1 /*****************************************************************************
2 * time.c : time display video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2003-2005 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
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() */
35 #include "vlc_filter.h"
36 #include "vlc_block.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 );
45 static int TimeCallback( 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: time filter descriptor
60 *****************************************************************************/
63 int i_xoff, i_yoff; /* offsets for the display string in the video window */
64 char *psz_format; /* time format string */
65 int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
66 text_style_t *p_style; /* font control */
71 #define MSG_TEXT N_("Time format string (%Y%m%d %H%M%S)")
72 #define MSG_LONGTEXT N_("Time format string (%Y = year, %m = month, %d = day, %H = hour, %M = minute, %S = second).")
73 #define POSX_TEXT N_("X offset")
74 #define POSX_LONGTEXT N_("X offset, from the left screen edge" )
75 #define POSY_TEXT N_("Y offset")
76 #define POSY_LONGTEXT N_("Y offset, down from the top" )
77 #define OPACITY_TEXT N_("Opacity")
78 #define OPACITY_LONGTEXT N_("Opacity (inverse of transparency) of " \
79 "overlay text. 0 = transparent, 255 = totally opaque." )
81 #define SIZE_TEXT N_("Font size, pixels")
82 #define SIZE_LONGTEXT N_("Font size, in pixels. Default is -1 (use default " \
85 #define COLOR_TEXT N_("Color")
86 #define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
87 "the video. This must be an hexadecimal (like HTML colors). The first two "\
88 "chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
89 " #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
91 #define POS_TEXT N_("Text position")
92 #define POS_LONGTEXT N_( \
93 "You can enforce the text position on the video " \
94 "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
95 "also use combinations of these values, e.g. 6 = top-right).")
97 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
98 static char *ppsz_pos_descriptions[] =
99 { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
100 N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
102 /*****************************************************************************
104 *****************************************************************************/
106 set_capability( "sub filter", 0 );
107 set_shortname( N_("Time overlay"));
108 set_category( CAT_VIDEO );
109 set_subcategory( SUBCAT_VIDEO_SUBPIC );
110 set_callbacks( CreateFilter, DestroyFilter );
111 add_string( "time-format", "%Y-%m-%d %H:%M:%S", NULL, MSG_TEXT,
112 MSG_LONGTEXT, VLC_TRUE );
113 add_integer( "time-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
114 add_integer( "time-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
115 add_integer( "time-position", 9, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
116 /* 9 sets the default to bottom-left, minimizing jitter */
117 change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
118 add_integer_with_range( "time-opacity", 255, 0, 255, NULL,
119 OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
120 add_integer( "time-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
122 change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
123 add_integer( "time-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
124 set_description( _("Time display sub filter") );
125 add_shortcut( "time" );
128 /*****************************************************************************
129 * CreateFilter: allocates time video filter
130 *****************************************************************************/
131 static int CreateFilter( vlc_object_t *p_this )
133 filter_t *p_filter = (filter_t *)p_this;
135 vlc_object_t *p_input;
137 /* Allocate structure */
138 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
141 msg_Err( p_filter, "out of memory" );
144 /* Hook used for callback variables */
145 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
151 p_sys->p_style = malloc( sizeof( text_style_t ) );
152 memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ) );
154 p_sys->i_xoff = var_CreateGetInteger( p_input->p_libvlc , "time-x" );
155 p_sys->i_yoff = var_CreateGetInteger( p_input->p_libvlc , "time-y" );
156 p_sys->psz_format = var_CreateGetString( p_input->p_libvlc, "time-format" );
157 p_sys->i_pos = var_CreateGetInteger( p_input->p_libvlc , "time-position" );
159 p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_input->p_libvlc , "time-opacity" );
160 p_sys->p_style->i_font_color = var_CreateGetInteger( p_input->p_libvlc , "time-color" );
161 p_sys->p_style->i_font_size = var_CreateGetInteger( p_input->p_libvlc , "time-size" );
163 var_AddCallback( p_input->p_libvlc, "time-x", TimeCallback, p_sys );
164 var_AddCallback( p_input->p_libvlc, "time-y", TimeCallback, p_sys );
165 var_AddCallback( p_input->p_libvlc, "time-format", TimeCallback, p_sys );
166 var_AddCallback( p_input->p_libvlc, "time-position", TimeCallback, p_sys );
167 var_AddCallback( p_input->p_libvlc, "time-color", TimeCallback, p_sys );
168 var_AddCallback( p_input->p_libvlc, "time-opacity", TimeCallback, p_sys );
169 var_AddCallback( p_input->p_libvlc, "time-size", TimeCallback, p_sys );
171 vlc_object_release( p_input );
174 p_filter->pf_sub_filter = Filter;
175 p_sys->last_time = ((time_t)-1);
179 /*****************************************************************************
180 * DestroyFilter: destroy logo video filter
181 *****************************************************************************/
182 static void DestroyFilter( vlc_object_t *p_this )
184 filter_t *p_filter = (filter_t *)p_this;
185 filter_sys_t *p_sys = p_filter->p_sys;
186 vlc_object_t *p_input;
188 if( p_sys->p_style ) free( p_sys->p_style );
189 if( p_sys->psz_format ) free( p_sys->psz_format );
191 /* Delete the time variables */
192 p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
197 var_Destroy( p_input->p_libvlc , "time-format" );
198 var_Destroy( p_input->p_libvlc , "time-x" );
199 var_Destroy( p_input->p_libvlc , "time-y" );
200 var_Destroy( p_input->p_libvlc , "time-position" );
201 var_Destroy( p_input->p_libvlc , "time-color");
202 var_Destroy( p_input->p_libvlc , "time-opacity");
203 var_Destroy( p_input->p_libvlc , "time-size");
205 vlc_object_release( p_input );
208 static char *FormatTime(char *tformat )
212 #if defined(HAVE_LOCALTIME_R)
218 /* Get the current time. */
219 curtime = time( NULL );
221 /* Convert it to local time representation. */
222 #if defined(HAVE_LOCALTIME_R)
223 localtime_r( &curtime, &loctime );
224 strftime( buffer, 255, tformat, &loctime );
226 loctime = localtime( &curtime );
227 strftime( buffer, 255, tformat, loctime );
229 return strdup( buffer );
232 /****************************************************************************
233 * Filter: the whole thing
234 ****************************************************************************
235 * This function outputs subpictures at regular time intervals.
236 ****************************************************************************/
237 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
239 filter_sys_t *p_sys = p_filter->p_sys;
243 if( p_sys->last_time == time( NULL ) ) return NULL;
245 p_spu = p_filter->pf_sub_buffer_new( p_filter );
246 if( !p_spu ) return NULL;
248 memset( &fmt, 0, sizeof(video_format_t) );
249 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
251 fmt.i_width = fmt.i_height = 0;
254 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
255 if( !p_spu->p_region )
257 p_filter->pf_sub_buffer_del( p_filter, p_spu );
261 p_sys->last_time = time( NULL );
263 p_spu->p_region->psz_text = FormatTime( p_sys->psz_format );
264 p_spu->i_start = date;
266 p_spu->b_ephemer = VLC_TRUE;
268 /* where to locate the string: */
269 if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
270 { /* set to one of the 9 relative locations */
271 p_spu->i_flags = p_sys->i_pos;
274 p_spu->b_absolute = VLC_FALSE;
277 { /* set to an absolute xy, referenced to upper left corner */
278 p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
279 p_spu->i_x = p_sys->i_xoff;
280 p_spu->i_y = p_sys->i_yoff;
281 p_spu->b_absolute = VLC_TRUE;
283 p_spu->p_region->p_style = p_sys->p_style;
287 /**********************************************************************
288 * Callback to update params on the fly
289 **********************************************************************/
290 static int TimeCallback( 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, "time-format", 11 ) )
298 if( p_sys->psz_format ) free( p_sys->psz_format );
299 p_sys->psz_format = strdup( newval.psz_string );
301 else if ( !strncmp( psz_var, "time-x", 6 ) )
303 p_sys->i_xoff = newval.i_int;
305 else if ( !strncmp( psz_var, "time-y", 6 ) )
307 p_sys->i_yoff = newval.i_int;
309 else if ( !strncmp( psz_var, "time-color", 8 ) ) /* "time-c" */
311 p_sys->p_style->i_font_color = newval.i_int;
313 else if ( !strncmp( psz_var, "time-opacity", 8 ) ) /* "time-o" */
315 p_sys->p_style->i_font_alpha = 255 - newval.i_int;
317 else if ( !strncmp( psz_var, "time-size", 6 ) )
319 p_sys->p_style->i_font_size = newval.i_int;
321 else if ( !strncmp( psz_var, "time-position", 8 ) )
322 /* willing to accept a match against time-pos */
324 p_sys->i_pos = newval.i_int;
325 p_sys->i_xoff = -1; /* force to relative positioning */