Commit 196d6b5a authored by sigmunau's avatar sigmunau
Browse files

time.c: a small module to place current time on top of video

parent 86dcb649
/*****************************************************************************
* time.c : time display video plugin for vlc
*****************************************************************************
* Copyright (C) 2003-2004 VideoLAN
* $Id: logo.c 8721 2004-09-17 10:21:00Z gbazin $
*
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h>
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include "vlc_filter.h"
#include "filter_common.h"
#include "vlc_block.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int CreateFilter ( vlc_object_t * );
static void DestroyFilter( vlc_object_t * );
static subpicture_t *Filter( filter_t *, mtime_t );
/*****************************************************************************
* filter_sys_t: time filter descriptor
*****************************************************************************/
struct filter_sys_t
{
picture_t *p_pic;
int i_width, i_height;
int posx, posy;
mtime_t i_last_date;
filter_t *p_text;
};
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_capability( "sub filter", 0 );
set_callbacks( CreateFilter, DestroyFilter );
set_description( _("Logo sub filter") );
add_shortcut( "logo" );
vlc_module_end();
/*****************************************************************************
* CreateFilter: allocates logo video filter
*****************************************************************************/
static int CreateFilter( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
/* Allocate structure */
p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_sys == NULL )
{
msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
/* Misc init */
p_filter->pf_sub_filter = Filter;
return VLC_SUCCESS;
}
/*****************************************************************************
* DestroyFilter: destroy logo video filter
*****************************************************************************/
static void DestroyFilter( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
free( p_sys );
}
char *myCtime( time_t *t )
{
#ifdef HAVE_CTIME_R
char tmp[27];
ctime_r( t, tmp );
return strdup( tmp );
#else
return strdup(ctime(t));
#endif
}
/****************************************************************************
* Filter: the whole thing
****************************************************************************
* This function outputs subpictures at regular time intervals.
****************************************************************************/
static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
{
filter_sys_t *p_sys = p_filter->p_sys;
subpicture_t *p_spu;
subpicture_region_t *p_region;
video_format_t fmt;
time_t t;
p_spu = p_filter->pf_sub_buffer_new( p_filter );
if( !p_spu ) return NULL;
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('T','E','X','T');
fmt.i_aspect = 0;
fmt.i_width = fmt.i_height = 0;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
if( !p_spu->p_region )
{
p_filter->pf_sub_buffer_del( p_filter, p_spu );
return NULL;
}
t = time(NULL);
p_spu->p_region->psz_text = myCtime(&t);
p_spu->i_start = date;
p_spu->i_stop = date + 1000000;
p_spu->b_ephemer = VLC_TRUE;
p_spu->b_absolute = VLC_FALSE;
p_spu->i_x = 10;
p_spu->i_y = 10;
p_spu->i_flags = 0;
return p_spu;
}
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