/* * Copyright (c) 2016 Google Inc. * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/aarch64/asm.S" #include "neon.S" const itxfm4_coeffs, align=4 .short 11585, 6270, 15137, 0 iadst4_coeffs: .short 5283, 15212, 9929, 13377 endconst const iadst8_coeffs, align=4 .short 16305, 1606, 14449, 7723, 10394, 12665, 4756, 15679 idct_coeffs: .short 11585, 6270, 15137, 3196, 16069, 13623, 9102, 1606 .short 16305, 12665, 10394, 7723, 14449, 15679, 4756, 0 .short 804, 16364, 12140, 11003, 7005, 14811, 15426, 5520 .short 3981, 15893, 14053, 8423, 9760, 13160, 16207, 2404 endconst const iadst16_coeffs, align=4 .short 16364, 804, 15893, 3981, 14811, 7005, 13160, 9760 .short 11003, 12140, 8423, 14053, 5520, 15426, 2404, 16207 endconst // out1 = ((in1 + in2) * d0[0] + (1 << 13)) >> 14 // out2 = ((in1 - in2) * d0[0] + (1 << 13)) >> 14 // in/out are .8h registers; this can do with 4 temp registers, but is // more efficient if 6 temp registers are available. .macro dmbutterfly0 out1, out2, in1, in2, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, neg=0 .if \neg > 0 neg \tmp4\().4h, v0.4h .endif add \tmp1\().8h, \in1\().8h, \in2\().8h sub \tmp2\().8h, \in1\().8h, \in2\().8h .if \neg > 0 smull \tmp3\().4s, \tmp1\().4h, \tmp4\().h[0] smull2 \tmp4\().4s, \tmp1\().8h, \tmp4\().h[0] .else smull \tmp3\().4s, \tmp1\().4h, v0.h[0] smull2 \tmp4\().4s, \tmp1\().8h, v0.h[0] .endif .ifb \tmp5 rshrn \out1\().4h, \tmp3\().4s, #14 rshrn2 \out1\().8h, \tmp4\().4s, #14 smull \tmp3\().4s, \tmp2\().4h, v0.h[0] smull2 \tmp4\().4s, \tmp2\().8h, v0.h[0] rshrn \out2\().4h, \tmp3\().4s, #14 rshrn2 \out2\().8h, \tmp4\().4s, #14 .else smull \tmp5\().4s, \tmp2\().4h, v0.h[0] smull2 \tmp6\().4s, \tmp2\().8h, v0.h[0] rshrn \out1\().4h, \tmp3\().4s, #14 rshrn2 \out1\().8h, \tmp4\().4s, #14 rshrn \out2\().4h, \tmp5\().4s, #14 rshrn2 \out2\().8h, \tmp6\().4s, #14 .endif .endm // out1,out2 = in1 * coef1 - in2 * coef2 // out3,out4 = in1 * coef2 + in2 * coef1 // out are 4 x .4s registers, in are 2 x .8h registers .macro dmbutterfly_l out1, out2, out3, out4, in1, in2, coef1, coef2 smull \out1\().4s, \in1\().4h, \coef1 smull2 \out2\().4s, \in1\().8h, \coef1 smull \out3\().4s, \in1\().4h, \coef2 smull2 \out4\().4s, \in1\().8h, \coef2 smlsl \out1\().4s, \in2\().4h, \coef2 smlsl2 \out2\().4s, \in2\().8h, \coef2 smlal \out3\().4s, \in2\().4h, \coef1 smlal2 \out4\().4s, \in2\().8h, \coef1 .endm // inout1 = (inout1 * coef1 - inout2 * coef2 + (1 << 13)) >> 14 // inout2 = (inout1 * coef2 + inout2 * coef1 + (1 << 13)) >> 14 // inout are 2 x .8h registers .macro dmbutterfly inout1, inout2, coef1, coef2, tmp1, tmp2, tmp3, tmp4, neg=0 dmbutterfly_l \tmp1, \tmp2, \tmp3, \tmp4, \inout1, \inout2, \coef1, \coef2 .if \neg > 0 neg \tmp3\().4s, \tmp3\().4s neg \tmp4\().4s, \tmp4\().4s .endif rshrn \inout1\().4h, \tmp1\().4s, #14 rshrn2 \inout1\().8h, \tmp2\().4s, #14 rshrn \inout2\().4h, \tmp3\().4s, #14 rshrn2 \inout2\().8h, \tmp4\().4s, #14 .endm // out1 = in1 + in2 // out2 = in1 - in2 .macro butterfly_8h out1, out2, in1, in2 add \out1\().8h, \in1\().8h, \in2\().8h sub \out2\().8h, \in1\().8h, \in2\().8h .endm // out1 = in1 - in2 // out2 = in1 + in2 .macro butterfly_8h_r out1, out2, in1, in2 sub \out1\().8h, \in1\().8h, \in2\().8h add \out2\().8h, \in1\().8h, \in2\().8h .endm // out1 = (in1,in2 + in3,in4 + (1 << 13)) >> 14 // out2 = (in1,in2 - in3,in4 + (1 << 13)) >> 14 // out are 2 x .8h registers, in are 4 x .4s registers .macro dbutterfly_n out1, out2, in1, in2, in3, in4, tmp1, tmp2, tmp3, tmp4 add \tmp1\().4s, \in1\().4s, \in3\().4s add \tmp2\().4s, \in2\().4s, \in4\().4s sub \tmp3\().4s, \in1\().4s, \in3\().4s sub \tmp4\().4s, \in2\().4s, \in4\().4s rshrn \out1\().4h, \tmp1\().4s, #14 rshrn2 \out1\().8h, \tmp2\().4s, #14 rshrn \out2\().4h, \tmp3\().4s, #14 rshrn2 \out2\().8h, \tmp4\().4s, #14 .endm .macro iwht4 c0, c1, c2, c3 add \c0\().4h, \c0\().4h, \c1\().4h sub v17.4h, \c2\().4h, \c3\().4h sub v16.4h, \c0\().4h, v17.4h sshr v16.4h, v16.4h, #1 sub \c2\().4h, v16.4h, \c1\().4h sub \c1\().4h, v16.4h, \c3\().4h add \c3\().4h, v17.4h, \c2\().4h sub \c0\().4h, \c0\().4h, \c1\().4h .endm .macro idct4 c0, c1, c2, c3 smull v22.4s, \c1\().4h, v0.h[2] smull v20.4s, \c1\().4h, v0.h[1] add v16.4h, \c0\().4h, \c2\().4h sub v17.4h, \c0\().4h, \c2\().4h smlal v22.4s, \c3\().4h, v0.h[1] smull v18.4s, v16.4h, v0.h[0] smull v19.4s, v17.4h, v0.h[0] smlsl v20.4s, \c3\().4h, v0.h[2] rshrn v22.4h, v22.4s, #14 rshrn v18.4h, v18.4s, #14 rshrn v19.4h, v19.4s, #14 rshrn v20.4h, v20.4s, #14 add \c0\().4h, v18.4h, v22.4h sub \c3\().4h, v18.4h, v22.4h add \c1\().4h, v19.4h, v20.4h sub \c2\().4h, v19.4h, v20.4h .endm .macro iadst4 c0, c1, c2, c3 smull v16.4s, \c0\().4h, v0.h[4] smlal v16.4s, \c2\().4h, v0.h[5] smlal v16.4s, \c3\().4h, v0.h[6] smull v17.4s, \c0\().4h, v0.h[6] smlsl v17.4s, \c2\().4h, v0.h[4] sub \c0\().4h, \c0\().4h, \c2\().4h smlsl v17.4s, \c3\().4h, v0.h[5] add \c0\().4h, \c0\().4h, \c3\().4h smull v19.4s, \c1\().4h, v0.h[7] smull v18.4s, \c0\().4h, v0.h[7] add v20.4s, v16.4s, v19.4s add v21.4s, v17.4s, v19.4s rshrn \c0\().4h, v20.4s, #14 add v16.4s, v16.4s, v17.4s rshrn \c1\().4h, v21.4s, #14 sub v16.4s, v16.4s, v19.4s rshrn \c2\().4h, v18.4s, #14 rshrn \c3\().4h, v16.4s, #14 .endm // The public functions in this file have got the following signature: // void itxfm_add(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob); .macro itxfm_func4x4 txfm1, txfm2 function ff_vp9_\txfm1\()_\txfm2\()_4x4_add_neon, export=1 .ifc \txfm1,\txfm2 .ifc \txfm1,idct movrel x4, itxfm4_coeffs ld1 {v0.4h}, [x4] .endif .ifc \txfm1,iadst movrel x4, iadst4_coeffs ld1 {v0.d}[1], [x4] .endif .else movrel x4, itxfm4_coeffs ld1 {v0.8h}, [x4] .endif movi v31.8h, #0 .ifc \txfm1\()_\txfm2,idct_idct cmp w3, #1 b.ne 1f // DC-only for idct/idct ld1r {v2.4h}, [x2] smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 st1 {v31.h}[0], [x2] dup v4.4h, v2.h[0] mov v5.16b, v4.16b mov v6.16b, v4.16b mov v7.16b, v4.16b b 2f .endif 1: ld1 {v4.4h,v5.4h,v6.4h,v7.4h}, [x2] st1 {v31.8h}, [x2], #16 .ifc \txfm1,iwht sshr v4.4h, v4.4h, #2 sshr v5.4h, v5.4h, #2 sshr v6.4h, v6.4h, #2 sshr v7.4h, v7.4h, #2 .endif \txfm1\()4 v4, v5, v6, v7 st1 {v31.8h}, [x2], #16 // Transpose 4x4 with 16 bit elements transpose_4x4H v4, v5, v6, v7, v16, v17, v18, v19 \txfm2\()4 v4, v5, v6, v7 2: ld1r {v0.2s}, [x0], x1 ld1r {v1.2s}, [x0], x1 .ifnc \txfm1,iwht srshr v4.4h, v4.4h, #4 srshr v5.4h, v5.4h, #4 srshr v6.4h, v6.4h, #4 srshr v7.4h, v7.4h, #4 .endif uaddw v4.8h, v4.8h, v0.8b uaddw v5.8h, v5.8h, v1.8b ld1r {v2.2s}, [x0], x1 ld1r {v3.2s}, [x0], x1 sqxtun v0.8b, v4.8h sqxtun v1.8b, v5.8h sub x0, x0, x1, lsl #2 uaddw v6.8h, v6.8h, v2.8b uaddw v7.8h, v7.8h, v3.8b st1 {v0.s}[0], [x0], x1 sqxtun v2.8b, v6.8h sqxtun v3.8b, v7.8h st1 {v1.s}[0], [x0], x1 st1 {v2.s}[0], [x0], x1 st1 {v3.s}[0], [x0], x1 ret endfunc .endm itxfm_func4x4 idct, idct itxfm_func4x4 iadst, idct itxfm_func4x4 idct, iadst itxfm_func4x4 iadst, iadst itxfm_func4x4 iwht, iwht .macro idct8 dmbutterfly0 v16, v20, v16, v20, v2, v3, v4, v5, v6, v7 // v16 = t0a, v20 = t1a dmbutterfly v18, v22, v0.h[1], v0.h[2], v2, v3, v4, v5 // v18 = t2a, v22 = t3a dmbutterfly v17, v23, v0.h[3], v0.h[4], v2, v3, v4, v5 // v17 = t4a, v23 = t7a dmbutterfly v21, v19, v0.h[5], v0.h[6], v2, v3, v4, v5 // v21 = t5a, v19 = t6a butterfly_8h v24, v25, v16, v22 // v24 = t0, v25 = t3 butterfly_8h v28, v29, v17, v21 // v28 = t4, v29 = t5a butterfly_8h v30, v31, v23, v19 // v30 = t7, v31 = t6a butterfly_8h v26, v27, v20, v18 // v26 = t1, v27 = t2 dmbutterfly0 v31, v29, v31, v29, v2, v3, v4, v5, v6, v7 // v31 = t6, v29 = t5 butterfly_8h v16, v23, v24, v30 // v16 = out[0], v23 = out[7] butterfly_8h v17, v22, v26, v31 // v17 = out[1], v22 = out[6] butterfly_8h v18, v21, v27, v29 // q13 = out[2], q10 = out[5] butterfly_8h v19, v20, v25, v28 // v17 = out[3], q12 = out[4] .endm .macro iadst8 dmbutterfly_l v24, v25, v26, v27, v23, v16, v1.h[1], v1.h[0] // v24,v25 = t1a, v26,v27 = t0a dmbutterfly_l v28, v29, v30, v31, v21, v18, v1.h[3], v1.h[2] // v28,v29 = t3a, v30,v31 = t2a dmbutterfly_l v2, v3, v4, v5, v19, v20, v1.h[5], v1.h[4] // v2,v3 = t5a, v4,v5 = t4a dmbutterfly_l v16, v18, v21, v23, v17, v22, v1.h[7], v1.h[6] // v16,v18 = t7a, v21,v23 = t6a dbutterfly_n v4, v5, v26, v27, v4, v5, v6, v7, v26, v27 // v4 = t0, v5 = t4 dbutterfly_n v2, v3, v24, v25, v2, v3, v6, v7, v26, v27 // v2 = t1, v3 = t5 dbutterfly_n v24, v25, v30, v31, v21, v23, v6, v7, v26, v27 // v24 = t2, v25 = t6 dbutterfly_n v30, v31, v28, v29, v16, v18, v6, v7, v26, v27 // v30 = t3, v31 = t7 butterfly_8h v16, v6, v4, v24 // v16 = out[0], v6 = t2 butterfly_8h v23, v7, v2, v30 // v23 = -out[7], v7 = t3 neg v23.8h, v23.8h // v23 = out[7] dmbutterfly0 v19, v20, v6, v7, v24, v26, v27, v28, v29, v30 // v19 = -out[3], v20 = out[4] neg v19.8h, v19.8h // v19 = out[3] dmbutterfly_l v26, v27, v28, v29, v5, v3, v0.h[1], v0.h[2] // v26,v27 = t5a, v28,v29 = t4a dmbutterfly_l v2, v3, v4, v5, v31, v25, v0.h[2], v0.h[1] // v2,v3 = t6a, v4,v5 = t7a dbutterfly_n v17, v30, v28, v29, v2, v3, v6, v7, v24, v25 // v17 = -out[1], v30 = t6 dbutterfly_n v22, v31, v26, v27, v4, v5, v6, v7, v24, v25 // v22 = out[6], v31 = t7 neg v17.8h, v17.8h // v17 = out[1] dmbutterfly0 v18, v21, v30, v31, v2, v3, v4, v5, v6, v7 // v18 = out[2], v21 = -out[5] neg v21.8h, v21.8h // v21 = out[5] .endm .macro itxfm_func8x8 txfm1, txfm2 function ff_vp9_\txfm1\()_\txfm2\()_8x8_add_neon, export=1 // The iadst also uses a few coefficients from // idct, so those always need to be loaded. .ifc \txfm1\()_\txfm2,idct_idct movrel x4, idct_coeffs ld1 {v0.8h}, [x4] .else movrel x4, iadst8_coeffs ld1 {v1.8h}, [x4], #16 ld1 {v0.8h}, [x4] .endif movi v2.16b, #0 movi v3.16b, #0 movi v4.16b, #0 movi v5.16b, #0 .ifc \txfm1\()_\txfm2,idct_idct cmp w3, #1 b.ne 1f // DC-only for idct/idct ld1r {v2.4h}, [x2] smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 st1 {v3.h}[0], [x2] dup v16.8h, v2.h[0] mov v17.16b, v16.16b mov v18.16b, v16.16b mov v19.16b, v16.16b mov v20.16b, v16.16b mov v21.16b, v16.16b mov v22.16b, v16.16b mov v23.16b, v16.16b b 2f .endif 1: ld1 {v16.16b,v17.16b,v18.16b,v19.16b}, [x2], #64 ld1 {v20.16b,v21.16b,v22.16b,v23.16b}, [x2], #64 sub x2, x2, #128 st1 {v2.16b,v3.16b,v4.16b,v5.16b}, [x2], #64 st1 {v2.16b,v3.16b,v4.16b,v5.16b}, [x2], #64 \txfm1\()8 // Transpose 8x8 with 16 bit elements transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v24, v25 \txfm2\()8 2: mov x3, x0 // Add into the destination ld1 {v0.8b}, [x0], x1 srshr v16.8h, v16.8h, #5 ld1 {v1.8b}, [x0], x1 srshr v17.8h, v17.8h, #5 ld1 {v2.8b}, [x0], x1 srshr v18.8h, v18.8h, #5 uaddw v16.8h, v16.8h, v0.8b ld1 {v3.8b}, [x0], x1 srshr v19.8h, v19.8h, #5 uaddw v17.8h, v17.8h, v1.8b ld1 {v4.8b}, [x0], x1 srshr v20.8h, v20.8h, #5 uaddw v18.8h, v18.8h, v2.8b sqxtun v0.8b, v16.8h ld1 {v5.8b}, [x0], x1 srshr v21.8h, v21.8h, #5 uaddw v19.8h, v19.8h, v3.8b sqxtun v1.8b, v17.8h ld1 {v6.8b}, [x0], x1 srshr v22.8h, v22.8h, #5 uaddw v20.8h, v20.8h, v4.8b sqxtun v2.8b, v18.8h ld1 {v7.8b}, [x0], x1 srshr v23.8h, v23.8h, #5 uaddw v21.8h, v21.8h, v5.8b sqxtun v3.8b, v19.8h st1 {v0.8b}, [x3], x1 uaddw v22.8h, v22.8h, v6.8b st1 {v1.8b}, [x3], x1 sqxtun v4.8b, v20.8h st1 {v2.8b}, [x3], x1 uaddw v23.8h, v23.8h, v7.8b st1 {v3.8b}, [x3], x1 sqxtun v5.8b, v21.8h st1 {v4.8b}, [x3], x1 sqxtun v6.8b, v22.8h st1 {v5.8b}, [x3], x1 sqxtun v7.8b, v23.8h st1 {v6.8b}, [x3], x1 st1 {v7.8b}, [x3], x1 ret endfunc .endm itxfm_func8x8 idct, idct itxfm_func8x8 iadst, idct itxfm_func8x8 idct, iadst itxfm_func8x8 iadst, iadst function idct16x16_dc_add_neon movrel x4, idct_coeffs ld1 {v0.4h}, [x4] movi v1.4h, #0 ld1r {v2.4h}, [x2] smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 dup v2.8h, v2.h[0] st1 {v1.h}[0], [x2] srshr v2.8h, v2.8h, #6 mov x4, #16 1: // Loop to add the constant from v2 into all 16x16 outputs ld1 {v3.16b}, [x0] uaddw v4.8h, v2.8h, v3.8b uaddw2 v5.8h, v2.8h, v3.16b sqxtun v4.8b, v4.8h sqxtun2 v4.16b, v5.8h st1 {v4.16b}, [x0], x1 subs x4, x4, #1 b.ne 1b ret endfunc .macro idct16 dmbutterfly0 v16, v24, v16, v24, v2, v3, v4, v5, v6, v7 // v16 = t0a, v24 = t1a dmbutterfly v20, v28, v0.h[1], v0.h[2], v2, v3, v4, v5 // v20 = t2a, v28 = t3a dmbutterfly v18, v30, v0.h[3], v0.h[4], v2, v3, v4, v5 // v18 = t4a, v30 = t7a dmbutterfly v26, v22, v0.h[5], v0.h[6], v2, v3, v4, v5 // v26 = t5a, v22 = t6a dmbutterfly v17, v31, v0.h[7], v1.h[0], v2, v3, v4, v5 // v17 = t8a, v31 = t15a dmbutterfly v25, v23, v1.h[1], v1.h[2], v2, v3, v4, v5 // v25 = t9a, v23 = t14a dmbutterfly v21, v27, v1.h[3], v1.h[4], v2, v3, v4, v5 // v21 = t10a, v27 = t13a dmbutterfly v29, v19, v1.h[5], v1.h[6], v2, v3, v4, v5 // v29 = t11a, v19 = t12a butterfly_8h v4, v28, v16, v28 // v4 = t0, v28 = t3 butterfly_8h v5, v20, v24, v20 // v5 = t1, v20 = t2 butterfly_8h v6, v26, v18, v26 // v6 = t4, v26 = t5 butterfly_8h v7, v22, v30, v22 // v7 = t7, v22 = t6 butterfly_8h v16, v25, v17, v25 // v16 = t8, v25 = t9 butterfly_8h v24, v21, v29, v21 // v24 = t11, v21 = t10 butterfly_8h v17, v27, v19, v27 // v17 = t12, v27 = t13 butterfly_8h v29, v23, v31, v23 // v29 = t15, v23 = t14 dmbutterfly0 v22, v26, v22, v26, v2, v3, v18, v19, v30, v31 // v22 = t6a, v26 = t5a dmbutterfly v23, v25, v0.h[1], v0.h[2], v18, v19, v30, v31 // v23 = t9a, v25 = t14a dmbutterfly v27, v21, v0.h[1], v0.h[2], v18, v19, v30, v31, neg=1 // v27 = t13a, v21 = t10a butterfly_8h v18, v7, v4, v7 // v18 = t0a, v7 = t7a butterfly_8h v19, v22, v5, v22 // v19 = t1a, v22 = t6 butterfly_8h v4, v26, v20, v26 // v4 = t2a, v26 = t5 butterfly_8h v5, v6, v28, v6 // v5 = t3a, v6 = t4 butterfly_8h v20, v28, v16, v24 // v20 = t8a, v28 = t11a butterfly_8h v24, v21, v23, v21 // v24 = t9, v21 = t10 butterfly_8h v23, v27, v25, v27 // v23 = t14, v27 = t13 butterfly_8h v25, v29, v29, v17 // v25 = t15a, v29 = t12a dmbutterfly0 v2, v3, v27, v21, v2, v3, v16, v17, v30, v31 // v2 = t13a, v3 = t10a dmbutterfly0 v28, v27, v29, v28, v21, v29, v16, v17, v30, v31 // v28 = t12, v27 = t11 butterfly_8h v16, v31, v18, v25 // v16 = out[0], v31 = out[15] butterfly_8h v17, v30, v19, v23 // v17 = out[1], v30 = out[14] butterfly_8h_r v25, v22, v22, v24 // v25 = out[9], v22 = out[6] butterfly_8h v23, v24, v7, v20 // v23 = out[7], v24 = out[8] butterfly_8h v18, v29, v4, v2 // v18 = out[2], v29 = out[13] butterfly_8h v19, v28, v5, v28 // v19 = out[3], v28 = out[12] butterfly_8h v20, v27, v6, v27 // v20 = out[4], v27 = out[11] butterfly_8h v21, v26, v26, v3 // v21 = out[5], v26 = out[10] .endm .macro iadst16 ld1 {v0.8h,v1.8h}, [x11] dmbutterfly_l v6, v7, v4, v5, v31, v16, v0.h[1], v0.h[0] // v6,v7 = t1, v4,v5 = t0 dmbutterfly_l v10, v11, v8, v9, v23, v24, v1.h[1], v1.h[0] // v10,v11 = t9, v8,v9 = t8 dbutterfly_n v31, v24, v6, v7, v10, v11, v12, v13, v10, v11 // v31 = t1a, v24 = t9a dmbutterfly_l v14, v15, v12, v13, v29, v18, v0.h[3], v0.h[2] // v14,v15 = t3, v12,v13 = t2 dbutterfly_n v16, v23, v4, v5, v8, v9, v6, v7, v8, v9 // v16 = t0a, v23 = t8a dmbutterfly_l v6, v7, v4, v5, v21, v26, v1.h[3], v1.h[2] // v6,v7 = t11, v4,v5 = t10 dbutterfly_n v29, v26, v14, v15, v6, v7, v8, v9, v6, v7 // v29 = t3a, v26 = t11a dmbutterfly_l v10, v11, v8, v9, v27, v20, v0.h[5], v0.h[4] // v10,v11 = t5, v8,v9 = t4 dbutterfly_n v18, v21, v12, v13, v4, v5, v6, v7, v4, v5 // v18 = t2a, v21 = t10a dmbutterfly_l v14, v15, v12, v13, v19, v28, v1.h[5], v1.h[4] // v14,v15 = t13, v12,v13 = t12 dbutterfly_n v20, v28, v10, v11, v14, v15, v4, v5, v14, v15 // v20 = t5a, v28 = t13a dmbutterfly_l v6, v7, v4, v5, v25, v22, v0.h[7], v0.h[6] // v6,v7 = t7, v4,v5 = t6 dbutterfly_n v27, v19, v8, v9, v12, v13, v10, v11, v12, v13 // v27 = t4a, v19 = t12a dmbutterfly_l v10, v11, v8, v9, v17, v30, v1.h[7], v1.h[6] // v10,v11 = t15, v8,v9 = t14 ld1 {v0.8h}, [x10] dbutterfly_n v22, v30, v6, v7, v10, v11, v12, v13, v10, v11 // v22 = t7a, v30 = t15a dmbutterfly_l v14, v15, v12, v13, v23, v24, v0.h[3], v0.h[4] // v14,v15 = t9, v12,v13 = t8 dbutterfly_n v25, v17, v4, v5, v8, v9, v6, v7, v8, v9 // v25 = t6a, v17 = t14a dmbutterfly_l v4, v5, v6, v7, v28, v19, v0.h[4], v0.h[3] // v4,v5 = t12, v6,v7 = t13 dbutterfly_n v23, v19, v12, v13, v4, v5, v8, v9, v4, v5 // v23 = t8a, v19 = t12a dmbutterfly_l v10, v11, v8, v9, v21, v26, v0.h[5], v0.h[6] // v10,v11 = t11, v8,v9 = t10 butterfly_8h_r v4, v27, v16, v27 // v4 = t4, v27 = t0 dbutterfly_n v24, v28, v14, v15, v6, v7, v12, v13, v6, v7 // v24 = t9a, v28 = t13a dmbutterfly_l v12, v13, v14, v15, v30, v17, v0.h[6], v0.h[5] // v12,v13 = t14, v14,v15 = t15 butterfly_8h_r v5, v20, v31, v20 // v5 = t5, v20 = t1 dbutterfly_n v21, v17, v8, v9, v12, v13, v6, v7, v12, v13 // v21 = t10a, v17 = t14a dbutterfly_n v26, v30, v10, v11, v14, v15, v8, v9, v14, v15 // v26 = t11a, v30 = t15a butterfly_8h_r v6, v25, v18, v25 // v6 = t6, v25 = t2 butterfly_8h_r v7, v22, v29, v22 // v7 = t7, v22 = t3 dmbutterfly_l v10, v11, v8, v9, v19, v28, v0.h[1], v0.h[2] // v10,v11 = t13, v8,v9 = t12 dmbutterfly_l v12, v13, v14, v15, v30, v17, v0.h[2], v0.h[1] // v12,v13 = t14, v14,v15 = t15 dbutterfly_n v18, v30, v8, v9, v12, v13, v16, v17, v12, v13 // v18 = out[2], v30 = t14a dbutterfly_n v29, v17, v10, v11, v14, v15, v12, v13, v14, v15 // v29 = -out[13], v17 = t15a neg v29.8h, v29.8h // v29 = out[13] dmbutterfly_l v10, v11, v8, v9, v4, v5, v0.h[1], v0.h[2] // v10,v11 = t5a, v8,v9 = t4a dmbutterfly_l v12, v13, v14, v15, v7, v6, v0.h[2], v0.h[1] // v12,v13 = t6a, v14,v15 = t7a butterfly_8h v2, v6, v27, v25 // v2 = out[0], v6 = t2a butterfly_8h v3, v7, v23, v21 // v3 =-out[1], v7 = t10 dbutterfly_n v19, v31, v8, v9, v12, v13, v4, v5, v8, v9 // v19 = -out[3], v31 = t6 neg v19.8h, v19.8h // v19 = out[3] dbutterfly_n v28, v16, v10, v11, v14, v15, v4, v5, v10, v11 // v28 = out[12], v16 = t7 butterfly_8h v5, v8, v20, v22 // v5 =-out[15],v8 = t3a butterfly_8h v4, v9, v24, v26 // v4 = out[14],v9 = t11 dmbutterfly0 v23, v24, v6, v8, v10, v11, v12, v13, v14, v15, 1 // v23 = out[7], v24 = out[8] dmbutterfly0 v21, v26, v30, v17, v10, v11, v12, v13, v14, v15, 1 // v21 = out[5], v26 = out[10] dmbutterfly0 v20, v27, v16, v31, v10, v11, v12, v13, v14, v15 // v20 = out[4], v27 = out[11] dmbutterfly0 v22, v25, v9, v7, v10, v11, v12, v13, v14, v15 // v22 = out[6], v25 = out[9] neg v31.8h, v5.8h // v31 = out[15] neg v17.8h, v3.8h // v17 = out[1] mov v16.16b, v2.16b mov v30.16b, v4.16b .endm // Helper macros; we can't use these expressions directly within // e.g. .irp due to the extra concatenation \(). Therefore wrap // them in macros to allow using .irp below. .macro load i, src, inc ld1 {v\i\().8h}, [\src], \inc .endm .macro store i, dst, inc st1 {v\i\().8h}, [\dst], \inc .endm .macro movi_v i, size, imm movi v\i\()\size, \imm .endm .macro load_clear i, src, inc ld1 {v\i\().8h}, [\src] st1 {v2.8h}, [\src], \inc .endm // Read a vertical 8x16 slice out of a 16x16 matrix, do a transform on it, // transpose into a horizontal 16x8 slice and store. // x0 = dst (temp buffer) // x1 = slice offset // x2 = src // x9 = input stride .macro itxfm16_1d_funcs txfm function \txfm\()16_1d_8x16_pass1_neon movi v2.8h, #0 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 load_clear \i, x2, x9 .endr \txfm\()16 // Do two 8x8 transposes. Originally, v16-v31 contain the // 16 rows. Afterwards, v16-v23 and v24-v31 contain the two // transposed 8x8 blocks. transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3 // Store the transposed 8x8 blocks horizontally. cmp x1, #8 b.eq 1f .irp i, 16, 24, 17, 25, 18, 26, 19, 27, 20, 28, 21, 29, 22, 30, 23, 31 store \i, x0, #16 .endr ret 1: // Special case: For the last input column (x1 == 8), // which would be stored as the last row in the temp buffer, // don't store the first 8x8 block, but keep it in registers // for the first slice of the second pass (where it is the // last 8x8 block). .irp i, 24, 25, 26, 27, 28, 29, 30, 31 add x0, x0, #16 store \i, x0, #16 .endr mov v24.16b, v16.16b mov v25.16b, v17.16b mov v26.16b, v18.16b mov v27.16b, v19.16b mov v28.16b, v20.16b mov v29.16b, v21.16b mov v30.16b, v22.16b mov v31.16b, v23.16b ret endfunc // Read a vertical 8x16 slice out of a 16x16 matrix, do a transform on it, // load the destination pixels (from a similar 8x16 slice), add and store back. // x0 = dst // x1 = dst stride // x2 = src (temp buffer) // x3 = slice offset // x9 = temp buffer stride function \txfm\()16_1d_8x16_pass2_neon .irp i, 16, 17, 18, 19, 20, 21, 22, 23 load \i, x2, x9 .endr cbz x3, 1f .irp i, 24, 25, 26, 27, 28, 29, 30, 31 load \i, x2, x9 .endr 1: add x3, x0, x1 lsl x1, x1, #1 \txfm\()16 .macro load_add_store coef0, coef1, coef2, coef3, coef4, coef5, coef6, coef7, tmp1, tmp2 srshr \coef0, \coef0, #6 ld1 {v2.8b}, [x0], x1 srshr \coef1, \coef1, #6 ld1 {v3.8b}, [x3], x1 srshr \coef2, \coef2, #6 ld1 {v4.8b}, [x0], x1 srshr \coef3, \coef3, #6 uaddw \coef0, \coef0, v2.8b ld1 {v5.8b}, [x3], x1 uaddw \coef1, \coef1, v3.8b srshr \coef4, \coef4, #6 ld1 {v6.8b}, [x0], x1 srshr \coef5, \coef5, #6 ld1 {v7.8b}, [x3], x1 sqxtun v2.8b, \coef0 srshr \coef6, \coef6, #6 sqxtun v3.8b, \coef1 srshr \coef7, \coef7, #6 uaddw \coef2, \coef2, v4.8b ld1 {\tmp1}, [x0], x1 uaddw \coef3, \coef3, v5.8b ld1 {\tmp2}, [x3], x1 sqxtun v4.8b, \coef2 sub x0, x0, x1, lsl #2 sub x3, x3, x1, lsl #2 sqxtun v5.8b, \coef3 uaddw \coef4, \coef4, v6.8b st1 {v2.8b}, [x0], x1 uaddw \coef5, \coef5, v7.8b st1 {v3.8b}, [x3], x1 sqxtun v6.8b, \coef4 st1 {v4.8b}, [x0], x1 sqxtun v7.8b, \coef5 st1 {v5.8b}, [x3], x1 uaddw \coef6, \coef6, \tmp1 st1 {v6.8b}, [x0], x1 uaddw \coef7, \coef7, \tmp2 st1 {v7.8b}, [x3], x1 sqxtun \tmp1, \coef6 sqxtun \tmp2, \coef7 st1 {\tmp1}, [x0], x1 st1 {\tmp2}, [x3], x1 .endm load_add_store v16.8h, v17.8h, v18.8h, v19.8h, v20.8h, v21.8h, v22.8h, v23.8h, v16.8b, v17.8b load_add_store v24.8h, v25.8h, v26.8h, v27.8h, v28.8h, v29.8h, v30.8h, v31.8h, v16.8b, v17.8b .purgem load_add_store ret endfunc .endm itxfm16_1d_funcs idct itxfm16_1d_funcs iadst .macro itxfm_func16x16 txfm1, txfm2 function ff_vp9_\txfm1\()_\txfm2\()_16x16_add_neon, export=1 .ifc \txfm1\()_\txfm2,idct_idct cmp w3, #1 b.eq idct16x16_dc_add_neon .endif mov x15, x30 // iadst16 requires clobbering v8-v15, but idct16 doesn't need to. .ifnc \txfm1\()_\txfm2,idct_idct stp d14, d15, [sp, #-0x10]! stp d12, d13, [sp, #-0x10]! stp d10, d11, [sp, #-0x10]! stp d8, d9, [sp, #-0x10]! .endif sub sp, sp, #512 mov x4, x0 mov x5, x1 mov x6, x2 movrel x10, idct_coeffs .ifnc \txfm1\()_\txfm2,idct_idct movrel x11, iadst16_coeffs .endif .ifc \txfm1,idct ld1 {v0.8h,v1.8h}, [x10] .endif mov x9, #32 .irp i, 0, 8 add x0, sp, #(\i*32) .ifc \txfm1\()_\txfm2,idct_idct .if \i == 8 cmp w3, #38 b.le 1f .endif .endif mov x1, #\i add x2, x6, #(\i*2) bl \txfm1\()16_1d_8x16_pass1_neon .endr .ifc \txfm1\()_\txfm2,iadst_idct ld1 {v0.8h,v1.8h}, [x10] .endif .ifc \txfm1\()_\txfm2,idct_idct b 3f 1: // Set v24-v31 to zero, for the in-register passthrough of // coefficients to pass 2. Since we only do two slices, this can // only ever happen for the second slice. So we only need to store // zeros to the temp buffer for the second half of the buffer. // Move x0 to the second half, and use x9 == 32 as increment. add x0, x0, #16 .irp i, 24, 25, 26, 27, 28, 29, 30, 31 movi_v \i, .16b, #0 st1 {v24.8h}, [x0], x9 .endr 3: .endif .irp i, 0, 8 add x0, x4, #(\i) mov x1, x5 add x2, sp, #(\i*2) mov x3, #\i bl \txfm2\()16_1d_8x16_pass2_neon .endr add sp, sp, #512 .ifnc \txfm1\()_\txfm2,idct_idct ldp d8, d9, [sp], 0x10 ldp d10, d11, [sp], 0x10 ldp d12, d13, [sp], 0x10 ldp d14, d15, [sp], 0x10 .endif br x15 endfunc .endm itxfm_func16x16 idct, idct itxfm_func16x16 iadst, idct itxfm_func16x16 idct, iadst itxfm_func16x16 iadst, iadst function idct32x32_dc_add_neon movrel x4, idct_coeffs ld1 {v0.4h}, [x4] movi v1.4h, #0 ld1r {v2.4h}, [x2] smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 smull v2.4s, v2.4h, v0.h[0] rshrn v2.4h, v2.4s, #14 dup v2.8h, v2.h[0] st1 {v1.h}[0], [x2] srshr v0.8h, v2.8h, #6 mov x4, #32 1: // Loop to add the constant v0 into all 32x32 outputs ld1 {v1.16b,v2.16b}, [x0] uaddw v3.8h, v0.8h, v1.8b uaddw2 v4.8h, v0.8h, v1.16b uaddw v5.8h, v0.8h, v2.8b uaddw2 v6.8h, v0.8h, v2.16b sqxtun v3.8b, v3.8h sqxtun2 v3.16b, v4.8h sqxtun v4.8b, v5.8h sqxtun2 v4.16b, v6.8h st1 {v3.16b,v4.16b}, [x0], x1 subs x4, x4, #1 b.ne 1b ret endfunc .macro idct32_odd ld1 {v0.8h,v1.8h}, [x11] dmbutterfly v16, v31, v0.h[0], v0.h[1], v4, v5, v6, v7 // v16 = t16a, v31 = t31a dmbutterfly v24, v23, v0.h[2], v0.h[3], v4, v5, v6, v7 // v24 = t17a, v23 = t30a dmbutterfly v20, v27, v0.h[4], v0.h[5], v4, v5, v6, v7 // v20 = t18a, v27 = t29a dmbutterfly v28, v19, v0.h[6], v0.h[7], v4, v5, v6, v7 // v28 = t19a, v19 = t28a dmbutterfly v18, v29, v1.h[0], v1.h[1], v4, v5, v6, v7 // v18 = t20a, v29 = t27a dmbutterfly v26, v21, v1.h[2], v1.h[3], v4, v5, v6, v7 // v26 = t21a, v21 = t26a dmbutterfly v22, v25, v1.h[4], v1.h[5], v4, v5, v6, v7 // v22 = t22a, v25 = t25a dmbutterfly v30, v17, v1.h[6], v1.h[7], v4, v5, v6, v7 // v30 = t23a, v17 = t24a ld1 {v0.8h}, [x10] butterfly_8h v4, v24, v16, v24 // v4 = t16, v24 = t17 butterfly_8h v5, v20, v28, v20 // v5 = t19, v20 = t18 butterfly_8h v6, v26, v18, v26 // v6 = t20, v26 = t21 butterfly_8h v7, v22, v30, v22 // v7 = t23, v22 = t22 butterfly_8h v28, v25, v17, v25 // v28 = t24, v25 = t25 butterfly_8h v30, v21, v29, v21 // v30 = t27, v21 = t26 butterfly_8h v29, v23, v31, v23 // v29 = t31, v23 = t30 butterfly_8h v31, v27, v19, v27 // v31 = t28, v27 = t29 dmbutterfly v23, v24, v0.h[3], v0.h[4], v16, v17, v18, v19 // v23 = t17a, v24 = t30a dmbutterfly v27, v20, v0.h[3], v0.h[4], v16, v17, v18, v19, neg=1 // v27 = t29a, v20 = t18a dmbutterfly v21, v26, v0.h[5], v0.h[6], v16, v17, v18, v19 // v21 = t21a, v26 = t26a dmbutterfly v25, v22, v0.h[5], v0.h[6], v16, v17, v18, v19, neg=1 // v25 = t25a, v22 = t22a butterfly_8h v16, v5, v4, v5 // v16 = t16a, v5 = t19a butterfly_8h v17, v20, v23, v20 // v17 = t17, v20 = t18 butterfly_8h v18, v6, v7, v6 // v18 = t23a, v6 = t20a butterfly_8h v19, v21, v22, v21 // v19 = t22, v21 = t21 butterfly_8h v4, v28, v28, v30 // v4 = t24a, v28 = t27a butterfly_8h v23, v26, v25, v26 // v23 = t25, v26 = t26 butterfly_8h v7, v3, v29, v31 // v7 = t31a, v3 = t28a butterfly_8h v22, v27, v24, v27 // v22 = t30, v27 = t29 dmbutterfly v27, v20, v0.h[1], v0.h[2], v24, v25, v30, v31 // v27 = t18a, v20 = t29a dmbutterfly v3, v5, v0.h[1], v0.h[2], v24, v25, v30, v31 // v3 = t19, v5 = t28 dmbutterfly v28, v6, v0.h[1], v0.h[2], v24, v25, v30, v31, neg=1 // v28 = t27, v6 = t20 dmbutterfly v26, v21, v0.h[1], v0.h[2], v24, v25, v30, v31, neg=1 // v26 = t26a, v21 = t21a butterfly_8h v31, v24, v7, v4 // v31 = t31, v24 = t24 butterfly_8h v30, v25, v22, v23 // v30 = t30a, v25 = t25a butterfly_8h_r v23, v16, v16, v18 // v23 = t23, v16 = t16 butterfly_8h_r v22, v17, v17, v19 // v22 = t22a, v17 = t17a butterfly_8h v18, v21, v27, v21 // v18 = t18, v21 = t21 butterfly_8h_r v27, v28, v5, v28 // v27 = t27a, v28 = t28a butterfly_8h v29, v26, v20, v26 // v29 = t29, v26 = t26 butterfly_8h v19, v20, v3, v6 // v19 = t19a, v20 = t20 dmbutterfly0 v27, v20, v27, v20, v2, v3, v4, v5, v6, v7 // v27 = t27, v20 = t20 dmbutterfly0 v26, v21, v26, v21, v2, v3, v4, v5, v6, v7 // v26 = t26a, v21 = t21a dmbutterfly0 v25, v22, v25, v22, v2, v3, v4, v5, v6, v7 // v25 = t25, v22 = t22 dmbutterfly0 v24, v23, v24, v23, v2, v3, v4, v5, v6, v7 // v24 = t24a, v23 = t23a .endm // Do an 32-point IDCT of a 8x32 slice out of a 32x32 matrix. // The 32-point IDCT can be decomposed into two 16-point IDCTs; // a normal IDCT16 with every other input component (the even ones, with // each output written twice), followed by a separate 16-point IDCT // of the odd inputs, added/subtracted onto the outputs of the first idct16. // x0 = dst (temp buffer) // x1 = unused // x2 = src // x9 = double input stride // x10 = idct_coeffs // x11 = idct_coeffs + 32 function idct32_1d_8x32_pass1_neon ld1 {v0.8h,v1.8h}, [x10] movi v4.8h, #0 // v16 = IN(0), v17 = IN(2) ... v31 = IN(30) .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ld1 {v\i\().8h}, [x2] st1 {v4.8h}, [x2], x9 .endr idct16 // Do two 8x8 transposes. Originally, v16-v31 contain the // 16 rows. Afterwards, v16-v23 and v24-v31 contain the // two transposed 8x8 blocks. transpose_8x8H v16, v17, v18, v19, v20, v21, v22, v23, v2, v3 transpose_8x8H v24, v25, v26, v27, v28, v29, v30, v31, v2, v3 // Store the registers a, b horizontally, followed by the // same registers b, a mirrored. .macro store_rev a, b // There's no rev128 instruction, but we reverse each 64 bit // half, and then flip them using an ext with 8 bytes offset. rev64 v1.8h, v\b\().8h st1 {v\a\().8h}, [x0], #16 rev64 v0.8h, v\a\().8h ext v1.16b, v1.16b, v1.16b, #8 st1 {v\b\().8h}, [x0], #16 ext v0.16b, v0.16b, v0.16b, #8 st1 {v1.8h}, [x0], #16 st1 {v0.8h}, [x0], #16 .endm store_rev 16, 24 store_rev 17, 25 store_rev 18, 26 store_rev 19, 27 store_rev 20, 28 store_rev 21, 29 store_rev 22, 30 store_rev 23, 31 sub x0, x0, #512 .purgem store_rev // Move x2 back to the start of the input, and move // to the first odd row sub x2, x2, x9, lsl #4 add x2, x2, #64 movi v4.8h, #0 // v16 = IN(1), v17 = IN(3) ... v31 = IN(31) .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ld1 {v\i\().8h}, [x2] st1 {v4.8h}, [x2], x9 .endr idct32_odd transpose_8x8H v31, v30, v29, v28, v27, v26, v25, v24, v2, v3 transpose_8x8H v23, v22, v21, v20, v19, v18, v17, v16, v2, v3 // Store the registers a, b horizontally, // adding into the output first, and the mirrored, // subtracted from the output. .macro store_rev a, b ld1 {v4.8h}, [x0] rev64 v1.8h, v\b\().8h add v4.8h, v4.8h, v\a\().8h rev64 v0.8h, v\a\().8h st1 {v4.8h}, [x0], #16 ext v1.16b, v1.16b, v1.16b, #8 ld1 {v5.8h}, [x0] ext v0.16b, v0.16b, v0.16b, #8 add v5.8h, v5.8h, v\b\().8h st1 {v5.8h}, [x0], #16 ld1 {v6.8h}, [x0] sub v6.8h, v6.8h, v1.8h st1 {v6.8h}, [x0], #16 ld1 {v7.8h}, [x0] sub v7.8h, v7.8h, v0.8h st1 {v7.8h}, [x0], #16 .endm store_rev 31, 23 store_rev 30, 22 store_rev 29, 21 store_rev 28, 20 store_rev 27, 19 store_rev 26, 18 store_rev 25, 17 store_rev 24, 16 .purgem store_rev ret endfunc // This is mostly the same as 8x32_pass1, but without the transpose, // and use the source as temp buffer between the two idct passes, and // add into the destination. // x0 = dst // x1 = dst stride // x2 = src (temp buffer) // x7 = negative double temp buffer stride // x9 = double temp buffer stride // x10 = idct_coeffs // x11 = idct_coeffs + 32 function idct32_1d_8x32_pass2_neon ld1 {v0.8h,v1.8h}, [x10] // v16 = IN(0), v17 = IN(2) ... v31 = IN(30) .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ld1 {v\i\().8h}, [x2], x9 .endr sub x2, x2, x9, lsl #4 idct16 .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 st1 {v\i\().8h}, [x2], x9 .endr sub x2, x2, x9, lsl #4 add x2, x2, #64 // v16 = IN(1), v17 = IN(3) ... v31 = IN(31) .irp i, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ld1 {v\i\().8h}, [x2], x9 .endr sub x2, x2, x9, lsl #4 sub x2, x2, #64 idct32_odd .macro load_acc_store a, b, c, d, neg=0 .if \neg == 0 ld1 {v4.8h}, [x2], x9 ld1 {v5.8h}, [x2], x9 add v4.8h, v4.8h, v\a\().8h ld1 {v6.8h}, [x2], x9 add v5.8h, v5.8h, v\b\().8h ld1 {v7.8h}, [x2], x9 add v6.8h, v6.8h, v\c\().8h add v7.8h, v7.8h, v\d\().8h .else ld1 {v4.8h}, [x2], x7 ld1 {v5.8h}, [x2], x7 sub v4.8h, v4.8h, v\a\().8h ld1 {v6.8h}, [x2], x7 sub v5.8h, v5.8h, v\b\().8h ld1 {v7.8h}, [x2], x7 sub v6.8h, v6.8h, v\c\().8h sub v7.8h, v7.8h, v\d\().8h .endif ld1 {v0.8b}, [x0], x1 ld1 {v1.8b}, [x0], x1 srshr v4.8h, v4.8h, #6 ld1 {v2.8b}, [x0], x1 srshr v5.8h, v5.8h, #6 uaddw v4.8h, v4.8h, v0.8b ld1 {v3.8b}, [x0], x1 srshr v6.8h, v6.8h, #6 uaddw v5.8h, v5.8h, v1.8b srshr v7.8h, v7.8h, #6 sub x0, x0, x1, lsl #2 uaddw v6.8h, v6.8h, v2.8b sqxtun v4.8b, v4.8h uaddw v7.8h, v7.8h, v3.8b sqxtun v5.8b, v5.8h st1 {v4.8b}, [x0], x1 sqxtun v6.8b, v6.8h st1 {v5.8b}, [x0], x1 sqxtun v7.8b, v7.8h st1 {v6.8b}, [x0], x1 st1 {v7.8b}, [x0], x1 .endm load_acc_store 31, 30, 29, 28 load_acc_store 27, 26, 25, 24 load_acc_store 23, 22, 21, 20 load_acc_store 19, 18, 17, 16 sub x2, x2, x9 load_acc_store 16, 17, 18, 19, 1 load_acc_store 20, 21, 22, 23, 1 load_acc_store 24, 25, 26, 27, 1 load_acc_store 28, 29, 30, 31, 1 .purgem load_acc_store ret endfunc const min_eob_idct_idct_32, align=4 .short 0, 34, 135, 336 endconst function ff_vp9_idct_idct_32x32_add_neon, export=1 cmp w3, #1 b.eq idct32x32_dc_add_neon movrel x10, idct_coeffs add x11, x10, #32 movrel x12, min_eob_idct_idct_32, 2 mov x15, x30 stp d14, d15, [sp, #-0x10]! stp d12, d13, [sp, #-0x10]! stp d10, d11, [sp, #-0x10]! stp d8, d9, [sp, #-0x10]! sub sp, sp, #2048 mov x4, x0 mov x5, x1 mov x6, x2 // Double stride of the input, since we only read every other line mov x9, #128 neg x7, x9 .irp i, 0, 8, 16, 24 add x0, sp, #(\i*64) .if \i > 0 ldrh w1, [x12], #2 cmp w3, w1 mov x1, #(32 - \i)/4 b.le 1f .endif add x2, x6, #(\i*2) bl idct32_1d_8x32_pass1_neon .endr b 3f 1: // Write zeros to the temp buffer for pass 2 movi v16.8h, #0 movi v17.8h, #0 movi v18.8h, #0 movi v19.8h, #0 2: subs x1, x1, #1 .rept 4 st1 {v16.8h-v19.8h}, [x0], #64 .endr b.ne 2b 3: .irp i, 0, 8, 16, 24 add x0, x4, #(\i) mov x1, x5 add x2, sp, #(\i*2) bl idct32_1d_8x32_pass2_neon .endr add sp, sp, #2048 ldp d8, d9, [sp], 0x10 ldp d10, d11, [sp], 0x10 ldp d12, d13, [sp], 0x10 ldp d14, d15, [sp], 0x10 br x15 endfunc