1 /*****************************************************************************
2 * deinterlace.c: video filter doing chroma conversion and resizing
3 * using the libavcodec library
4 *****************************************************************************
5 * Copyright (C) 1999-2001 VLC authors and VideoLAN
8 * Authors: Gildas Bazin <gbazin@videolan.org>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_codec.h>
34 #include <vlc_filter.h>
36 #include <libavcodec/avcodec.h>
41 static picture_t *Deinterlace( filter_t *p_filter, picture_t *p_pic );
43 /*****************************************************************************
44 * filter_sys_t : filter descriptor
45 *****************************************************************************/
51 bool b_enable_croppadd;
54 int i_src_ffmpeg_chroma;
56 int i_dst_ffmpeg_chroma;
61 /*****************************************************************************
62 * OpenDeinterlace: probe the filter and return score
63 *****************************************************************************/
64 int OpenDeinterlace( vlc_object_t *p_this )
66 filter_t *p_filter = (filter_t*)p_this;
69 /* libavcodec needs to be initialized for some chroma conversions */
72 /* Check if we can handle that formats */
73 if( TestFfmpegChroma( -1, p_filter->fmt_in.i_codec ) != VLC_SUCCESS )
75 msg_Err( p_filter, "Failed to match chroma type" );
79 /* Allocate the memory needed to store the decoder's structure */
80 if( ( p_filter->p_sys = p_sys =
81 (filter_sys_t *)malloc(sizeof(filter_sys_t)) ) == NULL )
87 p_filter->fmt_in.video.i_chroma = p_filter->fmt_in.i_codec;
88 if( GetFfmpegChroma( &p_sys->i_src_ffmpeg_chroma, p_filter->fmt_in.video ) != VLC_SUCCESS )
90 msg_Err( p_filter, "Failed to match chroma type" );
93 p_filter->pf_video_filter = Deinterlace;
95 msg_Dbg( p_filter, "deinterlacing" );
100 /*****************************************************************************
101 * CloseDeinterlace: clean up the filter
102 *****************************************************************************/
103 void CloseDeinterlace( vlc_object_t *p_this )
105 filter_t *p_filter = (filter_t*)p_this;
106 filter_sys_t *p_sys = p_filter->p_sys;
111 /*****************************************************************************
112 * Do the processing here
113 *****************************************************************************/
114 static picture_t *Deinterlace( filter_t *p_filter, picture_t *p_pic )
116 filter_sys_t *p_sys = p_filter->p_sys;
117 AVPicture src_pic, dest_pic;
118 picture_t *p_pic_dst;
121 /* Request output picture */
122 p_pic_dst = filter_NewPicture( p_filter );
125 picture_Release( p_pic );
129 /* Prepare the AVPictures for the conversion */
130 for( i = 0; i < p_pic->i_planes; i++ )
132 src_pic.data[i] = p_pic->p[i].p_pixels;
133 src_pic.linesize[i] = p_pic->p[i].i_pitch;
135 for( i = 0; i < p_pic_dst->i_planes; i++ )
137 dest_pic.data[i] = p_pic_dst->p[i].p_pixels;
138 dest_pic.linesize[i] = p_pic_dst->p[i].i_pitch;
141 i_res = avpicture_deinterlace( &dest_pic, &src_pic, p_sys->i_src_ffmpeg_chroma,
142 p_filter->fmt_in.video.i_width,
143 p_filter->fmt_in.video.i_height );
146 msg_Err( p_filter, "deinterlacing picture failed" );
147 filter_DeletePicture( p_filter, p_pic_dst );
148 picture_Release( p_pic );
152 picture_CopyProperties( p_pic_dst, p_pic );
153 p_pic_dst->b_progressive = true;
154 picture_Release( p_pic );