1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: invert.c,v 1.5 2002/01/04 14:01:34 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_Render ( struct vout_thread_s *, struct picture_s * );
86 static void vout_Display ( struct vout_thread_s *, struct picture_s * );
88 /*****************************************************************************
89 * Functions exported as capabilities. They are declared as static so that
90 * we don't pollute the namespace too much.
91 *****************************************************************************/
92 static void vout_getfunctions( function_list_t * p_function_list )
94 p_function_list->pf_probe = vout_Probe;
95 p_function_list->functions.vout.pf_create = vout_Create;
96 p_function_list->functions.vout.pf_init = vout_Init;
97 p_function_list->functions.vout.pf_end = vout_End;
98 p_function_list->functions.vout.pf_destroy = vout_Destroy;
99 p_function_list->functions.vout.pf_manage = vout_Manage;
100 p_function_list->functions.vout.pf_render = vout_Render;
101 p_function_list->functions.vout.pf_display = vout_Display;
102 p_function_list->functions.vout.pf_setpalette = NULL;
105 /*****************************************************************************
106 * intf_Probe: return a score
107 *****************************************************************************/
108 static int vout_Probe( probedata_t *p_data )
113 /*****************************************************************************
114 * vout_Create: allocates Invert video thread output method
115 *****************************************************************************
116 * This function allocates and initializes a Invert vout method.
117 *****************************************************************************/
118 static int vout_Create( vout_thread_t *p_vout )
120 /* Allocate structure */
121 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
122 if( p_vout->p_sys == NULL )
124 intf_ErrMsg("error: %s", strerror(ENOMEM) );
131 /*****************************************************************************
132 * vout_Init: initialize Invert video thread output method
133 *****************************************************************************/
134 static int vout_Init( vout_thread_t *p_vout )
140 I_OUTPUTPICTURES = 0;
142 /* Initialize the output structure */
143 p_vout->output.i_chroma = p_vout->render.i_chroma;
144 p_vout->output.i_width = p_vout->render.i_width;
145 p_vout->output.i_height = p_vout->render.i_height;
146 p_vout->output.i_aspect = p_vout->render.i_aspect;
148 /* Try to open the real video output */
149 psz_filter = main_GetPszVariable( VOUT_FILTER_VAR, "" );
150 main_PutPszVariable( VOUT_FILTER_VAR, "" );
152 intf_WarnMsg( 1, "filter: spawning the real video output" );
154 p_vout->p_sys->p_vout =
155 vout_CreateThread( NULL,
156 p_vout->render.i_width, p_vout->render.i_height,
157 p_vout->render.i_chroma, p_vout->render.i_aspect );
159 /* Everything failed */
160 if( p_vout->p_sys->p_vout == NULL )
162 intf_ErrMsg( "filter error: can't open vout, aborting" );
167 main_PutPszVariable( VOUT_FILTER_VAR, psz_filter );
169 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
174 /*****************************************************************************
175 * vout_End: terminate Invert video thread output method
176 *****************************************************************************/
177 static void vout_End( vout_thread_t *p_vout )
181 /* Free the fake output buffers we allocated */
182 for( i_index = I_OUTPUTPICTURES ; i_index ; )
185 free( PP_OUTPUTPICTURE[ i_index ]->p_data );
189 /*****************************************************************************
190 * vout_Destroy: destroy Invert video thread output method
191 *****************************************************************************
192 * Terminate an output method created by InvertCreateOutputMethod
193 *****************************************************************************/
194 static void vout_Destroy( vout_thread_t *p_vout )
196 vout_DestroyThread( p_vout->p_sys->p_vout, NULL );
198 free( p_vout->p_sys );
201 /*****************************************************************************
202 * vout_Manage: handle Invert events
203 *****************************************************************************
204 * This function should be called regularly by video output thread. It manages
205 * console events. It returns a non null value on error.
206 *****************************************************************************/
207 static int vout_Manage( vout_thread_t *p_vout )
212 /*****************************************************************************
213 * vout_Render: displays previously rendered output
214 *****************************************************************************
215 * This function send the currently rendered image to Invert image, waits
216 * until it is displayed and switch the two rendering buffers, preparing next
218 *****************************************************************************/
219 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
224 /* This is a new frame. Get a structure from the video_output. */
225 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
228 if( p_vout->b_die || p_vout->b_error )
232 msleep( VOUT_OUTMEM_SLEEP );
235 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
236 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
238 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
240 u8 *p_in, *p_in_end, *p_out;
242 p_in = p_pic->p[i_index].p_pixels;
243 p_in_end = p_in - 64 + p_pic->p[i_index].i_lines
244 * p_pic->p[i_index].i_pitch;
246 p_out = p_outpic->p[i_index].p_pixels;
248 for( ; p_in < p_in_end ; )
250 /* Do 64 pixels at a time */
251 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
252 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
253 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
254 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
255 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
256 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
257 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
258 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
263 for( ; p_in < p_in_end ; )
265 /* Do 1 pixel at a time */
266 *p_out++ = ~( *p_in++ );
270 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
272 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
275 /*****************************************************************************
276 * vout_Display: displays previously rendered output
277 *****************************************************************************
278 * This function send the currently rendered image to Invert image, waits
279 * until it is displayed and switch the two rendering buffers, preparing next
281 *****************************************************************************/
282 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )