mirror of https://github.com/mpv-player/mpv
516 lines
11 KiB
C
516 lines
11 KiB
C
/*
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* vf_eq2.c
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*
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* Software equalizer (brightness, contrast, gamma, saturation)
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*
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* Hampa Hug <hampa@hampa.ch> (original LUT gamma/contrast/brightness filter)
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* Daniel Moreno <comac@comac.darktech.org> (saturation, R/G/B gamma support)
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* Richard Felker (original MMX contrast/brightness code (vf_eq.c))
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* Michael Niedermayer <michalni@gmx.at> (LUT16)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <inttypes.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "cpudetect.h"
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#ifdef USE_SETLOCALE
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#include <locale.h>
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#endif
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#define LUT16
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/* Per channel parameters */
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typedef struct eq2_param_t {
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unsigned char lut[256];
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#ifdef LUT16
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uint16_t lut16[256*256];
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#endif
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int lut_clean;
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void (*adjust) (struct eq2_param_t *par, unsigned char *dst, unsigned char *src,
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unsigned w, unsigned h, unsigned dstride, unsigned sstride);
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double c;
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double b;
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double g;
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double w;
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} eq2_param_t;
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typedef struct vf_priv_s {
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eq2_param_t param[3];
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double contrast;
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double brightness;
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double saturation;
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double gamma;
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double gamma_weight;
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double rgamma;
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double ggamma;
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double bgamma;
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unsigned buf_w[3];
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unsigned buf_h[3];
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unsigned char *buf[3];
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} vf_eq2_t;
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static
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void create_lut (eq2_param_t *par)
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{
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unsigned i;
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double g, v;
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double lw, gw;
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g = par->g;
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gw = par->w;
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lw = 1.0 - gw;
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if ((g < 0.001) || (g > 1000.0)) {
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g = 1.0;
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}
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g = 1.0 / g;
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for (i = 0; i < 256; i++) {
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v = (double) i / 255.0;
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v = par->c * (v - 0.5) + 0.5 + par->b;
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if (v <= 0.0) {
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par->lut[i] = 0;
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}
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else {
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v = v*lw + pow(v, g)*gw;
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if (v >= 1.0) {
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par->lut[i] = 255;
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}
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else {
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par->lut[i] = (unsigned char) (256.0 * v);
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}
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}
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}
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#ifdef LUT16
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for(i=0; i<256*256; i++){
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par->lut16[i]= par->lut[i&0xFF] + (par->lut[i>>8]<<8);
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}
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#endif
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par->lut_clean = 1;
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}
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#ifdef HAVE_MMX
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static
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void affine_1d_MMX (eq2_param_t *par, unsigned char *dst, unsigned char *src,
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unsigned w, unsigned h, unsigned dstride, unsigned sstride)
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{
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unsigned i;
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int contrast, brightness;
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unsigned dstep, sstep;
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int pel;
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short brvec[4];
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short contvec[4];
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// printf("\nmmx: src=%p dst=%p w=%d h=%d ds=%d ss=%d\n",src,dst,w,h,dstride,sstride);
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contrast = (int) (par->c * 256 * 16);
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brightness = ((int) (100.0 * par->b + 100.0) * 511) / 200 - 128 - contrast / 32;
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brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
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contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;
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sstep = sstride - w;
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dstep = dstride - w;
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while (h-- > 0) {
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asm volatile (
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"movq (%5), %%mm3 \n\t"
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"movq (%6), %%mm4 \n\t"
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"pxor %%mm0, %%mm0 \n\t"
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"movl %4, %%eax\n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"movq (%0), %%mm1 \n\t"
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"movq (%0), %%mm2 \n\t"
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"punpcklbw %%mm0, %%mm1 \n\t"
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"punpckhbw %%mm0, %%mm2 \n\t"
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"psllw $4, %%mm1 \n\t"
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"psllw $4, %%mm2 \n\t"
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"pmulhw %%mm4, %%mm1 \n\t"
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"pmulhw %%mm4, %%mm2 \n\t"
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"paddw %%mm3, %%mm1 \n\t"
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"paddw %%mm3, %%mm2 \n\t"
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"packuswb %%mm2, %%mm1 \n\t"
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"addl $8, %0 \n\t"
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"movq %%mm1, (%1) \n\t"
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"addl $8, %1 \n\t"
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"decl %%eax \n\t"
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"jnz 1b \n\t"
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: "=r" (src), "=r" (dst)
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: "0" (src), "1" (dst), "r" (w >> 3), "r" (brvec), "r" (contvec)
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: "%eax"
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);
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for (i = w & 7; i > 0; i--) {
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pel = ((*src++ * contrast) >> 12) + brightness;
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if (pel & 768) {
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pel = (-pel) >> 31;
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}
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*dst++ = pel;
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}
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src += sstep;
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dst += dstep;
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}
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asm volatile ( "emms \n\t" ::: "memory" );
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}
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#endif
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static
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void apply_lut (eq2_param_t *par, unsigned char *dst, unsigned char *src,
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unsigned w, unsigned h, unsigned dstride, unsigned sstride)
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{
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unsigned i, j, w2;
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unsigned char *lut;
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uint16_t *lut16;
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if (!par->lut_clean) {
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create_lut (par);
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}
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lut = par->lut;
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#ifdef LUT16
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lut16 = par->lut16;
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w2= (w>>3)<<2;
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for (j = 0; j < h; j++) {
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uint16_t *src16= (uint16_t*)src;
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uint16_t *dst16= (uint16_t*)dst;
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for (i = 0; i < w2; i+=4) {
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dst16[i+0] = lut16[src16[i+0]];
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dst16[i+1] = lut16[src16[i+1]];
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dst16[i+2] = lut16[src16[i+2]];
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dst16[i+3] = lut16[src16[i+3]];
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}
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i <<= 1;
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#else
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w2= (w>>3)<<3;
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for (j = 0; j < h; j++) {
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for (i = 0; i < w2; i+=8) {
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dst[i+0] = lut[src[i+0]];
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dst[i+1] = lut[src[i+1]];
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dst[i+2] = lut[src[i+2]];
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dst[i+3] = lut[src[i+3]];
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dst[i+4] = lut[src[i+4]];
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dst[i+5] = lut[src[i+5]];
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dst[i+6] = lut[src[i+6]];
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dst[i+7] = lut[src[i+7]];
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}
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#endif
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for (; i < w; i++) {
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dst[i] = lut[src[i]];
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}
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src += sstride;
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dst += dstride;
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}
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}
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static
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int put_image (vf_instance_t *vf, mp_image_t *src)
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{
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unsigned i;
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vf_eq2_t *eq2;
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mp_image_t *dst;
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unsigned long img_n,img_c;
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eq2 = vf->priv;
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if ((eq2->buf_w[0] != src->w) || (eq2->buf_h[0] != src->h)) {
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eq2->buf_w[0] = src->w;
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eq2->buf_h[0] = src->h;
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eq2->buf_w[1] = eq2->buf_w[2] = src->w >> src->chroma_x_shift;
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eq2->buf_h[1] = eq2->buf_h[2] = src->h >> src->chroma_y_shift;
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img_n = eq2->buf_w[0]*eq2->buf_h[0];
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if(src->num_planes>1){
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img_c = eq2->buf_w[1]*eq2->buf_h[1];
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eq2->buf[0] = (unsigned char *) realloc (eq2->buf[0], img_n + 2*img_c);
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eq2->buf[1] = eq2->buf[0] + img_n;
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eq2->buf[2] = eq2->buf[1] + img_c;
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} else
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eq2->buf[0] = (unsigned char *) realloc (eq2->buf[0], img_n);
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}
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dst = vf_get_image (vf->next, src->imgfmt, MP_IMGTYPE_EXPORT, 0, src->w, src->h);
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for (i = 0; i < ((src->num_planes>1)?3:1); i++) {
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if (eq2->param[i].adjust != NULL) {
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dst->planes[i] = eq2->buf[i];
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dst->stride[i] = eq2->buf_w[i];
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eq2->param[i].adjust (&eq2->param[i], dst->planes[i], src->planes[i],
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eq2->buf_w[i], eq2->buf_h[i], dst->stride[i], src->stride[i]);
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}
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else {
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dst->planes[i] = src->planes[i];
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dst->stride[i] = src->stride[i];
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}
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}
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return vf_next_put_image (vf, dst);
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}
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static
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void check_values (eq2_param_t *par)
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{
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/* yuck! floating point comparisons... */
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if ((par->c == 1.0) && (par->b == 0.0) && (par->g == 1.0)) {
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par->adjust = NULL;
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}
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#ifdef HAVE_MMX
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else if (par->g == 1.0 && gCpuCaps.hasMMX) {
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par->adjust = &affine_1d_MMX;
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}
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#endif
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else {
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par->adjust = &apply_lut;
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}
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}
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static
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void print_values (vf_eq2_t *eq2)
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{
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mp_msg (MSGT_VFILTER, MSGL_V, "vf_eq2: c=%.2f b=%.2f g=%.4f s=%.2f \n",
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eq2->contrast, eq2->brightness, eq2->gamma, eq2->saturation
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);
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}
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static
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void set_contrast (vf_eq2_t *eq2, double c)
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{
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eq2->contrast = c;
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eq2->param[0].c = c;
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eq2->param[0].lut_clean = 0;
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check_values (&eq2->param[0]);
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print_values (eq2);
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}
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static
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void set_brightness (vf_eq2_t *eq2, double b)
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{
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eq2->brightness = b;
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eq2->param[0].b = b;
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eq2->param[0].lut_clean = 0;
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check_values (&eq2->param[0]);
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print_values (eq2);
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}
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static
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void set_gamma (vf_eq2_t *eq2, double g)
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{
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eq2->gamma = g;
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eq2->param[0].g = eq2->gamma * eq2->ggamma;
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eq2->param[1].g = sqrt (eq2->bgamma / eq2->ggamma);
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eq2->param[2].g = sqrt (eq2->rgamma / eq2->ggamma);
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eq2->param[0].w = eq2->param[1].w = eq2->param[2].w = eq2->gamma_weight;
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eq2->param[0].lut_clean = 0;
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eq2->param[1].lut_clean = 0;
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eq2->param[2].lut_clean = 0;
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check_values (&eq2->param[0]);
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check_values (&eq2->param[1]);
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check_values (&eq2->param[2]);
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print_values (eq2);
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}
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static
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void set_saturation (vf_eq2_t *eq2, double s)
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{
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eq2->saturation = s;
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eq2->param[1].c = s;
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eq2->param[2].c = s;
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eq2->param[1].lut_clean = 0;
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eq2->param[2].lut_clean = 0;
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check_values (&eq2->param[1]);
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check_values (&eq2->param[2]);
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print_values (eq2);
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}
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static
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int control (vf_instance_t *vf, int request, void *data)
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{
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vf_equalizer_t *eq;
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switch (request) {
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case VFCTRL_SET_EQUALIZER:
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eq = (vf_equalizer_t *) data;
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if (strcmp (eq->item, "gamma") == 0) {
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set_gamma (vf->priv, exp (log (8.0) * eq->value / 100.0));
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "contrast") == 0) {
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set_contrast (vf->priv, (1.0 / 100.0) * (eq->value + 100));
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "brightness") == 0) {
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set_brightness (vf->priv, (1.0 / 100.0) * eq->value);
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "saturation") == 0) {
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set_saturation (vf->priv, (double) (eq->value + 100) / 100.0);
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return CONTROL_TRUE;
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}
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break;
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case VFCTRL_GET_EQUALIZER:
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eq = (vf_equalizer_t *) data;
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if (strcmp (eq->item, "gamma") == 0) {
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eq->value = (int) (100.0 * log (vf->priv->gamma) / log (8.0));
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "contrast") == 0) {
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eq->value = (int) (100.0 * vf->priv->contrast) - 100;
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "brightness") == 0) {
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eq->value = (int) (100.0 * vf->priv->brightness);
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return CONTROL_TRUE;
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}
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else if (strcmp (eq->item, "saturation") == 0) {
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eq->value = (int) (100.0 * vf->priv->saturation) - 100;
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return CONTROL_TRUE;
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}
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break;
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}
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return vf_next_control (vf, request, data);
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}
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static
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int query_format (vf_instance_t *vf, unsigned fmt)
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{
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switch (fmt) {
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case IMGFMT_YVU9:
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case IMGFMT_IF09:
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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case IMGFMT_Y800:
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case IMGFMT_Y8:
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case IMGFMT_444P:
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case IMGFMT_422P:
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case IMGFMT_411P:
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return vf_next_query_format (vf, fmt);
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}
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return 0;
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}
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static
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void uninit (vf_instance_t *vf)
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{
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if (vf->priv != NULL) {
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free (vf->priv->buf[0]);
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free (vf->priv);
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}
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}
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static
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int open (vf_instance_t *vf, char *args)
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{
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unsigned i;
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vf_eq2_t *eq2;
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double par[8];
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vf->control = control;
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vf->query_format = query_format;
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vf->put_image = put_image;
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vf->uninit = uninit;
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vf->priv = (vf_eq2_t *) malloc (sizeof (vf_eq2_t));
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eq2 = vf->priv;
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for (i = 0; i < 3; i++) {
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eq2->buf[i] = NULL;
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eq2->buf_w[i] = 0;
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eq2->buf_h[i] = 0;
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eq2->param[i].adjust = NULL;
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eq2->param[i].c = 1.0;
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eq2->param[i].b = 0.0;
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eq2->param[i].g = 1.0;
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eq2->param[i].lut_clean = 0;
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}
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eq2->contrast = 1.0;
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eq2->brightness = 0.0;
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eq2->saturation = 1.0;
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eq2->gamma = 1.0;
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eq2->gamma_weight = 1.0;
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eq2->rgamma = 1.0;
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eq2->ggamma = 1.0;
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eq2->bgamma = 1.0;
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if (args != NULL) {
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par[0] = 1.0;
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par[1] = 1.0;
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par[2] = 0.0;
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par[3] = 1.0;
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par[4] = 1.0;
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par[5] = 1.0;
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par[6] = 1.0;
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par[7] = 1.0;
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#ifdef USE_SETLOCALE
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setlocale (LC_NUMERIC, "C");
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#endif
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sscanf (args, "%lf:%lf:%lf:%lf:%lf:%lf:%lf:%lf",
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par, par + 1, par + 2, par + 3, par + 4, par + 5, par + 6, par + 7
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);
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#ifdef USE_SETLOCALE
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setlocale (LC_NUMERIC, "");
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#endif
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eq2->rgamma = par[4];
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eq2->ggamma = par[5];
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eq2->bgamma = par[6];
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eq2->gamma_weight = par[7];
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set_gamma (eq2, par[0]);
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set_contrast (eq2, par[1]);
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set_brightness (eq2, par[2]);
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set_saturation (eq2, par[3]);
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}
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return 1;
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}
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|
|
vf_info_t vf_info_eq2 = {
|
|
"Software equalizer",
|
|
"eq2",
|
|
"Hampa Hug, Daniel Moreno, Richard Felker",
|
|
"",
|
|
&open,
|
|
NULL
|
|
};
|