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vlc/modules/video_filter/deinterlace/algo_basic.c
Rémi Denis-Courmont e539c5ce08 config.h MUST ALWAYS BE INCLUDED _FIRST_! Fix Windows warnings. 
How many times does this have to be spelt?!
2011-05-07 19:44:19 +03:00

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/*****************************************************************************
* algo_basic.c : Basic algorithms for the VLC deinterlacer
*****************************************************************************
* Copyright (C) 2000-2011 the VideoLAN team
* $Id$
*
* Author: Sam Hocevar <sam@zoy.org>
* Damien Lucas <nitrox@videolan.org> (Bob, Blend)
* Laurent Aimar <fenrir@videolan.org> (Bob, Blend)
*
* 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 Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdint.h>
#include <vlc_common.h>
#include <vlc_picture.h>
#include <vlc_filter.h>
#include "merge.h"
#include "deinterlace.h" /* definition of p_sys, needed for Merge() */
#include "algo_basic.h"
/*****************************************************************************
* RenderDiscard: only keep TOP or BOTTOM field, discard the other.
*****************************************************************************/
void RenderDiscard( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic, int i_field )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
int i_increment;
p_in = p_pic->p[i_plane].p_pixels
+ i_field * p_pic->p[i_plane].i_pitch;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
switch( p_filter->fmt_in.video.i_chroma )
{
case VLC_CODEC_I420:
case VLC_CODEC_J420:
case VLC_CODEC_YV12:
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2 * p_pic->p[i_plane].i_pitch;
}
break;
case VLC_CODEC_I422:
case VLC_CODEC_J422:
i_increment = 2 * p_pic->p[i_plane].i_pitch;
if( i_plane == Y_PLANE )
{
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += i_increment;
}
}
else
{
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += i_increment;
}
}
break;
default:
break;
}
}
}
/*****************************************************************************
* RenderBob: renders a BOB picture - simple copy
*****************************************************************************/
void RenderBob( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic, int i_field )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
switch( p_filter->fmt_in.video.i_chroma )
{
case VLC_CODEC_I420:
case VLC_CODEC_J420:
case VLC_CODEC_YV12:
/* For BOTTOM field we need to add the first line */
if( i_field == 1 )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
p_out_end -= 2 * p_outpic->p[i_plane].i_pitch;
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += 2 * p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
/* For TOP field we need to add the last line */
if( i_field == 0 )
{
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
}
break;
case VLC_CODEC_I422:
case VLC_CODEC_J422:
/* For BOTTOM field we need to add the first line */
if( i_field == 1 )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
p_out_end -= 2 * p_outpic->p[i_plane].i_pitch;
if( i_plane == Y_PLANE )
{
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += 2 * p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
}
else
{
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2 * p_pic->p[i_plane].i_pitch;
}
}
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
/* For TOP field we need to add the last line */
if( i_field == 0 )
{
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
}
break;
}
}
}
/*****************************************************************************
* RenderLinear: BOB with linear interpolation
*****************************************************************************/
void RenderLinear( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic, int i_field )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
/* For BOTTOM field we need to add the first line */
if( i_field == 1 )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
p_out_end -= 2 * p_outpic->p[i_plane].i_pitch;
for( ; p_out < p_out_end ; )
{
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
Merge( p_out, p_in, p_in + 2 * p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_in += 2 * p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
}
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
/* For TOP field we need to add the last line */
if( i_field == 0 )
{
p_in += p_pic->p[i_plane].i_pitch;
p_out += p_outpic->p[i_plane].i_pitch;
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
}
}
EndMerge();
}
/*****************************************************************************
* RenderMean: Half-resolution blender
*****************************************************************************/
void RenderMean( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
/* All lines: mean value */
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2 * p_pic->p[i_plane].i_pitch;
}
}
EndMerge();
}
/*****************************************************************************
* RenderBlend: Full-resolution blender
*****************************************************************************/
void RenderBlend( filter_t *p_filter,
picture_t *p_outpic, picture_t *p_pic )
{
int i_plane;
/* Copy image and skip lines */
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_out_end, *p_out;
p_in = p_pic->p[i_plane].p_pixels;
p_out = p_outpic->p[i_plane].p_pixels;
p_out_end = p_out + p_outpic->p[i_plane].i_pitch
* p_outpic->p[i_plane].i_visible_lines;
switch( p_filter->fmt_in.video.i_chroma )
{
case VLC_CODEC_I420:
case VLC_CODEC_J420:
case VLC_CODEC_YV12:
/* First line: simple copy */
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
/* Remaining lines: mean value */
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += p_pic->p[i_plane].i_pitch;
}
break;
case VLC_CODEC_I422:
case VLC_CODEC_J422:
/* First line: simple copy */
vlc_memcpy( p_out, p_in, p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
/* Remaining lines: mean value */
if( i_plane == Y_PLANE )
{
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += p_pic->p[i_plane].i_pitch;
}
}
else
{
for( ; p_out < p_out_end ; )
{
Merge( p_out, p_in, p_in + p_pic->p[i_plane].i_pitch,
p_pic->p[i_plane].i_pitch );
p_out += p_outpic->p[i_plane].i_pitch;
p_in += 2*p_pic->p[i_plane].i_pitch;
}
}
break;
}
}
EndMerge();
}
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