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/**
* This file contains code from ffmpeg, see http://ffmpeg.org/
*
* Originated in imgconvert.c: Misc image convertion routines
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
*
* tvtime port Copyright (C) 2003 Billy Biggs <vektor@dumbterm.net>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#if HAVE_INTTYPES_H
#include <inttypes.h>
#else
#include <stdint.h>
#endif
#include <xine/attributes.h>
#include <xine/xineutils.h>
#include "xine_mmx.h"
#include "speedy.h"
#include "deinterlace.h"
#include "plugins.h"
/**
* The MPEG2 spec uses a slightly harsher filter, they specify
* [-1 8 2 8 -1]. ffmpeg uses a similar filter but with more of
* a tendancy to blur than to use the local information. The
* filter taps here are: [-1 4 2 4 -1].
*/
static void deinterlace_line( uint8_t *dst, uint8_t *lum_m4,
uint8_t *lum_m3, uint8_t *lum_m2,
uint8_t *lum_m1, uint8_t *lum, int size )
{
#if defined(ARCH_X86) || defined(ARCH_X86_64)
mmx_t rounder;
rounder.uw[0]=4;
rounder.uw[1]=4;
rounder.uw[2]=4;
rounder.uw[3]=4;
pxor_r2r(mm7,mm7);
movq_m2r(rounder,mm6);
for (;size > 3; size-=4) {
movd_m2r(lum_m4[0],mm0);
movd_m2r(lum_m3[0],mm1);
movd_m2r(lum_m2[0],mm2);
movd_m2r(lum_m1[0],mm3);
movd_m2r(lum[0],mm4);
punpcklbw_r2r(mm7,mm0);
punpcklbw_r2r(mm7,mm1);
punpcklbw_r2r(mm7,mm2);
punpcklbw_r2r(mm7,mm3);
punpcklbw_r2r(mm7,mm4);
paddw_r2r(mm3,mm1);
psllw_i2r(1,mm2);
paddw_r2r(mm4,mm0);
psllw_i2r(2,mm1);// 2
paddw_r2r(mm6,mm2);
paddw_r2r(mm2,mm1);
psubusw_r2r(mm0,mm1);
psrlw_i2r(3,mm1); // 3
packuswb_r2r(mm7,mm1);
movd_r2m(mm1,dst[0]);
lum_m4+=4;
lum_m3+=4;
lum_m2+=4;
lum_m1+=4;
lum+=4;
dst+=4;
}
emms();
#else
/**
* C implementation.
*/
int sum;
for(;size > 0;size--) {
sum = -lum_m4[0];
sum += lum_m3[0] << 2;
sum += lum_m2[0] << 1;
sum += lum_m1[0] << 2;
sum += -lum[0];
dst[0] = (sum + 4) >> 3; // This needs to be clipped at 0 and 255: cm[(sum + 4) >> 3];
lum_m4++;
lum_m3++;
lum_m2++;
lum_m1++;
lum++;
dst++;
}
#endif
}
static void deinterlace_scanline_vfir( uint8_t *output,
deinterlace_scanline_data_t *data,
int width )
{
deinterlace_line( output, data->tt1, data->t0, data->m1, data->b0, data->bb1, width*2 );
}
static void copy_scanline( uint8_t *output,
deinterlace_scanline_data_t *data,
int width )
{
blit_packed422_scanline( output, data->m0, width );
}
static deinterlace_method_t vfirmethod =
{
"Vertical Blend (ffmpeg)",
"Vertical",
/*
"Blur: Vertical",
"BlurVertical",
*/
1,
#if defined(ARCH_X86) || defined(ARCH_X86_64)
MM_ACCEL_X86_MMXEXT,
#else
0,
#endif
0,
1,
deinterlace_scanline_vfir,
copy_scanline,
0,
0,
"Avoids flicker by blurring consecutive frames of input. Use this if you "
"want to run your monitor at an arbitrary refresh rate and not use much "
"CPU, and are willing to sacrifice detail.\n"
"\n"
"Vertical mode blurs favouring the most recent field for less visible "
"trails. From the deinterlacer filter in ffmpeg."
};
deinterlace_method_t *vfir_get_method( void )
{
return &vfirmethod;
}
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