[FFmpeg-devel] [PATCH] avfilter/vf_lut3d: add x86-optimized tetrahedral interpolation

Mark Reid mindmark at gmail.com
Mon Oct 4 06:49:52 EEST 2021


On Wed, Sep 29, 2021 at 10:27 AM Mark Reid <mindmark at gmail.com> wrote:

>
>
> On Tue, Sep 28, 2021 at 6:38 PM chen <chenm003 at 163.com> wrote:
>
>> Hello,
>>
>>
>> Excuse me, how about FMADD on AVX2 platform?
>>
>>
>> For example
>> +    mulps m7, m7, m14
>> +    addps m0, m0, m7
>>
>> ==>
>>
>>
>> fmadd231ps m0,m7,m14
>>
>>
> Interesting, does having AVX2 guarantee having FMA instructions?
>
>

I'm still not 100% certain all AVX2 cpus have FMA instructions so I'll
add cpuflags check for FMA too. I also came up with a faster way to
calculate x0,x1,x2 without the lookup table.
will send a new patch.


>
>> Regards,
>> Min Chen
>>
>>
>>  2021-09-29 09:18:05,mindmark at gmail.com
>> >From: Mark Reid <mindmark at gmail.com>
>> >
>> >Only supports float and 16bit planer formats at the momoment.
>> >Mainly focused on AVX and AVX2 optimizations, but SSE2 does seem offer
>> some
>> >speed gains.
>> >
>> >f32 1920x1080 1 thread with prelut
>> >c impl
>> >1389936500 UNITS in lut3d->interp,       1 runs,      0 skips
>> >1425800240 UNITS in lut3d->interp,       2 runs,      0 skips
>> >1433312777 UNITS in lut3d->interp,       4 runs,      0 skips
>> >1443346798 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >sse2
>> >948662320 UNITS in lut3d->interp,       1 runs,      0 skips
>> >1101247540 UNITS in lut3d->interp,       2 runs,      0 skips
>> >1050645695 UNITS in lut3d->interp,       4 runs,      0 skips
>> >1041102937 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >avx
>> >633837000 UNITS in lut3d->interp,       1 runs,      0 skips
>> >669452850 UNITS in lut3d->interp,       2 runs,      0 skips
>> >650716580 UNITS in lut3d->interp,       4 runs,      0 skips
>> >644698550 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >avx2
>> >354940020 UNITS in lut3d->interp,       1 runs,      0 skips
>> >362384340 UNITS in lut3d->interp,       2 runs,      0 skips
>> >356799020 UNITS in lut3d->interp,       4 runs,      0 skips
>> >357276815 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >gbrap16 1920x1080 1 thread with prelut
>> >c impl
>> >1445071160 UNITS in lut3d->interp,       1 runs,      0 skips
>> >1477959120 UNITS in lut3d->interp,       2 runs,      0 skips
>> >1472102670 UNITS in lut3d->interp,       4 runs,      0 skips
>> >1462579330 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >sse2
>> >1035437580 UNITS in lut3d->interp,       1 runs,      0 skips
>> >1050139710 UNITS in lut3d->interp,       2 runs,      0 skips
>> >1070147205 UNITS in lut3d->interp,       4 runs,      0 skips
>> >1064583037 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >avx
>> >678089880 UNITS in lut3d->interp,       1 runs,      0 skips
>> >679112485 UNITS in lut3d->interp,       2 runs,      0 skips
>> >695527212 UNITS in lut3d->interp,       4 runs,      0 skips
>> >691300053 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >avx2
>> >372671340 UNITS in lut3d->interp,       1 runs,      0 skips
>> >373449870 UNITS in lut3d->interp,       2 runs,      0 skips
>> >383725625 UNITS in lut3d->interp,       4 runs,      0 skips
>> >382860848 UNITS in lut3d->interp,       8 runs,      0 skips
>> >
>> >---
>> > libavfilter/lut3d.h             |  83 ++++
>> > libavfilter/vf_lut3d.c          |  61 +--
>> > libavfilter/x86/Makefile        |   2 +
>> > libavfilter/x86/vf_lut3d.asm    | 757 ++++++++++++++++++++++++++++++++
>> > libavfilter/x86/vf_lut3d_init.c |  88 ++++
>> > 5 files changed, 935 insertions(+), 56 deletions(-)
>> > create mode 100644 libavfilter/lut3d.h
>> > create mode 100644 libavfilter/x86/vf_lut3d.asm
>> > create mode 100644 libavfilter/x86/vf_lut3d_init.c
>> >
>> >diff --git a/libavfilter/lut3d.h b/libavfilter/lut3d.h
>> >new file mode 100644
>> >index 0000000000..ded2a036a5
>> >--- /dev/null
>> >+++ b/libavfilter/lut3d.h
>> >@@ -0,0 +1,83 @@
>> >+/*
>> >+ * Copyright (c) 2013 Clément Bœsch
>> >+ * Copyright (c) 2018 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_LUT3D_H
>> >+#define AVFILTER_LUT3D_H
>> >+
>> >+#include "libavutil/pixdesc.h"
>> >+#include "framesync.h"
>> >+#include "avfilter.h"
>> >+
>> >+enum interp_mode {
>> >+    INTERPOLATE_NEAREST,
>> >+    INTERPOLATE_TRILINEAR,
>> >+    INTERPOLATE_TETRAHEDRAL,
>> >+    INTERPOLATE_PYRAMID,
>> >+    INTERPOLATE_PRISM,
>> >+    NB_INTERP_MODE
>> >+};
>> >+
>> >+struct rgbvec {
>> >+    float r, g, b;
>> >+};
>> >+
>> >+/* 3D LUT don't often go up to level 32, but it is common to have a
>> Hald CLUT
>> >+ * of 512x512 (64x64x64) */
>> >+#define MAX_LEVEL 256
>> >+#define PRELUT_SIZE 65536
>> >+
>> >+typedef struct Lut3DPreLut {
>> >+    int size;
>> >+    float min[3];
>> >+    float max[3];
>> >+    float scale[3];
>> >+    float* lut[3];
>> >+} Lut3DPreLut;
>> >+
>> >+typedef struct LUT3DContext {
>> >+    const AVClass *class;
>> >+    struct rgbvec *lut;
>> >+    int lutsize;
>> >+    int lutsize2;
>> >+    struct rgbvec scale;
>> >+    int interpolation;          ///<interp_mode
>> >+    char *file;
>> >+    uint8_t rgba_map[4];
>> >+    int step;
>> >+    avfilter_action_func *interp;
>> >+    Lut3DPreLut prelut;
>> >+#if CONFIG_HALDCLUT_FILTER
>> >+    uint8_t clut_rgba_map[4];
>> >+    int clut_step;
>> >+    int clut_bits;
>> >+    int clut_planar;
>> >+    int clut_float;
>> >+    int clut_width;
>> >+    FFFrameSync fs;
>> >+#endif
>> >+} LUT3DContext;
>> >+
>> >+typedef struct ThreadData {
>> >+    AVFrame *in, *out;
>> >+} ThreadData;
>> >+
>> >+void ff_lut3d_init_x86(LUT3DContext *s, const AVPixFmtDescriptor *desc);
>> >+
>> >+#endif /* AVFILTER_LUT3D_H */
>> >\ No newline at end of file
>> >diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
>> >index 9fbda833b9..1fd0af06db 100644
>> >--- a/libavfilter/vf_lut3d.c
>> >+++ b/libavfilter/vf_lut3d.c
>> >@@ -31,73 +31,18 @@
>> > #include "libavutil/intreadwrite.h"
>> > #include "libavutil/intfloat.h"
>> > #include "libavutil/avassert.h"
>> >-#include "libavutil/pixdesc.h"
>> > #include "libavutil/avstring.h"
>> >-#include "avfilter.h"
>> > #include "drawutils.h"
>> > #include "formats.h"
>> >-#include "framesync.h"
>> > #include "internal.h"
>> > #include "video.h"
>> >+#include "lut3d.h"
>> >
>> > #define R 0
>> > #define G 1
>> > #define B 2
>> > #define A 3
>> >
>> >-enum interp_mode {
>> >-    INTERPOLATE_NEAREST,
>> >-    INTERPOLATE_TRILINEAR,
>> >-    INTERPOLATE_TETRAHEDRAL,
>> >-    INTERPOLATE_PYRAMID,
>> >-    INTERPOLATE_PRISM,
>> >-    NB_INTERP_MODE
>> >-};
>> >-
>> >-struct rgbvec {
>> >-    float r, g, b;
>> >-};
>> >-
>> >-/* 3D LUT don't often go up to level 32, but it is common to have a
>> Hald CLUT
>> >- * of 512x512 (64x64x64) */
>> >-#define MAX_LEVEL 256
>> >-#define PRELUT_SIZE 65536
>> >-
>> >-typedef struct Lut3DPreLut {
>> >-    int size;
>> >-    float min[3];
>> >-    float max[3];
>> >-    float scale[3];
>> >-    float* lut[3];
>> >-} Lut3DPreLut;
>> >-
>> >-typedef struct LUT3DContext {
>> >-    const AVClass *class;
>> >-    int interpolation;          ///<interp_mode
>> >-    char *file;
>> >-    uint8_t rgba_map[4];
>> >-    int step;
>> >-    avfilter_action_func *interp;
>> >-    struct rgbvec scale;
>> >-    struct rgbvec *lut;
>> >-    int lutsize;
>> >-    int lutsize2;
>> >-    Lut3DPreLut prelut;
>> >-#if CONFIG_HALDCLUT_FILTER
>> >-    uint8_t clut_rgba_map[4];
>> >-    int clut_step;
>> >-    int clut_bits;
>> >-    int clut_planar;
>> >-    int clut_float;
>> >-    int clut_width;
>> >-    FFFrameSync fs;
>> >-#endif
>> >-} LUT3DContext;
>> >-
>> >-typedef struct ThreadData {
>> >-    AVFrame *in, *out;
>> >-} ThreadData;
>> >-
>> > #define OFFSET(x) offsetof(LUT3DContext, x)
>> > #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
>> > #define TFLAGS
>> AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
>> >@@ -1207,6 +1152,10 @@ static int config_input(AVFilterLink *inlink)
>> >         av_assert0(0);
>> >     }
>> >
>> >+    if (ARCH_X86) {
>> >+        ff_lut3d_init_x86(lut3d, desc);
>> >+    }
>> >+
>> >     return 0;
>> > }
>> >
>> >diff --git a/libavfilter/x86/Makefile b/libavfilter/x86/Makefile
>> >index 016a5b3511..a29941eaeb 100644
>> >--- a/libavfilter/x86/Makefile
>> >+++ b/libavfilter/x86/Makefile
>> >@@ -17,6 +17,7 @@ OBJS-$(CONFIG_HQDN3D_FILTER)                 +=
>> x86/vf_hqdn3d_init.o
>> > OBJS-$(CONFIG_IDET_FILTER)                   += x86/vf_idet_init.o
>> > OBJS-$(CONFIG_INTERLACE_FILTER)              += x86/vf_tinterlace_init.o
>> > OBJS-$(CONFIG_LIMITER_FILTER)                += x86/vf_limiter_init.o
>> >+OBJS-$(CONFIG_LUT3D_FILTER)                  += x86/vf_lut3d_init.o
>> > OBJS-$(CONFIG_MASKEDCLAMP_FILTER)            +=
>> x86/vf_maskedclamp_init.o
>> > OBJS-$(CONFIG_MASKEDMERGE_FILTER)            +=
>> x86/vf_maskedmerge_init.o
>> > OBJS-$(CONFIG_NOISE_FILTER)                  += x86/vf_noise.o
>> >@@ -57,6 +58,7 @@ X86ASM-OBJS-$(CONFIG_HQDN3D_FILTER)          +=
>> x86/vf_hqdn3d.o
>> > X86ASM-OBJS-$(CONFIG_IDET_FILTER)            += x86/vf_idet.o
>> > X86ASM-OBJS-$(CONFIG_INTERLACE_FILTER)       += x86/vf_interlace.o
>> > X86ASM-OBJS-$(CONFIG_LIMITER_FILTER)         += x86/vf_limiter.o
>> >+X86ASM-OBJS-$(CONFIG_LUT3D_FILTER)           += x86/vf_lut3d.o
>> > X86ASM-OBJS-$(CONFIG_MASKEDCLAMP_FILTER)     += x86/vf_maskedclamp.o
>> > X86ASM-OBJS-$(CONFIG_MASKEDMERGE_FILTER)     += x86/vf_maskedmerge.o
>> > X86ASM-OBJS-$(CONFIG_OVERLAY_FILTER)         += x86/vf_overlay.o
>> >diff --git a/libavfilter/x86/vf_lut3d.asm b/libavfilter/x86/vf_lut3d.asm
>> >new file mode 100644
>> >index 0000000000..b3d7c3962b
>> >--- /dev/null
>> >+++ b/libavfilter/x86/vf_lut3d.asm
>> >@@ -0,0 +1,757 @@
>>
>> >+;*****************************************************************************
>> >+;* x86-optimized functions for lut3d filter
>> >+;*
>> >+;* Copyright (c) 2021 Mark Reid <mindmark at gmail.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 "libavutil/x86/x86util.asm"
>> >+
>> >+SECTION_RODATA
>> >+pd_1f:  times 8 dd 1.0
>> >+pd_3f:  times 8 dd 3.0
>> >+
>> >+; used to limit rshifts as they are more expensive in avx1
>> >+pd_001: times 8 dd 001b
>> >+pd_010: times 8 dd 010b
>> >+pd_100: times 8 dd 100b
>> >+
>> >+pd_65535f:     times 8 dd 65535.0
>> >+pd_65535_invf: times 8 dd 0x37800080 ;1.0/65535.0
>> >+
>> >+pb_shuffle16:         db    0,    1, 0x80, 0x80, \
>> >+                            2,    3, 0x80, 0x80, \
>> >+                            4,    5, 0x80, 0x80, \
>> >+                            6,    7, 0x80, 0x80
>> >+
>> >+pb_lo_pack_shuffle16: db    0,    1,    4,    5, \
>> >+                            8,    9,   12,   13, \
>> >+                         0x80, 0x80, 0x80, 0x80, \
>> >+                         0x80, 0x80, 0x80, 0x80
>> >+
>> >+pb_hi_pack_shuffle16: db 0x80, 0x80, 0x80, 0x80, \
>> >+                         0x80, 0x80, 0x80, 0x80, \
>> >+                            0,    1,    4,    5, \
>> >+                            8,    9,   12,   13
>> >+
>> >+; tetrahedral table --------------------------------------------
>> >+; name:          x2|        x1|        x0|       cxxb|     cxxa
>> >+; values:      r 00|     r  00|     r  00|   c011 011| c001 001
>> >+;              g 01|     g  01|     g  01|   c101 101| c010 010
>> >+;              b 10|     b  10|     b  10|   c110 110| c100 100
>> >+
>> >+; g>b                                 b |          g |          r |
>>     c110 | c100
>> >+pd_tetra_table0: times 8 dd (10b << 10) | (01b << 8) | (00b << 6) |
>> (110b << 3) | 100b
>> >+; r>b                                 g |          b |          r |
>>     c101 | c100
>> >+pd_tetra_table1: times 8 dd (01b << 10) | (10b << 8) | (00b << 6) |
>> (101b << 3) | 100b
>> >+; else                                g |          r |          b |
>>     c101 | c001
>> >+pd_tetra_table2: times 8 dd (01b << 10) | (00b << 8) | (10b << 6) |
>> (101b << 3) | 001b
>> >+; b>g                                 r |          g |          b |
>>     c011 | c001
>> >+pd_tetra_table3: times 8 dd (00b << 10) | (01b << 8) | (10b << 6) |
>> (011b << 3) | 001b
>> >+; b>r                                 r |          b |          g |
>>     c011 | c010
>> >+pd_tetra_table4: times 8 dd (00b << 10) | (10b << 8) | (01b << 6) |
>> (011b << 3) | 010b
>> >+; else                                b |          r |          g |
>>     c110 | c010
>> >+pd_tetra_table5: times 8 dd (10b << 10) | (00b << 8) | (01b << 6) |
>> (110b << 3) | 010b
>> >+
>> >+SECTION .text
>> >+
>> >+struc Lut3DPreLut
>> >+    .size:    resd 1
>> >+    .min:     resd 3
>> >+    .max:     resd 3
>> >+    .scale:   resd 3
>> >+    .lut:     resq 3
>> >+endstruc
>> >+
>> >+struc LUT3DContext
>> >+    .class:        resq 1
>> >+    .lut:          resq 1
>> >+    .lutsize:      resd 1
>> >+    .lutsize2:     resd 1
>> >+    .scale:        resd 3
>> >+endstruc
>> >+
>> >+%define AV_NUM_DATA_POINTERS 8
>> >+
>> >+struc AVFrame
>> >+    .data:          resq AV_NUM_DATA_POINTERS
>> >+    .linesize:      resd AV_NUM_DATA_POINTERS
>> >+    .extended_data: resq 1
>> >+    .width:         resd 1
>> >+    .height:        resd 1
>> >+endstruc
>> >+
>> >+%define rm   rsp
>> >+%define gm   rsp+mmsize
>> >+%define bm   rsp+(mmsize*2)
>> >+
>> >+%define lut3dsizem  [rsp+mmsize*3]
>> >+%define lut3dsize2m [rsp+mmsize*4]
>> >+%define lut3dmaxm   [rsp+mmsize*5]
>> >+%define prelutmaxm  [rsp+mmsize*6]
>> >+
>> >+%define scalerm [rsp+mmsize*7]
>> >+%define scalegm [rsp+mmsize*8]
>> >+%define scalebm [rsp+mmsize*9]
>> >+
>> >+%define prelutminrm [rsp+mmsize*10]
>> >+%define prelutmingm [rsp+mmsize*11]
>> >+%define prelutminbm [rsp+mmsize*12]
>> >+
>> >+%define prelutscalerm [rsp+mmsize*13]
>> >+%define prelutscalegm [rsp+mmsize*14]
>> >+%define prelutscalebm [rsp+mmsize*15]
>> >+
>> >+; data pointers
>> >+%define srcrm [rsp+mmsize*16 +  0]
>> >+%define srcgm [rsp+mmsize*16 +  8]
>> >+%define srcbm [rsp+mmsize*16 + 16]
>> >+%define srcam [rsp+mmsize*16 + 24]
>> >+
>> >+%define dstrm [rsp+mmsize*16 + 32]
>> >+%define dstgm [rsp+mmsize*16 + 40]
>> >+%define dstbm [rsp+mmsize*16 + 48]
>> >+%define dstam [rsp+mmsize*16 + 56]
>> >+
>> >+%macro FETCH_PRELUT_PN 3
>> >+    mov tmp2d, [rm + %3]
>> >+    mov tmp3d, [gm + %3]
>> >+    movss xm%1, [tmpq + tmp2q*4]
>> >+    movss xm%2, [tmpq + tmp3q*4]
>> >+    movss [rm + %3], xm%1
>> >+    movss [gm + %3], xm%2
>> >+%endmacro
>> >+
>> >+; 1 - p
>> >+; 2 - n
>> >+; 3 - p indices
>> >+; 4 - n indices
>> >+%macro GATHER_PRELUT 4
>> >+    %if cpuflag(avx2)
>> >+        vpcmpeqb m7, m7
>> >+        vgatherdps m%1, [tmpq + m%3*4], m7 ; p
>> >+        vpcmpeqb m9, m9
>> >+        vgatherdps m%2, [tmpq + m%4*4], m9 ; n
>> >+    %else
>> >+        mova [rm], m%3
>> >+        mova [gm], m%4
>> >+        FETCH_PRELUT_PN %1, %2, 0
>> >+        FETCH_PRELUT_PN %1, %2, 4
>> >+        FETCH_PRELUT_PN %1, %2, 8
>> >+        FETCH_PRELUT_PN %1, %2, 12
>> >+    %if mmsize > 16
>> >+        FETCH_PRELUT_PN %1, %2, 16
>> >+        FETCH_PRELUT_PN %1, %2, 20
>> >+        FETCH_PRELUT_PN %1, %2, 24
>> >+        FETCH_PRELUT_PN %1, %2, 28
>> >+    %endif
>> >+        movu m%1, [rm]
>> >+        movu m%2, [gm]
>> >+    %endif
>> >+%endmacro
>> >+
>> >+%macro FLOORPS 2
>> >+    %if mmsize > 16
>> >+        vroundps %1, %2, 0x01
>> >+    %else
>> >+        cvttps2dq %1, %2
>> >+        cvtdq2ps  %1, %1
>> >+    %endif
>> >+%endmacro
>> >+
>> >+; 1 - dst
>> >+; 2 - index
>> >+; 3 - min
>> >+; 4 - scale
>> >+; assumes lut max m13, m14 1.0f, zero m15
>> >+%macro APPLY_PRELUT 4
>> >+    ; scale
>> >+    subps m5, m%1, %3 ; v - min
>> >+    mulps m5, m5, %4  ; v * scale
>> >+    ; clamp
>> >+    maxps m5, m5, m15 ; max zero
>> >+    minps m5, m5, m13 ; min lut max
>> >+
>> >+    FLOORPS m3, m5    ; prev index
>> >+    subps m5, m5, m3  ; d
>> >+    addps m4, m3, m14 ; p+1 = n index
>> >+    minps m4, m4, m13 ; clamp n idex
>> >+
>> >+    mov tmpq, [prelutq + Lut3DPreLut.lut + %2*8]
>> >+    cvttps2dq m6, m3
>> >+    cvttps2dq m10, m4
>> >+    GATHER_PRELUT 3, 4, 6, 10
>> >+
>> >+    ; lerp
>> >+    subps m8, m4, m3
>> >+    mulps m8, m8, m5
>> >+    addps m%1, m8, m3
>> >+%endmacro
>> >+
>> >+; 1 - dst
>> >+; 2 - scale
>> >+; assumes lut max m13, zero m15
>> >+%macro APPLY_SCALE 2
>> >+   mulps m%1, m%1, %2
>> >+   maxps m%1, m%1, m15
>> >+   minps m%1, m%1, m13
>> >+%endmacro
>> >+
>> >+%macro BLEND 4
>> >+%if mmsize > 16
>> >+    vblendvps %1, %2, %3, %4
>> >+%else
>> >+    %ifidni %1,%2
>> >+        %error operand 1 must not equal operand 2
>> >+    %endif
>> >+    %ifidni %1,%3
>> >+        %error operand 1 must not equal operand 3
>> >+    %endif
>> >+    mova  %1, %2
>> >+    xorps %1, %3
>> >+    andps %1, %4
>> >+    xorps %1, %2
>> >+%endif
>> >+%endmacro
>> >+
>> >+; sets nans to zere, +inf -inf handled later by min/max clamps
>> >+%macro SANITIZE_F 1
>> >+    cmpps m5, %1, %1, 0x0 ; nan == nan = False
>> >+    %if mmsize <= 16
>> >+        mova m6, %1
>> >+        BLEND %1, m15, m6, m5
>> >+    %else
>> >+        BLEND %1, m15, %1, m5
>> >+    %endif
>> >+%endmacro
>> >+
>> >+%macro ADD3 4
>> >+    addps %1, %2, %3
>> >+    addps %1, %1, %4
>> >+%endmacro
>> >+
>> >+%macro CMP_EQUAL 3
>> >+%if cpuflag(avx2)
>> >+    vpcmpeqd %1, %2, %3
>> >+%elif cpuflag(avx)
>> >+    cmpps %1, %2, %3, 0x0
>> >+%else
>> >+    pcmpeqd %1, %2, %3
>> >+%endif
>> >+%endmacro
>> >+
>> >+%macro SHIFT_RIGHT 2
>> >+%if mmsize <= 16
>> >+    psrld xm%1, %2
>> >+%elif cpuflag(avx2)
>> >+    vpsrld m%1, m%1, %2
>> >+%else
>> >+    vextractf128 xm15, m%1, 1
>> >+    psrld xm%1, %2
>> >+    psrld xm15, %2
>> >+    vinsertf128 m%1, m%1, xm15, 1
>> >+%endif
>> >+%endmacro
>> >+
>> >+%macro FETCH_LUT3D_RGB 4
>> >+    mov tmp2d, [rm + %4]
>> >+    movss xm%1, [tmpq + tmp2q*4 + 0]
>> >+    movss xm%2, [tmpq + tmp2q*4 + 4]
>> >+    movss xm%3, [tmpq + tmp2q*4 + 8]
>> >+    movss [rm + %4], xm%1
>> >+    movss [gm + %4], xm%2
>> >+    movss [bm + %4], xm%3
>> >+%endmacro
>> >+
>> >+; 1 - dstr
>> >+; 2 - dstg
>> >+; 3 - dstb
>> >+; 4 - indices
>> >+%macro GATHER_LUT3D_INDICES 4
>> >+%if cpuflag(avx2)
>> >+    vpcmpeqb m3, m3
>> >+    vgatherdps m%1, [tmpq + m%4*4 + 0], m3
>> >+    vpcmpeqb m14, m14
>> >+    vgatherdps m%2, [tmpq + m%4*4 + 4], m14
>> >+    vpcmpeqb m15, m15
>> >+    vgatherdps m%3, [tmpq + m%4*4 + 8], m15
>> >+%else
>> >+    movu [rm], m%4
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 0
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 4
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 8
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 12
>> >+%if mmsize > 16
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 16
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 20
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 24
>> >+    FETCH_LUT3D_RGB %1, %2, %3, 28
>> >+%endif
>> >+    movu m%1, [rm]
>> >+    movu m%2, [gm]
>> >+    movu m%3, [bm]
>> >+%endif
>> >+%endmacro
>> >+
>> >+%macro interp_tetrahedral 0
>> >+    %define d_r m0
>> >+    %define d_g m1
>> >+    %define d_b m2
>> >+
>> >+    %define prev_r m3
>> >+    %define prev_g m4
>> >+    %define prev_b m5
>> >+
>> >+    %define next_r m6
>> >+    %define next_g m7
>> >+    %define next_b m8
>> >+
>> >+    %define x0 m4
>> >+    %define x1 m5
>> >+    %define x2 m6
>> >+
>> >+    ; setup prev index
>> >+    FLOORPS prev_r, m0
>> >+    FLOORPS prev_g, m1
>> >+    FLOORPS prev_b, m2
>> >+
>> >+    ; setup deltas
>> >+    subps d_r, m0, prev_r
>> >+    subps d_g, m1, prev_g
>> >+    subps d_b, m2, prev_b
>> >+
>> >+    ; calculate select mask m9
>> >+    movu m6, [pd_tetra_table2]
>> >+    cmpps m7, d_r, d_b, 0x1E ; r > b CMP_GT_OQ
>> >+    BLEND m10, m6, [pd_tetra_table1], m7
>> >+    cmpps m7, d_g, d_b, 0x1E ; g > b CMP_GT_OQ
>> >+    BLEND m6, m10, [pd_tetra_table0], m7
>> >+
>> >+    movu m10, [pd_tetra_table5]
>> >+    cmpps m7, d_b, d_r, 0x1E ; b > r CMP_GT_OQ
>> >+    BLEND m9, m10, [pd_tetra_table4], m7
>> >+    cmpps m7, d_b, d_g, 0x1E ; b > g CMP_GT_OQ
>> >+    BLEND m10, m9, [pd_tetra_table3], m7
>> >+
>> >+    cmpps m7, d_r, d_g, 0x1E ; r > g CMP_GT_OQ
>> >+    BLEND m9, m10, m6, m7
>> >+
>> >+    ; setup next index
>> >+    addps next_r, prev_r, m14 ; +1
>> >+    minps next_r, next_r, m13 ; clamp lutmax
>> >+
>> >+    addps next_g, prev_g, m14 ; +1
>> >+    minps next_g, next_g, m13 ; clamp lutmax
>> >+
>> >+    addps next_b, prev_b, m14 ; +1
>> >+    minps next_b, next_b, m13 ; clamp lutmax
>> >+
>> >+    ; prescale indices
>> >+    mulps prev_r, prev_r, lut3dsize2m
>> >+    mulps next_r, next_r, lut3dsize2m
>> >+
>> >+    mulps prev_g, prev_g, lut3dsizem
>> >+    mulps next_g, next_g, lut3dsizem
>> >+
>> >+    mulps prev_b, prev_b, [pd_3f]
>> >+    mulps next_b, next_b, [pd_3f]
>> >+
>> >+    movu m14, [pd_001]
>> >+
>> >+    ; cxxa m10
>> >+    ; b
>> >+    andps m15, m9, m14
>> >+    CMP_EQUAL m15, m15, m14
>> >+    BLEND m10, prev_b, next_b, m15
>> >+
>> >+    ; g
>> >+    andps m15, m9, [pd_010]
>> >+    CMP_EQUAL m15, m15, [pd_010]
>> >+    BLEND m12, prev_g, next_g, m15
>> >+
>> >+    ; r
>> >+    andps m15, m9, [pd_100]
>> >+    CMP_EQUAL m15, m15, [pd_100]
>> >+    BLEND m13, prev_r, next_r, m15
>> >+
>> >+    ADD3 m10, m10, m12, m13
>> >+
>> >+    SHIFT_RIGHT 9, 3 ; 3
>> >+
>> >+    ; cxxb m11;
>> >+    ; b
>> >+    andps m15, m9, m14
>> >+    CMP_EQUAL m15, m15, m14
>> >+    BLEND m11, prev_b, next_b, m15
>> >+
>> >+    ; g
>> >+    andps m15, m9, [pd_010]
>> >+    CMP_EQUAL m15, m15, [pd_010]
>> >+    BLEND m12, prev_g, next_g, m15
>> >+
>> >+    ; r
>> >+    andps m15, m9, [pd_100]
>> >+    CMP_EQUAL m15, m15, [pd_100]
>> >+    BLEND m13, prev_r, next_r, m15
>> >+
>> >+    ADD3 m11, m11, m12, m13
>> >+
>> >+    ; c000 m12;
>> >+    ADD3 m12, prev_r, prev_g, prev_b
>> >+
>> >+    ; c111 m13;
>> >+    ADD3 m13, next_r, next_g, next_b
>> >+
>> >+    SHIFT_RIGHT 9, 3 ; 6
>> >+
>> >+    ; x0, m4
>> >+    andps m15, m9, m14
>> >+    CMP_EQUAL m15, m15, m14
>> >+    BLEND m7, d_r, d_g, m15 ; r,g
>> >+
>> >+    andps m15, m9, [pd_010]
>> >+    CMP_EQUAL m15, m15, [pd_010]
>> >+    BLEND x0, m7, d_b, m15 ; b
>> >+
>> >+    ; x1, m5
>> >+    andps m15, m9, [pd_100]
>> >+    CMP_EQUAL m15, m15, [pd_100]
>> >+    BLEND m7, d_r, d_g, m15 ; r,g
>> >+
>> >+    SHIFT_RIGHT 9, 3 ; 9
>> >+
>> >+    andps m15, m9, m14
>> >+    CMP_EQUAL m15, m15, m14
>> >+    BLEND x1, m7, d_b, m15 ; b
>> >+
>> >+    ; x2, m6
>> >+    andps m15, m9, [pd_010]
>> >+    CMP_EQUAL m15, m15, [pd_010]
>> >+    BLEND m7, d_r, d_g, m15 ; r,g
>> >+
>> >+    andps m15, m9, [pd_100]
>> >+    CMP_EQUAL m15, m15, [pd_100]
>> >+    BLEND x2, m7, d_b, m15 ; b
>> >+
>> >+    ; convert indices to integer
>> >+    cvttps2dq m12, m12
>> >+    cvttps2dq m10, m10
>> >+    cvttps2dq m11, m11
>> >+    cvttps2dq m13, m13
>> >+
>> >+    ; now the gathering festival
>> >+    mov tmpq, [ctxq + LUT3DContext.lut]
>> >+
>> >+    GATHER_LUT3D_INDICES 0, 1, 2, 12
>> >+    movu m14, [pd_1f]
>> >+    subps m14, m14, x0; 1 - x0
>> >+
>> >+    mulps m0, m0, m14
>> >+    mulps m1, m1, m14
>> >+    mulps m2, m2, m14
>> >+
>> >+    GATHER_LUT3D_INDICES 7, 8, 9, 10
>> >+    subps m14, x0, x1; x0 - x1
>> >+    mulps m7, m7, m14
>> >+    addps m0, m0, m7
>> >+
>> >+    mulps m8, m8, m14
>> >+    addps m1, m1, m8
>> >+
>> >+    mulps m9, m9, m14
>> >+    addps m2, m2, m9
>> >+
>> >+    GATHER_LUT3D_INDICES 7, 8, 9, 11
>> >+    subps m14, x1, x2; x1 - x2
>> >+
>> >+    mulps m7, m7, m14
>> >+    addps m0, m0, m7
>> >+
>> >+    mulps m8, m8, m14
>> >+    addps m1, m1, m8
>> >+
>> >+    mulps m9, m9, m14
>> >+    addps m2, m2, m9
>> >+
>> >+    GATHER_LUT3D_INDICES 7, 8, 9, 13
>> >+    mulps m7, m7, x2
>> >+    addps m0, m0, m7
>> >+
>> >+    mulps m8, m8, x2
>> >+    addps m1, m1, m8
>> >+
>> >+    mulps m9, m9, x2
>> >+    addps m2, m2, m9
>> >+%endmacro
>> >+
>> >+%macro INIT_DATA_PTR 3
>> >+    mov ptrq, [%2 + AVFrame.data     + %3 * 8]
>> >+    mov tmpd, [%2 + AVFrame.linesize + %3 * 4]
>> >+    imul tmpd, slice_startd
>> >+    add ptrq, tmpq
>> >+    mov %1, ptrq
>> >+%endmacro
>> >+
>> >+%macro INC_DATA_PTR 3
>> >+    mov tmpd, [%2 + AVFrame.linesize + %3 * 4]
>> >+    mov ptrq, %1
>> >+    add ptrq, tmpq
>> >+    mov %1, ptrq
>> >+%endmacro
>> >+
>> >+%macro LOAD16 2
>> >+    mov ptrq, %2
>> >+    %if mmsize > 16
>> >+        movu xm%1, [ptrq + xq*2]
>> >+    %else
>> >+        movsd xm%1, [ptrq + xq*2]
>> >+    %endif
>> >+    %if cpuflag(avx2)
>> >+        vpmovzxwd m%1, xm%1
>> >+    %else
>> >+        %if mmsize > 16
>> >+            pshufd xm4, xm%1, (1 << 6 | 0 << 4 | 3 << 2 | 2 << 0)
>> >+            pshufb xm%1, xm6 ; pb_shuffle16
>> >+            pshufb xm4,  xm6 ; pb_shuffle16
>> >+            vinsertf128 m%1, m%1, xm4, 1
>> >+        %else
>> >+            pshufd  xm%1, xm%1, (3 << 6 | 1 << 4 | 3 << 2 | 0 << 0)
>> >+            pshuflw xm%1, xm%1, (2 << 6 | 1 << 4 | 2 << 2 | 0 << 0)
>> >+            pshufhw xm%1, xm%1, (2 << 6 | 1 << 4 | 2 << 2 | 0 << 0)
>> >+        %endif
>> >+    %endif
>> >+    cvtdq2ps m%1, m%1
>> >+    mulps m%1, m%1, m7 ; pd_65535_invf
>> >+%endmacro
>> >+
>> >+%macro STORE16 2
>> >+    mulps m%2, m%2, m5  ; [pd_65535f]
>> >+    minps m%2, m%2, m5  ; [pd_65535f]
>> >+    maxps m%2, m%2, m15 ; zero
>> >+    cvttps2dq m%2, m%2
>> >+    %if mmsize > 16
>> >+        vextractf128 xm4, m%2, 1
>> >+        pshufb xm%2, xm6 ; [pb_lo_pack_shuffle16]
>> >+        pshufb xm4,  xm7 ; [pb_hi_pack_shuffle16]
>> >+        por xm%2, xm4
>> >+    %else
>> >+        pshuflw xm%2, xm%2, (1 << 6 | 1 << 4 | 2 << 2 | 0 << 0)
>> >+        pshufhw xm%2, xm%2, (1 << 6 | 1 << 4 | 2 << 2 | 0 << 0)
>> >+        pshufd  xm%2, xm%2, (3 << 6 | 3 << 4 | 2 << 2 | 0 << 0)
>> >+    %endif
>> >+    mov ptrq, %1
>> >+    %if mmsize > 16
>> >+        movu [ptrq + xq*2], xm%2
>> >+    %else
>> >+        movsd [ptrq + xq*2], xm%2
>> >+    %endif
>> >+%endmacro
>> >+
>> >+; 1 - interp method
>> >+; 2 - format_name
>> >+; 3 - depth
>> >+; 4 - is float format
>> >+%macro DEFINE_INTERP_FUNC 4
>> >+cglobal interp_%1_%2, 7, 13, 16, mmsize*16+(8*8), ctx, prelut,
>> src_image, dst_image, slice_start, slice_end, has_alpha, width, x, ptr,
>> tmp, tmp2, tmp3
>> >+    ; store lut max and lutsize
>> >+    mov tmpd, dword [ctxq + LUT3DContext.lutsize]
>> >+    cvtsi2ss xm0, tmpd
>> >+    mulss xm0, xm0, [pd_3f]
>> >+    VBROADCASTSS m0, xm0
>> >+    mova lut3dsizem, m0
>> >+    sub tmpd, 1
>> >+    cvtsi2ss xm0, tmpd
>> >+    VBROADCASTSS m0, xm0
>> >+    mova lut3dmaxm, m0
>> >+
>> >+    ; scale_r
>> >+    mulss xm1, xm0, dword [ctxq + LUT3DContext.scale + 0*4]
>> >+    VBROADCASTSS m1, xm1
>> >+    mova scalerm, m1
>> >+
>> >+    ; scale_g
>> >+    mulss xm1, xm0, dword [ctxq + LUT3DContext.scale + 1*4]
>> >+    VBROADCASTSS m1, xm1
>> >+    mova scalegm, m1
>> >+
>> >+    ; scale_b
>> >+    mulss xm1, xm0, dword [ctxq + LUT3DContext.scale + 2*4]
>> >+    VBROADCASTSS m1, xm1
>> >+    mova scalebm, m1
>> >+
>> >+    ; store lutsize2
>> >+    cvtsi2ss xm0, dword [ctxq + LUT3DContext.lutsize2]
>> >+    mulss xm0, xm0, [pd_3f]
>> >+    VBROADCASTSS m0, xm0
>> >+    mova lut3dsize2m, m0
>> >+
>> >+    ; init prelut values
>> >+    cmp prelutq, 0
>> >+    je %%skip_init_prelut
>> >+        mov tmpd, dword [prelutq + Lut3DPreLut.size]
>> >+        sub tmpd, 1
>> >+        cvtsi2ss xm0, tmpd
>> >+        VBROADCASTSS m0, xm0
>> >+        mova prelutmaxm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.min + 0*4]
>> >+        mova prelutminrm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.min + 1*4]
>> >+        mova prelutmingm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.min + 2*4]
>> >+        mova prelutminbm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.scale + 0*4]
>> >+        mova prelutscalerm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.scale + 1*4]
>> >+        mova prelutscalegm, m0
>> >+        VBROADCASTSS m0, dword [prelutq + Lut3DPreLut.scale + 2*4]
>> >+        mova prelutscalebm, m0
>> >+    %%skip_init_prelut:
>> >+
>> >+    mov widthd,  [src_imageq + AVFrame.width]
>> >+
>> >+    ; gbra pixel order
>> >+    INIT_DATA_PTR srcrm, src_imageq, 2
>> >+    INIT_DATA_PTR srcgm, src_imageq, 0
>> >+    INIT_DATA_PTR srcbm, src_imageq, 1
>> >+    INIT_DATA_PTR srcam, src_imageq, 3
>> >+
>> >+    INIT_DATA_PTR dstrm, dst_imageq, 2
>> >+    INIT_DATA_PTR dstgm, dst_imageq, 0
>> >+    INIT_DATA_PTR dstbm, dst_imageq, 1
>> >+    INIT_DATA_PTR dstam, dst_imageq, 3
>> >+
>> >+    %%loop_y:
>> >+        xor xq, xq
>> >+        %%loop_x:
>> >+            movu m14, [pd_1f]
>> >+            xorps m15, m15, m15
>> >+            %if %4 ; float
>> >+                mov ptrq, srcrm
>> >+                movu m0, [ptrq + xq*4]
>> >+                mov ptrq, srcgm
>> >+                movu m1, [ptrq + xq*4]
>> >+                mov ptrq, srcbm
>> >+                movu m2, [ptrq + xq*4]
>> >+                SANITIZE_F m0
>> >+                SANITIZE_F m1
>> >+                SANITIZE_F m2
>> >+            %else
>> >+                ; constants for LOAD16
>> >+                movu m7, [pd_65535_invf]
>> >+                %if notcpuflag(avx2) && mmsize >= 32
>> >+                    movu xm6, [pb_shuffle16]
>> >+                %endif
>> >+                LOAD16 0, srcrm
>> >+                LOAD16 1, srcgm
>> >+                LOAD16 2, srcbm
>> >+            %endif
>> >+
>> >+            cmp prelutq, 0
>> >+            je %%skip_prelut
>> >+                mova m13, prelutmaxm
>> >+                APPLY_PRELUT 0, 0, prelutminrm, prelutscalerm
>> >+                APPLY_PRELUT 1, 1, prelutmingm, prelutscalegm
>> >+                APPLY_PRELUT 2, 2, prelutminbm, prelutscalebm
>> >+            %%skip_prelut:
>> >+
>> >+            mova m13, lut3dmaxm
>> >+            APPLY_SCALE 0, scalerm
>> >+            APPLY_SCALE 1, scalegm
>> >+            APPLY_SCALE 2, scalebm
>> >+
>> >+            interp_%1
>> >+
>> >+            %if %4 ; float
>> >+                mov ptrq, dstrm
>> >+                movu [ptrq + xq*4], m0
>> >+                mov ptrq, dstgm
>> >+                movu [ptrq + xq*4], m1
>> >+                mov ptrq, dstbm
>> >+                movu [ptrq + xq*4], m2
>> >+                cmp has_alphad, 0
>> >+                je %%skip_alphaf
>> >+                    mov ptrq, srcam
>> >+                    movu m0, [ptrq + xq*4]
>> >+                    mov ptrq, dstam
>> >+                    movu [ptrq + xq*4], m0
>> >+                %%skip_alphaf:
>> >+            %else
>> >+                ; constants for STORE16
>> >+                movu m5,  [pd_65535f]
>> >+                %if mmsize > 16
>> >+                    movu xm6, [pb_lo_pack_shuffle16]
>> >+                    movu xm7, [pb_hi_pack_shuffle16]
>> >+                %endif
>> >+
>> >+                xorps m15, m15, m15
>> >+                STORE16 dstrm, 0
>> >+                STORE16 dstgm, 1
>> >+                STORE16 dstbm, 2
>> >+
>> >+                cmp has_alphad, 0
>> >+                je %%skip_alpha
>> >+                    %if mmsize > 16
>> >+                        mov ptrq, srcam
>> >+                        movu xm0, [ptrq + xq*2]
>> >+                        mov ptrq, dstam
>> >+                        movu [ptrq + xq*2], xm0
>> >+                    %else
>> >+                        mov ptrq, srcam
>> >+                        movsd xm0, [ptrq + xq*2]
>> >+                        mov ptrq, dstam
>> >+                        movsd [ptrq + xq*2], xm0
>> >+                    %endif
>> >+
>> >+                %%skip_alpha:
>> >+            %endif
>> >+
>> >+            add xq, mmsize/4
>> >+            cmp xd, widthd
>> >+            jl %%loop_x
>> >+
>> >+        INC_DATA_PTR srcrm, src_imageq, 2
>> >+        INC_DATA_PTR srcgm, src_imageq, 0
>> >+        INC_DATA_PTR srcbm, src_imageq, 1
>> >+        INC_DATA_PTR srcam, src_imageq, 3
>> >+
>> >+        INC_DATA_PTR dstrm, dst_imageq, 2
>> >+        INC_DATA_PTR dstgm, dst_imageq, 0
>> >+        INC_DATA_PTR dstbm, dst_imageq, 1
>> >+        INC_DATA_PTR dstam, dst_imageq, 3
>> >+
>> >+        inc slice_startd
>> >+        cmp slice_startd, slice_endd
>> >+        jl %%loop_y
>> >+
>> >+    RET
>> >+%endmacro
>> >+%if ARCH_X86_64
>> >+    %if HAVE_AVX2_EXTERNAL
>> >+        INIT_YMM avx2
>> >+        DEFINE_INTERP_FUNC tetrahedral, pf32, 32, 1
>> >+        DEFINE_INTERP_FUNC tetrahedral, p16, 16, 0
>> >+    %endif
>> >+    %if HAVE_AVX_EXTERNAL
>> >+        INIT_YMM avx
>> >+        DEFINE_INTERP_FUNC tetrahedral, pf32, 32, 1
>> >+        DEFINE_INTERP_FUNC tetrahedral, p16, 16, 0
>> >+    %endif
>> >+    INIT_XMM sse2
>> >+    DEFINE_INTERP_FUNC tetrahedral, pf32, 32, 1
>> >+    DEFINE_INTERP_FUNC tetrahedral, p16, 16, 0
>> >+%endif
>> >\ No newline at end of file
>> >diff --git a/libavfilter/x86/vf_lut3d_init.c
>> b/libavfilter/x86/vf_lut3d_init.c
>> >new file mode 100644
>> >index 0000000000..9b9b36e4af
>> >--- /dev/null
>> >+++ b/libavfilter/x86/vf_lut3d_init.c
>> >@@ -0,0 +1,88 @@
>> >+/*
>> >+ * Copyright (c) 2021 Mark Reid <mindmark at gmail.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 "libavutil/attributes.h"
>> >+#include "libavutil/cpu.h"
>> >+#include "libavutil/x86/cpu.h"
>> >+#include "libavfilter/lut3d.h"
>> >+
>> >+#define DEFINE_INTERP_FUNC(name, format, opt)
>>
>>  \
>> >+void ff_interp_##name##_##format##_##opt(LUT3DContext *lut3d,
>> Lut3DPreLut *prelut, AVFrame *src, AVFrame *dst, int slice_start, int
>> slice_end, int has_alpha); \
>> >+static int interp_##name##_##format##_##opt(AVFilterContext *ctx, void
>> *arg, int jobnr, int nb_jobs)
>>   \
>> >+{
>>
>>  \
>> >+    LUT3DContext *lut3d = ctx->priv;
>>
>> \
>> >+    Lut3DPreLut *prelut = lut3d->prelut.size > 0? &lut3d->prelut:
>> NULL;
>>        \
>> >+    ThreadData *td = arg;
>>
>>  \
>> >+    AVFrame *in  = td->in;
>>
>> \
>> >+    AVFrame *out = td->out;
>>
>>  \
>> >+    int has_alpha = in->linesize[3] && out != in;
>>
>>  \
>> >+    int slice_start = (in->height *  jobnr   ) / nb_jobs;
>>
>>  \
>> >+    int slice_end   = (in->height * (jobnr+1)) / nb_jobs;
>>
>>  \
>> >+    ff_interp_##name##_##format##_##opt(lut3d, prelut, in, out,
>> slice_start, slice_end, has_alpha);
>>          \
>> >+    return 0;
>>
>>  \
>> >+}
>> >+
>> >+#if ARCH_X86_64
>> >+#if HAVE_AVX2_EXTERNAL
>> >+    DEFINE_INTERP_FUNC(tetrahedral, pf32, avx2)
>> >+    DEFINE_INTERP_FUNC(tetrahedral, p16,  avx2)
>> >+#endif
>> >+#if HAVE_AVX_EXTERNAL
>> >+    DEFINE_INTERP_FUNC(tetrahedral, pf32, avx)
>> >+    DEFINE_INTERP_FUNC(tetrahedral, p16,  avx)
>> >+#endif
>> >+    DEFINE_INTERP_FUNC(tetrahedral, pf32, sse2)
>> >+    DEFINE_INTERP_FUNC(tetrahedral, p16,  sse2)
>> >+#endif
>> >+
>> >+
>> >+av_cold void ff_lut3d_init_x86(LUT3DContext *s, const
>> AVPixFmtDescriptor *desc)
>> >+{
>> >+    int cpu_flags = av_get_cpu_flags();
>> >+    int planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
>> >+    int isfloat = desc->flags & AV_PIX_FMT_FLAG_FLOAT;
>> >+    int depth = desc->comp[0].depth;
>> >+
>> >+#if ARCH_X86_64
>> >+    if (EXTERNAL_AVX2_FAST(cpu_flags) && s->interpolation ==
>> INTERPOLATE_TETRAHEDRAL && planar) {
>> >+#if HAVE_AVX2_EXTERNAL
>> >+        if (isfloat && planar) {
>> >+            s->interp = interp_tetrahedral_pf32_avx2;
>> >+        } else if (depth == 16) {
>> >+            s->interp = interp_tetrahedral_p16_avx2;
>> >+        }
>> >+#endif
>> >+    } else if (EXTERNAL_AVX_FAST(cpu_flags) && s->interpolation ==
>> INTERPOLATE_TETRAHEDRAL && planar) {
>> >+#if HAVE_AVX_EXTERNAL
>> >+        if (isfloat) {
>> >+            s->interp = interp_tetrahedral_pf32_avx;
>> >+        } else if (depth == 16) {
>> >+            s->interp = interp_tetrahedral_p16_avx;
>> >+        }
>> >+#endif
>> >+    } else if (EXTERNAL_SSE2(cpu_flags) && s->interpolation ==
>> INTERPOLATE_TETRAHEDRAL && planar) {
>> >+        if (isfloat) {
>> >+            s->interp = interp_tetrahedral_pf32_sse2;
>> >+        } else if (depth == 16) {
>> >+            s->interp = interp_tetrahedral_p16_sse2;
>> >+        }
>> >+    }
>> >+#endif
>> >+}
>> >--
>> >2.31.1.windows.1
>> >
>> >_______________________________________________
>> >ffmpeg-devel mailing list
>> >ffmpeg-devel at ffmpeg.org
>> >https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>> >
>> >To unsubscribe, visit link above, or email
>> >ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
>> _______________________________________________
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>>
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>>
>


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