From 83f9da77684e7ea0d8e9f9712ec716424140043a Mon Sep 17 00:00:00 2001 From: Ruiling Song Date: Wed, 15 May 2019 17:54:10 +0800 Subject: [PATCH] avfilter/vf_gblur: add x86 SIMD optimizations The horizontal pass get ~2x performance with the patch under single thread. Tested overall performance using the command(avx2 enabled): ./ffmpeg -i 1080p.mp4 -vf gblur -f null /dev/null ./ffmpeg -i 1080p.mp4 -vf gblur=threads=1 -f null /dev/null For single thread, the fps improves from 43 to 60, about 40%. For multi-thread, the fps improves from 110 to 130, about 20%. Signed-off-by: Ruiling Song --- libavfilter/gblur.h | 55 ++++++++++ libavfilter/vf_gblur.c | 75 ++++++------- libavfilter/x86/Makefile | 2 + libavfilter/x86/vf_gblur.asm | 185 ++++++++++++++++++++++++++++++++ libavfilter/x86/vf_gblur_init.c | 36 +++++++ 5 files changed, 312 insertions(+), 41 deletions(-) create mode 100644 libavfilter/gblur.h create mode 100644 libavfilter/x86/vf_gblur.asm create mode 100644 libavfilter/x86/vf_gblur_init.c diff --git a/libavfilter/gblur.h b/libavfilter/gblur.h new file mode 100644 index 0000000000..87129801de --- /dev/null +++ b/libavfilter/gblur.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2011 Pascal Getreuer + * Copyright (c) 2016 Paul B Mahol + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef AVFILTER_GBLUR_H +#define AVFILTER_GBLUR_H +#include "avfilter.h" + +typedef struct GBlurContext { + const AVClass *class; + + float sigma; + float sigmaV; + int steps; + int planes; + + int depth; + int planewidth[4]; + int planeheight[4]; + float *buffer; + float boundaryscale; + float boundaryscaleV; + float postscale; + float postscaleV; + float nu; + float nuV; + int nb_planes; + void (*horiz_slice)(float *buffer, int width, int height, int steps, float nu, float bscale); +} GBlurContext; +void ff_gblur_init(GBlurContext *s); +void ff_gblur_init_x86(GBlurContext *s); +#endif diff --git a/libavfilter/vf_gblur.c b/libavfilter/vf_gblur.c index b91a8c074a..e71b33da80 100644 --- a/libavfilter/vf_gblur.c +++ b/libavfilter/vf_gblur.c @@ -30,30 +30,10 @@ #include "libavutil/pixdesc.h" #include "avfilter.h" #include "formats.h" +#include "gblur.h" #include "internal.h" #include "video.h" -typedef struct GBlurContext { - const AVClass *class; - - float sigma; - float sigmaV; - int steps; - int planes; - - int depth; - int planewidth[4]; - int planeheight[4]; - float *buffer; - float boundaryscale; - float boundaryscaleV; - float postscale; - float postscaleV; - float nu; - float nuV; - int nb_planes; -} GBlurContext; - #define OFFSET(x) offsetof(GBlurContext, x) #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM @@ -72,6 +52,28 @@ typedef struct ThreadData { int width; } ThreadData; +static void horiz_slice_c(float *buffer, int width, int height, int steps, + float nu, float bscale) +{ + int step, x, y; + float *ptr; + for (y = 0; y < height; y++) { + for (step = 0; step < steps; step++) { + ptr = buffer + width * y; + ptr[0] *= bscale; + + /* Filter rightwards */ + for (x = 1; x < width; x++) + ptr[x] += nu * ptr[x - 1]; + ptr[x = width - 1] *= bscale; + + /* Filter leftwards */ + for (; x > 0; x--) + ptr[x - 1] += nu * ptr[x]; + } + } +} + static int filter_horizontally(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) { GBlurContext *s = ctx->priv; @@ -84,27 +86,10 @@ static int filter_horizontally(AVFilterContext *ctx, void *arg, int jobnr, int n const int steps = s->steps; const float nu = s->nu; float *buffer = s->buffer; - int y, x, step; - float *ptr; - - /* Filter horizontally along each row */ - for (y = slice_start; y < slice_end; y++) { - for (step = 0; step < steps; step++) { - ptr = buffer + width * y; - ptr[0] *= boundaryscale; - - /* Filter rightwards */ - for (x = 1; x < width; x++) - ptr[x] += nu * ptr[x - 1]; - - ptr[x = width - 1] *= boundaryscale; - - /* Filter leftwards */ - for (; x > 0; x--) - ptr[x - 1] += nu * ptr[x]; - } - } + s->horiz_slice(buffer + width * slice_start, width, slice_end - slice_start, + steps, nu, boundaryscale); + emms_c(); return 0; } @@ -231,6 +216,13 @@ static int query_formats(AVFilterContext *ctx) return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); } +void ff_gblur_init(GBlurContext *s) +{ + s->horiz_slice = horiz_slice_c; + if (ARCH_X86_64) + ff_gblur_init_x86(s); +} + static int config_input(AVFilterLink *inlink) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); @@ -251,6 +243,7 @@ static int config_input(AVFilterLink *inlink) if (s->sigmaV < 0) { s->sigmaV = s->sigma; } + ff_gblur_init(s); return 0; } diff --git a/libavfilter/x86/Makefile b/libavfilter/x86/Makefile index 17499f14da..6b0361bed2 100644 --- a/libavfilter/x86/Makefile +++ b/libavfilter/x86/Makefile @@ -7,6 +7,7 @@ OBJS-$(CONFIG_BWDIF_FILTER) += x86/vf_bwdif_init.o OBJS-$(CONFIG_COLORSPACE_FILTER) += x86/colorspacedsp_init.o OBJS-$(CONFIG_EQ_FILTER) += x86/vf_eq.o OBJS-$(CONFIG_FSPP_FILTER) += x86/vf_fspp_init.o +OBJS-$(CONFIG_GBLUR_FILTER) += x86/vf_gblur_init.o OBJS-$(CONFIG_GRADFUN_FILTER) += x86/vf_gradfun_init.o OBJS-$(CONFIG_FRAMERATE_FILTER) += x86/vf_framerate_init.o OBJS-$(CONFIG_HFLIP_FILTER) += x86/vf_hflip_init.o @@ -41,6 +42,7 @@ X86ASM-OBJS-$(CONFIG_BWDIF_FILTER) += x86/vf_bwdif.o X86ASM-OBJS-$(CONFIG_COLORSPACE_FILTER) += x86/colorspacedsp.o X86ASM-OBJS-$(CONFIG_FRAMERATE_FILTER) += x86/vf_framerate.o X86ASM-OBJS-$(CONFIG_FSPP_FILTER) += x86/vf_fspp.o +X86ASM-OBJS-$(CONFIG_GBLUR_FILTER) += x86/vf_gblur.o X86ASM-OBJS-$(CONFIG_GRADFUN_FILTER) += x86/vf_gradfun.o X86ASM-OBJS-$(CONFIG_HFLIP_FILTER) += x86/vf_hflip.o X86ASM-OBJS-$(CONFIG_HQDN3D_FILTER) += x86/vf_hqdn3d.o diff --git a/libavfilter/x86/vf_gblur.asm b/libavfilter/x86/vf_gblur.asm new file mode 100644 index 0000000000..762c953c85 --- /dev/null +++ b/libavfilter/x86/vf_gblur.asm @@ -0,0 +1,185 @@ +;***************************************************************************** +;* x86-optimized functions for gblur filter +;* +;* 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 + +; void ff_horiz_slice_sse4(float *ptr, int width, int height, int steps, +; float nu, float bscale) + +%macro HORIZ_SLICE 0 +%if UNIX64 +cglobal horiz_slice, 4, 9, 9, ptr, width, height, steps, x, y, step, stride, remain +%else +cglobal horiz_slice, 4, 9, 9, ptr, width, height, steps, nu, bscale, x, y, step, stride, remain +%endif +%if WIN64 + movss m0, num + movss m1, bscalem + DEFINE_ARGS ptr, width, height, steps, x, y, step, stride, remain +%endif + movsxdifnidn widthq, widthd + + mulss m2, m0, m0 ; nu ^ 2 + mulss m3, m2, m0 ; nu ^ 3 + mulss m4, m3, m0 ; nu ^ 4 + xor xq, xq + xor yd, yd + mov strideq, widthq + ; stride = width * 4 + shl strideq, 2 + ; w = w - ((w - 1) & 3) + mov remainq, widthq + sub remainq, 1 + and remainq, 3 + sub widthq, remainq + + shufps m0, m0, 0 + shufps m2, m2, 0 + shufps m3, m3, 0 + shufps m4, m4, 0 + +.loop_y: + xor stepd, stepd + + .loop_step: + ; p0 *= bscale + mulss m5, m1, [ptrq + xq * 4] + movss [ptrq + xq * 4], m5 + inc xq + ; filter rightwards + ; Here we are vectorizing the c version by 4 + ; for (x = 1; x < width; x++) + ; ptr[x] += nu * ptr[x - 1]; + ; let p0 stands for ptr[x-1], the data from last loop + ; and [p1,p2,p3,p4] be the vector data for this loop. + ; Unrolling the loop, we get: + ; p1' = p1 + p0*nu + ; p2' = p2 + p1*nu + p0*nu^2 + ; p3' = p3 + p2*nu + p1*nu^2 + p0*nu^3 + ; p4' = p4 + p3*nu + p2*nu^2 + p1*nu^3 + p0*nu^4 + ; so we can do it in simd: + ; [p1',p2',p3',p4'] = [p1,p2,p3,p4] + [p0,p1,p2,p3]*nu + + ; [0,p0,p1,p2]*nu^2 + [0,0,p0,p1]*nu^3 + + ; [0,0,0,p0]*nu^4 + + .loop_x: + movu m6, [ptrq + xq * 4] ; s = [p1,p2,p3,p4] + pslldq m7, m6, 4 ; [0, p1,p2,p3] + movss m7, m5 ; [p0,p1,p2,p3] + FMULADD_PS m6, m7, m0, m6, m8 ; s += [p0,p1,p2,p3] * nu + pslldq m7, 4 ; [0,p0,p1,p2] + FMULADD_PS m6, m7, m2, m6, m8 ; s += [0,p0,p1,p2] * nu^2 + pslldq m7, 4 + FMULADD_PS m6, m7, m3, m6, m8 ; s += [0,0,p0,p1] * nu^3 + pslldq m7, 4 + FMULADD_PS m6, m7, m4, m6, m8 ; s += [0,0,0,p0] * nu^4 + movu [ptrq + xq * 4], m6 + shufps m5, m6, m6, q3333 + add xq, 4 + cmp xq, widthq + jl .loop_x + + add widthq, remainq + cmp xq, widthq + je .end_scalar + + .loop_scalar: + ; ptr[x] += nu * ptr[x-1] + movss m5, [ptrq + 4*xq - 4] + mulss m5, m0 + addss m5, [ptrq + 4*xq] + movss [ptrq + 4*xq], m5 + inc xq + cmp xq, widthq + jl .loop_scalar + .end_scalar: + ; ptr[width - 1] *= bscale + dec xq + mulss m5, m1, [ptrq + 4*xq] + movss [ptrq + 4*xq], m5 + shufps m5, m5, 0 + + ; filter leftwards + ; for (; x > 0; x--) + ; ptr[x - 1] += nu * ptr[x]; + ; The idea here is basically the same as filter rightwards. + ; But we need to take care as the data layout is different. + ; Let p0 stands for the ptr[x], which is the data from last loop. + ; The way we do it in simd as below: + ; [p-4', p-3', p-2', p-1'] = [p-4, p-3, p-2, p-1] + ; + [p-3, p-2, p-1, p0] * nu + ; + [p-2, p-1, p0, 0] * nu^2 + ; + [p-1, p0, 0, 0] * nu^3 + ; + [p0, 0, 0, 0] * nu^4 + .loop_x_back: + sub xq, 4 + movu m6, [ptrq + xq * 4] ; s = [p-4, p-3, p-2, p-1] + psrldq m7, m6, 4 ; [p-3, p-2, p-1, 0 ] + blendps m7, m5, 0x8 ; [p-3, p-2, p-1, p0 ] + FMULADD_PS m6, m7, m0, m6, m8 ; s+= [p-3, p-2, p-1, p0 ] * nu + psrldq m7, 4 ; + FMULADD_PS m6, m7, m2, m6, m8 ; s+= [p-2, p-1, p0, 0] * nu^2 + psrldq m7, 4 + FMULADD_PS m6, m7, m3, m6, m8 ; s+= [p-1, p0, 0, 0] * nu^3 + psrldq m7, 4 + FMULADD_PS m6, m7, m4, m6, m8 ; s+= [p0, 0, 0, 0] * nu^4 + movu [ptrq + xq * 4], m6 + shufps m5, m6, m6, 0 ; m5 = [p-4', p-4', p-4', p-4'] + cmp xq, remainq + jg .loop_x_back + + cmp xq, 0 + je .end_scalar_back + + .loop_scalar_back: + ; ptr[x-1] += nu * ptr[x] + movss m5, [ptrq + 4*xq] + mulss m5, m0 + addss m5, [ptrq + 4*xq - 4] + movss [ptrq + 4*xq - 4], m5 + dec xq + cmp xq, 0 + jg .loop_scalar_back + .end_scalar_back: + + ; reset aligned width for next line + sub widthq, remainq + + inc stepd + cmp stepd, stepsd + jl .loop_step + + add ptrq, strideq + inc yd + cmp yd, heightd + jl .loop_y + + RET +%endmacro + +%if ARCH_X86_64 +INIT_XMM sse4 +HORIZ_SLICE + +INIT_XMM avx2 +HORIZ_SLICE +%endif diff --git a/libavfilter/x86/vf_gblur_init.c b/libavfilter/x86/vf_gblur_init.c new file mode 100644 index 0000000000..b068edc598 --- /dev/null +++ b/libavfilter/x86/vf_gblur_init.c @@ -0,0 +1,36 @@ +/* + * + * 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/attributes.h" +#include "libavutil/cpu.h" +#include "libavutil/x86/cpu.h" +#include "libavfilter/gblur.h" + +void ff_horiz_slice_sse4(float *ptr, int width, int height, int steps, float nu, float bscale); +void ff_horiz_slice_avx2(float *ptr, int width, int height, int steps, float nu, float bscale); + +av_cold void ff_gblur_init_x86(GBlurContext *s) +{ + int cpu_flags = av_get_cpu_flags(); + + if (EXTERNAL_SSE4(cpu_flags)) + s->horiz_slice = ff_horiz_slice_sse4; + if (EXTERNAL_AVX2(cpu_flags)) + s->horiz_slice = ff_horiz_slice_avx2; +}