], in[13]);
1182 s[6] = _mm_sub_epi16(in[1], in[14]);
1183 s[7] = _mm_sub_epi16(in[0], in[15]);
1184
1185 p[0] = _mm_add_epi16(i[0], i[7]);
1186 p[1] = _mm_add_epi16(i[1], i[6]);
1187 p[2] = _mm_add_epi16(i[2], i[5]);
1188 p[3] = _mm_add_epi16(i[3], i[4]);
1189 p[4] = _mm_sub_epi16(i[3], i[4]);
1190 p[5] = _mm_sub_epi16(i[2], i[5]);
1191 p[6] = _mm_sub_epi16(i[1], i[6]);
1192 p[7] = _mm_sub_epi16(i[0], i[7]);
1193
1194 u[0] = _mm_add_epi16(p[0], p[3]);
1195 u[1] = _mm_add_epi16(p[1], p[2]);
1196 u[2] = _mm_sub_epi16(p[1], p[2]);
1197 u[3] = _mm_sub_epi16(p[0], p[3]);
1198
1199 v[0] = _mm_unpacklo_epi16(u[0], u[1]);
1200 v[1] = _mm_unpackhi_epi16(u[0], u[1]);
1201 v[2] = _mm_unpacklo_epi16(u[2], u[3]);
1202 v[3] = _mm_unpackhi_epi16(u[2], u[3]);
1203
1204 u[0] = _mm_madd_epi16(v[0], k__cospi_p16_p16);
1205 u[1] = _mm_madd_epi16(v[1], k__cospi_p16_p16);
1206 u[2] = _mm_madd_epi16(v[0], k__cospi_p16_m16);
1207 u[3] = _mm_madd_epi16(v[1], k__cospi_p16_m16);
1208 u[4] = _mm_madd_epi16(v[2], k__cospi_p24_p08);
1209 u[5] = _mm_madd_epi16(v[3], k__cospi_p24_p08);
1210 u[6] = _mm_madd_epi16(v[2], k__cospi_m08_p24);
1211 u[7] = _mm_madd_epi16(v[3], k__cospi_m08_p24);
1212
1213 v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
1214 v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
1215 v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
1216 v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
1217 v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
1218 v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
1219 v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
1220 v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
1221
1222 u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
1223 u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
1224 u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
1225 u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
1226 u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS);
1227 u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS);
1228 u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS);
1229 u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS);
1230
1231 in[0] = _mm_packs_epi32(u[0], u[1]);
1232 in[4] = _mm_packs_epi32(u[4], u[5]);
1233 in[8] = _mm_packs_epi32(u[2], u[3]);
1234 in[12] = _mm_packs_epi32(u[6], u[7]);
1235
1236 u[0] = _mm_unpacklo_epi16(p[5], p[6]);
1237 u[1] = _mm_unpackhi_epi16(p[5], p[6]);
1238 v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16);
1239 v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16);
1240 v[2] = _mm_madd_epi16(u[0], k__cospi_p16_p16);
1241 v[3] = _mm_madd_epi16(u[1], k__cospi_p16_p16);
1242
1243 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1244 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1245 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1246 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1247
1248 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1249 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1250 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1251 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1252
1253 u[0] = _mm_packs_epi32(v[0], v[1]);
1254 u[1] = _mm_packs_epi32(v[2], v[3]);
1255
1256 t[0] = _mm_add_epi16(p[4], u[0]);
1257 t[1] = _mm_sub_epi16(p[4], u[0]);
1258 t[2] = _mm_sub_epi16(p[7], u[1]);
1259 t[3] = _mm_add_epi16(p[7], u[1]);
1260
1261 u[0] = _mm_unpacklo_epi16(t[0], t[3]);
1262 u[1] = _mm_unpackhi_epi16(t[0], t[3]);
1263 u[2] = _mm_unpacklo_epi16(t[1], t[2]);
1264 u[3] = _mm_unpackhi_epi16(t[1], t[2]);
1265
1266 v[0] = _mm_madd_epi16(u[0], k__cospi_p28_p04);
1267 v[1] = _mm_madd_epi16(u[1], k__cospi_p28_p04);
1268 v[2] = _mm_madd_epi16(u[2], k__cospi_p12_p20);
1269 v[3] = _mm_madd_epi16(u[3], k__cospi_p12_p20);
1270 v[4] = _mm_madd_epi16(u[2], k__cospi_m20_p12);
1271 v[5] = _mm_madd_epi16(u[3], k__cospi_m20_p12);
1272 v[6] = _mm_madd_epi16(u[0], k__cospi_m04_p28);
1273 v[7] = _mm_madd_epi16(u[1], k__cospi_m04_p28);
1274
1275 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1276 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1277 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1278 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1279 u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
1280 u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
1281 u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
1282 u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
1283
1284 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1285 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1286 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1287 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1288 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1289 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1290 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1291 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1292
1293 in[2] = _mm_packs_epi32(v[0], v[1]);
1294 in[6] = _mm_packs_epi32(v[4], v[5]);
1295 in[10] = _mm_packs_epi32(v[2], v[3]);
1296 in[14] = _mm_packs_epi32(v[6], v[7]);
1297
1298 // stage 2
1299 u[0] = _mm_unpacklo_epi16(s[2], s[5]);
1300 u[1] = _mm_unpackhi_epi16(s[2], s[5]);
1301 u[2] = _mm_unpacklo_epi16(s[3], s[4]);
1302 u[3] = _mm_unpackhi_epi16(s[3], s[4]);
1303
1304 v[0] = _mm_madd_epi16(u[0], k__cospi_m16_p16);
1305 v[1] = _mm_madd_epi16(u[1], k__cospi_m16_p16);
1306 v[2] = _mm_madd_epi16(u[2], k__cospi_m16_p16);
1307 v[3] = _mm_madd_epi16(u[3], k__cospi_m16_p16);
1308 v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16);
1309 v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16);
1310 v[6] = _mm_madd_epi16(u[0], k__cospi_p16_p16);
1311 v[7] = _mm_madd_epi16(u[1], k__cospi_p16_p16);
1312
1313 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1314 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1315 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1316 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1317 u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
1318 u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
1319 u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
1320 u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
1321
1322 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1323 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1324 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1325 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1326 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1327 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1328 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1329 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1330
1331 t[2] = _mm_packs_epi32(v[0], v[1]);
1332 t[3] = _mm_packs_epi32(v[2], v[3]);
1333 t[4] = _mm_packs_epi32(v[4], v[5]);
1334 t[5] = _mm_packs_epi32(v[6], v[7]);
1335
1336 // stage 3
1337 p[0] = _mm_add_epi16(s[0], t[3]);
1338 p[1] = _mm_add_epi16(s[1], t[2]);
1339 p[2] = _mm_sub_epi16(s[1], t[2]);
1340 p[3] = _mm_sub_epi16(s[0], t[3]);
1341 p[4] = _mm_sub_epi16(s[7], t[4]);
1342 p[5] = _mm_sub_epi16(s[6], t[5]);
1343 p[6] = _mm_add_epi16(s[6], t[5]);
1344 p[7] = _mm_add_epi16(s[7], t[4]);
1345
1346 // stage 4
1347 u[0] = _mm_unpacklo_epi16(p[1], p[6]);
1348 u[1] = _mm_unpackhi_epi16(p[1], p[6]);
1349 u[2] = _mm_unpacklo_epi16(p[2], p[5]);
1350 u[3] = _mm_unpackhi_epi16(p[2], p[5]);
1351
1352 v[0] = _mm_madd_epi16(u[0], k__cospi_m08_p24);
1353 v[1] = _mm_madd_epi16(u[1], k__cospi_m08_p24);
1354 v[2] = _mm_madd_epi16(u[2], k__cospi_p24_p08);
1355 v[3] = _mm_madd_epi16(u[3], k__cospi_p24_p08);
1356 v[4] = _mm_madd_epi16(u[2], k__cospi_p08_m24);
1357 v[5] = _mm_madd_epi16(u[3], k__cospi_p08_m24);
1358 v[6] = _mm_madd_epi16(u[0], k__cospi_p24_p08);
1359 v[7] = _mm_madd_epi16(u[1], k__cospi_p24_p08);
1360
1361 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1362 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1363 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1364 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1365 u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
1366 u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
1367 u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
1368 u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
1369
1370 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1371 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1372 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1373 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1374 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1375 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1376 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1377 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1378
1379 t[1] = _mm_packs_epi32(v[0], v[1]);
1380 t[2] = _mm_packs_epi32(v[2], v[3]);
1381 t[5] = _mm_packs_epi32(v[4], v[5]);
1382 t[6] = _mm_packs_epi32(v[6], v[7]);
1383
1384 // stage 5
1385 s[0] = _mm_add_epi16(p[0], t[1]);
1386 s[1] = _mm_sub_epi16(p[0], t[1]);
1387 s[2] = _mm_add_epi16(p[3], t[2]);
1388 s[3] = _mm_sub_epi16(p[3], t[2]);
1389 s[4] = _mm_sub_epi16(p[4], t[5]);
1390 s[5] = _mm_add_epi16(p[4], t[5]);
1391 s[6] = _mm_sub_epi16(p[7], t[6]);
1392 s[7] = _mm_add_epi16(p[7], t[6]);
1393
1394 // stage 6
1395 u[0] = _mm_unpacklo_epi16(s[0], s[7]);
1396 u[1] = _mm_unpackhi_epi16(s[0], s[7]);
1397 u[2] = _mm_unpacklo_epi16(s[1], s[6]);
1398 u[3] = _mm_unpackhi_epi16(s[1], s[6]);
1399 u[4] = _mm_unpacklo_epi16(s[2], s[5]);
1400 u[5] = _mm_unpackhi_epi16(s[2], s[5]);
1401 u[6] = _mm_unpacklo_epi16(s[3], s[4]);
1402 u[7] = _mm_unpackhi_epi16(s[3], s[4]);
1403
1404 v[0] = _mm_madd_epi16(u[0], k__cospi_p30_p02);
1405 v[1] = _mm_madd_epi16(u[1], k__cospi_p30_p02);
1406 v[2] = _mm_madd_epi16(u[2], k__cospi_p14_p18);
1407 v[3] = _mm_madd_epi16(u[3], k__cospi_p14_p18);
1408 v[4] = _mm_madd_epi16(u[4], k__cospi_p22_p10);
1409 v[5] = _mm_madd_epi16(u[5], k__cospi_p22_p10);
1410 v[6] = _mm_madd_epi16(u[6], k__cospi_p06_p26);
1411 v[7] = _mm_madd_epi16(u[7], k__cospi_p06_p26);
1412 v[8] = _mm_madd_epi16(u[6], k__cospi_m26_p06);
1413 v[9] = _mm_madd_epi16(u[7], k__cospi_m26_p06);
1414 v[10] = _mm_madd_epi16(u[4], k__cospi_m10_p22);
1415 v[11] = _mm_madd_epi16(u[5], k__cospi_m10_p22);
1416 v[12] = _mm_madd_epi16(u[2], k__cospi_m18_p14);
1417 v[13] = _mm_madd_epi16(u[3], k__cospi_m18_p14);
1418 v[14] = _mm_madd_epi16(u[0], k__cospi_m02_p30);
1419 v[15] = _mm_madd_epi16(u[1], k__cospi_m02_p30);
1420
1421 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1422 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1423 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1424 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1425 u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
1426 u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
1427 u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
1428 u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
1429 u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
1430 u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
1431 u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
1432 u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
1433 u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
1434 u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
1435 u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
1436 u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
1437
1438 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1439 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1440 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1441 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1442 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1443 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1444 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1445 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1446 v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
1447 v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
1448 v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
1449 v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
1450 v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
1451 v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
1452 v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
1453 v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
1454
1455 in[1] = _mm_packs_epi32(v[0], v[1]);
1456 in[9] = _mm_packs_epi32(v[2], v[3]);
1457 in[5] = _mm_packs_epi32(v[4], v[5]);
1458 in[13] = _mm_packs_epi32(v[6], v[7]);
1459 in[3] = _mm_packs_epi32(v[8], v[9]);
1460 in[11] = _mm_packs_epi32(v[10], v[11]);
1461 in[7] = _mm_packs_epi32(v[12], v[13]);
1462 in[15] = _mm_packs_epi32(v[14], v[15]);
1463 }
1464
fadst16_8col(__m128i * in)1465 static void fadst16_8col(__m128i *in) {
1466 // perform 16x16 1-D ADST for 8 columns
1467 __m128i s[16], x[16], u[32], v[32];
1468 const __m128i k__cospi_p01_p31 = pair_set_epi16(cospi_1_64, cospi_31_64);
1469 const __m128i k__cospi_p31_m01 = pair_set_epi16(cospi_31_64, -cospi_1_64);
1470 const __m128i k__cospi_p05_p27 = pair_set_epi16(cospi_5_64, cospi_27_64);
1471 const __m128i k__cospi_p27_m05 = pair_set_epi16(cospi_27_64, -cospi_5_64);
1472 const __m128i k__cospi_p09_p23 = pair_set_epi16(cospi_9_64, cospi_23_64);
1473 const __m128i k__cospi_p23_m09 = pair_set_epi16(cospi_23_64, -cospi_9_64);
1474 const __m128i k__cospi_p13_p19 = pair_set_epi16(cospi_13_64, cospi_19_64);
1475 const __m128i k__cospi_p19_m13 = pair_set_epi16(cospi_19_64, -cospi_13_64);
1476 const __m128i k__cospi_p17_p15 = pair_set_epi16(cospi_17_64, cospi_15_64);
1477 const __m128i k__cospi_p15_m17 = pair_set_epi16(cospi_15_64, -cospi_17_64);
1478 const __m128i k__cospi_p21_p11 = pair_set_epi16(cospi_21_64, cospi_11_64);
1479 const __m128i k__cospi_p11_m21 = pair_set_epi16(cospi_11_64, -cospi_21_64);
1480 const __m128i k__cospi_p25_p07 = pair_set_epi16(cospi_25_64, cospi_7_64);
1481 const __m128i k__cospi_p07_m25 = pair_set_epi16(cospi_7_64, -cospi_25_64);
1482 const __m128i k__cospi_p29_p03 = pair_set_epi16(cospi_29_64, cospi_3_64);
1483 const __m128i k__cospi_p03_m29 = pair_set_epi16(cospi_3_64, -cospi_29_64);
1484 const __m128i k__cospi_p04_p28 = pair_set_epi16(cospi_4_64, cospi_28_64);
1485 const __m128i k__cospi_p28_m04 = pair_set_epi16(cospi_28_64, -cospi_4_64);
1486 const __m128i k__cospi_p20_p12 = pair_set_epi16(cospi_20_64, cospi_12_64);
1487 const __m128i k__cospi_p12_m20 = pair_set_epi16(cospi_12_64, -cospi_20_64);
1488 const __m128i k__cospi_m28_p04 = pair_set_epi16(-cospi_28_64, cospi_4_64);
1489 const __m128i k__cospi_m12_p20 = pair_set_epi16(-cospi_12_64, cospi_20_64);
1490 const __m128i k__cospi_p08_p24 = pair_set_epi16(cospi_8_64, cospi_24_64);
1491 const __m128i k__cospi_p24_m08 = pair_set_epi16(cospi_24_64, -cospi_8_64);
1492 const __m128i k__cospi_m24_p08 = pair_set_epi16(-cospi_24_64, cospi_8_64);
1493 const __m128i k__cospi_m16_m16 = _mm_set1_epi16(-cospi_16_64);
1494 const __m128i k__cospi_p16_p16 = _mm_set1_epi16(cospi_16_64);
1495 const __m128i k__cospi_p16_m16 = pair_set_epi16(cospi_16_64, -cospi_16_64);
1496 const __m128i k__cospi_m16_p16 = pair_set_epi16(-cospi_16_64, cospi_16_64);
1497 const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32(DCT_CONST_ROUNDING);
1498 const __m128i kZero = _mm_set1_epi16(0);
1499
1500 u[0] = _mm_unpacklo_epi16(in[15], in[0]);
1501 u[1] = _mm_unpackhi_epi16(in[15], in[0]);
1502 u[2] = _mm_unpacklo_epi16(in[13], in[2]);
1503 u[3] = _mm_unpackhi_epi16(in[13], in[2]);
1504 u[4] = _mm_unpacklo_epi16(in[11], in[4]);
1505 u[5] = _mm_unpackhi_epi16(in[11], in[4]);
1506 u[6] = _mm_unpacklo_epi16(in[9], in[6]);
1507 u[7] = _mm_unpackhi_epi16(in[9], in[6]);
1508 u[8] = _mm_unpacklo_epi16(in[7], in[8]);
1509 u[9] = _mm_unpackhi_epi16(in[7], in[8]);
1510 u[10] = _mm_unpacklo_epi16(in[5], in[10]);
1511 u[11] = _mm_unpackhi_epi16(in[5], in[10]);
1512 u[12] = _mm_unpacklo_epi16(in[3], in[12]);
1513 u[13] = _mm_unpackhi_epi16(in[3], in[12]);
1514 u[14] = _mm_unpacklo_epi16(in[1], in[14]);
1515 u[15] = _mm_unpackhi_epi16(in[1], in[14]);
1516
1517 v[0] = _mm_madd_epi16(u[0], k__cospi_p01_p31);
1518 v[1] = _mm_madd_epi16(u[1], k__cospi_p01_p31);
1519 v[2] = _mm_madd_epi16(u[0], k__cospi_p31_m01);
1520 v[3] = _mm_madd_epi16(u[1], k__cospi_p31_m01);
1521 v[4] = _mm_madd_epi16(u[2], k__cospi_p05_p27);
1522 v[5] = _mm_madd_epi16(u[3], k__cospi_p05_p27);
1523 v[6] = _mm_madd_epi16(u[2], k__cospi_p27_m05);
1524 v[7] = _mm_madd_epi16(u[3], k__cospi_p27_m05);
1525 v[8] = _mm_madd_epi16(u[4], k__cospi_p09_p23);
1526 v[9] = _mm_madd_epi16(u[5], k__cospi_p09_p23);
1527 v[10] = _mm_madd_epi16(u[4], k__cospi_p23_m09);
1528 v[11] = _mm_madd_epi16(u[5], k__cospi_p23_m09);
1529 v[12] = _mm_madd_epi16(u[6], k__cospi_p13_p19);
1530 v[13] = _mm_madd_epi16(u[7], k__cospi_p13_p19);
1531 v[14] = _mm_madd_epi16(u[6], k__cospi_p19_m13);
1532 v[15] = _mm_madd_epi16(u[7], k__cospi_p19_m13);
1533 v[16] = _mm_madd_epi16(u[8], k__cospi_p17_p15);
1534 v[17] = _mm_madd_epi16(u[9], k__cospi_p17_p15);
1535 v[18] = _mm_madd_epi16(u[8], k__cospi_p15_m17);
1536 v[19] = _mm_madd_epi16(u[9], k__cospi_p15_m17);
1537 v[20] = _mm_madd_epi16(u[10], k__cospi_p21_p11);
1538 v[21] = _mm_madd_epi16(u[11], k__cospi_p21_p11);
1539 v[22] = _mm_madd_epi16(u[10], k__cospi_p11_m21);
1540 v[23] = _mm_madd_epi16(u[11], k__cospi_p11_m21);
1541 v[24] = _mm_madd_epi16(u[12], k__cospi_p25_p07);
1542 v[25] = _mm_madd_epi16(u[13], k__cospi_p25_p07);
1543 v[26] = _mm_madd_epi16(u[12], k__cospi_p07_m25);
1544 v[27] = _mm_madd_epi16(u[13], k__cospi_p07_m25);
1545 v[28] = _mm_madd_epi16(u[14], k__cospi_p29_p03);
1546 v[29] = _mm_madd_epi16(u[15], k__cospi_p29_p03);
1547 v[30] = _mm_madd_epi16(u[14], k__cospi_p03_m29);
1548 v[31] = _mm_madd_epi16(u[15], k__cospi_p03_m29);
1549
1550 u[0] = _mm_add_epi32(v[0], v[16]);
1551 u[1] = _mm_add_epi32(v[1], v[17]);
1552 u[2] = _mm_add_epi32(v[2], v[18]);
1553 u[3] = _mm_add_epi32(v[3], v[19]);
1554 u[4] = _mm_add_epi32(v[4], v[20]);
1555 u[5] = _mm_add_epi32(v[5], v[21]);
1556 u[6] = _mm_add_epi32(v[6], v[22]);
1557 u[7] = _mm_add_epi32(v[7], v[23]);
1558 u[8] = _mm_add_epi32(v[8], v[24]);
1559 u[9] = _mm_add_epi32(v[9], v[25]);
1560 u[10] = _mm_add_epi32(v[10], v[26]);
1561 u[11] = _mm_add_epi32(v[11], v[27]);
1562 u[12] = _mm_add_epi32(v[12], v[28]);
1563 u[13] = _mm_add_epi32(v[13], v[29]);
1564 u[14] = _mm_add_epi32(v[14], v[30]);
1565 u[15] = _mm_add_epi32(v[15], v[31]);
1566 u[16] = _mm_sub_epi32(v[0], v[16]);
1567 u[17] = _mm_sub_epi32(v[1], v[17]);
1568 u[18] = _mm_sub_epi32(v[2], v[18]);
1569 u[19] = _mm_sub_epi32(v[3], v[19]);
1570 u[20] = _mm_sub_epi32(v[4], v[20]);
1571 u[21] = _mm_sub_epi32(v[5], v[21]);
1572 u[22] = _mm_sub_epi32(v[6], v[22]);
1573 u[23] = _mm_sub_epi32(v[7], v[23]);
1574 u[24] = _mm_sub_epi32(v[8], v[24]);
1575 u[25] = _mm_sub_epi32(v[9], v[25]);
1576 u[26] = _mm_sub_epi32(v[10], v[26]);
1577 u[27] = _mm_sub_epi32(v[11], v[27]);
1578 u[28] = _mm_sub_epi32(v[12], v[28]);
1579 u[29] = _mm_sub_epi32(v[13], v[29]);
1580 u[30] = _mm_sub_epi32(v[14], v[30]);
1581 u[31] = _mm_sub_epi32(v[15], v[31]);
1582
1583 v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
1584 v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
1585 v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
1586 v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
1587 v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
1588 v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
1589 v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
1590 v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
1591 v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
1592 v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
1593 v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
1594 v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
1595 v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
1596 v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
1597 v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
1598 v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
1599 v[16] = _mm_add_epi32(u[16], k__DCT_CONST_ROUNDING);
1600 v[17] = _mm_add_epi32(u[17], k__DCT_CONST_ROUNDING);
1601 v[18] = _mm_add_epi32(u[18], k__DCT_CONST_ROUNDING);
1602 v[19] = _mm_add_epi32(u[19], k__DCT_CONST_ROUNDING);
1603 v[20] = _mm_add_epi32(u[20], k__DCT_CONST_ROUNDING);
1604 v[21] = _mm_add_epi32(u[21], k__DCT_CONST_ROUNDING);
1605 v[22] = _mm_add_epi32(u[22], k__DCT_CONST_ROUNDING);
1606 v[23] = _mm_add_epi32(u[23], k__DCT_CONST_ROUNDING);
1607 v[24] = _mm_add_epi32(u[24], k__DCT_CONST_ROUNDING);
1608 v[25] = _mm_add_epi32(u[25], k__DCT_CONST_ROUNDING);
1609 v[26] = _mm_add_epi32(u[26], k__DCT_CONST_ROUNDING);
1610 v[27] = _mm_add_epi32(u[27], k__DCT_CONST_ROUNDING);
1611 v[28] = _mm_add_epi32(u[28], k__DCT_CONST_ROUNDING);
1612 v[29] = _mm_add_epi32(u[29], k__DCT_CONST_ROUNDING);
1613 v[30] = _mm_add_epi32(u[30], k__DCT_CONST_ROUNDING);
1614 v[31] = _mm_add_epi32(u[31], k__DCT_CONST_ROUNDING);
1615
1616 u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
1617 u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
1618 u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
1619 u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
1620 u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS);
1621 u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS);
1622 u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS);
1623 u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS);
1624 u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS);
1625 u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS);
1626 u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS);
1627 u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS);
1628 u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS);
1629 u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS);
1630 u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS);
1631 u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS);
1632 u[16] = _mm_srai_epi32(v[16], DCT_CONST_BITS);
1633 u[17] = _mm_srai_epi32(v[17], DCT_CONST_BITS);
1634 u[18] = _mm_srai_epi32(v[18], DCT_CONST_BITS);
1635 u[19] = _mm_srai_epi32(v[19], DCT_CONST_BITS);
1636 u[20] = _mm_srai_epi32(v[20], DCT_CONST_BITS);
1637 u[21] = _mm_srai_epi32(v[21], DCT_CONST_BITS);
1638 u[22] = _mm_srai_epi32(v[22], DCT_CONST_BITS);
1639 u[23] = _mm_srai_epi32(v[23], DCT_CONST_BITS);
1640 u[24] = _mm_srai_epi32(v[24], DCT_CONST_BITS);
1641 u[25] = _mm_srai_epi32(v[25], DCT_CONST_BITS);
1642 u[26] = _mm_srai_epi32(v[26], DCT_CONST_BITS);
1643 u[27] = _mm_srai_epi32(v[27], DCT_CONST_BITS);
1644 u[28] = _mm_srai_epi32(v[28], DCT_CONST_BITS);
1645 u[29] = _mm_srai_epi32(v[29], DCT_CONST_BITS);
1646 u[30] = _mm_srai_epi32(v[30], DCT_CONST_BITS);
1647 u[31] = _mm_srai_epi32(v[31], DCT_CONST_BITS);
1648
1649 s[0] = _mm_packs_epi32(u[0], u[1]);
1650 s[1] = _mm_packs_epi32(u[2], u[3]);
1651 s[2] = _mm_packs_epi32(u[4], u[5]);
1652 s[3] = _mm_packs_epi32(u[6], u[7]);
1653 s[4] = _mm_packs_epi32(u[8], u[9]);
1654 s[5] = _mm_packs_epi32(u[10], u[11]);
1655 s[6] = _mm_packs_epi32(u[12], u[13]);
1656 s[7] = _mm_packs_epi32(u[14], u[15]);
1657 s[8] = _mm_packs_epi32(u[16], u[17]);
1658 s[9] = _mm_packs_epi32(u[18], u[19]);
1659 s[10] = _mm_packs_epi32(u[20], u[21]);
1660 s[11] = _mm_packs_epi32(u[22], u[23]);
1661 s[12] = _mm_packs_epi32(u[24], u[25]);
1662 s[13] = _mm_packs_epi32(u[26], u[27]);
1663 s[14] = _mm_packs_epi32(u[28], u[29]);
1664 s[15] = _mm_packs_epi32(u[30], u[31]);
1665
1666 // stage 2
1667 u[0] = _mm_unpacklo_epi16(s[8], s[9]);
1668 u[1] = _mm_unpackhi_epi16(s[8], s[9]);
1669 u[2] = _mm_unpacklo_epi16(s[10], s[11]);
1670 u[3] = _mm_unpackhi_epi16(s[10], s[11]);
1671 u[4] = _mm_unpacklo_epi16(s[12], s[13]);
1672 u[5] = _mm_unpackhi_epi16(s[12], s[13]);
1673 u[6] = _mm_unpacklo_epi16(s[14], s[15]);
1674 u[7] = _mm_unpackhi_epi16(s[14], s[15]);
1675
1676 v[0] = _mm_madd_epi16(u[0], k__cospi_p04_p28);
1677 v[1] = _mm_madd_epi16(u[1], k__cospi_p04_p28);
1678 v[2] = _mm_madd_epi16(u[0], k__cospi_p28_m04);
1679 v[3] = _mm_madd_epi16(u[1], k__cospi_p28_m04);
1680 v[4] = _mm_madd_epi16(u[2], k__cospi_p20_p12);
1681 v[5] = _mm_madd_epi16(u[3], k__cospi_p20_p12);
1682 v[6] = _mm_madd_epi16(u[2], k__cospi_p12_m20);
1683 v[7] = _mm_madd_epi16(u[3], k__cospi_p12_m20);
1684 v[8] = _mm_madd_epi16(u[4], k__cospi_m28_p04);
1685 v[9] = _mm_madd_epi16(u[5], k__cospi_m28_p04);
1686 v[10] = _mm_madd_epi16(u[4], k__cospi_p04_p28);
1687 v[11] = _mm_madd_epi16(u[5], k__cospi_p04_p28);
1688 v[12] = _mm_madd_epi16(u[6], k__cospi_m12_p20);
1689 v[13] = _mm_madd_epi16(u[7], k__cospi_m12_p20);
1690 v[14] = _mm_madd_epi16(u[6], k__cospi_p20_p12);
1691 v[15] = _mm_madd_epi16(u[7], k__cospi_p20_p12);
1692
1693 u[0] = _mm_add_epi32(v[0], v[8]);
1694 u[1] = _mm_add_epi32(v[1], v[9]);
1695 u[2] = _mm_add_epi32(v[2], v[10]);
1696 u[3] = _mm_add_epi32(v[3], v[11]);
1697 u[4] = _mm_add_epi32(v[4], v[12]);
1698 u[5] = _mm_add_epi32(v[5], v[13]);
1699 u[6] = _mm_add_epi32(v[6], v[14]);
1700 u[7] = _mm_add_epi32(v[7], v[15]);
1701 u[8] = _mm_sub_epi32(v[0], v[8]);
1702 u[9] = _mm_sub_epi32(v[1], v[9]);
1703 u[10] = _mm_sub_epi32(v[2], v[10]);
1704 u[11] = _mm_sub_epi32(v[3], v[11]);
1705 u[12] = _mm_sub_epi32(v[4], v[12]);
1706 u[13] = _mm_sub_epi32(v[5], v[13]);
1707 u[14] = _mm_sub_epi32(v[6], v[14]);
1708 u[15] = _mm_sub_epi32(v[7], v[15]);
1709
1710 v[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
1711 v[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
1712 v[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
1713 v[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
1714 v[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
1715 v[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
1716 v[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
1717 v[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
1718 v[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
1719 v[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
1720 v[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
1721 v[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
1722 v[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
1723 v[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
1724 v[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
1725 v[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
1726
1727 u[0] = _mm_srai_epi32(v[0], DCT_CONST_BITS);
1728 u[1] = _mm_srai_epi32(v[1], DCT_CONST_BITS);
1729 u[2] = _mm_srai_epi32(v[2], DCT_CONST_BITS);
1730 u[3] = _mm_srai_epi32(v[3], DCT_CONST_BITS);
1731 u[4] = _mm_srai_epi32(v[4], DCT_CONST_BITS);
1732 u[5] = _mm_srai_epi32(v[5], DCT_CONST_BITS);
1733 u[6] = _mm_srai_epi32(v[6], DCT_CONST_BITS);
1734 u[7] = _mm_srai_epi32(v[7], DCT_CONST_BITS);
1735 u[8] = _mm_srai_epi32(v[8], DCT_CONST_BITS);
1736 u[9] = _mm_srai_epi32(v[9], DCT_CONST_BITS);
1737 u[10] = _mm_srai_epi32(v[10], DCT_CONST_BITS);
1738 u[11] = _mm_srai_epi32(v[11], DCT_CONST_BITS);
1739 u[12] = _mm_srai_epi32(v[12], DCT_CONST_BITS);
1740 u[13] = _mm_srai_epi32(v[13], DCT_CONST_BITS);
1741 u[14] = _mm_srai_epi32(v[14], DCT_CONST_BITS);
1742 u[15] = _mm_srai_epi32(v[15], DCT_CONST_BITS);
1743
1744 x[0] = _mm_add_epi16(s[0], s[4]);
1745 x[1] = _mm_add_epi16(s[1], s[5]);
1746 x[2] = _mm_add_epi16(s[2], s[6]);
1747 x[3] = _mm_add_epi16(s[3], s[7]);
1748 x[4] = _mm_sub_epi16(s[0], s[4]);
1749 x[5] = _mm_sub_epi16(s[1], s[5]);
1750 x[6] = _mm_sub_epi16(s[2], s[6]);
1751 x[7] = _mm_sub_epi16(s[3], s[7]);
1752 x[8] = _mm_packs_epi32(u[0], u[1]);
1753 x[9] = _mm_packs_epi32(u[2], u[3]);
1754 x[10] = _mm_packs_epi32(u[4], u[5]);
1755 x[11] = _mm_packs_epi32(u[6], u[7]);
1756 x[12] = _mm_packs_epi32(u[8], u[9]);
1757 x[13] = _mm_packs_epi32(u[10], u[11]);
1758 x[14] = _mm_packs_epi32(u[12], u[13]);
1759 x[15] = _mm_packs_epi32(u[14], u[15]);
1760
1761 // stage 3
1762 u[0] = _mm_unpacklo_epi16(x[4], x[5]);
1763 u[1] = _mm_unpackhi_epi16(x[4], x[5]);
1764 u[2] = _mm_unpacklo_epi16(x[6], x[7]);
1765 u[3] = _mm_unpackhi_epi16(x[6], x[7]);
1766 u[4] = _mm_unpacklo_epi16(x[12], x[13]);
1767 u[5] = _mm_unpackhi_epi16(x[12], x[13]);
1768 u[6] = _mm_unpacklo_epi16(x[14], x[15]);
1769 u[7] = _mm_unpackhi_epi16(x[14], x[15]);
1770
1771 v[0] = _mm_madd_epi16(u[0], k__cospi_p08_p24);
1772 v[1] = _mm_madd_epi16(u[1], k__cospi_p08_p24);
1773 v[2] = _mm_madd_epi16(u[0], k__cospi_p24_m08);
1774 v[3] = _mm_madd_epi16(u[1], k__cospi_p24_m08);
1775 v[4] = _mm_madd_epi16(u[2], k__cospi_m24_p08);
1776 v[5] = _mm_madd_epi16(u[3], k__cospi_m24_p08);
1777 v[6] = _mm_madd_epi16(u[2], k__cospi_p08_p24);
1778 v[7] = _mm_madd_epi16(u[3], k__cospi_p08_p24);
1779 v[8] = _mm_madd_epi16(u[4], k__cospi_p08_p24);
1780 v[9] = _mm_madd_epi16(u[5], k__cospi_p08_p24);
1781 v[10] = _mm_madd_epi16(u[4], k__cospi_p24_m08);
1782 v[11] = _mm_madd_epi16(u[5], k__cospi_p24_m08);
1783 v[12] = _mm_madd_epi16(u[6], k__cospi_m24_p08);
1784 v[13] = _mm_madd_epi16(u[7], k__cospi_m24_p08);
1785 v[14] = _mm_madd_epi16(u[6], k__cospi_p08_p24);
1786 v[15] = _mm_madd_epi16(u[7], k__cospi_p08_p24);
1787
1788 u[0] = _mm_add_epi32(v[0], v[4]);
1789 u[1] = _mm_add_epi32(v[1], v[5]);
1790 u[2] = _mm_add_epi32(v[2], v[6]);
1791 u[3] = _mm_add_epi32(v[3], v[7]);
1792 u[4] = _mm_sub_epi32(v[0], v[4]);
1793 u[5] = _mm_sub_epi32(v[1], v[5]);
1794 u[6] = _mm_sub_epi32(v[2], v[6]);
1795 u[7] = _mm_sub_epi32(v[3], v[7]);
1796 u[8] = _mm_add_epi32(v[8], v[12]);
1797 u[9] = _mm_add_epi32(v[9], v[13]);
1798 u[10] = _mm_add_epi32(v[10], v[14]);
1799 u[11] = _mm_add_epi32(v[11], v[15]);
1800 u[12] = _mm_sub_epi32(v[8], v[12]);
1801 u[13] = _mm_sub_epi32(v[9], v[13]);
1802 u[14] = _mm_sub_epi32(v[10], v[14]);
1803 u[15] = _mm_sub_epi32(v[11], v[15]);
1804
1805 u[0] = _mm_add_epi32(u[0], k__DCT_CONST_ROUNDING);
1806 u[1] = _mm_add_epi32(u[1], k__DCT_CONST_ROUNDING);
1807 u[2] = _mm_add_epi32(u[2], k__DCT_CONST_ROUNDING);
1808 u[3] = _mm_add_epi32(u[3], k__DCT_CONST_ROUNDING);
1809 u[4] = _mm_add_epi32(u[4], k__DCT_CONST_ROUNDING);
1810 u[5] = _mm_add_epi32(u[5], k__DCT_CONST_ROUNDING);
1811 u[6] = _mm_add_epi32(u[6], k__DCT_CONST_ROUNDING);
1812 u[7] = _mm_add_epi32(u[7], k__DCT_CONST_ROUNDING);
1813 u[8] = _mm_add_epi32(u[8], k__DCT_CONST_ROUNDING);
1814 u[9] = _mm_add_epi32(u[9], k__DCT_CONST_ROUNDING);
1815 u[10] = _mm_add_epi32(u[10], k__DCT_CONST_ROUNDING);
1816 u[11] = _mm_add_epi32(u[11], k__DCT_CONST_ROUNDING);
1817 u[12] = _mm_add_epi32(u[12], k__DCT_CONST_ROUNDING);
1818 u[13] = _mm_add_epi32(u[13], k__DCT_CONST_ROUNDING);
1819 u[14] = _mm_add_epi32(u[14], k__DCT_CONST_ROUNDING);
1820 u[15] = _mm_add_epi32(u[15], k__DCT_CONST_ROUNDING);
1821
1822 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1823 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1824 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1825 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1826 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1827 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1828 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1829 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1830 v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
1831 v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
1832 v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
1833 v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
1834 v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
1835 v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
1836 v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
1837 v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
1838
1839 s[0] = _mm_add_epi16(x[0], x[2]);
1840 s[1] = _mm_add_epi16(x[1], x[3]);
1841 s[2] = _mm_sub_epi16(x[0], x[2]);
1842 s[3] = _mm_sub_epi16(x[1], x[3]);
1843 s[4] = _mm_packs_epi32(v[0], v[1]);
1844 s[5] = _mm_packs_epi32(v[2], v[3]);
1845 s[6] = _mm_packs_epi32(v[4], v[5]);
1846 s[7] = _mm_packs_epi32(v[6], v[7]);
1847 s[8] = _mm_add_epi16(x[8], x[10]);
1848 s[9] = _mm_add_epi16(x[9], x[11]);
1849 s[10] = _mm_sub_epi16(x[8], x[10]);
1850 s[11] = _mm_sub_epi16(x[9], x[11]);
1851 s[12] = _mm_packs_epi32(v[8], v[9]);
1852 s[13] = _mm_packs_epi32(v[10], v[11]);
1853 s[14] = _mm_packs_epi32(v[12], v[13]);
1854 s[15] = _mm_packs_epi32(v[14], v[15]);
1855
1856 // stage 4
1857 u[0] = _mm_unpacklo_epi16(s[2], s[3]);
1858 u[1] = _mm_unpackhi_epi16(s[2], s[3]);
1859 u[2] = _mm_unpacklo_epi16(s[6], s[7]);
1860 u[3] = _mm_unpackhi_epi16(s[6], s[7]);
1861 u[4] = _mm_unpacklo_epi16(s[10], s[11]);
1862 u[5] = _mm_unpackhi_epi16(s[10], s[11]);
1863 u[6] = _mm_unpacklo_epi16(s[14], s[15]);
1864 u[7] = _mm_unpackhi_epi16(s[14], s[15]);
1865
1866 v[0] = _mm_madd_epi16(u[0], k__cospi_m16_m16);
1867 v[1] = _mm_madd_epi16(u[1], k__cospi_m16_m16);
1868 v[2] = _mm_madd_epi16(u[0], k__cospi_p16_m16);
1869 v[3] = _mm_madd_epi16(u[1], k__cospi_p16_m16);
1870 v[4] = _mm_madd_epi16(u[2], k__cospi_p16_p16);
1871 v[5] = _mm_madd_epi16(u[3], k__cospi_p16_p16);
1872 v[6] = _mm_madd_epi16(u[2], k__cospi_m16_p16);
1873 v[7] = _mm_madd_epi16(u[3], k__cospi_m16_p16);
1874 v[8] = _mm_madd_epi16(u[4], k__cospi_p16_p16);
1875 v[9] = _mm_madd_epi16(u[5], k__cospi_p16_p16);
1876 v[10] = _mm_madd_epi16(u[4], k__cospi_m16_p16);
1877 v[11] = _mm_madd_epi16(u[5], k__cospi_m16_p16);
1878 v[12] = _mm_madd_epi16(u[6], k__cospi_m16_m16);
1879 v[13] = _mm_madd_epi16(u[7], k__cospi_m16_m16);
1880 v[14] = _mm_madd_epi16(u[6], k__cospi_p16_m16);
1881 v[15] = _mm_madd_epi16(u[7], k__cospi_p16_m16);
1882
1883 u[0] = _mm_add_epi32(v[0], k__DCT_CONST_ROUNDING);
1884 u[1] = _mm_add_epi32(v[1], k__DCT_CONST_ROUNDING);
1885 u[2] = _mm_add_epi32(v[2], k__DCT_CONST_ROUNDING);
1886 u[3] = _mm_add_epi32(v[3], k__DCT_CONST_ROUNDING);
1887 u[4] = _mm_add_epi32(v[4], k__DCT_CONST_ROUNDING);
1888 u[5] = _mm_add_epi32(v[5], k__DCT_CONST_ROUNDING);
1889 u[6] = _mm_add_epi32(v[6], k__DCT_CONST_ROUNDING);
1890 u[7] = _mm_add_epi32(v[7], k__DCT_CONST_ROUNDING);
1891 u[8] = _mm_add_epi32(v[8], k__DCT_CONST_ROUNDING);
1892 u[9] = _mm_add_epi32(v[9], k__DCT_CONST_ROUNDING);
1893 u[10] = _mm_add_epi32(v[10], k__DCT_CONST_ROUNDING);
1894 u[11] = _mm_add_epi32(v[11], k__DCT_CONST_ROUNDING);
1895 u[12] = _mm_add_epi32(v[12], k__DCT_CONST_ROUNDING);
1896 u[13] = _mm_add_epi32(v[13], k__DCT_CONST_ROUNDING);
1897 u[14] = _mm_add_epi32(v[14], k__DCT_CONST_ROUNDING);
1898 u[15] = _mm_add_epi32(v[15], k__DCT_CONST_ROUNDING);
1899
1900 v[0] = _mm_srai_epi32(u[0], DCT_CONST_BITS);
1901 v[1] = _mm_srai_epi32(u[1], DCT_CONST_BITS);
1902 v[2] = _mm_srai_epi32(u[2], DCT_CONST_BITS);
1903 v[3] = _mm_srai_epi32(u[3], DCT_CONST_BITS);
1904 v[4] = _mm_srai_epi32(u[4], DCT_CONST_BITS);
1905 v[5] = _mm_srai_epi32(u[5], DCT_CONST_BITS);
1906 v[6] = _mm_srai_epi32(u[6], DCT_CONST_BITS);
1907 v[7] = _mm_srai_epi32(u[7], DCT_CONST_BITS);
1908 v[8] = _mm_srai_epi32(u[8], DCT_CONST_BITS);
1909 v[9] = _mm_srai_epi32(u[9], DCT_CONST_BITS);
1910 v[10] = _mm_srai_epi32(u[10], DCT_CONST_BITS);
1911 v[11] = _mm_srai_epi32(u[11], DCT_CONST_BITS);
1912 v[12] = _mm_srai_epi32(u[12], DCT_CONST_BITS);
1913 v[13] = _mm_srai_epi32(u[13], DCT_CONST_BITS);
1914 v[14] = _mm_srai_epi32(u[14], DCT_CONST_BITS);
1915 v[15] = _mm_srai_epi32(u[15], DCT_CONST_BITS);
1916
1917 in[0] = s[0];
1918 in[1] = _mm_sub_epi16(kZero, s[8]);
1919 in[2] = s[12];
1920 in[3] = _mm_sub_epi16(kZero, s[4]);
1921 in[4] = _mm_packs_epi32(v[4], v[5]);
1922 in[5] = _mm_packs_epi32(v[12], v[13]);
1923 in[6] = _mm_packs_epi32(v[8], v[9]);
1924 in[7] = _mm_packs_epi32(v[0], v[1]);
1925 in[8] = _mm_packs_epi32(v[2], v[3]);
1926 in[9] = _mm_packs_epi32(v[10], v[11]);
1927 in[10] = _mm_packs_epi32(v[14], v[15]);
1928 in[11] = _mm_packs_epi32(v[6], v[7]);
1929 in[12] = s[5];
1930 in[13] = _mm_sub_epi16(kZero, s[13]);
1931 in[14] = s[9];
1932 in[15] = _mm_sub_epi16(kZero, s[1]);
1933 }
1934
fdct16_sse2(__m128i * in0,__m128i * in1)1935 static void fdct16_sse2(__m128i *in0, __m128i *in1) {
1936 fdct16_8col(in0);
1937 fdct16_8col(in1);
1938 transpose_16bit_16x16(in0, in1);
1939 }
1940
fadst16_sse2(__m128i * in0,__m128i * in1)1941 static void fadst16_sse2(__m128i *in0, __m128i *in1) {
1942 fadst16_8col(in0);
1943 fadst16_8col(in1);
1944 transpose_16bit_16x16(in0, in1);
1945 }
1946
vp9_fht16x16_sse2(const int16_t * input,tran_low_t * output,int stride,int tx_type)1947 void vp9_fht16x16_sse2(const int16_t *input, tran_low_t *output, int stride,
1948 int tx_type) {
1949 __m128i in0[16], in1[16];
1950
1951 switch (tx_type) {
1952 case DCT_DCT: vpx_fdct16x16_sse2(input, output, stride); break;
1953 case ADST_DCT:
1954 load_buffer_16x16(input, in0, in1, stride);
1955 fadst16_sse2(in0, in1);
1956 right_shift_16x16(in0, in1);
1957 fdct16_sse2(in0, in1);
1958 write_buffer_16x16(output, in0, in1, 16);
1959 break;
1960 case DCT_ADST:
1961 load_buffer_16x16(input, in0, in1, stride);
1962 fdct16_sse2(in0, in1);
1963 right_shift_16x16(in0, in1);
1964 fadst16_sse2(in0, in1);
1965 write_buffer_16x16(output, in0, in1, 16);
1966 break;
1967 default:
1968 assert(tx_type == ADST_ADST);
1969 load_buffer_16x16(input, in0, in1, stride);
1970 fadst16_sse2(in0, in1);
1971 right_shift_16x16(in0, in1);
1972 fadst16_sse2(in0, in1);
1973 write_buffer_16x16(output, in0, in1, 16);
1974 break;
1975 }
1976 }
1977