1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: invert.c,v 1.4 2003/01/09 17:47:05 sam Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
33 #include "filter_common.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Create ( vlc_object_t * );
39 static void Destroy ( vlc_object_t * );
41 static int Init ( vout_thread_t * );
42 static void End ( vout_thread_t * );
43 static void Render ( vout_thread_t *, picture_t * );
45 /*****************************************************************************
47 *****************************************************************************/
49 set_description( _("invert video module") );
50 set_capability( "video filter", 0 );
51 add_shortcut( "invert" );
52 set_callbacks( Create, Destroy );
55 /*****************************************************************************
56 * vout_sys_t: Invert video output method descriptor
57 *****************************************************************************
58 * This structure is part of the video output thread descriptor.
59 * It describes the Invert specific properties of an output thread.
60 *****************************************************************************/
63 vout_thread_t *p_vout;
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 vout_thread_t *p_vout = (vout_thread_t *)p_this;
75 /* Allocate structure */
76 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
77 if( p_vout->p_sys == NULL )
79 msg_Err( p_vout, "out of memory" );
83 p_vout->pf_init = Init;
85 p_vout->pf_manage = NULL;
86 p_vout->pf_render = Render;
87 p_vout->pf_display = NULL;
92 /*****************************************************************************
93 * Init: initialize Invert video thread output method
94 *****************************************************************************/
95 static int Init( vout_thread_t *p_vout )
100 I_OUTPUTPICTURES = 0;
102 /* Initialize the output structure */
103 p_vout->output.i_chroma = p_vout->render.i_chroma;
104 p_vout->output.i_width = p_vout->render.i_width;
105 p_vout->output.i_height = p_vout->render.i_height;
106 p_vout->output.i_aspect = p_vout->render.i_aspect;
108 /* Try to open the real video output */
109 msg_Dbg( p_vout, "spawning the real video output" );
111 p_vout->p_sys->p_vout = vout_Create( p_vout,
112 p_vout->render.i_width, p_vout->render.i_height,
113 p_vout->render.i_chroma, p_vout->render.i_aspect );
115 /* Everything failed */
116 if( p_vout->p_sys->p_vout == NULL )
118 msg_Err( p_vout, "can't open vout, aborting" );
123 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
128 /*****************************************************************************
129 * End: terminate Invert video thread output method
130 *****************************************************************************/
131 static void End( vout_thread_t *p_vout )
135 /* Free the fake output buffers we allocated */
136 for( i_index = I_OUTPUTPICTURES ; i_index ; )
139 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
143 /*****************************************************************************
144 * Destroy: destroy Invert video thread output method
145 *****************************************************************************
146 * Terminate an output method created by InvertCreateOutputMethod
147 *****************************************************************************/
148 static void Destroy( vlc_object_t *p_this )
150 vout_thread_t *p_vout = (vout_thread_t *)p_this;
152 vout_Destroy( p_vout->p_sys->p_vout );
154 free( p_vout->p_sys );
157 /*****************************************************************************
158 * Render: displays previously rendered output
159 *****************************************************************************
160 * This function send the currently rendered image to Invert image, waits
161 * until it is displayed and switch the two rendering buffers, preparing next
163 *****************************************************************************/
164 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
169 /* This is a new frame. Get a structure from the video_output. */
170 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
173 if( p_vout->b_die || p_vout->b_error )
177 msleep( VOUT_OUTMEM_SLEEP );
180 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
181 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
183 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
185 uint8_t *p_in, *p_in_end, *p_line_end, *p_out;
187 p_in = p_pic->p[i_index].p_pixels;
188 p_in_end = p_in + p_pic->p[i_index].i_lines
189 * p_pic->p[i_index].i_pitch;
191 p_out = p_outpic->p[i_index].p_pixels;
193 for( ; p_in < p_in_end ; )
195 p_line_end = p_in + p_pic->p[i_index].i_visible_pitch - 64;
197 for( ; p_in < p_line_end ; )
199 /* Do 64 pixels at a time */
200 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
201 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
202 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
203 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
204 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
205 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
206 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
207 *((uint64_t*)p_out)++ = ~( *((uint64_t*)p_in)++ );
212 for( ; p_in < p_line_end ; )
214 *p_out++ = ~( *p_in++ );
217 p_in += p_pic->p[i_index].i_pitch
218 - p_pic->p[i_index].i_visible_pitch;
219 p_out += p_outpic->p[i_index].i_pitch
220 - p_outpic->p[i_index].i_visible_pitch;
224 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
226 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );