1 /*****************************************************************************
2 * invert.c : Invert video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: invert.c,v 1.15 2002/07/20 18:01:42 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() */
34 #include "filter_common.h"
36 /*****************************************************************************
37 * Capabilities defined in the other files.
38 *****************************************************************************/
39 static void vout_getfunctions( function_list_t * p_function_list );
41 /*****************************************************************************
42 * Build configuration tree.
43 *****************************************************************************/
48 SET_DESCRIPTION( _("invert video module") )
49 /* Capability score set to 0 because we don't want to be spawned
50 * as a video output unless explicitly requested to */
51 ADD_CAPABILITY( VOUT_FILTER, 0 )
52 ADD_SHORTCUT( "invert" )
56 vout_getfunctions( &p_module->p_functions->vout );
59 MODULE_DEACTIVATE_START
60 MODULE_DEACTIVATE_STOP
62 /*****************************************************************************
63 * vout_sys_t: Invert video output method descriptor
64 *****************************************************************************
65 * This structure is part of the video output thread descriptor.
66 * It describes the Invert specific properties of an output thread.
67 *****************************************************************************/
70 vout_thread_t *p_vout;
73 /*****************************************************************************
75 *****************************************************************************/
76 static int vout_Create ( vout_thread_t * );
77 static int vout_Init ( vout_thread_t * );
78 static void vout_End ( vout_thread_t * );
79 static void vout_Destroy ( vout_thread_t * );
80 static int vout_Manage ( vout_thread_t * );
81 static void vout_Render ( vout_thread_t *, picture_t * );
82 static void vout_Display ( vout_thread_t *, picture_t * );
84 /*****************************************************************************
85 * Functions exported as capabilities. They are declared as static so that
86 * we don't pollute the namespace too much.
87 *****************************************************************************/
88 static void vout_getfunctions( function_list_t * p_function_list )
90 p_function_list->functions.vout.pf_create = vout_Create;
91 p_function_list->functions.vout.pf_init = vout_Init;
92 p_function_list->functions.vout.pf_end = vout_End;
93 p_function_list->functions.vout.pf_destroy = vout_Destroy;
94 p_function_list->functions.vout.pf_manage = vout_Manage;
95 p_function_list->functions.vout.pf_render = vout_Render;
96 p_function_list->functions.vout.pf_display = vout_Display;
99 /*****************************************************************************
100 * vout_Create: allocates Invert video thread output method
101 *****************************************************************************
102 * This function allocates and initializes a Invert vout method.
103 *****************************************************************************/
104 static int vout_Create( vout_thread_t *p_vout )
106 /* Allocate structure */
107 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
108 if( p_vout->p_sys == NULL )
110 msg_Err( p_vout, "out of memory" );
117 /*****************************************************************************
118 * vout_Init: initialize Invert video thread output method
119 *****************************************************************************/
120 static int vout_Init( vout_thread_t *p_vout )
125 I_OUTPUTPICTURES = 0;
127 /* Initialize the output structure */
128 p_vout->output.i_chroma = p_vout->render.i_chroma;
129 p_vout->output.i_width = p_vout->render.i_width;
130 p_vout->output.i_height = p_vout->render.i_height;
131 p_vout->output.i_aspect = p_vout->render.i_aspect;
133 /* Try to open the real video output */
134 msg_Dbg( p_vout, "spawning the real video output" );
136 p_vout->p_sys->p_vout =
137 vout_CreateThread( p_vout,
138 p_vout->render.i_width, p_vout->render.i_height,
139 p_vout->render.i_chroma, p_vout->render.i_aspect );
141 /* Everything failed */
142 if( p_vout->p_sys->p_vout == NULL )
144 msg_Err( p_vout, "can't open vout, aborting" );
149 ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
154 /*****************************************************************************
155 * vout_End: terminate Invert video thread output method
156 *****************************************************************************/
157 static void vout_End( vout_thread_t *p_vout )
161 /* Free the fake output buffers we allocated */
162 for( i_index = I_OUTPUTPICTURES ; i_index ; )
165 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
169 /*****************************************************************************
170 * vout_Destroy: destroy Invert video thread output method
171 *****************************************************************************
172 * Terminate an output method created by InvertCreateOutputMethod
173 *****************************************************************************/
174 static void vout_Destroy( vout_thread_t *p_vout )
176 vout_DestroyThread( p_vout->p_sys->p_vout );
178 free( p_vout->p_sys );
181 /*****************************************************************************
182 * vout_Manage: handle Invert events
183 *****************************************************************************
184 * This function should be called regularly by video output thread. It manages
185 * console events. It returns a non null value on error.
186 *****************************************************************************/
187 static int vout_Manage( vout_thread_t *p_vout )
192 /*****************************************************************************
193 * vout_Render: displays previously rendered output
194 *****************************************************************************
195 * This function send the currently rendered image to Invert image, waits
196 * until it is displayed and switch the two rendering buffers, preparing next
198 *****************************************************************************/
199 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
204 /* This is a new frame. Get a structure from the video_output. */
205 while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
208 if( p_vout->b_die || p_vout->b_error )
212 msleep( VOUT_OUTMEM_SLEEP );
215 vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, p_pic->date );
216 vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
218 for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
220 u8 *p_in, *p_in_end, *p_out;
222 p_in = p_pic->p[i_index].p_pixels;
223 p_in_end = p_in - 64 + p_pic->p[i_index].i_lines
224 * p_pic->p[i_index].i_pitch;
226 p_out = p_outpic->p[i_index].p_pixels;
228 for( ; p_in < p_in_end ; )
230 /* Do 64 pixels at a time */
231 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
232 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
233 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
234 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
235 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
236 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
237 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
238 *((u64*)p_out)++ = ~( *((u64*)p_in)++ );
243 for( ; p_in < p_in_end ; )
245 /* Do 1 pixel at a time */
246 *p_out++ = ~( *p_in++ );
250 vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
252 vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
255 /*****************************************************************************
256 * vout_Display: displays previously rendered output
257 *****************************************************************************
258 * This function send the currently rendered image to Invert image, waits
259 * until it is displayed and switch the two rendering buffers, preparing next
261 *****************************************************************************/
262 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )