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/*****************************************************************************
* osd.c: transcoding stream output module (osd)
*****************************************************************************
* Copyright (C) 2003-2009 VLC authors and VideoLAN
* $Id: a7489ad02f97f2dde6037f6b1be4e27e59663963 $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
* Antoine Cellerier <dionoea at videolan dot org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include "transcode.h"
#include <vlc_spu.h>
#include <vlc_modules.h>
/*
* OSD menu
*/
int transcode_osd_new( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
id->p_decoder->fmt_in.i_cat = SPU_ES;
id->p_encoder->fmt_out.psz_language = strdup( "osd" );
if( p_sys->i_osdcodec != 0 || p_sys->psz_osdenc )
{
msg_Dbg( p_stream, "creating osdmenu transcoding from fcc=`%4.4s' "
"to fcc=`%4.4s'", (char*)&id->p_encoder->fmt_out.i_codec,
(char*)&p_sys->i_osdcodec );
/* Complete destination format */
id->p_encoder->fmt_out.i_codec = p_sys->i_osdcodec;
/* Open encoder */
es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
VLC_CODEC_YUVA );
id->p_encoder->fmt_in.psz_language = strdup( "osd" );
id->p_encoder->p_cfg = p_sys->p_osd_cfg;
id->p_encoder->p_module =
module_need( id->p_encoder, "encoder", p_sys->psz_osdenc, true );
if( !id->p_encoder->p_module )
{
msg_Err( p_stream, "cannot find spu encoder (%s)", p_sys->psz_osdenc );
goto error;
}
/* open output stream */
id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
id->b_transcode = true;
if( !id->id ) goto error;
}
else
{
msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
(char*)&id->p_decoder->fmt_out.i_codec );
id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_decoder->fmt_out );
id->b_transcode = false;
if( !id->id ) goto error;
}
if( !p_sys->p_spu )
p_sys->p_spu = spu_Create( p_stream );
return VLC_SUCCESS;
error:
msg_Err( p_stream, "starting osd encoding thread failed" );
if( id->p_encoder->p_module )
module_unneed( id->p_encoder, id->p_encoder->p_module );
p_sys->b_osd = false;
return VLC_EGENERIC;
}
void transcode_osd_close( sout_stream_t *p_stream, sout_stream_id_sys_t *id)
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
/* Close encoder */
if( id )
{
if( id->p_encoder->p_module )
module_unneed( id->p_encoder, id->p_encoder->p_module );
}
p_sys->b_osd = false;
}
int transcode_osd_process( sout_stream_t *p_stream, sout_stream_id_sys_t *id,
block_t *in, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
subpicture_t *p_subpic = NULL;
/* Check if we have a subpicture to send */
if( p_sys->p_spu && in->i_dts > VLC_TS_INVALID )
{
video_format_t fmt;
video_format_Init( &fmt, 0 );
video_format_Setup( &fmt, 0, 720, 576, 720, 576, 1, 1 );
p_subpic = spu_Render( p_sys->p_spu, NULL, &fmt, &fmt, in->i_dts, in->i_dts, false );
}
else
{
msg_Warn( p_stream, "spu channel not initialized, doing it now" );
if( !p_sys->p_spu )
p_sys->p_spu = spu_Create( p_stream );
}
if( p_subpic )
{
block_t *p_block = NULL;
if( p_sys->b_master_sync && p_sys->i_master_drift )
{
p_subpic->i_start -= p_sys->i_master_drift;
if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
}
p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
subpicture_Delete( p_subpic );
if( p_block )
{
p_block->i_dts = p_block->i_pts = in->i_dts;
block_ChainAppend( out, p_block );
return VLC_SUCCESS;
}
}
return VLC_EGENERIC;
}
bool transcode_osd_add( sout_stream_t *p_stream, es_format_t *p_fmt,
sout_stream_id_sys_t *id)
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
msg_Dbg( p_stream, "creating osd transcoding from fcc=`%4.4s' "
"to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
(char*)&p_sys->i_scodec );
id->b_transcode = true;
/* Create a fake OSD menu elementary stream */
if( transcode_osd_new( p_stream, id ) )
{
msg_Err( p_stream, "cannot create osd chain" );
return false;
}
p_sys->b_osd = true;
return true;
}
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