--- /dev/null
+/*****************************************************************************
+ * delay.c: delay a stream
+ *****************************************************************************
+ * Copyright (C) 2011 VideoLAN
+ * $Id$
+ *
+ * Authors: Christophe Massiot <massiot@via.ecp.fr>
+ *
+ * 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
+ *****************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_sout.h>
+#include <vlc_block.h>
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+#define ID_TEXT N_("ID")
+#define ID_LONGTEXT N_( \
+ "Specify an identifier integer for this elementary stream" )
+
+#define DELAY_TEXT N_("Delay")
+#define DELAY_LONGTEXT N_( \
+ "Specify a delay for this elementary stream (positive or negative)" )
+
+static int Open ( vlc_object_t * );
+static void Close ( vlc_object_t * );
+
+#define SOUT_CFG_PREFIX "sout-delay-"
+
+vlc_module_begin()
+ set_shortname( _("delay"))
+ set_description( _("Delay a stream"))
+ set_capability( "sout stream", 50 )
+ add_shortcut( "delay" )
+ set_callbacks( Open, Close )
+ add_integer( SOUT_CFG_PREFIX "id", 0, ID_TEXT, ID_LONGTEXT,
+ false )
+ add_integer( SOUT_CFG_PREFIX "delay", 0, DELAY_TEXT, DELAY_LONGTEXT,
+ false )
+vlc_module_end()
+
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static const char *ppsz_sout_options[] = {
+ "id", "delay", NULL
+};
+
+static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
+static int Del ( sout_stream_t *, sout_stream_id_t * );
+static int Send ( sout_stream_t *, sout_stream_id_t *, block_t * );
+
+struct sout_stream_sys_t
+{
+ sout_stream_t *p_out;
+ sout_stream_id_t *id;
+ int i_id;
+ mtime_t i_delay;
+};
+
+/*****************************************************************************
+ * Open:
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+ sout_stream_t *p_stream = (sout_stream_t*)p_this;
+ sout_stream_sys_t *p_sys;
+ vlc_value_t val;
+
+ p_sys = calloc( 1, sizeof( sout_stream_sys_t ) );
+ if( !p_sys )
+ return VLC_ENOMEM;
+
+ if( !p_stream->p_next )
+ {
+ msg_Err( p_stream, "cannot create chain" );
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
+
+ config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
+ p_stream->p_cfg );
+
+ var_Get( p_stream, SOUT_CFG_PREFIX "id", &val );
+ p_sys->i_id = val.i_int;
+ var_Get( p_stream, SOUT_CFG_PREFIX "delay", &val );
+ p_sys->i_delay = val.i_int * 1000;
+
+ p_stream->pf_add = Add;
+ p_stream->pf_del = Del;
+ p_stream->pf_send = Send;
+
+ p_stream->p_sys = p_sys;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close:
+ *****************************************************************************/
+static void Close( vlc_object_t * p_this )
+{
+ sout_stream_t *p_stream = (sout_stream_t*)p_this;
+ sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
+
+ free( p_sys );
+}
+
+static sout_stream_id_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
+{
+ sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
+
+ if ( p_fmt->i_id == p_sys->i_id )
+ {
+ msg_Dbg( p_stream, "delaying ID %d by %"PRId64,
+ p_sys->i_id, p_sys->i_delay );
+ p_sys->id = p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
+ return p_sys->id;
+ }
+
+
+ return p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
+}
+
+static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
+{
+ sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
+
+ if ( id == p_sys->id )
+ p_sys->id = NULL;
+
+ return p_sys->p_out->pf_del( p_sys->p_out, id );
+}
+
+static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
+ block_t *p_buffer )
+{
+ sout_stream_sys_t *p_sys = (sout_stream_sys_t *)p_stream->p_sys;
+
+ if ( id == p_sys->id )
+ {
+ block_t *p_block = p_buffer;
+ while ( p_block != NULL )
+ {
+ if ( p_block->i_pts && p_block->i_pts != VLC_TS_INVALID )
+ p_block->i_pts += p_sys->i_delay;
+ if ( p_block->i_dts && p_block->i_dts != VLC_TS_INVALID )
+ p_block->i_dts += p_sys->i_delay;
+ p_block = p_block->p_next;
+ }
+ }
+
+ return p_sys->p_out->pf_send( p_sys->p_out, id, p_buffer );
+}