2 * Copyright (c) 2016 Google Inc.
4 * This file is part of Libav.
6 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/aarch64/asm.S"
24 const itxfm4_coeffs, align=4
25 .short 11585, 6270, 15137, 0
27 .short 5283, 15212, 9929, 13377
30 const iadst8_coeffs, align=4
31 .short 16305, 1606, 14449, 7723, 10394, 12665, 4756, 15679
33 .short 11585, 6270, 15137, 3196, 16069, 13623, 9102, 1606
34 .short 16305, 12665, 10394, 7723, 14449, 15679, 4756, 0
35 .short 804, 16364, 12140, 11003, 7005, 14811, 15426, 5520
36 .short 3981, 15893, 14053, 8423, 9760, 13160, 16207, 2404
39 const iadst16_coeffs, align=4
40 .short 16364, 804, 15893, 3981, 14811, 7005, 13160, 9760
41 .short 11003, 12140, 8423, 14053, 5520, 15426, 2404, 16207
44 // out1 = ((in1 + in2) * v0[0] + (1 << 13)) >> 14
45 // out2 = ((in1 - in2) * v0[0] + (1 << 13)) >> 14
46 // in/out are .8h registers; this can do with 4 temp registers, but is
47 // more efficient if 6 temp registers are available.
48 .macro dmbutterfly0 out1, out2, in1, in2, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, neg=0
50 neg \tmp4\().4h, v0.4h
52 add \tmp1\().8h, \in1\().8h, \in2\().8h
53 sub \tmp2\().8h, \in1\().8h, \in2\().8h
55 smull \tmp3\().4s, \tmp1\().4h, \tmp4\().h[0]
56 smull2 \tmp4\().4s, \tmp1\().8h, \tmp4\().h[0]
58 smull \tmp3\().4s, \tmp1\().4h, v0.h[0]
59 smull2 \tmp4\().4s, \tmp1\().8h, v0.h[0]
62 rshrn \out1\().4h, \tmp3\().4s, #14
63 rshrn2 \out1\().8h, \tmp4\().4s, #14
64 smull \tmp3\().4s, \tmp2\().4h, v0.h[0]
65 smull2 \tmp4\().4s, \tmp2\().8h, v0.h[0]
66 rshrn \out2\().4h, \tmp3\().4s, #14
67 rshrn2 \out2\().8h, \tmp4\().4s, #14
69 smull \tmp5\().4s, \tmp2\().4h, v0.h[0]
70 smull2 \tmp6\().4s, \tmp2\().8h, v0.h[0]
71 rshrn \out1\().4h, \tmp3\().4s, #14
72 rshrn2 \out1\().8h, \tmp4\().4s, #14
73 rshrn \out2\().4h, \tmp5\().4s, #14
74 rshrn2 \out2\().8h, \tmp6\().4s, #14
78 // Same as dmbutterfly0 above, but treating the input in in2 as zero,
79 // writing the same output into both out1 and out2.
80 .macro dmbutterfly0_h out1, out2, in1, in2, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6
81 smull \tmp1\().4s, \in1\().4h, v0.h[0]
82 smull2 \tmp2\().4s, \in1\().8h, v0.h[0]
83 rshrn \out1\().4h, \tmp1\().4s, #14
84 rshrn2 \out1\().8h, \tmp2\().4s, #14
85 rshrn \out2\().4h, \tmp1\().4s, #14
86 rshrn2 \out2\().8h, \tmp2\().4s, #14
89 // out1,out2 = in1 * coef1 - in2 * coef2
90 // out3,out4 = in1 * coef2 + in2 * coef1
91 // out are 4 x .4s registers, in are 2 x .8h registers
92 .macro dmbutterfly_l out1, out2, out3, out4, in1, in2, coef1, coef2
93 smull \out1\().4s, \in1\().4h, \coef1
94 smull2 \out2\().4s, \in1\().8h, \coef1
95 smull \out3\().4s, \in1\().4h, \coef2
96 smull2 \out4\().4s, \in1\().8h, \coef2
97 smlsl \out1\().4s, \in2\().4h, \coef2
98 smlsl2 \out2\().4s, \in2\().8h, \coef2
99 smlal \out3\().4s, \in2\().4h, \coef1
100 smlal2 \out4\().4s, \in2\().8h, \coef1
103 // inout1 = (inout1 * coef1 - inout2 * coef2 + (1 << 13)) >> 14
104 // inout2 = (inout1 * coef2 + inout2 * coef1 + (1 << 13)) >> 14
105 // inout are 2 x .8h registers
106 .macro dmbutterfly inout1, inout2, coef1, coef2, tmp1, tmp2, tmp3, tmp4, neg=0
107 dmbutterfly_l \tmp1, \tmp2, \tmp3, \tmp4, \inout1, \inout2, \coef1, \coef2
109 neg \tmp3\().4s, \tmp3\().4s
110 neg \tmp4\().4s, \tmp4\().4s
112 rshrn \inout1\().4h, \tmp1\().4s, #14
113 rshrn2 \inout1\().8h, \tmp2\().4s, #14
114 rshrn \inout2\().4h, \tmp3\().4s, #14
115 rshrn2 \inout2\().8h, \tmp4\().4s, #14
118 // Same as dmbutterfly above, but treating the input in inout2 as zero
119 .macro dmbutterfly_h1 inout1, inout2, coef1, coef2, tmp1, tmp2, tmp3, tmp4
120 smull \tmp1\().4s, \inout1\().4h, \coef1
121 smull2 \tmp2\().4s, \inout1\().8h, \coef1
122 smull \tmp3\().4s, \inout1\().4h, \coef2
123 smull2 \tmp4\().4s, \inout1\().8h, \coef2
124 rshrn \inout1\().4h, \tmp1\().4s, #14
125 rshrn2 \inout1\().8h, \tmp2\().4s, #14
126 rshrn \inout2\().4h, \tmp3\().4s, #14
127 rshrn2 \inout2\().8h, \tmp4\().4s, #14
130 // Same as dmbutterfly above, but treating the input in inout1 as zero
131 .macro dmbutterfly_h2 inout1, inout2, coef1, coef2, tmp1, tmp2, tmp3, tmp4
132 smull \tmp1\().4s, \inout2\().4h, \coef2
133 smull2 \tmp2\().4s, \inout2\().8h, \coef2
134 smull \tmp3\().4s, \inout2\().4h, \coef1
135 smull2 \tmp4\().4s, \inout2\().8h, \coef1
136 neg \tmp1\().4s, \tmp1\().4s
137 neg \tmp2\().4s, \tmp2\().4s
138 rshrn \inout2\().4h, \tmp3\().4s, #14
139 rshrn2 \inout2\().8h, \tmp4\().4s, #14
140 rshrn \inout1\().4h, \tmp1\().4s, #14
141 rshrn2 \inout1\().8h, \tmp2\().4s, #14
144 .macro dsmull_h out1, out2, in, coef
145 smull \out1\().4s, \in\().4h, \coef
146 smull2 \out2\().4s, \in\().8h, \coef
149 .macro drshrn_h out, in1, in2, shift
150 rshrn \out\().4h, \in1\().4s, \shift
151 rshrn2 \out\().8h, \in2\().4s, \shift
157 .macro butterfly_8h out1, out2, in1, in2
158 add \out1\().8h, \in1\().8h, \in2\().8h
159 sub \out2\().8h, \in1\().8h, \in2\().8h
164 .macro butterfly_8h_r out1, out2, in1, in2
165 sub \out1\().8h, \in1\().8h, \in2\().8h
166 add \out2\().8h, \in1\().8h, \in2\().8h
169 // out1 = (in1,in2 + in3,in4 + (1 << 13)) >> 14
170 // out2 = (in1,in2 - in3,in4 + (1 << 13)) >> 14
171 // out are 2 x .8h registers, in are 4 x .4s registers
172 .macro dbutterfly_n out1, out2, in1, in2, in3, in4, tmp1, tmp2, tmp3, tmp4
173 add \tmp1\().4s, \in1\().4s, \in3\().4s
174 add \tmp2\().4s, \in2\().4s, \in4\().4s
175 sub \tmp3\().4s, \in1\().4s, \in3\().4s
176 sub \tmp4\().4s, \in2\().4s, \in4\().4s
177 rshrn \out1\().4h, \tmp1\().4s, #14
178 rshrn2 \out1\().8h, \tmp2\().4s, #14
179 rshrn \out2\().4h, \tmp3\().4s, #14
180 rshrn2 \out2\().8h, \tmp4\().4s, #14
183 .macro iwht4 c0, c1, c2, c3
184 add \c0\().4h, \c0\().4h, \c1\().4h
185 sub v17.4h, \c2\().4h, \c3\().4h
186 sub v16.4h, \c0\().4h, v17.4h
187 sshr v16.4h, v16.4h, #1
188 sub \c2\().4h, v16.4h, \c1\().4h
189 sub \c1\().4h, v16.4h, \c3\().4h
190 add \c3\().4h, v17.4h, \c2\().4h
191 sub \c0\().4h, \c0\().4h, \c1\().4h
194 .macro idct4 c0, c1, c2, c3
195 smull v22.4s, \c1\().4h, v0.h[2]
196 smull v20.4s, \c1\().4h, v0.h[1]
197 add v16.4h, \c0\().4h, \c2\().4h
198 sub v17.4h, \c0\().4h, \c2\().4h
199 smlal v22.4s, \c3\().4h, v0.h[1]
200 smull v18.4s, v16.4h, v0.h[0]
201 smull v19.4s, v17.4h, v0.h[0]
202 smlsl v20.4s, \c3\().4h, v0.h[2]
203 rshrn v22.4h, v22.4s, #14
204 rshrn v18.4h, v18.4s, #14
205 rshrn v19.4h, v19.4s, #14
206 rshrn v20.4h, v20.4s, #14
207 add \c0\().4h, v18.4h, v22.4h
208 sub \c3\().4h, v18.4h, v22.4h
209 add \c1\().4h, v19.4h, v20.4h
210 sub \c2\().4h, v19.4h, v20.4h
213 .macro iadst4 c0, c1, c2, c3
214 smull v16.4s, \c0\().4h, v0.h[4]
215 smlal v16.4s, \c2\().4h, v0.h[5]
216 smlal v16.4s, \c3\().4h, v0.h[6]
217 smull v17.4s, \c0\().4h, v0.h[6]
218 smlsl v17.4s, \c2\().4h, v0.h[4]
219 sub \c0\().4h, \c0\().4h, \c2\().4h
220 smlsl v17.4s, \c3\().4h, v0.h[5]
221 add \c0\().4h, \c0\().4h, \c3\().4h
222 smull v19.4s, \c1\().4h, v0.h[7]
223 smull v18.4s, \c0\().4h, v0.h[7]
224 add v20.4s, v16.4s, v19.4s
225 add v21.4s, v17.4s, v19.4s
226 rshrn \c0\().4h, v20.4s, #14
227 add v16.4s, v16.4s, v17.4s
228 rshrn \c1\().4h, v21.4s, #14
229 sub v16.4s, v16.4s, v19.4s
230 rshrn \c2\().4h, v18.4s, #14
231 rshrn \c3\().4h, v16.4s, #14
234 // The public functions in this file have got the following signature:
235 // void itxfm_add(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob);
237 .macro itxfm_func4x4 txfm1, txfm2
238 function ff_vp9_\txfm1\()_\txfm2\()_4x4_add_neon, export=1
241 movrel x4, itxfm4_coeffs
245 movrel x4, iadst4_coeffs
249 movrel x4, itxfm4_coeffs
254 .ifc \txfm1\()_\txfm2,idct_idct
257 // DC-only for idct/idct
259 smull v2.4s, v2.4h, v0.h[0]
260 rshrn v2.4h, v2.4s, #14
261 smull v2.4s, v2.4h, v0.h[0]
262 rshrn v2.4h, v2.4s, #14
272 ld1 {v4.4h,v5.4h,v6.4h,v7.4h}, [x2]
273 st1 {v31.8h}, [x2], #16
276 sshr v4.4h, v4.4h, #2
277 sshr v5.4h, v5.4h, #2
278 sshr v6.4h, v6.4h, #2
279 sshr v7.4h, v7.4h, #2
282 \txfm1\()4 v4, v5, v6, v7
284 st1 {v31.8h}, [x2], #16
285 // Transpose 4x4 with 16 bit elements
286 transpose_4x4H v4, v5, v6, v7, v16, v17, v18, v19
288 \txfm2\()4 v4, v5, v6, v7
290 ld1 {v0.s}[0], [x0], x1
291 ld1 {v1.s}[0], [x0], x1
293 srshr v4.4h, v4.4h, #4
294 srshr v5.4h, v5.4h, #4
295 srshr v6.4h, v6.4h, #4
296 srshr v7.4h, v7.4h, #4
298 uaddw v4.8h, v4.8h, v0.8b
299 uaddw v5.8h, v5.8h, v1.8b
300 ld1 {v2.s}[0], [x0], x1
301 ld1 {v3.s}[0], [x0], x1
304 sub x0, x0, x1, lsl #2
306 uaddw v6.8h, v6.8h, v2.8b
307 uaddw v7.8h, v7.8h, v3.8b
308 st1 {v0.s}[0], [x0], x1
312 st1 {v1.s}[0], [x0], x1
313 st1 {v2.s}[0], [x0], x1
314 st1 {v3.s}[0], [x0], x1
320 itxfm_func4x4 idct, idct
321 itxfm_func4x4 iadst, idct
322 itxfm_func4x4 idct, iadst
323 itxfm_func4x4 iadst, iadst
324 itxfm_func4x4 iwht, iwht
328 dmbutterfly0 v16, v20, v16, v20, v2, v3, v4, v5, v6, v7 // v16 = t0a, v20 = t1a
329 dmbutterfly v18, v22, v0.h[1], v0.h[2], v2, v3, v4, v5 // v18 = t2a, v22 = t3a
330 dmbutterfly v17, v23, v0.h[3], v0.h[4], v2, v3, v4, v5 // v17 = t4a, v23 = t7a
331 dmbutterfly v21, v19, v0.h[5], v0.h[6], v2, v3, v4, v5 // v21 = t5a, v19 = t6a
333 butterfly_8h v24, v25, v16, v22 // v24 = t0, v25 = t3
334 butterfly_8h v28, v29, v17, v21 // v28 = t4, v29 = t5a
335 butterfly_8h v30, v31, v23, v19 // v30 = t7, v31 = t6a
336 butterfly_8h v26, v27, v20, v18 // v26 = t1, v27 = t2
338 dmbutterfly0 v31, v29, v31, v29, v2, v3, v4, v5, v6, v7 // v31 = t6, v29 = t5
340 butterfly_8h v16, v23, v24, v30 // v16 = out[0], v23 = out[7]
341 butterfly_8h v17, v22, v26, v31 // v17 = out[1], v22 = out[6]
342 butterfly_8h v18, v21, v27, v29 // q13 = out[2], q10 = out[5]
343 butterfly_8h v19, v20, v25, v28 // v17 = out[3], q12 = out[4]
347 dmbutterfly_l v24, v25, v26, v27, v23, v16, v1.h[1], v1.h[0] // v24,v25 = t1a, v26,v27 = t0a
348 dmbutterfly_l v28, v29, v30, v31, v21, v18, v1.h[3], v1.h[2] // v28,v29 = t3a, v30,v31 = t2a
349 dmbutterfly_l v2, v3, v4, v5, v19, v20, v1.h[5], v1.h[4] // v2,v3 = t5a, v4,v5 = t4a
350 dmbutterfly_l v16, v18, v21, v23, v17, v22, v1.h[7], v1.h[6] // v16,v18 = t7a, v21,v23 = t6a
352 dbutterfly_n v4, v5, v26, v27, v4, v5, v6, v7, v26, v27 // v4 = t0, v5 = t4
353 dbutterfly_n v2, v3, v24, v25, v2, v3, v6, v7, v26, v27 // v2 = t1, v3 = t5
354 dbutterfly_n v24, v25, v30, v31, v21, v23, v6, v7, v26, v27 // v24 = t2, v25 = t6
355 dbutterfly_n v30, v31, v28, v29, v16, v18, v6, v7, v26, v27 // v30 = t3, v31 = t7
357 butterfly_8h v16, v6, v4, v24 // v16 = out[0], v6 = t2
358 butterfly_8h v23, v7, v2, v30 // v23 = -out[7], v7 = t3
359 neg v23.8h, v23.8h // v23 = out[7]
361 dmbutterfly0 v19, v20, v6, v7, v24, v26, v27, v28, v29, v30 // v19 = -out[3], v20 = out[4]
362 neg v19.8h, v19.8h // v19 = out[3]
364 dmbutterfly_l v26, v27, v28, v29, v5, v3, v0.h[1], v0.h[2] // v26,v27 = t5a, v28,v29 = t4a
365 dmbutterfly_l v2, v3, v4, v5, v31, v25, v0.h[2], v0.h[1] // v2,v3 = t6a, v4,v5 = t7a
367 dbutterfly_n v17, v30, v28, v29, v2, v3, v6, v7, v24, v25 // v17 = -out[1], v30 = t6
368 dbutterfly_n v22, v31, v26, v27, v4, v5, v6, v7, v24, v25 // v22 = out[6], v31 = t7
369 neg v17.8h, v17.8h // v17 = out[1]
371 dmbutterfly0 v18, v21, v30, v31, v2, v3, v4, v5, v6, v7 // v18 = out[2], v21 = -out[5]
372 neg v21.8h, v21.8h // v21 = out[5]
376 .macro itxfm_func8x8 txfm1, txfm2
377 function ff_vp9_\txfm1\()_\txfm2\()_8x8_add_neon, export=1
378 // The iadst also uses a few coefficients from
379 // idct, so those always need to be loaded.
380 .ifc \txfm1\()_\txfm2,idct_idct
381 movrel x4, idct_coeffs
383 movrel x4, iadst8_coeffs
384 ld1 {v1.8h}, [x4], #16
393 .ifc \txfm1\()_\txfm2,idct_idct
396 // DC-only for idct/idct
398 smull v2.4s, v2.4h, v0.h[0]
399 rshrn v2.4h, v2.4s, #14
400 smull v2.4s, v2.4h, v0.h[0]
401 rshrn v2.4h, v2.4s, #14
414 ld1 {v16.8h,v17.8h,v18.8h,v19.8h}, [x2], #64
415 ld1 {v20.8h,v21.8h,v22.8h,v23.8h}, [x2], #64
417 st1 {v2.8h,v3.8h,v4.8h,v5.8h}, [x2], #64
418 st1 {v2.8h,v3.8h,v4.8h,v5.8h}, [x2], #64
422 // Transpose 8x8 with 16 bit elements
423 transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v24, v25
428 // Add into the destination
429 ld1 {v0.8b}, [x0], x1
430 srshr v16.8h, v16.8h, #5
431 ld1 {v1.8b}, [x0], x1
432 srshr v17.8h, v17.8h, #5
433 ld1 {v2.8b}, [x0], x1
434 srshr v18.8h, v18.8h, #5
435 uaddw v16.8h, v16.8h, v0.8b
436 ld1 {v3.8b}, [x0], x1
437 srshr v19.8h, v19.8h, #5
438 uaddw v17.8h, v17.8h, v1.8b
439 ld1 {v4.8b}, [x0], x1
440 srshr v20.8h, v20.8h, #5
441 uaddw v18.8h, v18.8h, v2.8b
443 ld1 {v5.8b}, [x0], x1
444 srshr v21.8h, v21.8h, #5
445 uaddw v19.8h, v19.8h, v3.8b
447 ld1 {v6.8b}, [x0], x1
448 srshr v22.8h, v22.8h, #5
449 uaddw v20.8h, v20.8h, v4.8b
451 ld1 {v7.8b}, [x0], x1
452 srshr v23.8h, v23.8h, #5
453 uaddw v21.8h, v21.8h, v5.8b
456 st1 {v0.8b}, [x3], x1
457 uaddw v22.8h, v22.8h, v6.8b
458 st1 {v1.8b}, [x3], x1
460 st1 {v2.8b}, [x3], x1
461 uaddw v23.8h, v23.8h, v7.8b
462 st1 {v3.8b}, [x3], x1
464 st1 {v4.8b}, [x3], x1
466 st1 {v5.8b}, [x3], x1
469 st1 {v6.8b}, [x3], x1
470 st1 {v7.8b}, [x3], x1
476 itxfm_func8x8 idct, idct
477 itxfm_func8x8 iadst, idct
478 itxfm_func8x8 idct, iadst
479 itxfm_func8x8 iadst, iadst
482 function idct16x16_dc_add_neon
483 movrel x4, idct_coeffs
489 smull v2.4s, v2.4h, v0.h[0]
490 rshrn v2.4h, v2.4s, #14
491 smull v2.4s, v2.4h, v0.h[0]
492 rshrn v2.4h, v2.4s, #14
496 srshr v2.8h, v2.8h, #6
500 // Loop to add the constant from v2 into all 16x16 outputs
502 uaddw v4.8h, v2.8h, v3.8b
503 uaddw2 v5.8h, v2.8h, v3.16b
505 sqxtun2 v4.16b, v5.8h
506 st1 {v4.16b}, [x0], x1
514 butterfly_8h v18, v7, v4, v7 // v18 = t0a, v7 = t7a
515 butterfly_8h v19, v22, v5, v22 // v19 = t1a, v22 = t6
516 butterfly_8h v4, v26, v20, v26 // v4 = t2a, v26 = t5
517 butterfly_8h v5, v6, v28, v6 // v5 = t3a, v6 = t4
518 butterfly_8h v20, v28, v16, v24 // v20 = t8a, v28 = t11a
519 butterfly_8h v24, v21, v23, v21 // v24 = t9, v21 = t10
520 butterfly_8h v23, v27, v25, v27 // v23 = t14, v27 = t13
521 butterfly_8h v25, v29, v29, v17 // v25 = t15a, v29 = t12a
523 dmbutterfly0 v2, v3, v27, v21, v2, v3, v16, v17, v30, v31 // v2 = t13a, v3 = t10a
524 dmbutterfly0 v28, v27, v29, v28, v21, v29, v16, v17, v30, v31 // v28 = t12, v27 = t11
526 butterfly_8h v16, v31, v18, v25 // v16 = out[0], v31 = out[15]
527 butterfly_8h v17, v30, v19, v23 // v17 = out[1], v30 = out[14]
528 butterfly_8h_r v25, v22, v22, v24 // v25 = out[9], v22 = out[6]
529 butterfly_8h v23, v24, v7, v20 // v23 = out[7], v24 = out[8]
530 butterfly_8h v18, v29, v4, v2 // v18 = out[2], v29 = out[13]
531 butterfly_8h v19, v28, v5, v28 // v19 = out[3], v28 = out[12]
532 butterfly_8h v20, v27, v6, v27 // v20 = out[4], v27 = out[11]
533 butterfly_8h v21, v26, v26, v3 // v21 = out[5], v26 = out[10]
538 dmbutterfly0 v16, v24, v16, v24, v2, v3, v4, v5, v6, v7 // v16 = t0a, v24 = t1a
539 dmbutterfly v20, v28, v0.h[1], v0.h[2], v2, v3, v4, v5 // v20 = t2a, v28 = t3a
540 dmbutterfly v18, v30, v0.h[3], v0.h[4], v2, v3, v4, v5 // v18 = t4a, v30 = t7a
541 dmbutterfly v26, v22, v0.h[5], v0.h[6], v2, v3, v4, v5 // v26 = t5a, v22 = t6a
542 dmbutterfly v17, v31, v0.h[7], v1.h[0], v2, v3, v4, v5 // v17 = t8a, v31 = t15a
543 dmbutterfly v25, v23, v1.h[1], v1.h[2], v2, v3, v4, v5 // v25 = t9a, v23 = t14a
544 dmbutterfly v21, v27, v1.h[3], v1.h[4], v2, v3, v4, v5 // v21 = t10a, v27 = t13a
545 dmbutterfly v29, v19, v1.h[5], v1.h[6], v2, v3, v4, v5 // v29 = t11a, v19 = t12a
547 butterfly_8h v4, v28, v16, v28 // v4 = t0, v28 = t3
548 butterfly_8h v5, v20, v24, v20 // v5 = t1, v20 = t2
549 butterfly_8h v6, v26, v18, v26 // v6 = t4, v26 = t5
550 butterfly_8h v7, v22, v30, v22 // v7 = t7, v22 = t6
551 butterfly_8h v16, v25, v17, v25 // v16 = t8, v25 = t9
552 butterfly_8h v24, v21, v29, v21 // v24 = t11, v21 = t10
553 butterfly_8h v17, v27, v19, v27 // v17 = t12, v27 = t13
554 butterfly_8h v29, v23, v31, v23 // v29 = t15, v23 = t14
556 dmbutterfly0 v22, v26, v22, v26, v2, v3, v18, v19, v30, v31 // v22 = t6a, v26 = t5a
557 dmbutterfly v23, v25, v0.h[1], v0.h[2], v18, v19, v30, v31 // v23 = t9a, v25 = t14a
558 dmbutterfly v27, v21, v0.h[1], v0.h[2], v18, v19, v30, v31, neg=1 // v27 = t13a, v21 = t10a
563 dmbutterfly0_h v16, v24, v16, v24, v2, v3, v4, v5, v6, v7 // v16 = t0a, v24 = t1a
564 dmbutterfly_h1 v20, v28, v0.h[1], v0.h[2], v2, v3, v4, v5 // v20 = t2a, v28 = t3a
565 dmbutterfly_h1 v18, v30, v0.h[3], v0.h[4], v2, v3, v4, v5 // v18 = t4a, v30 = t7a
566 dmbutterfly_h2 v26, v22, v0.h[5], v0.h[6], v2, v3, v4, v5 // v26 = t5a, v22 = t6a
567 dmbutterfly_h1 v17, v31, v0.h[7], v1.h[0], v2, v3, v4, v5 // v17 = t8a, v31 = t15a
568 dmbutterfly_h2 v25, v23, v1.h[1], v1.h[2], v2, v3, v4, v5 // v25 = t9a, v23 = t14a
569 dmbutterfly_h1 v21, v27, v1.h[3], v1.h[4], v2, v3, v4, v5 // v21 = t10a, v27 = t13a
570 dmbutterfly_h2 v29, v19, v1.h[5], v1.h[6], v2, v3, v4, v5 // v29 = t11a, v19 = t12a
572 butterfly_8h v4, v28, v16, v28 // v4 = t0, v28 = t3
573 butterfly_8h v5, v20, v24, v20 // v5 = t1, v20 = t2
574 butterfly_8h v6, v26, v18, v26 // v6 = t4, v26 = t5
575 butterfly_8h v7, v22, v30, v22 // v7 = t7, v22 = t6
576 butterfly_8h v16, v25, v17, v25 // v16 = t8, v25 = t9
577 butterfly_8h v24, v21, v29, v21 // v24 = t11, v21 = t10
578 butterfly_8h v17, v27, v19, v27 // v17 = t12, v27 = t13
579 butterfly_8h v29, v23, v31, v23 // v29 = t15, v23 = t14
581 dmbutterfly0 v22, v26, v22, v26, v2, v3, v18, v19, v30, v31 // v22 = t6a, v26 = t5a
582 dmbutterfly v23, v25, v0.h[1], v0.h[2], v18, v19, v30, v31 // v23 = t9a, v25 = t14a
583 dmbutterfly v27, v21, v0.h[1], v0.h[2], v18, v19, v30, v31, neg=1 // v27 = t13a, v21 = t10a
587 function idct16_quarter
588 dsmull_h v24, v25, v19, v1.h[6]
589 dsmull_h v4, v5, v17, v0.h[7]
590 dsmull_h v7, v6, v18, v0.h[4]
591 dsmull_h v30, v31, v18, v0.h[3]
594 dsmull_h v29, v28, v17, v1.h[0]
595 dsmull_h v26, v27, v19, v1.h[5]
596 dsmull_h v22, v23, v16, v0.h[0]
597 drshrn_h v24, v24, v25, #14
598 drshrn_h v16, v4, v5, #14
599 drshrn_h v7, v7, v6, #14
600 drshrn_h v6, v30, v31, #14
601 drshrn_h v29, v29, v28, #14
602 drshrn_h v17, v26, v27, #14
603 drshrn_h v28, v22, v23, #14
605 dmbutterfly_l v20, v21, v22, v23, v17, v24, v0.h[1], v0.h[2]
606 dmbutterfly_l v18, v19, v30, v31, v29, v16, v0.h[1], v0.h[2]
609 drshrn_h v27, v20, v21, #14
610 drshrn_h v21, v22, v23, #14
611 drshrn_h v23, v18, v19, #14
612 drshrn_h v25, v30, v31, #14
615 dmbutterfly0 v22, v26, v7, v6, v18, v19, v30, v31
621 ld1 {v0.8h,v1.8h}, [x11]
623 dmbutterfly_l v6, v7, v4, v5, v31, v16, v0.h[1], v0.h[0] // v6,v7 = t1, v4,v5 = t0
624 dmbutterfly_l v10, v11, v8, v9, v23, v24, v1.h[1], v1.h[0] // v10,v11 = t9, v8,v9 = t8
625 dbutterfly_n v31, v24, v6, v7, v10, v11, v12, v13, v10, v11 // v31 = t1a, v24 = t9a
626 dmbutterfly_l v14, v15, v12, v13, v29, v18, v0.h[3], v0.h[2] // v14,v15 = t3, v12,v13 = t2
627 dbutterfly_n v16, v23, v4, v5, v8, v9, v6, v7, v8, v9 // v16 = t0a, v23 = t8a
629 dmbutterfly_l v6, v7, v4, v5, v21, v26, v1.h[3], v1.h[2] // v6,v7 = t11, v4,v5 = t10
630 dbutterfly_n v29, v26, v14, v15, v6, v7, v8, v9, v6, v7 // v29 = t3a, v26 = t11a
631 dmbutterfly_l v10, v11, v8, v9, v27, v20, v0.h[5], v0.h[4] // v10,v11 = t5, v8,v9 = t4
632 dbutterfly_n v18, v21, v12, v13, v4, v5, v6, v7, v4, v5 // v18 = t2a, v21 = t10a
634 dmbutterfly_l v14, v15, v12, v13, v19, v28, v1.h[5], v1.h[4] // v14,v15 = t13, v12,v13 = t12
635 dbutterfly_n v20, v28, v10, v11, v14, v15, v4, v5, v14, v15 // v20 = t5a, v28 = t13a
636 dmbutterfly_l v6, v7, v4, v5, v25, v22, v0.h[7], v0.h[6] // v6,v7 = t7, v4,v5 = t6
637 dbutterfly_n v27, v19, v8, v9, v12, v13, v10, v11, v12, v13 // v27 = t4a, v19 = t12a
639 dmbutterfly_l v10, v11, v8, v9, v17, v30, v1.h[7], v1.h[6] // v10,v11 = t15, v8,v9 = t14
641 dbutterfly_n v22, v30, v6, v7, v10, v11, v12, v13, v10, v11 // v22 = t7a, v30 = t15a
642 dmbutterfly_l v14, v15, v12, v13, v23, v24, v0.h[3], v0.h[4] // v14,v15 = t9, v12,v13 = t8
643 dbutterfly_n v25, v17, v4, v5, v8, v9, v6, v7, v8, v9 // v25 = t6a, v17 = t14a
645 dmbutterfly_l v4, v5, v6, v7, v28, v19, v0.h[4], v0.h[3] // v4,v5 = t12, v6,v7 = t13
646 dbutterfly_n v23, v19, v12, v13, v4, v5, v8, v9, v4, v5 // v23 = t8a, v19 = t12a
647 dmbutterfly_l v10, v11, v8, v9, v21, v26, v0.h[5], v0.h[6] // v10,v11 = t11, v8,v9 = t10
648 butterfly_8h_r v4, v27, v16, v27 // v4 = t4, v27 = t0
649 dbutterfly_n v24, v28, v14, v15, v6, v7, v12, v13, v6, v7 // v24 = t9a, v28 = t13a
651 dmbutterfly_l v12, v13, v14, v15, v30, v17, v0.h[6], v0.h[5] // v12,v13 = t14, v14,v15 = t15
652 butterfly_8h_r v5, v20, v31, v20 // v5 = t5, v20 = t1
653 dbutterfly_n v21, v17, v8, v9, v12, v13, v6, v7, v12, v13 // v21 = t10a, v17 = t14a
654 dbutterfly_n v26, v30, v10, v11, v14, v15, v8, v9, v14, v15 // v26 = t11a, v30 = t15a
656 butterfly_8h_r v6, v25, v18, v25 // v6 = t6, v25 = t2
657 butterfly_8h_r v7, v22, v29, v22 // v7 = t7, v22 = t3
659 dmbutterfly_l v10, v11, v8, v9, v19, v28, v0.h[1], v0.h[2] // v10,v11 = t13, v8,v9 = t12
660 dmbutterfly_l v12, v13, v14, v15, v30, v17, v0.h[2], v0.h[1] // v12,v13 = t14, v14,v15 = t15
662 dbutterfly_n v18, v30, v8, v9, v12, v13, v16, v17, v12, v13 // v18 = out[2], v30 = t14a
663 dbutterfly_n v29, v17, v10, v11, v14, v15, v12, v13, v14, v15 // v29 = -out[13], v17 = t15a
664 neg v29.8h, v29.8h // v29 = out[13]
666 dmbutterfly_l v10, v11, v8, v9, v4, v5, v0.h[1], v0.h[2] // v10,v11 = t5a, v8,v9 = t4a
667 dmbutterfly_l v12, v13, v14, v15, v7, v6, v0.h[2], v0.h[1] // v12,v13 = t6a, v14,v15 = t7a
669 butterfly_8h v2, v6, v27, v25 // v2 = out[0], v6 = t2a
670 butterfly_8h v3, v7, v23, v21 // v3 =-out[1], v7 = t10
672 dbutterfly_n v19, v31, v8, v9, v12, v13, v4, v5, v8, v9 // v19 = -out[3], v31 = t6
673 neg v19.8h, v19.8h // v19 = out[3]
674 dbutterfly_n v28, v16, v10, v11, v14, v15, v4, v5, v10, v11 // v28 = out[12], v16 = t7
676 butterfly_8h v5, v8, v20, v22 // v5 =-out[15],v8 = t3a
677 butterfly_8h v4, v9, v24, v26 // v4 = out[14],v9 = t11
679 dmbutterfly0 v23, v24, v6, v8, v10, v11, v12, v13, v14, v15, 1 // v23 = out[7], v24 = out[8]
680 dmbutterfly0 v21, v26, v30, v17, v10, v11, v12, v13, v14, v15, 1 // v21 = out[5], v26 = out[10]
681 dmbutterfly0 v20, v27, v16, v31, v10, v11, v12, v13, v14, v15 // v20 = out[4], v27 = out[11]
682 dmbutterfly0 v22, v25, v9, v7, v10, v11, v12, v13, v14, v15 // v22 = out[6], v25 = out[9]
684 neg v31.8h, v5.8h // v31 = out[15]
685 neg v17.8h, v3.8h // v17 = out[1]
692 // Helper macros; we can't use these expressions directly within
693 // e.g. .irp due to the extra concatenation \(). Therefore wrap
694 // them in macros to allow using .irp below.
695 .macro load i, src, inc
696 ld1 {v\i\().8h}, [\src], \inc
698 .macro store i, dst, inc
699 st1 {v\i\().8h}, [\dst], \inc
701 .macro movi_v i, size, imm
702 movi v\i\()\size, \imm
704 .macro load_clear i, src, inc
705 ld1 {v\i\().8h}, [\src]
706 st1 {v2.8h}, [\src], \inc
709 .macro load_add_store coef0, coef1, coef2, coef3, coef4, coef5, coef6, coef7, tmp1, tmp2
710 srshr \coef0, \coef0, #6
711 ld1 {v2.8b}, [x0], x1
712 srshr \coef1, \coef1, #6
713 ld1 {v3.8b}, [x3], x1
714 srshr \coef2, \coef2, #6
715 ld1 {v4.8b}, [x0], x1
716 srshr \coef3, \coef3, #6
717 uaddw \coef0, \coef0, v2.8b
718 ld1 {v5.8b}, [x3], x1
719 uaddw \coef1, \coef1, v3.8b
720 srshr \coef4, \coef4, #6
721 ld1 {v6.8b}, [x0], x1
722 srshr \coef5, \coef5, #6
723 ld1 {v7.8b}, [x3], x1
725 srshr \coef6, \coef6, #6
727 srshr \coef7, \coef7, #6
728 uaddw \coef2, \coef2, v4.8b
729 ld1 {\tmp1}, [x0], x1
730 uaddw \coef3, \coef3, v5.8b
731 ld1 {\tmp2}, [x3], x1
733 sub x0, x0, x1, lsl #2
734 sub x3, x3, x1, lsl #2
736 uaddw \coef4, \coef4, v6.8b
737 st1 {v2.8b}, [x0], x1
738 uaddw \coef5, \coef5, v7.8b
739 st1 {v3.8b}, [x3], x1
741 st1 {v4.8b}, [x0], x1
743 st1 {v5.8b}, [x3], x1
744 uaddw \coef6, \coef6, \tmp1
745 st1 {v6.8b}, [x0], x1
746 uaddw \coef7, \coef7, \tmp2
747 st1 {v7.8b}, [x3], x1
750 st1 {\tmp1}, [x0], x1
751 st1 {\tmp2}, [x3], x1
754 // Read a vertical 8x16 slice out of a 16x16 matrix, do a transform on it,
755 // transpose into a horizontal 16x8 slice and store.
756 // x0 = dst (temp buffer)
760 .macro itxfm16_1d_funcs txfm
761 function \txfm\()16_1d_8x16_pass1_neon
765 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
766 load_clear \i, x2, x9
771 // Do two 8x8 transposes. Originally, v16-v31 contain the
772 // 16 rows. Afterwards, v16-v23 and v24-v31 contain the two
773 // transposed 8x8 blocks.
774 transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
775 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3
777 // Store the transposed 8x8 blocks horizontally.
780 .irp i, 16, 24, 17, 25, 18, 26, 19, 27, 20, 28, 21, 29, 22, 30, 23, 31
785 // Special case: For the last input column (x1 == 8),
786 // which would be stored as the last row in the temp buffer,
787 // don't store the first 8x8 block, but keep it in registers
788 // for the first slice of the second pass (where it is the
790 .irp i, 24, 25, 26, 27, 28, 29, 30, 31
805 // Read a vertical 8x16 slice out of a 16x16 matrix, do a transform on it,
806 // load the destination pixels (from a similar 8x16 slice), add and store back.
809 // x2 = src (temp buffer)
811 // x9 = temp buffer stride
812 function \txfm\()16_1d_8x16_pass2_neon
814 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
818 .irp i, 24, 25, 26, 27, 28, 29, 30, 31
827 load_add_store v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v16.8b, v17.8b
828 load_add_store v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h, v16.8b, v17.8b
834 itxfm16_1d_funcs idct
835 itxfm16_1d_funcs iadst
837 .macro itxfm_func16x16 txfm1, txfm2
838 function ff_vp9_\txfm1\()_\txfm2\()_16x16_add_neon, export=1
839 .ifc \txfm1\()_\txfm2,idct_idct
841 b.eq idct16x16_dc_add_neon
844 // iadst16 requires clobbering v8-v15, but idct16 doesn't need to.
845 .ifnc \txfm1\()_\txfm2,idct_idct
846 stp d14, d15, [sp, #-0x10]!
847 stp d12, d13, [sp, #-0x10]!
848 stp d10, d11, [sp, #-0x10]!
849 stp d8, d9, [sp, #-0x10]!
858 movrel x10, idct_coeffs
859 .ifnc \txfm1\()_\txfm2,idct_idct
860 movrel x11, iadst16_coeffs
863 ld1 {v0.8h,v1.8h}, [x10]
867 .ifc \txfm1\()_\txfm2,idct_idct
869 b.le idct16x16_quarter_add_neon
871 b.le idct16x16_half_add_neon
876 .ifc \txfm1\()_\txfm2,idct_idct
884 bl \txfm1\()16_1d_8x16_pass1_neon
886 .ifc \txfm1\()_\txfm2,iadst_idct
887 ld1 {v0.8h,v1.8h}, [x10]
890 .ifc \txfm1\()_\txfm2,idct_idct
893 // Set v24-v31 to zero, for the in-register passthrough of
894 // coefficients to pass 2. Since we only do two slices, this can
895 // only ever happen for the second slice. So we only need to store
896 // zeros to the temp buffer for the second half of the buffer.
897 // Move x0 to the second half, and use x9 == 32 as increment.
899 .irp i, 24, 25, 26, 27, 28, 29, 30, 31
901 st1 {v24.8h}, [x0], x9
911 bl \txfm2\()16_1d_8x16_pass2_neon
915 .ifnc \txfm1\()_\txfm2,idct_idct
916 ldp d8, d9, [sp], 0x10
917 ldp d10, d11, [sp], 0x10
918 ldp d12, d13, [sp], 0x10
919 ldp d14, d15, [sp], 0x10
925 itxfm_func16x16 idct, idct
926 itxfm_func16x16 iadst, idct
927 itxfm_func16x16 idct, iadst
928 itxfm_func16x16 iadst, iadst
930 function idct16_1d_8x16_pass1_quarter_neon
933 .irp i, 16, 17, 18, 19
934 load_clear \i, x2, x9
939 // Do two 8x8 transposes. Originally, v16-v31 contain the
940 // 16 rows. Afterwards, v16-v23 and v24-v31 contain the two
941 // transposed 8x8 blocks.
942 transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
943 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3
945 // Store the transposed 8x8 blocks horizontally.
946 // The first 8x8 block is kept in registers for the second pass,
947 // store the rest in the temp buffer.
948 // Since only a 4x4 part of the input was nonzero, this means that
949 // only 4 rows are nonzero after transposing, and the second pass
950 // only reads the topmost 4 rows. Therefore only store the topmost
953 .irp i, 24, 25, 26, 27
959 function idct16_1d_8x16_pass2_quarter_neon
962 .irp i, 16, 17, 18, 19
971 load_add_store v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v16.8b, v17.8b
972 load_add_store v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h, v16.8b, v17.8b
977 function idct16_1d_8x16_pass1_half_neon
980 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
981 load_clear \i, x2, x9
986 // Do two 8x8 transposes. Originally, v16-v31 contain the
987 // 16 rows. Afterwards, v16-v23 and v24-v31 contain the two
988 // transposed 8x8 blocks.
989 transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
990 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3
992 // Store the transposed 8x8 blocks horizontally.
993 // The first 8x8 block is kept in registers for the second pass,
994 // store the rest in the temp buffer.
996 .irp i, 24, 25, 26, 27, 28, 29, 30, 31
1002 function idct16_1d_8x16_pass2_half_neon
1005 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
1014 load_add_store v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v16.8b, v17.8b
1015 load_add_store v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h, v16.8b, v17.8b
1020 .macro idct16_partial size
1021 function idct16x16_\size\()_add_neon
1024 bl idct16_1d_8x16_pass1_\size\()_neon
1030 bl idct16_1d_8x16_pass2_\size\()_neon
1038 idct16_partial quarter
1041 function idct32x32_dc_add_neon
1042 movrel x4, idct_coeffs
1048 smull v2.4s, v2.4h, v0.h[0]
1049 rshrn v2.4h, v2.4s, #14
1050 smull v2.4s, v2.4h, v0.h[0]
1051 rshrn v2.4h, v2.4s, #14
1055 srshr v0.8h, v2.8h, #6
1059 // Loop to add the constant v0 into all 32x32 outputs
1060 ld1 {v1.16b,v2.16b}, [x0]
1061 uaddw v3.8h, v0.8h, v1.8b
1062 uaddw2 v4.8h, v0.8h, v1.16b
1063 uaddw v5.8h, v0.8h, v2.8b
1064 uaddw2 v6.8h, v0.8h, v2.16b
1066 sqxtun2 v3.16b, v4.8h
1068 sqxtun2 v4.16b, v6.8h
1069 st1 {v3.16b,v4.16b}, [x0], x1
1077 butterfly_8h v16, v5, v4, v5 // v16 = t16a, v5 = t19a
1078 butterfly_8h v17, v20, v23, v20 // v17 = t17, v20 = t18
1079 butterfly_8h v18, v6, v7, v6 // v18 = t23a, v6 = t20a
1080 butterfly_8h v19, v21, v22, v21 // v19 = t22, v21 = t21
1081 butterfly_8h v4, v28, v28, v30 // v4 = t24a, v28 = t27a
1082 butterfly_8h v23, v26, v25, v26 // v23 = t25, v26 = t26
1083 butterfly_8h v7, v3, v29, v31 // v7 = t31a, v3 = t28a
1084 butterfly_8h v22, v27, v24, v27 // v22 = t30, v27 = t29
1086 dmbutterfly v27, v20, v0.h[1], v0.h[2], v24, v25, v30, v31 // v27 = t18a, v20 = t29a
1087 dmbutterfly v3, v5, v0.h[1], v0.h[2], v24, v25, v30, v31 // v3 = t19, v5 = t28
1088 dmbutterfly v28, v6, v0.h[1], v0.h[2], v24, v25, v30, v31, neg=1 // v28 = t27, v6 = t20
1089 dmbutterfly v26, v21, v0.h[1], v0.h[2], v24, v25, v30, v31, neg=1 // v26 = t26a, v21 = t21a
1091 butterfly_8h v31, v24, v7, v4 // v31 = t31, v24 = t24
1092 butterfly_8h v30, v25, v22, v23 // v30 = t30a, v25 = t25a
1093 butterfly_8h_r v23, v16, v16, v18 // v23 = t23, v16 = t16
1094 butterfly_8h_r v22, v17, v17, v19 // v22 = t22a, v17 = t17a
1095 butterfly_8h v18, v21, v27, v21 // v18 = t18, v21 = t21
1096 butterfly_8h_r v27, v28, v5, v28 // v27 = t27a, v28 = t28a
1097 butterfly_8h v29, v26, v20, v26 // v29 = t29, v26 = t26
1098 butterfly_8h v19, v20, v3, v6 // v19 = t19a, v20 = t20
1100 dmbutterfly0 v27, v20, v27, v20, v2, v3, v4, v5, v6, v7 // v27 = t27, v20 = t20
1101 dmbutterfly0 v26, v21, v26, v21, v2, v3, v4, v5, v6, v7 // v26 = t26a, v21 = t21a
1102 dmbutterfly0 v25, v22, v25, v22, v2, v3, v4, v5, v6, v7 // v25 = t25, v22 = t22
1103 dmbutterfly0 v24, v23, v24, v23, v2, v3, v4, v5, v6, v7 // v24 = t24a, v23 = t23a
1108 ld1 {v0.8h,v1.8h}, [x11]
1110 dmbutterfly v16, v31, v0.h[0], v0.h[1], v4, v5, v6, v7 // v16 = t16a, v31 = t31a
1111 dmbutterfly v24, v23, v0.h[2], v0.h[3], v4, v5, v6, v7 // v24 = t17a, v23 = t30a
1112 dmbutterfly v20, v27, v0.h[4], v0.h[5], v4, v5, v6, v7 // v20 = t18a, v27 = t29a
1113 dmbutterfly v28, v19, v0.h[6], v0.h[7], v4, v5, v6, v7 // v28 = t19a, v19 = t28a
1114 dmbutterfly v18, v29, v1.h[0], v1.h[1], v4, v5, v6, v7 // v18 = t20a, v29 = t27a
1115 dmbutterfly v26, v21, v1.h[2], v1.h[3], v4, v5, v6, v7 // v26 = t21a, v21 = t26a
1116 dmbutterfly v22, v25, v1.h[4], v1.h[5], v4, v5, v6, v7 // v22 = t22a, v25 = t25a
1117 dmbutterfly v30, v17, v1.h[6], v1.h[7], v4, v5, v6, v7 // v30 = t23a, v17 = t24a
1121 butterfly_8h v4, v24, v16, v24 // v4 = t16, v24 = t17
1122 butterfly_8h v5, v20, v28, v20 // v5 = t19, v20 = t18
1123 butterfly_8h v6, v26, v18, v26 // v6 = t20, v26 = t21
1124 butterfly_8h v7, v22, v30, v22 // v7 = t23, v22 = t22
1125 butterfly_8h v28, v25, v17, v25 // v28 = t24, v25 = t25
1126 butterfly_8h v30, v21, v29, v21 // v30 = t27, v21 = t26
1127 butterfly_8h v29, v23, v31, v23 // v29 = t31, v23 = t30
1128 butterfly_8h v31, v27, v19, v27 // v31 = t28, v27 = t29
1130 dmbutterfly v23, v24, v0.h[3], v0.h[4], v16, v17, v18, v19 // v23 = t17a, v24 = t30a
1131 dmbutterfly v27, v20, v0.h[3], v0.h[4], v16, v17, v18, v19, neg=1 // v27 = t29a, v20 = t18a
1132 dmbutterfly v21, v26, v0.h[5], v0.h[6], v16, v17, v18, v19 // v21 = t21a, v26 = t26a
1133 dmbutterfly v25, v22, v0.h[5], v0.h[6], v16, v17, v18, v19, neg=1 // v25 = t25a, v22 = t22a
1137 function idct32_odd_half
1138 ld1 {v0.8h,v1.8h}, [x11]
1140 dmbutterfly_h1 v16, v31, v0.h[0], v0.h[1], v4, v5, v6, v7 // v16 = t16a, v31 = t31a
1141 dmbutterfly_h2 v24, v23, v0.h[2], v0.h[3], v4, v5, v6, v7 // v24 = t17a, v23 = t30a
1142 dmbutterfly_h1 v20, v27, v0.h[4], v0.h[5], v4, v5, v6, v7 // v20 = t18a, v27 = t29a
1143 dmbutterfly_h2 v28, v19, v0.h[6], v0.h[7], v4, v5, v6, v7 // v28 = t19a, v19 = t28a
1144 dmbutterfly_h1 v18, v29, v1.h[0], v1.h[1], v4, v5, v6, v7 // v18 = t20a, v29 = t27a
1145 dmbutterfly_h2 v26, v21, v1.h[2], v1.h[3], v4, v5, v6, v7 // v26 = t21a, v21 = t26a
1146 dmbutterfly_h1 v22, v25, v1.h[4], v1.h[5], v4, v5, v6, v7 // v22 = t22a, v25 = t25a
1147 dmbutterfly_h2 v30, v17, v1.h[6], v1.h[7], v4, v5, v6, v7 // v30 = t23a, v17 = t24a
1151 butterfly_8h v4, v24, v16, v24 // v4 = t16, v24 = t17
1152 butterfly_8h v5, v20, v28, v20 // v5 = t19, v20 = t18
1153 butterfly_8h v6, v26, v18, v26 // v6 = t20, v26 = t21
1154 butterfly_8h v7, v22, v30, v22 // v7 = t23, v22 = t22
1155 butterfly_8h v28, v25, v17, v25 // v28 = t24, v25 = t25
1156 butterfly_8h v30, v21, v29, v21 // v30 = t27, v21 = t26
1157 butterfly_8h v29, v23, v31, v23 // v29 = t31, v23 = t30
1158 butterfly_8h v31, v27, v19, v27 // v31 = t28, v27 = t29
1160 dmbutterfly v23, v24, v0.h[3], v0.h[4], v16, v17, v18, v19 // v23 = t17a, v24 = t30a
1161 dmbutterfly v27, v20, v0.h[3], v0.h[4], v16, v17, v18, v19, neg=1 // v27 = t29a, v20 = t18a
1162 dmbutterfly v21, v26, v0.h[5], v0.h[6], v16, v17, v18, v19 // v21 = t21a, v26 = t26a
1163 dmbutterfly v25, v22, v0.h[5], v0.h[6], v16, v17, v18, v19, neg=1 // v25 = t25a, v22 = t22a
1167 function idct32_odd_quarter
1168 ld1 {v0.8h,v1.8h}, [x11]
1170 dsmull_h v4, v5, v16, v0.h[0]
1171 dsmull_h v28, v29, v19, v0.h[7]
1172 dsmull_h v30, v31, v16, v0.h[1]
1173 dsmull_h v22, v23, v17, v1.h[6]
1174 dsmull_h v7, v6, v17, v1.h[7]
1175 dsmull_h v26, v27, v19, v0.h[6]
1176 dsmull_h v20, v21, v18, v1.h[0]
1177 dsmull_h v24, v25, v18, v1.h[1]
1186 drshrn_h v4, v4, v5, #14
1187 drshrn_h v5, v28, v29, #14
1188 drshrn_h v29, v30, v31, #14
1189 drshrn_h v28, v22, v23, #14
1190 drshrn_h v7, v7, v6, #14
1191 drshrn_h v31, v26, v27, #14
1192 drshrn_h v6, v20, v21, #14
1193 drshrn_h v30, v24, v25, #14
1195 dmbutterfly_l v16, v17, v18, v19, v29, v4, v0.h[3], v0.h[4]
1196 dmbutterfly_l v27, v26, v20, v21, v31, v5, v0.h[3], v0.h[4]
1197 drshrn_h v23, v16, v17, #14
1198 drshrn_h v24, v18, v19, #14
1201 drshrn_h v27, v27, v26, #14
1202 drshrn_h v20, v20, v21, #14
1203 dmbutterfly_l v16, v17, v18, v19, v30, v6, v0.h[5], v0.h[6]
1204 drshrn_h v21, v16, v17, #14
1205 drshrn_h v26, v18, v19, #14
1206 dmbutterfly_l v16, v17, v18, v19, v28, v7, v0.h[5], v0.h[6]
1207 drshrn_h v25, v16, v17, #14
1210 drshrn_h v22, v18, v19, #14
1215 .macro idct32_funcs suffix
1216 // Do an 32-point IDCT of a 8x32 slice out of a 32x32 matrix.
1217 // The 32-point IDCT can be decomposed into two 16-point IDCTs;
1218 // a normal IDCT16 with every other input component (the even ones, with
1219 // each output written twice), followed by a separate 16-point IDCT
1220 // of the odd inputs, added/subtracted onto the outputs of the first idct16.
1221 // x0 = dst (temp buffer)
1224 // x9 = double input stride
1225 // x10 = idct_coeffs
1226 // x11 = idct_coeffs + 32
1227 function idct32_1d_8x32_pass1\suffix\()_neon
1229 ld1 {v0.8h,v1.8h}, [x10]
1233 // v16 = IN(0), v17 = IN(2) ... v31 = IN(30)
1235 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
1236 load_clear \i, x2, x9
1239 .ifc \suffix,_quarter
1240 .irp i, 16, 17, 18, 19
1241 load_clear \i, x2, x9
1245 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
1246 load_clear \i, x2, x9
1252 // Do two 8x8 transposes. Originally, v16-v31 contain the
1253 // 16 rows. Afterwards, v16-v23 and v24-v31 contain the
1254 // two transposed 8x8 blocks.
1255 transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3
1256 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3
1258 // Store the registers a, b horizontally, followed by the
1259 // same registers b, a mirrored.
1260 .macro store_rev a, b
1261 // There's no rev128 instruction, but we reverse each 64 bit
1262 // half, and then flip them using an ext with 8 bytes offset.
1266 ext v1.16b, v1.16b, v1.16b, #8
1268 ext v0.16b, v0.16b, v0.16b, #8
1269 st1 {v1.8h}, [x0], #16
1270 st1 {v0.8h}, [x0], #16
1272 store_rev v16.8h, v24.8h
1273 store_rev v17.8h, v25.8h
1274 store_rev v18.8h, v26.8h
1275 store_rev v19.8h, v27.8h
1276 store_rev v20.8h, v28.8h
1277 store_rev v21.8h, v29.8h
1278 store_rev v22.8h, v30.8h
1279 store_rev v23.8h, v31.8h
1283 // Move x2 back to the start of the input, and move
1284 // to the first odd row
1286 sub x2, x2, x9, lsl #4
1288 .ifc \suffix,_quarter
1289 sub x2, x2, x9, lsl #2
1292 sub x2, x2, x9, lsl #3
1297 // v16 = IN(1), v17 = IN(3) ... v31 = IN(31)
1299 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
1300 load_clear \i, x2, x9
1303 .ifc \suffix,_quarter
1304 .irp i, 16, 17, 18, 19
1305 load_clear \i, x2, x9
1309 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
1310 load_clear \i, x2, x9
1314 bl idct32_odd\suffix
1316 transpose_8x8H v31, v30, v29, v28, v27, v26, v25, v24, v2, v3
1317 transpose_8x8H v23, v22, v21, v20, v19, v18, v17, v16, v2, v3
1319 // Store the registers a, b horizontally,
1320 // adding into the output first, and the mirrored,
1321 // subtracted from the output.
1322 .macro store_rev a, b
1325 add v4.8h, v4.8h, \a
1327 st1 {v4.8h}, [x0], #16
1328 ext v1.16b, v1.16b, v1.16b, #8
1330 ext v0.16b, v0.16b, v0.16b, #8
1331 add v5.8h, v5.8h, \b
1332 st1 {v5.8h}, [x0], #16
1334 sub v6.8h, v6.8h, v1.8h
1335 st1 {v6.8h}, [x0], #16
1337 sub v7.8h, v7.8h, v0.8h
1338 st1 {v7.8h}, [x0], #16
1341 store_rev v31.8h, v23.8h
1342 store_rev v30.8h, v22.8h
1343 store_rev v29.8h, v21.8h
1344 store_rev v28.8h, v20.8h
1345 store_rev v27.8h, v19.8h
1346 store_rev v26.8h, v18.8h
1347 store_rev v25.8h, v17.8h
1348 store_rev v24.8h, v16.8h
1353 // This is mostly the same as 8x32_pass1, but without the transpose,
1354 // and use the source as temp buffer between the two idct passes, and
1355 // add into the destination.
1358 // x2 = src (temp buffer)
1359 // x7 = negative double temp buffer stride
1360 // x9 = double temp buffer stride
1361 // x10 = idct_coeffs
1362 // x11 = idct_coeffs + 32
1363 function idct32_1d_8x32_pass2\suffix\()_neon
1365 ld1 {v0.8h,v1.8h}, [x10]
1367 // v16 = IN(0), v17 = IN(2) ... v31 = IN(30)
1369 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
1372 sub x2, x2, x9, lsl #4
1374 .ifc \suffix,_quarter
1375 .irp i, 16, 17, 18, 19
1378 sub x2, x2, x9, lsl #2
1381 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
1384 sub x2, x2, x9, lsl #3
1389 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
1393 sub x2, x2, x9, lsl #4
1396 // v16 = IN(1), v17 = IN(3) ... v31 = IN(31)
1398 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
1401 sub x2, x2, x9, lsl #4
1403 .ifc \suffix,_quarter
1404 .irp i, 16, 17, 18, 19
1407 sub x2, x2, x9, lsl #2
1410 .irp i, 16, 17, 18, 19, 20, 21, 22, 23
1413 sub x2, x2, x9, lsl #3
1417 bl idct32_odd\suffix
1419 .macro load_acc_store a, b, c, d, neg=0
1421 ld1 {v4.8h}, [x2], x9
1422 ld1 {v5.8h}, [x2], x9
1423 add v4.8h, v4.8h, \a
1424 ld1 {v6.8h}, [x2], x9
1425 add v5.8h, v5.8h, \b
1426 ld1 {v7.8h}, [x2], x9
1427 add v6.8h, v6.8h, \c
1428 add v7.8h, v7.8h, \d
1430 ld1 {v4.8h}, [x2], x7
1431 ld1 {v5.8h}, [x2], x7
1432 sub v4.8h, v4.8h, \a
1433 ld1 {v6.8h}, [x2], x7
1434 sub v5.8h, v5.8h, \b
1435 ld1 {v7.8h}, [x2], x7
1436 sub v6.8h, v6.8h, \c
1437 sub v7.8h, v7.8h, \d
1439 ld1 {v0.8b}, [x0], x1
1440 ld1 {v1.8b}, [x0], x1
1441 srshr v4.8h, v4.8h, #6
1442 ld1 {v2.8b}, [x0], x1
1443 srshr v5.8h, v5.8h, #6
1444 uaddw v4.8h, v4.8h, v0.8b
1445 ld1 {v3.8b}, [x0], x1
1446 srshr v6.8h, v6.8h, #6
1447 uaddw v5.8h, v5.8h, v1.8b
1448 srshr v7.8h, v7.8h, #6
1449 sub x0, x0, x1, lsl #2
1450 uaddw v6.8h, v6.8h, v2.8b
1452 uaddw v7.8h, v7.8h, v3.8b
1454 st1 {v4.8b}, [x0], x1
1456 st1 {v5.8b}, [x0], x1
1458 st1 {v6.8b}, [x0], x1
1459 st1 {v7.8b}, [x0], x1
1461 load_acc_store v31.8h, v30.8h, v29.8h, v28.8h
1462 load_acc_store v27.8h, v26.8h, v25.8h, v24.8h
1463 load_acc_store v23.8h, v22.8h, v21.8h, v20.8h
1464 load_acc_store v19.8h, v18.8h, v17.8h, v16.8h
1466 load_acc_store v16.8h, v17.8h, v18.8h, v19.8h, 1
1467 load_acc_store v20.8h, v21.8h, v22.8h, v23.8h, 1
1468 load_acc_store v24.8h, v25.8h, v26.8h, v27.8h, 1
1469 load_acc_store v28.8h, v29.8h, v30.8h, v31.8h, 1
1470 .purgem load_acc_store
1476 idct32_funcs _quarter
1479 const min_eob_idct_idct_32, align=4
1480 .short 0, 34, 135, 336
1483 function ff_vp9_idct_idct_32x32_add_neon, export=1
1485 b.eq idct32x32_dc_add_neon
1487 movrel x10, idct_coeffs
1489 movrel x12, min_eob_idct_idct_32, 2
1493 stp d14, d15, [sp, #-0x10]!
1494 stp d12, d13, [sp, #-0x10]!
1495 stp d10, d11, [sp, #-0x10]!
1496 stp d8, d9, [sp, #-0x10]!
1504 // Double stride of the input, since we only read every other line
1509 b.le idct32x32_quarter_add_neon
1511 b.le idct32x32_half_add_neon
1513 .irp i, 0, 8, 16, 24
1514 add x0, sp, #(\i*64)
1518 mov x1, #(32 - \i)/4
1522 bl idct32_1d_8x32_pass1_neon
1527 // Write zeros to the temp buffer for pass 2
1535 st1 {v16.8h-v19.8h}, [x0], #64
1539 .irp i, 0, 8, 16, 24
1543 bl idct32_1d_8x32_pass2_neon
1548 ldp d8, d9, [sp], 0x10
1549 ldp d10, d11, [sp], 0x10
1550 ldp d12, d13, [sp], 0x10
1551 ldp d14, d15, [sp], 0x10
1556 .macro idct32_partial size
1557 function idct32x32_\size\()_add_neon
1560 bl idct32_1d_8x32_pass1_\size\()_neon
1564 bl idct32_1d_8x32_pass1_\size\()_neon
1566 .irp i, 0, 8, 16, 24
1570 bl idct32_1d_8x32_pass2_\size\()_neon
1575 ldp d8, d9, [sp], 0x10
1576 ldp d10, d11, [sp], 0x10
1577 ldp d12, d13, [sp], 0x10
1578 ldp d14, d15, [sp], 0x10
1584 idct32_partial quarter