mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-17 14:55:06 +02:00
324 lines
9.1 KiB
C
324 lines
9.1 KiB
C
/*
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* Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of MPlayer.
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*
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* MPlayer 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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*
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* MPlayer 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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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, 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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#if HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#include "libavutil/avutil.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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#include "libswscale/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 preFilterRadius;
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float strength;
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float quality;
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struct SwsContext *preFilterContext;
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uint8_t *preFilterBuf;
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int preFilterStride;
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int distWidth;
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int distStride;
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int *distCoeff;
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int colorDiffCoeff[512];
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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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default:
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assert(0);
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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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int stride= (width+7)&~7;
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SwsVector *vec;
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SwsFilter swsF;
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int i,x,y;
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f->preFilterBuf= av_malloc(stride*height);
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f->preFilterStride= stride;
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vec = sws_getGaussianVec(f->preFilterRadius, f->quality);
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swsF.lumH= swsF.lumV= vec;
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swsF.chrH= swsF.chrV= NULL;
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f->preFilterContext= sws_getContext(
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width, height, PIX_FMT_GRAY8, width, height, PIX_FMT_GRAY8, SWS_POINT, &swsF, NULL, NULL);
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sws_freeVec(vec);
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vec = sws_getGaussianVec(f->strength, 5.0);
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for(i=0; i<512; i++){
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double d;
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int index= i-256 + vec->length/2;
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if(index<0 || index>=vec->length) d= 0.0;
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else d= vec->coeff[index];
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f->colorDiffCoeff[i]= (int)(d/vec->coeff[vec->length/2]*(1<<12) + 0.5);
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}
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sws_freeVec(vec);
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vec = sws_getGaussianVec(f->radius, f->quality);
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f->distWidth= vec->length;
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f->distStride= (vec->length+7)&~7;
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f->distCoeff= av_malloc(f->distWidth*f->distStride*sizeof(int32_t));
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for(y=0; y<vec->length; y++){
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for(x=0; x<vec->length; x++){
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double d= vec->coeff[x] * vec->coeff[y];
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f->distCoeff[x + y*f->distStride]= (int)(d*(1<<10) + 0.5);
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// if(y==vec->length/2)
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// printf("%6d ", f->distCoeff[x + y*f->distStride]);
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}
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}
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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 *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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//__asm__ volatile("emms\n\t");
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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->preFilterContext) sws_freeContext(f->preFilterContext);
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f->preFilterContext=NULL;
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av_free(f->preFilterBuf);
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f->preFilterBuf=NULL;
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av_free(f->distCoeff);
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f->distCoeff=NULL;
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}
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static void uninit(struct vf_instance *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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const int radius= f.distWidth/2;
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const uint8_t* const srcArray[MP_MAX_PLANES] = {src};
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uint8_t *dstArray[MP_MAX_PLANES]= {f.preFilterBuf};
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int srcStrideArray[MP_MAX_PLANES]= {srcStride};
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int dstStrideArray[MP_MAX_PLANES]= {f.preFilterStride};
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// f.preFilterContext->swScale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
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sws_scale(f.preFilterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
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for(y=0; y<h; y++){
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for(x=0; x<w; x++){
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int sum=0;
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int div=0;
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int dy;
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const int preVal= f.preFilterBuf[x + y*f.preFilterStride];
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#if 0
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const int srcVal= src[x + y*srcStride];
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if((x/32)&1){
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dst[x + y*dstStride]= srcVal;
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if(y%32==0) dst[x + y*dstStride]= 0;
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continue;
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}
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#endif
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if(x >= radius && x < w - radius){
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for(dy=0; dy<radius*2+1; dy++){
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int dx;
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int iy= y+dy - radius;
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if (iy<0) iy= -iy;
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else if(iy>=h) iy= h+h-iy-1;
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for(dx=0; dx<radius*2+1; dx++){
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const int ix= x+dx - radius;
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int factor;
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factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
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*f.distCoeff[dx + dy*f.distStride];
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sum+= src[ix + iy*srcStride] *factor;
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div+= factor;
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}
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}
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}else{
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for(dy=0; dy<radius*2+1; dy++){
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int dx;
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int iy= y+dy - radius;
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if (iy<0) iy= -iy;
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else if(iy>=h) iy= h+h-iy-1;
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for(dx=0; dx<radius*2+1; dx++){
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int ix= x+dx - radius;
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int factor;
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if (ix<0) ix= -ix;
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else if(ix>=w) ix= w+w-ix-1;
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factor= f.colorDiffCoeff[256+preVal - f.preFilterBuf[ix + iy*f.preFilterStride] ]
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*f.distCoeff[dx + dy*f.distStride];
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sum+= src[ix + iy*srcStride] *factor;
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div+= factor;
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}
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}
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}
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dst[x + y*dstStride]= (sum + div/2)/div;
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}
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}
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}
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static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
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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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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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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, pts);
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}
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//===========================================================================//
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static int query_format(struct vf_instance *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 vf_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:%f:%f:%f:%f",
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&vf->priv->luma.radius,
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&vf->priv->luma.preFilterRadius,
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&vf->priv->luma.strength,
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&vf->priv->chroma.radius,
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&vf->priv->chroma.preFilterRadius,
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&vf->priv->chroma.strength
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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.preFilterRadius = vf->priv->luma.preFilterRadius;
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vf->priv->chroma.strength= vf->priv->luma.strength;
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}else if(e!=6)
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return 0;
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// if(vf->priv->luma.radius < 0) return 0;
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// if(vf->priv->chroma.radius < 0) return 0;
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return 1;
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}
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const vf_info_t vf_info_sab = {
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"shape adaptive blur",
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"sab",
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"Michael Niedermayer",
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"",
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vf_open,
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NULL
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};
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//===========================================================================//
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