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/*****************************************************************************
* t140.c : trivial T.140 text encoder
*****************************************************************************
* Copyright © 2007 Rémi Denis-Courmont
* $Id$
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define VLC_MODULE_LICENSE VLC_LICENSE_GPL_2_PLUS
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_codec.h>
#include <vlc_sout.h>
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin ()
set_description( N_("T.140 text encoder") )
set_capability( "encoder", 100 )
set_callbacks( Open, Close )
vlc_module_end ()
static block_t *Encode ( encoder_t *, subpicture_t * );
static int Open( vlc_object_t *p_this )
{
encoder_t *p_enc = (encoder_t *)p_this;
switch( p_enc->fmt_out.i_codec )
{
case VLC_CODEC_SUBT:
if( ( p_enc->fmt_out.subs.psz_encoding != NULL )
&& strcasecmp( p_enc->fmt_out.subs.psz_encoding, "utf8" )
&& strcasecmp( p_enc->fmt_out.subs.psz_encoding, "UTF-8" ) )
{
msg_Err( p_this, "Only UTF-8 encoding supported" );
return VLC_EGENERIC;
}
case VLC_CODEC_ITU_T140:
break;
default:
if( !p_enc->obj.force )
return VLC_EGENERIC;
p_enc->fmt_out.i_codec = VLC_CODEC_ITU_T140;
}
p_enc->p_sys = NULL;
p_enc->pf_encode_sub = Encode;
p_enc->fmt_out.i_cat = SPU_ES;
return VLC_SUCCESS;
}
static void Close( vlc_object_t *p_this )
{
(void)p_this;
}
static block_t *Encode( encoder_t *p_enc, subpicture_t *p_spu )
{
VLC_UNUSED( p_enc );
subpicture_region_t *p_region;
block_t *p_block;
size_t len;
if( p_spu == NULL )
return NULL;
p_region = p_spu->p_region;
if( ( p_region == NULL )
|| ( p_region->fmt.i_chroma != VLC_CODEC_TEXT )
|| ( p_region->p_text == NULL )
|| ( p_region->p_text->psz_text == NULL) )
return NULL;
/* This should already be UTF-8 encoded, so not much effort... */
len = strlen( p_region->p_text->psz_text );
p_block = block_Alloc( len );
memcpy( p_block->p_buffer, p_region->p_text->psz_text, len );
p_block->i_pts = p_block->i_dts = p_spu->i_start;
if( !p_spu->b_ephemer && ( p_spu->i_stop > p_spu->i_start ) )
p_block->i_length = p_spu->i_stop - p_spu->i_start;
return p_block;
}
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