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mpv/libmpcodecs/vf_ow.c

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/*
Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @todo try to change to int
* @todo try lifting based implementation
* @todo optimize optimize optimize
* @todo hard tresholding
* @todo use QP to decide filter strength
* @todo wavelet normalization / least squares optimal signal vs. noise thresholds
*/
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include "config.h"
#include "mp_msg.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
//===========================================================================//
static const uint8_t __attribute__((aligned(8))) dither[8][8]={
{ 0, 48, 12, 60, 3, 51, 15, 63, },
{ 32, 16, 44, 28, 35, 19, 47, 31, },
{ 8, 56, 4, 52, 11, 59, 7, 55, },
{ 40, 24, 36, 20, 43, 27, 39, 23, },
{ 2, 50, 14, 62, 1, 49, 13, 61, },
{ 34, 18, 46, 30, 33, 17, 45, 29, },
{ 10, 58, 6, 54, 9, 57, 5, 53, },
{ 42, 26, 38, 22, 41, 25, 37, 21, },
};
//FIXME the above is duplicated in many filters
struct vf_priv_s {
float strength[2];
float delta;
int mode;
int depth;
float *plane[16][4];
int stride;
};
#define S 1.41421356237 //sqrt(2)
static const double coeff[2][5]={
{
0.6029490182363579 *S,
0.2668641184428723 *S,
-0.07822326652898785 *S,
-0.01686411844287495 *S,
0.02674875741080976 *S
},{
1.115087052456994 /S,
-0.5912717631142470 /S,
-0.05754352622849957 /S,
0.09127176311424948 /S
}
};
static const double icoeff[2][5]={
{
1.115087052456994 /S,
0.5912717631142470 /S,
-0.05754352622849957 /S,
-0.09127176311424948 /S
},{
0.6029490182363579 *S,
-0.2668641184428723 *S,
-0.07822326652898785 *S,
0.01686411844287495 *S,
0.02674875741080976 *S
}
};
#undef S
static inline int mirror(int x, int w){
while((unsigned)x > (unsigned)w){
x=-x;
if(x<0) x+= 2*w;
}
return x;
}
static inline void decompose(float *dstL, float *dstH, float *src, int stride, int w){
int x, i;
for(x=0; x<w; x++){
double sumL= src[x*stride] * coeff[0][0];
double sumH= src[x*stride] * coeff[1][0];
for(i=1; i<=4; i++){
double s= (src[mirror(x-i, w-1)*stride] + src[mirror(x+i, w-1)*stride]);
sumL+= coeff[0][i]*s;
sumH+= coeff[1][i]*s;
}
dstL[x*stride]= sumL;
dstH[x*stride]= sumH;
}
}
static inline void compose(float *dst, float *srcL, float *srcH, int stride, int w){
int x, i;
for(x=0; x<w; x++){
double sumL= srcL[x*stride] * icoeff[0][0];
double sumH= srcH[x*stride] * icoeff[1][0];
for(i=1; i<=4; i++){
int x0= mirror(x-i, w-1)*stride;
int x1= mirror(x+i, w-1)*stride;
sumL+= icoeff[0][i]*(srcL[x0] + srcL[x1]);
sumH+= icoeff[1][i]*(srcH[x0] + srcH[x1]);
}
dst[x*stride]= (sumL + sumH)*0.5;
}
}
static inline void decompose2D(float *dstL, float *dstH, float *src, int xstride, int ystride, int step, int w, int h){
int y, x;
for(y=0; y<h; y++)
for(x=0; x<step; x++)
decompose(dstL + ystride*y + xstride*x, dstH + ystride*y + xstride*x, src + ystride*y + xstride*x, step*xstride, (w-x+step-1)/step);
}
static inline void compose2D(float *dst, float *srcL, float *srcH, int xstride, int ystride, int step, int w, int h){
int y, x;
for(y=0; y<h; y++)
for(x=0; x<step; x++)
compose(dst + ystride*y + xstride*x, srcL + ystride*y + xstride*x, srcH + ystride*y + xstride*x, step*xstride, (w-x+step-1)/step);
}
static void decompose2D2(float *dst[4], float *src, float *temp[2], int stride, int step, int w, int h){
decompose2D(temp[0], temp[1], src , 1, stride, step , w, h);
decompose2D( dst[0], dst[1], temp[0], stride, 1, step , h, w);
decompose2D( dst[2], dst[3], temp[1], stride, 1, step , h, w);
}
static void compose2D2(float *dst, float *src[4], float *temp[2], int stride, int step, int w, int h){
compose2D(temp[0], src[0], src[1], stride, 1, step , h, w);
compose2D(temp[1], src[2], src[3], stride, 1, step , h, w);
compose2D(dst , temp[0], temp[1], 1, stride, step , w, h);
}
static void filter(struct vf_priv_s *p, uint8_t *dst, uint8_t *src, int dst_stride, int src_stride, int width, int height, int is_luma){
int x,y, i, j;
// double sum=0;
double s= p->strength[!is_luma];
int depth= p->depth;
while(1<<depth > width || 1<<depth > height)
depth--;
for(y=0; y<height; y++)
for(x=0; x<width; x++)
p->plane[0][0][x + y*p->stride]= src[x + y*src_stride];
for(i=0; i<depth; i++){
decompose2D2(p->plane[i+1], p->plane[i][0], p->plane[0]+1,p->stride, 1<<i, width, height);
}
for(i=0; i<depth; i++){
for(j=1; j<4; j++){
for(y=0; y<height; y++){
for(x=0; x<width; x++){
double v= p->plane[i+1][j][x + y*p->stride];
if (v> s) v-=s;
else if(v<-s) v+=s;
else v =0;
p->plane[i+1][j][x + y*p->stride]= v;
}
}
}
}
for(i=depth-1; i>=0; i--){
compose2D2(p->plane[i][0], p->plane[i+1], p->plane[0]+1, p->stride, 1<<i, width, height);
}
for(y=0; y<height; y++)
for(x=0; x<width; x++){
i= p->plane[0][0][x + y*p->stride] + dither[x&7][y&7]*(1.0/64) + 1.0/128; //yes the rounding is insane but optimal :)
// double e= i - src[x + y*src_stride];
// sum += e*e;
if((unsigned)i > 255U) i= ~(i>>31);
dst[x + y*dst_stride]= i;
}
// printf("%f\n", sum/height/width);
}
static int config(struct vf_instance_s* vf, int width, int height, int d_width, int d_height, unsigned int flags, unsigned int outfmt){
int h= (height+15)&(~15);
int i,j;
vf->priv->stride= (width+15)&(~15);
for(j=0; j<4; j++){
for(i=0; i<=vf->priv->depth; i++)
vf->priv->plane[i][j]= malloc(vf->priv->stride*h*sizeof(vf->priv->plane[0][0][0]));
}
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
// ok, we can do pp in-place (or pp disabled):
vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags | MP_IMGFLAG_READABLE, mpi->width, mpi->height);
mpi->planes[0]=vf->dmpi->planes[0];
mpi->stride[0]=vf->dmpi->stride[0];
mpi->width=vf->dmpi->width;
if(mpi->flags&MP_IMGFLAG_PLANAR){
mpi->planes[1]=vf->dmpi->planes[1];
mpi->planes[2]=vf->dmpi->planes[2];
mpi->stride[1]=vf->dmpi->stride[1];
mpi->stride[2]=vf->dmpi->stride[2];
}
mpi->flags|=MP_IMGFLAG_DIRECT;
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
mp_image_t *dmpi;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
// no DR, so get a new image! hope we'll get DR buffer:
dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP,
MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
mpi->width,mpi->height);
vf_clone_mpi_attributes(dmpi, mpi);
}else{
dmpi=vf->dmpi;
}
filter(vf->priv, dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h, 1);
filter(vf->priv, dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, 0);
filter(vf->priv, dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift, 0);
return vf_next_put_image(vf,dmpi, pts);
}
static void uninit(struct vf_instance_s* vf){
int i,j;
if(!vf->priv) return;
for(j=0; j<4; j++){
for(i=0; i<16; i++){
free(vf->priv->plane[i][j]);
vf->priv->plane[i][j]= NULL;
}
}
free(vf->priv);
vf->priv=NULL;
}
//===========================================================================//
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
switch(fmt){
case IMGFMT_YVU9:
case IMGFMT_IF09:
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
case IMGFMT_CLPL:
case IMGFMT_Y800:
case IMGFMT_Y8:
case IMGFMT_444P:
case IMGFMT_422P:
case IMGFMT_411P:
return vf_next_query_format(vf,fmt);
}
return 0;
}
static int open(vf_instance_t *vf, char* args){
vf->config=config;
vf->put_image=put_image;
vf->get_image=get_image;
vf->query_format=query_format;
vf->uninit=uninit;
vf->priv=malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
vf->priv->depth= 8;
vf->priv->strength[0]= 1.0;
vf->priv->strength[1]= 1.0;
vf->priv->delta= 1.0;
if (args) sscanf(args, "%d:%f:%f:%d:%f", &vf->priv->depth,
&vf->priv->strength[0],
&vf->priv->strength[1],
&vf->priv->mode,
&vf->priv->delta);
return 1;
}
vf_info_t vf_info_ow = {
"overcomplete wavelet denoiser",
"ow",
"Michael Niedermayer",
"",
open,
NULL
};
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