800 lines
29 KiB
C
800 lines
29 KiB
C
/*
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* Copyright (c) 2013 Clément Bœsch
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* 3D Lookup table filter
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*/
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#include "libavutil/opt.h"
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#include "libavutil/file.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/avassert.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/avstring.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "dualinput.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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#define R 0
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#define G 1
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#define B 2
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#define A 3
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enum interp_mode {
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INTERPOLATE_NEAREST,
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INTERPOLATE_TRILINEAR,
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INTERPOLATE_TETRAHEDRAL,
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NB_INTERP_MODE
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};
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struct rgbvec {
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float r, g, b;
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};
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/* 3D LUT don't often go up to level 32, but it is common to have a Hald CLUT
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* of 512x512 (64x64x64) */
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#define MAX_LEVEL 64
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typedef struct LUT3DContext {
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const AVClass *class;
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enum interp_mode interpolation;
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char *file;
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uint8_t rgba_map[4];
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int step;
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int is16bit;
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struct rgbvec (*interp_8) (const struct LUT3DContext*, uint8_t, uint8_t, uint8_t);
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struct rgbvec (*interp_16)(const struct LUT3DContext*, uint16_t, uint16_t, uint16_t);
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struct rgbvec lut[MAX_LEVEL][MAX_LEVEL][MAX_LEVEL];
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int lutsize;
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#if CONFIG_HALDCLUT_FILTER
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uint8_t clut_rgba_map[4];
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int clut_step;
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int clut_is16bit;
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int clut_width;
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FFDualInputContext dinput;
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#endif
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} LUT3DContext;
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#define OFFSET(x) offsetof(LUT3DContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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#define COMMON_OPTIONS \
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{ "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, FLAGS, "interp_mode" }, \
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{ "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
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{ "trilinear", "interpolate values using the 8 points defining a cube", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TRILINEAR}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
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{ "tetrahedral", "interpolate values using a tetrahedron", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TETRAHEDRAL}, INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
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{ NULL }
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static inline float lerpf(float v0, float v1, float f)
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{
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return v0 + (v1 - v0) * f;
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}
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static inline struct rgbvec lerp(const struct rgbvec *v0, const struct rgbvec *v1, float f)
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{
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struct rgbvec v = {
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lerpf(v0->r, v1->r, f), lerpf(v0->g, v1->g, f), lerpf(v0->b, v1->b, f)
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};
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return v;
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}
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#define NEAR(x) ((int)((x) + .5))
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#define PREV(x) ((int)(x))
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#define NEXT(x) (FFMIN((int)(x) + 1, lut3d->lutsize - 1))
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/**
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* Get the nearest defined point
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*/
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static inline struct rgbvec interp_nearest(const LUT3DContext *lut3d,
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const struct rgbvec *s)
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{
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return lut3d->lut[NEAR(s->r)][NEAR(s->g)][NEAR(s->b)];
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}
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/**
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* Interpolate using the 8 vertices of a cube
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* @see https://en.wikipedia.org/wiki/Trilinear_interpolation
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*/
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static inline struct rgbvec interp_trilinear(const LUT3DContext *lut3d,
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const struct rgbvec *s)
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{
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const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
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const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
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const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
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const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]];
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const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
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const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
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const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
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const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
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const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
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const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
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const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]];
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const struct rgbvec c00 = lerp(&c000, &c100, d.r);
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const struct rgbvec c10 = lerp(&c010, &c110, d.r);
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const struct rgbvec c01 = lerp(&c001, &c101, d.r);
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const struct rgbvec c11 = lerp(&c011, &c111, d.r);
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const struct rgbvec c0 = lerp(&c00, &c10, d.g);
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const struct rgbvec c1 = lerp(&c01, &c11, d.g);
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const struct rgbvec c = lerp(&c0, &c1, d.b);
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return c;
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}
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/**
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* Tetrahedral interpolation. Based on code found in Truelight Software Library paper.
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* @see http://www.filmlight.ltd.uk/pdf/whitepapers/FL-TL-TN-0057-SoftwareLib.pdf
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*/
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static inline struct rgbvec interp_tetrahedral(const LUT3DContext *lut3d,
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const struct rgbvec *s)
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{
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const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
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const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
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const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
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const struct rgbvec c000 = lut3d->lut[prev[0]][prev[1]][prev[2]];
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const struct rgbvec c111 = lut3d->lut[next[0]][next[1]][next[2]];
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struct rgbvec c;
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if (d.r > d.g) {
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if (d.g > d.b) {
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const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
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const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
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c.r = (1-d.r) * c000.r + (d.r-d.g) * c100.r + (d.g-d.b) * c110.r + (d.b) * c111.r;
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c.g = (1-d.r) * c000.g + (d.r-d.g) * c100.g + (d.g-d.b) * c110.g + (d.b) * c111.g;
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c.b = (1-d.r) * c000.b + (d.r-d.g) * c100.b + (d.g-d.b) * c110.b + (d.b) * c111.b;
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} else if (d.r > d.b) {
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const struct rgbvec c100 = lut3d->lut[next[0]][prev[1]][prev[2]];
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const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
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c.r = (1-d.r) * c000.r + (d.r-d.b) * c100.r + (d.b-d.g) * c101.r + (d.g) * c111.r;
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c.g = (1-d.r) * c000.g + (d.r-d.b) * c100.g + (d.b-d.g) * c101.g + (d.g) * c111.g;
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c.b = (1-d.r) * c000.b + (d.r-d.b) * c100.b + (d.b-d.g) * c101.b + (d.g) * c111.b;
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} else {
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const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
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const struct rgbvec c101 = lut3d->lut[next[0]][prev[1]][next[2]];
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c.r = (1-d.b) * c000.r + (d.b-d.r) * c001.r + (d.r-d.g) * c101.r + (d.g) * c111.r;
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c.g = (1-d.b) * c000.g + (d.b-d.r) * c001.g + (d.r-d.g) * c101.g + (d.g) * c111.g;
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c.b = (1-d.b) * c000.b + (d.b-d.r) * c001.b + (d.r-d.g) * c101.b + (d.g) * c111.b;
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}
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} else {
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if (d.b > d.g) {
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const struct rgbvec c001 = lut3d->lut[prev[0]][prev[1]][next[2]];
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const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
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c.r = (1-d.b) * c000.r + (d.b-d.g) * c001.r + (d.g-d.r) * c011.r + (d.r) * c111.r;
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c.g = (1-d.b) * c000.g + (d.b-d.g) * c001.g + (d.g-d.r) * c011.g + (d.r) * c111.g;
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c.b = (1-d.b) * c000.b + (d.b-d.g) * c001.b + (d.g-d.r) * c011.b + (d.r) * c111.b;
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} else if (d.b > d.r) {
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const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
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const struct rgbvec c011 = lut3d->lut[prev[0]][next[1]][next[2]];
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c.r = (1-d.g) * c000.r + (d.g-d.b) * c010.r + (d.b-d.r) * c011.r + (d.r) * c111.r;
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c.g = (1-d.g) * c000.g + (d.g-d.b) * c010.g + (d.b-d.r) * c011.g + (d.r) * c111.g;
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c.b = (1-d.g) * c000.b + (d.g-d.b) * c010.b + (d.b-d.r) * c011.b + (d.r) * c111.b;
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} else {
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const struct rgbvec c010 = lut3d->lut[prev[0]][next[1]][prev[2]];
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const struct rgbvec c110 = lut3d->lut[next[0]][next[1]][prev[2]];
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c.r = (1-d.g) * c000.r + (d.g-d.r) * c010.r + (d.r-d.b) * c110.r + (d.b) * c111.r;
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c.g = (1-d.g) * c000.g + (d.g-d.r) * c010.g + (d.r-d.b) * c110.g + (d.b) * c111.g;
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c.b = (1-d.g) * c000.b + (d.g-d.r) * c010.b + (d.r-d.b) * c110.b + (d.b) * c111.b;
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}
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}
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return c;
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}
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#define DEFINE_INTERP_FUNC(name, nbits) \
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static struct rgbvec interp_##nbits##_##name(const LUT3DContext *lut3d, \
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uint##nbits##_t r, \
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uint##nbits##_t g, \
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uint##nbits##_t b) \
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{ \
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const float scale = (1. / ((1<<nbits) - 1)) * (lut3d->lutsize - 1); \
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const struct rgbvec scaled_rgb = {r * scale, g * scale, b * scale}; \
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return interp_##name(lut3d, &scaled_rgb); \
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}
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DEFINE_INTERP_FUNC(nearest, 8)
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DEFINE_INTERP_FUNC(trilinear, 8)
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DEFINE_INTERP_FUNC(tetrahedral, 8)
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DEFINE_INTERP_FUNC(nearest, 16)
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DEFINE_INTERP_FUNC(trilinear, 16)
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DEFINE_INTERP_FUNC(tetrahedral, 16)
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#define MAX_LINE_SIZE 512
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static int skip_line(const char *p)
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{
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while (*p && av_isspace(*p))
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p++;
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return !*p || *p == '#';
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}
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#define NEXT_LINE(loop_cond) do { \
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if (!fgets(line, sizeof(line), f)) { \
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av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n"); \
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return AVERROR_INVALIDDATA; \
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} \
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} while (loop_cond)
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/* Basically r g and b float values on each line; seems to be generated by
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* Davinci */
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static int parse_dat(AVFilterContext *ctx, FILE *f)
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{
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LUT3DContext *lut3d = ctx->priv;
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const int size = lut3d->lutsize;
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int i, j, k;
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for (k = 0; k < size; k++) {
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for (j = 0; j < size; j++) {
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for (i = 0; i < size; i++) {
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char line[MAX_LINE_SIZE];
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struct rgbvec *vec = &lut3d->lut[k][j][i];
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NEXT_LINE(skip_line(line));
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sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b);
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}
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}
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}
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return 0;
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}
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/* Iridas format */
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static int parse_cube(AVFilterContext *ctx, FILE *f)
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{
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LUT3DContext *lut3d = ctx->priv;
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char line[MAX_LINE_SIZE];
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float min[3] = {0.0, 0.0, 0.0};
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float max[3] = {1.0, 1.0, 1.0};
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while (fgets(line, sizeof(line), f)) {
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if (!strncmp(line, "LUT_3D_SIZE ", 12)) {
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int i, j, k;
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const int size = strtol(line + 12, NULL, 0);
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if (size < 2 || size > MAX_LEVEL) {
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av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n");
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return AVERROR(EINVAL);
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}
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lut3d->lutsize = size;
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for (k = 0; k < size; k++) {
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for (j = 0; j < size; j++) {
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for (i = 0; i < size; i++) {
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struct rgbvec *vec = &lut3d->lut[k][j][i];
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do {
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NEXT_LINE(0);
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if (!strncmp(line, "DOMAIN_", 7)) {
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float *vals = NULL;
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if (!strncmp(line + 7, "MIN ", 4)) vals = min;
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else if (!strncmp(line + 7, "MAX ", 4)) vals = max;
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if (!vals)
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return AVERROR_INVALIDDATA;
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sscanf(line + 11, "%f %f %f", vals, vals + 1, vals + 2);
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av_log(ctx, AV_LOG_DEBUG, "min: %f %f %f | max: %f %f %f\n",
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min[0], min[1], min[2], max[0], max[1], max[2]);
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continue;
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}
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} while (skip_line(line));
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if (sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3)
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return AVERROR_INVALIDDATA;
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vec->r *= max[0] - min[0];
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vec->g *= max[1] - min[1];
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vec->b *= max[2] - min[2];
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}
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}
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}
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break;
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}
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}
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return 0;
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}
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/* Assume 17x17x17 LUT with a 16-bit depth
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* FIXME: it seems there are various 3dl formats */
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static int parse_3dl(AVFilterContext *ctx, FILE *f)
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{
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char line[MAX_LINE_SIZE];
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LUT3DContext *lut3d = ctx->priv;
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int i, j, k;
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const int size = 17;
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const float scale = 16*16*16;
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lut3d->lutsize = size;
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if (!fgets(line, sizeof(line), f))
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return AVERROR_INVALIDDATA;
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for (k = 0; k < size; k++) {
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for (j = 0; j < size; j++) {
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for (i = 0; i < size; i++) {
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int r, g, b;
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struct rgbvec *vec = &lut3d->lut[k][j][i];
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NEXT_LINE(skip_line(line));
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if (sscanf(line, "%d %d %d", &r, &g, &b) != 3)
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return AVERROR_INVALIDDATA;
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vec->r = r / scale;
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vec->g = g / scale;
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vec->b = b / scale;
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}
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}
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}
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return 0;
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}
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/* Pandora format */
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static int parse_m3d(AVFilterContext *ctx, FILE *f)
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{
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LUT3DContext *lut3d = ctx->priv;
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float scale;
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int i, j, k, size, in = -1, out = -1;
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char line[MAX_LINE_SIZE];
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uint8_t rgb_map[3] = {0, 1, 2};
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while (fgets(line, sizeof(line), f)) {
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if (!strncmp(line, "in", 2)) in = strtol(line + 2, NULL, 0);
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else if (!strncmp(line, "out", 3)) out = strtol(line + 3, NULL, 0);
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else if (!strncmp(line, "values", 6)) {
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const char *p = line + 6;
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#define SET_COLOR(id) do { \
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while (av_isspace(*p)) \
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p++; \
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switch (*p) { \
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case 'r': rgb_map[id] = 0; break; \
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case 'g': rgb_map[id] = 1; break; \
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case 'b': rgb_map[id] = 2; break; \
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} \
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while (*p && !av_isspace(*p)) \
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p++; \
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} while (0)
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SET_COLOR(0);
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SET_COLOR(1);
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SET_COLOR(2);
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break;
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}
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}
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if (in == -1 || out == -1) {
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av_log(ctx, AV_LOG_ERROR, "in and out must be defined\n");
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return AVERROR_INVALIDDATA;
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}
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if (in < 2 || out < 2 ||
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in > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL ||
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out > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL) {
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av_log(ctx, AV_LOG_ERROR, "invalid in (%d) or out (%d)\n", in, out);
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return AVERROR_INVALIDDATA;
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}
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for (size = 1; size*size*size < in; size++);
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lut3d->lutsize = size;
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scale = 1. / (out - 1);
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for (k = 0; k < size; k++) {
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for (j = 0; j < size; j++) {
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for (i = 0; i < size; i++) {
|
|
struct rgbvec *vec = &lut3d->lut[k][j][i];
|
|
float val[3];
|
|
|
|
NEXT_LINE(0);
|
|
if (sscanf(line, "%f %f %f", val, val + 1, val + 2) != 3)
|
|
return AVERROR_INVALIDDATA;
|
|
vec->r = val[rgb_map[0]] * scale;
|
|
vec->g = val[rgb_map[1]] * scale;
|
|
vec->b = val[rgb_map[2]] * scale;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void set_identity_matrix(LUT3DContext *lut3d, int size)
|
|
{
|
|
int i, j, k;
|
|
const float c = 1. / (size - 1);
|
|
|
|
lut3d->lutsize = size;
|
|
for (k = 0; k < size; k++) {
|
|
for (j = 0; j < size; j++) {
|
|
for (i = 0; i < size; i++) {
|
|
struct rgbvec *vec = &lut3d->lut[k][j][i];
|
|
vec->r = k * c;
|
|
vec->g = j * c;
|
|
vec->b = i * c;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int query_formats(AVFilterContext *ctx)
|
|
{
|
|
static const enum AVPixelFormat pix_fmts[] = {
|
|
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
|
|
AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
|
|
AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
|
|
AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
|
|
AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
|
|
AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
|
|
AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
return 0;
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
LUT3DContext *lut3d = inlink->dst->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
switch (inlink->format) {
|
|
case AV_PIX_FMT_RGB48:
|
|
case AV_PIX_FMT_BGR48:
|
|
case AV_PIX_FMT_RGBA64:
|
|
case AV_PIX_FMT_BGRA64:
|
|
lut3d->is16bit = 1;
|
|
}
|
|
|
|
ff_fill_rgba_map(lut3d->rgba_map, inlink->format);
|
|
lut3d->step = av_get_padded_bits_per_pixel(desc) >> (3 + lut3d->is16bit);
|
|
|
|
#define SET_FUNC(name) do { \
|
|
if (lut3d->is16bit) lut3d->interp_16 = interp_16_##name; \
|
|
else lut3d->interp_8 = interp_8_##name; \
|
|
} while (0)
|
|
|
|
switch (lut3d->interpolation) {
|
|
case INTERPOLATE_NEAREST: SET_FUNC(nearest); break;
|
|
case INTERPOLATE_TRILINEAR: SET_FUNC(trilinear); break;
|
|
case INTERPOLATE_TETRAHEDRAL: SET_FUNC(tetrahedral); break;
|
|
default:
|
|
av_assert0(0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define FILTER(nbits) do { \
|
|
uint8_t *dstrow = out->data[0]; \
|
|
const uint8_t *srcrow = in ->data[0]; \
|
|
\
|
|
for (y = 0; y < inlink->h; y++) { \
|
|
uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \
|
|
const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \
|
|
for (x = 0; x < inlink->w * step; x += step) { \
|
|
struct rgbvec vec = lut3d->interp_##nbits(lut3d, src[x + r], src[x + g], src[x + b]); \
|
|
dst[x + r] = av_clip_uint##nbits(vec.r * (float)((1<<nbits) - 1)); \
|
|
dst[x + g] = av_clip_uint##nbits(vec.g * (float)((1<<nbits) - 1)); \
|
|
dst[x + b] = av_clip_uint##nbits(vec.b * (float)((1<<nbits) - 1)); \
|
|
if (!direct && step == 4) \
|
|
dst[x + a] = src[x + a]; \
|
|
} \
|
|
dstrow += out->linesize[0]; \
|
|
srcrow += in ->linesize[0]; \
|
|
} \
|
|
} while (0)
|
|
|
|
static AVFrame *apply_lut(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
int x, y, direct = 0;
|
|
AVFilterContext *ctx = inlink->dst;
|
|
LUT3DContext *lut3d = ctx->priv;
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
AVFrame *out;
|
|
const int step = lut3d->step;
|
|
const uint8_t r = lut3d->rgba_map[R];
|
|
const uint8_t g = lut3d->rgba_map[G];
|
|
const uint8_t b = lut3d->rgba_map[B];
|
|
const uint8_t a = lut3d->rgba_map[A];
|
|
|
|
if (av_frame_is_writable(in)) {
|
|
direct = 1;
|
|
out = in;
|
|
} else {
|
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!out) {
|
|
av_frame_free(&in);
|
|
return NULL;
|
|
}
|
|
av_frame_copy_props(out, in);
|
|
}
|
|
|
|
if (lut3d->is16bit) FILTER(16);
|
|
else FILTER(8);
|
|
|
|
if (!direct)
|
|
av_frame_free(&in);
|
|
|
|
return out;
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
AVFilterLink *outlink = inlink->dst->outputs[0];
|
|
AVFrame *out = apply_lut(inlink, in);
|
|
if (!out)
|
|
return AVERROR(ENOMEM);
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
#if CONFIG_LUT3D_FILTER
|
|
static const AVOption lut3d_options[] = {
|
|
{ "file", "set 3D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
COMMON_OPTIONS
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(lut3d);
|
|
|
|
static av_cold int lut3d_init(AVFilterContext *ctx)
|
|
{
|
|
int ret;
|
|
FILE *f;
|
|
const char *ext;
|
|
LUT3DContext *lut3d = ctx->priv;
|
|
|
|
if (!lut3d->file) {
|
|
set_identity_matrix(lut3d, 32);
|
|
return 0;
|
|
}
|
|
|
|
f = fopen(lut3d->file, "r");
|
|
if (!f) {
|
|
ret = AVERROR(errno);
|
|
av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut3d->file, av_err2str(ret));
|
|
return ret;
|
|
}
|
|
|
|
ext = strrchr(lut3d->file, '.');
|
|
if (!ext) {
|
|
av_log(ctx, AV_LOG_ERROR, "Unable to guess the format from the extension\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
ext++;
|
|
|
|
if (!av_strcasecmp(ext, "dat")) {
|
|
lut3d->lutsize = 33;
|
|
ret = parse_dat(ctx, f);
|
|
} else if (!av_strcasecmp(ext, "3dl")) {
|
|
ret = parse_3dl(ctx, f);
|
|
} else if (!av_strcasecmp(ext, "cube")) {
|
|
ret = parse_cube(ctx, f);
|
|
} else if (!av_strcasecmp(ext, "m3d")) {
|
|
ret = parse_m3d(ctx, f);
|
|
} else {
|
|
av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext);
|
|
ret = AVERROR(EINVAL);
|
|
}
|
|
|
|
if (!ret && !lut3d->lutsize) {
|
|
av_log(ctx, AV_LOG_ERROR, "3D LUT is empty\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
end:
|
|
fclose(f);
|
|
return ret;
|
|
}
|
|
|
|
static const AVFilterPad lut3d_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad lut3d_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_vf_lut3d = {
|
|
.name = "lut3d",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust colors using a 3D LUT."),
|
|
.priv_size = sizeof(LUT3DContext),
|
|
.init = lut3d_init,
|
|
.query_formats = query_formats,
|
|
.inputs = lut3d_inputs,
|
|
.outputs = lut3d_outputs,
|
|
.priv_class = &lut3d_class,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_HALDCLUT_FILTER
|
|
|
|
static void update_clut(LUT3DContext *lut3d, const AVFrame *frame)
|
|
{
|
|
const uint8_t *data = frame->data[0];
|
|
const int linesize = frame->linesize[0];
|
|
const int w = lut3d->clut_width;
|
|
const int step = lut3d->clut_step;
|
|
const uint8_t *rgba_map = lut3d->clut_rgba_map;
|
|
const int level = lut3d->lutsize;
|
|
|
|
#define LOAD_CLUT(nbits) do { \
|
|
int i, j, k, x = 0, y = 0; \
|
|
\
|
|
for (k = 0; k < level; k++) { \
|
|
for (j = 0; j < level; j++) { \
|
|
for (i = 0; i < level; i++) { \
|
|
const uint##nbits##_t *src = (const uint##nbits##_t *) \
|
|
(data + y*linesize + x*step); \
|
|
struct rgbvec *vec = &lut3d->lut[k][j][i]; \
|
|
vec->r = src[rgba_map[0]] / (float)((1<<(nbits)) - 1); \
|
|
vec->g = src[rgba_map[1]] / (float)((1<<(nbits)) - 1); \
|
|
vec->b = src[rgba_map[2]] / (float)((1<<(nbits)) - 1); \
|
|
if (++x == w) { \
|
|
x = 0; \
|
|
y++; \
|
|
} \
|
|
} \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
if (!lut3d->clut_is16bit) LOAD_CLUT(8);
|
|
else LOAD_CLUT(16);
|
|
}
|
|
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
|
|
outlink->w = ctx->inputs[0]->w;
|
|
outlink->h = ctx->inputs[0]->h;
|
|
outlink->time_base = ctx->inputs[0]->time_base;
|
|
return 0;
|
|
}
|
|
|
|
static int filter_frame_main(AVFilterLink *inlink, AVFrame *inpicref)
|
|
{
|
|
LUT3DContext *s = inlink->dst->priv;
|
|
return ff_dualinput_filter_frame_main(&s->dinput, inlink, inpicref);
|
|
}
|
|
|
|
static int filter_frame_clut(AVFilterLink *inlink, AVFrame *inpicref)
|
|
{
|
|
LUT3DContext *s = inlink->dst->priv;
|
|
return ff_dualinput_filter_frame_second(&s->dinput, inlink, inpicref);
|
|
}
|
|
|
|
static int request_frame(AVFilterLink *outlink)
|
|
{
|
|
LUT3DContext *s = outlink->src->priv;
|
|
return ff_dualinput_request_frame(&s->dinput, outlink);
|
|
}
|
|
|
|
static int config_clut(AVFilterLink *inlink)
|
|
{
|
|
int size, level, w, h;
|
|
AVFilterContext *ctx = inlink->dst;
|
|
LUT3DContext *lut3d = ctx->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
lut3d->clut_is16bit = 0;
|
|
switch (inlink->format) {
|
|
case AV_PIX_FMT_RGB48:
|
|
case AV_PIX_FMT_BGR48:
|
|
case AV_PIX_FMT_RGBA64:
|
|
case AV_PIX_FMT_BGRA64:
|
|
lut3d->clut_is16bit = 1;
|
|
}
|
|
|
|
lut3d->clut_step = av_get_padded_bits_per_pixel(desc) >> 3;
|
|
ff_fill_rgba_map(lut3d->clut_rgba_map, inlink->format);
|
|
|
|
if (inlink->w > inlink->h)
|
|
av_log(ctx, AV_LOG_INFO, "Padding on the right (%dpx) of the "
|
|
"Hald CLUT will be ignored\n", inlink->w - inlink->h);
|
|
else if (inlink->w < inlink->h)
|
|
av_log(ctx, AV_LOG_INFO, "Padding at the bottom (%dpx) of the "
|
|
"Hald CLUT will be ignored\n", inlink->h - inlink->w);
|
|
lut3d->clut_width = w = h = FFMIN(inlink->w, inlink->h);
|
|
|
|
for (level = 1; level*level*level < w; level++);
|
|
size = level*level*level;
|
|
if (size != w) {
|
|
av_log(ctx, AV_LOG_WARNING, "The Hald CLUT width does not match the level\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
av_assert0(w == h && w == size);
|
|
level *= level;
|
|
if (level > MAX_LEVEL) {
|
|
const int max_clut_level = sqrt(MAX_LEVEL);
|
|
const int max_clut_size = max_clut_level*max_clut_level*max_clut_level;
|
|
av_log(ctx, AV_LOG_ERROR, "Too large Hald CLUT "
|
|
"(maximum level is %d, or %dx%d CLUT)\n",
|
|
max_clut_level, max_clut_size, max_clut_size);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
lut3d->lutsize = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static AVFrame *update_apply_clut(AVFilterContext *ctx, AVFrame *main,
|
|
const AVFrame *second)
|
|
{
|
|
AVFilterLink *inlink = ctx->inputs[0];
|
|
update_clut(ctx->priv, second);
|
|
return apply_lut(inlink, main);
|
|
}
|
|
|
|
static av_cold int haldclut_init(AVFilterContext *ctx)
|
|
{
|
|
LUT3DContext *lut3d = ctx->priv;
|
|
lut3d->dinput.process = update_apply_clut;
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void haldclut_uninit(AVFilterContext *ctx)
|
|
{
|
|
LUT3DContext *lut3d = ctx->priv;
|
|
ff_dualinput_uninit(&lut3d->dinput);
|
|
}
|
|
|
|
static const AVOption haldclut_options[] = {
|
|
{ "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
|
|
{ "repeatlast", "continue applying the last clut after eos", OFFSET(dinput.repeatlast), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS },
|
|
COMMON_OPTIONS
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(haldclut);
|
|
|
|
static const AVFilterPad haldclut_inputs[] = {
|
|
{
|
|
.name = "main",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame_main,
|
|
.config_props = config_input,
|
|
},{
|
|
.name = "clut",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame_clut,
|
|
.config_props = config_clut,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad haldclut_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.request_frame = request_frame,
|
|
.config_props = config_output,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_vf_haldclut = {
|
|
.name = "haldclut",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust colors using a Hald CLUT."),
|
|
.priv_size = sizeof(LUT3DContext),
|
|
.init = haldclut_init,
|
|
.uninit = haldclut_uninit,
|
|
.query_formats = query_formats,
|
|
.inputs = haldclut_inputs,
|
|
.outputs = haldclut_outputs,
|
|
.priv_class = &haldclut_class,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
|
|
};
|
|
#endif
|