mirror of https://github.com/FFmpeg/FFmpeg.git
Stefano Sabatini
14 years ago
parent
8bc3a4807e
commit
4bd28579e5
5 changed files with 1 additions and 219 deletions
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/*
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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 "mp_msg.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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//===========================================================================//
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typedef struct FilterParam{ |
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int radius; |
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int power; |
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}FilterParam; |
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struct vf_priv_s { |
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FilterParam lumaParam; |
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FilterParam chromaParam; |
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}; |
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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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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt); |
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} |
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static inline void blur(uint8_t *dst, uint8_t *src, int w, int radius, int dstStep, int srcStep){ |
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int x; |
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const int length= radius*2 + 1; |
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const int inv= ((1<<16) + length/2)/length; |
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int sum= 0; |
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for(x=0; x<radius; x++){ |
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sum+= src[x*srcStep]<<1; |
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} |
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sum+= src[radius*srcStep]; |
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for(x=0; x<=radius; x++){ |
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sum+= src[(radius+x)*srcStep] - src[(radius-x)*srcStep]; |
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dst[x*dstStep]= (sum*inv + (1<<15))>>16; |
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} |
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for(; x<w-radius; x++){ |
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sum+= src[(radius+x)*srcStep] - src[(x-radius-1)*srcStep]; |
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dst[x*dstStep]= (sum*inv + (1<<15))>>16; |
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} |
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for(; x<w; x++){ |
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sum+= src[(2*w-radius-x-1)*srcStep] - src[(x-radius-1)*srcStep]; |
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dst[x*dstStep]= (sum*inv + (1<<15))>>16; |
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} |
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} |
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static inline void blur2(uint8_t *dst, uint8_t *src, int w, int radius, int power, int dstStep, int srcStep){ |
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uint8_t temp[2][4096]; |
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uint8_t *a= temp[0], *b=temp[1]; |
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if(radius){ |
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blur(a, src, w, radius, 1, srcStep); |
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for(; power>2; power--){ |
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uint8_t *c; |
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blur(b, a, w, radius, 1, 1); |
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c=a; a=b; b=c; |
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} |
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if(power>1) |
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blur(dst, a, w, radius, dstStep, 1); |
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else{ |
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int i; |
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for(i=0; i<w; i++) |
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dst[i*dstStep]= a[i]; |
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} |
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}else{ |
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int i; |
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for(i=0; i<w; i++) |
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dst[i*dstStep]= src[i*srcStep]; |
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} |
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} |
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static void hBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){ |
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int y; |
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if(radius==0 && dst==src) return; |
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for(y=0; y<h; y++){ |
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blur2(dst + y*dstStride, src + y*srcStride, w, radius, power, 1, 1); |
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} |
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} |
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//FIXME optimize (x before y !!!)
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static void vBlur(uint8_t *dst, uint8_t *src, int w, int h, int dstStride, int srcStride, int radius, int power){ |
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int x; |
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if(radius==0 && dst==src) return; |
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for(x=0; x<w; x++){ |
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blur2(dst + x, src + x, h, radius, power, dstStride, srcStride); |
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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 | MP_IMGFLAG_READABLE, |
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mpi->w,mpi->h); |
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assert(mpi->flags&MP_IMGFLAG_PLANAR); |
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hBlur(dmpi->planes[0], mpi->planes[0], mpi->w,mpi->h, |
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dmpi->stride[0], mpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power); |
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hBlur(dmpi->planes[1], mpi->planes[1], cw,ch, |
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dmpi->stride[1], mpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power); |
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hBlur(dmpi->planes[2], mpi->planes[2], cw,ch, |
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dmpi->stride[2], mpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power); |
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vBlur(dmpi->planes[0], dmpi->planes[0], mpi->w,mpi->h, |
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dmpi->stride[0], dmpi->stride[0], vf->priv->lumaParam.radius, vf->priv->lumaParam.power); |
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vBlur(dmpi->planes[1], dmpi->planes[1], cw,ch, |
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dmpi->stride[1], dmpi->stride[1], vf->priv->chromaParam.radius, vf->priv->chromaParam.power); |
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vBlur(dmpi->planes[2], dmpi->planes[2], cw,ch, |
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dmpi->stride[2], dmpi->stride[2], vf->priv->chromaParam.radius, vf->priv->chromaParam.power); |
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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->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, "%d:%d:%d:%d", |
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&vf->priv->lumaParam.radius, |
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&vf->priv->lumaParam.power, |
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&vf->priv->chromaParam.radius, |
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&vf->priv->chromaParam.power |
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); |
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if(e==2){ |
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vf->priv->chromaParam.radius= vf->priv->lumaParam.radius; |
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vf->priv->chromaParam.power = vf->priv->lumaParam.power; |
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}else if(e!=4) |
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return 0; |
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if(vf->priv->lumaParam.radius < 0) return 0; |
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if(vf->priv->chromaParam.radius < 0) return 0; |
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return 1; |
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} |
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const vf_info_t vf_info_boxblur = { |
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"box blur", |
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"boxblur", |
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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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