1 /*****************************************************************************
2 * time.c : time display video plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2003-2004 VideoLAN
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
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., 59 Temple Place - Suite 330, Boston, MA 02111, 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 );
44 /*****************************************************************************
45 * filter_sys_t: time filter descriptor
46 *****************************************************************************/
49 int i_xoff, i_yoff; /* offsets for the display string in the video window */
50 char *psz_format; /* time format string */
55 #define MSG_TEXT N_("Time format string (%Y%m%d %H%M%S)")
56 #define MSG_LONGTEXT N_("Time format string (%Y = year, %m = month, %d = day, %H = hour, %M = minute, %S = second")
57 #define POSX_TEXT N_("X offset, from left")
58 #define POSX_LONGTEXT N_("X offset, from the left screen edge" )
59 #define POSY_TEXT N_("Y offset, from the top")
60 #define POSY_LONGTEXT N_("Y offset, down from the top" )
62 /*****************************************************************************
64 *****************************************************************************/
66 set_capability( "sub filter", 0 );
67 set_callbacks( CreateFilter, DestroyFilter );
68 add_string( "time-format", "%Y-%m-%d %H:%M:%S", NULL, MSG_TEXT, MSG_LONGTEXT, VLC_FALSE );
69 add_integer( "time-x", 0, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
70 add_integer( "time-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
71 set_description( _("Time display sub filter") );
72 add_shortcut( "time" );
75 /*****************************************************************************
76 * CreateFilter: allocates logo video filter
77 *****************************************************************************/
78 static int CreateFilter( vlc_object_t *p_this )
80 filter_t *p_filter = (filter_t *)p_this;
84 /* Allocate structure */
85 p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
88 msg_Err( p_filter, "out of memory" );
92 var_Create( p_this, "time-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
93 var_Get( p_filter, "time-x", &val );
94 p_sys->i_xoff = val.i_int;
95 var_Create( p_this, "time-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
96 var_Get( p_filter, "time-y", &val );
97 p_sys->i_yoff = val.i_int;
98 p_sys->psz_format = var_CreateGetString( p_this, "time-format" );
101 p_filter->pf_sub_filter = Filter;
102 p_sys->last_time = ((time_t)-1);
106 /*****************************************************************************
107 * DestroyFilter: destroy logo video filter
108 *****************************************************************************/
109 static void DestroyFilter( vlc_object_t *p_this )
111 filter_t *p_filter = (filter_t *)p_this;
112 filter_sys_t *p_sys = p_filter->p_sys;
114 if( p_sys->psz_format ) free( p_sys->psz_format );
119 static char *FormatTime(char *tformat, time_t *t )
123 #if defined(HAVE_LOCALTIME_R)
129 /* Get the current time. */
130 curtime = time( NULL );
132 /* Convert it to local time representation. */
133 #if defined(HAVE_LOCALTIME_R)
134 localtime_r( &curtime, &loctime );
135 strftime( buffer, 255, tformat, &loctime );
137 loctime = localtime( &curtime );
138 strftime( buffer, 255, tformat, loctime );
140 return strdup( buffer );
143 /****************************************************************************
144 * Filter: the whole thing
145 ****************************************************************************
146 * This function outputs subpictures at regular time intervals.
147 ****************************************************************************/
148 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
150 filter_sys_t *p_sys = p_filter->p_sys;
155 if( p_sys->last_time == time( NULL ) ) return NULL;
157 p_spu = p_filter->pf_sub_buffer_new( p_filter );
158 if( !p_spu ) return NULL;
160 memset( &fmt, 0, sizeof(video_format_t) );
161 fmt.i_chroma = VLC_FOURCC('T','E','X','T');
163 fmt.i_width = fmt.i_height = 0;
167 p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
168 if( !p_spu->p_region )
170 p_filter->pf_sub_buffer_del( p_filter, p_spu );
174 t = p_sys->last_time = time( NULL );
176 p_spu->p_region->psz_text = FormatTime( p_sys->psz_format, &t );
177 p_spu->i_start = date;
179 p_spu->b_ephemer = VLC_TRUE;
180 p_spu->b_absolute = VLC_FALSE;
181 p_spu->i_x = p_sys->i_xoff;
182 p_spu->i_y = p_sys->i_yoff;
184 p_spu->i_flags = OSD_ALIGN_LEFT|OSD_ALIGN_TOP ;