mirror of
https://github.com/mpv-player/mpv
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![michael](/assets/img/avatar_default.png)
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18626 b3059339-0415-0410-9bf9-f77b7e298cf2
236 lines
7.4 KiB
C
236 lines
7.4 KiB
C
/*
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Copyright (C) 2006 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 <math.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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#define MIN(a,b) ((a) > (b) ? (b) : (a))
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#define MAX(a,b) ((a) < (b) ? (b) : (a))
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#define ABS(a) ((a) > 0 ? (a) : (-(a)))
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#define MIN3(a,b,c) MIN(MIN(a,b),c)
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#define MAX3(a,b,c) MAX(MAX(a,b),c)
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//===========================================================================//
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struct vf_priv_s {
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int mode;
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int parity;
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int stride[3];
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uint8_t *ref[4][3];
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};
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static void store_ref(struct vf_priv_s *p, uint8_t *src[3], int src_stride[3], int width, int height){
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int i;
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memcpy (p->ref[3], p->ref[0], sizeof(uint8_t *)*3);
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memmove(p->ref[0], p->ref[1], sizeof(uint8_t *)*3*3);
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for(i=0; i<3; i++){
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int is_chroma= !!i;
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memcpy_pic(p->ref[2][i], src[i], width>>is_chroma, height>>is_chroma, p->stride[i], src_stride[i]);
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}
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}
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static void filter(struct vf_priv_s *p, uint8_t *dst[3], int dst_stride[3], int width, int height, int parity, int tff){
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int x, y, i, j;
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for(i=0; i<3; i++){
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int is_chroma= !!i;
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int w= width >>is_chroma;
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int h= height>>is_chroma;
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int refs= p->stride[i];
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for(y=0; y<h; y++){
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if((y ^ parity) & 1){
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for(x=0; x<w; x++){
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uint8_t *prev= &p->ref[0][i][x + y*refs];
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uint8_t *cur = &p->ref[1][i][x + y*refs];
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uint8_t *next= &p->ref[2][i][x + y*refs];
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uint8_t *prev2= (tff ^ parity) ? prev : cur ;
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uint8_t *next2= (tff ^ parity) ? cur : next;
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int c= cur[-refs];
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int d= (prev2[0] + next2[0])>>1;
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int e= cur[+refs];
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int temporal_diff0= ABS(prev2[0] - next2[0]);
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int temporal_diff1=( ABS(prev[-refs] - c) + ABS(prev[+refs] - e) )>>1;
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int temporal_diff2=( ABS(next[-refs] - c) + ABS(next[+refs] - e) )>>1;
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int diff= MAX3(temporal_diff0>>1, temporal_diff1, temporal_diff2);
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int spatial_pred= (c+e)>>1;
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int spatial_score= ABS(cur[-refs-1] - cur[+refs-1]) + ABS(c-e)
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+ ABS(cur[-refs+1] - cur[+refs+1]);
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for(j=-1; j<=1; j+=2){
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int score= ABS(cur[-refs-1+j] - cur[+refs-1-j])
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+ ABS(cur[-refs +j] - cur[+refs -j])
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+ ABS(cur[-refs+1+j] - cur[+refs+1-j]) + 1;
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if(score < spatial_score){
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spatial_score= score;
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spatial_pred= (cur[-refs +j] + cur[+refs -j])>>1;
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}
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}
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{
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int b= (prev2[-2*refs] + next2[-2*refs])>>1;
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int f= (prev2[+2*refs] + next2[+2*refs])>>1;
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#if 0
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int a= cur[-3*refs];
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int g= cur[+3*refs];
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int max= MAX3(d-e, d-c, MIN3(MAX(b-c,f-e),MAX(b-c,b-a),MAX(f-g,f-e)) );
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int min= MIN3(d-e, d-c, MAX3(MIN(b-c,f-e),MIN(b-c,b-a),MIN(f-g,f-e)) );
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#else
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int max= MAX3(d-e, d-c, MIN(b-c, f-e));
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int min= MIN3(d-e, d-c, MAX(b-c, f-e));
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#endif
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diff= MAX3(diff, min, -max);
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}
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if(d < spatial_pred) d= MIN(d + diff, spatial_pred);
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else d= MAX(d - diff, spatial_pred);
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dst[i][x + y*dst_stride[i]]= d;
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}
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}else{
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memcpy(&dst[i][y*dst_stride[i]], &p->ref[1][i][y*refs], w);
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}
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}
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}
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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 i, j;
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for(i=0; i<3; i++){
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int is_chroma= !!i;
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int w= ((width + 31) & (~31))>>is_chroma;
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int h= ((height+6+ 31) & (~31))>>is_chroma;
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vf->priv->stride[i]= w;
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for(j=0; j<3; j++)
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vf->priv->ref[j][i]= malloc(w*h*sizeof(uint8_t))+3*w;
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}
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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 int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
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mp_image_t *dmpi;
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int ret=0;
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int tff, i;
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if(vf->priv->parity < 0) {
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if (mpi->fields & MP_IMGFIELD_ORDERED)
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tff = !!(mpi->fields & MP_IMGFIELD_TOP_FIRST);
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else
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tff = 1;
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}
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else tff = (vf->priv->parity&1)^1;
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store_ref(vf->priv, mpi->planes, mpi->stride, mpi->w, mpi->h);
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for(i=0; i<=vf->priv->mode; i++){
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dmpi=vf_get_image(vf->next,mpi->imgfmt,
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MP_IMGTYPE_TEMP,
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MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
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mpi->width,mpi->height);
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vf_clone_mpi_attributes(dmpi, mpi);
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filter(vf->priv, dmpi->planes, dmpi->stride, mpi->w, mpi->h, i ^ tff ^ 1, tff);
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ret |= vf_next_put_image(vf, dmpi, pts /*FIXME*/);
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if(i<vf->priv->mode)
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vf_next_control(vf, VFCTRL_FLIP_PAGE, NULL);
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}
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return ret;
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}
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static void uninit(struct vf_instance_s* vf){
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int i;
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if(!vf->priv) return;
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for(i=0; i<3*3; i++){
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uint8_t **p= &vf->priv->ref[i%3][i/3];
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if(*p) free(*p - 3*vf->priv->stride[i/3]);
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*p= NULL;
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}
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free(vf->priv);
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vf->priv=NULL;
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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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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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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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vf->config=config;
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vf->put_image=put_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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vf->priv->mode=0;
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vf->priv->parity= -1;
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if (args) sscanf(args, "%d:%d", &vf->priv->mode, &vf->priv->parity);
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if(vf->priv->mode < 0 || vf->priv->mode > 1)
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vf->priv->mode=0;
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return 1;
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}
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vf_info_t vf_info_yadif = {
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"Yet Another DeInterlacing Filter",
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"yadif",
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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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