1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
36 #include "vlc_filter.h"
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Create ( vlc_object_t * );
42 static void Destroy ( vlc_object_t * );
44 static picture_t *Filter( filter_t *, picture_t * );
46 /*****************************************************************************
48 *****************************************************************************/
50 set_description( N_("Invert video filter") );
51 set_shortname( N_("Color inversion" ));
52 set_category( CAT_VIDEO );
53 set_subcategory( SUBCAT_VIDEO_VFILTER );
54 set_capability( "video filter2", 0 );
55 add_shortcut( "invert" );
56 set_callbacks( Create, Destroy );
59 /*****************************************************************************
60 * vout_sys_t: Invert video output method descriptor
61 *****************************************************************************
62 * This structure is part of the video output thread descriptor.
63 * It describes the Invert specific properties of an output thread.
64 *****************************************************************************/
69 /*****************************************************************************
70 * Create: allocates Invert video thread output method
71 *****************************************************************************
72 * This function allocates and initializes a Invert vout method.
73 *****************************************************************************/
74 static int Create( vlc_object_t *p_this )
76 filter_t *p_filter = (filter_t *)p_this;
78 /* Allocate structure */
79 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
80 if( p_filter->p_sys == NULL )
82 msg_Err( p_filter, "out of memory" );
86 p_filter->pf_video_filter = Filter;
91 /*****************************************************************************
92 * Destroy: destroy Invert video thread output method
93 *****************************************************************************
94 * Terminate an output method created by InvertCreateOutputMethod
95 *****************************************************************************/
96 static void Destroy( vlc_object_t *p_this )
98 filter_t *p_filter = (filter_t *)p_this;
100 free( p_filter->p_sys );
103 /*****************************************************************************
104 * Render: displays previously rendered output
105 *****************************************************************************
106 * This function send the currently rendered image to Invert image, waits
107 * until it is displayed and switch the two rendering buffers, preparing next
109 *****************************************************************************/
110 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
116 if( !p_pic ) return NULL;
118 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
121 msg_Warn( p_filter, "can't get output picture" );
122 if( p_pic->pf_release )
123 p_pic->pf_release( p_pic );
127 if( p_pic->format.i_chroma == VLC_FOURCC('Y','U','V','A') )
129 /* We don't want to invert the alpha plane */
130 i_planes = p_pic->i_planes - 1;
132 p_outpic->p[A_PLANE].p_pixels, p_pic->p[A_PLANE].p_pixels,
133 p_pic->p[A_PLANE].i_pitch * p_pic->p[A_PLANE].i_lines );
137 i_planes = p_pic->i_planes;
140 for( i_index = 0 ; i_index < i_planes ; i_index++ )
142 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
144 p_in = p_pic->p[i_index].p_pixels;
145 p_in_end = p_in + p_pic->p[i_index].i_visible_lines
146 * p_pic->p[i_index].i_pitch;
148 p_out = p_outpic->p[i_index].p_pixels;
150 for( ; p_in < p_in_end ; )
152 uint64_t *p_in64, *p_out64;
154 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
156 p_in64 = (uint64_t*)p_in;
157 p_out64 = (uint64_t*)p_out;
159 while( p_in64 < (uint64_t *)p_line_end )
161 /* Do 64 pixels at a time */
162 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
163 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
164 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
165 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
168 p_in = (uint8_t*)p_in64;
169 p_out = (uint8_t*)p_out64;
172 for( ; p_in < p_line_end ; )
174 *p_out++ = ~( *p_in++ );
177 p_in += p_pic->p[i_index].i_pitch
178 - p_pic->p[i_index].i_visible_pitch;
179 p_out += p_outpic->p[i_index].i_pitch
180 - p_outpic->p[i_index].i_visible_pitch;
184 p_outpic->date = p_pic->date;
185 p_outpic->b_force = p_pic->b_force;
186 p_outpic->i_nb_fields = p_pic->i_nb_fields;
187 p_outpic->b_progressive = p_pic->b_progressive;
188 p_outpic->b_top_field_first = p_pic->b_top_field_first;
190 if( p_pic->pf_release )
191 p_pic->pf_release( p_pic );