mirror of https://github.com/mpv-player/mpv
267 lines
6.5 KiB
C
267 lines
6.5 KiB
C
/*
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Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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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 <inttypes.h>
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#include <assert.h>
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#include "config.h"
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#include "mp_msg.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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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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#include "libvo/fastmemcpy.h"
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#include "postproc/swscale.h"
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#include "vf_scale.h"
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//===========================================================================//
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typedef struct FilterParam{
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float radius;
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float strength;
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int threshold;
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float quality;
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struct SwsContext *filterContext;
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}FilterParam;
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struct vf_priv_s {
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FilterParam luma;
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FilterParam chroma;
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};
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/***************************************************************************/
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//FIXME stupid code duplication
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static void getSubSampleFactors(int *h, int *v, int format){
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switch(format){
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case IMGFMT_YV12:
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case IMGFMT_I420:
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*h=1;
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*v=1;
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break;
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case IMGFMT_YVU9:
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*h=2;
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*v=2;
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break;
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case IMGFMT_444P:
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*h=0;
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*v=0;
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break;
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case IMGFMT_422P:
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*h=1;
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*v=0;
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break;
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case IMGFMT_411P:
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*h=2;
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*v=0;
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break;
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}
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}
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static int allocStuff(FilterParam *f, int width, int height){
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SwsVector *vec;
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SwsFilter swsF;
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vec = sws_getGaussianVec(f->radius, f->quality);
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sws_scaleVec(vec, f->strength);
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vec->coeff[vec->length/2]+= 1.0 - f->strength;
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swsF.lumH= swsF.lumV= vec;
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swsF.chrH= swsF.chrV= NULL;
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f->filterContext= sws_getContext(
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width, height, IMGFMT_Y8, width, height, IMGFMT_Y8, get_sws_cpuflags(), &swsF, NULL, NULL);
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sws_freeVec(vec);
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return 0;
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}
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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int sw, sh;
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allocStuff(&vf->priv->luma, width, height);
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getSubSampleFactors(&sw, &sh, outfmt);
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allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static void freeBuffers(FilterParam *f){
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if(f->filterContext) sws_freeContext(f->filterContext);
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f->filterContext=NULL;
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}
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static void uninit(struct vf_instance_s* vf){
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if(!vf->priv) return;
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freeBuffers(&vf->priv->luma);
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freeBuffers(&vf->priv->chroma);
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free(vf->priv);
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vf->priv=NULL;
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}
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static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
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int x, y;
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FilterParam f= *fp;
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uint8_t *srcArray[3]= {src, NULL, NULL};
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uint8_t *dstArray[3]= {dst, NULL, NULL};
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int srcStrideArray[3]= {srcStride, 0, 0};
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int dstStrideArray[3]= {dstStride, 0, 0};
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sws_scale(f.filterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
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if(f.threshold > 0){
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for(y=0; y<h; y++){
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for(x=0; x<w; x++){
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const int orig= src[x + y*srcStride];
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const int filtered= dst[x + y*dstStride];
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const int diff= orig - filtered;
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if(diff > 0){
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if(diff > 2*f.threshold){
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dst[x + y*dstStride]= orig;
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}else if(diff > f.threshold){
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dst[x + y*dstStride]= filtered + diff - f.threshold;
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}
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}else{
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if(-diff > 2*f.threshold){
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dst[x + y*dstStride]= orig;
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}else if(-diff > f.threshold){
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dst[x + y*dstStride]= filtered + diff + f.threshold;
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}
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}
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}
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}
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}else if(f.threshold < 0){
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for(y=0; y<h; y++){
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for(x=0; x<w; x++){
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const int orig= src[x + y*srcStride];
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const int filtered= dst[x + y*dstStride];
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const int diff= orig - filtered;
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if(diff > 0){
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if(diff > -2*f.threshold){
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}else if(diff > -f.threshold){
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dst[x + y*dstStride]= orig - diff - f.threshold;
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}else
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dst[x + y*dstStride]= orig;
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}else{
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if(diff < 2*f.threshold){
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}else if(diff < f.threshold){
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dst[x + y*dstStride]= orig - diff + f.threshold;
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}else
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dst[x + y*dstStride]= orig;
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}
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}
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}
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}
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
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int cw= mpi->w >> mpi->chroma_x_shift;
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int ch= mpi->h >> mpi->chroma_y_shift;
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FilterParam *f= &vf->priv;
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mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|
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(f->threshold) ? MP_IMGFLAG_READABLE : 0,
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mpi->w,mpi->h);
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assert(mpi->flags&MP_IMGFLAG_PLANAR);
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blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
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blur(dmpi->planes[1], mpi->planes[1], cw , ch , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
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blur(dmpi->planes[2], mpi->planes[2], cw , ch , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
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return vf_next_put_image(vf,dmpi);
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}
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//===========================================================================//
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static int query_format(struct vf_instance_s* vf, unsigned int fmt){
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switch(fmt)
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{
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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_YVU9:
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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 int open(vf_instance_t *vf, char* args){
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int e;
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vf->config=config;
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vf->put_image=put_image;
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// vf->get_image=get_image;
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vf->query_format=query_format;
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vf->uninit=uninit;
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vf->priv=malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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if(args==NULL) return 0;
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e=sscanf(args, "%f:%f:%d:%f:%f:%d",
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&vf->priv->luma.radius,
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&vf->priv->luma.strength,
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&vf->priv->luma.threshold,
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&vf->priv->chroma.radius,
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&vf->priv->chroma.strength,
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&vf->priv->chroma.threshold
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);
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vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
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if(e==3){
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vf->priv->chroma.radius= vf->priv->luma.radius;
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vf->priv->chroma.strength= vf->priv->luma.strength;
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vf->priv->chroma.threshold = vf->priv->luma.threshold;
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}else if(e!=6)
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return 0;
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return 1;
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}
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vf_info_t vf_info_smartblur = {
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"smart blur",
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"smartblur",
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"Michael Niedermayer",
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"",
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open,
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NULL
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};
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//===========================================================================//
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