1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: invert.c,v 1.16 2002/07/31 20:56:51 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 *****************************************************************************/
28 #include <stdlib.h> /* malloc(), free() */
34 #include "filter_common.h"
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Create ( vlc_object_t * );
40 static void Destroy ( vlc_object_t * );
42 static int Init ( vout_thread_t * );
43 static void End ( vout_thread_t * );
44 static void Render ( vout_thread_t *, picture_t * );
46 /*****************************************************************************
48 *****************************************************************************/
50 set_description( _("invert video module") );
51 set_capability( "video filter", 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 *****************************************************************************/
64 vout_thread_t *p_vout;
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 vout_thread_t *p_vout = (vout_thread_t *)p_this;
76 /* Allocate structure */
77 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
78 if( p_vout->p_sys == NULL )
80 msg_Err( p_vout, "out of memory" );
84 p_vout->pf_init = Init;
86 p_vout->pf_manage = NULL;
87 p_vout->pf_render = Render;
88 p_vout->pf_display = NULL;
93 /*****************************************************************************
94 * Init: initialize Invert video thread output method
95 *****************************************************************************/
96 static int Init( vout_thread_t *p_vout )
101 I_OUTPUTPICTURES = 0;
103 /* Initialize the output structure */
104 p_vout->output.i_chroma = p_vout->render.i_chroma;
105 p_vout->output.i_width = p_vout->render.i_width;
106 p_vout->output.i_height = p_vout->render.i_height;
107 p_vout->output.i_aspect = p_vout->render.i_aspect;
109 /* Try to open the real video output */
110 msg_Dbg( p_vout, "spawning the real video output" );
112 p_vout->p_sys->p_vout =
113 vout_CreateThread( p_vout,
114 p_vout->render.i_width, p_vout->render.i_height,
115 p_vout->render.i_chroma, p_vout->render.i_aspect );
117 /* Everything failed */
118 if( p_vout->p_sys->p_vout == NULL )
120 msg_Err( p_vout, "can't open vout, aborting" );
125 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
130 /*****************************************************************************
131 * End: terminate Invert video thread output method
132 *****************************************************************************/
133 static void End( vout_thread_t *p_vout )
137 /* Free the fake output buffers we allocated */
138 for( i_index = I_OUTPUTPICTURES ; i_index ; )
141 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
145 /*****************************************************************************
146 * Destroy: destroy Invert video thread output method
147 *****************************************************************************
148 * Terminate an output method created by InvertCreateOutputMethod
149 *****************************************************************************/
150 static void Destroy( vlc_object_t *p_this )
152 vout_thread_t *p_vout = (vout_thread_t *)p_this;
154 vout_DestroyThread( p_vout->p_sys->p_vout );
156 free( p_vout->p_sys );
159 /*****************************************************************************
160 * Render: displays previously rendered output
161 *****************************************************************************
162 * This function send the currently rendered image to Invert image, waits
163 * until it is displayed and switch the two rendering buffers, preparing next
165 *****************************************************************************/
166 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
171 /* This is a new frame. Get a structure from the video_output. */
172 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
175 if( p_vout->b_die || p_vout->b_error )
179 msleep( VOUT_OUTMEM_SLEEP );
182 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
183 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
185 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
187 u8 *p_in, *p_in_end, *p_out;
189 p_in = p_pic->p[i_index].p_pixels;
190 p_in_end = p_in - 64 + p_pic->p[i_index].i_lines
191 * p_pic->p[i_index].i_pitch;
193 p_out = p_outpic->p[i_index].p_pixels;
195 for( ; p_in < p_in_end ; )
197 /* Do 64 pixels at a time */
198 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
199 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
200 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
201 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
202 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
203 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
204 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
205 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
210 for( ; p_in < p_in_end ; )
212 /* Do 1 pixel at a time */
213 *p_out++ = ~( *p_in++ );
217 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
219 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );