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() */
32 #include <vlc/decoder.h>
34 #include "vlc_filter.h"
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Create ( vlc_object_t * );
40 static void Destroy ( vlc_object_t * );
42 static picture_t *Filter( filter_t *, picture_t * );
44 /*****************************************************************************
46 *****************************************************************************/
48 set_description( _("Invert video filter") );
49 set_shortname( N_("Color inversion" ));
50 set_category( CAT_VIDEO );
51 set_subcategory( SUBCAT_VIDEO_VFILTER2 );
52 set_capability( "video filter2", 0 );
53 add_shortcut( "invert" );
54 set_callbacks( Create, Destroy );
57 /*****************************************************************************
58 * vout_sys_t: Invert video output method descriptor
59 *****************************************************************************
60 * This structure is part of the video output thread descriptor.
61 * It describes the Invert specific properties of an output thread.
62 *****************************************************************************/
67 /*****************************************************************************
68 * Create: allocates Invert video thread output method
69 *****************************************************************************
70 * This function allocates and initializes a Invert vout method.
71 *****************************************************************************/
72 static int Create( vlc_object_t *p_this )
74 filter_t *p_filter = (filter_t *)p_this;
76 /* Allocate structure */
77 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
78 if( p_filter->p_sys == NULL )
80 msg_Err( p_filter, "out of memory" );
84 p_filter->pf_video_filter = Filter;
89 /*****************************************************************************
90 * Destroy: destroy Invert video thread output method
91 *****************************************************************************
92 * Terminate an output method created by InvertCreateOutputMethod
93 *****************************************************************************/
94 static void Destroy( vlc_object_t *p_this )
96 filter_t *p_filter = (filter_t *)p_this;
98 free( p_filter->p_sys );
101 /*****************************************************************************
102 * Render: displays previously rendered output
103 *****************************************************************************
104 * This function send the currently rendered image to Invert image, waits
105 * until it is displayed and switch the two rendering buffers, preparing next
107 *****************************************************************************/
108 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
113 if( !p_pic ) return NULL;
115 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
118 msg_Warn( p_filter, "can't get output picture" );
119 if( p_pic->pf_release )
120 p_pic->pf_release( p_pic );
124 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
126 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
128 p_in = p_pic->p[i_index].p_pixels;
129 p_in_end = p_in + p_pic->p[i_index].i_visible_lines
130 * p_pic->p[i_index].i_pitch;
132 p_out = p_outpic->p[i_index].p_pixels;
134 for( ; p_in < p_in_end ; )
136 uint64_t *p_in64, *p_out64;
138 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
140 p_in64 = (uint64_t*)p_in;
141 p_out64 = (uint64_t*)p_out;
143 for( ; (ptrdiff_t)p_in64 < (ptrdiff_t)p_line_end ; )
145 /* Do 64 pixels at a time */
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++;
149 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
152 p_in = (uint8_t*)p_in64;
153 p_out = (uint8_t*)p_out64;
156 for( ; p_in < p_line_end ; )
158 *p_out++ = ~( *p_in++ );
161 p_in += p_pic->p[i_index].i_pitch
162 - p_pic->p[i_index].i_visible_pitch;
163 p_out += p_outpic->p[i_index].i_pitch
164 - p_outpic->p[i_index].i_visible_pitch;
168 p_outpic->date = p_pic->date;
169 p_outpic->b_force = p_pic->b_force;
170 p_outpic->i_nb_fields = p_pic->i_nb_fields;
171 p_outpic->b_progressive = p_pic->b_progressive;
172 p_outpic->b_top_field_first = p_pic->b_top_field_first;
174 p_pic->pf_release( p_pic );