1 /* 2 * Copyright (c) 2016 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 <arm_neon.h> 12 13 #include "./vpx_config.h" 14 #include "./vpx_dsp_rtcd.h" 15 #include "vpx_dsp/arm/idct_neon.h" 16 #include "vpx_dsp/arm/mem_neon.h" 17 #include "vpx_dsp/arm/transpose_neon.h" 18 #include "vpx_dsp/txfm_common.h" 19 20 // Only for the first pass of the _34_ variant. Since it only uses values from 21 // the top left 8x8 it can safely assume all the remaining values are 0 and skip 22 // an awful lot of calculations. In fact, only the first 6 columns make the cut. 23 // None of the elements in the 7th or 8th column are used so it skips any calls 24 // to input[67] too. 25 // In C this does a single row of 32 for each call. Here it transposes the top 26 // left 8x8 to allow using SIMD. 27 28 // vp9/common/vp9_scan.c:vp9_default_iscan_32x32 arranges the first 34 non-zero 29 // coefficients as follows: 30 // 0 1 2 3 4 5 6 7 31 // 0 0 2 5 10 17 25 32 // 1 1 4 8 15 22 30 33 // 2 3 7 12 18 28 34 // 3 6 11 16 23 31 35 // 4 9 14 19 29 36 // 5 13 20 26 37 // 6 21 27 33 38 // 7 24 32 39 void vpx_idct32_6_neon(const tran_low_t *input, int16_t *output) { 40 int16x8_t in[8], s1[32], s2[32], s3[32]; 41 42 in[0] = load_tran_low_to_s16q(input); 43 input += 32; 44 in[1] = load_tran_low_to_s16q(input); 45 input += 32; 46 in[2] = load_tran_low_to_s16q(input); 47 input += 32; 48 in[3] = load_tran_low_to_s16q(input); 49 input += 32; 50 in[4] = load_tran_low_to_s16q(input); 51 input += 32; 52 in[5] = load_tran_low_to_s16q(input); 53 input += 32; 54 in[6] = load_tran_low_to_s16q(input); 55 input += 32; 56 in[7] = load_tran_low_to_s16q(input); 57 transpose_s16_8x8(&in[0], &in[1], &in[2], &in[3], &in[4], &in[5], &in[6], 58 &in[7]); 59 60 // stage 1 61 // input[1] * cospi_31_64 - input[31] * cospi_1_64 (but input[31] == 0) 62 s1[16] = multiply_shift_and_narrow_s16(in[1], cospi_31_64); 63 // input[1] * cospi_1_64 + input[31] * cospi_31_64 (but input[31] == 0) 64 s1[31] = multiply_shift_and_narrow_s16(in[1], cospi_1_64); 65 66 s1[20] = multiply_shift_and_narrow_s16(in[5], cospi_27_64); 67 s1[27] = multiply_shift_and_narrow_s16(in[5], cospi_5_64); 68 69 s1[23] = multiply_shift_and_narrow_s16(in[3], -cospi_29_64); 70 s1[24] = multiply_shift_and_narrow_s16(in[3], cospi_3_64); 71 72 // stage 2 73 s2[8] = multiply_shift_and_narrow_s16(in[2], cospi_30_64); 74 s2[15] = multiply_shift_and_narrow_s16(in[2], cospi_2_64); 75 76 // stage 3 77 s1[4] = multiply_shift_and_narrow_s16(in[4], cospi_28_64); 78 s1[7] = multiply_shift_and_narrow_s16(in[4], cospi_4_64); 79 80 s1[17] = multiply_accumulate_shift_and_narrow_s16(s1[16], -cospi_4_64, s1[31], 81 cospi_28_64); 82 s1[30] = multiply_accumulate_shift_and_narrow_s16(s1[16], cospi_28_64, s1[31], 83 cospi_4_64); 84 85 s1[21] = multiply_accumulate_shift_and_narrow_s16(s1[20], -cospi_20_64, 86 s1[27], cospi_12_64); 87 s1[26] = multiply_accumulate_shift_and_narrow_s16(s1[20], cospi_12_64, s1[27], 88 cospi_20_64); 89 90 s1[22] = multiply_accumulate_shift_and_narrow_s16(s1[23], -cospi_12_64, 91 s1[24], -cospi_20_64); 92 s1[25] = multiply_accumulate_shift_and_narrow_s16(s1[23], -cospi_20_64, 93 s1[24], cospi_12_64); 94 95 // stage 4 96 s1[0] = multiply_shift_and_narrow_s16(in[0], cospi_16_64); 97 98 s2[9] = multiply_accumulate_shift_and_narrow_s16(s2[8], -cospi_8_64, s2[15], 99 cospi_24_64); 100 s2[14] = multiply_accumulate_shift_and_narrow_s16(s2[8], cospi_24_64, s2[15], 101 cospi_8_64); 102 103 s2[20] = vsubq_s16(s1[23], s1[20]); 104 s2[21] = vsubq_s16(s1[22], s1[21]); 105 s2[22] = vaddq_s16(s1[21], s1[22]); 106 s2[23] = vaddq_s16(s1[20], s1[23]); 107 s2[24] = vaddq_s16(s1[24], s1[27]); 108 s2[25] = vaddq_s16(s1[25], s1[26]); 109 s2[26] = vsubq_s16(s1[25], s1[26]); 110 s2[27] = vsubq_s16(s1[24], s1[27]); 111 112 // stage 5 113 s1[5] = sub_multiply_shift_and_narrow_s16(s1[7], s1[4], cospi_16_64); 114 s1[6] = add_multiply_shift_and_narrow_s16(s1[4], s1[7], cospi_16_64); 115 116 s1[18] = multiply_accumulate_shift_and_narrow_s16(s1[17], -cospi_8_64, s1[30], 117 cospi_24_64); 118 s1[29] = multiply_accumulate_shift_and_narrow_s16(s1[17], cospi_24_64, s1[30], 119 cospi_8_64); 120 121 s1[19] = multiply_accumulate_shift_and_narrow_s16(s1[16], -cospi_8_64, s1[31], 122 cospi_24_64); 123 s1[28] = multiply_accumulate_shift_and_narrow_s16(s1[16], cospi_24_64, s1[31], 124 cospi_8_64); 125 126 s1[20] = multiply_accumulate_shift_and_narrow_s16(s2[20], -cospi_24_64, 127 s2[27], -cospi_8_64); 128 s1[27] = multiply_accumulate_shift_and_narrow_s16(s2[20], -cospi_8_64, s2[27], 129 cospi_24_64); 130 131 s1[21] = multiply_accumulate_shift_and_narrow_s16(s2[21], -cospi_24_64, 132 s2[26], -cospi_8_64); 133 s1[26] = multiply_accumulate_shift_and_narrow_s16(s2[21], -cospi_8_64, s2[26], 134 cospi_24_64); 135 136 // stage 6 137 s2[0] = vaddq_s16(s1[0], s1[7]); 138 s2[1] = vaddq_s16(s1[0], s1[6]); 139 s2[2] = vaddq_s16(s1[0], s1[5]); 140 s2[3] = vaddq_s16(s1[0], s1[4]); 141 s2[4] = vsubq_s16(s1[0], s1[4]); 142 s2[5] = vsubq_s16(s1[0], s1[5]); 143 s2[6] = vsubq_s16(s1[0], s1[6]); 144 s2[7] = vsubq_s16(s1[0], s1[7]); 145 146 s2[10] = sub_multiply_shift_and_narrow_s16(s2[14], s2[9], cospi_16_64); 147 s2[13] = add_multiply_shift_and_narrow_s16(s2[9], s2[14], cospi_16_64); 148 149 s2[11] = sub_multiply_shift_and_narrow_s16(s2[15], s2[8], cospi_16_64); 150 s2[12] = add_multiply_shift_and_narrow_s16(s2[8], s2[15], cospi_16_64); 151 152 s2[16] = vaddq_s16(s1[16], s2[23]); 153 s2[17] = vaddq_s16(s1[17], s2[22]); 154 s2[18] = vaddq_s16(s1[18], s1[21]); 155 s2[19] = vaddq_s16(s1[19], s1[20]); 156 s2[20] = vsubq_s16(s1[19], s1[20]); 157 s2[21] = vsubq_s16(s1[18], s1[21]); 158 s2[22] = vsubq_s16(s1[17], s2[22]); 159 s2[23] = vsubq_s16(s1[16], s2[23]); 160 161 s3[24] = vsubq_s16(s1[31], s2[24]); 162 s3[25] = vsubq_s16(s1[30], s2[25]); 163 s3[26] = vsubq_s16(s1[29], s1[26]); 164 s3[27] = vsubq_s16(s1[28], s1[27]); 165 s2[28] = vaddq_s16(s1[27], s1[28]); 166 s2[29] = vaddq_s16(s1[26], s1[29]); 167 s2[30] = vaddq_s16(s2[25], s1[30]); 168 s2[31] = vaddq_s16(s2[24], s1[31]); 169 170 // stage 7 171 s1[0] = vaddq_s16(s2[0], s2[15]); 172 s1[1] = vaddq_s16(s2[1], s2[14]); 173 s1[2] = vaddq_s16(s2[2], s2[13]); 174 s1[3] = vaddq_s16(s2[3], s2[12]); 175 s1[4] = vaddq_s16(s2[4], s2[11]); 176 s1[5] = vaddq_s16(s2[5], s2[10]); 177 s1[6] = vaddq_s16(s2[6], s2[9]); 178 s1[7] = vaddq_s16(s2[7], s2[8]); 179 s1[8] = vsubq_s16(s2[7], s2[8]); 180 s1[9] = vsubq_s16(s2[6], s2[9]); 181 s1[10] = vsubq_s16(s2[5], s2[10]); 182 s1[11] = vsubq_s16(s2[4], s2[11]); 183 s1[12] = vsubq_s16(s2[3], s2[12]); 184 s1[13] = vsubq_s16(s2[2], s2[13]); 185 s1[14] = vsubq_s16(s2[1], s2[14]); 186 s1[15] = vsubq_s16(s2[0], s2[15]); 187 188 s1[20] = sub_multiply_shift_and_narrow_s16(s3[27], s2[20], cospi_16_64); 189 s1[27] = add_multiply_shift_and_narrow_s16(s2[20], s3[27], cospi_16_64); 190 191 s1[21] = sub_multiply_shift_and_narrow_s16(s3[26], s2[21], cospi_16_64); 192 s1[26] = add_multiply_shift_and_narrow_s16(s2[21], s3[26], cospi_16_64); 193 194 s1[22] = sub_multiply_shift_and_narrow_s16(s3[25], s2[22], cospi_16_64); 195 s1[25] = add_multiply_shift_and_narrow_s16(s2[22], s3[25], cospi_16_64); 196 197 s1[23] = sub_multiply_shift_and_narrow_s16(s3[24], s2[23], cospi_16_64); 198 s1[24] = add_multiply_shift_and_narrow_s16(s2[23], s3[24], cospi_16_64); 199 200 // final stage 201 vst1q_s16(output, vaddq_s16(s1[0], s2[31])); 202 output += 8; 203 vst1q_s16(output, vaddq_s16(s1[1], s2[30])); 204 output += 8; 205 vst1q_s16(output, vaddq_s16(s1[2], s2[29])); 206 output += 8; 207 vst1q_s16(output, vaddq_s16(s1[3], s2[28])); 208 output += 8; 209 vst1q_s16(output, vaddq_s16(s1[4], s1[27])); 210 output += 8; 211 vst1q_s16(output, vaddq_s16(s1[5], s1[26])); 212 output += 8; 213 vst1q_s16(output, vaddq_s16(s1[6], s1[25])); 214 output += 8; 215 vst1q_s16(output, vaddq_s16(s1[7], s1[24])); 216 output += 8; 217 218 vst1q_s16(output, vaddq_s16(s1[8], s1[23])); 219 output += 8; 220 vst1q_s16(output, vaddq_s16(s1[9], s1[22])); 221 output += 8; 222 vst1q_s16(output, vaddq_s16(s1[10], s1[21])); 223 output += 8; 224 vst1q_s16(output, vaddq_s16(s1[11], s1[20])); 225 output += 8; 226 vst1q_s16(output, vaddq_s16(s1[12], s2[19])); 227 output += 8; 228 vst1q_s16(output, vaddq_s16(s1[13], s2[18])); 229 output += 8; 230 vst1q_s16(output, vaddq_s16(s1[14], s2[17])); 231 output += 8; 232 vst1q_s16(output, vaddq_s16(s1[15], s2[16])); 233 output += 8; 234 235 vst1q_s16(output, vsubq_s16(s1[15], s2[16])); 236 output += 8; 237 vst1q_s16(output, vsubq_s16(s1[14], s2[17])); 238 output += 8; 239 vst1q_s16(output, vsubq_s16(s1[13], s2[18])); 240 output += 8; 241 vst1q_s16(output, vsubq_s16(s1[12], s2[19])); 242 output += 8; 243 vst1q_s16(output, vsubq_s16(s1[11], s1[20])); 244 output += 8; 245 vst1q_s16(output, vsubq_s16(s1[10], s1[21])); 246 output += 8; 247 vst1q_s16(output, vsubq_s16(s1[9], s1[22])); 248 output += 8; 249 vst1q_s16(output, vsubq_s16(s1[8], s1[23])); 250 output += 8; 251 252 vst1q_s16(output, vsubq_s16(s1[7], s1[24])); 253 output += 8; 254 vst1q_s16(output, vsubq_s16(s1[6], s1[25])); 255 output += 8; 256 vst1q_s16(output, vsubq_s16(s1[5], s1[26])); 257 output += 8; 258 vst1q_s16(output, vsubq_s16(s1[4], s1[27])); 259 output += 8; 260 vst1q_s16(output, vsubq_s16(s1[3], s2[28])); 261 output += 8; 262 vst1q_s16(output, vsubq_s16(s1[2], s2[29])); 263 output += 8; 264 vst1q_s16(output, vsubq_s16(s1[1], s2[30])); 265 output += 8; 266 vst1q_s16(output, vsubq_s16(s1[0], s2[31])); 267 } 268 269 void vpx_idct32_8_neon(const int16_t *input, void *const output, int stride, 270 const int highbd_flag) { 271 int16x8_t in[8], s1[32], s2[32], s3[32], out[32]; 272 273 load_and_transpose_s16_8x8(input, 8, &in[0], &in[1], &in[2], &in[3], &in[4], 274 &in[5], &in[6], &in[7]); 275 276 // stage 1 277 s1[16] = multiply_shift_and_narrow_s16(in[1], cospi_31_64); 278 s1[31] = multiply_shift_and_narrow_s16(in[1], cospi_1_64); 279 280 // Different for _8_ 281 s1[19] = multiply_shift_and_narrow_s16(in[7], -cospi_25_64); 282 s1[28] = multiply_shift_and_narrow_s16(in[7], cospi_7_64); 283 284 s1[20] = multiply_shift_and_narrow_s16(in[5], cospi_27_64); 285 s1[27] = multiply_shift_and_narrow_s16(in[5], cospi_5_64); 286 287 s1[23] = multiply_shift_and_narrow_s16(in[3], -cospi_29_64); 288 s1[24] = multiply_shift_and_narrow_s16(in[3], cospi_3_64); 289 290 // stage 2 291 s2[8] = multiply_shift_and_narrow_s16(in[2], cospi_30_64); 292 s2[15] = multiply_shift_and_narrow_s16(in[2], cospi_2_64); 293 294 s2[11] = multiply_shift_and_narrow_s16(in[6], -cospi_26_64); 295 s2[12] = multiply_shift_and_narrow_s16(in[6], cospi_6_64); 296 297 // stage 3 298 s1[4] = multiply_shift_and_narrow_s16(in[4], cospi_28_64); 299 s1[7] = multiply_shift_and_narrow_s16(in[4], cospi_4_64); 300 301 s1[17] = multiply_accumulate_shift_and_narrow_s16(s1[16], -cospi_4_64, s1[31], 302 cospi_28_64); 303 s1[30] = multiply_accumulate_shift_and_narrow_s16(s1[16], cospi_28_64, s1[31], 304 cospi_4_64); 305 306 // Different for _8_ 307 s1[18] = multiply_accumulate_shift_and_narrow_s16(s1[19], -cospi_28_64, 308 s1[28], -cospi_4_64); 309 s1[29] = multiply_accumulate_shift_and_narrow_s16(s1[19], -cospi_4_64, s1[28], 310 cospi_28_64); 311 312 s1[21] = multiply_accumulate_shift_and_narrow_s16(s1[20], -cospi_20_64, 313 s1[27], cospi_12_64); 314 s1[26] = multiply_accumulate_shift_and_narrow_s16(s1[20], cospi_12_64, s1[27], 315 cospi_20_64); 316 317 s1[22] = multiply_accumulate_shift_and_narrow_s16(s1[23], -cospi_12_64, 318 s1[24], -cospi_20_64); 319 s1[25] = multiply_accumulate_shift_and_narrow_s16(s1[23], -cospi_20_64, 320 s1[24], cospi_12_64); 321 322 // stage 4 323 s1[0] = multiply_shift_and_narrow_s16(in[0], cospi_16_64); 324 325 s2[9] = multiply_accumulate_shift_and_narrow_s16(s2[8], -cospi_8_64, s2[15], 326 cospi_24_64); 327 s2[14] = multiply_accumulate_shift_and_narrow_s16(s2[8], cospi_24_64, s2[15], 328 cospi_8_64); 329 330 s2[10] = multiply_accumulate_shift_and_narrow_s16(s2[11], -cospi_24_64, 331 s2[12], -cospi_8_64); 332 s2[13] = multiply_accumulate_shift_and_narrow_s16(s2[11], -cospi_8_64, s2[12], 333 cospi_24_64); 334 335 s2[16] = vaddq_s16(s1[16], s1[19]); 336 337 s2[17] = vaddq_s16(s1[17], s1[18]); 338 s2[18] = vsubq_s16(s1[17], s1[18]); 339 340 s2[19] = vsubq_s16(s1[16], s1[19]); 341 342 s2[20] = vsubq_s16(s1[23], s1[20]); 343 s2[21] = vsubq_s16(s1[22], s1[21]); 344 345 s2[22] = vaddq_s16(s1[21], s1[22]); 346 s2[23] = vaddq_s16(s1[20], s1[23]); 347 348 s2[24] = vaddq_s16(s1[24], s1[27]); 349 s2[25] = vaddq_s16(s1[25], s1[26]); 350 s2[26] = vsubq_s16(s1[25], s1[26]); 351 s2[27] = vsubq_s16(s1[24], s1[27]); 352 353 s2[28] = vsubq_s16(s1[31], s1[28]); 354 s2[29] = vsubq_s16(s1[30], s1[29]); 355 s2[30] = vaddq_s16(s1[29], s1[30]); 356 s2[31] = vaddq_s16(s1[28], s1[31]); 357 358 // stage 5 359 s1[5] = sub_multiply_shift_and_narrow_s16(s1[7], s1[4], cospi_16_64); 360 s1[6] = add_multiply_shift_and_narrow_s16(s1[4], s1[7], cospi_16_64); 361 362 s1[8] = vaddq_s16(s2[8], s2[11]); 363 s1[9] = vaddq_s16(s2[9], s2[10]); 364 s1[10] = vsubq_s16(s2[9], s2[10]); 365 s1[11] = vsubq_s16(s2[8], s2[11]); 366 s1[12] = vsubq_s16(s2[15], s2[12]); 367 s1[13] = vsubq_s16(s2[14], s2[13]); 368 s1[14] = vaddq_s16(s2[13], s2[14]); 369 s1[15] = vaddq_s16(s2[12], s2[15]); 370 371 s1[18] = multiply_accumulate_shift_and_narrow_s16(s2[18], -cospi_8_64, s2[29], 372 cospi_24_64); 373 s1[29] = multiply_accumulate_shift_and_narrow_s16(s2[18], cospi_24_64, s2[29], 374 cospi_8_64); 375 376 s1[19] = multiply_accumulate_shift_and_narrow_s16(s2[19], -cospi_8_64, s2[28], 377 cospi_24_64); 378 s1[28] = multiply_accumulate_shift_and_narrow_s16(s2[19], cospi_24_64, s2[28], 379 cospi_8_64); 380 381 s1[20] = multiply_accumulate_shift_and_narrow_s16(s2[20], -cospi_24_64, 382 s2[27], -cospi_8_64); 383 s1[27] = multiply_accumulate_shift_and_narrow_s16(s2[20], -cospi_8_64, s2[27], 384 cospi_24_64); 385 386 s1[21] = multiply_accumulate_shift_and_narrow_s16(s2[21], -cospi_24_64, 387 s2[26], -cospi_8_64); 388 s1[26] = multiply_accumulate_shift_and_narrow_s16(s2[21], -cospi_8_64, s2[26], 389 cospi_24_64); 390 391 // stage 6 392 s2[0] = vaddq_s16(s1[0], s1[7]); 393 s2[1] = vaddq_s16(s1[0], s1[6]); 394 s2[2] = vaddq_s16(s1[0], s1[5]); 395 s2[3] = vaddq_s16(s1[0], s1[4]); 396 s2[4] = vsubq_s16(s1[0], s1[4]); 397 s2[5] = vsubq_s16(s1[0], s1[5]); 398 s2[6] = vsubq_s16(s1[0], s1[6]); 399 s2[7] = vsubq_s16(s1[0], s1[7]); 400 401 s2[10] = sub_multiply_shift_and_narrow_s16(s1[13], s1[10], cospi_16_64); 402 s2[13] = add_multiply_shift_and_narrow_s16(s1[10], s1[13], cospi_16_64); 403 404 s2[11] = sub_multiply_shift_and_narrow_s16(s1[12], s1[11], cospi_16_64); 405 s2[12] = add_multiply_shift_and_narrow_s16(s1[11], s1[12], cospi_16_64); 406 407 s1[16] = vaddq_s16(s2[16], s2[23]); 408 s1[17] = vaddq_s16(s2[17], s2[22]); 409 s2[18] = vaddq_s16(s1[18], s1[21]); 410 s2[19] = vaddq_s16(s1[19], s1[20]); 411 s2[20] = vsubq_s16(s1[19], s1[20]); 412 s2[21] = vsubq_s16(s1[18], s1[21]); 413 s1[22] = vsubq_s16(s2[17], s2[22]); 414 s1[23] = vsubq_s16(s2[16], s2[23]); 415 416 s3[24] = vsubq_s16(s2[31], s2[24]); 417 s3[25] = vsubq_s16(s2[30], s2[25]); 418 s3[26] = vsubq_s16(s1[29], s1[26]); 419 s3[27] = vsubq_s16(s1[28], s1[27]); 420 s2[28] = vaddq_s16(s1[27], s1[28]); 421 s2[29] = vaddq_s16(s1[26], s1[29]); 422 s2[30] = vaddq_s16(s2[25], s2[30]); 423 s2[31] = vaddq_s16(s2[24], s2[31]); 424 425 // stage 7 426 s1[0] = vaddq_s16(s2[0], s1[15]); 427 s1[1] = vaddq_s16(s2[1], s1[14]); 428 s1[2] = vaddq_s16(s2[2], s2[13]); 429 s1[3] = vaddq_s16(s2[3], s2[12]); 430 s1[4] = vaddq_s16(s2[4], s2[11]); 431 s1[5] = vaddq_s16(s2[5], s2[10]); 432 s1[6] = vaddq_s16(s2[6], s1[9]); 433 s1[7] = vaddq_s16(s2[7], s1[8]); 434 s1[8] = vsubq_s16(s2[7], s1[8]); 435 s1[9] = vsubq_s16(s2[6], s1[9]); 436 s1[10] = vsubq_s16(s2[5], s2[10]); 437 s1[11] = vsubq_s16(s2[4], s2[11]); 438 s1[12] = vsubq_s16(s2[3], s2[12]); 439 s1[13] = vsubq_s16(s2[2], s2[13]); 440 s1[14] = vsubq_s16(s2[1], s1[14]); 441 s1[15] = vsubq_s16(s2[0], s1[15]); 442 443 s1[20] = sub_multiply_shift_and_narrow_s16(s3[27], s2[20], cospi_16_64); 444 s1[27] = add_multiply_shift_and_narrow_s16(s2[20], s3[27], cospi_16_64); 445 446 s1[21] = sub_multiply_shift_and_narrow_s16(s3[26], s2[21], cospi_16_64); 447 s1[26] = add_multiply_shift_and_narrow_s16(s2[21], s3[26], cospi_16_64); 448 449 s2[22] = sub_multiply_shift_and_narrow_s16(s3[25], s1[22], cospi_16_64); 450 s1[25] = add_multiply_shift_and_narrow_s16(s1[22], s3[25], cospi_16_64); 451 452 s2[23] = sub_multiply_shift_and_narrow_s16(s3[24], s1[23], cospi_16_64); 453 s1[24] = add_multiply_shift_and_narrow_s16(s1[23], s3[24], cospi_16_64); 454 455 // final stage 456 out[0] = final_add(s1[0], s2[31]); 457 out[1] = final_add(s1[1], s2[30]); 458 out[2] = final_add(s1[2], s2[29]); 459 out[3] = final_add(s1[3], s2[28]); 460 out[4] = final_add(s1[4], s1[27]); 461 out[5] = final_add(s1[5], s1[26]); 462 out[6] = final_add(s1[6], s1[25]); 463 out[7] = final_add(s1[7], s1[24]); 464 out[8] = final_add(s1[8], s2[23]); 465 out[9] = final_add(s1[9], s2[22]); 466 out[10] = final_add(s1[10], s1[21]); 467 out[11] = final_add(s1[11], s1[20]); 468 out[12] = final_add(s1[12], s2[19]); 469 out[13] = final_add(s1[13], s2[18]); 470 out[14] = final_add(s1[14], s1[17]); 471 out[15] = final_add(s1[15], s1[16]); 472 out[16] = final_sub(s1[15], s1[16]); 473 out[17] = final_sub(s1[14], s1[17]); 474 out[18] = final_sub(s1[13], s2[18]); 475 out[19] = final_sub(s1[12], s2[19]); 476 out[20] = final_sub(s1[11], s1[20]); 477 out[21] = final_sub(s1[10], s1[21]); 478 out[22] = final_sub(s1[9], s2[22]); 479 out[23] = final_sub(s1[8], s2[23]); 480 out[24] = final_sub(s1[7], s1[24]); 481 out[25] = final_sub(s1[6], s1[25]); 482 out[26] = final_sub(s1[5], s1[26]); 483 out[27] = final_sub(s1[4], s1[27]); 484 out[28] = final_sub(s1[3], s2[28]); 485 out[29] = final_sub(s1[2], s2[29]); 486 out[30] = final_sub(s1[1], s2[30]); 487 out[31] = final_sub(s1[0], s2[31]); 488 489 if (highbd_flag) { 490 highbd_add_and_store_bd8(out, output, stride); 491 } else { 492 uint8_t *const outputT = (uint8_t *)output; 493 add_and_store_u8_s16(out[0], out[1], out[2], out[3], out[4], out[5], out[6], 494 out[7], outputT, stride); 495 add_and_store_u8_s16(out[8], out[9], out[10], out[11], out[12], out[13], 496 out[14], out[15], outputT + (8 * stride), stride); 497 add_and_store_u8_s16(out[16], out[17], out[18], out[19], out[20], out[21], 498 out[22], out[23], outputT + (16 * stride), stride); 499 add_and_store_u8_s16(out[24], out[25], out[26], out[27], out[28], out[29], 500 out[30], out[31], outputT + (24 * stride), stride); 501 } 502 } 503 504 void vpx_idct32x32_34_add_neon(const tran_low_t *input, uint8_t *dest, 505 int stride) { 506 int i; 507 int16_t temp[32 * 8]; 508 int16_t *t = temp; 509 510 vpx_idct32_6_neon(input, t); 511 512 for (i = 0; i < 32; i += 8) { 513 vpx_idct32_8_neon(t, dest, stride, 0); 514 t += (8 * 8); 515 dest += 8; 516 } 517 } 518
