mirror of https://github.com/mpv-player/mpv
449 lines
10 KiB
C
449 lines
10 KiB
C
/*
|
|
* Software equalizer (brightness, contrast, gamma, saturation)
|
|
*
|
|
* Hampa Hug <hampa@hampa.ch> (original LUT gamma/contrast/brightness filter)
|
|
* Daniel Moreno <comac@comac.darktech.org> (saturation, R/G/B gamma support)
|
|
* Richard Felker (original MMX contrast/brightness code (vf_eq.c))
|
|
* Michael Niedermayer <michalni@gmx.at> (LUT16)
|
|
*
|
|
* This file is part of MPlayer.
|
|
*
|
|
* MPlayer is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* MPlayer 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "config.h"
|
|
#include "common/msg.h"
|
|
#include "options/m_option.h"
|
|
|
|
#include "video/img_format.h"
|
|
#include "video/mp_image.h"
|
|
#include "vf.h"
|
|
|
|
#define LUT16
|
|
|
|
/* Per channel parameters */
|
|
typedef struct eq2_param_t {
|
|
unsigned char lut[256];
|
|
#ifdef LUT16
|
|
uint16_t lut16[256*256];
|
|
#endif
|
|
int lut_clean;
|
|
|
|
void (*adjust) (struct eq2_param_t *par, unsigned char *dst, unsigned char *src,
|
|
unsigned w, unsigned h, unsigned dstride, unsigned sstride);
|
|
|
|
double c;
|
|
double b;
|
|
double g;
|
|
double w;
|
|
} eq2_param_t;
|
|
|
|
typedef struct vf_priv_s {
|
|
struct mp_log *log;
|
|
eq2_param_t param[3];
|
|
|
|
double contrast;
|
|
double brightness;
|
|
double saturation;
|
|
|
|
double gamma;
|
|
double gamma_weight;
|
|
double rgamma;
|
|
double ggamma;
|
|
double bgamma;
|
|
|
|
unsigned buf_w[3];
|
|
unsigned buf_h[3];
|
|
unsigned char *buf[3];
|
|
|
|
int gamma_i, contrast_i, brightness_i, saturation_i;
|
|
|
|
double par[8];
|
|
} vf_eq2_t;
|
|
|
|
|
|
static
|
|
void create_lut (eq2_param_t *par)
|
|
{
|
|
unsigned i;
|
|
double g, v;
|
|
double lw, gw;
|
|
|
|
g = par->g;
|
|
gw = par->w;
|
|
lw = 1.0 - gw;
|
|
|
|
if ((g < 0.001) || (g > 1000.0)) {
|
|
g = 1.0;
|
|
}
|
|
|
|
g = 1.0 / g;
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
v = (double) i / 255.0;
|
|
v = par->c * (v - 0.5) + 0.5 + par->b;
|
|
|
|
if (v <= 0.0) {
|
|
par->lut[i] = 0;
|
|
}
|
|
else {
|
|
v = v*lw + pow(v, g)*gw;
|
|
|
|
if (v >= 1.0) {
|
|
par->lut[i] = 255;
|
|
}
|
|
else {
|
|
par->lut[i] = (unsigned char) (256.0 * v);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef LUT16
|
|
for(i=0; i<256*256; i++){
|
|
par->lut16[i]= par->lut[i&0xFF] + (par->lut[i>>8]<<8);
|
|
}
|
|
#endif
|
|
|
|
par->lut_clean = 1;
|
|
}
|
|
|
|
static
|
|
void apply_lut (eq2_param_t *par, unsigned char *dst, unsigned char *src,
|
|
unsigned w, unsigned h, unsigned dstride, unsigned sstride)
|
|
{
|
|
unsigned i, j, w2;
|
|
unsigned char *lut;
|
|
uint16_t *lut16;
|
|
|
|
if (!par->lut_clean) {
|
|
create_lut (par);
|
|
}
|
|
|
|
lut = par->lut;
|
|
#ifdef LUT16
|
|
lut16 = par->lut16;
|
|
w2= (w>>3)<<2;
|
|
for (j = 0; j < h; j++) {
|
|
uint16_t *src16= (uint16_t*)src;
|
|
uint16_t *dst16= (uint16_t*)dst;
|
|
for (i = 0; i < w2; i+=4) {
|
|
dst16[i+0] = lut16[src16[i+0]];
|
|
dst16[i+1] = lut16[src16[i+1]];
|
|
dst16[i+2] = lut16[src16[i+2]];
|
|
dst16[i+3] = lut16[src16[i+3]];
|
|
}
|
|
i <<= 1;
|
|
#else
|
|
w2= (w>>3)<<3;
|
|
for (j = 0; j < h; j++) {
|
|
for (i = 0; i < w2; i+=8) {
|
|
dst[i+0] = lut[src[i+0]];
|
|
dst[i+1] = lut[src[i+1]];
|
|
dst[i+2] = lut[src[i+2]];
|
|
dst[i+3] = lut[src[i+3]];
|
|
dst[i+4] = lut[src[i+4]];
|
|
dst[i+5] = lut[src[i+5]];
|
|
dst[i+6] = lut[src[i+6]];
|
|
dst[i+7] = lut[src[i+7]];
|
|
}
|
|
#endif
|
|
for (; i < w; i++) {
|
|
dst[i] = lut[src[i]];
|
|
}
|
|
|
|
src += sstride;
|
|
dst += dstride;
|
|
}
|
|
}
|
|
|
|
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *src)
|
|
{
|
|
vf_eq2_t *eq2;
|
|
unsigned long img_n,img_c;
|
|
|
|
eq2 = vf->priv;
|
|
|
|
bool skip = true;
|
|
for (int i = 0; i < 3; i++)
|
|
skip &= eq2->param[i].adjust == NULL;
|
|
|
|
if (skip)
|
|
return src;
|
|
|
|
if ((eq2->buf_w[0] != src->w) || (eq2->buf_h[0] != src->h)) {
|
|
eq2->buf_w[0] = src->w;
|
|
eq2->buf_h[0] = src->h;
|
|
eq2->buf_w[1] = eq2->buf_w[2] = src->w >> src->chroma_x_shift;
|
|
eq2->buf_h[1] = eq2->buf_h[2] = src->h >> src->chroma_y_shift;
|
|
img_n = eq2->buf_w[0]*eq2->buf_h[0];
|
|
if(src->num_planes>1){
|
|
img_c = eq2->buf_w[1]*eq2->buf_h[1];
|
|
eq2->buf[0] = realloc (eq2->buf[0], img_n + 2*img_c);
|
|
eq2->buf[1] = eq2->buf[0] + img_n;
|
|
eq2->buf[2] = eq2->buf[1] + img_c;
|
|
} else
|
|
eq2->buf[0] = realloc (eq2->buf[0], img_n);
|
|
}
|
|
|
|
struct mp_image dst = *src;
|
|
|
|
for (int i = 0; i < ((src->num_planes>1)?3:1); i++) {
|
|
if (eq2->param[i].adjust != NULL) {
|
|
dst.planes[i] = eq2->buf[i];
|
|
dst.stride[i] = eq2->buf_w[i];
|
|
|
|
eq2->param[i].adjust (&eq2->param[i], dst.planes[i], src->planes[i],
|
|
eq2->buf_w[i], eq2->buf_h[i], dst.stride[i], src->stride[i]);
|
|
}
|
|
}
|
|
|
|
struct mp_image *new = vf_alloc_out_image(vf);
|
|
mp_image_copy(new, &dst);
|
|
mp_image_copy_attributes(new, &dst);
|
|
|
|
talloc_free(src);
|
|
return new;
|
|
}
|
|
|
|
static
|
|
void check_values (eq2_param_t *par)
|
|
{
|
|
/* yuck! floating point comparisons... */
|
|
|
|
if ((par->c == 1.0) && (par->b == 0.0) && (par->g == 1.0)) {
|
|
par->adjust = NULL;
|
|
}
|
|
else {
|
|
par->adjust = &apply_lut;
|
|
}
|
|
}
|
|
|
|
static
|
|
void print_values (vf_eq2_t *eq2)
|
|
{
|
|
MP_VERBOSE(eq2, "vf_eq2: c=%.2f b=%.2f g=%.4f s=%.2f \n",
|
|
eq2->contrast, eq2->brightness, eq2->gamma, eq2->saturation
|
|
);
|
|
}
|
|
|
|
static
|
|
void set_contrast (vf_eq2_t *eq2, double c)
|
|
{
|
|
eq2->contrast = c;
|
|
eq2->param[0].c = c;
|
|
eq2->param[0].lut_clean = 0;
|
|
check_values (&eq2->param[0]);
|
|
print_values (eq2);
|
|
}
|
|
|
|
static
|
|
void set_brightness (vf_eq2_t *eq2, double b)
|
|
{
|
|
eq2->brightness = b;
|
|
eq2->param[0].b = b;
|
|
eq2->param[0].lut_clean = 0;
|
|
check_values (&eq2->param[0]);
|
|
print_values (eq2);
|
|
}
|
|
|
|
static
|
|
void set_gamma (vf_eq2_t *eq2, double g)
|
|
{
|
|
eq2->gamma = g;
|
|
|
|
eq2->param[0].g = eq2->gamma * eq2->ggamma;
|
|
eq2->param[1].g = sqrt (eq2->bgamma / eq2->ggamma);
|
|
eq2->param[2].g = sqrt (eq2->rgamma / eq2->ggamma);
|
|
eq2->param[0].w = eq2->param[1].w = eq2->param[2].w = eq2->gamma_weight;
|
|
|
|
eq2->param[0].lut_clean = 0;
|
|
eq2->param[1].lut_clean = 0;
|
|
eq2->param[2].lut_clean = 0;
|
|
|
|
check_values (&eq2->param[0]);
|
|
check_values (&eq2->param[1]);
|
|
check_values (&eq2->param[2]);
|
|
|
|
print_values (eq2);
|
|
}
|
|
|
|
static
|
|
void set_saturation (vf_eq2_t *eq2, double s)
|
|
{
|
|
eq2->saturation = s;
|
|
|
|
eq2->param[1].c = s;
|
|
eq2->param[2].c = s;
|
|
|
|
eq2->param[1].lut_clean = 0;
|
|
eq2->param[2].lut_clean = 0;
|
|
|
|
check_values (&eq2->param[1]);
|
|
check_values (&eq2->param[2]);
|
|
|
|
print_values (eq2);
|
|
}
|
|
|
|
static
|
|
int control (vf_instance_t *vf, int request, void *data)
|
|
{
|
|
vf_equalizer_t *eq;
|
|
|
|
switch (request) {
|
|
case VFCTRL_SET_EQUALIZER:
|
|
eq = (vf_equalizer_t *) data;
|
|
|
|
if (strcmp (eq->item, "gamma") == 0) {
|
|
set_gamma (vf->priv, exp (log (8.0) * eq->value / 100.0));
|
|
vf->priv->gamma_i = eq->value;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "contrast") == 0) {
|
|
set_contrast (vf->priv, (1.0 / 100.0) * (eq->value + 100));
|
|
vf->priv->contrast_i = eq->value;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "brightness") == 0) {
|
|
set_brightness (vf->priv, (1.0 / 100.0) * eq->value);
|
|
vf->priv->brightness_i = eq->value;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "saturation") == 0) {
|
|
set_saturation (vf->priv, (double) (eq->value + 100) / 100.0);
|
|
vf->priv->saturation_i = eq->value;
|
|
return CONTROL_TRUE;
|
|
}
|
|
break;
|
|
|
|
case VFCTRL_GET_EQUALIZER:
|
|
eq = (vf_equalizer_t *) data;
|
|
if (strcmp (eq->item, "gamma") == 0) {
|
|
eq->value = vf->priv->gamma_i;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "contrast") == 0) {
|
|
eq->value = vf->priv->contrast_i;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "brightness") == 0) {
|
|
eq->value = vf->priv->brightness_i;
|
|
return CONTROL_TRUE;
|
|
}
|
|
else if (strcmp (eq->item, "saturation") == 0) {
|
|
eq->value = vf->priv->saturation_i;
|
|
return CONTROL_TRUE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static
|
|
int query_format (vf_instance_t *vf, unsigned fmt)
|
|
{
|
|
switch (fmt) {
|
|
case IMGFMT_Y8:
|
|
case IMGFMT_444P:
|
|
case IMGFMT_422P:
|
|
case IMGFMT_440P:
|
|
case IMGFMT_420P:
|
|
case IMGFMT_411P:
|
|
case IMGFMT_410P:
|
|
return vf_next_query_format (vf, fmt);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static
|
|
void uninit (vf_instance_t *vf)
|
|
{
|
|
if (vf->priv != NULL) {
|
|
free (vf->priv->buf[0]);
|
|
}
|
|
}
|
|
|
|
static
|
|
int vf_open(vf_instance_t *vf)
|
|
{
|
|
unsigned i;
|
|
vf_eq2_t *eq2;
|
|
double *par = vf->priv->par;
|
|
|
|
vf->control = control;
|
|
vf->query_format = query_format;
|
|
vf->filter = filter;
|
|
vf->uninit = uninit;
|
|
|
|
eq2 = vf->priv;
|
|
eq2->log = vf->log;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
eq2->buf[i] = NULL;
|
|
eq2->buf_w[i] = 0;
|
|
eq2->buf_h[i] = 0;
|
|
|
|
eq2->param[i].adjust = NULL;
|
|
eq2->param[i].c = 1.0;
|
|
eq2->param[i].b = 0.0;
|
|
eq2->param[i].g = 1.0;
|
|
eq2->param[i].lut_clean = 0;
|
|
}
|
|
|
|
eq2->rgamma = par[4];
|
|
eq2->ggamma = par[5];
|
|
eq2->bgamma = par[6];
|
|
eq2->gamma_weight = par[7];
|
|
|
|
set_gamma (eq2, par[0]);
|
|
eq2->gamma_i = (int) (100.0 * log (vf->priv->gamma) / log (8.0));
|
|
set_contrast (eq2, par[1]);
|
|
eq2->contrast_i = (int) (100.0 * vf->priv->contrast) - 100;
|
|
set_brightness (eq2, par[2]);
|
|
eq2->brightness_i = (int) (100.0 * vf->priv->brightness);
|
|
set_saturation (eq2, par[3]);
|
|
eq2->saturation_i = (int) (100.0 * vf->priv->saturation) - 100;
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define OPT_BASE_STRUCT struct vf_priv_s
|
|
const vf_info_t vf_info_eq = {
|
|
.description = "Software equalizer",
|
|
.name = "eq",
|
|
.open = &vf_open,
|
|
.priv_size = sizeof(struct vf_priv_s),
|
|
.options = (const struct m_option[]){
|
|
#define PARAM(name, n, def, min_, max_) \
|
|
OPT_DOUBLE(name, par[n], CONF_RANGE, .min = min_, .max = max_, OPTDEF_DOUBLE(def))
|
|
PARAM("gamma", 0, 1.0, 0.1, 10),
|
|
PARAM("contrast", 1, 1.0, -2, 2),
|
|
PARAM("brightness", 2, 0.0, -1, 1),
|
|
PARAM("saturation", 3, 1.0, 0, 3),
|
|
PARAM("rg", 4, 1.0, 0.1, 10),
|
|
PARAM("gg", 5, 1.0, 0.1, 10),
|
|
PARAM("bg", 6, 1.0, 0.1, 10),
|
|
PARAM("weight", 7, 1.0, 0, 1),
|
|
{0}
|
|
},
|
|
};
|