mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
553 lines
18 KiB
C
553 lines
18 KiB
C
/*
|
|
* Copyright (c) 2013 Clément Bœsch
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/bprint.h"
|
|
#include "libavutil/eval.h"
|
|
#include "libavutil/file.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avfilter.h"
|
|
#include "drawutils.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
#define R 0
|
|
#define G 1
|
|
#define B 2
|
|
#define A 3
|
|
|
|
struct keypoint {
|
|
double x, y;
|
|
struct keypoint *next;
|
|
};
|
|
|
|
#define NB_COMP 3
|
|
|
|
enum preset {
|
|
PRESET_NONE,
|
|
PRESET_COLOR_NEGATIVE,
|
|
PRESET_CROSS_PROCESS,
|
|
PRESET_DARKER,
|
|
PRESET_INCREASE_CONTRAST,
|
|
PRESET_LIGHTER,
|
|
PRESET_LINEAR_CONTRAST,
|
|
PRESET_MEDIUM_CONTRAST,
|
|
PRESET_NEGATIVE,
|
|
PRESET_STRONG_CONTRAST,
|
|
PRESET_VINTAGE,
|
|
NB_PRESETS,
|
|
};
|
|
|
|
typedef struct {
|
|
const AVClass *class;
|
|
enum preset preset;
|
|
char *comp_points_str[NB_COMP + 1];
|
|
char *comp_points_str_all;
|
|
uint8_t graph[NB_COMP + 1][256];
|
|
char *psfile;
|
|
uint8_t rgba_map[4];
|
|
int step;
|
|
} CurvesContext;
|
|
|
|
#define OFFSET(x) offsetof(CurvesContext, x)
|
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
|
static const AVOption curves_options[] = {
|
|
{ "preset", "select a color curves preset", OFFSET(preset), AV_OPT_TYPE_INT, {.i64=PRESET_NONE}, PRESET_NONE, NB_PRESETS-1, FLAGS, "preset_name" },
|
|
{ "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_NONE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "color_negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_COLOR_NEGATIVE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "cross_process", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_CROSS_PROCESS}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "darker", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_DARKER}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "increase_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_INCREASE_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "lighter", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LIGHTER}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "linear_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_LINEAR_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "medium_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_MEDIUM_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "negative", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_NEGATIVE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "strong_contrast", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_STRONG_CONTRAST}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "vintage", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PRESET_VINTAGE}, INT_MIN, INT_MAX, FLAGS, "preset_name" },
|
|
{ "master","set master points coordinates",OFFSET(comp_points_str[NB_COMP]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "m", "set master points coordinates",OFFSET(comp_points_str[NB_COMP]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "red", "set red points coordinates", OFFSET(comp_points_str[0]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "r", "set red points coordinates", OFFSET(comp_points_str[0]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "green", "set green points coordinates", OFFSET(comp_points_str[1]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "g", "set green points coordinates", OFFSET(comp_points_str[1]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "blue", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "b", "set blue points coordinates", OFFSET(comp_points_str[2]), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "all", "set points coordinates for all components", OFFSET(comp_points_str_all), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ "psfile", "set Photoshop curves file name", OFFSET(psfile), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(curves);
|
|
|
|
static const struct {
|
|
const char *r;
|
|
const char *g;
|
|
const char *b;
|
|
const char *master;
|
|
} curves_presets[] = {
|
|
[PRESET_COLOR_NEGATIVE] = {
|
|
"0/1 0.129/1 0.466/0.498 0.725/0 1/0",
|
|
"0/1 0.109/1 0.301/0.498 0.517/0 1/0",
|
|
"0/1 0.098/1 0.235/0.498 0.423/0 1/0",
|
|
},
|
|
[PRESET_CROSS_PROCESS] = {
|
|
"0.25/0.156 0.501/0.501 0.686/0.745",
|
|
"0.25/0.188 0.38/0.501 0.745/0.815 1/0.815",
|
|
"0.231/0.094 0.709/0.874",
|
|
},
|
|
[PRESET_DARKER] = { .master = "0.5/0.4" },
|
|
[PRESET_INCREASE_CONTRAST] = { .master = "0.149/0.066 0.831/0.905 0.905/0.98" },
|
|
[PRESET_LIGHTER] = { .master = "0.4/0.5" },
|
|
[PRESET_LINEAR_CONTRAST] = { .master = "0.305/0.286 0.694/0.713" },
|
|
[PRESET_MEDIUM_CONTRAST] = { .master = "0.286/0.219 0.639/0.643" },
|
|
[PRESET_NEGATIVE] = { .master = "0/1 1/0" },
|
|
[PRESET_STRONG_CONTRAST] = { .master = "0.301/0.196 0.592/0.6 0.686/0.737" },
|
|
[PRESET_VINTAGE] = {
|
|
"0/0.11 0.42/0.51 1/0.95",
|
|
"0.50/0.48",
|
|
"0/0.22 0.49/0.44 1/0.8",
|
|
}
|
|
};
|
|
|
|
static struct keypoint *make_point(double x, double y, struct keypoint *next)
|
|
{
|
|
struct keypoint *point = av_mallocz(sizeof(*point));
|
|
|
|
if (!point)
|
|
return NULL;
|
|
point->x = x;
|
|
point->y = y;
|
|
point->next = next;
|
|
return point;
|
|
}
|
|
|
|
static int parse_points_str(AVFilterContext *ctx, struct keypoint **points, const char *s)
|
|
{
|
|
char *p = (char *)s; // strtod won't alter the string
|
|
struct keypoint *last = NULL;
|
|
|
|
/* construct a linked list based on the key points string */
|
|
while (p && *p) {
|
|
struct keypoint *point = make_point(0, 0, NULL);
|
|
if (!point)
|
|
return AVERROR(ENOMEM);
|
|
point->x = av_strtod(p, &p); if (p && *p) p++;
|
|
point->y = av_strtod(p, &p); if (p && *p) p++;
|
|
if (point->x < 0 || point->x > 1 || point->y < 0 || point->y > 1) {
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid key point coordinates (%f;%f), "
|
|
"x and y must be in the [0;1] range.\n", point->x, point->y);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!*points)
|
|
*points = point;
|
|
if (last) {
|
|
if ((int)(last->x * 255) >= (int)(point->x * 255)) {
|
|
av_log(ctx, AV_LOG_ERROR, "Key point coordinates (%f;%f) "
|
|
"and (%f;%f) are too close from each other or not "
|
|
"strictly increasing on the x-axis\n",
|
|
last->x, last->y, point->x, point->y);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
last->next = point;
|
|
}
|
|
last = point;
|
|
}
|
|
|
|
/* auto insert first key point if missing at x=0 */
|
|
if (!*points) {
|
|
last = make_point(0, 0, NULL);
|
|
if (!last)
|
|
return AVERROR(ENOMEM);
|
|
last->x = last->y = 0;
|
|
*points = last;
|
|
} else if ((*points)->x != 0.) {
|
|
struct keypoint *newfirst = make_point(0, 0, *points);
|
|
if (!newfirst)
|
|
return AVERROR(ENOMEM);
|
|
*points = newfirst;
|
|
}
|
|
|
|
av_assert0(last);
|
|
|
|
/* auto insert last key point if missing at x=1 */
|
|
if (last->x != 1.) {
|
|
struct keypoint *point = make_point(1, 1, NULL);
|
|
if (!point)
|
|
return AVERROR(ENOMEM);
|
|
last->next = point;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_nb_points(const struct keypoint *d)
|
|
{
|
|
int n = 0;
|
|
while (d) {
|
|
n++;
|
|
d = d->next;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
/**
|
|
* Natural cubic spline interpolation
|
|
* Finding curves using Cubic Splines notes by Steven Rauch and John Stockie.
|
|
* @see http://people.math.sfu.ca/~stockie/teaching/macm316/notes/splines.pdf
|
|
*/
|
|
static int interpolate(AVFilterContext *ctx, uint8_t *y, const struct keypoint *points)
|
|
{
|
|
int i, ret = 0;
|
|
const struct keypoint *point;
|
|
double xprev = 0;
|
|
|
|
int n = get_nb_points(points); // number of splines
|
|
|
|
double (*matrix)[3] = av_calloc(n, sizeof(*matrix));
|
|
double *h = av_malloc((n - 1) * sizeof(*h));
|
|
double *r = av_calloc(n, sizeof(*r));
|
|
|
|
if (!matrix || !h || !r) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
|
|
/* h(i) = x(i+1) - x(i) */
|
|
i = -1;
|
|
for (point = points; point; point = point->next) {
|
|
if (i != -1)
|
|
h[i] = point->x - xprev;
|
|
xprev = point->x;
|
|
i++;
|
|
}
|
|
|
|
/* right-side of the polynomials, will be modified to contains the solution */
|
|
point = points;
|
|
for (i = 1; i < n - 1; i++) {
|
|
double yp = point->y,
|
|
yc = point->next->y,
|
|
yn = point->next->next->y;
|
|
r[i] = 6 * ((yn-yc)/h[i] - (yc-yp)/h[i-1]);
|
|
point = point->next;
|
|
}
|
|
|
|
#define BD 0 /* sub diagonal (below main) */
|
|
#define MD 1 /* main diagonal (center) */
|
|
#define AD 2 /* sup diagonal (above main) */
|
|
|
|
/* left side of the polynomials into a tridiagonal matrix. */
|
|
matrix[0][MD] = matrix[n - 1][MD] = 1;
|
|
for (i = 1; i < n - 1; i++) {
|
|
matrix[i][BD] = h[i-1];
|
|
matrix[i][MD] = 2 * (h[i-1] + h[i]);
|
|
matrix[i][AD] = h[i];
|
|
}
|
|
|
|
/* tridiagonal solving of the linear system */
|
|
for (i = 1; i < n; i++) {
|
|
double den = matrix[i][MD] - matrix[i][BD] * matrix[i-1][AD];
|
|
double k = den ? 1./den : 1.;
|
|
matrix[i][AD] *= k;
|
|
r[i] = (r[i] - matrix[i][BD] * r[i - 1]) * k;
|
|
}
|
|
for (i = n - 2; i >= 0; i--)
|
|
r[i] = r[i] - matrix[i][AD] * r[i + 1];
|
|
|
|
/* compute the graph with x=[0..255] */
|
|
i = 0;
|
|
point = points;
|
|
av_assert0(point->next); // always at least 2 key points
|
|
while (point->next) {
|
|
double yc = point->y;
|
|
double yn = point->next->y;
|
|
|
|
double a = yc;
|
|
double b = (yn-yc)/h[i] - h[i]*r[i]/2. - h[i]*(r[i+1]-r[i])/6.;
|
|
double c = r[i] / 2.;
|
|
double d = (r[i+1] - r[i]) / (6.*h[i]);
|
|
|
|
int x;
|
|
int x_start = point->x * 255;
|
|
int x_end = point->next->x * 255;
|
|
|
|
av_assert0(x_start >= 0 && x_start <= 255 &&
|
|
x_end >= 0 && x_end <= 255);
|
|
|
|
for (x = x_start; x <= x_end; x++) {
|
|
double xx = (x - x_start) * 1/255.;
|
|
double yy = a + b*xx + c*xx*xx + d*xx*xx*xx;
|
|
y[x] = av_clipf(yy, 0, 1) * 255;
|
|
av_log(ctx, AV_LOG_DEBUG, "f(%f)=%f -> y[%d]=%d\n", xx, yy, x, y[x]);
|
|
}
|
|
|
|
point = point->next;
|
|
i++;
|
|
}
|
|
|
|
end:
|
|
av_free(matrix);
|
|
av_free(h);
|
|
av_free(r);
|
|
return ret;
|
|
}
|
|
|
|
static int parse_psfile(AVFilterContext *ctx, const char *fname)
|
|
{
|
|
CurvesContext *curves = ctx->priv;
|
|
uint8_t *buf;
|
|
size_t size;
|
|
int i, ret, av_unused(version), nb_curves;
|
|
AVBPrint ptstr;
|
|
static const int comp_ids[] = {3, 0, 1, 2};
|
|
|
|
av_bprint_init(&ptstr, 0, AV_BPRINT_SIZE_AUTOMATIC);
|
|
|
|
ret = av_file_map(fname, &buf, &size, 0, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
#define READ16(dst) do { \
|
|
if (size < 2) \
|
|
return AVERROR_INVALIDDATA; \
|
|
dst = AV_RB16(buf); \
|
|
buf += 2; \
|
|
size -= 2; \
|
|
} while (0)
|
|
|
|
READ16(version);
|
|
READ16(nb_curves);
|
|
for (i = 0; i < FFMIN(nb_curves, FF_ARRAY_ELEMS(comp_ids)); i++) {
|
|
int nb_points, n;
|
|
av_bprint_clear(&ptstr);
|
|
READ16(nb_points);
|
|
for (n = 0; n < nb_points; n++) {
|
|
int y, x;
|
|
READ16(y);
|
|
READ16(x);
|
|
av_bprintf(&ptstr, "%f/%f ", x / 255., y / 255.);
|
|
}
|
|
if (*ptstr.str) {
|
|
char **pts = &curves->comp_points_str[comp_ids[i]];
|
|
if (!*pts) {
|
|
*pts = av_strdup(ptstr.str);
|
|
av_log(ctx, AV_LOG_DEBUG, "curves %d (intid=%d) [%d points]: [%s]\n",
|
|
i, comp_ids[i], nb_points, *pts);
|
|
if (!*pts) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
end:
|
|
av_bprint_finalize(&ptstr, NULL);
|
|
av_file_unmap(buf, size);
|
|
return ret;
|
|
}
|
|
|
|
static av_cold int init(AVFilterContext *ctx)
|
|
{
|
|
int i, j, ret;
|
|
CurvesContext *curves = ctx->priv;
|
|
struct keypoint *comp_points[NB_COMP + 1] = {0};
|
|
char **pts = curves->comp_points_str;
|
|
const char *allp = curves->comp_points_str_all;
|
|
|
|
//if (!allp && curves->preset != PRESET_NONE && curves_presets[curves->preset].all)
|
|
// allp = curves_presets[curves->preset].all;
|
|
|
|
if (allp) {
|
|
for (i = 0; i < NB_COMP; i++) {
|
|
if (!pts[i])
|
|
pts[i] = av_strdup(allp);
|
|
if (!pts[i])
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
|
|
if (curves->psfile) {
|
|
ret = parse_psfile(ctx, curves->psfile);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (curves->preset != PRESET_NONE) {
|
|
#define SET_COMP_IF_NOT_SET(n, name) do { \
|
|
if (!pts[n] && curves_presets[curves->preset].name) { \
|
|
pts[n] = av_strdup(curves_presets[curves->preset].name); \
|
|
if (!pts[n]) \
|
|
return AVERROR(ENOMEM); \
|
|
} \
|
|
} while (0)
|
|
SET_COMP_IF_NOT_SET(0, r);
|
|
SET_COMP_IF_NOT_SET(1, g);
|
|
SET_COMP_IF_NOT_SET(2, b);
|
|
SET_COMP_IF_NOT_SET(3, master);
|
|
}
|
|
|
|
for (i = 0; i < NB_COMP + 1; i++) {
|
|
ret = parse_points_str(ctx, comp_points + i, curves->comp_points_str[i]);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = interpolate(ctx, curves->graph[i], comp_points[i]);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (pts[NB_COMP]) {
|
|
for (i = 0; i < NB_COMP; i++)
|
|
for (j = 0; j < 256; j++)
|
|
curves->graph[i][j] = curves->graph[NB_COMP][curves->graph[i][j]];
|
|
}
|
|
|
|
if (av_log_get_level() >= AV_LOG_VERBOSE) {
|
|
for (i = 0; i < NB_COMP; i++) {
|
|
struct keypoint *point = comp_points[i];
|
|
av_log(ctx, AV_LOG_VERBOSE, "#%d points:", i);
|
|
while (point) {
|
|
av_log(ctx, AV_LOG_VERBOSE, " (%f;%f)", point->x, point->y);
|
|
point = point->next;
|
|
}
|
|
av_log(ctx, AV_LOG_VERBOSE, "\n");
|
|
av_log(ctx, AV_LOG_VERBOSE, "#%d values:", i);
|
|
for (j = 0; j < 256; j++)
|
|
av_log(ctx, AV_LOG_VERBOSE, " %02X", curves->graph[i][j]);
|
|
av_log(ctx, AV_LOG_VERBOSE, "\n");
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < NB_COMP + 1; i++) {
|
|
struct keypoint *point = comp_points[i];
|
|
while (point) {
|
|
struct keypoint *next = point->next;
|
|
av_free(point);
|
|
point = next;
|
|
}
|
|
}
|
|
|
|
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_NONE
|
|
};
|
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
|
|
return 0;
|
|
}
|
|
|
|
static int config_input(AVFilterLink *inlink)
|
|
{
|
|
CurvesContext *curves = inlink->dst->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
ff_fill_rgba_map(curves->rgba_map, inlink->format);
|
|
curves->step = av_get_padded_bits_per_pixel(desc) >> 3;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
|
{
|
|
int x, y, direct = 0;
|
|
AVFilterContext *ctx = inlink->dst;
|
|
CurvesContext *curves = ctx->priv;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
AVFrame *out;
|
|
uint8_t *dst;
|
|
const uint8_t *src;
|
|
const int step = curves->step;
|
|
const uint8_t r = curves->rgba_map[R];
|
|
const uint8_t g = curves->rgba_map[G];
|
|
const uint8_t b = curves->rgba_map[B];
|
|
const uint8_t a = curves->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 AVERROR(ENOMEM);
|
|
}
|
|
av_frame_copy_props(out, in);
|
|
}
|
|
|
|
dst = out->data[0];
|
|
src = in ->data[0];
|
|
|
|
for (y = 0; y < inlink->h; y++) {
|
|
for (x = 0; x < inlink->w * step; x += step) {
|
|
dst[x + r] = curves->graph[R][src[x + r]];
|
|
dst[x + g] = curves->graph[G][src[x + g]];
|
|
dst[x + b] = curves->graph[B][src[x + b]];
|
|
if (!direct && step == 4)
|
|
dst[x + a] = src[x + a];
|
|
}
|
|
dst += out->linesize[0];
|
|
src += in ->linesize[0];
|
|
}
|
|
|
|
if (!direct)
|
|
av_frame_free(&in);
|
|
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static const AVFilterPad curves_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad curves_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter avfilter_vf_curves = {
|
|
.name = "curves",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust components curves."),
|
|
.priv_size = sizeof(CurvesContext),
|
|
.init = init,
|
|
.query_formats = query_formats,
|
|
.inputs = curves_inputs,
|
|
.outputs = curves_outputs,
|
|
.priv_class = &curves_class,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
|
|
};
|