vp9mc_neon.S (24513B)
1 /* 2 * Copyright (c) 2016 Google Inc. 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #include "libavutil/aarch64/asm.S" 22 23 // All public functions in this file have the following signature: 24 // typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride, 25 // const uint8_t *ref, ptrdiff_t ref_stride, 26 // int h, int mx, int my); 27 28 function ff_vp9_avg64_neon, export=1 29 mov x5, x0 30 1: 31 ld1 {v4.16b, v5.16b, v6.16b, v7.16b}, [x2], x3 32 ld1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x0], x1 33 ld1 {v20.16b, v21.16b, v22.16b, v23.16b}, [x2], x3 34 urhadd v0.16b, v0.16b, v4.16b 35 urhadd v1.16b, v1.16b, v5.16b 36 ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x0], x1 37 urhadd v2.16b, v2.16b, v6.16b 38 urhadd v3.16b, v3.16b, v7.16b 39 subs w4, w4, #2 40 urhadd v16.16b, v16.16b, v20.16b 41 urhadd v17.16b, v17.16b, v21.16b 42 st1 {v0.16b, v1.16b, v2.16b, v3.16b}, [x5], x1 43 urhadd v18.16b, v18.16b, v22.16b 44 urhadd v19.16b, v19.16b, v23.16b 45 st1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x5], x1 46 b.ne 1b 47 ret 48 endfunc 49 50 function ff_vp9_avg32_neon, export=1 51 1: 52 ld1 {v2.16b, v3.16b}, [x2], x3 53 ld1 {v0.16b, v1.16b}, [x0] 54 urhadd v0.16b, v0.16b, v2.16b 55 urhadd v1.16b, v1.16b, v3.16b 56 subs w4, w4, #1 57 st1 {v0.16b, v1.16b}, [x0], x1 58 b.ne 1b 59 ret 60 endfunc 61 62 function ff_vp9_copy16_neon, export=1 63 add x5, x0, x1 64 lsl x1, x1, #1 65 add x6, x2, x3 66 lsl x3, x3, #1 67 1: 68 ld1 {v0.16b}, [x2], x3 69 ld1 {v1.16b}, [x6], x3 70 ld1 {v2.16b}, [x2], x3 71 ld1 {v3.16b}, [x6], x3 72 subs w4, w4, #4 73 st1 {v0.16b}, [x0], x1 74 st1 {v1.16b}, [x5], x1 75 st1 {v2.16b}, [x0], x1 76 st1 {v3.16b}, [x5], x1 77 b.ne 1b 78 ret 79 endfunc 80 81 function ff_vp9_avg16_neon, export=1 82 mov x5, x0 83 1: 84 ld1 {v2.16b}, [x2], x3 85 ld1 {v0.16b}, [x0], x1 86 ld1 {v3.16b}, [x2], x3 87 urhadd v0.16b, v0.16b, v2.16b 88 ld1 {v1.16b}, [x0], x1 89 urhadd v1.16b, v1.16b, v3.16b 90 subs w4, w4, #2 91 st1 {v0.16b}, [x5], x1 92 st1 {v1.16b}, [x5], x1 93 b.ne 1b 94 ret 95 endfunc 96 97 function ff_vp9_copy8_neon, export=1 98 1: 99 ld1 {v0.8b}, [x2], x3 100 ld1 {v1.8b}, [x2], x3 101 subs w4, w4, #2 102 st1 {v0.8b}, [x0], x1 103 st1 {v1.8b}, [x0], x1 104 b.ne 1b 105 ret 106 endfunc 107 108 function ff_vp9_avg8_neon, export=1 109 mov x5, x0 110 1: 111 ld1 {v2.8b}, [x2], x3 112 ld1 {v0.8b}, [x0], x1 113 ld1 {v3.8b}, [x2], x3 114 urhadd v0.8b, v0.8b, v2.8b 115 ld1 {v1.8b}, [x0], x1 116 urhadd v1.8b, v1.8b, v3.8b 117 subs w4, w4, #2 118 st1 {v0.8b}, [x5], x1 119 st1 {v1.8b}, [x5], x1 120 b.ne 1b 121 ret 122 endfunc 123 124 function ff_vp9_copy4_neon, export=1 125 1: 126 ld1 {v0.s}[0], [x2], x3 127 ld1 {v1.s}[0], [x2], x3 128 st1 {v0.s}[0], [x0], x1 129 ld1 {v2.s}[0], [x2], x3 130 st1 {v1.s}[0], [x0], x1 131 ld1 {v3.s}[0], [x2], x3 132 subs w4, w4, #4 133 st1 {v2.s}[0], [x0], x1 134 st1 {v3.s}[0], [x0], x1 135 b.ne 1b 136 ret 137 endfunc 138 139 function ff_vp9_avg4_neon, export=1 140 mov x5, x0 141 1: 142 ld1 {v2.s}[0], [x2], x3 143 ld1 {v0.s}[0], [x0], x1 144 ld1 {v2.s}[1], [x2], x3 145 ld1 {v0.s}[1], [x0], x1 146 ld1 {v3.s}[0], [x2], x3 147 ld1 {v1.s}[0], [x0], x1 148 ld1 {v3.s}[1], [x2], x3 149 ld1 {v1.s}[1], [x0], x1 150 subs w4, w4, #4 151 urhadd v0.8b, v0.8b, v2.8b 152 urhadd v1.8b, v1.8b, v3.8b 153 st1 {v0.s}[0], [x5], x1 154 st1 {v0.s}[1], [x5], x1 155 st1 {v1.s}[0], [x5], x1 156 st1 {v1.s}[1], [x5], x1 157 b.ne 1b 158 ret 159 endfunc 160 161 162 // Extract a vector from src1-src2 and src4-src5 (src1-src3 and src4-src6 163 // for size >= 16), and multiply-accumulate into dst1 and dst3 (or 164 // dst1-dst2 and dst3-dst4 for size >= 16) 165 .macro extmla dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, offset, size 166 ext v20.16b, \src1\().16b, \src2\().16b, #(2*\offset) 167 ext v22.16b, \src4\().16b, \src5\().16b, #(2*\offset) 168 .if \size >= 16 169 mla \dst1\().8h, v20.8h, v0.h[\offset] 170 ext v21.16b, \src2\().16b, \src3\().16b, #(2*\offset) 171 mla \dst3\().8h, v22.8h, v0.h[\offset] 172 ext v23.16b, \src5\().16b, \src6\().16b, #(2*\offset) 173 mla \dst2\().8h, v21.8h, v0.h[\offset] 174 mla \dst4\().8h, v23.8h, v0.h[\offset] 175 .elseif \size == 8 176 mla \dst1\().8h, v20.8h, v0.h[\offset] 177 mla \dst3\().8h, v22.8h, v0.h[\offset] 178 .else 179 mla \dst1\().4h, v20.4h, v0.h[\offset] 180 mla \dst3\().4h, v22.4h, v0.h[\offset] 181 .endif 182 .endm 183 // The same as above, but don't accumulate straight into the 184 // destination, but use a temp register and accumulate with saturation. 185 .macro extmulqadd dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, offset, size 186 ext v20.16b, \src1\().16b, \src2\().16b, #(2*\offset) 187 ext v22.16b, \src4\().16b, \src5\().16b, #(2*\offset) 188 .if \size >= 16 189 mul v20.8h, v20.8h, v0.h[\offset] 190 ext v21.16b, \src2\().16b, \src3\().16b, #(2*\offset) 191 mul v22.8h, v22.8h, v0.h[\offset] 192 ext v23.16b, \src5\().16b, \src6\().16b, #(2*\offset) 193 mul v21.8h, v21.8h, v0.h[\offset] 194 mul v23.8h, v23.8h, v0.h[\offset] 195 .elseif \size == 8 196 mul v20.8h, v20.8h, v0.h[\offset] 197 mul v22.8h, v22.8h, v0.h[\offset] 198 .else 199 mul v20.4h, v20.4h, v0.h[\offset] 200 mul v22.4h, v22.4h, v0.h[\offset] 201 .endif 202 .if \size == 4 203 sqadd \dst1\().4h, \dst1\().4h, v20.4h 204 sqadd \dst3\().4h, \dst3\().4h, v22.4h 205 .else 206 sqadd \dst1\().8h, \dst1\().8h, v20.8h 207 sqadd \dst3\().8h, \dst3\().8h, v22.8h 208 .if \size >= 16 209 sqadd \dst2\().8h, \dst2\().8h, v21.8h 210 sqadd \dst4\().8h, \dst4\().8h, v23.8h 211 .endif 212 .endif 213 .endm 214 215 216 // Instantiate a horizontal filter function for the given size. 217 // This can work on 4, 8 or 16 pixels in parallel; for larger 218 // widths it will do 16 pixels at a time and loop horizontally. 219 // The actual width is passed in x5, the height in w4 and the 220 // filter coefficients in x9. idx2 is the index of the largest 221 // filter coefficient (3 or 4) and idx1 is the other one of them. 222 .macro do_8tap_h type, size, idx1, idx2 223 function \type\()_8tap_\size\()h_\idx1\idx2 224 sub x2, x2, #3 225 add x6, x0, x1 226 add x7, x2, x3 227 add x1, x1, x1 228 add x3, x3, x3 229 // Only size >= 16 loops horizontally and needs 230 // reduced dst stride 231 .if \size >= 16 232 sub x1, x1, x5 233 .elseif \size == 4 234 add x12, x2, #8 235 add x13, x7, #8 236 .endif 237 // size >= 16 loads two qwords and increments x2, 238 // for size 4/8 it's enough with one qword and no 239 // postincrement 240 .if \size >= 16 241 sub x3, x3, x5 242 sub x3, x3, #8 243 .endif 244 // Load the filter vector 245 ld1 {v0.8h}, [x9] 246 1: 247 .if \size >= 16 248 mov x9, x5 249 .endif 250 // Load src 251 .if \size >= 16 252 ld1 {v4.8b, v5.8b, v6.8b}, [x2], #24 253 ld1 {v16.8b, v17.8b, v18.8b}, [x7], #24 254 .elseif \size == 8 255 ld1 {v4.8b, v5.8b}, [x2] 256 ld1 {v16.8b, v17.8b}, [x7] 257 .else // \size == 4 258 ld1 {v4.8b}, [x2] 259 ld1 {v16.8b}, [x7] 260 ld1 {v5.s}[0], [x12], x3 261 ld1 {v17.s}[0], [x13], x3 262 .endif 263 uxtl v4.8h, v4.8b 264 uxtl v5.8h, v5.8b 265 uxtl v16.8h, v16.8b 266 uxtl v17.8h, v17.8b 267 .if \size >= 16 268 uxtl v6.8h, v6.8b 269 uxtl v18.8h, v18.8b 270 .endif 271 2: 272 273 // Accumulate, adding idx2 last with a separate 274 // saturating add. The positive filter coefficients 275 // for all indices except idx2 must add up to less 276 // than 127 for this not to overflow. 277 mul v1.8h, v4.8h, v0.h[0] 278 mul v24.8h, v16.8h, v0.h[0] 279 .if \size >= 16 280 mul v2.8h, v5.8h, v0.h[0] 281 mul v25.8h, v17.8h, v0.h[0] 282 .endif 283 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, 1, \size 284 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, 2, \size 285 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, \idx1, \size 286 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, 5, \size 287 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, 6, \size 288 extmla v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, 7, \size 289 extmulqadd v1, v2, v24, v25, v4, v5, v6, v16, v17, v18, \idx2, \size 290 291 // Round, shift and saturate 292 sqrshrun v1.8b, v1.8h, #7 293 sqrshrun v24.8b, v24.8h, #7 294 .if \size >= 16 295 sqrshrun2 v1.16b, v2.8h, #7 296 sqrshrun2 v24.16b, v25.8h, #7 297 .endif 298 // Average 299 .ifc \type,avg 300 .if \size >= 16 301 ld1 {v2.16b}, [x0] 302 ld1 {v3.16b}, [x6] 303 urhadd v1.16b, v1.16b, v2.16b 304 urhadd v24.16b, v24.16b, v3.16b 305 .elseif \size == 8 306 ld1 {v2.8b}, [x0] 307 ld1 {v3.8b}, [x6] 308 urhadd v1.8b, v1.8b, v2.8b 309 urhadd v24.8b, v24.8b, v3.8b 310 .else 311 ld1 {v2.s}[0], [x0] 312 ld1 {v3.s}[0], [x6] 313 urhadd v1.8b, v1.8b, v2.8b 314 urhadd v24.8b, v24.8b, v3.8b 315 .endif 316 .endif 317 // Store and loop horizontally (for size >= 16) 318 .if \size >= 16 319 subs x9, x9, #16 320 st1 {v1.16b}, [x0], #16 321 st1 {v24.16b}, [x6], #16 322 b.eq 3f 323 mov v4.16b, v6.16b 324 mov v16.16b, v18.16b 325 ld1 {v6.16b}, [x2], #16 326 ld1 {v18.16b}, [x7], #16 327 uxtl v5.8h, v6.8b 328 uxtl2 v6.8h, v6.16b 329 uxtl v17.8h, v18.8b 330 uxtl2 v18.8h, v18.16b 331 b 2b 332 .elseif \size == 8 333 st1 {v1.8b}, [x0] 334 st1 {v24.8b}, [x6] 335 .else // \size == 4 336 st1 {v1.s}[0], [x0] 337 st1 {v24.s}[0], [x6] 338 .endif 339 3: 340 // Loop vertically 341 add x0, x0, x1 342 add x6, x6, x1 343 add x2, x2, x3 344 add x7, x7, x3 345 subs w4, w4, #2 346 b.ne 1b 347 ret 348 endfunc 349 .endm 350 351 .macro do_8tap_h_size size 352 do_8tap_h put, \size, 3, 4 353 do_8tap_h avg, \size, 3, 4 354 do_8tap_h put, \size, 4, 3 355 do_8tap_h avg, \size, 4, 3 356 .endm 357 358 do_8tap_h_size 4 359 do_8tap_h_size 8 360 do_8tap_h_size 16 361 362 .macro do_8tap_h_func type, filter, offset, size 363 function ff_vp9_\type\()_\filter\()\size\()_h_neon, export=1 364 movrel x6, X(ff_vp9_subpel_filters), 256*\offset 365 cmp w5, #8 366 add x9, x6, w5, uxtw #4 367 mov x5, #\size 368 .if \size >= 16 369 b.ge \type\()_8tap_16h_34 370 b \type\()_8tap_16h_43 371 .else 372 b.ge \type\()_8tap_\size\()h_34 373 b \type\()_8tap_\size\()h_43 374 .endif 375 endfunc 376 .endm 377 378 .macro do_8tap_h_filters size 379 do_8tap_h_func put, regular, 1, \size 380 do_8tap_h_func avg, regular, 1, \size 381 do_8tap_h_func put, sharp, 2, \size 382 do_8tap_h_func avg, sharp, 2, \size 383 do_8tap_h_func put, smooth, 0, \size 384 do_8tap_h_func avg, smooth, 0, \size 385 .endm 386 387 do_8tap_h_filters 64 388 do_8tap_h_filters 32 389 do_8tap_h_filters 16 390 do_8tap_h_filters 8 391 do_8tap_h_filters 4 392 393 394 // Vertical filters 395 396 // Round, shift and saturate and store reg1-reg2 over 4 lines 397 .macro do_store4 reg1, reg2, tmp1, tmp2, type 398 sqrshrun \reg1\().8b, \reg1\().8h, #7 399 sqrshrun \reg2\().8b, \reg2\().8h, #7 400 .ifc \type,avg 401 ld1 {\tmp1\().s}[0], [x7], x1 402 ld1 {\tmp2\().s}[0], [x7], x1 403 ld1 {\tmp1\().s}[1], [x7], x1 404 ld1 {\tmp2\().s}[1], [x7], x1 405 urhadd \reg1\().8b, \reg1\().8b, \tmp1\().8b 406 urhadd \reg2\().8b, \reg2\().8b, \tmp2\().8b 407 .endif 408 st1 {\reg1\().s}[0], [x0], x1 409 st1 {\reg2\().s}[0], [x0], x1 410 st1 {\reg1\().s}[1], [x0], x1 411 st1 {\reg2\().s}[1], [x0], x1 412 .endm 413 414 // Round, shift and saturate and store reg1-4 415 .macro do_store reg1, reg2, reg3, reg4, tmp1, tmp2, tmp3, tmp4, type 416 sqrshrun \reg1\().8b, \reg1\().8h, #7 417 sqrshrun \reg2\().8b, \reg2\().8h, #7 418 sqrshrun \reg3\().8b, \reg3\().8h, #7 419 sqrshrun \reg4\().8b, \reg4\().8h, #7 420 .ifc \type,avg 421 ld1 {\tmp1\().8b}, [x7], x1 422 ld1 {\tmp2\().8b}, [x7], x1 423 ld1 {\tmp3\().8b}, [x7], x1 424 ld1 {\tmp4\().8b}, [x7], x1 425 urhadd \reg1\().8b, \reg1\().8b, \tmp1\().8b 426 urhadd \reg2\().8b, \reg2\().8b, \tmp2\().8b 427 urhadd \reg3\().8b, \reg3\().8b, \tmp3\().8b 428 urhadd \reg4\().8b, \reg4\().8b, \tmp4\().8b 429 .endif 430 st1 {\reg1\().8b}, [x0], x1 431 st1 {\reg2\().8b}, [x0], x1 432 st1 {\reg3\().8b}, [x0], x1 433 st1 {\reg4\().8b}, [x0], x1 434 .endm 435 436 // Evaluate the filter twice in parallel, from the inputs src1-src9 into dst1-dst2 437 // (src1-src8 into dst1, src2-src9 into dst2), adding idx2 separately 438 // at the end with saturation. Indices 0 and 7 always have negative or zero 439 // coefficients, so they can be accumulated into tmp1-tmp2 together with the 440 // largest coefficient. 441 .macro convolve dst1, dst2, src1, src2, src3, src4, src5, src6, src7, src8, src9, idx1, idx2, tmp1, tmp2 442 mul \dst1\().8h, \src2\().8h, v0.h[1] 443 mul \dst2\().8h, \src3\().8h, v0.h[1] 444 mul \tmp1\().8h, \src1\().8h, v0.h[0] 445 mul \tmp2\().8h, \src2\().8h, v0.h[0] 446 mla \dst1\().8h, \src3\().8h, v0.h[2] 447 mla \dst2\().8h, \src4\().8h, v0.h[2] 448 .if \idx1 == 3 449 mla \dst1\().8h, \src4\().8h, v0.h[3] 450 mla \dst2\().8h, \src5\().8h, v0.h[3] 451 .else 452 mla \dst1\().8h, \src5\().8h, v0.h[4] 453 mla \dst2\().8h, \src6\().8h, v0.h[4] 454 .endif 455 mla \dst1\().8h, \src6\().8h, v0.h[5] 456 mla \dst2\().8h, \src7\().8h, v0.h[5] 457 mla \tmp1\().8h, \src8\().8h, v0.h[7] 458 mla \tmp2\().8h, \src9\().8h, v0.h[7] 459 mla \dst1\().8h, \src7\().8h, v0.h[6] 460 mla \dst2\().8h, \src8\().8h, v0.h[6] 461 .if \idx2 == 3 462 mla \tmp1\().8h, \src4\().8h, v0.h[3] 463 mla \tmp2\().8h, \src5\().8h, v0.h[3] 464 .else 465 mla \tmp1\().8h, \src5\().8h, v0.h[4] 466 mla \tmp2\().8h, \src6\().8h, v0.h[4] 467 .endif 468 sqadd \dst1\().8h, \dst1\().8h, \tmp1\().8h 469 sqadd \dst2\().8h, \dst2\().8h, \tmp2\().8h 470 .endm 471 472 // Load pixels and extend them to 16 bit 473 .macro loadl dst1, dst2, dst3, dst4 474 ld1 {v1.8b}, [x2], x3 475 ld1 {v2.8b}, [x2], x3 476 ld1 {v3.8b}, [x2], x3 477 .ifnb \dst4 478 ld1 {v4.8b}, [x2], x3 479 .endif 480 uxtl \dst1\().8h, v1.8b 481 uxtl \dst2\().8h, v2.8b 482 uxtl \dst3\().8h, v3.8b 483 .ifnb \dst4 484 uxtl \dst4\().8h, v4.8b 485 .endif 486 .endm 487 488 // Instantiate a vertical filter function for filtering 8 pixels at a time. 489 // The height is passed in x4, the width in x5 and the filter coefficients 490 // in x6. idx2 is the index of the largest filter coefficient (3 or 4) 491 // and idx1 is the other one of them. 492 .macro do_8tap_8v type, idx1, idx2 493 function \type\()_8tap_8v_\idx1\idx2 494 sub x2, x2, x3, lsl #1 495 sub x2, x2, x3 496 ld1 {v0.8h}, [x6] 497 1: 498 .ifc \type,avg 499 mov x7, x0 500 .endif 501 mov x6, x4 502 503 loadl v17, v18, v19 504 505 loadl v20, v21, v22, v23 506 2: 507 loadl v24, v25, v26, v27 508 convolve v1, v2, v17, v18, v19, v20, v21, v22, v23, v24, v25, \idx1, \idx2, v5, v6 509 convolve v3, v4, v19, v20, v21, v22, v23, v24, v25, v26, v27, \idx1, \idx2, v5, v6 510 do_store v1, v2, v3, v4, v5, v6, v7, v28, \type 511 512 subs x6, x6, #4 513 b.eq 8f 514 515 loadl v16, v17, v18, v19 516 convolve v1, v2, v21, v22, v23, v24, v25, v26, v27, v16, v17, \idx1, \idx2, v5, v6 517 convolve v3, v4, v23, v24, v25, v26, v27, v16, v17, v18, v19, \idx1, \idx2, v5, v6 518 do_store v1, v2, v3, v4, v5, v6, v7, v28, \type 519 520 subs x6, x6, #4 521 b.eq 8f 522 523 loadl v20, v21, v22, v23 524 convolve v1, v2, v25, v26, v27, v16, v17, v18, v19, v20, v21, \idx1, \idx2, v5, v6 525 convolve v3, v4, v27, v16, v17, v18, v19, v20, v21, v22, v23, \idx1, \idx2, v5, v6 526 do_store v1, v2, v3, v4, v5, v6, v7, v28, \type 527 528 subs x6, x6, #4 529 b.ne 2b 530 531 8: 532 subs x5, x5, #8 533 b.eq 9f 534 // x0 -= h * dst_stride 535 msub x0, x1, x4, x0 536 // x2 -= h * src_stride 537 msub x2, x3, x4, x2 538 // x2 -= 8 * src_stride 539 sub x2, x2, x3, lsl #3 540 // x2 += 1 * src_stride 541 add x2, x2, x3 542 add x2, x2, #8 543 add x0, x0, #8 544 b 1b 545 9: 546 ret 547 endfunc 548 .endm 549 550 do_8tap_8v put, 3, 4 551 do_8tap_8v put, 4, 3 552 do_8tap_8v avg, 3, 4 553 do_8tap_8v avg, 4, 3 554 555 556 // Instantiate a vertical filter function for filtering a 4 pixels wide 557 // slice. The first half of the registers contain one row, while the second 558 // half of a register contains the second-next row (also stored in the first 559 // half of the register two steps ahead). The convolution does two outputs 560 // at a time; the output of v17-v24 into one, and v18-v25 into another one. 561 // The first half of first output is the first output row, the first half 562 // of the other output is the second output row. The second halves of the 563 // registers are rows 3 and 4. 564 // This only is designed to work for 4 or 8 output lines. 565 .macro do_8tap_4v type, idx1, idx2 566 function \type\()_8tap_4v_\idx1\idx2 567 sub x2, x2, x3, lsl #1 568 sub x2, x2, x3 569 ld1 {v0.8h}, [x6] 570 .ifc \type,avg 571 mov x7, x0 572 .endif 573 574 ld1 {v1.s}[0], [x2], x3 575 ld1 {v2.s}[0], [x2], x3 576 ld1 {v3.s}[0], [x2], x3 577 ld1 {v4.s}[0], [x2], x3 578 ld1 {v5.s}[0], [x2], x3 579 ld1 {v6.s}[0], [x2], x3 580 trn1 v1.2s, v1.2s, v3.2s 581 ld1 {v7.s}[0], [x2], x3 582 trn1 v2.2s, v2.2s, v4.2s 583 ld1 {v26.s}[0], [x2], x3 584 uxtl v17.8h, v1.8b 585 trn1 v3.2s, v3.2s, v5.2s 586 ld1 {v27.s}[0], [x2], x3 587 uxtl v18.8h, v2.8b 588 trn1 v4.2s, v4.2s, v6.2s 589 ld1 {v28.s}[0], [x2], x3 590 uxtl v19.8h, v3.8b 591 trn1 v5.2s, v5.2s, v7.2s 592 ld1 {v29.s}[0], [x2], x3 593 uxtl v20.8h, v4.8b 594 trn1 v6.2s, v6.2s, v26.2s 595 uxtl v21.8h, v5.8b 596 trn1 v7.2s, v7.2s, v27.2s 597 uxtl v22.8h, v6.8b 598 trn1 v26.2s, v26.2s, v28.2s 599 uxtl v23.8h, v7.8b 600 trn1 v27.2s, v27.2s, v29.2s 601 uxtl v24.8h, v26.8b 602 uxtl v25.8h, v27.8b 603 604 convolve v1, v2, v17, v18, v19, v20, v21, v22, v23, v24, v25, \idx1, \idx2, v3, v4 605 do_store4 v1, v2, v5, v6, \type 606 607 subs x4, x4, #4 608 b.eq 9f 609 610 ld1 {v1.s}[0], [x2], x3 611 ld1 {v2.s}[0], [x2], x3 612 trn1 v28.2s, v28.2s, v1.2s 613 trn1 v29.2s, v29.2s, v2.2s 614 ld1 {v1.s}[1], [x2], x3 615 uxtl v26.8h, v28.8b 616 ld1 {v2.s}[1], [x2], x3 617 uxtl v27.8h, v29.8b 618 uxtl v28.8h, v1.8b 619 uxtl v29.8h, v2.8b 620 621 convolve v1, v2, v21, v22, v23, v24, v25, v26, v27, v28, v29, \idx1, \idx2, v3, v4 622 do_store4 v1, v2, v5, v6, \type 623 624 9: 625 ret 626 endfunc 627 .endm 628 629 do_8tap_4v put, 3, 4 630 do_8tap_4v put, 4, 3 631 do_8tap_4v avg, 3, 4 632 do_8tap_4v avg, 4, 3 633 634 635 .macro do_8tap_v_func type, filter, offset, size 636 function ff_vp9_\type\()_\filter\()\size\()_v_neon, export=1 637 uxtw x4, w4 638 movrel x5, X(ff_vp9_subpel_filters), 256*\offset 639 cmp w6, #8 640 add x6, x5, w6, uxtw #4 641 mov x5, #\size 642 .if \size >= 8 643 b.ge \type\()_8tap_8v_34 644 b \type\()_8tap_8v_43 645 .else 646 b.ge \type\()_8tap_4v_34 647 b \type\()_8tap_4v_43 648 .endif 649 endfunc 650 .endm 651 652 .macro do_8tap_v_filters size 653 do_8tap_v_func put, regular, 1, \size 654 do_8tap_v_func avg, regular, 1, \size 655 do_8tap_v_func put, sharp, 2, \size 656 do_8tap_v_func avg, sharp, 2, \size 657 do_8tap_v_func put, smooth, 0, \size 658 do_8tap_v_func avg, smooth, 0, \size 659 .endm 660 661 do_8tap_v_filters 64 662 do_8tap_v_filters 32 663 do_8tap_v_filters 16 664 do_8tap_v_filters 8 665 do_8tap_v_filters 4