| 1 | /* |
| 2 | * Copyright (c) 2014 RISC OS Open Ltd |
| 3 | * Author: Ben Avison <bavison@riscosopen.org> |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include "libavutil/arm/asm.S" |
| 23 | |
| 24 | .macro loadregoffsh2 group, index, base, offgroup, offindex |
| 25 | .altmacro |
| 26 | loadregoffsh2_ \group, %(\index), \base, \offgroup, %(\offindex) |
| 27 | .noaltmacro |
| 28 | .endm |
| 29 | |
| 30 | .macro loadregoffsh2_ group, index, base, offgroup, offindex |
| 31 | ldr \group\index, [\base, \offgroup\offindex, lsl #2] |
| 32 | .endm |
| 33 | |
| 34 | .macro eorlslreg check, data, group, index |
| 35 | .altmacro |
| 36 | eorlslreg_ \check, \data, \group, %(\index) |
| 37 | .noaltmacro |
| 38 | .endm |
| 39 | |
| 40 | .macro eorlslreg_ check, data, group, index |
| 41 | eor \check, \check, \data, lsl \group\index |
| 42 | .endm |
| 43 | |
| 44 | .macro decr_modulo var, by, modulus |
| 45 | .set \var, \var - \by |
| 46 | .if \var == 0 |
| 47 | .set \var, \modulus |
| 48 | .endif |
| 49 | .endm |
| 50 | |
| 51 | .macro load_group1 size, channels, r0, r1, r2, r3, pointer_dead=0 |
| 52 | .if \size == 2 |
| 53 | ldrd \r0, \r1, [IN], #(\size + 8 - \channels) * 4 |
| 54 | .else // size == 4 |
| 55 | .if IDX1 > 4 || \channels==8 |
| 56 | ldm IN!, {\r0, \r1, \r2, \r3} |
| 57 | .else |
| 58 | ldm IN, {\r0, \r1, \r2, \r3} |
| 59 | .if !\pointer_dead |
| 60 | add IN, IN, #(4 + 8 - \channels) * 4 |
| 61 | .endif |
| 62 | .endif |
| 63 | .endif |
| 64 | decr_modulo IDX1, \size, \channels |
| 65 | .endm |
| 66 | |
| 67 | .macro load_group2 size, channels, r0, r1, r2, r3, pointer_dead=0 |
| 68 | .if \size == 2 |
| 69 | .if IDX1 > 2 |
| 70 | ldm IN!, {\r2, \r3} |
| 71 | .else |
| 72 | //A .ifc \r2, ip |
| 73 | //A .if \pointer_dead |
| 74 | //A ldm IN, {\r2, \r3} |
| 75 | //A .else |
| 76 | //A ldr \r2, [IN], #4 |
| 77 | //A ldr \r3, [IN], #(\size - 1 + 8 - \channels) * 4 |
| 78 | //A .endif |
| 79 | //A .else |
| 80 | ldrd \r2, \r3, [IN], #(\size + 8 - \channels) * 4 |
| 81 | //A .endif |
| 82 | .endif |
| 83 | .endif |
| 84 | decr_modulo IDX1, \size, \channels |
| 85 | .endm |
| 86 | |
| 87 | .macro implement_pack inorder, channels, shift |
| 88 | .if \inorder |
| 89 | .ifc \shift, mixed |
| 90 | |
| 91 | CHECK .req a1 |
| 92 | COUNT .req a2 |
| 93 | IN .req a3 |
| 94 | OUT .req a4 |
| 95 | DAT0 .req v1 |
| 96 | DAT1 .req v2 |
| 97 | DAT2 .req v3 |
| 98 | DAT3 .req v4 |
| 99 | SHIFT0 .req v5 |
| 100 | SHIFT1 .req v6 |
| 101 | SHIFT2 .req sl |
| 102 | SHIFT3 .req fp |
| 103 | SHIFT4 .req ip |
| 104 | SHIFT5 .req lr |
| 105 | |
| 106 | .macro output4words |
| 107 | .set SIZE_GROUP1, IDX1 |
| 108 | .if SIZE_GROUP1 > 4 |
| 109 | .set SIZE_GROUP1, 4 |
| 110 | .endif |
| 111 | .set SIZE_GROUP2, 4 - SIZE_GROUP1 |
| 112 | load_group1 SIZE_GROUP1, \channels, DAT0, DAT1, DAT2, DAT3 |
| 113 | load_group2 SIZE_GROUP2, \channels, DAT0, DAT1, DAT2, DAT3 |
| 114 | .if \channels == 2 |
| 115 | lsl DAT0, SHIFT0 |
| 116 | lsl DAT1, SHIFT1 |
| 117 | lsl DAT2, SHIFT0 |
| 118 | lsl DAT3, SHIFT1 |
| 119 | .elseif \channels == 6 |
| 120 | .if IDX2 == 6 |
| 121 | lsl DAT0, SHIFT0 |
| 122 | lsl DAT1, SHIFT1 |
| 123 | lsl DAT2, SHIFT2 |
| 124 | lsl DAT3, SHIFT3 |
| 125 | .elseif IDX2 == 2 |
| 126 | lsl DAT0, SHIFT4 |
| 127 | lsl DAT1, SHIFT5 |
| 128 | lsl DAT2, SHIFT0 |
| 129 | lsl DAT3, SHIFT1 |
| 130 | .else // IDX2 == 4 |
| 131 | lsl DAT0, SHIFT2 |
| 132 | lsl DAT1, SHIFT3 |
| 133 | lsl DAT2, SHIFT4 |
| 134 | lsl DAT3, SHIFT5 |
| 135 | .endif |
| 136 | .elseif \channels == 8 |
| 137 | .if IDX2 == 8 |
| 138 | uxtb SHIFT0, SHIFT4, ror #0 |
| 139 | uxtb SHIFT1, SHIFT4, ror #8 |
| 140 | uxtb SHIFT2, SHIFT4, ror #16 |
| 141 | uxtb SHIFT3, SHIFT4, ror #24 |
| 142 | .else |
| 143 | uxtb SHIFT0, SHIFT5, ror #0 |
| 144 | uxtb SHIFT1, SHIFT5, ror #8 |
| 145 | uxtb SHIFT2, SHIFT5, ror #16 |
| 146 | uxtb SHIFT3, SHIFT5, ror #24 |
| 147 | .endif |
| 148 | lsl DAT0, SHIFT0 |
| 149 | lsl DAT1, SHIFT1 |
| 150 | lsl DAT2, SHIFT2 |
| 151 | lsl DAT3, SHIFT3 |
| 152 | .endif |
| 153 | eor CHECK, CHECK, DAT0, lsr #8 - (\channels - IDX2) |
| 154 | eor CHECK, CHECK, DAT1, lsr #7 - (\channels - IDX2) |
| 155 | decr_modulo IDX2, 2, \channels |
| 156 | eor CHECK, CHECK, DAT2, lsr #8 - (\channels - IDX2) |
| 157 | eor CHECK, CHECK, DAT3, lsr #7 - (\channels - IDX2) |
| 158 | decr_modulo IDX2, 2, \channels |
| 159 | stm OUT!, {DAT0 - DAT3} |
| 160 | .endm |
| 161 | |
| 162 | .set WORDS_PER_LOOP, \channels // calculate LCM (channels, 4) |
| 163 | .if (WORDS_PER_LOOP % 2) == 0 |
| 164 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 165 | .endif |
| 166 | .if (WORDS_PER_LOOP % 2) == 0 |
| 167 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 168 | .endif |
| 169 | .set WORDS_PER_LOOP, WORDS_PER_LOOP * 4 |
| 170 | .set SAMPLES_PER_LOOP, WORDS_PER_LOOP / \channels |
| 171 | |
| 172 | function ff_mlp_pack_output_inorder_\channels\()ch_mixedshift_armv6, export=1 |
| 173 | .if SAMPLES_PER_LOOP > 1 |
| 174 | tst COUNT, #SAMPLES_PER_LOOP - 1 // always seems to be in practice |
| 175 | it ne |
| 176 | bne X(ff_mlp_pack_output) // but just in case, branch to C implementation if not |
| 177 | .endif |
| 178 | teq COUNT, #0 |
| 179 | it eq |
| 180 | bxeq lr |
| 181 | push {v1-v6,sl,fp,lr} |
| 182 | ldr SHIFT0, [sp, #(9+1)*4] // get output_shift from stack |
| 183 | ldr SHIFT1, =0x08080808 |
| 184 | ldr SHIFT4, [SHIFT0] |
| 185 | .if \channels == 2 |
| 186 | uadd8 SHIFT4, SHIFT4, SHIFT1 // increase all shifts by 8 |
| 187 | uxtb SHIFT0, SHIFT4, ror #0 |
| 188 | uxtb SHIFT1, SHIFT4, ror #8 |
| 189 | .else |
| 190 | ldr SHIFT5, [SHIFT0, #4] |
| 191 | uadd8 SHIFT4, SHIFT4, SHIFT1 // increase all shifts by 8 |
| 192 | uadd8 SHIFT5, SHIFT5, SHIFT1 |
| 193 | .if \channels == 6 |
| 194 | uxtb SHIFT0, SHIFT4, ror #0 |
| 195 | uxtb SHIFT1, SHIFT4, ror #8 |
| 196 | uxtb SHIFT2, SHIFT4, ror #16 |
| 197 | uxtb SHIFT3, SHIFT4, ror #24 |
| 198 | uxtb SHIFT4, SHIFT5, ror #0 |
| 199 | uxtb SHIFT5, SHIFT5, ror #8 |
| 200 | .endif |
| 201 | .endif |
| 202 | .set IDX1, \channels |
| 203 | .set IDX2, \channels |
| 204 | 0: |
| 205 | .rept WORDS_PER_LOOP / 4 |
| 206 | output4words |
| 207 | .endr |
| 208 | subs COUNT, COUNT, #SAMPLES_PER_LOOP |
| 209 | bne 0b |
| 210 | pop {v1-v6,sl,fp,pc} |
| 211 | .ltorg |
| 212 | endfunc |
| 213 | .purgem output4words |
| 214 | |
| 215 | .unreq CHECK |
| 216 | .unreq COUNT |
| 217 | .unreq IN |
| 218 | .unreq OUT |
| 219 | .unreq DAT0 |
| 220 | .unreq DAT1 |
| 221 | .unreq DAT2 |
| 222 | .unreq DAT3 |
| 223 | .unreq SHIFT0 |
| 224 | .unreq SHIFT1 |
| 225 | .unreq SHIFT2 |
| 226 | .unreq SHIFT3 |
| 227 | .unreq SHIFT4 |
| 228 | .unreq SHIFT5 |
| 229 | |
| 230 | .else // not mixed |
| 231 | |
| 232 | CHECK .req a1 |
| 233 | COUNT .req a2 |
| 234 | IN .req a3 |
| 235 | OUT .req a4 |
| 236 | DAT0 .req v1 |
| 237 | DAT1 .req v2 |
| 238 | DAT2 .req v3 |
| 239 | DAT3 .req v4 |
| 240 | DAT4 .req v5 |
| 241 | DAT5 .req v6 |
| 242 | DAT6 .req sl // use these rather than the otherwise unused |
| 243 | DAT7 .req fp // ip and lr so that we can load them usinf LDRD |
| 244 | |
| 245 | .macro output4words tail, head, r0, r1, r2, r3, r4, r5, r6, r7, pointer_dead=0 |
| 246 | .if \head |
| 247 | .set SIZE_GROUP1, IDX1 |
| 248 | .if SIZE_GROUP1 > 4 |
| 249 | .set SIZE_GROUP1, 4 |
| 250 | .endif |
| 251 | .set SIZE_GROUP2, 4 - SIZE_GROUP1 |
| 252 | load_group1 SIZE_GROUP1, \channels, \r0, \r1, \r2, \r3, \pointer_dead |
| 253 | .endif |
| 254 | .if \tail |
| 255 | eor CHECK, CHECK, \r4, lsr #8 - (\channels - IDX2) |
| 256 | eor CHECK, CHECK, \r5, lsr #7 - (\channels - IDX2) |
| 257 | decr_modulo IDX2, 2, \channels |
| 258 | .endif |
| 259 | .if \head |
| 260 | load_group2 SIZE_GROUP2, \channels, \r0, \r1, \r2, \r3, \pointer_dead |
| 261 | .endif |
| 262 | .if \tail |
| 263 | eor CHECK, CHECK, \r6, lsr #8 - (\channels - IDX2) |
| 264 | eor CHECK, CHECK, \r7, lsr #7 - (\channels - IDX2) |
| 265 | decr_modulo IDX2, 2, \channels |
| 266 | stm OUT!, {\r4, \r5, \r6, \r7} |
| 267 | .endif |
| 268 | .if \head |
| 269 | lsl \r0, #8 + \shift |
| 270 | lsl \r1, #8 + \shift |
| 271 | lsl \r2, #8 + \shift |
| 272 | lsl \r3, #8 + \shift |
| 273 | .endif |
| 274 | .endm |
| 275 | |
| 276 | .set WORDS_PER_LOOP, \channels // calculate LCM (channels, 8) |
| 277 | .if (WORDS_PER_LOOP % 2) == 0 |
| 278 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 279 | .endif |
| 280 | .if (WORDS_PER_LOOP % 2) == 0 |
| 281 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 282 | .endif |
| 283 | .if (WORDS_PER_LOOP % 2) == 0 |
| 284 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 285 | .endif |
| 286 | .set WORDS_PER_LOOP, WORDS_PER_LOOP * 8 |
| 287 | .set SAMPLES_PER_LOOP, WORDS_PER_LOOP / \channels |
| 288 | |
| 289 | function ff_mlp_pack_output_inorder_\channels\()ch_\shift\()shift_armv6, export=1 |
| 290 | .if SAMPLES_PER_LOOP > 1 |
| 291 | tst COUNT, #SAMPLES_PER_LOOP - 1 // always seems to be in practice |
| 292 | it ne |
| 293 | bne X(ff_mlp_pack_output) // but just in case, branch to C implementation if not |
| 294 | .endif |
| 295 | subs COUNT, COUNT, #SAMPLES_PER_LOOP |
| 296 | it lo |
| 297 | bxlo lr |
| 298 | push {v1-v6,sl,fp,lr} |
| 299 | .set IDX1, \channels |
| 300 | .set IDX2, \channels |
| 301 | output4words 0, 1, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7 |
| 302 | 0: beq 1f |
| 303 | .rept WORDS_PER_LOOP / 8 |
| 304 | output4words 1, 1, DAT4, DAT5, DAT6, DAT7, DAT0, DAT1, DAT2, DAT3 |
| 305 | output4words 1, 1, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7 |
| 306 | .endr |
| 307 | subs COUNT, COUNT, #SAMPLES_PER_LOOP |
| 308 | bne 0b |
| 309 | 1: |
| 310 | .rept WORDS_PER_LOOP / 8 - 1 |
| 311 | output4words 1, 1, DAT4, DAT5, DAT6, DAT7, DAT0, DAT1, DAT2, DAT3 |
| 312 | output4words 1, 1, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7 |
| 313 | .endr |
| 314 | output4words 1, 1, DAT4, DAT5, DAT6, DAT7, DAT0, DAT1, DAT2, DAT3, pointer_dead=1 |
| 315 | output4words 1, 0, DAT0, DAT1, DAT2, DAT3, DAT4, DAT5, DAT6, DAT7 |
| 316 | pop {v1-v6,sl,fp,pc} |
| 317 | endfunc |
| 318 | .purgem output4words |
| 319 | |
| 320 | .unreq CHECK |
| 321 | .unreq COUNT |
| 322 | .unreq IN |
| 323 | .unreq OUT |
| 324 | .unreq DAT0 |
| 325 | .unreq DAT1 |
| 326 | .unreq DAT2 |
| 327 | .unreq DAT3 |
| 328 | .unreq DAT4 |
| 329 | .unreq DAT5 |
| 330 | .unreq DAT6 |
| 331 | .unreq DAT7 |
| 332 | |
| 333 | .endif // mixed |
| 334 | .else // not inorder |
| 335 | .ifc \shift, mixed |
| 336 | |
| 337 | // This case not currently handled |
| 338 | |
| 339 | .else // not mixed |
| 340 | |
| 341 | #if !CONFIG_THUMB |
| 342 | |
| 343 | CHECK .req a1 |
| 344 | COUNT .req a2 |
| 345 | IN .req a3 |
| 346 | OUT .req a4 |
| 347 | DAT0 .req v1 |
| 348 | DAT1 .req v2 |
| 349 | DAT2 .req v3 |
| 350 | DAT3 .req v4 |
| 351 | CHAN0 .req v5 |
| 352 | CHAN1 .req v6 |
| 353 | CHAN2 .req sl |
| 354 | CHAN3 .req fp |
| 355 | CHAN4 .req ip |
| 356 | CHAN5 .req lr |
| 357 | |
| 358 | .macro output4words |
| 359 | .if \channels == 8 |
| 360 | .if IDX1 == 8 |
| 361 | uxtb CHAN0, CHAN4, ror #0 |
| 362 | uxtb CHAN1, CHAN4, ror #8 |
| 363 | uxtb CHAN2, CHAN4, ror #16 |
| 364 | uxtb CHAN3, CHAN4, ror #24 |
| 365 | .else |
| 366 | uxtb CHAN0, CHAN5, ror #0 |
| 367 | uxtb CHAN1, CHAN5, ror #8 |
| 368 | uxtb CHAN2, CHAN5, ror #16 |
| 369 | uxtb CHAN3, CHAN5, ror #24 |
| 370 | .endif |
| 371 | ldr DAT0, [IN, CHAN0, lsl #2] |
| 372 | ldr DAT1, [IN, CHAN1, lsl #2] |
| 373 | ldr DAT2, [IN, CHAN2, lsl #2] |
| 374 | ldr DAT3, [IN, CHAN3, lsl #2] |
| 375 | .if IDX1 == 4 |
| 376 | add IN, IN, #8*4 |
| 377 | .endif |
| 378 | decr_modulo IDX1, 4, \channels |
| 379 | .else |
| 380 | .set SIZE_GROUP1, IDX1 |
| 381 | .if SIZE_GROUP1 > 4 |
| 382 | .set SIZE_GROUP1, 4 |
| 383 | .endif |
| 384 | .set SIZE_GROUP2, 4 - SIZE_GROUP1 |
| 385 | .if SIZE_GROUP1 == 2 |
| 386 | loadregoffsh2 DAT, 0, IN, CHAN, 0 + (\channels - IDX1) |
| 387 | loadregoffsh2 DAT, 1, IN, CHAN, 1 + (\channels - IDX1) |
| 388 | add IN, IN, #8*4 |
| 389 | .else // SIZE_GROUP1 == 4 |
| 390 | loadregoffsh2 DAT, 0, IN, CHAN, 0 + (\channels - IDX1) |
| 391 | loadregoffsh2 DAT, 1, IN, CHAN, 1 + (\channels - IDX1) |
| 392 | loadregoffsh2 DAT, 2, IN, CHAN, 2 + (\channels - IDX1) |
| 393 | loadregoffsh2 DAT, 3, IN, CHAN, 3 + (\channels - IDX1) |
| 394 | .if IDX1 == 4 |
| 395 | add IN, IN, #8*4 |
| 396 | .endif |
| 397 | .endif |
| 398 | decr_modulo IDX1, SIZE_GROUP1, \channels |
| 399 | .if SIZE_GROUP2 == 2 |
| 400 | loadregoffsh2 DAT, 2, IN, CHAN, 0 + (\channels - IDX1) |
| 401 | loadregoffsh2 DAT, 3, IN, CHAN, 1 + (\channels - IDX1) |
| 402 | .if IDX1 == 2 |
| 403 | add IN, IN, #8*4 |
| 404 | .endif |
| 405 | .endif |
| 406 | decr_modulo IDX1, SIZE_GROUP2, \channels |
| 407 | .endif |
| 408 | .if \channels == 8 // in this case we can corrupt CHAN0-3 |
| 409 | rsb CHAN0, CHAN0, #8 |
| 410 | rsb CHAN1, CHAN1, #8 |
| 411 | rsb CHAN2, CHAN2, #8 |
| 412 | rsb CHAN3, CHAN3, #8 |
| 413 | lsl DAT0, #8 + \shift |
| 414 | lsl DAT1, #8 + \shift |
| 415 | lsl DAT2, #8 + \shift |
| 416 | lsl DAT3, #8 + \shift |
| 417 | eor CHECK, CHECK, DAT0, lsr CHAN0 |
| 418 | eor CHECK, CHECK, DAT1, lsr CHAN1 |
| 419 | eor CHECK, CHECK, DAT2, lsr CHAN2 |
| 420 | eor CHECK, CHECK, DAT3, lsr CHAN3 |
| 421 | .else |
| 422 | .if \shift != 0 |
| 423 | lsl DAT0, #\shift |
| 424 | lsl DAT1, #\shift |
| 425 | lsl DAT2, #\shift |
| 426 | lsl DAT3, #\shift |
| 427 | .endif |
| 428 | bic DAT0, DAT0, #0xff000000 |
| 429 | bic DAT1, DAT1, #0xff000000 |
| 430 | bic DAT2, DAT2, #0xff000000 |
| 431 | bic DAT3, DAT3, #0xff000000 |
| 432 | eorlslreg CHECK, DAT0, CHAN, 0 + (\channels - IDX2) |
| 433 | eorlslreg CHECK, DAT1, CHAN, 1 + (\channels - IDX2) |
| 434 | decr_modulo IDX2, 2, \channels |
| 435 | eorlslreg CHECK, DAT2, CHAN, 0 + (\channels - IDX2) |
| 436 | eorlslreg CHECK, DAT3, CHAN, 1 + (\channels - IDX2) |
| 437 | decr_modulo IDX2, 2, \channels |
| 438 | lsl DAT0, #8 |
| 439 | lsl DAT1, #8 |
| 440 | lsl DAT2, #8 |
| 441 | lsl DAT3, #8 |
| 442 | .endif |
| 443 | stm OUT!, {DAT0 - DAT3} |
| 444 | .endm |
| 445 | |
| 446 | .set WORDS_PER_LOOP, \channels // calculate LCM (channels, 4) |
| 447 | .if (WORDS_PER_LOOP % 2) == 0 |
| 448 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 449 | .endif |
| 450 | .if (WORDS_PER_LOOP % 2) == 0 |
| 451 | .set WORDS_PER_LOOP, WORDS_PER_LOOP / 2 |
| 452 | .endif |
| 453 | .set WORDS_PER_LOOP, WORDS_PER_LOOP * 4 |
| 454 | .set SAMPLES_PER_LOOP, WORDS_PER_LOOP / \channels |
| 455 | |
| 456 | function ff_mlp_pack_output_outoforder_\channels\()ch_\shift\()shift_armv6, export=1 |
| 457 | .if SAMPLES_PER_LOOP > 1 |
| 458 | tst COUNT, #SAMPLES_PER_LOOP - 1 // always seems to be in practice |
| 459 | it ne |
| 460 | bne X(ff_mlp_pack_output) // but just in case, branch to C implementation if not |
| 461 | .endif |
| 462 | teq COUNT, #0 |
| 463 | it eq |
| 464 | bxeq lr |
| 465 | push {v1-v6,sl,fp,lr} |
| 466 | ldr CHAN0, [sp, #(9+0)*4] // get ch_assign from stack |
| 467 | ldr CHAN4, [CHAN0] |
| 468 | .if \channels == 2 |
| 469 | uxtb CHAN0, CHAN4, ror #0 |
| 470 | uxtb CHAN1, CHAN4, ror #8 |
| 471 | .else |
| 472 | ldr CHAN5, [CHAN0, #4] |
| 473 | .if \channels == 6 |
| 474 | uxtb CHAN0, CHAN4, ror #0 |
| 475 | uxtb CHAN1, CHAN4, ror #8 |
| 476 | uxtb CHAN2, CHAN4, ror #16 |
| 477 | uxtb CHAN3, CHAN4, ror #24 |
| 478 | uxtb CHAN4, CHAN5, ror #0 |
| 479 | uxtb CHAN5, CHAN5, ror #8 |
| 480 | .endif |
| 481 | .endif |
| 482 | .set IDX1, \channels |
| 483 | .set IDX2, \channels |
| 484 | 0: |
| 485 | .rept WORDS_PER_LOOP / 4 |
| 486 | output4words |
| 487 | .endr |
| 488 | subs COUNT, COUNT, #SAMPLES_PER_LOOP |
| 489 | bne 0b |
| 490 | pop {v1-v6,sl,fp,pc} |
| 491 | .ltorg |
| 492 | endfunc |
| 493 | .purgem output4words |
| 494 | |
| 495 | .unreq CHECK |
| 496 | .unreq COUNT |
| 497 | .unreq IN |
| 498 | .unreq OUT |
| 499 | .unreq DAT0 |
| 500 | .unreq DAT1 |
| 501 | .unreq DAT2 |
| 502 | .unreq DAT3 |
| 503 | .unreq CHAN0 |
| 504 | .unreq CHAN1 |
| 505 | .unreq CHAN2 |
| 506 | .unreq CHAN3 |
| 507 | .unreq CHAN4 |
| 508 | .unreq CHAN5 |
| 509 | |
| 510 | #endif // !CONFIG_THUMB |
| 511 | |
| 512 | .endif // mixed |
| 513 | .endif // inorder |
| 514 | .endm // implement_pack |
| 515 | |
| 516 | .macro pack_channels inorder, channels |
| 517 | implement_pack \inorder, \channels, 0 |
| 518 | implement_pack \inorder, \channels, 1 |
| 519 | implement_pack \inorder, \channels, 2 |
| 520 | implement_pack \inorder, \channels, 3 |
| 521 | implement_pack \inorder, \channels, 4 |
| 522 | implement_pack \inorder, \channels, 5 |
| 523 | implement_pack \inorder, \channels, mixed |
| 524 | .endm |
| 525 | |
| 526 | .macro pack_order inorder |
| 527 | pack_channels \inorder, 2 |
| 528 | pack_channels \inorder, 6 |
| 529 | pack_channels \inorder, 8 |
| 530 | .endm |
| 531 | |
| 532 | pack_order 0 |
| 533 | pack_order 1 |