From 648d792042cb6d58d032f3ae2518169d91a87274 Mon Sep 17 00:00:00 2001 From: Måns Rullgård Date: Thu, 10 Sep 2009 08:50:03 +0000 Subject: ARM: NEON optimised FFT and MDCT Vorbis and AC3 ~3x faster. Parts by Naotoshi Nojiri, naonoj gmail Originally committed as revision 19806 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/Makefile | 4 + libavcodec/arm/fft_neon.S | 369 +++++++++++++++++++++++++++++++++++++++++++++ libavcodec/arm/mdct_neon.S | 178 ++++++++++++++++++++++ libavcodec/dsputil.h | 4 + libavcodec/fft.c | 10 +- 5 files changed, 564 insertions(+), 1 deletion(-) create mode 100644 libavcodec/arm/fft_neon.S create mode 100644 libavcodec/arm/mdct_neon.S diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 75b3beead4..68387d614f 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -496,6 +496,10 @@ OBJS-$(HAVE_ARMVFP) += arm/dsputil_vfp.o \ OBJS-$(HAVE_IWMMXT) += arm/dsputil_iwmmxt.o \ arm/mpegvideo_iwmmxt.o \ +NEON-OBJS-$(CONFIG_FFT) += arm/fft_neon.o \ + +NEON-OBJS-$(CONFIG_MDCT) += arm/mdct_neon.o \ + NEON-OBJS-$(CONFIG_H264_DECODER) += arm/h264dsp_neon.o \ arm/h264idct_neon.o \ diff --git a/libavcodec/arm/fft_neon.S b/libavcodec/arm/fft_neon.S new file mode 100644 index 0000000000..6ed5789fb7 --- /dev/null +++ b/libavcodec/arm/fft_neon.S @@ -0,0 +1,369 @@ +/* + * ARM NEON optimised FFT + * + * Copyright (c) 2009 Mans Rullgard + * Copyright (c) 2009 Naotoshi Nojiri + * + * 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 "asm.S" + +#define M_SQRT1_2 0.70710678118654752440 + + .text + +function fft4_neon + vld1.32 {d0-d3}, [r0,:128] + + vext.32 q8, q1, q1, #1 @ i2,r3 d3=i3,r2 + vsub.f32 d6, d0, d1 @ r0-r1,i0-i1 + vsub.f32 d7, d16, d17 @ r3-r2,i2-i3 + vadd.f32 d4, d0, d1 @ r0+r1,i0+i1 + vadd.f32 d5, d2, d3 @ i2+i3,r2+r3 + vadd.f32 d1, d6, d7 + vsub.f32 d3, d6, d7 + vadd.f32 d0, d4, d5 + vsub.f32 d2, d4, d5 + + vst1.32 {d0-d3}, [r0,:128] + + bx lr +.endfunc + +function fft8_neon + mov r1, r0 + vld1.32 {d0-d3}, [r1,:128]! + vld1.32 {d16-d19}, [r1,:128] + + movw r2, #0x04f3 @ sqrt(1/2) + movt r2, #0x3f35 + eor r3, r2, #1<<31 + vdup.32 d31, r2 + + vext.32 q11, q1, q1, #1 @ i2,r3,i3,r2 + vadd.f32 d4, d16, d17 @ r4+r5,i4+i5 + vmov d28, r3, r2 + vadd.f32 d5, d18, d19 @ r6+r7,i6+i7 + vsub.f32 d17, d16, d17 @ r4-r5,i4-i5 + vsub.f32 d19, d18, d19 @ r6-r7,i6-i7 + vrev64.32 d29, d28 + vadd.f32 d20, d0, d1 @ r0+r1,i0+i1 + vadd.f32 d21, d2, d3 @ r2+r3,i2+i3 + vmul.f32 d26, d17, d28 @ -a2r*w,a2i*w + vext.32 q3, q2, q2, #1 + vmul.f32 d27, d19, d29 @ a3r*w,-a3i*w + vsub.f32 d23, d22, d23 @ i2-i3,r3-r2 + vsub.f32 d22, d0, d1 @ r0-r1,i0-i1 + vmul.f32 d24, d17, d31 @ a2r*w,a2i*w + vmul.f32 d25, d19, d31 @ a3r*w,a3i*w + vadd.f32 d0, d20, d21 + vsub.f32 d2, d20, d21 + vadd.f32 d1, d22, d23 + vrev64.32 q13, q13 + vsub.f32 d3, d22, d23 + vsub.f32 d6, d6, d7 + vadd.f32 d24, d24, d26 @ a2r+a2i,a2i-a2r t1,t2 + vadd.f32 d25, d25, d27 @ a3r-a3i,a3i+a3r t5,t6 + vadd.f32 d7, d4, d5 + vsub.f32 d18, d2, d6 + vext.32 q13, q12, q12, #1 + vadd.f32 d2, d2, d6 + vsub.f32 d16, d0, d7 + vadd.f32 d5, d25, d24 + vsub.f32 d4, d26, d27 + vadd.f32 d0, d0, d7 + vsub.f32 d17, d1, d5 + vsub.f32 d19, d3, d4 + vadd.f32 d3, d3, d4 + vadd.f32 d1, d1, d5 + + vst1.32 {d16-d19}, [r1,:128] + vst1.32 {d0-d3}, [r0,:128] + + bx lr +.endfunc + +function fft16_neon + movrel r1, mppm + vld1.32 {d16-d19}, [r0,:128]! @ q8{r0,i0,r1,i1} q9{r2,i2,r3,i3} + pld [r0, #32] + vld1.32 {d2-d3}, [r1,:128] + vext.32 q13, q9, q9, #1 + vld1.32 {d22-d25}, [r0,:128]! @ q11{r4,i4,r5,i5} q12{r6,i5,r7,i7} + vadd.f32 d4, d16, d17 + vsub.f32 d5, d16, d17 + vadd.f32 d18, d18, d19 + vsub.f32 d19, d26, d27 + + vadd.f32 d20, d22, d23 + vsub.f32 d22, d22, d23 + vsub.f32 d23, d24, d25 + vadd.f32 q8, q2, q9 @ {r0,i0,r1,i1} + vadd.f32 d21, d24, d25 + vmul.f32 d24, d22, d2 + vsub.f32 q9, q2, q9 @ {r2,i2,r3,i3} + vmul.f32 d25, d23, d3 + vuzp.32 d16, d17 @ {r0,r1,i0,i1} + vmul.f32 q1, q11, d2[1] + vuzp.32 d18, d19 @ {r2,r3,i2,i3} + vrev64.32 q12, q12 + vadd.f32 q11, q12, q1 @ {t1a,t2a,t5,t6} + vld1.32 {d24-d27}, [r0,:128]! @ q12{r8,i8,r9,i9} q13{r10,i10,r11,i11} + vzip.32 q10, q11 + vld1.32 {d28-d31}, [r0,:128] @ q14{r12,i12,r13,i13} q15{r14,i14,r15,i15} + vadd.f32 d0, d22, d20 + vadd.f32 d1, d21, d23 + vsub.f32 d2, d21, d23 + vsub.f32 d3, d22, d20 + sub r0, r0, #96 + vext.32 q13, q13, q13, #1 + vsub.f32 q10, q8, q0 @ {r4,r5,i4,i5} + vadd.f32 q8, q8, q0 @ {r0,r1,i0,i1} + vext.32 q15, q15, q15, #1 + vsub.f32 q11, q9, q1 @ {r6,r7,i6,i7} + vswp d25, d26 @ q12{r8,i8,i10,r11} q13{r9,i9,i11,r10} + vadd.f32 q9, q9, q1 @ {r2,r3,i2,i3} + vswp d29, d30 @ q14{r12,i12,i14,r15} q15{r13,i13,i15,r14} + vadd.f32 q0, q12, q13 @ {t1,t2,t5,t6} + vadd.f32 q1, q14, q15 @ {t1a,t2a,t5a,t6a} + movrel r2, ff_cos_16 + vsub.f32 q13, q12, q13 @ {t3,t4,t7,t8} + vrev64.32 d1, d1 + vsub.f32 q15, q14, q15 @ {t3a,t4a,t7a,t8a} + vrev64.32 d3, d3 + movrel r3, pmmp + vswp d1, d26 @ q0{t1,t2,t3,t4} q13{t6,t5,t7,t8} + vswp d3, d30 @ q1{t1a,t2a,t3a,t4a} q15{t6a,t5a,t7a,t8a} + vadd.f32 q12, q0, q13 @ {r8,i8,r9,i9} + vadd.f32 q14, q1, q15 @ {r12,i12,r13,i13} + vld1.32 {d4-d5}, [r2,:64] + vsub.f32 q13, q0, q13 @ {r10,i10,r11,i11} + vsub.f32 q15, q1, q15 @ {r14,i14,r15,i15} + vswp d25, d28 @ q12{r8,i8,r12,i12} q14{r9,i9,r13,i13} + vld1.32 {d6-d7}, [r3,:128] + vrev64.32 q1, q14 + vmul.f32 q14, q14, d4[1] + vmul.f32 q1, q1, q3 + vmla.f32 q14, q1, d5[1] @ {t1a,t2a,t5a,t6a} + vswp d27, d30 @ q13{r10,i10,r14,i14} q15{r11,i11,r15,i15} + vzip.32 q12, q14 + vadd.f32 d0, d28, d24 + vadd.f32 d1, d25, d29 + vsub.f32 d2, d25, d29 + vsub.f32 d3, d28, d24 + vsub.f32 q12, q8, q0 @ {r8,r9,i8,i9} + vadd.f32 q8, q8, q0 @ {r0,r1,i0,i1} + vsub.f32 q14, q10, q1 @ {r12,r13,i12,i13} + mov r1, #32 + vadd.f32 q10, q10, q1 @ {r4,r5,i4,i5} + vrev64.32 q0, q13 + vmul.f32 q13, q13, d5[0] + vrev64.32 q1, q15 + vmul.f32 q15, q15, d5[1] + vst2.32 {d16-d17},[r0,:128], r1 + vmul.f32 q0, q0, q3 + vst2.32 {d20-d21},[r0,:128], r1 + vmul.f32 q1, q1, q3 + vmla.f32 q13, q0, d5[0] @ {t1,t2,t5,t6} + vmla.f32 q15, q1, d4[1] @ {t1a,t2a,t5a,t6a} + vst2.32 {d24-d25},[r0,:128], r1 + vst2.32 {d28-d29},[r0,:128] + vzip.32 q13, q15 + sub r0, r0, #80 + vadd.f32 d0, d30, d26 + vadd.f32 d1, d27, d31 + vsub.f32 d2, d27, d31 + vsub.f32 d3, d30, d26 + vsub.f32 q13, q9, q0 @ {r10,r11,i10,i11} + vadd.f32 q9, q9, q0 @ {r2,r3,i2,i3} + vsub.f32 q15, q11, q1 @ {r14,r15,i14,i15} + vadd.f32 q11, q11, q1 @ {r6,r7,i6,i7} + vst2.32 {d18-d19},[r0,:128], r1 + vst2.32 {d22-d23},[r0,:128], r1 + vst2.32 {d26-d27},[r0,:128], r1 + vst2.32 {d30-d31},[r0,:128] + bx lr +.endfunc + +function fft_pass_neon + push {r4-r6,lr} + mov r6, r2 @ n + lsl r5, r2, #3 @ 2 * n * sizeof FFTSample + lsl r4, r2, #4 @ 2 * n * sizeof FFTComplex + lsl r2, r2, #5 @ 4 * n * sizeof FFTComplex + add r3, r2, r4 + add r4, r4, r0 @ &z[o1] + add r2, r2, r0 @ &z[o2] + add r3, r3, r0 @ &z[o3] + vld1.32 {d20-d21},[r2,:128] @ {z[o2],z[o2+1]} + movrel r12, pmmp + vld1.32 {d22-d23},[r3,:128] @ {z[o3],z[o3+1]} + add r5, r5, r1 @ wim + vld1.32 {d6-d7}, [r12,:128] @ pmmp + vswp d21, d22 + vld1.32 {d4}, [r1,:64]! @ {wre[0],wre[1]} + sub r5, r5, #4 @ wim-- + vrev64.32 q1, q11 + vmul.f32 q11, q11, d4[1] + vmul.f32 q1, q1, q3 + vld1.32 {d5[0]}, [r5,:32] @ d5[0] = wim[-1] + vmla.f32 q11, q1, d5[0] @ {t1a,t2a,t5a,t6a} + vld2.32 {d16-d17},[r0,:128] @ {z[0],z[1]} + sub r6, r6, #1 @ n-- + vld2.32 {d18-d19},[r4,:128] @ {z[o1],z[o1+1]} + vzip.32 q10, q11 + vadd.f32 d0, d22, d20 + vadd.f32 d1, d21, d23 + vsub.f32 d2, d21, d23 + vsub.f32 d3, d22, d20 + vsub.f32 q10, q8, q0 + vadd.f32 q8, q8, q0 + vsub.f32 q11, q9, q1 + vadd.f32 q9, q9, q1 + vst2.32 {d20-d21},[r2,:128]! @ {z[o2],z[o2+1]} + vst2.32 {d16-d17},[r0,:128]! @ {z[0],z[1]} + vst2.32 {d22-d23},[r3,:128]! @ {z[o3],z[o3+1]} + vst2.32 {d18-d19},[r4,:128]! @ {z[o1],z[o1+1]} + sub r5, r5, #8 @ wim -= 2 +1: + vld1.32 {d20-d21},[r2,:128] @ {z[o2],z[o2+1]} + vld1.32 {d22-d23},[r3,:128] @ {z[o3],z[o3+1]} + vswp d21, d22 + vld1.32 {d4}, [r1]! @ {wre[0],wre[1]} + vrev64.32 q0, q10 + vmul.f32 q10, q10, d4[0] + vrev64.32 q1, q11 + vmul.f32 q11, q11, d4[1] + vld1.32 {d5}, [r5] @ {wim[-1],wim[0]} + vmul.f32 q0, q0, q3 + sub r5, r5, #8 @ wim -= 2 + vmul.f32 q1, q1, q3 + vmla.f32 q10, q0, d5[1] @ {t1,t2,t5,t6} + vmla.f32 q11, q1, d5[0] @ {t1a,t2a,t5a,t6a} + vld2.32 {d16-d17},[r0,:128] @ {z[0],z[1]} + subs r6, r6, #1 @ n-- + vld2.32 {d18-d19},[r4,:128] @ {z[o1],z[o1+1]} + vzip.32 q10, q11 + vadd.f32 d0, d22, d20 + vadd.f32 d1, d21, d23 + vsub.f32 d2, d21, d23 + vsub.f32 d3, d22, d20 + vsub.f32 q10, q8, q0 + vadd.f32 q8, q8, q0 + vsub.f32 q11, q9, q1 + vadd.f32 q9, q9, q1 + vst2.32 {d20-d21}, [r2,:128]! @ {z[o2],z[o2+1]} + vst2.32 {d16-d17}, [r0,:128]! @ {z[0],z[1]} + vst2.32 {d22-d23}, [r3,:128]! @ {z[o3],z[o3+1]} + vst2.32 {d18-d19}, [r4,:128]! @ {z[o1],z[o1+1]} + bne 1b + + pop {r4-r6,pc} +.endfunc + +.macro def_fft n, n2, n4 + .align 6 +function fft\n\()_neon + push {r4, lr} + mov r4, r0 + bl fft\n2\()_neon + add r0, r4, #\n4*2*8 + bl fft\n4\()_neon + add r0, r4, #\n4*3*8 + bl fft\n4\()_neon + mov r0, r4 + pop {r4, lr} + movrel r1, ff_cos_\n + 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_calc_neon, export=1 + ldr r2, [r0] + sub r2, r2, #2 + movrel r3, fft_tab_neon + ldr r3, [r3, r2, lsl #2] + mov r0, r1 + bx r3 +.endfunc + +function ff_fft_permute_neon, export=1 + push {r4,lr} + mov r12, #1 + ldr r2, [r0] @ nbits + ldr r3, [r0, #20] @ tmp_buf + ldr r0, [r0, #8] @ revtab + lsl r12, r12, r2 + mov r2, r12 +1: + vld1.32 {d0-d1}, [r1,:128]! + ldr r4, [r0], #4 + uxtah lr, r3, r4 + uxtah r4, r3, r4, ror #16 + vst1.32 {d0}, [lr,:64] + vst1.32 {d1}, [r4,:64] + subs r12, r12, #2 + bgt 1b + + sub r1, r1, r2, lsl #3 +1: + vld1.32 {d0-d3}, [r3,:128]! + vst1.32 {d0-d3}, [r1,:128]! + subs r2, r2, #4 + bgt 1b + + pop {r4,pc} +.endfunc + + .section .rodata + .align 4 +fft_tab_neon: + .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 + .size fft_tab_neon, . - fft_tab_neon + + .align 4 +pmmp: .float +1.0, -1.0, -1.0, +1.0 +mppm: .float -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2 diff --git a/libavcodec/arm/mdct_neon.S b/libavcodec/arm/mdct_neon.S new file mode 100644 index 0000000000..6d1dcfd48d --- /dev/null +++ b/libavcodec/arm/mdct_neon.S @@ -0,0 +1,178 @@ +/* + * ARM NEON optimised MDCT + * Copyright (c) 2009 Mans Rullgard + * + * 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 "asm.S" + + .fpu neon + .text + +function ff_imdct_half_neon, export=1 + push {r4-r8,lr} + + mov r12, #1 + ldr lr, [r0, #4] @ nbits + ldr r4, [r0, #8] @ tcos + ldr r5, [r0, #12] @ tsin + ldr r3, [r0, #24] @ revtab + lsl r12, r12, lr @ n = 1 << nbits + lsr lr, r12, #2 @ n4 = n >> 2 + add r7, r2, r12, lsl #1 + mov r12, #-16 + sub r7, r7, #16 + + vld1.32 {d16-d17},[r7,:128],r12 @ d16=x,n1 d17=x,n0 + vld1.32 {d0-d1}, [r2,:128]! @ d0 =m0,x d1 =m1,x + vld1.32 {d2}, [r4,:64]! @ d2=c0,c1 + vld1.32 {d3}, [r5,:64]! @ d3=s0,s1 + vuzp.32 d17, d16 + vuzp.32 d0, d1 + vmul.f32 d6, d16, d2 + vmul.f32 d7, d0, d2 +1: + subs lr, lr, #2 + ldr r6, [r3], #4 + vmul.f32 d4, d0, d3 + vmul.f32 d5, d16, d3 + vsub.f32 d4, d6, d4 + vadd.f32 d5, d5, d7 + uxtah r8, r1, r6, ror #16 + uxtah r6, r1, r6 + beq 1f + vld1.32 {d16-d17},[r7,:128],r12 + vld1.32 {d0-d1}, [r2,:128]! + vuzp.32 d17, d16 + vld1.32 {d2}, [r4,:64]! + vuzp.32 d0, d1 + vmul.f32 d6, d16, d2 + vld1.32 {d3}, [r5,:64]! + vmul.f32 d7, d0, d2 + vst2.32 {d4[0],d5[0]}, [r6,:64] + vst2.32 {d4[1],d5[1]}, [r8,:64] + b 1b +1: + vst2.32 {d4[0],d5[0]}, [r6,:64] + vst2.32 {d4[1],d5[1]}, [r8,:64] + + mov r4, r0 + mov r6, r1 + add r0, r0, #16 + bl ff_fft_calc_neon + + mov r12, #1 + ldr lr, [r4, #4] @ nbits + ldr r5, [r4, #12] @ tsin + ldr r4, [r4, #8] @ tcos + lsl r12, r12, lr @ n = 1 << nbits + lsr lr, r12, #3 @ n8 = n >> 3 + + add r4, r4, lr, lsl #2 + add r5, r5, lr, lsl #2 + add r6, r6, lr, lsl #3 + sub r1, r4, #8 + sub r2, r5, #8 + sub r3, r6, #16 + + mov r7, #-16 + mov r12, #-8 + mov r8, r6 + mov r0, r3 + + vld1.32 {d0-d1}, [r3,:128], r7 @ d0 =i1,r1 d1 =i0,r0 + vld1.32 {d20-d21},[r6,:128]! @ d20=i2,r2 d21=i3,r3 + vld1.32 {d18}, [r2,:64], r12 @ d18=s1,s0 + vuzp.32 d20, d21 + vuzp.32 d0, d1 +1: + subs lr, lr, #2 + vmul.f32 d7, d0, d18 + vld1.32 {d19}, [r5,:64]! @ d19=s2,s3 + vmul.f32 d4, d1, d18 + vld1.32 {d16}, [r1,:64], r12 @ d16=c1,c0 + vmul.f32 d5, d21, d19 + vld1.32 {d17}, [r4,:64]! @ d17=c2,c3 + vmul.f32 d6, d20, d19 + vmul.f32 d22, d1, d16 + vmul.f32 d23, d21, d17 + vmul.f32 d24, d0, d16 + vmul.f32 d25, d20, d17 + vadd.f32 d7, d7, d22 + vadd.f32 d6, d6, d23 + vsub.f32 d4, d4, d24 + vsub.f32 d5, d5, d25 + beq 1f + vld1.32 {d0-d1}, [r3,:128], r7 + vld1.32 {d20-d21},[r6,:128]! + vld1.32 {d18}, [r2,:64], r12 + vuzp.32 d20, d21 + vuzp.32 d0, d1 + vrev64.32 q3, q3 + vtrn.32 d4, d6 + vtrn.32 d5, d7 + vswp d5, d6 + vst1.32 {d4-d5}, [r0,:128], r7 + vst1.32 {d6-d7}, [r8,:128]! + b 1b +1: + vrev64.32 q3, q3 + vtrn.32 d4, d6 + vtrn.32 d5, d7 + vswp d5, d6 + vst1.32 {d4-d5}, [r0,:128] + vst1.32 {d6-d7}, [r8,:128] + + pop {r4-r8,pc} +.endfunc + +function ff_imdct_calc_neon, export=1 + push {r4-r6,lr} + + ldr r3, [r0, #4] + mov r4, #1 + mov r5, r1 + lsl r4, r4, r3 + add r1, r1, r4 + + bl ff_imdct_half_neon + + add r0, r5, r4, lsl #2 + add r1, r5, r4, lsl #1 + sub r0, r0, #8 + sub r2, r1, #16 + mov r3, #-16 + mov r6, #-8 + vmov.i32 d30, #1<<31 +1: + vld1.32 {d0-d1}, [r2,:128], r3 + pld [r0, #-16] + vrev64.32 q0, q0 + vld1.32 {d2-d3}, [r1,:128]! + veor d4, d1, d30 + pld [r2, #-16] + vrev64.32 q1, q1 + veor d5, d0, d30 + vst1.32 {d2}, [r0,:64], r6 + vst1.32 {d3}, [r0,:64], r6 + vst1.32 {d4-d5}, [r5,:128]! + subs r4, r4, #16 + bgt 1b + + pop {r4-r6,pc} +.endfunc diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h index 7a0fc47dd8..db19e3f076 100644 --- a/libavcodec/dsputil.h +++ b/libavcodec/dsputil.h @@ -694,11 +694,13 @@ extern FFTSample* const ff_cos_tabs[13]; int ff_fft_init(FFTContext *s, int nbits, int inverse); void ff_fft_permute_c(FFTContext *s, FFTComplex *z); void ff_fft_permute_sse(FFTContext *s, FFTComplex *z); +void ff_fft_permute_neon(FFTContext *s, FFTComplex *z); void ff_fft_calc_c(FFTContext *s, FFTComplex *z); void ff_fft_calc_sse(FFTContext *s, FFTComplex *z); void ff_fft_calc_3dn(FFTContext *s, FFTComplex *z); void ff_fft_calc_3dn2(FFTContext *s, FFTComplex *z); void ff_fft_calc_altivec(FFTContext *s, FFTComplex *z); +void ff_fft_calc_neon(FFTContext *s, FFTComplex *z); /** * Do the permutation needed BEFORE calling ff_fft_calc(). @@ -768,6 +770,8 @@ void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *inpu void ff_imdct_half_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input); void ff_imdct_calc_sse(MDCTContext *s, FFTSample *output, const FFTSample *input); void ff_imdct_half_sse(MDCTContext *s, FFTSample *output, const FFTSample *input); +void ff_imdct_calc_neon(MDCTContext *s, FFTSample *output, const FFTSample *input); +void ff_imdct_half_neon(MDCTContext *s, FFTSample *output, const FFTSample *input); void ff_mdct_calc(MDCTContext *s, FFTSample *out, const FFTSample *input); void ff_mdct_end(MDCTContext *s); diff --git a/libavcodec/fft.c b/libavcodec/fft.c index ad8d8812d1..c030534e2d 100644 --- a/libavcodec/fft.c +++ b/libavcodec/fft.c @@ -64,6 +64,7 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse) float alpha, c1, s1, s2; int split_radix = 1; int av_unused has_vectors; + int revtab_shift = 0; if (nbits < 2 || nbits > 16) goto fail; @@ -112,6 +113,12 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse) s->fft_calc = ff_fft_calc_altivec; split_radix = 0; } +#elif HAVE_NEON + s->fft_permute = ff_fft_permute_neon; + s->fft_calc = ff_fft_calc_neon; + s->imdct_calc = ff_imdct_calc_neon; + s->imdct_half = ff_imdct_half_neon; + revtab_shift = 3; #endif if (split_radix) { @@ -125,7 +132,8 @@ av_cold int ff_fft_init(FFTContext *s, int nbits, int inverse) tab[m/2-i] = tab[i]; } for(i=0; irevtab[-split_radix_permutation(i, n, s->inverse) & (n-1)] = i; + s->revtab[-split_radix_permutation(i, n, s->inverse) & (n-1)] = + i << revtab_shift; s->tmp_buf = av_malloc(n * sizeof(FFTComplex)); } else { int np, nblocks, np2, l; -- cgit v1.2.3