[FFmpeg-devel] [PATCH 1/2] imdct15: remove the AArch64 assembly
Rostislav Pehlivanov
atomnuker at gmail.com
Wed Jan 4 12:16:27 EET 2017
Prep work for the next commit, which will add a new FFT algorithm
which makes the iMDCT over 3x faster than it is currently (standalone,
the FFT is with some framesizes over 10x faster).
The new FFT algorithm uses the already thouroughly SIMD'd power of two
FFT which already has SIMD for AArch64, so users of that platform will
still see an improvement.
The previous FFT+SIMD was barely 2.5x faster than the C versions on these
platforms.
Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>
---
libavcodec/aarch64/Makefile | 2 -
libavcodec/aarch64/imdct15_init.c | 46 ---
libavcodec/aarch64/imdct15_neon.S | 647 --------------------------------------
libavcodec/imdct15.c | 3 -
libavcodec/imdct15.h | 3 -
5 files changed, 701 deletions(-)
delete mode 100644 libavcodec/aarch64/imdct15_init.c
delete mode 100644 libavcodec/aarch64/imdct15_neon.S
diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
index b7bb898713..5593863a75 100644
--- a/libavcodec/aarch64/Makefile
+++ b/libavcodec/aarch64/Makefile
@@ -6,7 +6,6 @@ OBJS-$(CONFIG_H264DSP) += aarch64/h264dsp_init_aarch64.o
OBJS-$(CONFIG_H264PRED) += aarch64/h264pred_init.o
OBJS-$(CONFIG_H264QPEL) += aarch64/h264qpel_init_aarch64.o
OBJS-$(CONFIG_HPELDSP) += aarch64/hpeldsp_init_aarch64.o
-OBJS-$(CONFIG_IMDCT15) += aarch64/imdct15_init.o
OBJS-$(CONFIG_MPEGAUDIODSP) += aarch64/mpegaudiodsp_init.o
OBJS-$(CONFIG_NEON_CLOBBER_TEST) += aarch64/neontest.o
OBJS-$(CONFIG_VIDEODSP) += aarch64/videodsp_init.o
@@ -35,7 +34,6 @@ NEON-OBJS-$(CONFIG_H264PRED) += aarch64/h264pred_neon.o
NEON-OBJS-$(CONFIG_H264QPEL) += aarch64/h264qpel_neon.o \
aarch64/hpeldsp_neon.o
NEON-OBJS-$(CONFIG_HPELDSP) += aarch64/hpeldsp_neon.o
-NEON-OBJS-$(CONFIG_IMDCT15) += aarch64/imdct15_neon.o
NEON-OBJS-$(CONFIG_MDCT) += aarch64/mdct_neon.o
NEON-OBJS-$(CONFIG_MPEGAUDIODSP) += aarch64/mpegaudiodsp_neon.o
diff --git a/libavcodec/aarch64/imdct15_init.c b/libavcodec/aarch64/imdct15_init.c
deleted file mode 100644
index 58af9f00c0..0000000000
--- a/libavcodec/aarch64/imdct15_init.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * 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 <stddef.h>
-
-#include "libavutil/cpu.h"
-#include "libavutil/aarch64/cpu.h"
-#include "libavutil/internal.h"
-
-#include "libavcodec/imdct15.h"
-
-#include "asm-offsets.h"
-
-AV_CHECK_OFFSET(IMDCT15Context, exptab, CELT_EXPTAB);
-AV_CHECK_OFFSET(IMDCT15Context, fft_n, CELT_FFT_N);
-AV_CHECK_OFFSET(IMDCT15Context, len2, CELT_LEN2);
-AV_CHECK_OFFSET(IMDCT15Context, len4, CELT_LEN4);
-AV_CHECK_OFFSET(IMDCT15Context, tmp, CELT_TMP);
-AV_CHECK_OFFSET(IMDCT15Context, twiddle_exptab, CELT_TWIDDLE);
-
-void ff_celt_imdct_half_neon(IMDCT15Context *s, float *dst, const float *src,
- ptrdiff_t stride, float scale);
-
-void ff_imdct15_init_aarch64(IMDCT15Context *s)
-{
- int cpu_flags = av_get_cpu_flags();
-
- if (have_neon(cpu_flags)) {
- s->imdct_half = ff_celt_imdct_half_neon;
- }
-}
diff --git a/libavcodec/aarch64/imdct15_neon.S b/libavcodec/aarch64/imdct15_neon.S
deleted file mode 100644
index 97e1442ccc..0000000000
--- a/libavcodec/aarch64/imdct15_neon.S
+++ /dev/null
@@ -1,647 +0,0 @@
-/*
- * Copyright (c) 2014 Janne Grunau <janne-libav at jannau.net>
- *
- * 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/aarch64/asm.S"
-
-#include "asm-offsets.h"
-
-.macro shuffle a, b, c, d
-const shuffle_\a\b\c\d, align=4
- .byte (\a * 4), (\a * 4 + 1), (\a * 4 + 2), (\a * 4 + 3)
- .byte (\b * 4), (\b * 4 + 1), (\b * 4 + 2), (\b * 4 + 3)
- .byte (\c * 4), (\c * 4 + 1), (\c * 4 + 2), (\c * 4 + 3)
- .byte (\d * 4), (\d * 4 + 1), (\d * 4 + 2), (\d * 4 + 3)
-endconst
-.endm
-
-shuffle 0, 2, 1, 3
-shuffle 1, 0, 3, 2
-shuffle 2, 3, 0, 1
-shuffle 3, 1, 2, 0
-
-
-function fft5_neon
- lsl x2, x2, #3
- ld1 {v24.2s}, [x1], x2
- ld2 {v25.s,v26.s}[0], [x1], x2
- ld2 {v25.s,v26.s}[1], [x1], x2
- ld2 {v25.s,v26.s}[2], [x1], x2
- ld2 {v25.s,v26.s}[3], [x1]
- dup v6.4s, v24.s[0]
- dup v7.4s, v24.s[1]
-
- faddp v0.4s, v25.4s, v26.4s
- // z[][0], z[][3]
- fmul v16.4s, v25.4s, v15.s[0] // rr
- fmul v17.4s, v25.4s, v15.s[1] // ri
- fmul v18.4s, v26.4s, v15.s[0] // ir
- fmul v19.4s, v26.4s, v15.s[1] // ii
- faddp v0.4s, v0.4s, v0.4s
- // z[][1], z[][2]
- fmul v20.4s, v25.4s, v15.s[2] // rr
- fmul v21.4s, v25.4s, v15.s[3] // ri
- fmul v22.4s, v26.4s, v15.s[2] // ir
- fmul v23.4s, v26.4s, v15.s[3] // ii
- fadd v0.2s, v24.2s, v0.2s // out[0]
-
- // z[0123][0], z[0123][3]
- fsub v24.4s, v16.4s, v19.4s // (c).re = rr - ii;
- fadd v27.4s, v16.4s, v19.4s // (d).re = rr + ii;
- ld1 {v16.16b}, [x11]
- ld1 {v19.16b}, [x14]
- fadd v28.4s, v17.4s, v18.4s // (c).im = ri + ir;
- fsub v31.4s, v18.4s, v17.4s // (d).im = -ri + ir;
- ld1 {v17.16b}, [x12]
- // z[0123][1], z[0123][2]
- fsub v25.4s, v20.4s, v23.4s // (c).re = rr - ii;
- fadd v26.4s, v20.4s, v23.4s // (d).re = rr + ii;
- ld1 {v18.16b}, [x13]
- fadd v29.4s, v21.4s, v22.4s // (c).im = ri + ir;
- fsub v30.4s, v22.4s, v21.4s // (d).im = -ri + ir;
-
- //real
- tbl v20.16b, {v24.16b}, v16.16b
- tbl v21.16b, {v25.16b}, v17.16b
- tbl v22.16b, {v26.16b}, v18.16b
- tbl v23.16b, {v27.16b}, v19.16b
- //imag
- tbl v16.16b, {v28.16b}, v16.16b
- tbl v17.16b, {v29.16b}, v17.16b
- tbl v18.16b, {v30.16b}, v18.16b
- tbl v19.16b, {v31.16b}, v19.16b
-
- fadd v6.4s, v6.4s, v20.4s
- fadd v22.4s, v22.4s, v23.4s
- fadd v7.4s, v7.4s, v16.4s
- fadd v18.4s, v18.4s, v19.4s
-
- fadd v21.4s, v21.4s, v22.4s
- fadd v17.4s, v17.4s, v18.4s
- fadd v6.4s, v6.4s, v21.4s
- fadd v7.4s, v7.4s, v17.4s
-
- ret
-endfunc
-
-function fft15_neon
- mov x8, x1
- mov x9, x30
- add x2, x3, x3, lsl #1 // 3 * stride
-
- add x1, x8, x3, lsl #3 // in + 1 * stride
- bl fft5_neon
- mov v1.8b, v0.8b
- mov v2.16b, v6.16b
- mov v3.16b, v7.16b
-
- add x1, x8, x3, lsl #4 // in + 2 * stride
- add x2, x3, x3, lsl #1 // 3 * stride
- bl fft5_neon
- zip1 v1.4s, v1.4s, v0.4s
- mov v4.16b, v6.16b
- mov v5.16b, v7.16b
-
- mov x1, x8 // in + 0 * stride
- add x2, x3, x3, lsl #1 // 3 * stride
- bl fft5_neon
-
- faddp v20.4s, v1.4s, v1.4s
-
- ext v18.16b, v8.16b, v8.16b, #4
- ext v19.16b, v9.16b, v9.16b, #4
- mov v16.16b, v6.16b
- mov v17.16b, v7.16b
- fadd v20.2s, v20.2s, v0.2s
-
- uzp1 v18.4s, v18.4s, v10.4s // exp[2,4,6,8].re
- uzp1 v19.4s, v19.4s, v11.4s // exp[2,4,6,8].im
-
- st1 {v20.2s}, [x0], #8 // out[0]
-
- fmla v16.4s, v2.4s, v8.4s
- fmls v16.4s, v3.4s, v9.4s
-
- fmla v17.4s, v2.4s, v9.4s
- fmla v17.4s, v3.4s, v8.4s
-
- fmla v16.4s, v4.4s, v18.4s
- fmls v16.4s, v5.4s, v19.4s
-
- fmla v17.4s, v4.4s, v19.4s
- fmla v17.4s, v5.4s, v18.4s
-
- zip1 v18.4s, v16.4s, v17.4s
- zip2 v19.4s, v16.4s, v17.4s
-
- rev64 v31.4s, v14.4s
- trn1 v28.2d, v1.2d, v1.2d
- trn2 v29.2d, v1.2d, v1.2d
- zip1 v30.2d, v14.2d, v31.2d
- zip2 v31.2d, v14.2d, v31.2d
-
- st1 {v18.4s,v19.4s}, [x0], #32 // out[1-4]
-
- fmul v16.4s, v28.4s, v30.4s
- fmul v17.4s, v29.4s, v30.4s
- fmls v16.4s, v29.4s, v31.4s
- fmla v17.4s, v28.4s, v31.4s
- faddp v16.4s, v16.4s, v16.4s
- faddp v17.4s, v17.4s, v17.4s
- zip1 v18.2s, v16.2s, v17.2s
- zip2 v19.2s, v16.2s, v17.2s
-
- fadd v18.2s, v18.2s, v0.2s
- fadd v0.2s, v19.2s, v0.2s
-
- ext v30.16b, v12.16b, v12.16b, #4
- ext v31.16b, v13.16b, v13.16b, #4
- mov v16.16b, v6.16b
- mov v17.16b, v7.16b
-
- uzp1 v30.4s, v30.4s, v8.4s
- uzp1 v31.4s, v31.4s, v9.4s
-
- st1 {v18.2s}, [x0], #8 // out[5]
-
- fmla v16.4s, v2.4s, v10.4s
- fmls v16.4s, v3.4s, v11.4s
-
- fmla v17.4s, v2.4s, v11.4s
- fmla v17.4s, v3.4s, v10.4s
-
- fmla v16.4s, v4.4s, v30.4s
- fmls v16.4s, v5.4s, v31.4s
-
- fmla v17.4s, v4.4s, v31.4s
- fmla v17.4s, v5.4s, v30.4s
-
- zip1 v18.4s, v16.4s, v17.4s
- zip2 v19.4s, v16.4s, v17.4s
-
- ext v30.16b, v10.16b, v10.16b, #4
- ext v31.16b, v11.16b, v11.16b, #4
-
- fmla v6.4s, v2.4s, v12.4s
- fmls v6.4s, v3.4s, v13.4s
-
- st1 {v18.4s,v19.4s}, [x0], #32 // out[6-9]
-
- uzp1 v30.4s, v30.4s, v12.4s
- uzp1 v31.4s, v31.4s, v13.4s
-
- fmla v7.4s, v2.4s, v13.4s
- fmla v7.4s, v3.4s, v12.4s
-
- st1 {v0.2s}, [x0], #8 // out[10]
-
- fmla v6.4s, v4.4s, v30.4s
- fmls v6.4s, v5.4s, v31.4s
-
- fmla v7.4s, v4.4s, v31.4s
- fmla v7.4s, v5.4s, v30.4s
-
- zip1 v18.4s, v6.4s, v7.4s
- zip2 v19.4s, v6.4s, v7.4s
-
- st1 {v18.4s,v19.4s}, [x0], #32 // out[11-14]
-
- ret x9
-endfunc
-
-// x0: out, x1: out+len2, x2: exptab, x3: len2
-function fft15_pass
- ands x6, x3, #3
- mov x4, x0
- mov x5, x1
- b.eq 9f
- ld1 {v0.2s}, [x0], #8
- ld1 {v1.2s}, [x1], #8
- sub x3, x3, x6
- subs x6, x6, #1
- fadd v2.2s, v0.2s, v1.2s
- fsub v3.2s, v0.2s, v1.2s
- add x2, x2, #8
- st1 {v2.2s}, [x4], #8
- st1 {v3.2s}, [x5], #8
- b.eq 9f
-1:
- subs x6, x6, #1
- ldp s4, s5, [x2], #8
- ldp s2, s3, [x1], #8
- ldp s0, s1, [x0], #8
-
- fmul s6, s2, s4
- fmul s7, s2, s5
- fmls s6, s3, v5.s[0]
- fmla s7, s3, v4.s[0]
-
- fsub s2, s0, s6
- fsub s3, s1, s7
- fadd s0, s0, s6
- fadd s1, s1, s7
-
- stp s2, s3, [x5], #8
- stp s0, s1, [x4], #8
- b.gt 1b
-9:
- ld1 {v4.4s,v5.4s}, [x2], #32
- ld2 {v2.4s,v3.4s}, [x1], #32
- uzp1 v6.4s, v4.4s, v5.4s
- uzp2 v7.4s, v4.4s, v5.4s
- ld2 {v0.4s,v1.4s}, [x0], #32
-8:
- subs x3, x3, #8
-
- fmul v4.4s, v2.4s, v6.4s
- fmul v5.4s, v2.4s, v7.4s
- b.lt 4f
-
- ld1 {v18.4s,v19.4s}, [x2], #32
-
- fmls v4.4s, v3.4s, v7.4s
- fmla v5.4s, v3.4s, v6.4s
-
- ld2 {v22.4s,v23.4s}, [x1], #32
-
- fsub v2.4s, v0.4s, v4.4s
- fadd v0.4s, v0.4s, v4.4s
- fsub v3.4s, v1.4s, v5.4s
- fadd v1.4s, v1.4s, v5.4s
-
- uzp1 v16.4s, v18.4s, v19.4s
- uzp2 v17.4s, v18.4s, v19.4s
-
- st2 {v2.4s,v3.4s}, [x5], #32
- st2 {v0.4s,v1.4s}, [x4], #32
- ld2 {v20.4s,v21.4s}, [x0], #32
-
- fmul v18.4s, v22.4s, v16.4s
- fmul v19.4s, v22.4s, v17.4s
- b.eq 0f
-
- ld1 {v4.4s,v5.4s}, [x2], #32
-
- fmls v18.4s, v23.4s, v17.4s
- fmla v19.4s, v23.4s, v16.4s
-
- ld2 {v2.4s,v3.4s}, [x1], #32
-
- fsub v22.4s, v20.4s, v18.4s
- fadd v20.4s, v20.4s, v18.4s
- fsub v23.4s, v21.4s, v19.4s
- fadd v21.4s, v21.4s, v19.4s
-
- uzp1 v6.4s, v4.4s, v5.4s
- uzp2 v7.4s, v4.4s, v5.4s
-
- st2 {v22.4s,v23.4s}, [x5], #32
- st2 {v20.4s,v21.4s}, [x4], #32
- ld2 {v0.4s,v1.4s}, [x0], #32
-
- b 8b
-4:
- fmls v4.4s, v3.4s, v7.4s
- fmla v5.4s, v3.4s, v6.4s
-
- fsub v2.4s, v0.4s, v4.4s
- fadd v0.4s, v0.4s, v4.4s
- fsub v3.4s, v1.4s, v5.4s
- fadd v1.4s, v1.4s, v5.4s
-
- st2 {v2.4s,v3.4s}, [x5], #32
- st2 {v0.4s,v1.4s}, [x4], #32
-
- ret
-0:
- fmls v18.4s, v23.4s, v17.4s
- fmla v19.4s, v23.4s, v16.4s
-
- fsub v22.4s, v20.4s, v18.4s
- fadd v20.4s, v20.4s, v18.4s
- fsub v23.4s, v21.4s, v19.4s
- fadd v21.4s, v21.4s, v19.4s
-
- st2 {v22.4s,v23.4s}, [x5], #32
- st2 {v20.4s,v21.4s}, [x4], #32
-
- ret
-endfunc
-
-function fft30_neon, align=6
- sub sp, sp, #0x20
- stp x20, x21, [sp]
- stp x22, x30, [sp, #0x10]
- mov x21, x1
- mov x22, x2
- mov x20, x4
- mov x0, x21
- mov x1, x22
- lsl x3, x20, #1
- bl fft15_neon
-
- add x0, x21, #15*8
- add x1, x22, x20, lsl #3
- lsl x3, x20, #1
- bl fft15_neon
-
- ldr x2, [x10, #(CELT_EXPTAB + 8)] // s->exptab[1]
- add x0, x21, #0
- add x1, x21, #15*8
- mov x3, #15
- ldp x20, x21, [sp]
- ldp x22, x30, [sp, #0x10]
- add sp, sp, #0x20
- b fft15_pass
-endfunc
-
-.macro def_fft n, n2
-function fft\n\()_neon, align=6
- sub sp, sp, #0x30
- stp x20, x21, [sp]
- stp x22, x30, [sp, #0x10]
- stp x23, x24, [sp, #0x20]
- mov x21, x1
- mov x22, x2
- mov x23, x3
- mov x20, x4
- sub x3, x3, #1
- lsl x4, x4, #1
- bl fft\n2\()_neon
-
- add x1, x21, #(\n2 * 8)
- add x2, x22, x20, lsl #3
- sub x3, x23, #1
- lsl x4, x20, #1
- bl fft\n2\()_neon
-
- add x5, x10, #CELT_EXPTAB
- mov x0, x21
- ldr x2, [x5, x23, lsl #3] // s->exptab[N]
- add x1, x21, #(\n2 * 8)
- mov x3, #\n2
- ldp x20, x21, [sp]
- ldp x22, x30, [sp, #0x10]
- ldp x23, x24, [sp, #0x20]
- add sp, sp, #0x30
- b fft15_pass
-endfunc
-.endm
-
- def_fft 60, 30
- def_fft 120, 60
- def_fft 240, 120
- def_fft 480, 240
- def_fft 960, 480
-
-function fft_b15_calc_neon
- sub sp, sp, #0x50
- ldr x8, [x0, #CELT_EXPTAB] // s->exptab[0]
- movrel x6, fact5
- movrel x11, shuffle_0213
- movrel x12, shuffle_1032
- movrel x13, shuffle_2301
- movrel x14, shuffle_3120
- add x8, x8, #8
- movrel x5, fft_tab_neon
- stp x20, x30, [sp]
- stp d8, d9, [sp, #0x10]
- stp d10, d11, [sp, #0x20]
- stp d12, d13, [sp, #0x30]
- stp d14, d15, [sp, #0x40]
- ld1 {v15.4s}, [x6]
- ld1 {v0.4s,v1.4s}, [x8], #32
- ld1 {v6.2s}, [x8], #8
- ld1 {v2.4s,v3.4s}, [x8], #32
- ld1 {v7.2s}, [x8], #8
- ld1 {v4.4s,v5.4s}, [x8], #32
- uzp1 v8.4s, v0.4s, v1.4s // exp[ 1 - 4].re
- uzp2 v9.4s, v0.4s, v1.4s // exp[ 1 - 4].im
- uzp1 v10.4s, v2.4s, v3.4s // exp[ 6 - 9].re
- uzp2 v11.4s, v2.4s, v3.4s // exp[ 6 - 9].im
- uzp1 v12.4s, v4.4s, v5.4s // exp[11 - 14].re
- uzp2 v13.4s, v4.4s, v5.4s // exp[11 - 14].im
- zip1 v14.4s, v6.4s, v7.4s // exp[5,10].re/exp[5,10].im
- add x5, x5, x3, lsl #3
- ldr x5, [x5]
- mov x10, x0
- blr x5
- ldp x20, x30, [sp]
- ldp d8, d9, [sp, #0x10]
- ldp d10, d11, [sp, #0x20]
- ldp d12, d13, [sp, #0x30]
- ldp d14, d15, [sp, #0x40]
- add sp, sp, #0x50
- ret
-endfunc
-
-const fft_tab_neon, relocate=1
- .quad fft15_neon
- .quad fft30_neon
- .quad fft60_neon
- .quad fft120_neon
- .quad fft240_neon
- .quad fft480_neon
- .quad fft960_neon
-endconst
-
-function ff_celt_imdct_half_neon, export=1
- sub sp, sp, #0x20
- stp x21, x30, [sp]
- str s0, [sp, #0x10]
-
- ldp w5, w6, [x0, #CELT_LEN2] // CELT_LEN4
- mov x10, x0
- mov x21, x1
- sub w5, w5, #1
- lsl x7, x3, #3 // 2 * stride * sizeof(float)
- sub x8, xzr, x3, lsl #3 // -2 * stride * sizeof(float)
- mul x5, x5, x3
- ldp x9, x10, [x0, #CELT_TMP] // CELT_TWIDDLE
- ldr w3, [x0, #CELT_FFT_N]
- add x5, x2, x5, lsl #2
- mov x11, x9
-
- sub w6, w6, #4
- ld1 {v0.s}[0], [x5], x8
- ld1 {v1.s}[0], [x2], x7
- ld1 {v4.4s,v5.4s}, [x10], #32
- ld1 {v0.s}[1], [x5], x8
- ld1 {v1.s}[1], [x2], x7
- uzp1 v2.4s, v4.4s, v5.4s
- ld1 {v0.s}[2], [x5], x8
- ld1 {v1.s}[2], [x2], x7
- uzp2 v3.4s, v4.4s, v5.4s
- ld1 {v0.s}[3], [x5], x8
- ld1 {v1.s}[3], [x2], x7
-1:
- subs w6, w6, #4
-
- ld1 {v20.s}[0], [x5], x8
- ld1 {v21.s}[0], [x2], x7
- ld1 {v4.4s,v5.4s}, [x10], #32
-
- fmul v6.4s, v0.4s, v2.4s
- fmul v7.4s, v0.4s, v3.4s
-
- ld1 {v20.s}[1], [x5], x8
- ld1 {v21.s}[1], [x2], x7
-
- fmls v6.4s, v1.4s, v3.4s
- fmla v7.4s, v1.4s, v2.4s
-
- ld1 {v20.s}[2], [x5], x8
- ld1 {v21.s}[2], [x2], x7
-
- uzp1 v2.4s, v4.4s, v5.4s
- uzp2 v3.4s, v4.4s, v5.4s
- ld1 {v20.s}[3], [x5], x8
- ld1 {v21.s}[3], [x2], x7
-
- zip1 v4.4s, v6.4s, v7.4s
- zip2 v5.4s, v6.4s, v7.4s
-
- fmul v6.4s, v20.4s, v2.4s
- fmul v7.4s, v20.4s, v3.4s
-
- st1 {v4.4s,v5.4s}, [x9], #32
-
- fmls v6.4s, v21.4s, v3.4s
- fmla v7.4s, v21.4s, v2.4s
-
- b.eq 3f
-
- subs w6, w6, #4
- ld1 {v4.4s,v5.4s}, [x10], #32
- ld1 {v0.s}[0], [x5], x8
- ld1 {v1.s}[0], [x2], x7
- uzp1 v2.4s, v4.4s, v5.4s
- ld1 {v0.s}[1], [x5], x8
- ld1 {v1.s}[1], [x2], x7
- uzp2 v3.4s, v4.4s, v5.4s
- ld1 {v0.s}[2], [x5], x8
- ld1 {v1.s}[2], [x2], x7
- zip1 v4.4s, v6.4s, v7.4s
- zip2 v5.4s, v6.4s, v7.4s
- ld1 {v0.s}[3], [x5], x8
- ld1 {v1.s}[3], [x2], x7
-
- st1 {v4.4s,v5.4s}, [x9], #32
-
- b.gt 1b
-
- fmul v6.4s, v0.4s, v2.4s
- fmul v7.4s, v0.4s, v3.4s
- fmls v6.4s, v1.4s, v3.4s
- fmla v7.4s, v1.4s, v2.4s
-3:
- zip1 v4.4s, v6.4s, v7.4s
- zip2 v5.4s, v6.4s, v7.4s
- st1 {v4.4s,v5.4s}, [x9], #32
-
- mov x2, x11
- mov x4, #1
-
- bl fft_b15_calc_neon
-
- ldr w5, [x10, #CELT_LEN4]
- ldr x6, [x10, #CELT_TWIDDLE]
- ldr s31, [sp, #0x10]
-
- add x1, x21, x5, lsl #2
- add x3, x6, x5, lsl #2
- sub x0, x1, #16
- sub x2, x3, #16
- mov x8, #-16
- mov x7, #16
- mov x10, x0
- mov x11, x1
-
- sub w5, w5, #4
-
- ld1 {v0.4s}, [x0], x8
- ld1 {v1.4s}, [x1], x7
- ld1 {v2.4s}, [x2], x8
- ld1 {v3.4s}, [x3], x7
-
- uzp1 v4.4s, v0.4s, v1.4s // z[-i-2, -i-1, +i, i+1].re
- uzp2 v6.4s, v0.4s, v1.4s // z[-i-2, -i-1, +i, i+1].im
-
- uzp1 v5.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].re
- uzp2 v7.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].im
-
- fmul v1.4s, v6.4s, v5.4s
- fmul v0.4s, v6.4s, v7.4s
-2:
- subs w5, w5, #4
-
- ld1 {v20.4s}, [x0], x8
-
- fmla v1.4s, v4.4s, v7.4s
- fmls v0.4s, v4.4s, v5.4s
-
- ld1 {v21.4s}, [x1], x7
-
- ext v1.16b, v1.16b, v1.16b, #8
- fmul v0.4s, v0.4s, v31.s[0]
-
- ld1 {v2.4s}, [x2], x8
-
- rev64 v1.4s, v1.4s
- fmul v1.4s, v1.4s, v31.s[0]
-
- ld1 {v3.4s}, [x3], x7
-
- zip1 v5.4s, v0.4s, v1.4s
- zip2 v7.4s, v0.4s, v1.4s
-
- uzp1 v4.4s, v20.4s, v21.4s // z[-i-2, -i-1, +i, i+1].re
- uzp2 v6.4s, v20.4s, v21.4s // z[-i-2, -i-1, +i, i+1].im
-
- st1 {v5.4s}, [x10], x8
- st1 {v7.4s}, [x11], x7
-
- uzp1 v5.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].re
- uzp2 v7.4s, v2.4s, v3.4s // twidlle_exptab[-i-2, -i-1, +i, i+1].im
-
- fmul v1.4s, v6.4s, v5.4s
- fmul v0.4s, v6.4s, v7.4s
- b.gt 2b
-
- fmla v1.4s, v4.4s, v7.4s
- fmls v0.4s, v4.4s, v5.4s
- ext v1.16b, v1.16b, v1.16b, #8
- fmul v0.4s, v0.4s, v31.s[0]
- rev64 v1.4s, v1.4s
- fmul v1.4s, v1.4s, v31.s[0]
- zip1 v5.4s, v0.4s, v1.4s
- zip2 v7.4s, v0.4s, v1.4s
- st1 {v5.4s}, [x10], x8
- st1 {v7.4s}, [x11], x7
-
- ldp x21, x30, [sp]
- add sp, sp, #0x20
- ret
-endfunc
-
-// [0] = exp(2 * i * pi / 5), [1] = exp(2 * i * pi * 2 / 5)
-const fact5, align=4
- .float 0.30901699437494745, 0.95105651629515353
- .float -0.80901699437494734, 0.58778525229247325
-endconst
diff --git a/libavcodec/imdct15.c b/libavcodec/imdct15.c
index e91aa11085..7481c026cf 100644
--- a/libavcodec/imdct15.c
+++ b/libavcodec/imdct15.c
@@ -136,9 +136,6 @@ av_cold int ff_imdct15_init(IMDCT15Context **ps, int N)
s->imdct_half = imdct15_half;
- if (ARCH_AARCH64)
- ff_imdct15_init_aarch64(s);
-
*ps = s;
return 0;
diff --git a/libavcodec/imdct15.h b/libavcodec/imdct15.h
index 1979aa76af..7a58aac8b3 100644
--- a/libavcodec/imdct15.h
+++ b/libavcodec/imdct15.h
@@ -51,7 +51,4 @@ int ff_imdct15_init(IMDCT15Context **s, int N);
*/
void ff_imdct15_uninit(IMDCT15Context **s);
-
-void ff_imdct15_init_aarch64(IMDCT15Context *s);
-
#endif /* AVCODEC_IMDCT15_H */
--
2.11.0.390.gc69c2f50cf
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