repositories / deb_ffmpeg.git / blame
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| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2014 Janne Grunau <janne-libav@jannau.net> | |
| 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 | #include "asm-offsets.h" | |
| 24 | ||
| 25 | .macro shuffle a, b, c, d | |
| 26 | const shuffle_\a\b\c\d, align=4 | |
| 27 | .byte (\a * 4), (\a * 4 + 1), (\a * 4 + 2), (\a * 4 + 3) | |
| 28 | .byte (\b * 4), (\b * 4 + 1), (\b * 4 + 2), (\b * 4 + 3) | |
| 29 | .byte (\c * 4), (\c * 4 + 1), (\c * 4 + 2), (\c * 4 + 3) | |
| 30 | .byte (\d * 4), (\d * 4 + 1), (\d * 4 + 2), (\d * 4 + 3) | |
| 31 | endconst | |
| 32 | .endm | |
| 33 | ||
| 34 | shuffle 0, 2, 1, 3 | |
| 35 | shuffle 1, 0, 3, 2 | |
| 36 | shuffle 2, 3, 0, 1 | |
| 37 | shuffle 3, 1, 2, 0 | |
| 38 | ||
| 39 | ||
| 40 | function fft5_neon | |
| 41 | lsl x2, x2, #3 | |
| 42 | ld1 {v24.2s}, [x1], x2 | |
| 43 | ld2 {v25.s,v26.s}[0], [x1], x2 | |
| 44 | ld2 {v25.s,v26.s}[1], [x1], x2 | |
| 45 | ld2 {v25.s,v26.s}[2], [x1], x2 | |
| 46 | ld2 {v25.s,v26.s}[3], [x1] | |
| 47 | dup v6.4s, v24.s[0] | |
| 48 | dup v7.4s, v24.s[1] | |
| 49 | ||
| 50 | faddp v0.4s, v25.4s, v26.4s | |
| 51 | // z[][0], z[][3] | |
| 52 | fmul v16.4s, v25.4s, v15.s[0] // rr | |
| 53 | fmul v17.4s, v25.4s, v15.s[1] // ri | |
| 54 | fmul v18.4s, v26.4s, v15.s[0] // ir | |
| 55 | fmul v19.4s, v26.4s, v15.s[1] // ii | |
| 56 | faddp v0.4s, v0.4s, v0.4s | |
| 57 | // z[][1], z[][2] | |
| 58 | fmul v20.4s, v25.4s, v15.s[2] // rr | |
| 59 | fmul v21.4s, v25.4s, v15.s[3] // ri | |
| 60 | fmul v22.4s, v26.4s, v15.s[2] // ir | |
| 61 | fmul v23.4s, v26.4s, v15.s[3] // ii | |
| 62 | fadd v0.2s, v24.2s, v0.2s // out[0] | |
| 63 | ||
| 64 | // z[0123][0], z[0123][3] | |
| 65 | fsub v24.4s, v16.4s, v19.4s // (c).re = rr - ii; | |
| 66 | fadd v27.4s, v16.4s, v19.4s // (d).re = rr + ii; | |
| 67 | ld1 {v16.16b}, [x11] | |
| 68 | ld1 {v19.16b}, [x14] | |
| 69 | fadd v28.4s, v17.4s, v18.4s // (c).im = ri + ir; | |
| 70 | fsub v31.4s, v18.4s, v17.4s // (d).im = -ri + ir; | |
| 71 | ld1 {v17.16b}, [x12] | |
| 72 | // z[0123][1], z[0123][2] | |
| 73 | fsub v25.4s, v20.4s, v23.4s // (c).re = rr - ii; | |
| 74 | fadd v26.4s, v20.4s, v23.4s // (d).re = rr + ii; | |
| 75 | ld1 {v18.16b}, [x13] | |
| 76 | fadd v29.4s, v21.4s, v22.4s // (c).im = ri + ir; | |
| 77 | fsub v30.4s, v22.4s, v21.4s // (d).im = -ri + ir; | |
| 78 | ||
| 79 | //real | |
| 80 | tbl v20.16b, {v24.16b}, v16.16b | |
| 81 | tbl v21.16b, {v25.16b}, v17.16b | |
| 82 | tbl v22.16b, {v26.16b}, v18.16b | |
| 83 | tbl v23.16b, {v27.16b}, v19.16b | |
| 84 | //imag | |
| 85 | tbl v16.16b, {v28.16b}, v16.16b | |
| 86 | tbl v17.16b, {v29.16b}, v17.16b | |
| 87 | tbl v18.16b, {v30.16b}, v18.16b | |
| 88 | tbl v19.16b, {v31.16b}, v19.16b | |
| 89 | ||
| 90 | fadd v6.4s, v6.4s, v20.4s | |
| 91 | fadd v22.4s, v22.4s, v23.4s | |
| 92 | fadd v7.4s, v7.4s, v16.4s | |
| 93 | fadd v18.4s, v18.4s, v19.4s | |
| 94 | ||
| 95 | fadd v21.4s, v21.4s, v22.4s | |
| 96 | fadd v17.4s, v17.4s, v18.4s | |
| 97 | fadd v6.4s, v6.4s, v21.4s | |
| 98 | fadd v7.4s, v7.4s, v17.4s | |
| 99 | ||
| 100 | ret | |
| 101 | endfunc | |
| 102 | ||
| 103 | function fft15_neon | |
| 104 | mov x8, x1 | |
| 105 | mov x9, x30 | |
| 106 | add x2, x3, x3, lsl #1 // 3 * stride | |
| 107 | ||
| 108 | add x1, x8, x3, lsl #3 // in + 1 * stride | |
| 109 | bl fft5_neon | |
| 110 | mov v1.8b, v0.8b | |
| 111 | mov v2.16b, v6.16b | |
| 112 | mov v3.16b, v7.16b | |
| 113 | ||
| 114 | add x1, x8, x3, lsl #4 // in + 2 * stride | |
| 115 | add x2, x3, x3, lsl #1 // 3 * stride | |
| 116 | bl fft5_neon | |
| 117 | zip1 v1.4s, v1.4s, v0.4s | |
| 118 | mov v4.16b, v6.16b | |
| 119 | mov v5.16b, v7.16b | |
| 120 | ||
| 121 | mov x1, x8 // in + 0 * stride | |
| 122 | add x2, x3, x3, lsl #1 // 3 * stride | |
| 123 | bl fft5_neon | |
| 124 | ||
| 125 | faddp v20.4s, v1.4s, v1.4s | |
| 126 | ||
| 127 | ext v18.16b, v8.16b, v8.16b, #4 | |
| 128 | ext v19.16b, v9.16b, v9.16b, #4 | |
| 129 | mov v16.16b, v6.16b | |
| 130 | mov v17.16b, v7.16b | |
| 131 | fadd v20.2s, v20.2s, v0.2s | |
| 132 | ||
| 133 | uzp1 v18.4s, v18.4s, v10.4s // exp[2,4,6,8].re | |
| 134 | uzp1 v19.4s, v19.4s, v11.4s // exp[2,4,6,8].im | |
| 135 | ||
| 136 | st1 {v20.2s}, [x0], #8 // out[0] | |
| 137 | ||
| 138 | fmla v16.4s, v2.4s, v8.4s | |
| 139 | fmls v16.4s, v3.4s, v9.4s | |
| 140 | ||
| 141 | fmla v17.4s, v2.4s, v9.4s | |
| 142 | fmla v17.4s, v3.4s, v8.4s | |
| 143 | ||
| 144 | fmla v16.4s, v4.4s, v18.4s | |
| 145 | fmls v16.4s, v5.4s, v19.4s | |
| 146 | ||
| 147 | fmla v17.4s, v4.4s, v19.4s | |
| 148 | fmla v17.4s, v5.4s, v18.4s | |
| 149 | ||
| 150 | zip1 v18.4s, v16.4s, v17.4s | |
| 151 | zip2 v19.4s, v16.4s, v17.4s | |
| 152 | ||
| 153 | rev64 v31.4s, v14.4s | |
| 154 | trn1 v28.2d, v1.2d, v1.2d | |
| 155 | trn2 v29.2d, v1.2d, v1.2d | |
| 156 | zip1 v30.2d, v14.2d, v31.2d | |
| 157 | zip2 v31.2d, v14.2d, v31.2d | |
| 158 | ||
| 159 | st1 {v18.4s,v19.4s}, [x0], #32 // out[1-4] | |
| 160 | ||
| 161 | fmul v16.4s, v28.4s, v30.4s | |
| 162 | fmul v17.4s, v29.4s, v30.4s | |
| 163 | fmls v16.4s, v29.4s, v31.4s | |
| 164 | fmla v17.4s, v28.4s, v31.4s | |
| 165 | faddp v16.4s, v16.4s, v16.4s | |
| 166 | faddp v17.4s, v17.4s, v17.4s | |
| 167 | zip1 v18.2s, v16.2s, v17.2s | |
| 168 | zip2 v19.2s, v16.2s, v17.2s | |
| 169 | ||
| 170 | fadd v18.2s, v18.2s, v0.2s | |
| 171 | fadd v0.2s, v19.2s, v0.2s | |
| 172 | ||
| 173 | ext v30.16b, v12.16b, v12.16b, #4 | |
| 174 | ext v31.16b, v13.16b, v13.16b, #4 | |
| 175 | mov v16.16b, v6.16b | |
| 176 | mov v17.16b, v7.16b | |
| 177 | ||
| 178 | uzp1 v30.4s, v30.4s, v8.4s | |
| 179 | uzp1 v31.4s, v31.4s, v9.4s | |
| 180 | ||
| 181 | st1 {v18.2s}, [x0], #8 // out[5] | |
| 182 | ||
| 183 | fmla v16.4s, v2.4s, v10.4s | |
| 184 | fmls v16.4s, v3.4s, v11.4s | |
| 185 | ||
| 186 | fmla v17.4s, v2.4s, v11.4s | |
| 187 | fmla v17.4s, v3.4s, v10.4s | |
| 188 | ||
| 189 | fmla v16.4s, v4.4s, v30.4s | |
| 190 | fmls v16.4s, v5.4s, v31.4s | |
| 191 | ||
| 192 | fmla v17.4s, v4.4s, v31.4s | |
| 193 | fmla v17.4s, v5.4s, v30.4s | |
| 194 | ||
| 195 | zip1 v18.4s, v16.4s, v17.4s | |
| 196 | zip2 v19.4s, v16.4s, v17.4s | |
| 197 | ||
| 198 | ext v30.16b, v10.16b, v10.16b, #4 | |
| 199 | ext v31.16b, v11.16b, v11.16b, #4 | |
| 200 | ||
| 201 | fmla v6.4s, v2.4s, v12.4s | |
| 202 | fmls v6.4s, v3.4s, v13.4s | |
| 203 | ||
| 204 | st1 {v18.4s,v19.4s}, [x0], #32 // out[6-9] | |
| 205 | ||
| 206 | uzp1 v30.4s, v30.4s, v12.4s | |
| 207 | uzp1 v31.4s, v31.4s, v13.4s | |
| 208 | ||
| 209 | fmla v7.4s, v2.4s, v13.4s | |
| 210 | fmla v7.4s, v3.4s, v12.4s | |
| 211 | ||
| 212 | st1 {v0.2s}, [x0], #8 // out[10] | |
| 213 | ||
| 214 | fmla v6.4s, v4.4s, v30.4s | |
| 215 | fmls v6.4s, v5.4s, v31.4s | |
| 216 | ||
| 217 | fmla v7.4s, v4.4s, v31.4s | |
| 218 | fmla v7.4s, v5.4s, v30.4s | |
| 219 | ||
| 220 | zip1 v18.4s, v6.4s, v7.4s | |
| 221 | zip2 v19.4s, v6.4s, v7.4s | |
| 222 | ||
| 223 | st1 {v18.4s,v19.4s}, [x0], #32 // out[11-14] | |
| 224 | ||
| 225 | ret x9 | |
| 226 | endfunc | |
| 227 | ||
| 228 | // x0: out, x1: out+len2, x2: exptab, x3: len2 | |
| 229 | function fft15_pass | |
| 230 | ands x6, x3, #3 | |
| 231 | mov x4, x0 | |
| 232 | mov x5, x1 | |
| 233 | b.eq 9f | |
| 234 | ld1 {v0.2s}, [x0], #8 | |
| 235 | ld1 {v1.2s}, [x1], #8 | |
| 236 | sub x3, x3, x6 | |
| 237 | subs x6, x6, #1 | |
| 238 | fadd v2.2s, v0.2s, v1.2s | |
| 239 | fsub v3.2s, v0.2s, v1.2s | |
| 240 | add x2, x2, #8 | |
| 241 | st1 {v2.2s}, [x4], #8 | |
| 242 | st1 {v3.2s}, [x5], #8 | |
| 243 | b.eq 9f | |
| 244 | 1: | |
| 245 | subs x6, x6, #1 | |
| 246 | ldp s4, s5, [x2], #8 | |
| 247 | ldp s2, s3, [x1], #8 | |
| 248 | ldp s0, s1, [x0], #8 | |
| 249 | ||
| 250 | fmul s6, s2, s4 | |
| 251 | fmul s7, s2, s5 | |
| 252 | fmls s6, s3, v5.s[0] | |
| 253 | fmla s7, s3, v4.s[0] | |
| 254 | ||
| 255 | fsub s2, s0, s6 | |
| 256 | fsub s3, s1, s7 | |
| 257 | fadd s0, s0, s6 | |
| 258 | fadd s1, s1, s7 | |
| 259 | ||
| 260 | stp s2, s3, [x5], #8 | |
| 261 | stp s0, s1, [x4], #8 | |
| 262 | b.gt 1b | |
| 263 | 9: | |
| 264 | ld1 {v4.4s,v5.4s}, [x2], #32 | |
| 265 | ld2 {v2.4s,v3.4s}, [x1], #32 | |
| 266 | uzp1 v6.4s, v4.4s, v5.4s | |
| 267 | uzp2 v7.4s, v4.4s, v5.4s | |
| 268 | ld2 {v0.4s,v1.4s}, [x0], #32 | |
| 269 | 8: | |
| 270 | subs x3, x3, #8 | |
| 271 | ||
| 272 | fmul v4.4s, v2.4s, v6.4s | |
| 273 | fmul v5.4s, v2.4s, v7.4s | |
| 274 | b.lt 4f | |
| 275 | ||
| 276 | ld1 {v18.4s,v19.4s}, [x2], #32 | |
| 277 | ||
| 278 | fmls v4.4s, v3.4s, v7.4s | |
| 279 | fmla v5.4s, v3.4s, v6.4s | |
| 280 | ||
| 281 | ld2 {v22.4s,v23.4s}, [x1], #32 | |
| 282 | ||
| 283 | fsub v2.4s, v0.4s, v4.4s | |
| 284 | fadd v0.4s, v0.4s, v4.4s | |
| 285 | fsub v3.4s, v1.4s, v5.4s | |
| 286 | fadd v1.4s, v1.4s, v5.4s | |
| 287 | ||
| 288 | uzp1 v16.4s, v18.4s, v19.4s | |
| 289 | uzp2 v17.4s, v18.4s, v19.4s | |
| 290 | ||
| 291 | st2 {v2.4s,v3.4s}, [x5], #32 | |
| 292 | st2 {v0.4s,v1.4s}, [x4], #32 | |
| 293 | ld2 {v20.4s,v21.4s}, [x0], #32 | |
| 294 | ||
| 295 | fmul v18.4s, v22.4s, v16.4s | |
| 296 | fmul v19.4s, v22.4s, v17.4s | |
| 297 | b.eq 0f | |
| 298 | ||
| 299 | ld1 {v4.4s,v5.4s}, [x2], #32 | |
| 300 | ||
| 301 | fmls v18.4s, v23.4s, v17.4s | |
| 302 | fmla v19.4s, v23.4s, v16.4s | |
| 303 | ||
| 304 | ld2 {v2.4s,v3.4s}, [x1], #32 | |
| 305 | ||
| 306 | fsub v22.4s, v20.4s, v18.4s | |
| 307 | fadd v20.4s, v20.4s, v18.4s | |
| 308 | fsub v23.4s, v21.4s, v19.4s | |
| 309 | fadd v21.4s, v21.4s, v19.4s | |
| 310 | ||
| 311 | uzp1 v6.4s, v4.4s, v5.4s | |
| 312 | uzp2 v7.4s, v4.4s, v5.4s | |
| 313 | ||
| 314 | st2 {v22.4s,v23.4s}, [x5], #32 | |
| 315 | st2 {v20.4s,v21.4s}, [x4], #32 | |
| 316 | ld2 {v0.4s,v1.4s}, [x0], #32 | |
| 317 | ||
| 318 | b 8b | |
| 319 | 4: | |
| 320 | fmls v4.4s, v3.4s, v7.4s | |
| 321 | fmla v5.4s, v3.4s, v6.4s | |
| 322 | ||
| 323 | fsub v2.4s, v0.4s, v4.4s | |
| 324 | fadd v0.4s, v0.4s, v4.4s | |
| 325 | fsub v3.4s, v1.4s, v5.4s | |
| 326 | fadd v1.4s, v1.4s, v5.4s | |
| 327 | ||
| 328 | st2 {v2.4s,v3.4s}, [x5], #32 | |
| 329 | st2 {v0.4s,v1.4s}, [x4], #32 | |
| 330 | ||
| 331 | ret | |
| 332 | 0: | |
| 333 | fmls v18.4s, v23.4s, v17.4s | |
| 334 | fmla v19.4s, v23.4s, v16.4s | |
| 335 | ||
| 336 | fsub v22.4s, v20.4s, v18.4s | |
| 337 | fadd v20.4s, v20.4s, v18.4s | |
| 338 | fsub v23.4s, v21.4s, v19.4s | |
| 339 | fadd v21.4s, v21.4s, v19.4s | |
| 340 | ||
| 341 | st2 {v22.4s,v23.4s}, [x5], #32 | |
| 342 | st2 {v20.4s,v21.4s}, [x4], #32 | |
| 343 | ||
| 344 | ret | |
| 345 | endfunc | |
| 346 | ||
| 347 | function fft30_neon, align=6 | |
| 348 | sub sp, sp, #0x20 | |
| 349 | stp x20, x21, [sp] | |
| 350 | stp x22, x30, [sp, #0x10] | |
| 351 | mov x21, x1 | |
| 352 | mov x22, x2 | |
| 353 | mov x20, x4 | |
| 354 | mov x0, x21 | |
| 355 | mov x1, x22 | |
| 356 | lsl x3, x20, #1 | |
| 357 | bl fft15_neon | |
| 358 | ||
| 359 | add x0, x21, #15*8 | |
| 360 | add x1, x22, x20, lsl #3 | |
| 361 | lsl x3, x20, #1 | |
| 362 | bl fft15_neon | |
| 363 | ||
| 364 | ldr x2, [x10, #(CELT_EXPTAB + 8)] // s->exptab[1] | |
| 365 | add x0, x21, #0 | |
| 366 | add x1, x21, #15*8 | |
| 367 | mov x3, #15 | |
| 368 | ldp x20, x21, [sp] | |
| 369 | ldp x22, x30, [sp, #0x10] | |
| 370 | add sp, sp, #0x20 | |
| 371 | b fft15_pass | |
| 372 | endfunc | |
| 373 | ||
| 374 | .macro def_fft n, n2 | |
| 375 | function fft\n\()_neon, align=6 | |
| 376 | sub sp, sp, #0x30 | |
| 377 | stp x20, x21, [sp] | |
| 378 | stp x22, x30, [sp, #0x10] | |
| 379 | stp x23, x24, [sp, #0x20] | |
| 380 | mov x21, x1 | |
| 381 | mov x22, x2 | |
| 382 | mov x23, x3 | |
| 383 | mov x20, x4 | |
| 384 | sub x3, x3, #1 | |
| 385 | lsl x4, x4, #1 | |
| 386 | bl fft\n2\()_neon | |
| 387 | ||
| 388 | add x1, x21, #(\n2 * 8) | |
| 389 | add x2, x22, x20, lsl #3 | |
| 390 | sub x3, x23, #1 | |
| 391 | lsl x4, x20, #1 | |
| 392 | bl fft\n2\()_neon | |
| 393 | ||
| 394 | add x5, x10, #CELT_EXPTAB | |
| 395 | mov x0, x21 | |
| 396 | ldr x2, [x5, x23, lsl #3] // s->exptab[N] | |
| 397 | add x1, x21, #(\n2 * 8) | |
| 398 | mov x3, #\n2 | |
| 399 | ldp x20, x21, [sp] | |
| 400 | ldp x22, x30, [sp, #0x10] | |
| 401 | ldp x23, x24, [sp, #0x20] | |
| 402 | add sp, sp, #0x30 | |
| 403 | b fft15_pass | |
| 404 | endfunc | |
| 405 | .endm | |
| 406 | ||
| 407 | def_fft 60, 30 | |
| 408 | def_fft 120, 60 | |
| 409 | def_fft 240, 120 | |
| 410 | def_fft 480, 240 | |
| 411 | def_fft 960, 480 | |
| 412 | ||
| 413 | function fft_b15_calc_neon | |
| 414 | sub sp, sp, #0x50 | |
| 415 | ldr x8, [x0, #CELT_EXPTAB] // s->exptab[0] | |
| 416 | movrel x6, fact5 | |
| 417 | movrel x11, shuffle_0213 | |
| 418 | movrel x12, shuffle_1032 | |
| 419 | movrel x13, shuffle_2301 | |
| 420 | movrel x14, shuffle_3120 | |
| 421 | add x8, x8, #8 | |
| 422 | movrel x5, fft_tab_neon | |
| 423 | stp x20, x30, [sp] | |
| 424 | stp d8, d9, [sp, #0x10] | |
| 425 | stp d10, d11, [sp, #0x20] | |
| 426 | stp d12, d13, [sp, #0x30] | |
| 427 | stp d14, d15, [sp, #0x40] | |
| 428 | ld1 {v15.4s}, [x6] | |
| 429 | ld1 {v0.4s,v1.4s}, [x8], #32 | |
| 430 | ld1 {v6.2s}, [x8], #8 | |
| 431 | ld1 {v2.4s,v3.4s}, [x8], #32 | |
| 432 | ld1 {v7.2s}, [x8], #8 | |
| 433 | ld1 {v4.4s,v5.4s}, [x8], #32 | |
| 434 | uzp1 v8.4s, v0.4s, v1.4s // exp[ 1 - 4].re | |
| 435 | uzp2 v9.4s, v0.4s, v1.4s // exp[ 1 - 4].im | |
| 436 | uzp1 v10.4s, v2.4s, v3.4s // exp[ 6 - 9].re | |
| 437 | uzp2 v11.4s, v2.4s, v3.4s // exp[ 6 - 9].im | |
| 438 | uzp1 v12.4s, v4.4s, v5.4s // exp[11 - 14].re | |
| 439 | uzp2 v13.4s, v4.4s, v5.4s // exp[11 - 14].im | |
| 440 | zip1 v14.4s, v6.4s, v7.4s // exp[5,10].re/exp[5,10].im | |
| 441 | add x5, x5, x3, lsl #3 | |
| 442 | ldr x5, [x5] | |
| 443 | mov x10, x0 | |
| 444 | blr x5 | |
| 445 | ldp x20, x30, [sp] | |
| 446 | ldp d8, d9, [sp, #0x10] | |
| 447 | ldp d10, d11, [sp, #0x20] | |
| 448 | ldp d12, d13, [sp, #0x30] | |
| 449 | ldp d14, d15, [sp, #0x40] | |
| 450 | add sp, sp, #0x50 | |
| 451 | ret | |
| 452 | endfunc | |
| 453 | ||
| 454 | const fft_tab_neon | |
| 455 | .quad fft15_neon | |
| 456 | .quad fft30_neon | |
| 457 | .quad fft60_neon | |
| 458 | .quad fft120_neon | |
| 459 | .quad fft240_neon | |
| 460 | .quad fft480_neon | |
| 461 | .quad fft960_neon | |
| 462 | endconst | |
| 463 | ||
| 464 | function ff_celt_imdct_half_neon, export=1 | |
| 465 | sub sp, sp, #0x20 | |
| 466 | stp x21, x30, [sp] | |
| 467 | str s0, [sp, #0x10] | |
| 468 | ||
| 469 | ldp w5, w6, [x0, #CELT_LEN2] // CELT_LEN4 | |
| 470 | mov x10, x0 | |
| 471 | mov x21, x1 | |
| 472 | sub w5, w5, #1 | |
| 473 | lsl x7, x3, #3 // 2 * stride * sizeof(float) | |
| 474 | sub x8, xzr, x3, lsl #3 // -2 * stride * sizeof(float) | |
| 475 | mul x5, x5, x3 | |
| 476 | ldp x9, x10, [x0, #CELT_TMP] // CELT_TWIDDLE | |
| 477 | ldr w3, [x0, #CELT_FFT_N] | |
| 478 | add x5, x2, x5, lsl #2 | |
| 479 | mov x11, x9 | |
| 480 | ||
| 481 | sub w6, w6, #4 | |
| 482 | ld1 {v0.s}[0], [x5], x8 | |
| 483 | ld1 {v1.s}[0], [x2], x7 | |
| 484 | ld1 {v4.4s,v5.4s}, [x10], #32 | |
| 485 | ld1 {v0.s}[1], [x5], x8 | |
| 486 | ld1 {v1.s}[1], [x2], x7 | |
| 487 | uzp1 v2.4s, v4.4s, v5.4s | |
| 488 | ld1 {v0.s}[2], [x5], x8 | |
| 489 | ld1 {v1.s}[2], [x2], x7 | |
| 490 | uzp2 v3.4s, v4.4s, v5.4s | |
| 491 | ld1 {v0.s}[3], [x5], x8 | |
| 492 | ld1 {v1.s}[3], [x2], x7 | |
| 493 | 1: | |
| 494 | subs w6, w6, #4 | |
| 495 | ||
| 496 | ld1 {v20.s}[0], [x5], x8 | |
| 497 | ld1 {v21.s}[0], [x2], x7 | |
| 498 | ld1 {v4.4s,v5.4s}, [x10], #32 | |
| 499 | ||
| 500 | fmul v6.4s, v0.4s, v2.4s | |
| 501 | fmul v7.4s, v0.4s, v3.4s | |
| 502 | ||
| 503 | ld1 {v20.s}[1], [x5], x8 | |
| 504 | ld1 {v21.s}[1], [x2], x7 | |
| 505 | ||
| 506 | fmls v6.4s, v1.4s, v3.4s | |
| 507 | fmla v7.4s, v1.4s, v2.4s | |
| 508 | ||
| 509 | ld1 {v20.s}[2], [x5], x8 | |
| 510 | ld1 {v21.s}[2], [x2], x7 | |
| 511 | ||
| 512 | uzp1 v2.4s, v4.4s, v5.4s | |
| 513 | uzp2 v3.4s, v4.4s, v5.4s | |
| 514 | ld1 {v20.s}[3], [x5], x8 | |
| 515 | ld1 {v21.s}[3], [x2], x7 | |
| 516 | ||
| 517 | zip1 v4.4s, v6.4s, v7.4s | |
| 518 | zip2 v5.4s, v6.4s, v7.4s | |
| 519 | ||
| 520 | fmul v6.4s, v20.4s, v2.4s | |
| 521 | fmul v7.4s, v20.4s, v3.4s | |
| 522 | ||
| 523 | st1 {v4.4s,v5.4s}, [x9], #32 | |
| 524 | ||
| 525 | fmls v6.4s, v21.4s, v3.4s | |
| 526 | fmla v7.4s, v21.4s, v2.4s | |
| 527 | ||
| 528 | b.eq 3f | |
| 529 | ||
| 530 | subs w6, w6, #4 | |
| 531 | ld1 {v4.4s,v5.4s}, [x10], #32 | |
| 532 | ld1 {v0.s}[0], [x5], x8 | |
| 533 | ld1 {v1.s}[0], [x2], x7 | |
| 534 | uzp1 v2.4s, v4.4s, v5.4s | |
| 535 | ld1 {v0.s}[1], [x5], x8 | |
| 536 | ld1 {v1.s}[1], [x2], x7 | |
| 537 | uzp2 v3.4s, v4.4s, v5.4s | |
| 538 | ld1 {v0.s}[2], [x5], x8 | |
| 539 | ld1 {v1.s}[2], [x2], x7 | |
| 540 | zip1 v4.4s, v6.4s, v7.4s | |
| 541 | zip2 v5.4s, v6.4s, v7.4s | |
| 542 | ld1 {v0.s}[3], [x5], x8 | |
| 543 | ld1 {v1.s}[3], [x2], x7 | |
| 544 | ||
| 545 | st1 {v4.4s,v5.4s}, [x9], #32 | |
| 546 | ||
| 547 | b.gt 1b | |
| 548 | ||
| 549 | fmul v6.4s, v0.4s, v2.4s | |
| 550 | fmul v7.4s, v0.4s, v3.4s | |
| 551 | fmls v6.4s, v1.4s, v3.4s | |
| 552 | fmla v7.4s, v1.4s, v2.4s | |
| 553 | 3: | |
| 554 | zip1 v4.4s, v6.4s, v7.4s | |
| 555 | zip2 v5.4s, v6.4s, v7.4s | |
| 556 | st1 {v4.4s,v5.4s}, [x9], #32 | |
| 557 | ||
| 558 | mov x2, x11 | |
| 559 | mov x4, #1 | |
| 560 | ||
| 561 | bl fft_b15_calc_neon | |
| 562 | ||
| 563 | ldr w5, [x10, #CELT_LEN4] | |
| 564 | ldr x6, [x10, #CELT_TWIDDLE] | |
| 565 | ldr s31, [sp, #0x10] | |
| 566 | ||
| 567 | add x1, x21, x5, lsl #2 | |
| 568 | add x3, x6, x5, lsl #2 | |
| 569 | sub x0, x1, #16 | |
| 570 | sub x2, x3, #16 | |
| 571 | mov x8, #-16 | |
| 572 | mov x7, #16 | |
| 573 | mov x10, x0 | |
| 574 | mov x11, x1 | |
| 575 | ||
| 576 | sub w5, w5, #4 | |
| 577 | ||
| 578 | ld1 {v0.4s}, [x0], x8 | |
| 579 | ld1 {v1.4s}, [x1], x7 | |
| 580 | ld1 {v2.4s}, [x2], x8 | |
| 581 | ld1 {v3.4s}, [x3], x7 | |
| 582 | ||
| 583 | uzp1 v4.4s, v0.4s, v1.4s // z[-i-2, -i-1, +i, i+1].re | |
| 584 | uzp2 v6.4s, v0.4s, v1.4s // z[-i-2, -i-1, +i, i+1].im | |
| 585 | ||
| 586 | uzp1 v5.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].re | |
| 587 | uzp2 v7.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].im | |
| 588 | ||
| 589 | fmul v1.4s, v6.4s, v5.4s | |
| 590 | fmul v0.4s, v6.4s, v7.4s | |
| 591 | 2: | |
| 592 | subs w5, w5, #4 | |
| 593 | ||
| 594 | ld1 {v20.4s}, [x0], x8 | |
| 595 | ||
| 596 | fmla v1.4s, v4.4s, v7.4s | |
| 597 | fmls v0.4s, v4.4s, v5.4s | |
| 598 | ||
| 599 | ld1 {v21.4s}, [x1], x7 | |
| 600 | ||
| 601 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 602 | fmul v0.4s, v0.4s, v31.s[0] | |
| 603 | ||
| 604 | ld1 {v2.4s}, [x2], x8 | |
| 605 | ||
| 606 | rev64 v1.4s, v1.4s | |
| 607 | fmul v1.4s, v1.4s, v31.s[0] | |
| 608 | ||
| 609 | ld1 {v3.4s}, [x3], x7 | |
| 610 | ||
| 611 | zip1 v5.4s, v0.4s, v1.4s | |
| 612 | zip2 v7.4s, v0.4s, v1.4s | |
| 613 | ||
| 614 | uzp1 v4.4s, v20.4s, v21.4s // z[-i-2, -i-1, +i, i+1].re | |
| 615 | uzp2 v6.4s, v20.4s, v21.4s // z[-i-2, -i-1, +i, i+1].im | |
| 616 | ||
| 617 | st1 {v5.4s}, [x10], x8 | |
| 618 | st1 {v7.4s}, [x11], x7 | |
| 619 | ||
| 620 | uzp1 v5.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].re | |
| 621 | uzp2 v7.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].im | |
| 622 | ||
| 623 | fmul v1.4s, v6.4s, v5.4s | |
| 624 | fmul v0.4s, v6.4s, v7.4s | |
| 625 | b.gt 2b | |
| 626 | ||
| 627 | fmla v1.4s, v4.4s, v7.4s | |
| 628 | fmls v0.4s, v4.4s, v5.4s | |
| 629 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 630 | fmul v0.4s, v0.4s, v31.s[0] | |
| 631 | rev64 v1.4s, v1.4s | |
| 632 | fmul v1.4s, v1.4s, v31.s[0] | |
| 633 | zip1 v5.4s, v0.4s, v1.4s | |
| 634 | zip2 v7.4s, v0.4s, v1.4s | |
| 635 | st1 {v5.4s}, [x10], x8 | |
| 636 | st1 {v7.4s}, [x11], x7 | |
| 637 | ||
| 638 | ldp x21, x30, [sp] | |
| 639 | add sp, sp, #0x20 | |
| 640 | ret | |
| 641 | endfunc | |
| 642 | ||
| 643 | // [0] = exp(2 * i * pi / 5), [1] = exp(2 * i * pi * 2 / 5) | |
| 644 | const fact5, align=4 | |
| 645 | .float 0.30901699437494745, 0.95105651629515353 | |
| 646 | .float -0.80901699437494734, 0.58778525229247325 | |
| 647 | endconst |