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/*****************************************************************************
* video filter: video filter doing chroma conversion and resizing
* using the ffmpeg library
*****************************************************************************
* Copyright (C) 1999-2001 the VideoLAN team
* $Id: 9006346e08204dbe3e6d22b6ad3d6691ebc18c60 $
*
* Authors: Gildas Bazin <gbazin@videolan.org>
*
* 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_codec.h>
#include <vlc_filter.h>
/* ffmpeg header */
#ifdef HAVE_LIBAVCODEC_AVCODEC_H
# include <libavcodec/avcodec.h>
#elif defined(HAVE_FFMPEG_AVCODEC_H)
# include <ffmpeg/avcodec.h>
#else
# include <avcodec.h>
#endif
#include "avcodec.h"
static picture_t *Deinterlace( filter_t *p_filter, picture_t *p_pic );
/*****************************************************************************
* filter_sys_t : filter descriptor
*****************************************************************************/
struct filter_sys_t
{
bool b_resize;
bool b_convert;
bool b_resize_first;
bool b_enable_croppadd;
es_format_t fmt_in;
int i_src_ffmpeg_chroma;
es_format_t fmt_out;
int i_dst_ffmpeg_chroma;
AVPicture tmp_pic;
};
/*****************************************************************************
* OpenDeinterlace: probe the filter and return score
*****************************************************************************/
int OpenDeinterlace( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t*)p_this;
filter_sys_t *p_sys;
/* Check if we can handle that formats */
if( TestFfmpegChroma( -1, p_filter->fmt_in.i_codec ) != VLC_SUCCESS )
{
msg_Err( p_filter, "Failed to match chroma type" );
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
if( ( p_filter->p_sys = p_sys =
(filter_sys_t *)malloc(sizeof(filter_sys_t)) ) == NULL )
{
return VLC_EGENERIC;
}
/* Misc init */
p_filter->fmt_in.video.i_chroma = p_filter->fmt_in.i_codec;
if( GetFfmpegChroma( &p_sys->i_src_ffmpeg_chroma, p_filter->fmt_in.video ) != VLC_SUCCESS )
{
msg_Err( p_filter, "Failed to match chroma type" );
return VLC_EGENERIC;
}
p_filter->pf_video_filter = Deinterlace;
msg_Dbg( p_filter, "deinterlacing" );
/* libavcodec needs to be initialized for some chroma conversions */
InitLibavcodec(p_this);
return VLC_SUCCESS;
}
/*****************************************************************************
* CloseDeinterlace: clean up the filter
*****************************************************************************/
void CloseDeinterlace( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t*)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
free( p_sys );
}
/*****************************************************************************
* Do the processing here
*****************************************************************************/
static picture_t *Deinterlace( filter_t *p_filter, picture_t *p_pic )
{
filter_sys_t *p_sys = p_filter->p_sys;
AVPicture src_pic, dest_pic;
picture_t *p_pic_dst;
int i, i_res = -1;
/* Request output picture */
p_pic_dst = filter_NewPicture( p_filter );
if( !p_pic_dst )
{
picture_Release( p_pic );
return NULL;
}
/* Prepare the AVPictures for the conversion */
for( i = 0; i < p_pic->i_planes; i++ )
{
src_pic.data[i] = p_pic->p[i].p_pixels;
src_pic.linesize[i] = p_pic->p[i].i_pitch;
}
for( i = 0; i < p_pic_dst->i_planes; i++ )
{
dest_pic.data[i] = p_pic_dst->p[i].p_pixels;
dest_pic.linesize[i] = p_pic_dst->p[i].i_pitch;
}
i_res = avpicture_deinterlace( &dest_pic, &src_pic, p_sys->i_src_ffmpeg_chroma,
p_filter->fmt_in.video.i_width,
p_filter->fmt_in.video.i_height );
if( i_res == -1 )
{
msg_Err( p_filter, "deinterlacing picture failed" );
filter_DeletePicture( p_filter, p_pic_dst );
picture_Release( p_pic );
return NULL;
}
picture_CopyProperties( p_pic_dst, p_pic );
p_pic_dst->b_progressive = true;
picture_Release( p_pic );
return p_pic_dst;
}
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