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"
37 #include "filter_picture.h"
39 /*****************************************************************************
41 *****************************************************************************/
42 static int Create ( vlc_object_t * );
43 static void Destroy ( vlc_object_t * );
45 static picture_t *Filter( filter_t *, picture_t * );
47 /*****************************************************************************
49 *****************************************************************************/
51 set_description( N_("Invert video filter") );
52 set_shortname( N_("Color inversion" ));
53 set_category( CAT_VIDEO );
54 set_subcategory( SUBCAT_VIDEO_VFILTER );
55 set_capability( "video filter2", 0 );
56 add_shortcut( "invert" );
57 set_callbacks( Create, Destroy );
60 /*****************************************************************************
61 * vout_sys_t: Invert video output method descriptor
62 *****************************************************************************
63 * This structure is part of the video output thread descriptor.
64 * It describes the Invert specific properties of an output thread.
65 *****************************************************************************/
70 /*****************************************************************************
71 * Create: allocates Invert video thread output method
72 *****************************************************************************
73 * This function allocates and initializes a Invert vout method.
74 *****************************************************************************/
75 static int Create( vlc_object_t *p_this )
77 filter_t *p_filter = (filter_t *)p_this;
79 /* Allocate structure */
80 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
81 if( p_filter->p_sys == NULL )
83 msg_Err( p_filter, "out of memory" );
87 p_filter->pf_video_filter = Filter;
92 /*****************************************************************************
93 * Destroy: destroy Invert video thread output method
94 *****************************************************************************
95 * Terminate an output method created by InvertCreateOutputMethod
96 *****************************************************************************/
97 static void Destroy( vlc_object_t *p_this )
99 filter_t *p_filter = (filter_t *)p_this;
101 free( p_filter->p_sys );
104 /*****************************************************************************
105 * Render: displays previously rendered output
106 *****************************************************************************
107 * This function send the currently rendered image to Invert image, waits
108 * until it is displayed and switch the two rendering buffers, preparing next
110 *****************************************************************************/
111 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
117 if( !p_pic ) return NULL;
119 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
122 msg_Warn( p_filter, "can't get output picture" );
123 if( p_pic->pf_release )
124 p_pic->pf_release( p_pic );
128 if( p_pic->format.i_chroma == VLC_FOURCC('Y','U','V','A') )
130 /* We don't want to invert the alpha plane */
131 i_planes = p_pic->i_planes - 1;
133 p_outpic->p[A_PLANE].p_pixels, p_pic->p[A_PLANE].p_pixels,
134 p_pic->p[A_PLANE].i_pitch * p_pic->p[A_PLANE].i_lines );
138 i_planes = p_pic->i_planes;
141 for( i_index = 0 ; i_index < i_planes ; i_index++ )
143 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
145 p_in = p_pic->p[i_index].p_pixels;
146 p_in_end = p_in + p_pic->p[i_index].i_visible_lines
147 * p_pic->p[i_index].i_pitch;
149 p_out = p_outpic->p[i_index].p_pixels;
151 for( ; p_in < p_in_end ; )
153 uint64_t *p_in64, *p_out64;
155 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
157 p_in64 = (uint64_t*)p_in;
158 p_out64 = (uint64_t*)p_out;
160 while( p_in64 < (uint64_t *)p_line_end )
162 /* Do 64 pixels at a time */
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++;
166 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
169 p_in = (uint8_t*)p_in64;
170 p_out = (uint8_t*)p_out64;
173 for( ; p_in < p_line_end ; )
175 *p_out++ = ~( *p_in++ );
178 p_in += p_pic->p[i_index].i_pitch
179 - p_pic->p[i_index].i_visible_pitch;
180 p_out += p_outpic->p[i_index].i_pitch
181 - p_outpic->p[i_index].i_visible_pitch;
185 return CopyInfoAndRelease( p_outpic, p_pic );