1 /*****************************************************************************
2 * marq.c : marquee display video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2003-2005 the VideoLAN team
7 * Authors: Mark Moriarty
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
33 #include "vlc_filter.h"
34 #include "vlc_block.h"
37 /*****************************************************************************
39 *****************************************************************************/
40 static int CreateFilter ( vlc_object_t * );
41 static void DestroyFilter( vlc_object_t * );
42 static subpicture_t *Filter( filter_t *, mtime_t );
45 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
46 vlc_value_t oldval, vlc_value_t newval,
48 static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
49 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
50 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
51 0x00000080, 0x000000FF, 0x0000FFFF};
52 static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
53 N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
54 N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
55 N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
58 /*****************************************************************************
59 * filter_sys_t: marquee filter descriptor
60 *****************************************************************************/
63 int i_xoff, i_yoff; /* offsets for the display string in the video window */
64 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
67 char *psz_marquee; /* marquee string */
69 text_style_t *p_style; /* font control */
73 vlc_bool_t b_need_update;
76 #define MSG_TEXT N_("Text")
77 #define MSG_LONGTEXT N_("Marquee text to display.")
78 #define POSX_TEXT N_("X offset")
79 #define POSX_LONGTEXT N_("X offset, from the left screen edge." )
80 #define POSY_TEXT N_("Y offset")
81 #define POSY_LONGTEXT N_("Y offset, down from the top." )
82 #define TIMEOUT_TEXT N_("Timeout")
83 #define TIMEOUT_LONGTEXT N_("Number of milliseconds the marquee must remain " \
84 "displayed. Default value is " \
85 "0 (remains forever).")
86 #define OPACITY_TEXT N_("Opacity")
87 #define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
88 "overlayed text. 0 = transparent, 255 = totally opaque. " )
89 #define SIZE_TEXT N_("Font size, pixels")
90 #define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
93 #define COLOR_TEXT N_("Color")
94 #define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
95 "the video. This must be an hexadecimal (like HTML colors). The first two "\
96 "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
97 " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
99 #define POS_TEXT N_("Marquee position")
100 #define POS_LONGTEXT N_( \
101 "You can enforce the marquee position on the video " \
102 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
103 "also use combinations of these values, eg 6 = top-right).")
105 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
106 static char *ppsz_pos_descriptions[] =
107 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
108 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
110 /*****************************************************************************
112 *****************************************************************************/
114 set_capability( "sub filter", 0 );
115 set_shortname( N_("Marquee" ));
116 set_callbacks( CreateFilter, DestroyFilter );
117 set_category( CAT_VIDEO );
118 set_subcategory( SUBCAT_VIDEO_SUBPIC );
119 add_string( "marq-marquee", "VLC", NULL, MSG_TEXT, MSG_LONGTEXT,
122 set_section( N_("Position"), NULL );
123 add_integer( "marq-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
124 add_integer( "marq-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
125 add_integer( "marq-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
127 set_section( N_("Font"), NULL );
128 /* 5 sets the default to top [1] left [4] */
129 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
130 add_integer_with_range( "marq-opacity", 255, 0, 255, NULL,
131 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
132 add_integer( "marq-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
134 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
135 add_integer( "marq-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
137 set_section( N_("Misc"), NULL );
138 add_integer( "marq-timeout", 0, NULL, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
141 set_description( _("Marquee display") );
142 add_shortcut( "marq" );
145 /*****************************************************************************
146 * CreateFilter: allocates marquee video filter
147 *****************************************************************************/
148 static int CreateFilter( vlc_object_t *p_this )
150 filter_t *p_filter = (filter_t *)p_this;
153 /* Allocate structure */
154 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
157 msg_Err( p_filter, "out of memory" );
161 p_sys->p_style = malloc( sizeof( text_style_t ) );
162 memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ) );
164 p_sys->i_xoff = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-x" );
165 p_sys->i_yoff = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-y" );
166 p_sys->i_timeout = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-timeout" );
167 p_sys->i_pos = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-position" );
168 p_sys->psz_marquee = var_CreateGetString( p_filter->p_libvlc_global, "marq-marquee" );
169 p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_filter->p_libvlc_global , "marq-opacity" );
170 p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-color" );
171 p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter->p_libvlc_global , "marq-size" );
173 var_AddCallback( p_filter->p_libvlc_global, "marq-x", MarqueeCallback, p_sys );
174 var_AddCallback( p_filter->p_libvlc_global, "marq-y", MarqueeCallback, p_sys );
175 var_AddCallback( p_filter->p_libvlc_global, "marq-marquee", MarqueeCallback, p_sys );
176 var_AddCallback( p_filter->p_libvlc_global, "marq-timeout", MarqueeCallback, p_sys );
177 var_AddCallback( p_filter->p_libvlc_global, "marq-position", MarqueeCallback, p_sys );
178 var_AddCallback( p_filter->p_libvlc_global, "marq-color", MarqueeCallback, p_sys );
179 var_AddCallback( p_filter->p_libvlc_global, "marq-opacity", MarqueeCallback, p_sys );
180 var_AddCallback( p_filter->p_libvlc_global, "marq-size", MarqueeCallback, p_sys );
183 p_filter->pf_sub_filter = Filter;
184 p_sys->last_time = ((time_t)-1);
185 p_sys->b_need_update = VLC_TRUE;
189 /*****************************************************************************
190 * DestroyFilter: destroy marquee video filter
191 *****************************************************************************/
192 static void DestroyFilter( vlc_object_t *p_this )
194 filter_t *p_filter = (filter_t *)p_this;
195 filter_sys_t *p_sys = p_filter->p_sys;
197 if( p_sys->p_style ) free( p_sys->p_style );
198 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
201 /* Delete the marquee variables */
202 var_DelCallback( p_filter->p_libvlc_global, "marq-x", MarqueeCallback, p_sys );
203 var_DelCallback( p_filter->p_libvlc_global, "marq-y", MarqueeCallback, p_sys );
204 var_DelCallback( p_filter->p_libvlc_global, "marq-marquee", MarqueeCallback, p_sys );
205 var_DelCallback( p_filter->p_libvlc_global, "marq-timeout", MarqueeCallback, p_sys );
206 var_DelCallback( p_filter->p_libvlc_global, "marq-position", MarqueeCallback, p_sys );
207 var_DelCallback( p_filter->p_libvlc_global, "marq-color", MarqueeCallback, p_sys );
208 var_DelCallback( p_filter->p_libvlc_global, "marq-opacity", MarqueeCallback, p_sys );
209 var_DelCallback( p_filter->p_libvlc_global, "marq-size", MarqueeCallback, p_sys );
211 var_Destroy( p_filter->p_libvlc_global , "marq-marquee" );
212 var_Destroy( p_filter->p_libvlc_global , "marq-x" );
213 var_Destroy( p_filter->p_libvlc_global , "marq-y" );
214 var_Destroy( p_filter->p_libvlc_global , "marq-timeout" );
215 var_Destroy( p_filter->p_libvlc_global , "marq-position" );
216 var_Destroy( p_filter->p_libvlc_global , "marq-color");
217 var_Destroy( p_filter->p_libvlc_global , "marq-opacity");
218 var_Destroy( p_filter->p_libvlc_global , "marq-size");
221 /****************************************************************************
222 * Filter: the whole thing
223 ****************************************************************************
224 * This function outputs subpictures at regular time intervals.
225 ****************************************************************************/
226 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
228 filter_sys_t *p_sys = p_filter->p_sys;
233 if( p_sys->last_time == time( NULL ) )
238 if( p_sys->b_need_update == VLC_FALSE )
243 p_spu = p_filter->pf_sub_buffer_new( p_filter );
244 if( !p_spu ) return NULL;
246 memset( &fmt, 0, sizeof(video_format_t) );
247 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
249 fmt.i_width = fmt.i_height = 0;
252 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
253 if( !p_spu->p_region )
255 p_filter->pf_sub_buffer_del( p_filter, p_spu );
259 t = p_sys->last_time = time( NULL );
261 p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
262 p_spu->i_start = date;
263 p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
264 p_spu->b_ephemer = VLC_TRUE;
266 /* where to locate the string: */
267 if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
268 { /* set to one of the 9 relative locations */
269 p_spu->i_flags = p_sys->i_pos;
272 p_spu->b_absolute = VLC_FALSE;
275 { /* set to an absolute xy, referenced to upper left corner */
276 p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
277 p_spu->i_x = p_sys->i_xoff;
278 p_spu->i_y = p_sys->i_yoff;
279 p_spu->b_absolute = VLC_TRUE;
281 p_spu->p_region->p_style = p_sys->p_style;
283 p_sys->b_need_update = VLC_FALSE;
287 /**********************************************************************
288 * Callback to update params on the fly
289 **********************************************************************/
290 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
291 vlc_value_t oldval, vlc_value_t newval,
294 filter_sys_t *p_sys = (filter_sys_t *) p_data;
296 if( !strncmp( psz_var, "marq-marquee", 7 ) )
298 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
299 p_sys->psz_marquee = strdup( newval.psz_string );
301 else if ( !strncmp( psz_var, "marq-x", 6 ) )
303 p_sys->i_xoff = newval.i_int;
305 else if ( !strncmp( psz_var, "marq-y", 6 ) )
307 p_sys->i_yoff = newval.i_int;
309 else if ( !strncmp( psz_var, "marq-color", 8 ) ) /* "marq-col" */
311 p_sys->p_style->i_font_color = newval.i_int;
313 else if ( !strncmp( psz_var, "marq-opacity", 8 ) ) /* "marq-opa" */
315 p_sys->p_style->i_font_alpha = 255 - newval.i_int;
317 else if ( !strncmp( psz_var, "marq-size", 6 ) )
319 p_sys->p_style->i_font_size = newval.i_int;
321 else if ( !strncmp( psz_var, "marq-timeout", 12 ) )
323 p_sys->i_timeout = newval.i_int;
325 else if ( !strncmp( psz_var, "marq-position", 8 ) )
326 /* willing to accept a match against marq-pos */
328 p_sys->i_pos = newval.i_int;
329 p_sys->i_xoff = -1; /* force to relative positioning */
331 p_sys->b_need_update = VLC_TRUE;