2 * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of MPlayer.
6 * MPlayer is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * MPlayer is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 #include "libavutil/avutil.h"
29 #include "img_format.h"
32 #include "libswscale/swscale.h"
35 //===========================================================================//
37 typedef struct FilterParam{
42 struct SwsContext *filterContext;
51 /***************************************************************************/
53 //FIXME stupid code duplication
54 static void getSubSampleFactors(int *h, int *v, int format){
82 static int allocStuff(FilterParam *f, int width, int height){
86 vec = sws_getGaussianVec(f->radius, f->quality);
87 sws_scaleVec(vec, f->strength);
88 vec->coeff[vec->length/2]+= 1.0 - f->strength;
89 swsF.lumH= swsF.lumV= vec;
90 swsF.chrH= swsF.chrV= NULL;
91 f->filterContext= sws_getContext(
92 width, height, PIX_FMT_GRAY8, width, height, PIX_FMT_GRAY8, SWS_BICUBIC, &swsF, NULL, NULL);
99 static int config(struct vf_instance *vf,
100 int width, int height, int d_width, int d_height,
101 unsigned int flags, unsigned int outfmt){
105 allocStuff(&vf->priv->luma, width, height);
107 getSubSampleFactors(&sw, &sh, outfmt);
108 allocStuff(&vf->priv->chroma, width>>sw, height>>sh);
110 return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
113 static void freeBuffers(FilterParam *f){
114 if(f->filterContext) sws_freeContext(f->filterContext);
115 f->filterContext=NULL;
118 static void uninit(struct vf_instance *vf){
119 if(!vf->priv) return;
121 freeBuffers(&vf->priv->luma);
122 freeBuffers(&vf->priv->chroma);
128 static inline void blur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, FilterParam *fp){
131 const uint8_t* const srcArray[MP_MAX_PLANES] = {src};
132 uint8_t *dstArray[MP_MAX_PLANES]= {dst};
133 int srcStrideArray[MP_MAX_PLANES]= {srcStride};
134 int dstStrideArray[MP_MAX_PLANES]= {dstStride};
136 sws_scale(f.filterContext, srcArray, srcStrideArray, 0, h, dstArray, dstStrideArray);
141 const int orig= src[x + y*srcStride];
142 const int filtered= dst[x + y*dstStride];
143 const int diff= orig - filtered;
146 if(diff > 2*f.threshold){
147 dst[x + y*dstStride]= orig;
148 }else if(diff > f.threshold){
149 dst[x + y*dstStride]= filtered + diff - f.threshold;
152 if(-diff > 2*f.threshold){
153 dst[x + y*dstStride]= orig;
154 }else if(-diff > f.threshold){
155 dst[x + y*dstStride]= filtered + diff + f.threshold;
160 }else if(f.threshold < 0){
163 const int orig= src[x + y*srcStride];
164 const int filtered= dst[x + y*dstStride];
165 const int diff= orig - filtered;
168 if(diff > -2*f.threshold){
169 }else if(diff > -f.threshold){
170 dst[x + y*dstStride]= orig - diff - f.threshold;
172 dst[x + y*dstStride]= orig;
174 if(diff < 2*f.threshold){
175 }else if(diff < f.threshold){
176 dst[x + y*dstStride]= orig - diff + f.threshold;
178 dst[x + y*dstStride]= orig;
185 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
186 int cw= mpi->w >> mpi->chroma_x_shift;
187 int ch= mpi->h >> mpi->chroma_y_shift;
188 int threshold = vf->priv->luma.threshold || vf->priv->chroma.threshold;
190 mp_image_t *dmpi=vf_get_image(vf->next,mpi->imgfmt,
191 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE|
192 (threshold ? MP_IMGFLAG_READABLE : 0),
195 assert(mpi->flags&MP_IMGFLAG_PLANAR);
197 blur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, dmpi->stride[0], mpi->stride[0], &vf->priv->luma);
198 blur(dmpi->planes[1], mpi->planes[1], cw , ch , dmpi->stride[1], mpi->stride[1], &vf->priv->chroma);
199 blur(dmpi->planes[2], mpi->planes[2], cw , ch , dmpi->stride[2], mpi->stride[2], &vf->priv->chroma);
201 return vf_next_put_image(vf,dmpi, pts);
204 //===========================================================================//
206 static int query_format(struct vf_instance *vf, unsigned int fmt){
216 return vf_next_query_format(vf, fmt);
221 static int vf_open(vf_instance_t *vf, char *args){
225 vf->put_image=put_image;
226 // vf->get_image=get_image;
227 vf->query_format=query_format;
229 vf->priv=malloc(sizeof(struct vf_priv_s));
230 memset(vf->priv, 0, sizeof(struct vf_priv_s));
232 if(args==NULL) return 0;
234 e=sscanf(args, "%f:%f:%d:%f:%f:%d",
235 &vf->priv->luma.radius,
236 &vf->priv->luma.strength,
237 &vf->priv->luma.threshold,
238 &vf->priv->chroma.radius,
239 &vf->priv->chroma.strength,
240 &vf->priv->chroma.threshold
243 vf->priv->luma.quality = vf->priv->chroma.quality= 3.0;
246 vf->priv->chroma.radius= vf->priv->luma.radius;
247 vf->priv->chroma.strength= vf->priv->luma.strength;
248 vf->priv->chroma.threshold = vf->priv->luma.threshold;
255 const vf_info_t vf_info_smartblur = {
258 "Michael Niedermayer",
264 //===========================================================================//