1cabdff1aSopenharmony_ci/* 2cabdff1aSopenharmony_ci * ARM NEON optimised MDCT 3cabdff1aSopenharmony_ci * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> 4cabdff1aSopenharmony_ci * 5cabdff1aSopenharmony_ci * This file is part of FFmpeg. 6cabdff1aSopenharmony_ci * 7cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or 8cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public 9cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either 10cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version. 11cabdff1aSopenharmony_ci * 12cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful, 13cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of 14cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15cabdff1aSopenharmony_ci * Lesser General Public License for more details. 16cabdff1aSopenharmony_ci * 17cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public 18cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software 19cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20cabdff1aSopenharmony_ci */ 21cabdff1aSopenharmony_ci 22cabdff1aSopenharmony_ci#include "libavutil/arm/asm.S" 23cabdff1aSopenharmony_ci 24cabdff1aSopenharmony_ci#define ff_fft_calc_neon X(ff_fft_calc_neon) 25cabdff1aSopenharmony_ci 26cabdff1aSopenharmony_cifunction ff_imdct_half_neon, export=1 27cabdff1aSopenharmony_ci push {r4-r8,lr} 28cabdff1aSopenharmony_ci 29cabdff1aSopenharmony_ci mov r12, #1 30cabdff1aSopenharmony_ci ldr lr, [r0, #20] @ mdct_bits 31cabdff1aSopenharmony_ci ldr r4, [r0, #24] @ tcos 32cabdff1aSopenharmony_ci ldr r3, [r0, #8] @ revtab 33cabdff1aSopenharmony_ci lsl r12, r12, lr @ n = 1 << nbits 34cabdff1aSopenharmony_ci lsr lr, r12, #2 @ n4 = n >> 2 35cabdff1aSopenharmony_ci add r7, r2, r12, lsl #1 36cabdff1aSopenharmony_ci mov r12, #-16 37cabdff1aSopenharmony_ci sub r7, r7, #16 38cabdff1aSopenharmony_ci 39cabdff1aSopenharmony_ci vld2.32 {d16-d17},[r7,:128],r12 @ d16=x,n1 d17=x,n0 40cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r2,:128]! @ d0 =m0,x d1 =m1,x 41cabdff1aSopenharmony_ci vrev64.32 d17, d17 42cabdff1aSopenharmony_ci vld2.32 {d2,d3}, [r4,:128]! @ d2=c0,c1 d3=s0,s2 43cabdff1aSopenharmony_ci vmul.f32 d6, d17, d2 44cabdff1aSopenharmony_ci vmul.f32 d7, d0, d2 45cabdff1aSopenharmony_ci1: 46cabdff1aSopenharmony_ci subs lr, lr, #2 47cabdff1aSopenharmony_ci ldr r6, [r3], #4 48cabdff1aSopenharmony_ci vmul.f32 d4, d0, d3 49cabdff1aSopenharmony_ci vmul.f32 d5, d17, d3 50cabdff1aSopenharmony_ci vsub.f32 d4, d6, d4 51cabdff1aSopenharmony_ci vadd.f32 d5, d5, d7 52cabdff1aSopenharmony_ci uxth r8, r6, ror #16 53cabdff1aSopenharmony_ci uxth r6, r6 54cabdff1aSopenharmony_ci add r8, r1, r8, lsl #3 55cabdff1aSopenharmony_ci add r6, r1, r6, lsl #3 56cabdff1aSopenharmony_ci beq 1f 57cabdff1aSopenharmony_ci vld2.32 {d16-d17},[r7,:128],r12 58cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r2,:128]! 59cabdff1aSopenharmony_ci vrev64.32 d17, d17 60cabdff1aSopenharmony_ci vld2.32 {d2,d3}, [r4,:128]! @ d2=c0,c1 d3=s0,s2 61cabdff1aSopenharmony_ci vmul.f32 d6, d17, d2 62cabdff1aSopenharmony_ci vmul.f32 d7, d0, d2 63cabdff1aSopenharmony_ci vst2.32 {d4[0],d5[0]}, [r6,:64] 64cabdff1aSopenharmony_ci vst2.32 {d4[1],d5[1]}, [r8,:64] 65cabdff1aSopenharmony_ci b 1b 66cabdff1aSopenharmony_ci1: 67cabdff1aSopenharmony_ci vst2.32 {d4[0],d5[0]}, [r6,:64] 68cabdff1aSopenharmony_ci vst2.32 {d4[1],d5[1]}, [r8,:64] 69cabdff1aSopenharmony_ci 70cabdff1aSopenharmony_ci mov r4, r0 71cabdff1aSopenharmony_ci mov r6, r1 72cabdff1aSopenharmony_ci bl ff_fft_calc_neon 73cabdff1aSopenharmony_ci 74cabdff1aSopenharmony_ci mov r12, #1 75cabdff1aSopenharmony_ci ldr lr, [r4, #20] @ mdct_bits 76cabdff1aSopenharmony_ci ldr r4, [r4, #24] @ tcos 77cabdff1aSopenharmony_ci lsl r12, r12, lr @ n = 1 << nbits 78cabdff1aSopenharmony_ci lsr lr, r12, #3 @ n8 = n >> 3 79cabdff1aSopenharmony_ci 80cabdff1aSopenharmony_ci add r4, r4, lr, lsl #3 81cabdff1aSopenharmony_ci add r6, r6, lr, lsl #3 82cabdff1aSopenharmony_ci sub r1, r4, #16 83cabdff1aSopenharmony_ci sub r3, r6, #16 84cabdff1aSopenharmony_ci 85cabdff1aSopenharmony_ci mov r7, #-16 86cabdff1aSopenharmony_ci mov r8, r6 87cabdff1aSopenharmony_ci mov r0, r3 88cabdff1aSopenharmony_ci 89cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r3,:128], r7 @ d0 =i1,r1 d1 =i0,r0 90cabdff1aSopenharmony_ci vld2.32 {d20-d21},[r6,:128]! @ d20=i2,r2 d21=i3,r3 91cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r1,:128], r7 @ d16=c1,c0 d18=s1,s0 92cabdff1aSopenharmony_ci1: 93cabdff1aSopenharmony_ci subs lr, lr, #2 94cabdff1aSopenharmony_ci vmul.f32 d7, d0, d18 95cabdff1aSopenharmony_ci vld2.32 {d17,d19},[r4,:128]! @ d17=c2,c3 d19=s2,s3 96cabdff1aSopenharmony_ci vmul.f32 d4, d1, d18 97cabdff1aSopenharmony_ci vmul.f32 d5, d21, d19 98cabdff1aSopenharmony_ci vmul.f32 d6, d20, d19 99cabdff1aSopenharmony_ci vmul.f32 d22, d1, d16 100cabdff1aSopenharmony_ci vmul.f32 d23, d21, d17 101cabdff1aSopenharmony_ci vmul.f32 d24, d0, d16 102cabdff1aSopenharmony_ci vmul.f32 d25, d20, d17 103cabdff1aSopenharmony_ci vadd.f32 d7, d7, d22 104cabdff1aSopenharmony_ci vadd.f32 d6, d6, d23 105cabdff1aSopenharmony_ci vsub.f32 d4, d4, d24 106cabdff1aSopenharmony_ci vsub.f32 d5, d5, d25 107cabdff1aSopenharmony_ci beq 1f 108cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r3,:128], r7 109cabdff1aSopenharmony_ci vld2.32 {d20-d21},[r6,:128]! 110cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r1,:128], r7 @ d16=c1,c0 d18=s1,s0 111cabdff1aSopenharmony_ci vrev64.32 q3, q3 112cabdff1aSopenharmony_ci vst2.32 {d4,d6}, [r0,:128], r7 113cabdff1aSopenharmony_ci vst2.32 {d5,d7}, [r8,:128]! 114cabdff1aSopenharmony_ci b 1b 115cabdff1aSopenharmony_ci1: 116cabdff1aSopenharmony_ci vrev64.32 q3, q3 117cabdff1aSopenharmony_ci vst2.32 {d4,d6}, [r0,:128] 118cabdff1aSopenharmony_ci vst2.32 {d5,d7}, [r8,:128] 119cabdff1aSopenharmony_ci 120cabdff1aSopenharmony_ci pop {r4-r8,pc} 121cabdff1aSopenharmony_ciendfunc 122cabdff1aSopenharmony_ci 123cabdff1aSopenharmony_cifunction ff_imdct_calc_neon, export=1 124cabdff1aSopenharmony_ci push {r4-r6,lr} 125cabdff1aSopenharmony_ci 126cabdff1aSopenharmony_ci ldr r3, [r0, #20] 127cabdff1aSopenharmony_ci mov r4, #1 128cabdff1aSopenharmony_ci mov r5, r1 129cabdff1aSopenharmony_ci lsl r4, r4, r3 130cabdff1aSopenharmony_ci add r1, r1, r4 131cabdff1aSopenharmony_ci 132cabdff1aSopenharmony_ci bl X(ff_imdct_half_neon) 133cabdff1aSopenharmony_ci 134cabdff1aSopenharmony_ci add r0, r5, r4, lsl #2 135cabdff1aSopenharmony_ci add r1, r5, r4, lsl #1 136cabdff1aSopenharmony_ci sub r0, r0, #8 137cabdff1aSopenharmony_ci sub r2, r1, #16 138cabdff1aSopenharmony_ci mov r3, #-16 139cabdff1aSopenharmony_ci mov r6, #-8 140cabdff1aSopenharmony_ci vmov.i32 d30, #1<<31 141cabdff1aSopenharmony_ci1: 142cabdff1aSopenharmony_ci vld1.32 {d0-d1}, [r2,:128], r3 143cabdff1aSopenharmony_ci pld [r0, #-16] 144cabdff1aSopenharmony_ci vrev64.32 q0, q0 145cabdff1aSopenharmony_ci vld1.32 {d2-d3}, [r1,:128]! 146cabdff1aSopenharmony_ci veor d4, d1, d30 147cabdff1aSopenharmony_ci pld [r2, #-16] 148cabdff1aSopenharmony_ci vrev64.32 q1, q1 149cabdff1aSopenharmony_ci veor d5, d0, d30 150cabdff1aSopenharmony_ci vst1.32 {d2}, [r0,:64], r6 151cabdff1aSopenharmony_ci vst1.32 {d3}, [r0,:64], r6 152cabdff1aSopenharmony_ci vst1.32 {d4-d5}, [r5,:128]! 153cabdff1aSopenharmony_ci subs r4, r4, #16 154cabdff1aSopenharmony_ci bgt 1b 155cabdff1aSopenharmony_ci 156cabdff1aSopenharmony_ci pop {r4-r6,pc} 157cabdff1aSopenharmony_ciendfunc 158cabdff1aSopenharmony_ci 159cabdff1aSopenharmony_cifunction ff_mdct_calc_neon, export=1 160cabdff1aSopenharmony_ci push {r4-r10,lr} 161cabdff1aSopenharmony_ci 162cabdff1aSopenharmony_ci mov r12, #1 163cabdff1aSopenharmony_ci ldr lr, [r0, #20] @ mdct_bits 164cabdff1aSopenharmony_ci ldr r4, [r0, #24] @ tcos 165cabdff1aSopenharmony_ci ldr r3, [r0, #8] @ revtab 166cabdff1aSopenharmony_ci lsl lr, r12, lr @ n = 1 << nbits 167cabdff1aSopenharmony_ci add r7, r2, lr @ in4u 168cabdff1aSopenharmony_ci sub r9, r7, #16 @ in4d 169cabdff1aSopenharmony_ci add r2, r7, lr, lsl #1 @ in3u 170cabdff1aSopenharmony_ci add r8, r9, lr, lsl #1 @ in3d 171cabdff1aSopenharmony_ci add r5, r4, lr, lsl #1 172cabdff1aSopenharmony_ci sub r5, r5, #16 173cabdff1aSopenharmony_ci sub r3, r3, #4 174cabdff1aSopenharmony_ci mov r12, #-16 175cabdff1aSopenharmony_ci 176cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r9,:128],r12 @ in0u0,in0u1 in4d1,in4d0 177cabdff1aSopenharmony_ci vld2.32 {d17,d19},[r8,:128],r12 @ in2u0,in2u1 in3d1,in3d0 178cabdff1aSopenharmony_ci vld2.32 {d0, d2}, [r7,:128]! @ in4u0,in4u1 in2d1,in2d0 179cabdff1aSopenharmony_ci vrev64.32 q9, q9 @ in4d0,in4d1 in3d0,in3d1 180cabdff1aSopenharmony_ci vld2.32 {d1, d3}, [r2,:128]! @ in3u0,in3u1 in1d1,in1d0 181cabdff1aSopenharmony_ci vsub.f32 d0, d18, d0 @ in4d-in4u I 182cabdff1aSopenharmony_ci vld2.32 {d20,d21},[r4,:128]! @ c0,c1 s0,s1 183cabdff1aSopenharmony_ci vrev64.32 q1, q1 @ in2d0,in2d1 in1d0,in1d1 184cabdff1aSopenharmony_ci vld2.32 {d30,d31},[r5,:128],r12 @ c2,c3 s2,s3 185cabdff1aSopenharmony_ci vadd.f32 d1, d1, d19 @ in3u+in3d -R 186cabdff1aSopenharmony_ci vsub.f32 d16, d16, d2 @ in0u-in2d R 187cabdff1aSopenharmony_ci vadd.f32 d17, d17, d3 @ in2u+in1d -I 188cabdff1aSopenharmony_ci1: 189cabdff1aSopenharmony_ci vmul.f32 d7, d0, d21 @ I*s 190cabdff1aSopenharmony_ciA ldr r10, [r3, lr, lsr #1] 191cabdff1aSopenharmony_ciT lsr r10, lr, #1 192cabdff1aSopenharmony_ciT ldr r10, [r3, r10] 193cabdff1aSopenharmony_ci vmul.f32 d6, d1, d20 @ -R*c 194cabdff1aSopenharmony_ci ldr r6, [r3, #4]! 195cabdff1aSopenharmony_ci vmul.f32 d4, d1, d21 @ -R*s 196cabdff1aSopenharmony_ci vmul.f32 d5, d0, d20 @ I*c 197cabdff1aSopenharmony_ci vmul.f32 d24, d16, d30 @ R*c 198cabdff1aSopenharmony_ci vmul.f32 d25, d17, d31 @ -I*s 199cabdff1aSopenharmony_ci vmul.f32 d22, d16, d31 @ R*s 200cabdff1aSopenharmony_ci vmul.f32 d23, d17, d30 @ I*c 201cabdff1aSopenharmony_ci subs lr, lr, #16 202cabdff1aSopenharmony_ci vsub.f32 d6, d6, d7 @ -R*c-I*s 203cabdff1aSopenharmony_ci vadd.f32 d7, d4, d5 @ -R*s+I*c 204cabdff1aSopenharmony_ci vsub.f32 d24, d25, d24 @ I*s-R*c 205cabdff1aSopenharmony_ci vadd.f32 d25, d22, d23 @ R*s-I*c 206cabdff1aSopenharmony_ci beq 1f 207cabdff1aSopenharmony_ci mov r12, #-16 208cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r9,:128],r12 @ in0u0,in0u1 in4d1,in4d0 209cabdff1aSopenharmony_ci vld2.32 {d17,d19},[r8,:128],r12 @ in2u0,in2u1 in3d1,in3d0 210cabdff1aSopenharmony_ci vneg.f32 d7, d7 @ R*s-I*c 211cabdff1aSopenharmony_ci vld2.32 {d0, d2}, [r7,:128]! @ in4u0,in4u1 in2d1,in2d0 212cabdff1aSopenharmony_ci vrev64.32 q9, q9 @ in4d0,in4d1 in3d0,in3d1 213cabdff1aSopenharmony_ci vld2.32 {d1, d3}, [r2,:128]! @ in3u0,in3u1 in1d1,in1d0 214cabdff1aSopenharmony_ci vsub.f32 d0, d18, d0 @ in4d-in4u I 215cabdff1aSopenharmony_ci vld2.32 {d20,d21},[r4,:128]! @ c0,c1 s0,s1 216cabdff1aSopenharmony_ci vrev64.32 q1, q1 @ in2d0,in2d1 in1d0,in1d1 217cabdff1aSopenharmony_ci vld2.32 {d30,d31},[r5,:128],r12 @ c2,c3 s2,s3 218cabdff1aSopenharmony_ci vadd.f32 d1, d1, d19 @ in3u+in3d -R 219cabdff1aSopenharmony_ci vsub.f32 d16, d16, d2 @ in0u-in2d R 220cabdff1aSopenharmony_ci vadd.f32 d17, d17, d3 @ in2u+in1d -I 221cabdff1aSopenharmony_ci uxth r12, r6, ror #16 222cabdff1aSopenharmony_ci uxth r6, r6 223cabdff1aSopenharmony_ci add r12, r1, r12, lsl #3 224cabdff1aSopenharmony_ci add r6, r1, r6, lsl #3 225cabdff1aSopenharmony_ci vst2.32 {d6[0],d7[0]}, [r6,:64] 226cabdff1aSopenharmony_ci vst2.32 {d6[1],d7[1]}, [r12,:64] 227cabdff1aSopenharmony_ci uxth r6, r10, ror #16 228cabdff1aSopenharmony_ci uxth r10, r10 229cabdff1aSopenharmony_ci add r6 , r1, r6, lsl #3 230cabdff1aSopenharmony_ci add r10, r1, r10, lsl #3 231cabdff1aSopenharmony_ci vst2.32 {d24[0],d25[0]},[r10,:64] 232cabdff1aSopenharmony_ci vst2.32 {d24[1],d25[1]},[r6,:64] 233cabdff1aSopenharmony_ci b 1b 234cabdff1aSopenharmony_ci1: 235cabdff1aSopenharmony_ci vneg.f32 d7, d7 @ R*s-I*c 236cabdff1aSopenharmony_ci uxth r12, r6, ror #16 237cabdff1aSopenharmony_ci uxth r6, r6 238cabdff1aSopenharmony_ci add r12, r1, r12, lsl #3 239cabdff1aSopenharmony_ci add r6, r1, r6, lsl #3 240cabdff1aSopenharmony_ci vst2.32 {d6[0],d7[0]}, [r6,:64] 241cabdff1aSopenharmony_ci vst2.32 {d6[1],d7[1]}, [r12,:64] 242cabdff1aSopenharmony_ci uxth r6, r10, ror #16 243cabdff1aSopenharmony_ci uxth r10, r10 244cabdff1aSopenharmony_ci add r6 , r1, r6, lsl #3 245cabdff1aSopenharmony_ci add r10, r1, r10, lsl #3 246cabdff1aSopenharmony_ci vst2.32 {d24[0],d25[0]},[r10,:64] 247cabdff1aSopenharmony_ci vst2.32 {d24[1],d25[1]},[r6,:64] 248cabdff1aSopenharmony_ci 249cabdff1aSopenharmony_ci mov r4, r0 250cabdff1aSopenharmony_ci mov r6, r1 251cabdff1aSopenharmony_ci bl ff_fft_calc_neon 252cabdff1aSopenharmony_ci 253cabdff1aSopenharmony_ci mov r12, #1 254cabdff1aSopenharmony_ci ldr lr, [r4, #20] @ mdct_bits 255cabdff1aSopenharmony_ci ldr r4, [r4, #24] @ tcos 256cabdff1aSopenharmony_ci lsl r12, r12, lr @ n = 1 << nbits 257cabdff1aSopenharmony_ci lsr lr, r12, #3 @ n8 = n >> 3 258cabdff1aSopenharmony_ci 259cabdff1aSopenharmony_ci add r4, r4, lr, lsl #3 260cabdff1aSopenharmony_ci add r6, r6, lr, lsl #3 261cabdff1aSopenharmony_ci sub r1, r4, #16 262cabdff1aSopenharmony_ci sub r3, r6, #16 263cabdff1aSopenharmony_ci 264cabdff1aSopenharmony_ci mov r7, #-16 265cabdff1aSopenharmony_ci mov r8, r6 266cabdff1aSopenharmony_ci mov r0, r3 267cabdff1aSopenharmony_ci 268cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r3,:128], r7 @ d0 =r1,i1 d1 =r0,i0 269cabdff1aSopenharmony_ci vld2.32 {d20-d21},[r6,:128]! @ d20=r2,i2 d21=r3,i3 270cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r1,:128], r7 @ c1,c0 s1,s0 271cabdff1aSopenharmony_ci1: 272cabdff1aSopenharmony_ci subs lr, lr, #2 273cabdff1aSopenharmony_ci vmul.f32 d7, d0, d18 @ r1*s1,r0*s0 274cabdff1aSopenharmony_ci vld2.32 {d17,d19},[r4,:128]! @ c2,c3 s2,s3 275cabdff1aSopenharmony_ci vmul.f32 d4, d1, d18 @ i1*s1,i0*s0 276cabdff1aSopenharmony_ci vmul.f32 d5, d21, d19 @ i2*s2,i3*s3 277cabdff1aSopenharmony_ci vmul.f32 d6, d20, d19 @ r2*s2,r3*s3 278cabdff1aSopenharmony_ci vmul.f32 d24, d0, d16 @ r1*c1,r0*c0 279cabdff1aSopenharmony_ci vmul.f32 d25, d20, d17 @ r2*c2,r3*c3 280cabdff1aSopenharmony_ci vmul.f32 d22, d21, d17 @ i2*c2,i3*c3 281cabdff1aSopenharmony_ci vmul.f32 d23, d1, d16 @ i1*c1,i0*c0 282cabdff1aSopenharmony_ci vadd.f32 d4, d4, d24 @ i1*s1+r1*c1,i0*s0+r0*c0 283cabdff1aSopenharmony_ci vadd.f32 d5, d5, d25 @ i2*s2+r2*c2,i3*s3+r3*c3 284cabdff1aSopenharmony_ci vsub.f32 d6, d22, d6 @ i2*c2-r2*s2,i3*c3-r3*s3 285cabdff1aSopenharmony_ci vsub.f32 d7, d23, d7 @ i1*c1-r1*s1,i0*c0-r0*s0 286cabdff1aSopenharmony_ci vneg.f32 q2, q2 287cabdff1aSopenharmony_ci beq 1f 288cabdff1aSopenharmony_ci vld2.32 {d0-d1}, [r3,:128], r7 289cabdff1aSopenharmony_ci vld2.32 {d20-d21},[r6,:128]! 290cabdff1aSopenharmony_ci vld2.32 {d16,d18},[r1,:128], r7 @ c1,c0 s1,s0 291cabdff1aSopenharmony_ci vrev64.32 q3, q3 292cabdff1aSopenharmony_ci vst2.32 {d4,d6}, [r0,:128], r7 293cabdff1aSopenharmony_ci vst2.32 {d5,d7}, [r8,:128]! 294cabdff1aSopenharmony_ci b 1b 295cabdff1aSopenharmony_ci1: 296cabdff1aSopenharmony_ci vrev64.32 q3, q3 297cabdff1aSopenharmony_ci vst2.32 {d4,d6}, [r0,:128] 298cabdff1aSopenharmony_ci vst2.32 {d5,d7}, [r8,:128] 299cabdff1aSopenharmony_ci 300cabdff1aSopenharmony_ci pop {r4-r10,pc} 301cabdff1aSopenharmony_ciendfunc 302