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"
38 int transcode_osd_new( sout_stream_t *p_stream, sout_stream_id_t *id )
40 sout_stream_sys_t *p_sys = p_stream->p_sys;
42 id->p_decoder->fmt_in.i_cat = SPU_ES;
43 id->p_encoder->fmt_out.psz_language = strdup( "osd" );
45 if( p_sys->i_osdcodec != 0 || p_sys->psz_osdenc )
47 msg_Dbg( p_stream, "creating osdmenu transcoding from fcc=`%4.4s' "
48 "to fcc=`%4.4s'", (char*)&id->p_encoder->fmt_out.i_codec,
49 (char*)&p_sys->i_osdcodec );
51 /* Complete destination format */
52 id->p_encoder->fmt_out.i_codec = p_sys->i_osdcodec;
55 es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
57 id->p_encoder->fmt_in.psz_language = strdup( "osd" );
59 id->p_encoder->p_cfg = p_sys->p_osd_cfg;
61 id->p_encoder->p_module =
62 module_need( id->p_encoder, "encoder", p_sys->psz_osdenc, true );
64 if( !id->p_encoder->p_module )
66 msg_Err( p_stream, "cannot find spu encoder (%s)", p_sys->psz_osdenc );
70 /* open output stream */
71 id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_encoder->fmt_out );
72 id->b_transcode = true;
74 if( !id->id ) goto error;
78 msg_Dbg( p_stream, "not transcoding a stream (fcc=`%4.4s')",
79 (char*)&id->p_decoder->fmt_out.i_codec );
80 id->id = sout_StreamIdAdd( p_stream->p_next, &id->p_decoder->fmt_out );
81 id->b_transcode = false;
83 if( !id->id ) goto error;
88 p_sys->p_spu = spu_Create( p_stream );
89 spu_Init( p_sys->p_spu );
95 msg_Err( p_stream, "starting osd encoding thread failed" );
96 if( id->p_encoder->p_module )
97 module_unneed( id->p_encoder, id->p_encoder->p_module );
102 void transcode_osd_close( sout_stream_t *p_stream, sout_stream_id_t *id)
104 sout_stream_sys_t *p_sys = p_stream->p_sys;
109 if( id->p_encoder->p_module )
110 module_unneed( id->p_encoder, id->p_encoder->p_module );
112 p_sys->b_osd = false;
115 int transcode_osd_process( sout_stream_t *p_stream, sout_stream_id_t *id,
116 block_t *in, block_t **out )
118 sout_stream_sys_t *p_sys = p_stream->p_sys;
119 subpicture_t *p_subpic = NULL;
121 /* Check if we have a subpicture to send */
122 if( p_sys->p_spu && in->i_dts > VLC_TS_INVALID )
124 p_subpic = spu_SortSubpictures( p_sys->p_spu, in->i_dts, false );
128 msg_Warn( p_stream, "spu channel not initialized, doing it now" );
131 p_sys->p_spu = spu_Create( p_stream );
132 spu_Init( p_sys->p_spu );
138 block_t *p_block = NULL;
140 if( p_sys->b_master_sync && p_sys->i_master_drift )
142 p_subpic->i_start -= p_sys->i_master_drift;
143 if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
146 p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
147 subpicture_Delete( p_subpic );
150 p_block->i_dts = p_block->i_pts = in->i_dts;
151 block_ChainAppend( out, p_block );
158 bool transcode_osd_add( sout_stream_t *p_stream, es_format_t *p_fmt,
159 sout_stream_id_t *id)
161 sout_stream_sys_t *p_sys = p_stream->p_sys;
163 msg_Dbg( p_stream, "creating osd transcoding from fcc=`%4.4s' "
164 "to fcc=`%4.4s'", (char*)&p_fmt->i_codec,
165 (char*)&p_sys->i_scodec );
167 id->b_transcode = true;
169 /* Create a fake OSD menu elementary stream */
170 if( transcode_osd_new( p_stream, id ) )
172 msg_Err( p_stream, "cannot create osd chain" );