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 *****************************************************************************/
34 #include <vlc_common.h>
35 #include <vlc_plugin.h>
37 #include <vlc_filter.h>
38 #include <vlc_block.h>
40 #include <vlc_strings.h>
42 /*****************************************************************************
44 *****************************************************************************/
45 static int CreateFilter ( vlc_object_t * );
46 static void DestroyFilter( vlc_object_t * );
47 static subpicture_t *Filter( filter_t *, mtime_t );
50 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
51 vlc_value_t oldval, vlc_value_t newval,
53 static const int pi_color_values[] = {
54 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
55 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
56 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
57 0x00000080, 0x000000FF, 0x0000FFFF};
58 static const char *const ppsz_color_descriptions[] = {
59 N_("Default"), N_("Black"), N_("Gray"),
60 N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
61 N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
62 N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
65 /*****************************************************************************
66 * filter_sys_t: marquee filter descriptor
67 *****************************************************************************/
72 int i_xoff, i_yoff; /* offsets for the display string in the video window */
73 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
76 char *psz_marquee; /* marquee string */
78 text_style_t *p_style; /* font control */
86 #define MSG_TEXT N_("Text")
87 #define MSG_LONGTEXT N_( \
88 "Marquee text to display. " \
89 "(Available format strings: " \
90 "Time related: %Y = year, %m = month, %d = day, %H = hour, " \
91 "%M = minute, %S = second, ... " \
92 "Meta data related: $a = artist, $b = album, $c = copyright, " \
93 "$d = description, $e = encoded by, $g = genre, " \
94 "$l = language, $n = track num, $p = now playing, " \
95 "$r = rating, $s = subtitles language, $t = title, "\
96 "$u = url, $A = date, " \
97 "$B = audio bitrate (in kb/s), $C = chapter," \
98 "$D = duration, $F = full name with path, $I = title, "\
100 "$N = name, $O = audio language, $P = position (in %), $R = rate, " \
101 "$S = audio sample rate (in kHz), " \
102 "$T = time, $U = publisher, $V = volume, $_ = new line) ")
103 #define POSX_TEXT N_("X offset")
104 #define POSX_LONGTEXT N_("X offset, from the left screen edge." )
105 #define POSY_TEXT N_("Y offset")
106 #define POSY_LONGTEXT N_("Y offset, down from the top." )
107 #define TIMEOUT_TEXT N_("Timeout")
108 #define TIMEOUT_LONGTEXT N_("Number of milliseconds the marquee must remain " \
109 "displayed. Default value is " \
110 "0 (remains forever).")
111 #define REFRESH_TEXT N_("Refresh period in ms")
112 #define REFRESH_LONGTEXT N_("Number of milliseconds between string updates. " \
113 "This is mainly useful when using meta data " \
114 "or time format string sequences.")
115 #define OPACITY_TEXT N_("Opacity")
116 #define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
117 "overlayed text. 0 = transparent, 255 = totally opaque. " )
118 #define SIZE_TEXT N_("Font size, pixels")
119 #define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
122 #define COLOR_TEXT N_("Color")
123 #define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
124 "the video. This must be an hexadecimal (like HTML colors). The first two "\
125 "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
126 " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
128 #define POS_TEXT N_("Marquee position")
129 #define POS_LONGTEXT N_( \
130 "You can enforce the marquee position on the video " \
131 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
132 "also use combinations of these values, eg 6 = top-right).")
134 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
135 static const char *const ppsz_pos_descriptions[] =
136 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
137 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
139 #define CFG_PREFIX "marq-"
141 #define MARQUEE_HELP N_("Display text above the video")
143 /*****************************************************************************
145 *****************************************************************************/
147 set_capability( "sub source", 0 )
148 set_shortname( N_("Marquee" ))
149 set_description( N_("Marquee display") )
150 set_help(MARQUEE_HELP)
151 set_callbacks( CreateFilter, DestroyFilter )
152 set_category( CAT_VIDEO )
153 set_subcategory( SUBCAT_VIDEO_SUBPIC )
154 add_string( CFG_PREFIX "marquee", "VLC", MSG_TEXT, MSG_LONGTEXT,
157 set_section( N_("Position"), NULL )
158 add_integer( CFG_PREFIX "x", 0, POSX_TEXT, POSX_LONGTEXT, true )
159 add_integer( CFG_PREFIX "y", 0, POSY_TEXT, POSY_LONGTEXT, true )
160 add_integer( CFG_PREFIX "position", -1, POS_TEXT, POS_LONGTEXT, false )
161 change_integer_list( pi_pos_values, ppsz_pos_descriptions )
163 set_section( N_("Font"), NULL )
164 /* 5 sets the default to top [1] left [4] */
165 add_integer_with_range( CFG_PREFIX "opacity", 255, 0, 255,
166 OPACITY_TEXT, OPACITY_LONGTEXT, false )
167 add_rgb( CFG_PREFIX "color", 0xFFFFFF, COLOR_TEXT, COLOR_LONGTEXT,
169 change_integer_list( pi_color_values, ppsz_color_descriptions )
170 add_integer( CFG_PREFIX "size", -1, SIZE_TEXT, SIZE_LONGTEXT,
172 change_integer_range( -1, 4096)
174 set_section( N_("Misc"), NULL )
175 add_integer( CFG_PREFIX "timeout", 0, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
177 add_integer( CFG_PREFIX "refresh", 1000, REFRESH_TEXT,
178 REFRESH_LONGTEXT, false )
180 add_shortcut( "time" )
183 static const char *const ppsz_filter_options[] = {
184 "marquee", "x", "y", "position", "color", "size", "timeout", "refresh",
189 /*****************************************************************************
190 * CreateFilter: allocates marquee video filter
191 *****************************************************************************/
192 static int CreateFilter( vlc_object_t *p_this )
194 filter_t *p_filter = (filter_t *)p_this;
197 /* Allocate structure */
198 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
202 vlc_mutex_init( &p_sys->lock );
203 p_sys->p_style = text_style_New();
205 config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
209 #define CREATE_VAR( stor, type, var ) \
210 p_sys->stor = var_CreateGet##type##Command( p_filter, var ); \
211 var_AddCallback( p_filter, var, MarqueeCallback, p_sys );
213 p_sys->b_need_update = true;
214 CREATE_VAR( i_xoff, Integer, "marq-x" );
215 CREATE_VAR( i_yoff, Integer, "marq-y" );
216 CREATE_VAR( i_timeout,Integer, "marq-timeout" );
217 p_sys->i_refresh = 1000 * var_CreateGetIntegerCommand( p_filter,
219 var_AddCallback( p_filter, "marq-refresh", MarqueeCallback, p_sys );
220 CREATE_VAR( i_pos, Integer, "marq-position" );
221 CREATE_VAR( psz_marquee, String, "marq-marquee" );
222 p_sys->p_style->i_font_alpha = var_CreateGetIntegerCommand( p_filter,
224 var_AddCallback( p_filter, "marq-opacity", MarqueeCallback, p_sys );
225 CREATE_VAR( p_style->i_font_color, Integer, "marq-color" );
226 CREATE_VAR( p_style->i_font_size, Integer, "marq-size" );
229 p_filter->pf_sub_source = Filter;
230 p_sys->last_time = 0;
234 /*****************************************************************************
235 * DestroyFilter: destroy marquee video filter
236 *****************************************************************************/
237 static void DestroyFilter( vlc_object_t *p_this )
239 filter_t *p_filter = (filter_t *)p_this;
240 filter_sys_t *p_sys = p_filter->p_sys;
242 /* Delete the marquee variables */
243 #define DEL_VAR(var) \
244 var_DelCallback( p_filter, var, MarqueeCallback, p_sys ); \
245 var_Destroy( p_filter, var );
248 DEL_VAR( "marq-timeout" );
249 DEL_VAR( "marq-refresh" );
250 DEL_VAR( "marq-position" );
251 DEL_VAR( "marq-marquee" );
252 DEL_VAR( "marq-opacity" );
253 DEL_VAR( "marq-color" );
254 DEL_VAR( "marq-size" );
256 vlc_mutex_destroy( &p_sys->lock );
257 text_style_Delete( p_sys->p_style );
258 free( p_sys->psz_marquee );
262 /****************************************************************************
263 * Filter: the whole thing
264 ****************************************************************************
265 * This function outputs subpictures at regular time intervals.
266 ****************************************************************************/
267 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
269 filter_sys_t *p_sys = p_filter->p_sys;
270 subpicture_t *p_spu = NULL;
273 vlc_mutex_lock( &p_sys->lock );
274 if( p_sys->last_time + p_sys->i_refresh > date )
276 if( !p_sys->b_need_update )
279 p_spu = filter_NewSubpicture( p_filter );
283 memset( &fmt, 0, sizeof(video_format_t) );
284 fmt.i_chroma = VLC_CODEC_TEXT;
285 fmt.i_width = fmt.i_height = 0;
288 p_spu->p_region = subpicture_region_New( &fmt );
289 if( !p_spu->p_region )
291 p_filter->pf_sub_buffer_del( p_filter, p_spu );
296 p_sys->last_time = date;
298 if( !strchr( p_sys->psz_marquee, '%' )
299 && !strchr( p_sys->psz_marquee, '$' ) )
300 p_sys->b_need_update = false;
302 p_spu->p_region->psz_text = str_format( p_filter, p_sys->psz_marquee );
303 p_spu->i_start = date;
304 p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
305 p_spu->b_ephemer = true;
307 /* where to locate the string: */
308 if( p_sys->i_pos < 0 )
309 { /* set to an absolute xy */
310 p_spu->p_region->i_align = SUBPICTURE_ALIGN_LEFT | SUBPICTURE_ALIGN_TOP;
311 p_spu->b_absolute = true;
314 { /* set to one of the 9 relative locations */
315 p_spu->p_region->i_align = p_sys->i_pos;
316 p_spu->b_absolute = false;
319 p_spu->p_region->i_x = p_sys->i_xoff;
320 p_spu->p_region->i_y = p_sys->i_yoff;
322 p_spu->p_region->p_style = text_style_Duplicate( p_sys->p_style );
325 vlc_mutex_unlock( &p_sys->lock );
329 /**********************************************************************
330 * Callback to update params on the fly
331 **********************************************************************/
332 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
333 vlc_value_t oldval, vlc_value_t newval,
336 filter_sys_t *p_sys = (filter_sys_t *) p_data;
341 vlc_mutex_lock( &p_sys->lock );
342 if( !strcmp( psz_var, "marq-marquee" ) )
344 free( p_sys->psz_marquee );
345 p_sys->psz_marquee = strdup( newval.psz_string );
347 else if ( !strcmp( psz_var, "marq-x" ) )
349 p_sys->i_xoff = newval.i_int;
351 else if ( !strcmp( psz_var, "marq-y" ) )
353 p_sys->i_yoff = newval.i_int;
355 else if ( !strcmp( psz_var, "marq-color" ) )
357 p_sys->p_style->i_font_color = newval.i_int;
359 else if ( !strcmp( psz_var, "marq-opacity" ) )
361 p_sys->p_style->i_font_alpha = newval.i_int;
363 else if ( !strcmp( psz_var, "marq-size" ) )
365 p_sys->p_style->i_font_size = newval.i_int;
367 else if ( !strcmp( psz_var, "marq-timeout" ) )
369 p_sys->i_timeout = newval.i_int;
371 else if ( !strcmp( psz_var, "marq-refresh" ) )
373 p_sys->i_refresh = newval.i_int * 1000;
375 else if ( !strcmp( psz_var, "marq-position" ) )
376 /* willing to accept a match against marq-pos */
378 p_sys->i_pos = newval.i_int;
379 p_sys->i_xoff = -1; /* force to relative positioning */
381 p_sys->b_need_update = true;
382 vlc_mutex_unlock( &p_sys->lock );