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 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc/decoder.h>
33 #include "vlc_filter.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
39 static void Destroy ( vlc_object_t * );
41 static picture_t *Filter( filter_t *, picture_t * );
43 /*****************************************************************************
45 *****************************************************************************/
47 set_description( _("Invert video filter") );
48 set_shortname( N_("Color inversion" ));
49 set_category( CAT_VIDEO );
50 set_subcategory( SUBCAT_VIDEO_VFILTER2 );
51 set_capability( "video filter2", 0 );
52 add_shortcut( "invert" );
53 set_callbacks( Create, Destroy );
56 /*****************************************************************************
57 * vout_sys_t: Invert video output method descriptor
58 *****************************************************************************
59 * This structure is part of the video output thread descriptor.
60 * It describes the Invert specific properties of an output thread.
61 *****************************************************************************/
66 /*****************************************************************************
67 * Create: allocates Invert video thread output method
68 *****************************************************************************
69 * This function allocates and initializes a Invert vout method.
70 *****************************************************************************/
71 static int Create( vlc_object_t *p_this )
73 filter_t *p_filter = (filter_t *)p_this;
75 /* Allocate structure */
76 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
77 if( p_filter->p_sys == NULL )
79 msg_Err( p_filter, "out of memory" );
83 p_filter->pf_video_filter = Filter;
88 /*****************************************************************************
89 * Destroy: destroy Invert video thread output method
90 *****************************************************************************
91 * Terminate an output method created by InvertCreateOutputMethod
92 *****************************************************************************/
93 static void Destroy( vlc_object_t *p_this )
95 filter_t *p_filter = (filter_t *)p_this;
97 free( p_filter->p_sys );
100 /*****************************************************************************
101 * Render: displays previously rendered output
102 *****************************************************************************
103 * This function send the currently rendered image to Invert image, waits
104 * until it is displayed and switch the two rendering buffers, preparing next
106 *****************************************************************************/
107 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
112 if( !p_pic ) return NULL;
114 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
117 msg_Warn( p_filter, "can't get output picture" );
118 if( p_pic->pf_release )
119 p_pic->pf_release( p_pic );
123 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
125 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
127 p_in = p_pic->p[i_index].p_pixels;
128 p_in_end = p_in + p_pic->p[i_index].i_visible_lines
129 * p_pic->p[i_index].i_pitch;
131 p_out = p_outpic->p[i_index].p_pixels;
133 for( ; p_in < p_in_end ; )
135 uint64_t *p_in64, *p_out64;
137 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
139 p_in64 = (uint64_t*)p_in;
140 p_out64 = (uint64_t*)p_out;
142 for( ; (ptrdiff_t)p_in64 < (ptrdiff_t)p_line_end ; )
144 /* Do 64 pixels at a time */
145 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
146 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
147 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
148 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
151 p_in = (uint8_t*)p_in64;
152 p_out = (uint8_t*)p_out64;
155 for( ; p_in < p_line_end ; )
157 *p_out++ = ~( *p_in++ );
160 p_in += p_pic->p[i_index].i_pitch
161 - p_pic->p[i_index].i_visible_pitch;
162 p_out += p_outpic->p[i_index].i_pitch
163 - p_outpic->p[i_index].i_visible_pitch;
167 p_outpic->date = p_pic->date;
168 p_outpic->b_force = p_pic->b_force;
169 p_outpic->i_nb_fields = p_pic->i_nb_fields;
170 p_outpic->b_progressive = p_pic->b_progressive;
171 p_outpic->b_top_field_first = p_pic->b_top_field_first;
173 p_pic->pf_release( p_pic );