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FFmpeg/libavfilter/vf_lut3d.c
Andreas Rheinhardt b4f5201967 avfilter: Replace query_formats callback with union of list and callback 
If one looks at the many query_formats callbacks in existence,
one will immediately recognize that there is one type of default
callback for video and a slightly different default callback for
audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);"
for video with a filter-specific pix_fmts list. For audio, it is
the same with a filter-specific sample_fmts list together with
ff_set_common_all_samplerates() and ff_set_common_all_channel_counts().

This commit allows to remove the boilerplate query_formats callbacks
by replacing said callback with a union consisting the old callback
and pointers for pixel and sample format arrays. For the not uncommon
case in which these lists only contain a single entry (besides the
sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also
added to the union to store them directly in the AVFilter,
thereby avoiding a relocation.

The state of said union will be contained in a new, dedicated AVFilter
field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t
in order to create a hole for this new field; this is no problem, as
the maximum of all the nb_inputs is four; for nb_outputs it is only
two).

The state's default value coincides with the earlier default of
query_formats being unset, namely that the filter accepts all formats
(and also sample rates and channel counts/layouts for audio)
provided that these properties agree coincide for all inputs and
outputs.

By using different union members for audio and video filters
the type-unsafety of using the same functions for audio and video
lists will furthermore be more confined to formats.c than before.

When the new fields are used, they will also avoid allocations:
Currently something nearly equivalent to ff_default_query_formats()
is called after every successful call to a query_formats callback;
yet in the common case that the newly allocated AVFilterFormats
are not used at all (namely if there are no free links) these newly
allocated AVFilterFormats are freed again without ever being used.
Filters no longer using the callback will not exhibit this any more.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-10-05 17:48:25 +02:00

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/*
* 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
*/
/**
* @file
* 3D Lookup table filter
*/
#include "float.h"
#include "libavutil/opt.h"
#include "libavutil/file.h"
#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"
#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
#define COMMON_OPTIONS \
{ "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, TFLAGS, "interp_mode" }, \
{ "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST}, 0, 0, TFLAGS, "interp_mode" }, \
{ "trilinear", "interpolate values using the 8 points defining a cube", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TRILINEAR}, 0, 0, TFLAGS, "interp_mode" }, \
{ "tetrahedral", "interpolate values using a tetrahedron", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, 0, TFLAGS, "interp_mode" }, \
{ "pyramid", "interpolate values using a pyramid", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_PYRAMID}, 0, 0, TFLAGS, "interp_mode" }, \
{ "prism", "interpolate values using a prism", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_PRISM}, 0, 0, TFLAGS, "interp_mode" }, \
{ NULL }
#define EXPONENT_MASK 0x7F800000
#define MANTISSA_MASK 0x007FFFFF
#define SIGN_MASK 0x80000000
static inline float sanitizef(float f)
{
union av_intfloat32 t;
t.f = f;
if ((t.i & EXPONENT_MASK) == EXPONENT_MASK) {
if ((t.i & MANTISSA_MASK) != 0) {
// NAN
return 0.0f;
} else if (t.i & SIGN_MASK) {
// -INF
return -FLT_MAX;
} else {
// +INF
return FLT_MAX;
}
}
return f;
}
static inline float lerpf(float v0, float v1, float f)
{
return v0 + (v1 - v0) * f;
}
static inline struct rgbvec lerp(const struct rgbvec *v0, const struct rgbvec *v1, float f)
{
struct rgbvec v = {
lerpf(v0->r, v1->r, f), lerpf(v0->g, v1->g, f), lerpf(v0->b, v1->b, f)
};
return v;
}
#define NEAR(x) ((int)((x) + .5))
#define PREV(x) ((int)(x))
#define NEXT(x) (FFMIN((int)(x) + 1, lut3d->lutsize - 1))
/**
* Get the nearest defined point
*/
static inline struct rgbvec interp_nearest(const LUT3DContext *lut3d,
const struct rgbvec *s)
{
return lut3d->lut[NEAR(s->r) * lut3d->lutsize2 + NEAR(s->g) * lut3d->lutsize + NEAR(s->b)];
}
/**
* Interpolate using the 8 vertices of a cube
* @see https://en.wikipedia.org/wiki/Trilinear_interpolation
*/
static inline struct rgbvec interp_trilinear(const LUT3DContext *lut3d,
const struct rgbvec *s)
{
const int lutsize2 = lut3d->lutsize2;
const int lutsize = lut3d->lutsize;
const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
const struct rgbvec c000 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c011 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + next[2]];
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c101 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c110 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c111 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + next[2]];
const struct rgbvec c00 = lerp(&c000, &c100, d.r);
const struct rgbvec c10 = lerp(&c010, &c110, d.r);
const struct rgbvec c01 = lerp(&c001, &c101, d.r);
const struct rgbvec c11 = lerp(&c011, &c111, d.r);
const struct rgbvec c0 = lerp(&c00, &c10, d.g);
const struct rgbvec c1 = lerp(&c01, &c11, d.g);
const struct rgbvec c = lerp(&c0, &c1, d.b);
return c;
}
static inline struct rgbvec interp_pyramid(const LUT3DContext *lut3d,
const struct rgbvec *s)
{
const int lutsize2 = lut3d->lutsize2;
const int lutsize = lut3d->lutsize;
const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
const struct rgbvec c000 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c111 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + next[2]];
struct rgbvec c;
if (d.g > d.r && d.b > d.r) {
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c011 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + next[2]];
c.r = c000.r + (c111.r - c011.r) * d.r + (c010.r - c000.r) * d.g + (c001.r - c000.r) * d.b +
(c011.r - c001.r - c010.r + c000.r) * d.g * d.b;
c.g = c000.g + (c111.g - c011.g) * d.r + (c010.g - c000.g) * d.g + (c001.g - c000.g) * d.b +
(c011.g - c001.g - c010.g + c000.g) * d.g * d.b;
c.b = c000.b + (c111.b - c011.b) * d.r + (c010.b - c000.b) * d.g + (c001.b - c000.b) * d.b +
(c011.b - c001.b - c010.b + c000.b) * d.g * d.b;
} else if (d.r > d.g && d.b > d.g) {
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c101 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + next[2]];
c.r = c000.r + (c100.r - c000.r) * d.r + (c111.r - c101.r) * d.g + (c001.r - c000.r) * d.b +
(c101.r - c001.r - c100.r + c000.r) * d.r * d.b;
c.g = c000.g + (c100.g - c000.g) * d.r + (c111.g - c101.g) * d.g + (c001.g - c000.g) * d.b +
(c101.g - c001.g - c100.g + c000.g) * d.r * d.b;
c.b = c000.b + (c100.b - c000.b) * d.r + (c111.b - c101.b) * d.g + (c001.b - c000.b) * d.b +
(c101.b - c001.b - c100.b + c000.b) * d.r * d.b;
} else {
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c110 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
c.r = c000.r + (c100.r - c000.r) * d.r + (c010.r - c000.r) * d.g + (c111.r - c110.r) * d.b +
(c110.r - c100.r - c010.r + c000.r) * d.r * d.g;
c.g = c000.g + (c100.g - c000.g) * d.r + (c010.g - c000.g) * d.g + (c111.g - c110.g) * d.b +
(c110.g - c100.g - c010.g + c000.g) * d.r * d.g;
c.b = c000.b + (c100.b - c000.b) * d.r + (c010.b - c000.b) * d.g + (c111.b - c110.b) * d.b +
(c110.b - c100.b - c010.b + c000.b) * d.r * d.g;
}
return c;
}
static inline struct rgbvec interp_prism(const LUT3DContext *lut3d,
const struct rgbvec *s)
{
const int lutsize2 = lut3d->lutsize2;
const int lutsize = lut3d->lutsize;
const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
const struct rgbvec c000 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c101 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c111 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + next[2]];
struct rgbvec c;
if (d.b > d.r) {
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c011 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + next[2]];
c.r = c000.r + (c001.r - c000.r) * d.b + (c101.r - c001.r) * d.r + (c010.r - c000.r) * d.g +
(c000.r - c010.r - c001.r + c011.r) * d.b * d.g +
(c001.r - c011.r - c101.r + c111.r) * d.r * d.g;
c.g = c000.g + (c001.g - c000.g) * d.b + (c101.g - c001.g) * d.r + (c010.g - c000.g) * d.g +
(c000.g - c010.g - c001.g + c011.g) * d.b * d.g +
(c001.g - c011.g - c101.g + c111.g) * d.r * d.g;
c.b = c000.b + (c001.b - c000.b) * d.b + (c101.b - c001.b) * d.r + (c010.b - c000.b) * d.g +
(c000.b - c010.b - c001.b + c011.b) * d.b * d.g +
(c001.b - c011.b - c101.b + c111.b) * d.r * d.g;
} else {
const struct rgbvec c110 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
c.r = c000.r + (c101.r - c100.r) * d.b + (c100.r - c000.r) * d.r + (c010.r - c000.r) * d.g +
(c100.r - c110.r - c101.r + c111.r) * d.b * d.g +
(c000.r - c010.r - c100.r + c110.r) * d.r * d.g;
c.g = c000.g + (c101.g - c100.g) * d.b + (c100.g - c000.g) * d.r + (c010.g - c000.g) * d.g +
(c100.g - c110.g - c101.g + c111.g) * d.b * d.g +
(c000.g - c010.g - c100.g + c110.g) * d.r * d.g;
c.b = c000.b + (c101.b - c100.b) * d.b + (c100.b - c000.b) * d.r + (c010.b - c000.b) * d.g +
(c100.b - c110.b - c101.b + c111.b) * d.b * d.g +
(c000.b - c010.b - c100.b + c110.b) * d.r * d.g;
}
return c;
}
/**
* Tetrahedral interpolation. Based on code found in Truelight Software Library paper.
* @see http://www.filmlight.ltd.uk/pdf/whitepapers/FL-TL-TN-0057-SoftwareLib.pdf
*/
static inline struct rgbvec interp_tetrahedral(const LUT3DContext *lut3d,
const struct rgbvec *s)
{
const int lutsize2 = lut3d->lutsize2;
const int lutsize = lut3d->lutsize;
const int prev[] = {PREV(s->r), PREV(s->g), PREV(s->b)};
const int next[] = {NEXT(s->r), NEXT(s->g), NEXT(s->b)};
const struct rgbvec d = {s->r - prev[0], s->g - prev[1], s->b - prev[2]};
const struct rgbvec c000 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c111 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + next[2]];
struct rgbvec c;
if (d.r > d.g) {
if (d.g > d.b) {
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c110 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + prev[2]];
c.r = (1-d.r) * c000.r + (d.r-d.g) * c100.r + (d.g-d.b) * c110.r + (d.b) * c111.r;
c.g = (1-d.r) * c000.g + (d.r-d.g) * c100.g + (d.g-d.b) * c110.g + (d.b) * c111.g;
c.b = (1-d.r) * c000.b + (d.r-d.g) * c100.b + (d.g-d.b) * c110.b + (d.b) * c111.b;
} else if (d.r > d.b) {
const struct rgbvec c100 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + prev[2]];
const struct rgbvec c101 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + next[2]];
c.r = (1-d.r) * c000.r + (d.r-d.b) * c100.r + (d.b-d.g) * c101.r + (d.g) * c111.r;
c.g = (1-d.r) * c000.g + (d.r-d.b) * c100.g + (d.b-d.g) * c101.g + (d.g) * c111.g;
c.b = (1-d.r) * c000.b + (d.r-d.b) * c100.b + (d.b-d.g) * c101.b + (d.g) * c111.b;
} else {
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c101 = lut3d->lut[next[0] * lutsize2 + prev[1] * lutsize + next[2]];
c.r = (1-d.b) * c000.r + (d.b-d.r) * c001.r + (d.r-d.g) * c101.r + (d.g) * c111.r;
c.g = (1-d.b) * c000.g + (d.b-d.r) * c001.g + (d.r-d.g) * c101.g + (d.g) * c111.g;
c.b = (1-d.b) * c000.b + (d.b-d.r) * c001.b + (d.r-d.g) * c101.b + (d.g) * c111.b;
}
} else {
if (d.b > d.g) {
const struct rgbvec c001 = lut3d->lut[prev[0] * lutsize2 + prev[1] * lutsize + next[2]];
const struct rgbvec c011 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + next[2]];
c.r = (1-d.b) * c000.r + (d.b-d.g) * c001.r + (d.g-d.r) * c011.r + (d.r) * c111.r;
c.g = (1-d.b) * c000.g + (d.b-d.g) * c001.g + (d.g-d.r) * c011.g + (d.r) * c111.g;
c.b = (1-d.b) * c000.b + (d.b-d.g) * c001.b + (d.g-d.r) * c011.b + (d.r) * c111.b;
} else if (d.b > d.r) {
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c011 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + next[2]];
c.r = (1-d.g) * c000.r + (d.g-d.b) * c010.r + (d.b-d.r) * c011.r + (d.r) * c111.r;
c.g = (1-d.g) * c000.g + (d.g-d.b) * c010.g + (d.b-d.r) * c011.g + (d.r) * c111.g;
c.b = (1-d.g) * c000.b + (d.g-d.b) * c010.b + (d.b-d.r) * c011.b + (d.r) * c111.b;
} else {
const struct rgbvec c010 = lut3d->lut[prev[0] * lutsize2 + next[1] * lutsize + prev[2]];
const struct rgbvec c110 = lut3d->lut[next[0] * lutsize2 + next[1] * lutsize + prev[2]];
c.r = (1-d.g) * c000.r + (d.g-d.r) * c010.r + (d.r-d.b) * c110.r + (d.b) * c111.r;
c.g = (1-d.g) * c000.g + (d.g-d.r) * c010.g + (d.r-d.b) * c110.g + (d.b) * c111.g;
c.b = (1-d.g) * c000.b + (d.g-d.r) * c010.b + (d.r-d.b) * c110.b + (d.b) * c111.b;
}
}
return c;
}
static inline float prelut_interp_1d_linear(const Lut3DPreLut *prelut,
int idx, const float s)
{
const int lut_max = prelut->size - 1;
const float scaled = (s - prelut->min[idx]) * prelut->scale[idx];
const float x = av_clipf(scaled, 0.0f, lut_max);
const int prev = PREV(x);
const int next = FFMIN((int)(x) + 1, lut_max);
const float p = prelut->lut[idx][prev];
const float n = prelut->lut[idx][next];
const float d = x - (float)prev;
return lerpf(p, n, d);
}
static inline struct rgbvec apply_prelut(const Lut3DPreLut *prelut,
const struct rgbvec *s)
{
struct rgbvec c;
if (prelut->size <= 0)
return *s;
c.r = prelut_interp_1d_linear(prelut, 0, s->r);
c.g = prelut_interp_1d_linear(prelut, 1, s->g);
c.b = prelut_interp_1d_linear(prelut, 2, s->b);
return c;
}
#define DEFINE_INTERP_FUNC_PLANAR(name, nbits, depth) \
static int interp_##nbits##_##name##_p##depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
int x, y; \
const LUT3DContext *lut3d = ctx->priv; \
const Lut3DPreLut *prelut = &lut3d->prelut; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *grow = out->data[0] + slice_start * out->linesize[0]; \
uint8_t *brow = out->data[1] + slice_start * out->linesize[1]; \
uint8_t *rrow = out->data[2] + slice_start * out->linesize[2]; \
uint8_t *arow = out->data[3] + slice_start * out->linesize[3]; \
const uint8_t *srcgrow = in->data[0] + slice_start * in->linesize[0]; \
const uint8_t *srcbrow = in->data[1] + slice_start * in->linesize[1]; \
const uint8_t *srcrrow = in->data[2] + slice_start * in->linesize[2]; \
const uint8_t *srcarow = in->data[3] + slice_start * in->linesize[3]; \
const float lut_max = lut3d->lutsize - 1; \
const float scale_f = 1.0f / ((1<<depth) - 1); \
const float scale_r = lut3d->scale.r * lut_max; \
const float scale_g = lut3d->scale.g * lut_max; \
const float scale_b = lut3d->scale.b * lut_max; \
\
for (y = slice_start; y < slice_end; y++) { \
uint##nbits##_t *dstg = (uint##nbits##_t *)grow; \
uint##nbits##_t *dstb = (uint##nbits##_t *)brow; \
uint##nbits##_t *dstr = (uint##nbits##_t *)rrow; \
uint##nbits##_t *dsta = (uint##nbits##_t *)arow; \
const uint##nbits##_t *srcg = (const uint##nbits##_t *)srcgrow; \
const uint##nbits##_t *srcb = (const uint##nbits##_t *)srcbrow; \
const uint##nbits##_t *srcr = (const uint##nbits##_t *)srcrrow; \
const uint##nbits##_t *srca = (const uint##nbits##_t *)srcarow; \
for (x = 0; x < in->width; x++) { \
const struct rgbvec rgb = {srcr[x] * scale_f, \
srcg[x] * scale_f, \
srcb[x] * scale_f}; \
const struct rgbvec prelut_rgb = apply_prelut(prelut, &rgb); \
const struct rgbvec scaled_rgb = {av_clipf(prelut_rgb.r * scale_r, 0, lut_max), \
av_clipf(prelut_rgb.g * scale_g, 0, lut_max), \
av_clipf(prelut_rgb.b * scale_b, 0, lut_max)}; \
struct rgbvec vec = interp_##name(lut3d, &scaled_rgb); \
dstr[x] = av_clip_uintp2(vec.r * (float)((1<<depth) - 1), depth); \
dstg[x] = av_clip_uintp2(vec.g * (float)((1<<depth) - 1), depth); \
dstb[x] = av_clip_uintp2(vec.b * (float)((1<<depth) - 1), depth); \
if (!direct && in->linesize[3]) \
dsta[x] = srca[x]; \
} \
grow += out->linesize[0]; \
brow += out->linesize[1]; \
rrow += out->linesize[2]; \
arow += out->linesize[3]; \
srcgrow += in->linesize[0]; \
srcbrow += in->linesize[1]; \
srcrrow += in->linesize[2]; \
srcarow += in->linesize[3]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC_PLANAR(nearest, 8, 8)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 8, 8)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 8, 8)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 8, 8)
DEFINE_INTERP_FUNC_PLANAR(prism, 8, 8)
DEFINE_INTERP_FUNC_PLANAR(nearest, 16, 9)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 16, 9)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 16, 9)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 16, 9)
DEFINE_INTERP_FUNC_PLANAR(prism, 16, 9)
DEFINE_INTERP_FUNC_PLANAR(nearest, 16, 10)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 16, 10)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 16, 10)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 16, 10)
DEFINE_INTERP_FUNC_PLANAR(prism, 16, 10)
DEFINE_INTERP_FUNC_PLANAR(nearest, 16, 12)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 16, 12)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 16, 12)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 16, 12)
DEFINE_INTERP_FUNC_PLANAR(prism, 16, 12)
DEFINE_INTERP_FUNC_PLANAR(nearest, 16, 14)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 16, 14)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 16, 14)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 16, 14)
DEFINE_INTERP_FUNC_PLANAR(prism, 16, 14)
DEFINE_INTERP_FUNC_PLANAR(nearest, 16, 16)
DEFINE_INTERP_FUNC_PLANAR(trilinear, 16, 16)
DEFINE_INTERP_FUNC_PLANAR(tetrahedral, 16, 16)
DEFINE_INTERP_FUNC_PLANAR(pyramid, 16, 16)
DEFINE_INTERP_FUNC_PLANAR(prism, 16, 16)
#define DEFINE_INTERP_FUNC_PLANAR_FLOAT(name, depth) \
static int interp_##name##_pf##depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
int x, y; \
const LUT3DContext *lut3d = ctx->priv; \
const Lut3DPreLut *prelut = &lut3d->prelut; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *grow = out->data[0] + slice_start * out->linesize[0]; \
uint8_t *brow = out->data[1] + slice_start * out->linesize[1]; \
uint8_t *rrow = out->data[2] + slice_start * out->linesize[2]; \
uint8_t *arow = out->data[3] + slice_start * out->linesize[3]; \
const uint8_t *srcgrow = in->data[0] + slice_start * in->linesize[0]; \
const uint8_t *srcbrow = in->data[1] + slice_start * in->linesize[1]; \
const uint8_t *srcrrow = in->data[2] + slice_start * in->linesize[2]; \
const uint8_t *srcarow = in->data[3] + slice_start * in->linesize[3]; \
const float lut_max = lut3d->lutsize - 1; \
const float scale_r = lut3d->scale.r * lut_max; \
const float scale_g = lut3d->scale.g * lut_max; \
const float scale_b = lut3d->scale.b * lut_max; \
\
for (y = slice_start; y < slice_end; y++) { \
float *dstg = (float *)grow; \
float *dstb = (float *)brow; \
float *dstr = (float *)rrow; \
float *dsta = (float *)arow; \
const float *srcg = (const float *)srcgrow; \
const float *srcb = (const float *)srcbrow; \
const float *srcr = (const float *)srcrrow; \
const float *srca = (const float *)srcarow; \
for (x = 0; x < in->width; x++) { \
const struct rgbvec rgb = {sanitizef(srcr[x]), \
sanitizef(srcg[x]), \
sanitizef(srcb[x])}; \
const struct rgbvec prelut_rgb = apply_prelut(prelut, &rgb); \
const struct rgbvec scaled_rgb = {av_clipf(prelut_rgb.r * scale_r, 0, lut_max), \
av_clipf(prelut_rgb.g * scale_g, 0, lut_max), \
av_clipf(prelut_rgb.b * scale_b, 0, lut_max)}; \
struct rgbvec vec = interp_##name(lut3d, &scaled_rgb); \
dstr[x] = vec.r; \
dstg[x] = vec.g; \
dstb[x] = vec.b; \
if (!direct && in->linesize[3]) \
dsta[x] = srca[x]; \
} \
grow += out->linesize[0]; \
brow += out->linesize[1]; \
rrow += out->linesize[2]; \
arow += out->linesize[3]; \
srcgrow += in->linesize[0]; \
srcbrow += in->linesize[1]; \
srcrrow += in->linesize[2]; \
srcarow += in->linesize[3]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC_PLANAR_FLOAT(nearest, 32)
DEFINE_INTERP_FUNC_PLANAR_FLOAT(trilinear, 32)
DEFINE_INTERP_FUNC_PLANAR_FLOAT(tetrahedral, 32)
DEFINE_INTERP_FUNC_PLANAR_FLOAT(pyramid, 32)
DEFINE_INTERP_FUNC_PLANAR_FLOAT(prism, 32)
#define DEFINE_INTERP_FUNC(name, nbits) \
static int interp_##nbits##_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
int x, y; \
const LUT3DContext *lut3d = ctx->priv; \
const Lut3DPreLut *prelut = &lut3d->prelut; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
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]; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *dstrow = out->data[0] + slice_start * out->linesize[0]; \
const uint8_t *srcrow = in ->data[0] + slice_start * in ->linesize[0]; \
const float lut_max = lut3d->lutsize - 1; \
const float scale_f = 1.0f / ((1<<nbits) - 1); \
const float scale_r = lut3d->scale.r * lut_max; \
const float scale_g = lut3d->scale.g * lut_max; \
const float scale_b = lut3d->scale.b * lut_max; \
\
for (y = slice_start; y < slice_end; y++) { \
uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \
const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \
for (x = 0; x < in->width * step; x += step) { \
const struct rgbvec rgb = {src[x + r] * scale_f, \
src[x + g] * scale_f, \
src[x + b] * scale_f}; \
const struct rgbvec prelut_rgb = apply_prelut(prelut, &rgb); \
const struct rgbvec scaled_rgb = {av_clipf(prelut_rgb.r * scale_r, 0, lut_max), \
av_clipf(prelut_rgb.g * scale_g, 0, lut_max), \
av_clipf(prelut_rgb.b * scale_b, 0, lut_max)}; \
struct rgbvec vec = interp_##name(lut3d, &scaled_rgb); \
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]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC(nearest, 8)
DEFINE_INTERP_FUNC(trilinear, 8)
DEFINE_INTERP_FUNC(tetrahedral, 8)
DEFINE_INTERP_FUNC(pyramid, 8)
DEFINE_INTERP_FUNC(prism, 8)
DEFINE_INTERP_FUNC(nearest, 16)
DEFINE_INTERP_FUNC(trilinear, 16)
DEFINE_INTERP_FUNC(tetrahedral, 16)
DEFINE_INTERP_FUNC(pyramid, 16)
DEFINE_INTERP_FUNC(prism, 16)
#define MAX_LINE_SIZE 512
static int skip_line(const char *p)
{
while (*p && av_isspace(*p))
p++;
return !*p || *p == '#';
}
static char* fget_next_word(char* dst, int max, FILE* f)
{
int c;
char *p = dst;
/* for null */
max--;
/* skip until next non whitespace char */
while ((c = fgetc(f)) != EOF) {
if (av_isspace(c))
continue;
*p++ = c;
max--;
break;
}
/* get max bytes or up until next whitespace char */
for (; max > 0; max--) {
if ((c = fgetc(f)) == EOF)
break;
if (av_isspace(c))
break;
*p++ = c;
}
*p = 0;
if (p == dst)
return NULL;
return p;
}
#define NEXT_LINE(loop_cond) do { \
if (!fgets(line, sizeof(line), f)) { \
av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n"); \
return AVERROR_INVALIDDATA; \
} \
} while (loop_cond)
#define NEXT_LINE_OR_GOTO(loop_cond, label) do { \
if (!fgets(line, sizeof(line), f)) { \
av_log(ctx, AV_LOG_ERROR, "Unexpected EOF\n"); \
ret = AVERROR_INVALIDDATA; \
goto label; \
} \
} while (loop_cond)
static int allocate_3dlut(AVFilterContext *ctx, int lutsize, int prelut)
{
LUT3DContext *lut3d = ctx->priv;
int i;
if (lutsize < 2 || lutsize > MAX_LEVEL) {
av_log(ctx, AV_LOG_ERROR, "Too large or invalid 3D LUT size\n");
return AVERROR(EINVAL);
}
av_freep(&lut3d->lut);
lut3d->lut = av_malloc_array(lutsize * lutsize * lutsize, sizeof(*lut3d->lut));
if (!lut3d->lut)
return AVERROR(ENOMEM);
if (prelut) {
lut3d->prelut.size = PRELUT_SIZE;
for (i = 0; i < 3; i++) {
av_freep(&lut3d->prelut.lut[i]);
lut3d->prelut.lut[i] = av_malloc_array(PRELUT_SIZE, sizeof(*lut3d->prelut.lut[0]));
if (!lut3d->prelut.lut[i])
return AVERROR(ENOMEM);
}
} else {
lut3d->prelut.size = 0;
for (i = 0; i < 3; i++) {
av_freep(&lut3d->prelut.lut[i]);
}
}
lut3d->lutsize = lutsize;
lut3d->lutsize2 = lutsize * lutsize;
return 0;
}
/* Basically r g and b float values on each line, with a facultative 3DLUTSIZE
* directive; seems to be generated by Davinci */
static int parse_dat(AVFilterContext *ctx, FILE *f)
{
LUT3DContext *lut3d = ctx->priv;
char line[MAX_LINE_SIZE];
int ret, i, j, k, size, size2;
lut3d->lutsize = size = 33;
size2 = size * size;
NEXT_LINE(skip_line(line));
if (!strncmp(line, "3DLUTSIZE ", 10)) {
size = strtol(line + 10, NULL, 0);
NEXT_LINE(skip_line(line));
}
ret = allocate_3dlut(ctx, size, 0);
if (ret < 0)
return ret;
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
struct rgbvec *vec = &lut3d->lut[k * size2 + j * size + i];
if (k != 0 || j != 0 || i != 0)
NEXT_LINE(skip_line(line));
if (av_sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3)
return AVERROR_INVALIDDATA;
}
}
}
return 0;
}
/* Iridas format */
static int parse_cube(AVFilterContext *ctx, FILE *f)
{
LUT3DContext *lut3d = ctx->priv;
char line[MAX_LINE_SIZE];
float min[3] = {0.0, 0.0, 0.0};
float max[3] = {1.0, 1.0, 1.0};
while (fgets(line, sizeof(line), f)) {
if (!strncmp(line, "LUT_3D_SIZE", 11)) {
int ret, i, j, k;
const int size = strtol(line + 12, NULL, 0);
const int size2 = size * size;
ret = allocate_3dlut(ctx, size, 0);
if (ret < 0)
return ret;
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
struct rgbvec *vec = &lut3d->lut[i * size2 + j * size + k];
do {
try_again:
NEXT_LINE(0);
if (!strncmp(line, "DOMAIN_", 7)) {
float *vals = NULL;
if (!strncmp(line + 7, "MIN ", 4)) vals = min;
else if (!strncmp(line + 7, "MAX ", 4)) vals = max;
if (!vals)
return AVERROR_INVALIDDATA;
av_sscanf(line + 11, "%f %f %f", vals, vals + 1, vals + 2);
av_log(ctx, AV_LOG_DEBUG, "min: %f %f %f | max: %f %f %f\n",
min[0], min[1], min[2], max[0], max[1], max[2]);
goto try_again;
} else if (!strncmp(line, "TITLE", 5)) {
goto try_again;
}
} while (skip_line(line));
if (av_sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3)
return AVERROR_INVALIDDATA;
}
}
}
break;
}
}
lut3d->scale.r = av_clipf(1. / (max[0] - min[0]), 0.f, 1.f);
lut3d->scale.g = av_clipf(1. / (max[1] - min[1]), 0.f, 1.f);
lut3d->scale.b = av_clipf(1. / (max[2] - min[2]), 0.f, 1.f);
return 0;
}
/* Assume 17x17x17 LUT with a 16-bit depth
* FIXME: it seems there are various 3dl formats */
static int parse_3dl(AVFilterContext *ctx, FILE *f)
{
char line[MAX_LINE_SIZE];
LUT3DContext *lut3d = ctx->priv;
int ret, i, j, k;
const int size = 17;
const int size2 = 17 * 17;
const float scale = 16*16*16;
lut3d->lutsize = size;
ret = allocate_3dlut(ctx, size, 0);
if (ret < 0)
return ret;
NEXT_LINE(skip_line(line));
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
int r, g, b;
struct rgbvec *vec = &lut3d->lut[k * size2 + j * size + i];
NEXT_LINE(skip_line(line));
if (av_sscanf(line, "%d %d %d", &r, &g, &b) != 3)
return AVERROR_INVALIDDATA;
vec->r = r / scale;
vec->g = g / scale;
vec->b = b / scale;
}
}
}
return 0;
}
/* Pandora format */
static int parse_m3d(AVFilterContext *ctx, FILE *f)
{
LUT3DContext *lut3d = ctx->priv;
float scale;
int ret, i, j, k, size, size2, in = -1, out = -1;
char line[MAX_LINE_SIZE];
uint8_t rgb_map[3] = {0, 1, 2};
while (fgets(line, sizeof(line), f)) {
if (!strncmp(line, "in", 2)) in = strtol(line + 2, NULL, 0);
else if (!strncmp(line, "out", 3)) out = strtol(line + 3, NULL, 0);
else if (!strncmp(line, "values", 6)) {
const char *p = line + 6;
#define SET_COLOR(id) do { \
while (av_isspace(*p)) \
p++; \
switch (*p) { \
case 'r': rgb_map[id] = 0; break; \
case 'g': rgb_map[id] = 1; break; \
case 'b': rgb_map[id] = 2; break; \
} \
while (*p && !av_isspace(*p)) \
p++; \
} while (0)
SET_COLOR(0);
SET_COLOR(1);
SET_COLOR(2);
break;
}
}
if (in == -1 || out == -1) {
av_log(ctx, AV_LOG_ERROR, "in and out must be defined\n");
return AVERROR_INVALIDDATA;
}
if (in < 2 || out < 2 ||
in > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL ||
out > MAX_LEVEL*MAX_LEVEL*MAX_LEVEL) {
av_log(ctx, AV_LOG_ERROR, "invalid in (%d) or out (%d)\n", in, out);
return AVERROR_INVALIDDATA;
}
for (size = 1; size*size*size < in; size++);
lut3d->lutsize = size;
size2 = size * size;
ret = allocate_3dlut(ctx, size, 0);
if (ret < 0)
return ret;
scale = 1. / (out - 1);
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
struct rgbvec *vec = &lut3d->lut[k * size2 + j * size + i];
float val[3];
NEXT_LINE(0);
if (av_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 int nearest_sample_index(float *data, float x, int low, int hi)
{
int mid;
if (x < data[low])
return low;
if (x > data[hi])
return hi;
for (;;) {
av_assert0(x >= data[low]);
av_assert0(x <= data[hi]);
av_assert0((hi-low) > 0);
if (hi - low == 1)
return low;
mid = (low + hi) / 2;
if (x < data[mid])
hi = mid;
else
low = mid;
}
return 0;
}
#define NEXT_FLOAT_OR_GOTO(value, label) \
if (!fget_next_word(line, sizeof(line) ,f)) { \
ret = AVERROR_INVALIDDATA; \
goto label; \
} \
if (av_sscanf(line, "%f", &value) != 1) { \
ret = AVERROR_INVALIDDATA; \
goto label; \
}
static int parse_cinespace(AVFilterContext *ctx, FILE *f)
{
LUT3DContext *lut3d = ctx->priv;
char line[MAX_LINE_SIZE];
float in_min[3] = {0.0, 0.0, 0.0};
float in_max[3] = {1.0, 1.0, 1.0};
float out_min[3] = {0.0, 0.0, 0.0};
float out_max[3] = {1.0, 1.0, 1.0};
int inside_metadata = 0, size, size2;
int prelut = 0;
int ret = 0;
int prelut_sizes[3] = {0, 0, 0};
float *in_prelut[3] = {NULL, NULL, NULL};
float *out_prelut[3] = {NULL, NULL, NULL};
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (strncmp(line, "CSPLUTV100", 10)) {
av_log(ctx, AV_LOG_ERROR, "Not cineSpace LUT format\n");
ret = AVERROR(EINVAL);
goto end;
}
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (strncmp(line, "3D", 2)) {
av_log(ctx, AV_LOG_ERROR, "Not 3D LUT format\n");
ret = AVERROR(EINVAL);
goto end;
}
while (1) {
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (!strncmp(line, "BEGIN METADATA", 14)) {
inside_metadata = 1;
continue;
}
if (!strncmp(line, "END METADATA", 12)) {
inside_metadata = 0;
continue;
}
if (inside_metadata == 0) {
int size_r, size_g, size_b;
for (int i = 0; i < 3; i++) {
int npoints = strtol(line, NULL, 0);
if (npoints > 2) {
float v,last;
if (npoints > PRELUT_SIZE) {
av_log(ctx, AV_LOG_ERROR, "Prelut size too large.\n");
ret = AVERROR_INVALIDDATA;
goto end;
}
if (in_prelut[i] || out_prelut[i]) {
av_log(ctx, AV_LOG_ERROR, "Invalid file has multiple preluts.\n");
ret = AVERROR_INVALIDDATA;
goto end;
}
in_prelut[i] = (float*)av_malloc(npoints * sizeof(float));
out_prelut[i] = (float*)av_malloc(npoints * sizeof(float));
if (!in_prelut[i] || !out_prelut[i]) {
ret = AVERROR(ENOMEM);
goto end;
}
prelut_sizes[i] = npoints;
in_min[i] = FLT_MAX;
in_max[i] = -FLT_MAX;
out_min[i] = FLT_MAX;
out_max[i] = -FLT_MAX;
for (int j = 0; j < npoints; j++) {
NEXT_FLOAT_OR_GOTO(v, end)
in_min[i] = FFMIN(in_min[i], v);
in_max[i] = FFMAX(in_max[i], v);
in_prelut[i][j] = v;
if (j > 0 && v < last) {
av_log(ctx, AV_LOG_ERROR, "Invalid file, non increasing prelut.\n");
ret = AVERROR(ENOMEM);
goto end;
}
last = v;
}
for (int j = 0; j < npoints; j++) {
NEXT_FLOAT_OR_GOTO(v, end)
out_min[i] = FFMIN(out_min[i], v);
out_max[i] = FFMAX(out_max[i], v);
out_prelut[i][j] = v;
}
} else if (npoints == 2) {
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (av_sscanf(line, "%f %f", &in_min[i], &in_max[i]) != 2) {
ret = AVERROR_INVALIDDATA;
goto end;
}
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (av_sscanf(line, "%f %f", &out_min[i], &out_max[i]) != 2) {
ret = AVERROR_INVALIDDATA;
goto end;
}
} else {
av_log(ctx, AV_LOG_ERROR, "Unsupported number of pre-lut points.\n");
ret = AVERROR_PATCHWELCOME;
goto end;
}
NEXT_LINE_OR_GOTO(skip_line(line), end);
}
if (av_sscanf(line, "%d %d %d", &size_r, &size_g, &size_b) != 3) {
ret = AVERROR(EINVAL);
goto end;
}
if (size_r != size_g || size_r != size_b) {
av_log(ctx, AV_LOG_ERROR, "Unsupported size combination: %dx%dx%d.\n", size_r, size_g, size_b);
ret = AVERROR_PATCHWELCOME;
goto end;
}
size = size_r;
size2 = size * size;
if (prelut_sizes[0] && prelut_sizes[1] && prelut_sizes[2])
prelut = 1;
ret = allocate_3dlut(ctx, size, prelut);
if (ret < 0)
return ret;
for (int k = 0; k < size; k++) {
for (int j = 0; j < size; j++) {
for (int i = 0; i < size; i++) {
struct rgbvec *vec = &lut3d->lut[i * size2 + j * size + k];
NEXT_LINE_OR_GOTO(skip_line(line), end);
if (av_sscanf(line, "%f %f %f", &vec->r, &vec->g, &vec->b) != 3) {
ret = AVERROR_INVALIDDATA;
goto end;
}
vec->r *= out_max[0] - out_min[0];
vec->g *= out_max[1] - out_min[1];
vec->b *= out_max[2] - out_min[2];
}
}
}
break;
}
}
if (prelut) {
for (int c = 0; c < 3; c++) {
lut3d->prelut.min[c] = in_min[c];
lut3d->prelut.max[c] = in_max[c];
lut3d->prelut.scale[c] = (1.0f / (float)(in_max[c] - in_min[c])) * (lut3d->prelut.size - 1);
for (int i = 0; i < lut3d->prelut.size; ++i) {
float mix = (float) i / (float)(lut3d->prelut.size - 1);
float x = lerpf(in_min[c], in_max[c], mix), a, b;
int idx = nearest_sample_index(in_prelut[c], x, 0, prelut_sizes[c]-1);
av_assert0(idx + 1 < prelut_sizes[c]);
a = out_prelut[c][idx + 0];
b = out_prelut[c][idx + 1];
mix = x - in_prelut[c][idx];
lut3d->prelut.lut[c][i] = sanitizef(lerpf(a, b, mix));
}
}
lut3d->scale.r = 1.00f;
lut3d->scale.g = 1.00f;
lut3d->scale.b = 1.00f;
} else {
lut3d->scale.r = av_clipf(1. / (in_max[0] - in_min[0]), 0.f, 1.f);
lut3d->scale.g = av_clipf(1. / (in_max[1] - in_min[1]), 0.f, 1.f);
lut3d->scale.b = av_clipf(1. / (in_max[2] - in_min[2]), 0.f, 1.f);
}
end:
for (int c = 0; c < 3; c++) {
av_freep(&in_prelut[c]);
av_freep(&out_prelut[c]);
}
return ret;
}
static int set_identity_matrix(AVFilterContext *ctx, int size)
{
LUT3DContext *lut3d = ctx->priv;
int ret, i, j, k;
const int size2 = size * size;
const float c = 1. / (size - 1);
ret = allocate_3dlut(ctx, size, 0);
if (ret < 0)
return ret;
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
struct rgbvec *vec = &lut3d->lut[k * size2 + j * size + i];
vec->r = k * c;
vec->g = j * c;
vec->b = i * c;
}
}
}
return 0;
}
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_GBRP, AV_PIX_FMT_GBRAP,
AV_PIX_FMT_GBRP9,
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_GBRP14,
AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
AV_PIX_FMT_NONE
};
return ff_set_common_formats_from_list(ctx, pix_fmts);
}
static int config_input(AVFilterLink *inlink)
{
int depth, is16bit, isfloat, planar;
LUT3DContext *lut3d = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
depth = desc->comp[0].depth;
is16bit = desc->comp[0].depth > 8;
planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
isfloat = desc->flags & AV_PIX_FMT_FLAG_FLOAT;
ff_fill_rgba_map(lut3d->rgba_map, inlink->format);
lut3d->step = av_get_padded_bits_per_pixel(desc) >> (3 + is16bit);
#define SET_FUNC(name) do { \
if (planar && !isfloat) { \
switch (depth) { \
case 8: lut3d->interp = interp_8_##name##_p8; break; \
case 9: lut3d->interp = interp_16_##name##_p9; break; \
case 10: lut3d->interp = interp_16_##name##_p10; break; \
case 12: lut3d->interp = interp_16_##name##_p12; break; \
case 14: lut3d->interp = interp_16_##name##_p14; break; \
case 16: lut3d->interp = interp_16_##name##_p16; break; \
} \
} else if (isfloat) { lut3d->interp = interp_##name##_pf32; \
} else if (is16bit) { lut3d->interp = interp_16_##name; \
} else { lut3d->interp = 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;
case INTERPOLATE_PYRAMID: SET_FUNC(pyramid); break;
case INTERPOLATE_PRISM: SET_FUNC(prism); break;
default:
av_assert0(0);
}
return 0;
}
static AVFrame *apply_lut(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
LUT3DContext *lut3d = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out;
ThreadData td;
if (av_frame_is_writable(in)) {
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);
}
td.in = in;
td.out = out;
ff_filter_execute(ctx, lut3d->interp, &td, NULL,
FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
if (out != in)
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);
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
return config_input(ctx->inputs[0]);
}
#if CONFIG_LUT3D_FILTER || CONFIG_HALDCLUT_FILTER
/* These options are shared between several filters;
* &lut3d_haldclut_options[COMMON_OPTIONS_OFFSET] must always
* point to the first of the COMMON_OPTIONS. */
#define COMMON_OPTIONS_OFFSET CONFIG_LUT3D_FILTER
static const AVOption lut3d_haldclut_options[] = {
#if CONFIG_LUT3D_FILTER
{ "file", "set 3D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
#endif
COMMON_OPTIONS
};
#if CONFIG_LUT3D_FILTER
AVFILTER_DEFINE_CLASS_EXT(lut3d, "lut3d", lut3d_haldclut_options);
static av_cold int lut3d_init(AVFilterContext *ctx)
{
int ret;
FILE *f;
const char *ext;
LUT3DContext *lut3d = ctx->priv;
lut3d->scale.r = lut3d->scale.g = lut3d->scale.b = 1.f;
if (!lut3d->file) {
return set_identity_matrix(ctx, 32);
}
f = av_fopen_utf8(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")) {
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 if (!av_strcasecmp(ext, "csp")) {
ret = parse_cinespace(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 av_cold void lut3d_uninit(AVFilterContext *ctx)
{
LUT3DContext *lut3d = ctx->priv;
int i;
av_freep(&lut3d->lut);
for (i = 0; i < 3; i++) {
av_freep(&lut3d->prelut.lut[i]);
}
}
static const AVFilterPad lut3d_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
};
static const AVFilterPad lut3d_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_lut3d = {
.name = "lut3d",
.description = NULL_IF_CONFIG_SMALL("Adjust colors using a 3D LUT."),
.priv_size = sizeof(LUT3DContext),
.init = lut3d_init,
.uninit = lut3d_uninit,
FILTER_INPUTS(lut3d_inputs),
FILTER_OUTPUTS(lut3d_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &lut3d_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};
#endif
#if CONFIG_HALDCLUT_FILTER
static void update_clut_packed(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;
const int level2 = lut3d->lutsize2;
#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[i * level2 + j * level + k]; \
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)
switch (lut3d->clut_bits) {
case 8: LOAD_CLUT(8); break;
case 16: LOAD_CLUT(16); break;
}
}
static void update_clut_planar(LUT3DContext *lut3d, const AVFrame *frame)
{
const uint8_t *datag = frame->data[0];
const uint8_t *datab = frame->data[1];
const uint8_t *datar = frame->data[2];
const int glinesize = frame->linesize[0];
const int blinesize = frame->linesize[1];
const int rlinesize = frame->linesize[2];
const int w = lut3d->clut_width;
const int level = lut3d->lutsize;
const int level2 = lut3d->lutsize2;
#define LOAD_CLUT_PLANAR(nbits, depth) 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 *gsrc = (const uint##nbits##_t *) \
(datag + y*glinesize); \
const uint##nbits##_t *bsrc = (const uint##nbits##_t *) \
(datab + y*blinesize); \
const uint##nbits##_t *rsrc = (const uint##nbits##_t *) \
(datar + y*rlinesize); \
struct rgbvec *vec = &lut3d->lut[i * level2 + j * level + k]; \
vec->r = gsrc[x] / (float)((1<<(depth)) - 1); \
vec->g = bsrc[x] / (float)((1<<(depth)) - 1); \
vec->b = rsrc[x] / (float)((1<<(depth)) - 1); \
if (++x == w) { \
x = 0; \
y++; \
} \
} \
} \
} \
} while (0)
switch (lut3d->clut_bits) {
case 8: LOAD_CLUT_PLANAR(8, 8); break;
case 9: LOAD_CLUT_PLANAR(16, 9); break;
case 10: LOAD_CLUT_PLANAR(16, 10); break;
case 12: LOAD_CLUT_PLANAR(16, 12); break;
case 14: LOAD_CLUT_PLANAR(16, 14); break;
case 16: LOAD_CLUT_PLANAR(16, 16); break;
}
}
static void update_clut_float(LUT3DContext *lut3d, const AVFrame *frame)
{
const uint8_t *datag = frame->data[0];
const uint8_t *datab = frame->data[1];
const uint8_t *datar = frame->data[2];
const int glinesize = frame->linesize[0];
const int blinesize = frame->linesize[1];
const int rlinesize = frame->linesize[2];
const int w = lut3d->clut_width;
const int level = lut3d->lutsize;
const int level2 = lut3d->lutsize2;
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 float *gsrc = (const float *)(datag + y*glinesize);
const float *bsrc = (const float *)(datab + y*blinesize);
const float *rsrc = (const float *)(datar + y*rlinesize);
struct rgbvec *vec = &lut3d->lut[i * level2 + j * level + k];
vec->r = rsrc[x];
vec->g = gsrc[x];
vec->b = bsrc[x];
if (++x == w) {
x = 0;
y++;
}
}
}
}
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
LUT3DContext *lut3d = ctx->priv;
int ret;
ret = ff_framesync_init_dualinput(&lut3d->fs, ctx);
if (ret < 0)
return ret;
outlink->w = ctx->inputs[0]->w;
outlink->h = ctx->inputs[0]->h;
outlink->time_base = ctx->inputs[0]->time_base;
if ((ret = ff_framesync_configure(&lut3d->fs)) < 0)
return ret;
return 0;
}
static int activate(AVFilterContext *ctx)
{
LUT3DContext *s = ctx->priv;
return ff_framesync_activate(&s->fs);
}
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);
av_assert0(desc);
lut3d->clut_bits = desc->comp[0].depth;
lut3d->clut_planar = av_pix_fmt_count_planes(inlink->format) > 1;
lut3d->clut_float = desc->flags & AV_PIX_FMT_FLAG_FLOAT;
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);
}
return allocate_3dlut(ctx, level, 0);
}
static int update_apply_clut(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
LUT3DContext *lut3d = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
AVFrame *master, *second, *out;
int ret;
ret = ff_framesync_dualinput_get(fs, &master, &second);
if (ret < 0)
return ret;
if (!second)
return ff_filter_frame(ctx->outputs[0], master);
if (lut3d->clut_float)
update_clut_float(ctx->priv, second);
else if (lut3d->clut_planar)
update_clut_planar(ctx->priv, second);
else
update_clut_packed(ctx->priv, second);
out = apply_lut(inlink, master);
return ff_filter_frame(ctx->outputs[0], out);
}
static av_cold int haldclut_init(AVFilterContext *ctx)
{
LUT3DContext *lut3d = ctx->priv;
lut3d->scale.r = lut3d->scale.g = lut3d->scale.b = 1.f;
lut3d->fs.on_event = update_apply_clut;
return 0;
}
static av_cold void haldclut_uninit(AVFilterContext *ctx)
{
LUT3DContext *lut3d = ctx->priv;
ff_framesync_uninit(&lut3d->fs);
av_freep(&lut3d->lut);
}
FRAMESYNC_DEFINE_CLASS_EXT(haldclut, LUT3DContext, fs,
&lut3d_haldclut_options[COMMON_OPTIONS_OFFSET]);
static const AVFilterPad haldclut_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
},{
.name = "clut",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_clut,
},
};
static const AVFilterPad haldclut_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
const AVFilter ff_vf_haldclut = {
.name = "haldclut",
.description = NULL_IF_CONFIG_SMALL("Adjust colors using a Hald CLUT."),
.priv_size = sizeof(LUT3DContext),
.preinit = haldclut_framesync_preinit,
.init = haldclut_init,
.uninit = haldclut_uninit,
.activate = activate,
FILTER_INPUTS(haldclut_inputs),
FILTER_OUTPUTS(haldclut_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &haldclut_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};
#endif
#endif /* CONFIG_LUT3D_FILTER || CONFIG_HALDCLUT_FILTER */
#if CONFIG_LUT1D_FILTER
enum interp_1d_mode {
INTERPOLATE_1D_NEAREST,
INTERPOLATE_1D_LINEAR,
INTERPOLATE_1D_CUBIC,
INTERPOLATE_1D_COSINE,
INTERPOLATE_1D_SPLINE,
NB_INTERP_1D_MODE
};
#define MAX_1D_LEVEL 65536
typedef struct LUT1DContext {
const AVClass *class;
char *file;
int interpolation; ///<interp_1d_mode
struct rgbvec scale;
uint8_t rgba_map[4];
int step;
float lut[3][MAX_1D_LEVEL];
int lutsize;
avfilter_action_func *interp;
} LUT1DContext;
#undef OFFSET
#define OFFSET(x) offsetof(LUT1DContext, x)
static void set_identity_matrix_1d(LUT1DContext *lut1d, int size)
{
const float c = 1. / (size - 1);
int i;
lut1d->lutsize = size;
for (i = 0; i < size; i++) {
lut1d->lut[0][i] = i * c;
lut1d->lut[1][i] = i * c;
lut1d->lut[2][i] = i * c;
}
}
static int parse_cinespace_1d(AVFilterContext *ctx, FILE *f)
{
LUT1DContext *lut1d = ctx->priv;
char line[MAX_LINE_SIZE];
float in_min[3] = {0.0, 0.0, 0.0};
float in_max[3] = {1.0, 1.0, 1.0};
float out_min[3] = {0.0, 0.0, 0.0};
float out_max[3] = {1.0, 1.0, 1.0};
int inside_metadata = 0, size;
NEXT_LINE(skip_line(line));
if (strncmp(line, "CSPLUTV100", 10)) {
av_log(ctx, AV_LOG_ERROR, "Not cineSpace LUT format\n");
return AVERROR(EINVAL);
}
NEXT_LINE(skip_line(line));
if (strncmp(line, "1D", 2)) {
av_log(ctx, AV_LOG_ERROR, "Not 1D LUT format\n");
return AVERROR(EINVAL);
}
while (1) {
NEXT_LINE(skip_line(line));
if (!strncmp(line, "BEGIN METADATA", 14)) {
inside_metadata = 1;
continue;
}
if (!strncmp(line, "END METADATA", 12)) {
inside_metadata = 0;
continue;
}
if (inside_metadata == 0) {
for (int i = 0; i < 3; i++) {
int npoints = strtol(line, NULL, 0);
if (npoints != 2) {
av_log(ctx, AV_LOG_ERROR, "Unsupported number of pre-lut points.\n");
return AVERROR_PATCHWELCOME;
}
NEXT_LINE(skip_line(line));
if (av_sscanf(line, "%f %f", &in_min[i], &in_max[i]) != 2)
return AVERROR_INVALIDDATA;
NEXT_LINE(skip_line(line));
if (av_sscanf(line, "%f %f", &out_min[i], &out_max[i]) != 2)
return AVERROR_INVALIDDATA;
NEXT_LINE(skip_line(line));
}
size = strtol(line, NULL, 0);
if (size < 2 || size > MAX_1D_LEVEL) {
av_log(ctx, AV_LOG_ERROR, "Too large or invalid 1D LUT size\n");
return AVERROR(EINVAL);
}
lut1d->lutsize = size;
for (int i = 0; i < size; i++) {
NEXT_LINE(skip_line(line));
if (av_sscanf(line, "%f %f %f", &lut1d->lut[0][i], &lut1d->lut[1][i], &lut1d->lut[2][i]) != 3)
return AVERROR_INVALIDDATA;
lut1d->lut[0][i] *= out_max[0] - out_min[0];
lut1d->lut[1][i] *= out_max[1] - out_min[1];
lut1d->lut[2][i] *= out_max[2] - out_min[2];
}
break;
}
}
lut1d->scale.r = av_clipf(1. / (in_max[0] - in_min[0]), 0.f, 1.f);
lut1d->scale.g = av_clipf(1. / (in_max[1] - in_min[1]), 0.f, 1.f);
lut1d->scale.b = av_clipf(1. / (in_max[2] - in_min[2]), 0.f, 1.f);
return 0;
}
static int parse_cube_1d(AVFilterContext *ctx, FILE *f)
{
LUT1DContext *lut1d = ctx->priv;
char line[MAX_LINE_SIZE];
float min[3] = {0.0, 0.0, 0.0};
float max[3] = {1.0, 1.0, 1.0};
while (fgets(line, sizeof(line), f)) {
if (!strncmp(line, "LUT_1D_SIZE", 11)) {
const int size = strtol(line + 12, NULL, 0);
int i;
if (size < 2 || size > MAX_1D_LEVEL) {
av_log(ctx, AV_LOG_ERROR, "Too large or invalid 1D LUT size\n");
return AVERROR(EINVAL);
}
lut1d->lutsize = size;
for (i = 0; i < size; i++) {
do {
try_again:
NEXT_LINE(0);
if (!strncmp(line, "DOMAIN_", 7)) {
float *vals = NULL;
if (!strncmp(line + 7, "MIN ", 4)) vals = min;
else if (!strncmp(line + 7, "MAX ", 4)) vals = max;
if (!vals)
return AVERROR_INVALIDDATA;
av_sscanf(line + 11, "%f %f %f", vals, vals + 1, vals + 2);
av_log(ctx, AV_LOG_DEBUG, "min: %f %f %f | max: %f %f %f\n",
min[0], min[1], min[2], max[0], max[1], max[2]);
goto try_again;
} else if (!strncmp(line, "LUT_1D_INPUT_RANGE ", 19)) {
av_sscanf(line + 19, "%f %f", min, max);
min[1] = min[2] = min[0];
max[1] = max[2] = max[0];
goto try_again;
} else if (!strncmp(line, "TITLE", 5)) {
goto try_again;
}
} while (skip_line(line));
if (av_sscanf(line, "%f %f %f", &lut1d->lut[0][i], &lut1d->lut[1][i], &lut1d->lut[2][i]) != 3)
return AVERROR_INVALIDDATA;
}
break;
}
}
lut1d->scale.r = av_clipf(1. / (max[0] - min[0]), 0.f, 1.f);
lut1d->scale.g = av_clipf(1. / (max[1] - min[1]), 0.f, 1.f);
lut1d->scale.b = av_clipf(1. / (max[2] - min[2]), 0.f, 1.f);
return 0;
}
static const AVOption lut1d_options[] = {
{ "file", "set 1D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = TFLAGS },
{ "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_1D_LINEAR}, 0, NB_INTERP_1D_MODE-1, TFLAGS, "interp_mode" },
{ "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_NEAREST}, 0, 0, TFLAGS, "interp_mode" },
{ "linear", "use values from the linear interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_LINEAR}, 0, 0, TFLAGS, "interp_mode" },
{ "cosine", "use values from the cosine interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_COSINE}, 0, 0, TFLAGS, "interp_mode" },
{ "cubic", "use values from the cubic interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_CUBIC}, 0, 0, TFLAGS, "interp_mode" },
{ "spline", "use values from the spline interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_SPLINE}, 0, 0, TFLAGS, "interp_mode" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(lut1d);
static inline float interp_1d_nearest(const LUT1DContext *lut1d,
int idx, const float s)
{
return lut1d->lut[idx][NEAR(s)];
}
#define NEXT1D(x) (FFMIN((int)(x) + 1, lut1d->lutsize - 1))
static inline float interp_1d_linear(const LUT1DContext *lut1d,
int idx, const float s)
{
const int prev = PREV(s);
const int next = NEXT1D(s);
const float d = s - prev;
const float p = lut1d->lut[idx][prev];
const float n = lut1d->lut[idx][next];
return lerpf(p, n, d);
}
static inline float interp_1d_cosine(const LUT1DContext *lut1d,
int idx, const float s)
{
const int prev = PREV(s);
const int next = NEXT1D(s);
const float d = s - prev;
const float p = lut1d->lut[idx][prev];
const float n = lut1d->lut[idx][next];
const float m = (1.f - cosf(d * M_PI)) * .5f;
return lerpf(p, n, m);
}
static inline float interp_1d_cubic(const LUT1DContext *lut1d,
int idx, const float s)
{
const int prev = PREV(s);
const int next = NEXT1D(s);
const float mu = s - prev;
float a0, a1, a2, a3, mu2;
float y0 = lut1d->lut[idx][FFMAX(prev - 1, 0)];
float y1 = lut1d->lut[idx][prev];
float y2 = lut1d->lut[idx][next];
float y3 = lut1d->lut[idx][FFMIN(next + 1, lut1d->lutsize - 1)];
mu2 = mu * mu;
a0 = y3 - y2 - y0 + y1;
a1 = y0 - y1 - a0;
a2 = y2 - y0;
a3 = y1;
return a0 * mu * mu2 + a1 * mu2 + a2 * mu + a3;
}
static inline float interp_1d_spline(const LUT1DContext *lut1d,
int idx, const float s)
{
const int prev = PREV(s);
const int next = NEXT1D(s);
const float x = s - prev;
float c0, c1, c2, c3;
float y0 = lut1d->lut[idx][FFMAX(prev - 1, 0)];
float y1 = lut1d->lut[idx][prev];
float y2 = lut1d->lut[idx][next];
float y3 = lut1d->lut[idx][FFMIN(next + 1, lut1d->lutsize - 1)];
c0 = y1;
c1 = .5f * (y2 - y0);
c2 = y0 - 2.5f * y1 + 2.f * y2 - .5f * y3;
c3 = .5f * (y3 - y0) + 1.5f * (y1 - y2);
return ((c3 * x + c2) * x + c1) * x + c0;
}
#define DEFINE_INTERP_FUNC_PLANAR_1D(name, nbits, depth) \
static int interp_1d_##nbits##_##name##_p##depth(AVFilterContext *ctx, \
void *arg, int jobnr, \
int nb_jobs) \
{ \
int x, y; \
const LUT1DContext *lut1d = ctx->priv; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *grow = out->data[0] + slice_start * out->linesize[0]; \
uint8_t *brow = out->data[1] + slice_start * out->linesize[1]; \
uint8_t *rrow = out->data[2] + slice_start * out->linesize[2]; \
uint8_t *arow = out->data[3] + slice_start * out->linesize[3]; \
const uint8_t *srcgrow = in->data[0] + slice_start * in->linesize[0]; \
const uint8_t *srcbrow = in->data[1] + slice_start * in->linesize[1]; \
const uint8_t *srcrrow = in->data[2] + slice_start * in->linesize[2]; \
const uint8_t *srcarow = in->data[3] + slice_start * in->linesize[3]; \
const float factor = (1 << depth) - 1; \
const float scale_r = (lut1d->scale.r / factor) * (lut1d->lutsize - 1); \
const float scale_g = (lut1d->scale.g / factor) * (lut1d->lutsize - 1); \
const float scale_b = (lut1d->scale.b / factor) * (lut1d->lutsize - 1); \
\
for (y = slice_start; y < slice_end; y++) { \
uint##nbits##_t *dstg = (uint##nbits##_t *)grow; \
uint##nbits##_t *dstb = (uint##nbits##_t *)brow; \
uint##nbits##_t *dstr = (uint##nbits##_t *)rrow; \
uint##nbits##_t *dsta = (uint##nbits##_t *)arow; \
const uint##nbits##_t *srcg = (const uint##nbits##_t *)srcgrow; \
const uint##nbits##_t *srcb = (const uint##nbits##_t *)srcbrow; \
const uint##nbits##_t *srcr = (const uint##nbits##_t *)srcrrow; \
const uint##nbits##_t *srca = (const uint##nbits##_t *)srcarow; \
for (x = 0; x < in->width; x++) { \
float r = srcr[x] * scale_r; \
float g = srcg[x] * scale_g; \
float b = srcb[x] * scale_b; \
r = interp_1d_##name(lut1d, 0, r); \
g = interp_1d_##name(lut1d, 1, g); \
b = interp_1d_##name(lut1d, 2, b); \
dstr[x] = av_clip_uintp2(r * factor, depth); \
dstg[x] = av_clip_uintp2(g * factor, depth); \
dstb[x] = av_clip_uintp2(b * factor, depth); \
if (!direct && in->linesize[3]) \
dsta[x] = srca[x]; \
} \
grow += out->linesize[0]; \
brow += out->linesize[1]; \
rrow += out->linesize[2]; \
arow += out->linesize[3]; \
srcgrow += in->linesize[0]; \
srcbrow += in->linesize[1]; \
srcrrow += in->linesize[2]; \
srcarow += in->linesize[3]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 8, 8)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 8, 8)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 8, 8)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 8, 8)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 8, 8)
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 16, 9)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 16, 9)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 16, 9)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 16, 9)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 16, 9)
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 16, 10)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 16, 10)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 16, 10)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 16, 10)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 16, 10)
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 16, 12)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 16, 12)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 16, 12)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 16, 12)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 16, 12)
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 16, 14)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 16, 14)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 16, 14)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 16, 14)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 16, 14)
DEFINE_INTERP_FUNC_PLANAR_1D(nearest, 16, 16)
DEFINE_INTERP_FUNC_PLANAR_1D(linear, 16, 16)
DEFINE_INTERP_FUNC_PLANAR_1D(cosine, 16, 16)
DEFINE_INTERP_FUNC_PLANAR_1D(cubic, 16, 16)
DEFINE_INTERP_FUNC_PLANAR_1D(spline, 16, 16)
#define DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(name, depth) \
static int interp_1d_##name##_pf##depth(AVFilterContext *ctx, \
void *arg, int jobnr, \
int nb_jobs) \
{ \
int x, y; \
const LUT1DContext *lut1d = ctx->priv; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *grow = out->data[0] + slice_start * out->linesize[0]; \
uint8_t *brow = out->data[1] + slice_start * out->linesize[1]; \
uint8_t *rrow = out->data[2] + slice_start * out->linesize[2]; \
uint8_t *arow = out->data[3] + slice_start * out->linesize[3]; \
const uint8_t *srcgrow = in->data[0] + slice_start * in->linesize[0]; \
const uint8_t *srcbrow = in->data[1] + slice_start * in->linesize[1]; \
const uint8_t *srcrrow = in->data[2] + slice_start * in->linesize[2]; \
const uint8_t *srcarow = in->data[3] + slice_start * in->linesize[3]; \
const float lutsize = lut1d->lutsize - 1; \
const float scale_r = lut1d->scale.r * lutsize; \
const float scale_g = lut1d->scale.g * lutsize; \
const float scale_b = lut1d->scale.b * lutsize; \
\
for (y = slice_start; y < slice_end; y++) { \
float *dstg = (float *)grow; \
float *dstb = (float *)brow; \
float *dstr = (float *)rrow; \
float *dsta = (float *)arow; \
const float *srcg = (const float *)srcgrow; \
const float *srcb = (const float *)srcbrow; \
const float *srcr = (const float *)srcrrow; \
const float *srca = (const float *)srcarow; \
for (x = 0; x < in->width; x++) { \
float r = av_clipf(sanitizef(srcr[x]) * scale_r, 0.0f, lutsize); \
float g = av_clipf(sanitizef(srcg[x]) * scale_g, 0.0f, lutsize); \
float b = av_clipf(sanitizef(srcb[x]) * scale_b, 0.0f, lutsize); \
r = interp_1d_##name(lut1d, 0, r); \
g = interp_1d_##name(lut1d, 1, g); \
b = interp_1d_##name(lut1d, 2, b); \
dstr[x] = r; \
dstg[x] = g; \
dstb[x] = b; \
if (!direct && in->linesize[3]) \
dsta[x] = srca[x]; \
} \
grow += out->linesize[0]; \
brow += out->linesize[1]; \
rrow += out->linesize[2]; \
arow += out->linesize[3]; \
srcgrow += in->linesize[0]; \
srcbrow += in->linesize[1]; \
srcrrow += in->linesize[2]; \
srcarow += in->linesize[3]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(nearest, 32)
DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(linear, 32)
DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(cosine, 32)
DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(cubic, 32)
DEFINE_INTERP_FUNC_PLANAR_1D_FLOAT(spline, 32)
#define DEFINE_INTERP_FUNC_1D(name, nbits) \
static int interp_1d_##nbits##_##name(AVFilterContext *ctx, void *arg, \
int jobnr, int nb_jobs) \
{ \
int x, y; \
const LUT1DContext *lut1d = ctx->priv; \
const ThreadData *td = arg; \
const AVFrame *in = td->in; \
const AVFrame *out = td->out; \
const int direct = out == in; \
const int step = lut1d->step; \
const uint8_t r = lut1d->rgba_map[R]; \
const uint8_t g = lut1d->rgba_map[G]; \
const uint8_t b = lut1d->rgba_map[B]; \
const uint8_t a = lut1d->rgba_map[A]; \
const int slice_start = (in->height * jobnr ) / nb_jobs; \
const int slice_end = (in->height * (jobnr+1)) / nb_jobs; \
uint8_t *dstrow = out->data[0] + slice_start * out->linesize[0]; \
const uint8_t *srcrow = in ->data[0] + slice_start * in ->linesize[0]; \
const float factor = (1 << nbits) - 1; \
const float scale_r = (lut1d->scale.r / factor) * (lut1d->lutsize - 1); \
const float scale_g = (lut1d->scale.g / factor) * (lut1d->lutsize - 1); \
const float scale_b = (lut1d->scale.b / factor) * (lut1d->lutsize - 1); \
\
for (y = slice_start; y < slice_end; y++) { \
uint##nbits##_t *dst = (uint##nbits##_t *)dstrow; \
const uint##nbits##_t *src = (const uint##nbits##_t *)srcrow; \
for (x = 0; x < in->width * step; x += step) { \
float rr = src[x + r] * scale_r; \
float gg = src[x + g] * scale_g; \
float bb = src[x + b] * scale_b; \
rr = interp_1d_##name(lut1d, 0, rr); \
gg = interp_1d_##name(lut1d, 1, gg); \
bb = interp_1d_##name(lut1d, 2, bb); \
dst[x + r] = av_clip_uint##nbits(rr * factor); \
dst[x + g] = av_clip_uint##nbits(gg * factor); \
dst[x + b] = av_clip_uint##nbits(bb * factor); \
if (!direct && step == 4) \
dst[x + a] = src[x + a]; \
} \
dstrow += out->linesize[0]; \
srcrow += in ->linesize[0]; \
} \
return 0; \
}
DEFINE_INTERP_FUNC_1D(nearest, 8)
DEFINE_INTERP_FUNC_1D(linear, 8)
DEFINE_INTERP_FUNC_1D(cosine, 8)
DEFINE_INTERP_FUNC_1D(cubic, 8)
DEFINE_INTERP_FUNC_1D(spline, 8)
DEFINE_INTERP_FUNC_1D(nearest, 16)
DEFINE_INTERP_FUNC_1D(linear, 16)
DEFINE_INTERP_FUNC_1D(cosine, 16)
DEFINE_INTERP_FUNC_1D(cubic, 16)
DEFINE_INTERP_FUNC_1D(spline, 16)
static int config_input_1d(AVFilterLink *inlink)
{
int depth, is16bit, isfloat, planar;
LUT1DContext *lut1d = inlink->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
depth = desc->comp[0].depth;
is16bit = desc->comp[0].depth > 8;
planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
isfloat = desc->flags & AV_PIX_FMT_FLAG_FLOAT;
ff_fill_rgba_map(lut1d->rgba_map, inlink->format);
lut1d->step = av_get_padded_bits_per_pixel(desc) >> (3 + is16bit);
#define SET_FUNC_1D(name) do { \
if (planar && !isfloat) { \
switch (depth) { \
case 8: lut1d->interp = interp_1d_8_##name##_p8; break; \
case 9: lut1d->interp = interp_1d_16_##name##_p9; break; \
case 10: lut1d->interp = interp_1d_16_##name##_p10; break; \
case 12: lut1d->interp = interp_1d_16_##name##_p12; break; \
case 14: lut1d->interp = interp_1d_16_##name##_p14; break; \
case 16: lut1d->interp = interp_1d_16_##name##_p16; break; \
} \
} else if (isfloat) { lut1d->interp = interp_1d_##name##_pf32; \
} else if (is16bit) { lut1d->interp = interp_1d_16_##name; \
} else { lut1d->interp = interp_1d_8_##name; } \
} while (0)
switch (lut1d->interpolation) {
case INTERPOLATE_1D_NEAREST: SET_FUNC_1D(nearest); break;
case INTERPOLATE_1D_LINEAR: SET_FUNC_1D(linear); break;
case INTERPOLATE_1D_COSINE: SET_FUNC_1D(cosine); break;
case INTERPOLATE_1D_CUBIC: SET_FUNC_1D(cubic); break;
case INTERPOLATE_1D_SPLINE: SET_FUNC_1D(spline); break;
default:
av_assert0(0);
}
return 0;
}
static av_cold int lut1d_init(AVFilterContext *ctx)
{
int ret;
FILE *f;
const char *ext;
LUT1DContext *lut1d = ctx->priv;
lut1d->scale.r = lut1d->scale.g = lut1d->scale.b = 1.f;
if (!lut1d->file) {
set_identity_matrix_1d(lut1d, 32);
return 0;
}
f = av_fopen_utf8(lut1d->file, "r");
if (!f) {
ret = AVERROR(errno);
av_log(ctx, AV_LOG_ERROR, "%s: %s\n", lut1d->file, av_err2str(ret));
return ret;
}
ext = strrchr(lut1d->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, "cube") || !av_strcasecmp(ext, "1dlut")) {
ret = parse_cube_1d(ctx, f);
} else if (!av_strcasecmp(ext, "csp")) {
ret = parse_cinespace_1d(ctx, f);
} else {
av_log(ctx, AV_LOG_ERROR, "Unrecognized '.%s' file type\n", ext);
ret = AVERROR(EINVAL);
}
if (!ret && !lut1d->lutsize) {
av_log(ctx, AV_LOG_ERROR, "1D LUT is empty\n");
ret = AVERROR_INVALIDDATA;
}
end:
fclose(f);
return ret;
}
static AVFrame *apply_1d_lut(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
LUT1DContext *lut1d = ctx->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out;
ThreadData td;
if (av_frame_is_writable(in)) {
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);
}
td.in = in;
td.out = out;
ff_filter_execute(ctx, lut1d->interp, &td, NULL,
FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
if (out != in)
av_frame_free(&in);
return out;
}
static int filter_frame_1d(AVFilterLink *inlink, AVFrame *in)
{
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out = apply_1d_lut(inlink, in);
if (!out)
return AVERROR(ENOMEM);
return ff_filter_frame(outlink, out);
}
static int lut1d_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
LUT1DContext *lut1d = ctx->priv;
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
ret = lut1d_init(ctx);
if (ret < 0) {
set_identity_matrix_1d(lut1d, 32);
return ret;
}
return config_input_1d(ctx->inputs[0]);
}
static const AVFilterPad lut1d_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_1d,
.config_props = config_input_1d,
},
};
static const AVFilterPad lut1d_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
};
const AVFilter ff_vf_lut1d = {
.name = "lut1d",
.description = NULL_IF_CONFIG_SMALL("Adjust colors using a 1D LUT."),
.priv_size = sizeof(LUT1DContext),
.init = lut1d_init,
FILTER_INPUTS(lut1d_inputs),
FILTER_OUTPUTS(lut1d_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &lut1d_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = lut1d_process_command,
};
#endif
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