1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: invert.c,v 1.4 2002/01/02 14:37:42 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() */
31 #include <videolan/vlc.h>
34 #include "video_output.h"
36 #include "filter_common.h"
38 /*****************************************************************************
39 * Capabilities defined in the other files.
40 *****************************************************************************/
41 static void vout_getfunctions( function_list_t * p_function_list );
43 /*****************************************************************************
44 * Build configuration tree.
45 *****************************************************************************/
50 SET_DESCRIPTION( "invert video module" )
51 /* Capability score set to 0 because we don't want to be spawned
52 * as a video output unless explicitly requested to */
53 ADD_CAPABILITY( VOUT, 0 )
54 ADD_SHORTCUT( "invert" )
58 vout_getfunctions( &p_module->p_functions->vout );
61 MODULE_DEACTIVATE_START
62 MODULE_DEACTIVATE_STOP
64 /*****************************************************************************
65 * vout_sys_t: Invert video output method descriptor
66 *****************************************************************************
67 * This structure is part of the video output thread descriptor.
68 * It describes the Invert specific properties of an output thread.
69 *****************************************************************************/
70 typedef struct vout_sys_s
72 struct vout_thread_s *p_vout;
76 /*****************************************************************************
78 *****************************************************************************/
79 static int vout_Probe ( probedata_t *p_data );
80 static int vout_Create ( struct vout_thread_s * );
81 static int vout_Init ( struct vout_thread_s * );
82 static void vout_End ( struct vout_thread_s * );
83 static void vout_Destroy ( struct vout_thread_s * );
84 static int vout_Manage ( struct vout_thread_s * );
85 static void vout_Display ( struct vout_thread_s *, struct picture_s * );
87 /*****************************************************************************
88 * Functions exported as capabilities. They are declared as static so that
89 * we don't pollute the namespace too much.
90 *****************************************************************************/
91 static void vout_getfunctions( function_list_t * p_function_list )
93 p_function_list->pf_probe = vout_Probe;
94 p_function_list->functions.vout.pf_create = vout_Create;
95 p_function_list->functions.vout.pf_init = vout_Init;
96 p_function_list->functions.vout.pf_end = vout_End;
97 p_function_list->functions.vout.pf_destroy = vout_Destroy;
98 p_function_list->functions.vout.pf_manage = vout_Manage;
99 p_function_list->functions.vout.pf_display = vout_Display;
100 p_function_list->functions.vout.pf_setpalette = NULL;
103 /*****************************************************************************
104 * intf_Probe: return a score
105 *****************************************************************************/
106 static int vout_Probe( probedata_t *p_data )
111 /*****************************************************************************
112 * vout_Create: allocates Invert video thread output method
113 *****************************************************************************
114 * This function allocates and initializes a Invert vout method.
115 *****************************************************************************/
116 static int vout_Create( vout_thread_t *p_vout )
118 /* Allocate structure */
119 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
120 if( p_vout->p_sys == NULL )
122 intf_ErrMsg("error: %s", strerror(ENOMEM) );
129 /*****************************************************************************
130 * vout_Init: initialize Invert video thread output method
131 *****************************************************************************/
132 static int vout_Init( vout_thread_t *p_vout )
138 I_OUTPUTPICTURES = 0;
140 /* Initialize the output structure */
141 switch( p_vout->render.i_chroma )
148 p_vout->output.i_chroma = p_vout->render.i_chroma;
149 p_vout->output.i_width = p_vout->render.i_width;
150 p_vout->output.i_height = p_vout->render.i_height;
151 p_vout->output.i_aspect = p_vout->render.i_aspect;
155 return( 0 ); /* unknown chroma */
159 /* Try to open the real video output */
160 psz_filter = main_GetPszVariable( VOUT_FILTER_VAR, "" );
161 main_PutPszVariable( VOUT_FILTER_VAR, "" );
163 intf_WarnMsg( 1, "filter: spawning the real video output" );
165 p_vout->p_sys->p_vout =
166 vout_CreateThread( NULL,
167 p_vout->render.i_width, p_vout->render.i_height,
168 p_vout->render.i_chroma, p_vout->render.i_aspect );
170 /* Everything failed */
171 if( p_vout->p_sys->p_vout == NULL )
173 intf_ErrMsg( "filter error: can't open vout, aborting" );
178 main_PutPszVariable( VOUT_FILTER_VAR, psz_filter );
180 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
185 /*****************************************************************************
186 * vout_End: terminate Invert video thread output method
187 *****************************************************************************/
188 static void vout_End( vout_thread_t *p_vout )
192 /* Free the fake output buffers we allocated */
193 for( i_index = I_OUTPUTPICTURES ; i_index ; )
196 free( PP_OUTPUTPICTURE[ i_index ]->planes[ 0 ].p_data );
200 /*****************************************************************************
201 * vout_Destroy: destroy Invert video thread output method
202 *****************************************************************************
203 * Terminate an output method created by InvertCreateOutputMethod
204 *****************************************************************************/
205 static void vout_Destroy( vout_thread_t *p_vout )
207 vout_DestroyThread( p_vout->p_sys->p_vout, NULL );
209 free( p_vout->p_sys );
212 /*****************************************************************************
213 * vout_Manage: handle Invert events
214 *****************************************************************************
215 * This function should be called regularly by video output thread. It manages
216 * console events. It returns a non null value on error.
217 *****************************************************************************/
218 static int vout_Manage( vout_thread_t *p_vout )
223 /*****************************************************************************
224 * vout_Display: displays previously rendered output
225 *****************************************************************************
226 * This function send the currently rendered image to Invert image, waits
227 * until it is displayed and switch the two rendering buffers, preparing next
229 *****************************************************************************/
230 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
235 /* This is a new frame. Get a structure from the video_output. */
236 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
239 if( p_vout->b_die || p_vout->b_error )
243 msleep( VOUT_OUTMEM_SLEEP );
246 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, mdate() + 50000 );
247 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
249 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
251 pixel_data_t *p_in, *p_in_end, *p_out;
253 p_in = p_pic->planes[ i_index ].p_data;
254 p_in_end = p_in + p_pic->planes[ i_index ].i_bytes - 64;
256 p_out = p_outpic->planes[ i_index ].p_data;
258 for( ; p_in < p_in_end ; )
260 /* Do 64 pixels at a time */
261 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
262 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
263 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
264 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
265 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
266 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
267 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
268 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
273 for( ; p_in < p_in_end ; )
275 /* Do 1 pixel at a time */
276 *p_out++ = ~( *p_in++ );
280 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
282 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );