diff options
author | Måns Rullgård <mans@mansr.com> | 2010-03-23 03:35:02 +0000 |
---|---|---|
committer | Måns Rullgård <mans@mansr.com> | 2010-03-23 03:35:02 +0000 |
commit | a8bb9ea532b718d48bbfec3f94d7cd56cc15c472 (patch) | |
tree | 7d046219695d409bb0166d87d94f9c43d77514dc | |
parent | fc4a2d1e8cc06766677d33f4ba4777e256a709fc (diff) | |
download | ffmpeg-a8bb9ea532b718d48bbfec3f94d7cd56cc15c472.tar.gz |
ARM: NEON optimised RDFT
Originally committed as revision 22641 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r-- | libavcodec/arm/Makefile | 2 | ||||
-rw-r--r-- | libavcodec/arm/fft_init_arm.c | 10 | ||||
-rw-r--r-- | libavcodec/arm/rdft_neon.S | 151 | ||||
-rw-r--r-- | libavcodec/fft.h | 2 | ||||
-rw-r--r-- | libavcodec/rdft.c | 3 |
5 files changed, 168 insertions, 0 deletions
diff --git a/libavcodec/arm/Makefile b/libavcodec/arm/Makefile index d05a07e756..dc6382bdaf 100644 --- a/libavcodec/arm/Makefile +++ b/libavcodec/arm/Makefile @@ -27,6 +27,8 @@ NEON-OBJS-$(CONFIG_FFT) += arm/fft_neon.o \ NEON-OBJS-$(CONFIG_MDCT) += arm/mdct_neon.o \ +NEON-OBJS-$(CONFIG_RDFT) += arm/rdft_neon.o \ + NEON-OBJS-$(CONFIG_H264DSP) += arm/h264dsp_neon.o \ arm/h264idct_neon.o \ arm/h264pred_neon.o \ diff --git a/libavcodec/arm/fft_init_arm.c b/libavcodec/arm/fft_init_arm.c index b2acf929f5..dfcd968c94 100644 --- a/libavcodec/arm/fft_init_arm.c +++ b/libavcodec/arm/fft_init_arm.c @@ -27,6 +27,8 @@ void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input); void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input); +void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z); + av_cold void ff_fft_init_arm(FFTContext *s) { if (HAVE_NEON) { @@ -38,3 +40,11 @@ av_cold void ff_fft_init_arm(FFTContext *s) s->permutation = FF_MDCT_PERM_INTERLEAVE; } } + +#if CONFIG_RDFT +av_cold void ff_rdft_init_arm(RDFTContext *s) +{ + if (HAVE_NEON) + s->rdft_calc = ff_rdft_calc_neon; +} +#endif diff --git a/libavcodec/arm/rdft_neon.S b/libavcodec/arm/rdft_neon.S new file mode 100644 index 0000000000..4f8f529ee9 --- /dev/null +++ b/libavcodec/arm/rdft_neon.S @@ -0,0 +1,151 @@ +/* + * ARM NEON optimised RDFT + * Copyright (c) 2009 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 "asm.S" + + preserve8 + +function ff_rdft_calc_neon, export=1 + push {r4-r8,lr} + + ldr r6, [r0, #4] @ inverse + mov r4, r0 + mov r5, r1 + + lsls r6, r6, #31 + bne 1f + add r0, r4, #20 + bl ff_fft_permute_neon + add r0, r4, #20 + mov r1, r5 + bl ff_fft_calc_neon +1: + ldr r12, [r4, #0] @ nbits + mov r2, #1 + lsl r12, r2, r12 + add r0, r5, #8 + add r1, r5, r12, lsl #2 + lsr r12, r12, #2 + ldr r2, [r4, #12] @ tcos + sub r12, r12, #2 + ldr r3, [r4, #16] @ tsin + mov r7, r0 + sub r1, r1, #8 + mov lr, r1 + mov r8, #-8 + vld1.32 {d0}, [r0,:64]! @ d1[0,1] + vld1.32 {d1}, [r1,:64], r8 @ d2[0,1] + vld1.32 {d4}, [r2,:64]! @ tcos[i] + vld1.32 {d5}, [r3,:64]! @ tsin[i] + vmov.f32 d18, #0.5 @ k1 + vdup.32 d19, r6 + pld [r0, #32] + veor d19, d18, d19 @ k2 + vmov.i32 d16, #0 + vmov.i32 d17, #1<<31 + pld [r1, #-32] + vtrn.32 d16, d17 + pld [r2, #32] + vrev64.32 d16, d16 @ d16=1,0 d17=0,1 + pld [r3, #32] +2: + veor q1, q0, q8 @ -d1[0],d1[1], d2[0],-d2[1] + vld1.32 {d24}, [r0,:64]! @ d1[0,1] + vadd.f32 d0, d0, d3 @ d1[0]+d2[0], d1[1]-d2[1] + vld1.32 {d25}, [r1,:64], r8 @ d2[0,1] + vadd.f32 d1, d2, d1 @ -d1[0]+d2[0], d1[1]+d2[1] + veor q3, q12, q8 @ -d1[0],d1[1], d2[0],-d2[1] + pld [r0, #32] + vmul.f32 q10, q0, q9 @ ev.re, ev.im, od.im, od.re + pld [r1, #-32] + vadd.f32 d0, d24, d7 @ d1[0]+d2[0], d1[1]-d2[1] + vadd.f32 d1, d6, d25 @ -d1[0]+d2[0], d1[1]+d2[1] + vmul.f32 q11, q0, q9 @ ev.re, ev.im, od.im, od.re + veor d7, d21, d16 @ -od.im, od.re + vrev64.32 d3, d21 @ od.re, od.im + veor d6, d20, d17 @ ev.re,-ev.im + veor d2, d3, d16 @ -od.re, od.im + vmla.f32 d20, d3, d4[1] + vmla.f32 d20, d7, d5[1] + vmla.f32 d6, d2, d4[1] + vmla.f32 d6, d21, d5[1] + vld1.32 {d4}, [r2,:64]! @ tcos[i] + veor d7, d23, d16 @ -od.im, od.re + vld1.32 {d5}, [r3,:64]! @ tsin[i] + veor d24, d22, d17 @ ev.re,-ev.im + vrev64.32 d3, d23 @ od.re, od.im + pld [r2, #32] + veor d2, d3, d16 @ -od.re, od.im + pld [r3, #32] + vmla.f32 d22, d3, d4[0] + vmla.f32 d22, d7, d5[0] + vmla.f32 d24, d2, d4[0] + vmla.f32 d24, d23, d5[0] + vld1.32 {d0}, [r0,:64]! @ d1[0,1] + vld1.32 {d1}, [r1,:64], r8 @ d2[0,1] + vst1.32 {d20}, [r7,:64]! + vst1.32 {d6}, [lr,:64], r8 + vst1.32 {d22}, [r7,:64]! + vst1.32 {d24}, [lr,:64], r8 + subs r12, r12, #2 + bgt 2b + + veor q1, q0, q8 @ -d1[0],d1[1], d2[0],-d2[1] + vadd.f32 d0, d0, d3 @ d1[0]+d2[0], d1[1]-d2[1] + vadd.f32 d1, d2, d1 @ -d1[0]+d2[0], d1[1]+d2[1] + ldr r2, [r4, #8] @ sign_convention + vmul.f32 q10, q0, q9 @ ev.re, ev.im, od.im, od.re + add r0, r0, #4 + bfc r2, #0, #31 + vld1.32 {d0[0]}, [r0,:32] + veor d7, d21, d16 @ -od.im, od.re + vrev64.32 d3, d21 @ od.re, od.im + veor d6, d20, d17 @ ev.re,-ev.im + vld1.32 {d22}, [r5,:64] + vdup.32 d1, r2 + vmov d23, d22 + veor d2, d3, d16 @ -od.re, od.im + vtrn.32 d22, d23 + veor d0, d0, d1 + veor d23, d23, d17 + vmla.f32 d20, d3, d4[1] + vmla.f32 d20, d7, d5[1] + vmla.f32 d6, d2, d4[1] + vmla.f32 d6, d21, d5[1] + vadd.f32 d22, d22, d23 + vst1.32 {d20}, [r7,:64] + vst1.32 {d6}, [lr,:64] + vst1.32 {d0[0]}, [r0,:32] + vst1.32 {d22}, [r5,:64] + + cmp r6, #0 + popeq {r4-r8,pc} + + vmul.f32 d22, d22, d18 + vst1.32 {d22}, [r5,:64] + add r0, r4, #20 + mov r1, r5 + bl ff_fft_permute_neon + add r0, r4, #20 + mov r1, r5 + pop {r4-r8,lr} + b ff_fft_calc_neon +endfunc diff --git a/libavcodec/fft.h b/libavcodec/fft.h index df7ded99a8..6a8f41e79e 100644 --- a/libavcodec/fft.h +++ b/libavcodec/fft.h @@ -207,6 +207,8 @@ struct RDFTContext { int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans); void ff_rdft_end(RDFTContext *s); +void ff_rdft_init_arm(RDFTContext *s); + static av_always_inline void ff_rdft_calc(RDFTContext *s, FFTSample *data) { s->rdft_calc(s, data); diff --git a/libavcodec/rdft.c b/libavcodec/rdft.c index 29fedc8767..457abeea78 100644 --- a/libavcodec/rdft.c +++ b/libavcodec/rdft.c @@ -121,6 +121,9 @@ av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans) } #endif s->rdft_calc = ff_rdft_calc_c; + + if (ARCH_ARM) ff_rdft_init_arm(s); + return 0; } |