1 /*****************************************************************************
2 * marq.c : marquee display video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2003-2008 the VideoLAN team
7 * Authors: Mark Moriarty
8 * Sigmund Augdal Helberg <dnumgis@videolan.org>
9 * Antoine Cellerier <dionoea . videolan \ org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include "vlc_filter.h"
34 #include "vlc_block.h"
37 #include "vlc_strings.h"
39 /*****************************************************************************
41 *****************************************************************************/
42 static int CreateFilter ( vlc_object_t * );
43 static void DestroyFilter( vlc_object_t * );
44 static subpicture_t *Filter( filter_t *, mtime_t );
47 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
48 vlc_value_t oldval, vlc_value_t newval,
50 static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
51 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
52 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
53 0x00000080, 0x000000FF, 0x0000FFFF};
54 static const char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
55 N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
56 N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
57 N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
60 /*****************************************************************************
61 * filter_sys_t: marquee filter descriptor
62 *****************************************************************************/
65 int i_xoff, i_yoff; /* offsets for the display string in the video window */
66 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
69 char *psz_marquee; /* marquee string */
71 text_style_t *p_style; /* font control */
75 vlc_bool_t b_need_update;
78 #define MSG_TEXT N_("Text")
79 #define MSG_LONGTEXT N_( \
80 "Marquee text to display. " \
81 "(Available format strings: " \
82 "Time related: %Y = year, %m = month, %d = day, %H = hour, " \
83 "%M = minute, %S = second, ... " \
84 "Meta data related: $a = artist, $b = album, $c = copyright, " \
85 "$d = description, $e = encoded by, $g = genre, " \
86 "$l = language, $n = track num, $p = now playing, " \
87 "$r = rating, $s = subtitles language, $t = title, "\
88 "$u = url, $A = date, " \
89 "$B = audio bitrate (in kb/s), $C = chapter," \
90 "$D = duration, $F = full name with path, $I = title, "\
92 "$N = name, $O = audio language, $P = position (in %), $R = rate, " \
93 "$S = audio sample rate (in kHz), " \
94 "$T = time, $U = publisher, $V = volume, $_ = new line) ")
95 #define POSX_TEXT N_("X offset")
96 #define POSX_LONGTEXT N_("X offset, from the left screen edge." )
97 #define POSY_TEXT N_("Y offset")
98 #define POSY_LONGTEXT N_("Y offset, down from the top." )
99 #define TIMEOUT_TEXT N_("Timeout")
100 #define TIMEOUT_LONGTEXT N_("Number of milliseconds the marquee must remain " \
101 "displayed. Default value is " \
102 "0 (remains forever).")
103 #define OPACITY_TEXT N_("Opacity")
104 #define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
105 "overlayed text. 0 = transparent, 255 = totally opaque. " )
106 #define SIZE_TEXT N_("Font size, pixels")
107 #define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
110 #define COLOR_TEXT N_("Color")
111 #define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
112 "the video. This must be an hexadecimal (like HTML colors). The first two "\
113 "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
114 " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
116 #define POS_TEXT N_("Marquee position")
117 #define POS_LONGTEXT N_( \
118 "You can enforce the marquee position on the video " \
119 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
120 "also use combinations of these values, eg 6 = top-right).")
122 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
123 static const char *ppsz_pos_descriptions[] =
124 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
125 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
127 #define CFG_PREFIX "marq-"
129 /*****************************************************************************
131 *****************************************************************************/
133 set_capability( "sub filter", 0 );
134 set_shortname( _("Marquee" ));
135 set_callbacks( CreateFilter, DestroyFilter );
136 set_category( CAT_VIDEO );
137 set_subcategory( SUBCAT_VIDEO_SUBPIC );
138 add_string( CFG_PREFIX "marquee", "VLC", NULL, MSG_TEXT, MSG_LONGTEXT,
142 set_section( N_("Position"), NULL );
143 add_integer( CFG_PREFIX "x", 0, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
145 add_integer( CFG_PREFIX "y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
147 add_integer( CFG_PREFIX "position", -1, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
149 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
151 set_section( N_("Font"), NULL );
152 /* 5 sets the default to top [1] left [4] */
153 add_integer_with_range( CFG_PREFIX "opacity", 255, 0, 255, NULL,
154 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
156 add_integer( CFG_PREFIX "color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
159 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
160 add_integer( CFG_PREFIX "size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT,
164 set_section( N_("Misc"), NULL );
165 add_integer( CFG_PREFIX "timeout", 0, NULL, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
169 set_description( _("Marquee display") );
170 add_shortcut( "time" );
171 add_obsolete_string( "time-format" );
172 add_obsolete_string( "time-x" );
173 add_obsolete_string( "time-y" );
174 add_obsolete_string( "time-position" );
175 add_obsolete_string( "time-opacity" );
176 add_obsolete_string( "time-color" );
177 add_obsolete_string( "time-size" );
180 static const char *ppsz_filter_options[] = {
181 "marquee", "x", "y", "position", "color", "size", "timeout", NULL
184 /*****************************************************************************
185 * CreateFilter: allocates marquee video filter
186 *****************************************************************************/
187 static int CreateFilter( vlc_object_t *p_this )
189 filter_t *p_filter = (filter_t *)p_this;
192 /* Allocate structure */
193 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
196 msg_Err( p_filter, "out of memory" );
200 p_sys->p_style = malloc( sizeof( text_style_t ) );
201 memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ) );
203 config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
206 #define CREATE_VAR( stor, type, var ) \
207 p_sys->stor = var_CreateGet##type##Command( p_filter, var ); \
208 var_AddCallback( p_filter, var, MarqueeCallback, p_sys );
210 CREATE_VAR( i_xoff, Integer, "marq-x" );
211 CREATE_VAR( i_yoff, Integer, "marq-y" );
212 CREATE_VAR( i_timeout,Integer, "marq-timeout" );
213 CREATE_VAR( i_pos, Integer, "marq-position" );
214 CREATE_VAR( psz_marquee, String, "marq-marquee" );
215 CREATE_VAR( p_style->i_font_alpha, Integer, "marq-opacity" );
216 CREATE_VAR( p_style->i_font_color, Integer, "marq-color" );
217 CREATE_VAR( p_style->i_font_size, Integer, "marq-size" );
219 p_sys->p_style->i_font_alpha = 255 - p_sys->p_style->i_font_alpha ;
222 p_filter->pf_sub_filter = Filter;
223 p_sys->last_time = ((time_t)-1);
224 p_sys->b_need_update = VLC_TRUE;
228 /*****************************************************************************
229 * DestroyFilter: destroy marquee video filter
230 *****************************************************************************/
231 static void DestroyFilter( vlc_object_t *p_this )
233 filter_t *p_filter = (filter_t *)p_this;
234 filter_sys_t *p_sys = p_filter->p_sys;
236 if( p_sys->p_style ) free( p_sys->p_style );
237 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
239 /* Delete the marquee variables */
240 #define DEL_VAR(var) \
241 var_DelCallback( p_filter, var, MarqueeCallback, p_sys ); \
242 var_Destroy( p_filter, var );
245 DEL_VAR( "marq-marquee" );
246 DEL_VAR( "marq-timeout" );
247 DEL_VAR( "marq-position" );
248 DEL_VAR( "marq-color" );
249 DEL_VAR( "marq-opacity" );
250 DEL_VAR( "marq-size" );
255 /****************************************************************************
256 * Filter: the whole thing
257 ****************************************************************************
258 * This function outputs subpictures at regular time intervals.
259 ****************************************************************************/
260 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
262 filter_sys_t *p_sys = p_filter->p_sys;
267 if( p_sys->last_time == time( NULL ) )
272 if( p_sys->b_need_update == VLC_FALSE )
277 p_spu = p_filter->pf_sub_buffer_new( p_filter );
278 if( !p_spu ) return NULL;
280 memset( &fmt, 0, sizeof(video_format_t) );
281 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
283 fmt.i_width = fmt.i_height = 0;
286 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
287 if( !p_spu->p_region )
289 p_filter->pf_sub_buffer_del( p_filter, p_spu );
293 t = p_sys->last_time = time( NULL );
295 if( strchr( p_sys->psz_marquee, '%' ) || strchr( p_sys->psz_marquee, '$' ) )
297 p_sys->b_need_update = VLC_TRUE;
301 p_sys->b_need_update = VLC_FALSE;
303 p_spu->p_region->psz_text = str_format( p_filter, p_sys->psz_marquee );
304 p_spu->i_start = date;
305 p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
306 p_spu->b_ephemer = VLC_TRUE;
308 /* where to locate the string: */
309 if( p_sys->i_pos < 0 )
310 { /* set to an absolute xy */
311 p_spu->p_region->i_align = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
312 p_spu->b_absolute = VLC_TRUE;
315 { /* set to one of the 9 relative locations */
316 p_spu->p_region->i_align = p_sys->i_pos;
317 p_spu->b_absolute = VLC_FALSE;
320 p_spu->i_x = p_sys->i_xoff;
321 p_spu->i_y = p_sys->i_yoff;
323 p_spu->p_region->p_style = p_sys->p_style;
328 /**********************************************************************
329 * Callback to update params on the fly
330 **********************************************************************/
331 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
332 vlc_value_t oldval, vlc_value_t newval,
335 filter_sys_t *p_sys = (filter_sys_t *) p_data;
337 if( !strncmp( psz_var, "marq-marquee", 7 ) )
339 if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
340 p_sys->psz_marquee = strdup( newval.psz_string );
342 else if ( !strncmp( psz_var, "marq-x", 6 ) )
344 p_sys->i_xoff = newval.i_int;
346 else if ( !strncmp( psz_var, "marq-y", 6 ) )
348 p_sys->i_yoff = newval.i_int;
350 else if ( !strncmp( psz_var, "marq-color", 8 ) ) /* "marq-col" */
352 p_sys->p_style->i_font_color = newval.i_int;
354 else if ( !strncmp( psz_var, "marq-opacity", 8 ) ) /* "marq-opa" */
356 p_sys->p_style->i_font_alpha = 255 - newval.i_int;
358 else if ( !strncmp( psz_var, "marq-size", 6 ) )
360 p_sys->p_style->i_font_size = newval.i_int;
362 else if ( !strncmp( psz_var, "marq-timeout", 12 ) )
364 p_sys->i_timeout = newval.i_int;
366 else if ( !strncmp( psz_var, "marq-position", 8 ) )
367 /* willing to accept a match against marq-pos */
369 p_sys->i_pos = newval.i_int;
370 p_sys->i_xoff = -1; /* force to relative positioning */
372 p_sys->b_need_update = VLC_TRUE;