| /* |
| * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/arm/asm.S" |
| |
| .macro bflies d0, d1, r0, r1 |
| vrev64.32 \r0, \d1 @ t5, t6, t1, t2 |
| vhsub.s16 \r1, \d1, \r0 @ t1-t5, t2-t6, t5-t1, t6-t2 |
| vhadd.s16 \r0, \d1, \r0 @ t1+t5, t2+t6, t5+t1, t6+t2 |
| vext.16 \r1, \r1, \r1, #1 @ t2-t6, t5-t1, t6-t2, t1-t5 |
| vtrn.32 \r0, \r1 @ t1+t5, t2+t6, t2-t6, t5-t1 |
| @ t5, t6, t4, t3 |
| vhsub.s16 \d1, \d0, \r0 |
| vhadd.s16 \d0, \d0, \r0 |
| .endm |
| |
| .macro transform01 q0, q1, d3, c0, c1, r0, w0, w1 |
| vrev32.16 \r0, \d3 |
| vmull.s16 \w0, \d3, \c0 |
| vmlal.s16 \w0, \r0, \c1 |
| vshrn.s32 \d3, \w0, #15 |
| bflies \q0, \q1, \w0, \w1 |
| .endm |
| |
| .macro transform2 d0, d1, d2, d3, q0, q1, c0, c1, c2, c3, \ |
| r0, r1, w0, w1 |
| vrev32.16 \r0, \d1 |
| vrev32.16 \r1, \d3 |
| vmull.s16 \w0, \d1, \c0 |
| vmlal.s16 \w0, \r0, \c1 |
| vmull.s16 \w1, \d3, \c2 |
| vmlal.s16 \w1, \r1, \c3 |
| vshrn.s32 \d1, \w0, #15 |
| vshrn.s32 \d3, \w1, #15 |
| bflies \q0, \q1, \w0, \w1 |
| .endm |
| |
| .macro fft4 d0, d1, r0, r1 |
| vhsub.s16 \r0, \d0, \d1 @ t3, t4, t8, t7 |
| vhsub.s16 \r1, \d1, \d0 |
| vhadd.s16 \d0, \d0, \d1 @ t1, t2, t6, t5 |
| vmov.i64 \d1, #0xffff00000000 |
| vbit \r0, \r1, \d1 |
| vrev64.16 \r1, \r0 @ t7, t8, t4, t3 |
| vtrn.32 \r0, \r1 @ t3, t4, t7, t8 |
| vtrn.32 \d0, \r0 @ t1, t2, t3, t4, t6, t5, t8, t7 |
| vhsub.s16 \d1, \d0, \r0 @ r2, i2, r3, i1 |
| vhadd.s16 \d0, \d0, \r0 @ r0, i0, r1, i3 |
| .endm |
| |
| .macro fft8 d0, d1, d2, d3, q0, q1, c0, c1, r0, r1, w0, w1 |
| fft4 \d0, \d1, \r0, \r1 |
| vtrn.32 \d0, \d1 @ z0, z2, z1, z3 |
| vhadd.s16 \r0, \d2, \d3 @ t1, t2, t3, t4 |
| vhsub.s16 \d3, \d2, \d3 @ z5, z7 |
| vmov \d2, \r0 |
| transform01 \q0, \q1, \d3, \c0, \c1, \r0, \w0, \w1 |
| .endm |
| |
| function fft4_neon |
| vld1.16 {d0-d1}, [r0] |
| fft4 d0, d1, d2, d3 |
| vst1.16 {d0-d1}, [r0] |
| bx lr |
| endfunc |
| |
| function fft8_neon |
| vld1.16 {d0-d3}, [r0,:128] |
| movrel r1, coefs |
| vld1.16 {d30}, [r1,:64] |
| vdup.16 d31, d30[0] |
| fft8 d0, d1, d2, d3, q0, q1, d31, d30, d20, d21, q8, q9 |
| vtrn.32 d0, d1 |
| vtrn.32 d2, d3 |
| vst1.16 {d0-d3}, [r0,:128] |
| bx lr |
| endfunc |
| |
| function fft16_neon |
| vld1.16 {d0-d3}, [r0,:128]! |
| vld1.16 {d4-d7}, [r0,:128] |
| movrel r1, coefs |
| sub r0, r0, #32 |
| vld1.16 {d28-d31},[r1,:128] |
| vdup.16 d31, d28[0] |
| fft8 d0, d1, d2, d3, q0, q1, d31, d28, d20, d21, q8, q9 |
| vswp d5, d6 |
| fft4 q2, q3, q8, q9 |
| vswp d5, d6 |
| vtrn.32 q0, q1 @ z0, z4, z2, z6, z1, z5, z3, z7 |
| vtrn.32 q2, q3 @ z8, z12,z10,z14,z9, z13,z11,z15 |
| vswp d1, d2 |
| vdup.16 d31, d28[0] |
| transform01 q0, q2, d5, d31, d28, d20, q8, q9 |
| vdup.16 d26, d29[0] |
| vdup.16 d27, d30[0] |
| transform2 d2, d6, d3, d7, q1, q3, d26, d30, d27, d29, \ |
| d20, d21, q8, q9 |
| vtrn.32 q0, q1 |
| vtrn.32 q2, q3 |
| vst1.16 {d0-d3}, [r0,:128]! |
| vst1.16 {d4-d7}, [r0,:128] |
| bx lr |
| endfunc |
| |
| function fft_pass_neon |
| push {r4,lr} |
| movrel lr, coefs + 24 |
| vld1.16 {d30}, [lr,:64] |
| lsl r12, r2, #3 |
| vmov d31, d30 |
| add r3, r1, r2, lsl #2 |
| mov lr, #-8 |
| sub r3, r3, #2 |
| mov r4, r0 |
| vld1.16 {d27[]}, [r3,:16] |
| sub r3, r3, #6 |
| vld1.16 {q0}, [r4,:128], r12 |
| vld1.16 {q1}, [r4,:128], r12 |
| vld1.16 {q2}, [r4,:128], r12 |
| vld1.16 {q3}, [r4,:128], r12 |
| vld1.16 {d28}, [r1,:64]! |
| vld1.16 {d29}, [r3,:64], lr |
| vswp d1, d2 |
| vswp d5, d6 |
| vtrn.32 d0, d1 |
| vtrn.32 d4, d5 |
| vdup.16 d25, d28[1] |
| vmul.s16 d27, d27, d31 |
| transform01 q0, q2, d5, d25, d27, d20, q8, q9 |
| b 2f |
| 1: |
| mov r4, r0 |
| vdup.16 d26, d29[0] |
| vld1.16 {q0}, [r4,:128], r12 |
| vld1.16 {q1}, [r4,:128], r12 |
| vld1.16 {q2}, [r4,:128], r12 |
| vld1.16 {q3}, [r4,:128], r12 |
| vld1.16 {d28}, [r1,:64]! |
| vld1.16 {d29}, [r3,:64], lr |
| vswp d1, d2 |
| vswp d5, d6 |
| vtrn.32 d0, d1 |
| vtrn.32 d4, d5 |
| vdup.16 d24, d28[0] |
| vdup.16 d25, d28[1] |
| vdup.16 d27, d29[3] |
| vmul.s16 q13, q13, q15 |
| transform2 d0, d4, d1, d5, q0, q2, d24, d26, d25, d27, \ |
| d16, d17, q9, q10 |
| 2: |
| vtrn.32 d2, d3 |
| vtrn.32 d6, d7 |
| vdup.16 d24, d28[2] |
| vdup.16 d26, d29[2] |
| vdup.16 d25, d28[3] |
| vdup.16 d27, d29[1] |
| vmul.s16 q13, q13, q15 |
| transform2 d2, d6, d3, d7, q1, q3, d24, d26, d25, d27, \ |
| d16, d17, q9, q10 |
| vtrn.32 d0, d1 |
| vtrn.32 d2, d3 |
| vtrn.32 d4, d5 |
| vtrn.32 d6, d7 |
| vswp d1, d2 |
| vswp d5, d6 |
| mov r4, r0 |
| vst1.16 {q0}, [r4,:128], r12 |
| vst1.16 {q1}, [r4,:128], r12 |
| vst1.16 {q2}, [r4,:128], r12 |
| vst1.16 {q3}, [r4,:128], r12 |
| add r0, r0, #16 |
| subs r2, r2, #2 |
| bgt 1b |
| pop {r4,pc} |
| endfunc |
| |
| #define F_SQRT1_2 23170 |
| #define F_COS_16_1 30274 |
| #define F_COS_16_3 12540 |
| |
| const coefs, align=4 |
| .short F_SQRT1_2, -F_SQRT1_2, -F_SQRT1_2, F_SQRT1_2 |
| .short F_COS_16_1,-F_COS_16_1,-F_COS_16_1, F_COS_16_1 |
| .short F_COS_16_3,-F_COS_16_3,-F_COS_16_3, F_COS_16_3 |
| .short 1, -1, -1, 1 |
| endconst |
| |
| .macro def_fft n, n2, n4 |
| function fft\n\()_neon |
| push {r4, lr} |
| mov r4, r0 |
| bl fft\n2\()_neon |
| add r0, r4, #\n4*2*4 |
| bl fft\n4\()_neon |
| add r0, r4, #\n4*3*4 |
| bl fft\n4\()_neon |
| mov r0, r4 |
| pop {r4, lr} |
| movrelx r1, X(ff_cos_\n\()_fixed) |
| mov r2, #\n4/2 |
| b fft_pass_neon |
| endfunc |
| .endm |
| |
| def_fft 32, 16, 8 |
| def_fft 64, 32, 16 |
| def_fft 128, 64, 32 |
| def_fft 256, 128, 64 |
| def_fft 512, 256, 128 |
| def_fft 1024, 512, 256 |
| def_fft 2048, 1024, 512 |
| def_fft 4096, 2048, 1024 |
| def_fft 8192, 4096, 2048 |
| def_fft 16384, 8192, 4096 |
| def_fft 32768, 16384, 8192 |
| def_fft 65536, 32768, 16384 |
| |
| function ff_fft_fixed_calc_neon, export=1 |
| ldr r2, [r0] |
| sub r2, r2, #2 |
| movrel r3, fft_fixed_tab_neon |
| ldr r3, [r3, r2, lsl #2] |
| mov r0, r1 |
| bx r3 |
| endfunc |
| |
| const fft_fixed_tab_neon, relocate=1 |
| .word fft4_neon |
| .word fft8_neon |
| .word fft16_neon |
| .word fft32_neon |
| .word fft64_neon |
| .word fft128_neon |
| .word fft256_neon |
| .word fft512_neon |
| .word fft1024_neon |
| .word fft2048_neon |
| .word fft4096_neon |
| .word fft8192_neon |
| .word fft16384_neon |
| .word fft32768_neon |
| .word fft65536_neon |
| endconst |
