t3x3blur.cpp

从FFMPEG转换而来的H264解码程序,VC下编译..

/*
 * Copyright (c) 2002-2006 Milan Cutka
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "stdafx.h"
#include "T3x3blur.h"
#include "Tlibmplayer.h"
#include "postproc/swscale.h"
#include "ffImgfmt.h"
#include "Tconfig.h"
#include "TffPict.h"
#include "IffdshowBase.h"

T3x3blurSWS::T3x3blurSWS(IffdshowBase *deci,unsigned int Idx,unsigned int Idy):dx(Idx),dy(Idy)
{
 deci->getPostproc(&libmplayer);
 SwsFilter swsf;
 swsf.lumV=swsf.lumH=libmplayer->sws_getConstVec(1/3.0,3);
 swsf.chrH=swsf.chrV=NULL;
 SwsParams params;Tlibmplayer::swsInitParams(&params,0);
 swsc=libmplayer->sws_getContext(dx,dy,IMGFMT_Y800,dx,dy,IMGFMT_Y800,&params,&swsf,NULL);
 libmplayer->sws_freeVec(swsf.lumH);
}
T3x3blurSWS::~T3x3blurSWS()
{
 if (swsc) libmplayer->sws_freeContext(swsc);
 libmplayer->Release();
}
void T3x3blurSWS::process(const unsigned char *src,stride_t srcStride,unsigned char *dst,stride_t dstStride)
{
 if (swsc)
  libmplayer->sws_scale_ordered(swsc,&src,&srcStride,0,dy,&dst,&dstStride);
 else
  TffPict::copy(dst,dstStride,src,srcStride,dx,dy);
}