meandeinterlacer.cpp

来自「linux下实现视频播放的播放器」· C++ 代码 · 共 82 行

/*
 *  Copyright (C) 2005-2008  gulikoza, mtrooper
 *
 *  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/* $Id$ */

#include "MeanDeinterlacer.h"

//#define DEBUG
#include "log.h"

#define MODULE "BlendDeinterlacer"

MeanDeinterlacer::MeanDeinterlacer()
{
#ifdef HAVE_ALTIVEC_H
	if(SDL_HasAltiVec()) {
	    Merge = MergeAltivec;
	    EndMerge = NULL;
	    LOG_MSG("Using Altivec optimizations");
	} else
#endif
#if (C_HOSTCPU == X86) || (C_HOSTCPU == X86_64)
	if(SDL_HasSSE2()) {
	    Merge = MergeSSE2;
	    EndMerge = EndMMX;
	    LOG_MSG("Using SSE2 optimizations");
	} else
	if(SDL_HasSSE()) {
	    Merge = MergeMMXEXT;
	    EndMerge = EndMMX;
	    LOG_MSG("Using SSE optimizations");
	} else
	if(SDL_Has3DNow()) {
	    Merge = Merge3DNow;
	    EndMerge = End3DNow;
	    LOG_MSG("Using 3DNow optimizations");
	} else
#endif
	{
	    Merge = MergeGeneric;
	    EndMerge = NULL;
	}
}

void MeanDeinterlacer::Render(unsigned char * ptr[],  unsigned char * src[], deint * d)
{
    /* Copy image and skip lines */
    register int j = d->height>>1;
    register unsigned int k = 0;

    while(j--) {

	// Y
        Merge(ptr[2], src[2], src[2] + d->src_pitch[2], d->width);
        src[2] += d->src_pitch[2]<<1;
        ptr[2] += d->dst_pitch[2];

	// U & V
        Merge(ptr[k], src[k], src[k] + d->src_pitch[k], d->width>>1);
        src[k] += d->src_pitch[k]<<1;
        ptr[k] += d->dst_pitch[k];
        k = (k+1)&1;
    }

    if(EndMerge) EndMerge();
}