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Code Issues Releases Activity

avfilter: add anlmdn filter x86 SIMD optimizations

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This commit is contained in:
Paul B Mahol
2019-01-09 13:33:02 +01:00
parent 02b6d1dd63
commit dcae5ba322
5 changed files with 185 additions and 10 deletions
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38
libavfilter/af_anlmdn.c
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@@ -27,6 +27,8 @@
#include "audio.h"
#include "formats.h"
#include "af_anlmdndsp.h"
#define SQR(x) ((x) * (x))
typedef struct AudioNLMeansContext {
@@ -49,7 +51,7 @@ typedef struct AudioNLMeansContext {
AVAudioFifo *fifo;
float (*compute_distance)(const float *f1, const float *f2, int K);
AudioNLMDNDSPContext dsp;
} AudioNLMeansContext;
#define OFFSET(x) offsetof(AudioNLMeansContext, x)
@@ -93,7 +95,7 @@ static int query_formats(AVFilterContext *ctx)
return ff_set_common_samplerates(ctx, formats);
}
static float compute_distance_ssd(const float *f1, const float *f2, int K)
static float compute_distance_ssd_c(const float *f1, const float *f2, ptrdiff_t K)
{
float distance = 0.;
@@ -103,6 +105,25 @@ static float compute_distance_ssd(const float *f1, const float *f2, int K)
return distance;
}
static void compute_cache_c(float *cache, const float *f,
ptrdiff_t S, ptrdiff_t K,
ptrdiff_t i, ptrdiff_t jj)
{
int v = 0;
for (int j = jj; j < jj + S; j++, v++)
cache[v] += -SQR(f[i - K - 1] - f[j - K - 1]) + SQR(f[i + K] - f[j + K]);
}
void ff_anlmdn_init(AudioNLMDNDSPContext *dsp)
{
dsp->compute_distance_ssd = compute_distance_ssd_c;
dsp->compute_cache = compute_cache_c;
if (ARCH_X86)
ff_anlmdn_init_x86(dsp);
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
@@ -129,7 +150,7 @@ static int config_output(AVFilterLink *outlink)
if (!s->fifo)
return AVERROR(ENOMEM);
s->compute_distance = compute_distance_ssd;
ff_anlmdn_init(&s->dsp);
return 0;
}
@@ -153,17 +174,14 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int ch, int nb_jobs)
for (int j = i - S; j <= i + S; j++) {
if (i == j)
continue;
cache[v++] = s->compute_distance(f + i, f + j, K);
cache[v++] = s->dsp.compute_distance_ssd(f + i, f + j, K);
}
} else {
for (int j = i - S; j < i; j++, v++)
cache[v] = cache[v] - SQR(f[i - K - 1] - f[j - K - 1]) + SQR(f[i + K] - f[j + K]);
for (int j = i + 1; j <= i + S; j++, v++)
cache[v] = cache[v] - SQR(f[i - K - 1] - f[j - K - 1]) + SQR(f[i + K] - f[j + K]);
s->dsp.compute_cache(cache, f, S, K, i, i - S);
s->dsp.compute_cache(cache + S, f, S, K, i, i + 1);
}
for (int j = 0; j < v; j++) {
for (int j = 0; j < 2 * S; j++) {
const float distance = cache[j];
float w;

40
libavfilter/af_anlmdndsp.h Normal file
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@@ -0,0 +1,40 @@
/*
* Copyright (c) 2019 Paul B Mahol
*
* 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
*/
#ifndef AVFILTER_ANLMDNDSP_H
#define AVFILTER_ANLMDNDSP_H
#include "libavutil/common.h"
#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
typedef struct AudioNLMDNDSPContext {
float (*compute_distance_ssd)(const float *f1, const float *f2, ptrdiff_t K);
void (*compute_cache)(float *cache, const float *f, ptrdiff_t S, ptrdiff_t K,
ptrdiff_t i, ptrdiff_t jj);
} AudioNLMDNDSPContext;
void ff_anlmdn_init(AudioNLMDNDSPContext *s);
void ff_anlmdn_init_x86(AudioNLMDNDSPContext *s);
#endif /* AVFILTER_ANLMDNDSP_H */

2
libavfilter/x86/Makefile
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@@ -1,6 +1,7 @@
OBJS-$(CONFIG_SCENE_SAD) += x86/scene_sad_init.o
OBJS-$(CONFIG_AFIR_FILTER) += x86/af_afir_init.o
OBJS-$(CONFIG_ANLMDN_FILTER) += x86/af_anlmdn_init.o
OBJS-$(CONFIG_BLEND_FILTER) += x86/vf_blend_init.o
OBJS-$(CONFIG_BWDIF_FILTER) += x86/vf_bwdif_init.o
OBJS-$(CONFIG_COLORSPACE_FILTER) += x86/colorspacedsp_init.o
@@ -34,6 +35,7 @@ OBJS-$(CONFIG_YADIF_FILTER) += x86/vf_yadif_init.o
X86ASM-OBJS-$(CONFIG_SCENE_SAD) += x86/scene_sad.o
X86ASM-OBJS-$(CONFIG_AFIR_FILTER) += x86/af_afir.o
X86ASM-OBJS-$(CONFIG_ANLMDN_FILTER) += x86/af_anlmdn.o
X86ASM-OBJS-$(CONFIG_BLEND_FILTER) += x86/vf_blend.o
X86ASM-OBJS-$(CONFIG_BWDIF_FILTER) += x86/vf_bwdif.o
X86ASM-OBJS-$(CONFIG_COLORSPACE_FILTER) += x86/colorspacedsp.o

80
libavfilter/x86/af_anlmdn.asm Normal file
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@@ -0,0 +1,80 @@
;*****************************************************************************
;* x86-optimized functions for anlmdn filter
;* Copyright (c) 2017 Paul B Mahol
;*
;* 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/x86/x86util.asm"
SECTION .text
;------------------------------------------------------------------------------
; float ff_compute_distance_ssd(float *f1, const float *f2, ptrdiff_t len)
;------------------------------------------------------------------------------
INIT_XMM sse
cglobal compute_distance_ssd, 3,5,3, f1, f2, len, r, x
mov xq, lenq
shl xq, 2
neg xq
add f1q, xq
add f2q, xq
xor xq, xq
shl lenq, 1
add lenq, 1
shl lenq, 2
mov rq, lenq
and rq, mmsize - 1
xorps m0, m0
cmp lenq, mmsize
jl .loop1
sub lenq, rq
ALIGN 16
.loop0:
movups m1, [f1q + xq]
movups m2, [f2q + xq]
subps m1, m2
mulps m1, m1
addps m0, m1
add xq, mmsize
cmp xq, lenq
jl .loop0
movhlps xmm1, xmm0
addps xmm0, xmm1
movss xmm1, xmm0
shufps xmm0, xmm0, 1
addss xmm0, xmm1
cmp rq, 0
je .end
add lenq, rq
.loop1:
movss xm1, [f1q + xq]
subss xm1, [f2q + xq]
mulss xm1, xm1
addss xm0, xm1
add xq, 4
cmp xq, lenq
jl .loop1
.end:
%if ARCH_X86_64 == 0
movss r0m, xm0
fld dword r0m
%endif
RET

35
libavfilter/x86/af_anlmdn_init.c Normal file
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@@ -0,0 +1,35 @@
/*
* 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 "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavfilter/af_anlmdndsp.h"
float ff_compute_distance_ssd_sse(const float *f1, const float *f2,
ptrdiff_t len);
av_cold void ff_anlmdn_init_x86(AudioNLMDNDSPContext *s)
{
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_SSE(cpu_flags)) {
s->compute_distance_ssd = ff_compute_distance_ssd_sse;
}
}