1 /*****************************************************************************
2 * Psychedelic.c : Psychedelic video effect plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000-2006 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
8 * Antoine Cellerier <dionoea -at- videolan -dot- org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
29 #include <math.h> /* sin(), cos() */
36 #include <vlc_plugin.h>
38 #include "vlc_filter.h"
39 #include "vlc_image.h"
41 /*****************************************************************************
43 *****************************************************************************/
44 static int Create ( vlc_object_t * );
45 static void Destroy ( vlc_object_t * );
47 static picture_t *Filter( filter_t *, picture_t * );
49 /*****************************************************************************
51 *****************************************************************************/
53 set_description( N_("Psychedelic video filter") );
54 set_shortname( N_( "Psychedelic" ));
55 set_capability( "video filter2", 0 );
56 set_category( CAT_VIDEO );
57 set_subcategory( SUBCAT_VIDEO_VFILTER );
59 add_shortcut( "psychedelic" );
60 set_callbacks( Create, Destroy );
63 /*****************************************************************************
64 * vout_sys_t: Distort video output method descriptor
65 *****************************************************************************
66 * This structure is part of the video output thread descriptor.
67 * It describes the Distort specific properties of an output thread.
68 *****************************************************************************/
71 image_handler_t *p_image;
72 unsigned int x, y, scale;
73 int xinc, yinc, scaleinc;
77 /*****************************************************************************
78 * Create: allocates Distort video thread output method
79 *****************************************************************************
80 * This function allocates and initializes a Distort vout method.
81 *****************************************************************************/
82 static int Create( vlc_object_t *p_this )
84 filter_t *p_filter = (filter_t *)p_this;
86 /* Allocate structure */
87 p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
88 if( p_filter->p_sys == NULL )
90 msg_Err( p_filter, "out of memory" );
94 p_filter->pf_video_filter = Filter;
96 p_filter->p_sys->x = 10;
97 p_filter->p_sys->y = 10;
98 p_filter->p_sys->scale = 1;
99 p_filter->p_sys->xinc = 1;
100 p_filter->p_sys->yinc = 1;
101 p_filter->p_sys->scaleinc = 1;
102 p_filter->p_sys->u = 0;
103 p_filter->p_sys->v = 0;
104 p_filter->p_sys->p_image = NULL;
109 /*****************************************************************************
110 * Destroy: destroy Distort video thread output method
111 *****************************************************************************
112 * Terminate an output method created by DistortCreateOutputMethod
113 *****************************************************************************/
114 static void Destroy( vlc_object_t *p_this )
116 filter_t *p_filter = (filter_t *)p_this;
118 if( p_filter->p_sys->p_image )
119 image_HandlerDelete( p_filter->p_sys->p_image );
120 p_filter->p_sys->p_image = NULL;
122 free( p_filter->p_sys );
125 /*****************************************************************************
126 * Render: displays previously rendered output
127 *****************************************************************************
128 * This function send the currently rendered image to Distort image, waits
129 * until it is displayed and switch the two rendering buffers, preparing next
131 *****************************************************************************/
132 static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
140 picture_t *p_converted;
141 video_format_t fmt_out;
142 memset( &fmt_out, 0, sizeof(video_format_t) );
143 fmt_out.p_palette = NULL;
145 if( !p_pic ) return NULL;
147 p_outpic = p_filter->pf_vout_buffer_new( p_filter );
150 msg_Warn( p_filter, "can't get output picture" );
151 if( p_pic->pf_release )
152 p_pic->pf_release( p_pic );
156 if( !p_filter->p_sys->p_image )
157 p_filter->p_sys->p_image = image_HandlerCreate( p_filter );
160 u = p_filter->p_sys->u;
161 v = p_filter->p_sys->v;
162 for( y = 0; y<p_outpic->p[U_PLANE].i_lines; y++)
165 p_outpic->p[U_PLANE].p_pixels+y*p_outpic->p[U_PLANE].i_pitch,
166 u, p_outpic->p[U_PLANE].i_pitch );
168 p_outpic->p[V_PLANE].p_pixels+y*p_outpic->p[V_PLANE].i_pitch,
169 v, p_outpic->p[V_PLANE].i_pitch );
170 if( v == 0 && u != 0 )
181 vlc_memcpy( p_outpic->p[Y_PLANE].p_pixels, p_pic->p[Y_PLANE].p_pixels,
182 p_outpic->p[Y_PLANE].i_lines * p_outpic->p[Y_PLANE].i_pitch );
184 /* image visualization */
185 fmt_out = p_filter->fmt_out.video;
186 fmt_out.i_width = p_filter->fmt_out.video.i_width*p_filter->p_sys->scale/150;
187 fmt_out.i_height = p_filter->fmt_out.video.i_height*p_filter->p_sys->scale/150;
188 p_converted = image_Convert( p_filter->p_sys->p_image, p_pic,
189 &(p_pic->format), &fmt_out );
193 #define copyimage( plane, b ) \
194 for( y=0; y<p_converted->p[plane].i_visible_lines; y++) { \
195 for( x=0; x<p_converted->p[plane].i_visible_pitch; x++) { \
197 if( p_filter->p_sys->yinc == 1 ) \
200 ny = p_converted->p[plane].i_visible_lines-y; \
201 if( p_filter->p_sys->xinc == 1 ) \
204 nx = p_converted->p[plane].i_visible_pitch-x; \
205 p_outpic->p[plane].p_pixels[(p_filter->p_sys->x*b+nx)+(ny+p_filter->p_sys->y*b)*p_outpic->p[plane].i_pitch ] = p_converted->p[plane].p_pixels[y*p_converted->p[plane].i_pitch+x]; \
207 copyimage( Y_PLANE, 2 );
208 copyimage( U_PLANE, 1 );
209 copyimage( V_PLANE, 1 );
212 p_converted->pf_release( p_converted );
216 msg_Err( p_filter, "Image scaling failed miserably." );
219 p_filter->p_sys->x += p_filter->p_sys->xinc;
220 p_filter->p_sys->y += p_filter->p_sys->yinc;
222 p_filter->p_sys->scale += p_filter->p_sys->scaleinc;
223 if( p_filter->p_sys->scale >= 50 ) p_filter->p_sys->scaleinc = -1;
224 if( p_filter->p_sys->scale <= 1 ) p_filter->p_sys->scaleinc = 1;
226 w = p_filter->fmt_out.video.i_width*p_filter->p_sys->scale/150;
227 h = p_filter->fmt_out.video.i_height*p_filter->p_sys->scale/150;
228 if( p_filter->p_sys->x*2 + w >= p_filter->fmt_out.video.i_width )
229 p_filter->p_sys->xinc = -1;
230 if( p_filter->p_sys->x <= 0 )
231 p_filter->p_sys->xinc = 1;
233 if( p_filter->p_sys->x*2 + w >= p_filter->fmt_out.video.i_width )
234 p_filter->p_sys->x = (p_filter->fmt_out.video.i_width-w)/2;
235 if( p_filter->p_sys->y*2 + h >= p_filter->fmt_out.video.i_height )
236 p_filter->p_sys->y = (p_filter->fmt_out.video.i_height-h)/2;
238 if( p_filter->p_sys->y*2 + h >= p_filter->fmt_out.video.i_height )
239 p_filter->p_sys->yinc = -1;
240 if( p_filter->p_sys->y <= 0 )
241 p_filter->p_sys->yinc = 1;
243 for( y = 0; y< 16; y++ )
245 if( p_filter->p_sys->v == 0 && p_filter->p_sys->u != 0 )
246 p_filter->p_sys->u -= 1;
247 else if( p_filter->p_sys->u == 0xff )
248 p_filter->p_sys->v -= 1;
249 else if( p_filter->p_sys->v == 0xff )
250 p_filter->p_sys->u += 1;
251 else if( p_filter->p_sys->u == 0 )
252 p_filter->p_sys->v += 1;
255 p_outpic->date = p_pic->date;
256 p_outpic->b_force = p_pic->b_force;
257 p_outpic->i_nb_fields = p_pic->i_nb_fields;
258 p_outpic->b_progressive = p_pic->b_progressive;
259 p_outpic->b_top_field_first = p_pic->b_top_field_first;
261 if( p_pic->pf_release )
262 p_pic->pf_release( p_pic );