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>
41 #include <vlc_strings.h>
43 /*****************************************************************************
45 *****************************************************************************/
46 static int CreateFilter ( vlc_object_t * );
47 static void DestroyFilter( vlc_object_t * );
48 static subpicture_t *Filter( filter_t *, mtime_t );
50 static char *MarqueeReadFile( filter_t *, const char * );
51 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
52 vlc_value_t oldval, vlc_value_t newval,
54 static const int pi_color_values[] = {
55 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
56 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
57 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
58 0x00000080, 0x000000FF, 0x0000FFFF};
59 static const char *const ppsz_color_descriptions[] = {
60 N_("Default"), N_("Black"), N_("Gray"),
61 N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
62 N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
63 N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
66 /*****************************************************************************
67 * filter_sys_t: marquee filter descriptor
68 *****************************************************************************/
73 int i_xoff, i_yoff; /* offsets for the display string in the video window */
74 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
77 char *format; /**< marquee text format */
78 char *filepath; /**< marquee file path */
79 char *message; /**< marquee plain text */
81 text_style_t *p_style; /* font control */
87 #define MSG_TEXT N_("Text")
88 #define MSG_LONGTEXT N_( \
89 "Marquee text to display. " \
90 "(Available format strings: " \
91 "Time related: %Y = year, %m = month, %d = day, %H = hour, " \
92 "%M = minute, %S = second, ... " \
93 "Meta data related: $a = artist, $b = album, $c = copyright, " \
94 "$d = description, $e = encoded by, $g = genre, " \
95 "$l = language, $n = track num, $p = now playing, " \
96 "$r = rating, $s = subtitles language, $t = title, "\
97 "$u = url, $A = date, " \
98 "$B = audio bitrate (in kb/s), $C = chapter," \
99 "$D = duration, $F = full name with path, $I = title, "\
101 "$N = name, $O = audio language, $P = position (in %), $R = rate, " \
102 "$S = audio sample rate (in kHz), " \
103 "$T = time, $U = publisher, $V = volume, $_ = new line) ")
104 #define FILE_TEXT N_("Text file")
105 #define FILE_LONGTEXT N_("File to read the marquee text from.")
106 #define POSX_TEXT N_("X offset")
107 #define POSX_LONGTEXT N_("X offset, from the left screen edge." )
108 #define POSY_TEXT N_("Y offset")
109 #define POSY_LONGTEXT N_("Y offset, down from the top." )
110 #define TIMEOUT_TEXT N_("Timeout")
111 #define TIMEOUT_LONGTEXT N_("Number of milliseconds the marquee must remain " \
112 "displayed. Default value is " \
113 "0 (remains forever).")
114 #define REFRESH_TEXT N_("Refresh period in ms")
115 #define REFRESH_LONGTEXT N_("Number of milliseconds between string updates. " \
116 "This is mainly useful when using meta data " \
117 "or time format string sequences.")
118 #define OPACITY_TEXT N_("Opacity")
119 #define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
120 "overlayed text. 0 = transparent, 255 = totally opaque. " )
121 #define SIZE_TEXT N_("Font size, pixels")
122 #define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
125 #define COLOR_TEXT N_("Color")
126 #define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
127 "the video. This must be an hexadecimal (like HTML colors). The first two "\
128 "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
129 " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
131 #define POS_TEXT N_("Marquee position")
132 #define POS_LONGTEXT N_( \
133 "You can enforce the marquee position on the video " \
134 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
135 "also use combinations of these values, eg 6 = top-right).")
137 static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
138 static const char *const ppsz_pos_descriptions[] =
139 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
140 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
142 #define CFG_PREFIX "marq-"
144 #define MARQUEE_HELP N_("Display text above the video")
146 /*****************************************************************************
148 *****************************************************************************/
150 set_capability( "sub source", 0 )
151 set_shortname( N_("Marquee" ))
152 set_description( N_("Marquee display") )
153 set_help(MARQUEE_HELP)
154 set_callbacks( CreateFilter, DestroyFilter )
155 set_category( CAT_VIDEO )
156 set_subcategory( SUBCAT_VIDEO_SUBPIC )
157 add_string( CFG_PREFIX "marquee", "VLC", MSG_TEXT, MSG_LONGTEXT,
159 add_loadfile( CFG_PREFIX "file", NULL, FILE_TEXT, FILE_LONGTEXT, true )
161 set_section( N_("Position"), NULL )
162 add_integer( CFG_PREFIX "x", 0, POSX_TEXT, POSX_LONGTEXT, true )
163 add_integer( CFG_PREFIX "y", 0, POSY_TEXT, POSY_LONGTEXT, true )
164 add_integer( CFG_PREFIX "position", -1, POS_TEXT, POS_LONGTEXT, false )
165 change_integer_list( pi_pos_values, ppsz_pos_descriptions )
167 set_section( N_("Font"), NULL )
168 /* 5 sets the default to top [1] left [4] */
169 add_integer_with_range( CFG_PREFIX "opacity", 255, 0, 255,
170 OPACITY_TEXT, OPACITY_LONGTEXT, false )
171 add_rgb( CFG_PREFIX "color", 0xFFFFFF, COLOR_TEXT, COLOR_LONGTEXT,
173 change_integer_list( pi_color_values, ppsz_color_descriptions )
174 add_integer( CFG_PREFIX "size", -1, SIZE_TEXT, SIZE_LONGTEXT,
176 change_integer_range( -1, 4096)
178 set_section( N_("Misc"), NULL )
179 add_integer( CFG_PREFIX "timeout", 0, TIMEOUT_TEXT, TIMEOUT_LONGTEXT,
181 add_integer( CFG_PREFIX "refresh", 1000, REFRESH_TEXT,
182 REFRESH_LONGTEXT, false )
184 add_shortcut( "time" )
187 static const char *const ppsz_filter_options[] = {
188 "marquee", "x", "y", "position", "color", "size", "timeout", "refresh",
193 /*****************************************************************************
194 * CreateFilter: allocates marquee video filter
195 *****************************************************************************/
196 static int CreateFilter( vlc_object_t *p_this )
198 filter_t *p_filter = (filter_t *)p_this;
201 /* Allocate structure */
202 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
206 vlc_mutex_init( &p_sys->lock );
207 p_sys->p_style = text_style_New();
209 config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
213 #define CREATE_VAR( stor, type, var ) \
214 p_sys->stor = var_CreateGet##type##Command( p_filter, var ); \
215 var_AddCallback( p_filter, var, MarqueeCallback, p_sys );
217 CREATE_VAR( i_xoff, Integer, "marq-x" );
218 CREATE_VAR( i_yoff, Integer, "marq-y" );
219 CREATE_VAR( i_timeout,Integer, "marq-timeout" );
220 p_sys->i_refresh = 1000 * var_CreateGetIntegerCommand( p_filter,
222 var_AddCallback( p_filter, "marq-refresh", MarqueeCallback, p_sys );
223 CREATE_VAR( i_pos, Integer, "marq-position" );
224 CREATE_VAR( format, String, "marq-marquee" );
225 p_sys->filepath = var_InheritString( p_filter, "marq-file" );
226 p_sys->message = NULL;
227 p_sys->p_style->i_font_alpha = var_CreateGetIntegerCommand( p_filter,
229 var_AddCallback( p_filter, "marq-opacity", MarqueeCallback, p_sys );
230 CREATE_VAR( p_style->i_font_color, Integer, "marq-color" );
231 CREATE_VAR( p_style->i_font_size, Integer, "marq-size" );
234 p_filter->pf_sub_source = Filter;
235 p_sys->last_time = 0;
239 /*****************************************************************************
240 * DestroyFilter: destroy marquee video filter
241 *****************************************************************************/
242 static void DestroyFilter( vlc_object_t *p_this )
244 filter_t *p_filter = (filter_t *)p_this;
245 filter_sys_t *p_sys = p_filter->p_sys;
247 /* Delete the marquee variables */
248 #define DEL_VAR(var) \
249 var_DelCallback( p_filter, var, MarqueeCallback, p_sys ); \
250 var_Destroy( p_filter, var );
253 DEL_VAR( "marq-timeout" );
254 DEL_VAR( "marq-refresh" );
255 DEL_VAR( "marq-position" );
256 DEL_VAR( "marq-marquee" );
257 DEL_VAR( "marq-opacity" );
258 DEL_VAR( "marq-color" );
259 DEL_VAR( "marq-size" );
261 vlc_mutex_destroy( &p_sys->lock );
262 text_style_Delete( p_sys->p_style );
263 free( p_sys->format );
264 free( p_sys->filepath );
265 free( p_sys->message );
269 /****************************************************************************
270 * Filter: the whole thing
271 ****************************************************************************
272 * This function outputs subpictures at regular time intervals.
273 ****************************************************************************/
274 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
276 filter_sys_t *p_sys = p_filter->p_sys;
277 subpicture_t *p_spu = NULL;
280 vlc_mutex_lock( &p_sys->lock );
281 if( p_sys->last_time + p_sys->i_refresh > date )
284 if( p_sys->filepath != NULL )
286 char *fmt = MarqueeReadFile( p_filter, p_sys->filepath );
289 free( p_sys->format );
294 char *msg = str_format( p_filter, p_sys->format ? p_sys->format : "" );
295 if( unlikely( msg == NULL ) )
297 if( p_sys->message != NULL && !strcmp( msg, p_sys->message ) )
302 free( p_sys->message );
303 p_sys->message = msg;
305 p_spu = filter_NewSubpicture( p_filter );
309 memset( &fmt, 0, sizeof(video_format_t) );
310 fmt.i_chroma = VLC_CODEC_TEXT;
311 fmt.i_width = fmt.i_height = 0;
314 p_spu->p_region = subpicture_region_New( &fmt );
315 if( !p_spu->p_region )
317 p_filter->pf_sub_buffer_del( p_filter, p_spu );
322 p_sys->last_time = date;
324 p_spu->p_region->psz_text = strdup( msg );
325 p_spu->i_start = date;
326 p_spu->i_stop = p_sys->i_timeout == 0 ? 0 : date + p_sys->i_timeout * 1000;
327 p_spu->b_ephemer = true;
329 /* where to locate the string: */
330 if( p_sys->i_pos < 0 )
331 { /* set to an absolute xy */
332 p_spu->p_region->i_align = SUBPICTURE_ALIGN_LEFT | SUBPICTURE_ALIGN_TOP;
333 p_spu->b_absolute = true;
336 { /* set to one of the 9 relative locations */
337 p_spu->p_region->i_align = p_sys->i_pos;
338 p_spu->b_absolute = false;
341 p_spu->p_region->i_x = p_sys->i_xoff;
342 p_spu->p_region->i_y = p_sys->i_yoff;
344 p_spu->p_region->p_style = text_style_Duplicate( p_sys->p_style );
347 vlc_mutex_unlock( &p_sys->lock );
351 static char *MarqueeReadFile( filter_t *obj, const char *path )
353 FILE *stream = vlc_fopen( path, "rt" );
356 msg_Err( obj, "cannot open %s: %m", path );
362 ssize_t len = getline( &line, &(size_t){ 0 }, stream );
365 msg_Err( obj, "cannot read %s: %m", path );
371 if( len >= 1 && line[len - 1] == '\n' )
376 /**********************************************************************
377 * Callback to update params on the fly
378 **********************************************************************/
379 static int MarqueeCallback( vlc_object_t *p_this, char const *psz_var,
380 vlc_value_t oldval, vlc_value_t newval,
383 filter_sys_t *p_sys = (filter_sys_t *) p_data;
388 vlc_mutex_lock( &p_sys->lock );
389 if( !strcmp( psz_var, "marq-marquee" ) )
391 free( p_sys->format );
392 p_sys->format = strdup( newval.psz_string );
394 else if ( !strcmp( psz_var, "marq-x" ) )
396 p_sys->i_xoff = newval.i_int;
398 else if ( !strcmp( psz_var, "marq-y" ) )
400 p_sys->i_yoff = newval.i_int;
402 else if ( !strcmp( psz_var, "marq-color" ) )
404 p_sys->p_style->i_font_color = newval.i_int;
406 else if ( !strcmp( psz_var, "marq-opacity" ) )
408 p_sys->p_style->i_font_alpha = newval.i_int;
410 else if ( !strcmp( psz_var, "marq-size" ) )
412 p_sys->p_style->i_font_size = newval.i_int;
414 else if ( !strcmp( psz_var, "marq-timeout" ) )
416 p_sys->i_timeout = newval.i_int;
418 else if ( !strcmp( psz_var, "marq-refresh" ) )
420 p_sys->i_refresh = newval.i_int * 1000;
422 else if ( !strcmp( psz_var, "marq-position" ) )
423 /* willing to accept a match against marq-pos */
425 p_sys->i_pos = newval.i_int;
426 p_sys->i_xoff = -1; /* force to relative positioning */
429 free( p_sys->message );
430 p_sys->message = NULL; /* force update */
432 vlc_mutex_unlock( &p_sys->lock );