1 /*****************************************************************************
2 * osd.c: transcoding stream output module (osd)
3 *****************************************************************************
4 * Copyright (C) 2003-2009 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@videolan.org>
9 * Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
10 * Antoine Cellerier <dionoea at videolan dot org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
31 #include "transcode.h"
34 #include <vlc_modules.h>
39 int transcode_osd_new( sout_stream_t *p_stream, sout_stream_id_t *id )
41 sout_stream_sys_t *p_sys = p_stream->p_sys;
43 id->p_decoder->fmt_in.i_cat = SPU_ES;
44 id->p_encoder->fmt_out.psz_language = strdup( "osd" );
46 if( p_sys->i_osdcodec != 0 || p_sys->psz_osdenc )
48 msg_Dbg( p_stream, "creating osdmenu transcoding from fcc=`%4.4s' "
49 "to fcc=`%4.4s'", (char*)&id->p_encoder->fmt_out.i_codec,
50 (char*)&p_sys->i_osdcodec );
52 /* Complete destination format */
53 id->p_encoder->fmt_out.i_codec = p_sys->i_osdcodec;
56 es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
58 id->p_encoder->fmt_in.psz_language = strdup( "osd" );
60 id->p_encoder->p_cfg = p_sys->p_osd_cfg;
62 id->p_encoder->p_module =
63 module_need( id->p_encoder, "encoder", p_sys->psz_osdenc, true );
65 if( !id->p_encoder->p_module )
67 msg_Err( p_stream, "cannot find spu encoder (%s)", p_sys->psz_osdenc );
71 /* open output stream */
72 id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
73 id->b_transcode = true;
75 if( !id->id ) goto error;
79 msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
80 (char*)&id->p_decoder->fmt_out.i_codec );
81 id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_decoder->fmt_out );
82 id->b_transcode = false;
84 if( !id->id ) goto error;
88 p_sys->p_spu = spu_Create( p_stream );
93 msg_Err( p_stream, "starting osd encoding thread failed" );
94 if( id->p_encoder->p_module )
95 module_unneed( id->p_encoder, id->p_encoder->p_module );
100 void transcode_osd_close( sout_stream_t *p_stream, sout_stream_id_t *id)
102 sout_stream_sys_t *p_sys = p_stream->p_sys;
107 if( id->p_encoder->p_module )
108 module_unneed( id->p_encoder, id->p_encoder->p_module );
110 p_sys->b_osd = false;
113 int transcode_osd_process( sout_stream_t *p_stream, sout_stream_id_t *id,
114 block_t *in, block_t **out )
116 sout_stream_sys_t *p_sys = p_stream->p_sys;
117 subpicture_t *p_subpic = NULL;
119 /* Check if we have a subpicture to send */
120 if( p_sys->p_spu && in->i_dts > VLC_TS_INVALID )
123 video_format_Init( &fmt, 0 );
124 video_format_Setup( &fmt, 0, 720, 576, 1, 1 );
125 p_subpic = spu_Render( p_sys->p_spu, NULL, &fmt, &fmt, in->i_dts, in->i_dts, false );
129 msg_Warn( p_stream, "spu channel not initialized, doing it now" );
131 p_sys->p_spu = spu_Create( p_stream );
136 block_t *p_block = NULL;
138 if( p_sys->b_master_sync && p_sys->i_master_drift )
140 p_subpic->i_start -= p_sys->i_master_drift;
141 if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
144 p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
145 subpicture_Delete( p_subpic );
148 p_block->i_dts = p_block->i_pts = in->i_dts;
149 block_ChainAppend( out, p_block );
156 bool transcode_osd_add( sout_stream_t *p_stream, es_format_t *p_fmt,
157 sout_stream_id_t *id)
159 sout_stream_sys_t *p_sys = p_stream->p_sys;
161 msg_Dbg( p_stream, "creating osd transcoding from fcc=`%4.4s' "
162 "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
163 (char*)&p_sys->i_scodec );
165 id->b_transcode = true;
167 /* Create a fake OSD menu elementary stream */
168 if( transcode_osd_new( p_stream, id ) )
170 msg_Err( p_stream, "cannot create osd chain" );