2 * Copyright (c) 2016 Google Inc.
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/arm/asm.S"
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);
28 function ff_vp9_copy64_neon, export=1
33 vld1.8 {q0, q1}, [r2]!
34 vst1.8 {q0, q1}, [r0, :128]!
35 vld1.8 {q2, q3}, [r2], r3
37 vst1.8 {q2, q3}, [r0, :128], r1
42 function ff_vp9_avg64_neon, export=1
49 vld1.8 {q8, q9}, [r2]!
50 vld1.8 {q0, q1}, [r0, :128]!
51 vld1.8 {q10, q11}, [r2], r3
53 vld1.8 {q2, q3}, [r0, :128], r1
56 vst1.8 {q0, q1}, [lr, :128]!
58 vst1.8 {q2, q3}, [lr, :128], r1
64 function ff_vp9_copy32_neon, export=1
67 vld1.8 {q0, q1}, [r2], r3
69 vst1.8 {q0, q1}, [r0, :128], r1
74 function ff_vp9_avg32_neon, export=1
77 vld1.8 {q2, q3}, [r2], r3
78 vld1.8 {q0, q1}, [r0, :128]
82 vst1.8 {q0, q1}, [r0, :128], r1
87 function ff_vp9_copy16_neon, export=1
98 vst1.8 {q0}, [r0, :128], r1
99 vst1.8 {q1}, [r4, :128], r1
104 function ff_vp9_avg16_neon, export=1
109 vld1.8 {q2}, [r2], r3
110 vld1.8 {q0}, [r0, :128], r1
111 vld1.8 {q3}, [r2], r3
113 vld1.8 {q1}, [r0, :128], r1
116 vst1.8 {q0}, [lr, :128], r1
117 vst1.8 {q1}, [lr, :128], r1
122 function ff_vp9_copy8_neon, export=1
125 vld1.8 {d0}, [r2], r3
126 vld1.8 {d1}, [r2], r3
128 vst1.8 {d0}, [r0, :64], r1
129 vst1.8 {d1}, [r0, :64], r1
134 function ff_vp9_avg8_neon, export=1
137 vld1.8 {d2}, [r2], r3
138 vld1.8 {d0}, [r0, :64], r1
139 vld1.8 {d3}, [r2], r3
141 vld1.8 {d1}, [r0, :64]
145 vst1.8 {d0}, [r0, :64], r1
146 vst1.8 {d1}, [r0, :64], r1
151 function ff_vp9_copy4_neon, export=1
154 vld1.32 {d0[]}, [r2], r3
155 vld1.32 {d1[]}, [r2], r3
156 vst1.32 {d0[0]}, [r0, :32], r1
157 vld1.32 {d2[]}, [r2], r3
158 vst1.32 {d1[0]}, [r0, :32], r1
159 vld1.32 {d3[]}, [r2], r3
161 vst1.32 {d2[0]}, [r0, :32], r1
162 vst1.32 {d3[0]}, [r0, :32], r1
167 function ff_vp9_avg4_neon, export=1
172 vld1.32 {d4[]}, [r2], r3
173 vld1.32 {d0[]}, [r0, :32], r1
174 vld1.32 {d5[]}, [r2], r3
176 vld1.32 {d1[]}, [r0, :32], r1
177 vld1.32 {d6[]}, [r2], r3
179 vld1.32 {d2[]}, [r0, :32], r1
180 vld1.32 {d7[]}, [r2], r3
182 vld1.32 {d3[]}, [r0, :32], r1
184 vst1.32 {d0[0]}, [lr, :32], r1
186 vst1.32 {d1[0]}, [lr, :32], r1
187 vst1.32 {d2[0]}, [lr, :32], r1
188 vst1.32 {d3[0]}, [lr, :32], r1
193 @ Helper macros for vmul/vmla with a constant from either d0 or d1 depending on index
194 .macro vmul_lane dst, src, idx
196 vmul.s16 \dst, \src, d0[\idx]
198 vmul.s16 \dst, \src, d1[\idx - 4]
201 .macro vmla_lane dst, src, idx
203 vmla.s16 \dst, \src, d0[\idx]
205 vmla.s16 \dst, \src, d1[\idx - 4]
209 @ Extract a vector from src1-src2 and src4-src5 (src1-src3 and src4-src6
210 @ for size >= 16), and multiply-accumulate into dst1 and dst3 (or
211 @ dst1-dst2 and dst3-dst4 for size >= 16)
212 .macro extmla dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, offset, size
213 vext.8 q14, \src1, \src2, #(2*\offset)
214 vext.8 q15, \src4, \src5, #(2*\offset)
216 vmla_lane \dst1, q14, \offset
217 vext.8 q5, \src2, \src3, #(2*\offset)
218 vmla_lane \dst3, q15, \offset
219 vext.8 q6, \src5, \src6, #(2*\offset)
220 vmla_lane \dst2, q5, \offset
221 vmla_lane \dst4, q6, \offset
223 vmla_lane \dst1, q14, \offset
224 vmla_lane \dst3, q15, \offset
227 @ The same as above, but don't accumulate straight into the
228 @ destination, but use a temp register and accumulate with saturation.
229 .macro extmulqadd dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, offset, size
230 vext.8 q14, \src1, \src2, #(2*\offset)
231 vext.8 q15, \src4, \src5, #(2*\offset)
233 vmul_lane q14, q14, \offset
234 vext.8 q5, \src2, \src3, #(2*\offset)
235 vmul_lane q15, q15, \offset
236 vext.8 q6, \src5, \src6, #(2*\offset)
237 vmul_lane q5, q5, \offset
238 vmul_lane q6, q6, \offset
240 vmul_lane q14, q14, \offset
241 vmul_lane q15, q15, \offset
243 vqadd.s16 \dst1, \dst1, q14
244 vqadd.s16 \dst3, \dst3, q15
246 vqadd.s16 \dst2, \dst2, q5
247 vqadd.s16 \dst4, \dst4, q6
252 @ Instantiate a horizontal filter function for the given size.
253 @ This can work on 4, 8 or 16 pixels in parallel; for larger
254 @ widths it will do 16 pixels at a time and loop horizontally.
255 @ The actual width is passed in r5, the height in r4 and
256 @ the filter coefficients in r12. idx2 is the index of the largest
257 @ filter coefficient (3 or 4) and idx1 is the other one of them.
258 .macro do_8tap_h type, size, idx1, idx2
259 function \type\()_8tap_\size\()h_\idx1\idx2
265 @ Only size >= 16 loops horizontally and needs
270 @ size >= 16 loads two qwords and increments r2,
271 @ for size 4/8 it's enough with one qword and no
277 @ Load the filter vector
278 vld1.16 {q0}, [r12,:128]
285 vld1.8 {d18, d19, d20}, [r2]!
286 vld1.8 {d24, d25, d26}, [r7]!
301 @ Accumulate, adding idx2 last with a separate
302 @ saturating add. The positive filter coefficients
303 @ for all indices except idx2 must add up to less
304 @ than 127 for this not to overflow.
305 vmul.s16 q1, q8, d0[0]
306 vmul.s16 q3, q11, d0[0]
308 vmul.s16 q2, q9, d0[0]
309 vmul.s16 q4, q12, d0[0]
311 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, 1, \size
312 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, 2, \size
313 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, \idx1, \size
314 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, 5, \size
315 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, 6, \size
316 extmla q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, 7, \size
317 extmulqadd q1, q2, q3, q4, q8, q9, q10, q11, q12, q13, \idx2, \size
319 @ Round, shift and saturate
320 vqrshrun.s16 d2, q1, #7
321 vqrshrun.s16 d6, q3, #7
323 vqrshrun.s16 d3, q2, #7
324 vqrshrun.s16 d7, q4, #7
329 vld1.8 {q14}, [r0,:128]
330 vld1.8 {q15}, [r6,:128]
331 vrhadd.u8 q1, q1, q14
332 vrhadd.u8 q3, q3, q15
334 vld1.8 {d28}, [r0,:64]
335 vld1.8 {d30}, [r6,:64]
336 vrhadd.u8 d2, d2, d28
337 vrhadd.u8 d6, d6, d30
339 @ We only need d28[0], but [] is faster on some cores
340 vld1.32 {d28[]}, [r0,:32]
341 vld1.32 {d30[]}, [r6,:32]
342 vrhadd.u8 d2, d2, d28
343 vrhadd.u8 d6, d6, d30
346 @ Store and loop horizontally (for size >= 16)
349 vst1.8 {q1}, [r0,:128]!
350 vst1.8 {q3}, [r6,:128]!
362 vst1.8 {d2}, [r0,:64]
363 vst1.8 {d6}, [r6,:64]
365 vst1.32 {d2[0]}, [r0,:32]
366 vst1.32 {d6[0]}, [r6,:32]
384 .macro do_8tap_h_size size
385 do_8tap_h put, \size, 3, 4
386 do_8tap_h avg, \size, 3, 4
387 do_8tap_h put, \size, 4, 3
388 do_8tap_h avg, \size, 4, 3
395 .macro do_8tap_h_func type, filter, offset, size
396 function ff_vp9_\type\()_\filter\()\size\()_h_neon, export=1
406 movrelx r12, X(ff_vp9_subpel_filters), r6
407 add r12, r12, 256*\offset
409 add r12, r12, r5, lsl #4
412 bge \type\()_8tap_16h_34
413 b \type\()_8tap_16h_43
415 bge \type\()_8tap_\size\()h_34
416 b \type\()_8tap_\size\()h_43
421 .macro do_8tap_h_filters size
422 do_8tap_h_func put, regular, 1, \size
423 do_8tap_h_func avg, regular, 1, \size
424 do_8tap_h_func put, sharp, 2, \size
425 do_8tap_h_func avg, sharp, 2, \size
426 do_8tap_h_func put, smooth, 0, \size
427 do_8tap_h_func avg, smooth, 0, \size
440 @ Round, shift and saturate and store qreg1-2 over 4 lines
441 .macro do_store4 qreg1, dreg1, qreg2, dreg2, tmp1, tmp2, type
442 vqrshrun.s16 \dreg1, \qreg1, #7
443 vqrshrun.s16 \dreg2, \qreg2, #7
445 vld1.32 {\tmp1[]}, [r0,:32], r1
446 vld1.32 {\tmp2[]}, [r0,:32], r1
447 vld1.32 {\tmp1[1]}, [r0,:32], r1
448 vld1.32 {\tmp2[1]}, [r0,:32], r1
449 vrhadd.u8 \dreg1, \dreg1, \tmp1
450 vrhadd.u8 \dreg2, \dreg2, \tmp2
451 sub r0, r0, r1, lsl #2
453 vst1.32 {\dreg1[0]}, [r0,:32], r1
454 vst1.32 {\dreg2[0]}, [r0,:32], r1
455 vst1.32 {\dreg1[1]}, [r0,:32], r1
456 vst1.32 {\dreg2[1]}, [r0,:32], r1
459 @ Round, shift and saturate and store qreg1-4
460 .macro do_store qreg1, dreg1, qreg2, dreg2, qreg3, dreg3, qreg4, dreg4, tmp1, tmp2, tmp3, tmp4, type
461 vqrshrun.s16 \dreg1, \qreg1, #7
462 vqrshrun.s16 \dreg2, \qreg2, #7
463 vqrshrun.s16 \dreg3, \qreg3, #7
464 vqrshrun.s16 \dreg4, \qreg4, #7
466 vld1.8 {\tmp1}, [r0,:64], r1
467 vld1.8 {\tmp2}, [r0,:64], r1
468 vld1.8 {\tmp3}, [r0,:64], r1
469 vld1.8 {\tmp4}, [r0,:64], r1
470 vrhadd.u8 \dreg1, \dreg1, \tmp1
471 vrhadd.u8 \dreg2, \dreg2, \tmp2
472 vrhadd.u8 \dreg3, \dreg3, \tmp3
473 vrhadd.u8 \dreg4, \dreg4, \tmp4
474 sub r0, r0, r1, lsl #2
476 vst1.8 {\dreg1}, [r0,:64], r1
477 vst1.8 {\dreg2}, [r0,:64], r1
478 vst1.8 {\dreg3}, [r0,:64], r1
479 vst1.8 {\dreg4}, [r0,:64], r1
482 @ Evaluate the filter twice in parallel, from the inputs src1-src9 into dst1-dst2
483 @ (src1-src8 into dst1, src2-src9 into dst2), adding idx2 separately
484 @ at the end with saturation. Indices 0 and 7 always have negative or zero
485 @ coefficients, so they can be accumulated into tmp1-tmp2 together with the
486 @ largest coefficient.
487 .macro convolve dst1, dst2, src1, src2, src3, src4, src5, src6, src7, src8, src9, idx1, idx2, tmp1, tmp2
488 vmul.s16 \dst1, \src2, d0[1]
489 vmul.s16 \dst2, \src3, d0[1]
490 vmul.s16 \tmp1, \src1, d0[0]
491 vmul.s16 \tmp2, \src2, d0[0]
492 vmla.s16 \dst1, \src3, d0[2]
493 vmla.s16 \dst2, \src4, d0[2]
495 vmla.s16 \dst1, \src4, d0[3]
496 vmla.s16 \dst2, \src5, d0[3]
498 vmla.s16 \dst1, \src5, d1[0]
499 vmla.s16 \dst2, \src6, d1[0]
501 vmla.s16 \dst1, \src6, d1[1]
502 vmla.s16 \dst2, \src7, d1[1]
503 vmla.s16 \tmp1, \src8, d1[3]
504 vmla.s16 \tmp2, \src9, d1[3]
505 vmla.s16 \dst1, \src7, d1[2]
506 vmla.s16 \dst2, \src8, d1[2]
508 vmla.s16 \tmp1, \src4, d0[3]
509 vmla.s16 \tmp2, \src5, d0[3]
511 vmla.s16 \tmp1, \src5, d1[0]
512 vmla.s16 \tmp2, \src6, d1[0]
514 vqadd.s16 \dst1, \dst1, \tmp1
515 vqadd.s16 \dst2, \dst2, \tmp2
518 @ Load pixels and extend them to 16 bit
519 .macro loadl dst1, dst2, dst3, dst4
520 vld1.8 {d2}, [r2], r3
521 vld1.8 {d3}, [r2], r3
522 vld1.8 {d4}, [r2], r3
524 vld1.8 {d5}, [r2], r3
534 @ Instantiate a vertical filter function for filtering 8 pixels at a time.
535 @ The height is passed in r4, the width in r5 and the filter coefficients
536 @ in r12. idx2 is the index of the largest filter coefficient (3 or 4)
537 @ and idx1 is the other one of them.
538 .macro do_8tap_8v type, idx1, idx2
539 function \type\()_8tap_8v_\idx1\idx2
540 sub r2, r2, r3, lsl #1
542 vld1.16 {q0}, [r12, :128]
547 loadl q8, q9, q10, q11
549 loadl q12, q13, q14, q15
550 convolve q1, q2, q5, q6, q7, q8, q9, q10, q11, q12, q13, \idx1, \idx2, q4, q5
551 convolve q3, q4, q7, q8, q9, q10, q11, q12, q13, q14, q15, \idx1, \idx2, q5, q6
552 do_store q1, d2, q2, d4, q3, d6, q4, d8, d3, d5, d7, d9, \type
558 convolve q1, q2, q9, q10, q11, q12, q13, q14, q15, q4, q5, \idx1, \idx2, q8, q9
559 convolve q3, q8, q11, q12, q13, q14, q15, q4, q5, q6, q7, \idx1, \idx2, q9, q10
560 do_store q1, d2, q2, d4, q3, d6, q8, d16, d3, d5, d7, d17, \type
565 loadl q8, q9, q10, q11
566 convolve q1, q2, q13, q14, q15, q4, q5, q6, q7, q8, q9, \idx1, \idx2, q12, q13
567 convolve q3, q12, q15, q4, q5, q6, q7, q8, q9, q10, q11, \idx1, \idx2, q13, q14
568 do_store q1, d2, q2, d4, q3, d6, q12, d24, d3, d5, d7, d25, \type
576 @ r0 -= h * dst_stride
578 @ r2 -= h * src_stride
580 @ r2 -= 8 * src_stride
581 sub r2, r2, r3, lsl #3
582 @ r2 += 1 * src_stride
599 @ Instantiate a vertical filter function for filtering a 4 pixels wide
600 @ slice. The first half of the registers contain one row, while the second
601 @ half of a register contains the second-next row (also stored in the first
602 @ half of the register two steps ahead). The convolution does two outputs
603 @ at a time; the output of q5-q12 into one, and q4-q13 into another one.
604 @ The first half of first output is the first output row, the first half
605 @ of the other output is the second output row. The second halves of the
606 @ registers are rows 3 and 4.
607 @ This only is designed to work for 4 or 8 output lines.
608 .macro do_8tap_4v type, idx1, idx2
609 function \type\()_8tap_4v_\idx1\idx2
610 sub r2, r2, r3, lsl #1
612 vld1.16 {q0}, [r12, :128]
614 vld1.32 {d2[]}, [r2], r3
615 vld1.32 {d3[]}, [r2], r3
616 vld1.32 {d4[]}, [r2], r3
617 vld1.32 {d5[]}, [r2], r3
618 vld1.32 {d6[]}, [r2], r3
619 vld1.32 {d7[]}, [r2], r3
620 vext.8 d2, d2, d4, #4
621 vld1.32 {d8[]}, [r2], r3
622 vext.8 d3, d3, d5, #4
623 vld1.32 {d9[]}, [r2], r3
625 vext.8 d4, d4, d6, #4
626 vld1.32 {d28[]}, [r2], r3
628 vext.8 d5, d5, d7, #4
629 vld1.32 {d29[]}, [r2], r3
631 vext.8 d6, d6, d8, #4
632 vld1.32 {d30[]}, [r2], r3
634 vext.8 d7, d7, d9, #4
636 vext.8 d8, d8, d28, #4
638 vext.8 d9, d9, d29, #4
640 vext.8 d28, d28, d30, #4
644 convolve q1, q2, q5, q6, q7, q8, q9, q10, q11, q12, q13, \idx1, \idx2, q4, q3
645 do_store4 q1, d2, q2, d4, d3, d5, \type
649 vld1.32 {d2[]}, [r2], r3
650 vld1.32 {d3[]}, [r2], r3
651 vext.8 d29, d29, d2, #4
652 vext.8 d30, d30, d3, #4
653 vld1.32 {d2[1]}, [r2], r3
655 vld1.32 {d3[1]}, [r2], r3
660 convolve q1, q2, q9, q10, q11, q12, q13, q14, q15, q5, q6, \idx1, \idx2, q4, q3
661 do_store4 q1, d2, q2, d4, d3, d5, \type
675 .macro do_8tap_v_func type, filter, offset, size
676 function ff_vp9_\type\()_\filter\()\size\()_v_neon, export=1
680 movrelx r12, X(ff_vp9_subpel_filters), r5
682 add r12, r12, 256*\offset
683 add r12, r12, r5, lsl #4
687 bge \type\()_8tap_8v_34
688 b \type\()_8tap_8v_43
690 bge \type\()_8tap_4v_34
691 b \type\()_8tap_4v_43
696 .macro do_8tap_v_filters size
697 do_8tap_v_func put, regular, 1, \size
698 do_8tap_v_func avg, regular, 1, \size
699 do_8tap_v_func put, sharp, 2, \size
700 do_8tap_v_func avg, sharp, 2, \size
701 do_8tap_v_func put, smooth, 0, \size
702 do_8tap_v_func avg, smooth, 0, \size