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 *****************************************************************************/
31 #include "vlc_filter.h"
33 /*****************************************************************************
35 *****************************************************************************/
36 static int Create ( vlc_object_t * );
37 static void Destroy ( vlc_object_t * );
39 static picture_t *Filter( filter_t *, picture_t * );
41 /*****************************************************************************
43 *****************************************************************************/
45 set_description( _("Invert video filter") );
46 set_shortname( _("Color inversion" ));
47 set_category( CAT_VIDEO );
48 set_subcategory( SUBCAT_VIDEO_VFILTER );
49 set_capability( "video filter2", 0 );
50 add_shortcut( "invert" );
51 set_callbacks( Create, Destroy );
54 /*****************************************************************************
55 * vout_sys_t: Invert video output method descriptor
56 *****************************************************************************
57 * This structure is part of the video output thread descriptor.
58 * It describes the Invert specific properties of an output thread.
59 *****************************************************************************/
64 /*****************************************************************************
65 * Create: allocates Invert video thread output method
66 *****************************************************************************
67 * This function allocates and initializes a Invert vout method.
68 *****************************************************************************/
69 static int Create( vlc_object_t *p_this )
71 filter_t *p_filter = (filter_t *)p_this;
73 /* Allocate structure */
74 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
75 if( p_filter->p_sys == NULL )
77 msg_Err( p_filter, "out of memory" );
81 p_filter->pf_video_filter = Filter;
86 /*****************************************************************************
87 * Destroy: destroy Invert video thread output method
88 *****************************************************************************
89 * Terminate an output method created by InvertCreateOutputMethod
90 *****************************************************************************/
91 static void Destroy( vlc_object_t *p_this )
93 filter_t *p_filter = (filter_t *)p_this;
95 free( p_filter->p_sys );
98 /*****************************************************************************
99 * Render: displays previously rendered output
100 *****************************************************************************
101 * This function send the currently rendered image to Invert image, waits
102 * until it is displayed and switch the two rendering buffers, preparing next
104 *****************************************************************************/
105 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
111 if( !p_pic ) return NULL;
113 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
116 msg_Warn( p_filter, "can't get output picture" );
117 if( p_pic->pf_release )
118 p_pic->pf_release( p_pic );
122 if( p_pic->format.i_chroma == VLC_FOURCC('Y','U','V','A') )
124 /* We don't want to invert the alpha plane */
125 i_planes = p_pic->i_planes - 1;
126 p_filter->p_libvlc->pf_memcpy(
127 p_outpic->p[A_PLANE].p_pixels, p_pic->p[A_PLANE].p_pixels,
128 p_pic->p[A_PLANE].i_pitch * p_pic->p[A_PLANE].i_lines );
132 i_planes = p_pic->i_planes;
135 for( i_index = 0 ; i_index < i_planes ; i_index++ )
137 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
139 p_in = p_pic->p[i_index].p_pixels;
140 p_in_end = p_in + p_pic->p[i_index].i_visible_lines
141 * p_pic->p[i_index].i_pitch;
143 p_out = p_outpic->p[i_index].p_pixels;
145 for( ; p_in < p_in_end ; )
147 uint64_t *p_in64, *p_out64;
149 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
151 p_in64 = (uint64_t*)p_in;
152 p_out64 = (uint64_t*)p_out;
154 for( ; (ptrdiff_t)p_in64 < (ptrdiff_t)p_line_end ; )
156 /* Do 64 pixels at a time */
157 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
158 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
159 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
160 *p_out64++ = ~*p_in64++; *p_out64++ = ~*p_in64++;
163 p_in = (uint8_t*)p_in64;
164 p_out = (uint8_t*)p_out64;
167 for( ; p_in < p_line_end ; )
169 *p_out++ = ~( *p_in++ );
172 p_in += p_pic->p[i_index].i_pitch
173 - p_pic->p[i_index].i_visible_pitch;
174 p_out += p_outpic->p[i_index].i_pitch
175 - p_outpic->p[i_index].i_visible_pitch;
179 p_outpic->date = p_pic->date;
180 p_outpic->b_force = p_pic->b_force;
181 p_outpic->i_nb_fields = p_pic->i_nb_fields;
182 p_outpic->b_progressive = p_pic->b_progressive;
183 p_outpic->b_top_field_first = p_pic->b_top_field_first;
185 if( p_pic->pf_release )
186 p_pic->pf_release( p_pic );