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/*
* Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
*
* 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 <inttypes.h>
#include <assert.h>
#include <stdbool.h>
#include "mp_msg.h"
#include "libavutil/avutil.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libswscale/swscale.h"
#include "vf_scale.h"
//===========================================================================//
typedef struct FilterParam{
float radius;
float strength;
int threshold;
float quality;
struct SwsContext *filterContext;
}FilterParam;
struct vf_priv_s {
FilterParam luma;
FilterParam chroma;
};
/***************************************************************************/
static int allocStuff(FilterParam *f, int width, int height){
SwsVector *vec;
SwsFilter swsF;
vec = sws_getGaussianVec(f->radius, f->quality);
sws_scaleVec(vec, f->strength);
vec->coeff[vec->length/2]+= 1.0 - f->strength;
swsF.lumH= swsF.lumV= vec;
swsF.chrH= swsF.chrV= NULL;
f->filterContext= sws_getContext(
width, height, PIX_FMT_GRAY8, width, height, PIX_FMT_GRAY8, SWS_BICUBIC, &swsF, NULL, NULL);
sws_freeVec(vec);
return 0;
}
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
int sw, sh;
allocStuff(&vf->priv->luma, width, height);
mp_get_chroma_shift(outfmt, &sw, &sh, NULL);
allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static void freeBuffers(FilterParam *f){
if(f->filterContext) sws_freeContext(f->filterContext);
f->filterContext=NULL;
}
static void uninit(struct vf_instance *vf){
if(!vf->priv) return;
freeBuffers(&vf->priv->luma);
freeBuffers(&vf->priv->chroma);
free(vf->priv);
vf->priv=NULL;
}
static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
int x, y;
FilterParam f= *fp;
const uint8_t* const srcArray[MP_MAX_PLANES] = {src};
uint8_t *dstArray[MP_MAX_PLANES]= {dst};
int srcStrideArray[MP_MAX_PLANES]= {srcStride};
int dstStrideArray[MP_MAX_PLANES]= {dstStride};
sws_scale(f.filterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
if(f.threshold > 0){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
const int orig= src[x + y*srcStride];
const int filtered= dst[x + y*dstStride];
const int diff= orig - filtered;
if(diff > 0){
if(diff > 2*f.threshold){
dst[x + y*dstStride]= orig;
}else if(diff > f.threshold){
dst[x + y*dstStride]= filtered + diff - f.threshold;
}
}else{
if(-diff > 2*f.threshold){
dst[x + y*dstStride]= orig;
}else if(-diff > f.threshold){
dst[x + y*dstStride]= filtered + diff + f.threshold;
}
}
}
}
}else if(f.threshold < 0){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
const int orig= src[x + y*srcStride];
const int filtered= dst[x + y*dstStride];
const int diff= orig - filtered;
if(diff > 0){
if(diff > -2*f.threshold){
}else if(diff > -f.threshold){
dst[x + y*dstStride]= orig - diff - f.threshold;
}else
dst[x + y*dstStride]= orig;
}else{
if(diff < 2*f.threshold){
}else if(diff < f.threshold){
dst[x + y*dstStride]= orig - diff + f.threshold;
}else
dst[x + y*dstStride]= orig;
}
}
}
}
}
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
int cw= mpi->w >> mpi->chroma_x_shift;
int ch= mpi->h >> mpi->chroma_y_shift;
bool threshold = vf->priv->luma.threshold || vf->priv->chroma.threshold;
mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|
(threshold ? MP_IMGFLAG_READABLE : 0),
mpi->w,mpi->h);
assert(mpi->flags&MP_IMGFLAG_PLANAR);
blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
blur(dmpi->planes[1], mpi->planes[1], cw , ch , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
blur(dmpi->planes[2], mpi->planes[2], cw , ch , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
return vf_next_put_image(vf,dmpi, pts);
}
//===========================================================================//
static int query_format(struct vf_instance *vf, unsigned int fmt){
switch(fmt)
{
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
case IMGFMT_YVU9:
case IMGFMT_444P:
case IMGFMT_422P:
case IMGFMT_411P:
return vf_next_query_format(vf, fmt);
}
return 0;
}
static int vf_open(vf_instance_t *vf, char *args){
int e;
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));
if(args==NULL) return 0;
e=sscanf(args, "%f:%f:%d:%f:%f:%d",
&vf->priv->luma.radius,
&vf->priv->luma.strength,
&vf->priv->luma.threshold,
&vf->priv->chroma.radius,
&vf->priv->chroma.strength,
&vf->priv->chroma.threshold
);
vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
if(e==3){
vf->priv->chroma.radius= vf->priv->luma.radius;
vf->priv->chroma.strength= vf->priv->luma.strength;
vf->priv->chroma.threshold = vf->priv->luma.threshold;
}else if(e!=6)
return 0;
return 1;
}
const vf_info_t vf_info_smartblur = {
"smart blur",
"smartblur",
"Michael Niedermayer",
"",
vf_open,
NULL
};
//===========================================================================//
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