[vlc-commits] New stream out module delay to delay PTS/DTS
Christophe Massiot
git at videolan.org
Wed Jan 19 23:17:47 CET 2011
vlc | branch: master | Christophe Massiot <massiot at via.ecp.fr> | Thu Jan 13 21:12:42 2011 +0100| [b8cbf90df860665718e0278b04d8b8a94d6eb3c1] | committer: Jean-Baptiste Kempf
New stream out module delay to delay PTS/DTS
Signed-off-by: Jean-Baptiste Kempf <jb at videolan.org>
> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=b8cbf90df860665718e0278b04d8b8a94d6eb3c1
---
NEWS | 1 +
modules/stream_out/Modules.am | 2 +
modules/stream_out/delay.c | 177 +++++++++++++++++++++++++++++++++++++++++
po/POTFILES.in | 1 +
4 files changed, 181 insertions(+), 0 deletions(-)
diff --git a/NEWS b/NEWS
index cd315fe..fbb80a5 100644
--- a/NEWS
+++ b/NEWS
@@ -80,6 +80,7 @@ Stream output:
dst=public_html/iphonestreamfile-###.ts}"
* RTP: support for Vorbis and Theora
* Major rework of VoD support
+ * New delay module
Services Discovery:
* Search API to be able to query distant search APIs from the interfaces
diff --git a/modules/stream_out/Modules.am b/modules/stream_out/Modules.am
index 8c757ba..19aea56 100644
--- a/modules/stream_out/Modules.am
+++ b/modules/stream_out/Modules.am
@@ -1,6 +1,7 @@
SUBDIRS = transcode
SOURCES_stream_out_dummy = dummy.c
+SOURCES_stream_out_delay = delay.c
SOURCES_stream_out_description = description.c
SOURCES_stream_out_standard = standard.c
SOURCES_stream_out_duplicate = duplicate.c
@@ -17,6 +18,7 @@ SOURCES_stream_out_smem = smem.c
libvlc_LTLIBRARIES += \
libstream_out_dummy_plugin.la \
+ libstream_out_delay_plugin.la \
libstream_out_description_plugin.la \
libstream_out_standard_plugin.la \
libstream_out_duplicate_plugin.la \
diff --git a/modules/stream_out/delay.c b/modules/stream_out/delay.c
new file mode 100644
index 0000000..44c1c08
--- /dev/null
+++ b/modules/stream_out/delay.c
@@ -0,0 +1,177 @@
+/*****************************************************************************
+ * delay.c: delay a stream
+ *****************************************************************************
+ * Copyright (C) 2011 VideoLAN
+ * $Id$
+ *
+ * Authors: Christophe Massiot <massiot at 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 );
+}
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 252e87a..78d858a 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1015,6 +1015,7 @@ modules/stream_filter/decomp.c
modules/stream_filter/record.c
modules/stream_out/autodel.c
modules/stream_out/bridge.c
+modules/stream_out/delay.c
modules/stream_out/description.c
modules/stream_out/display.c
modules/stream_out/dummy.c
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