/*****************************************************************************
* bridge.c: bridge stream output module
*****************************************************************************
- * Copyright (C) 2005 the VideoLAN team
+ * Copyright (C) 2005-2008 the VideoLAN team
* $Id$
*
* Authors: Christophe Massiot <massiot@via.ecp.fr>
+ * 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 General Public License as published by
"Name of this bridge-in instance. If you do not need more " \
"than one bridge-in at a time, you can discard this option." )
+#define PLACEHOLDER_TEXT N_( "Fallback to placeholder stream when out of data" )
+#define PLACEHOLDER_LONGTEXT N_( \
+ "If set to true, the bridge will discard all input elementary streams " \
+ "except if it doesn't receive data from another bridge-in. This can " \
+ "be used to configure a place holder stream when the real source " \
+ "breaks. Source and placeholder streams should have the same format. " )
+
+#define PLACEHOLDER_DELAY_TEXT N_( "Placeholder delay" )
+#define PLACEHOLDER_DELAY_LONGTEXT N_( \
+ "Delay (in ms) before the placeholder kicks in." )
+
+#define PLACEHOLDER_IFRAME_TEXT N_( "Wait for I frame before toggling placholder" )
+#define PLACEHOLDER_IFRAME_LONGTEXT N_( \
+ "If enabled, switching between the placeholder and the normal stream " \
+ "will only occur on I frames. This will remove artifacts on stream " \
+ "switching at the expense of a slightly longer delay, depending on " \
+ "the frequence of I frames in the streams." )
+
static int OpenOut ( vlc_object_t * );
static void CloseOut( vlc_object_t * );
static int OpenIn ( vlc_object_t * );
#define SOUT_CFG_PREFIX_OUT "sout-bridge-out-"
#define SOUT_CFG_PREFIX_IN "sout-bridge-in-"
-vlc_module_begin();
- set_shortname( N_("Bridge"));
- set_description( N_("Bridge stream output"));
- add_submodule();
- set_section( N_("Bridge out"), NULL );
- set_capability( "sout stream", 50 );
- add_shortcut( "bridge-out" );
+vlc_module_begin ()
+ set_shortname( N_("Bridge"))
+ set_description( N_("Bridge stream output"))
+ add_submodule ()
+ set_section( N_("Bridge out"), NULL )
+ set_capability( "sout stream", 50 )
+ add_shortcut( "bridge-out" )
/* Only usable with VLM. No category so not in gui preferences
- set_category( CAT_SOUT );
- set_subcategory( SUBCAT_SOUT_STREAM );*/
+ set_category( CAT_SOUT )
+ set_subcategory( SUBCAT_SOUT_STREAM )*/
add_integer( SOUT_CFG_PREFIX_OUT "id", 0, NULL, ID_TEXT, ID_LONGTEXT,
- false );
+ false )
add_string( SOUT_CFG_PREFIX_OUT "in-name", "default", NULL,
- DEST_TEXT, DEST_LONGTEXT, false );
- set_callbacks( OpenOut, CloseOut );
-
- add_submodule();
- set_section( N_("Bridge in"), NULL );
- set_capability( "sout stream", 50 );
- add_shortcut( "bridge-in" );
- /*set_category( CAT_SOUT );
- set_subcategory( SUBCAT_SOUT_STREAM );*/
+ DEST_TEXT, DEST_LONGTEXT, false )
+ set_callbacks( OpenOut, CloseOut )
+
+ add_submodule ()
+ set_section( N_("Bridge in"), NULL )
+ set_capability( "sout stream", 50 )
+ add_shortcut( "bridge-in" )
+ /*set_category( CAT_SOUT )
+ set_subcategory( SUBCAT_SOUT_STREAM )*/
add_integer( SOUT_CFG_PREFIX_IN "delay", 0, NULL, DELAY_TEXT,
- DELAY_LONGTEXT, false );
+ DELAY_LONGTEXT, false )
add_integer( SOUT_CFG_PREFIX_IN "id-offset", 8192, NULL, ID_OFFSET_TEXT,
- ID_OFFSET_LONGTEXT, false );
+ ID_OFFSET_LONGTEXT, false )
add_string( SOUT_CFG_PREFIX_IN "name", "default", NULL,
- NAME_TEXT, NAME_LONGTEXT, false );
- set_callbacks( OpenIn, CloseIn );
+ NAME_TEXT, NAME_LONGTEXT, false )
+ add_bool( SOUT_CFG_PREFIX_IN "placeholder", false, NULL,
+ PLACEHOLDER_TEXT, PLACEHOLDER_LONGTEXT, false )
+ add_integer( SOUT_CFG_PREFIX_IN "placeholder-delay", 200, NULL,
+ PLACEHOLDER_DELAY_TEXT, PLACEHOLDER_DELAY_LONGTEXT, false )
+ add_bool( SOUT_CFG_PREFIX_IN "placeholder-switch-on-iframe", true, NULL,
+ PLACEHOLDER_IFRAME_TEXT, PLACEHOLDER_IFRAME_LONGTEXT, false )
+ set_callbacks( OpenIn, CloseIn )
-vlc_module_end();
+vlc_module_end ()
/*****************************************************************************
};
static const char *const ppsz_sout_options_in[] = {
- "delay", "id-offset", "name", NULL
+ "delay", "id-offset", "name",
+ "placeholder", "placeholder-delay", "placeholder-switch-on-iframe",
+ NULL
};
static sout_stream_id_t *AddOut ( sout_stream_t *, es_format_t * );
int i_es_num;
} bridge_t;
-#define GetBridge(a,b) __GetBridge( VLC_OBJECT(a), b )
-static bridge_t *__GetBridge( vlc_object_t *p_object, const char *psz_name )
-{
- bridge_t *p_bridge;
- vlc_value_t val;
-
- if( var_Get( p_object->p_libvlc, psz_name, &val ) )
- {
- p_bridge = NULL;
- }
- else
- {
- p_bridge = val.p_address;
- }
-
- return p_bridge;
-}
-
/*
* Bridge out
p_stream->p_cfg );
p_sys = malloc( sizeof( out_sout_stream_sys_t ) );
+ if( unlikely( !p_sys ) )
+ return VLC_ENOMEM;
p_sys->b_inited = false;
var_Create( p_this->p_libvlc, "bridge-lock", VLC_VAR_MUTEX );
if ( p_sys->b_inited )
{
+ msg_Err( p_stream, "bridge-out can only handle 1 es at a time." );
return NULL;
}
p_sys->b_inited = true;
vlc_mutex_lock( p_sys->p_lock );
- p_bridge = GetBridge( p_stream, p_sys->psz_name );
+ p_bridge = var_GetAddress( p_stream->p_libvlc, p_sys->psz_name );
if ( p_bridge == NULL )
{
- vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
- vlc_value_t val;
+ p_bridge = xmalloc( sizeof( bridge_t ) );
- p_bridge = malloc( sizeof( bridge_t ) );
-
- var_Create( p_libvlc, p_sys->psz_name, VLC_VAR_ADDRESS );
- val.p_address = p_bridge;
- var_Set( p_libvlc, p_sys->psz_name, val );
+ var_Create( p_stream->p_libvlc, p_sys->psz_name, VLC_VAR_ADDRESS );
+ var_SetAddress( p_stream->p_libvlc, p_sys->psz_name, p_bridge );
p_bridge->i_es_num = 0;
p_bridge->pp_es = NULL;
if ( i == p_bridge->i_es_num )
{
- p_bridge->pp_es = realloc( p_bridge->pp_es,
- (p_bridge->i_es_num + 1)
- * sizeof(bridged_es_t *) );
+ p_bridge->pp_es = xrealloc( p_bridge->pp_es,
+ (p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
p_bridge->i_es_num++;
- p_bridge->pp_es[i] = malloc( sizeof(bridged_es_t) );
+ p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
}
p_sys->p_es = p_es = p_bridge->pp_es[i];
p_es->b_empty = false;
p_es->id = NULL;
- p_es->i_last = 0;
+ p_es->i_last = VLC_TS_INVALID;
p_es->b_changed = true;
msg_Dbg( p_stream, "bridging out input codec=%4.4s id=%d pos=%d",
typedef struct in_sout_stream_sys_t
{
- sout_stream_t *p_out;
vlc_mutex_t *p_lock;
int i_id_offset;
mtime_t i_delay;
char *psz_name;
+
+ bool b_placeholder;
+ bool b_switch_on_iframe;
+ int i_state;
+ mtime_t i_placeholder_delay;
+ sout_stream_id_t *id_video;
+ mtime_t i_last_video;
+ sout_stream_id_t *id_audio;
+ mtime_t i_last_audio;
} in_sout_stream_sys_t;
+enum { placeholder_on, placeholder_off };
+
/*****************************************************************************
* OpenIn:
*****************************************************************************/
vlc_value_t val;
p_sys = malloc( sizeof( in_sout_stream_sys_t ) );
+ if( unlikely( !p_sys ) )
+ return VLC_ENOMEM;
- p_sys->p_out = sout_StreamNew( p_stream->p_sout, p_stream->psz_next );
- if( !p_sys->p_out )
+ if( !p_stream->p_next )
{
msg_Err( p_stream, "cannot create chain" );
free( p_sys );
}
free( val.psz_string );
+ var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder", &val );
+ p_sys->b_placeholder = val.b_bool;
+
+ var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder-switch-on-iframe", &val);
+ p_sys->b_switch_on_iframe = val.b_bool;
+
+ p_sys->i_state = placeholder_on;
+
+ var_Get( p_stream, SOUT_CFG_PREFIX_IN "placeholder-delay", &val );
+ p_sys->i_placeholder_delay = (mtime_t)val.i_int * 1000;
+
+ p_sys->i_last_video = VLC_TS_INVALID;
+ p_sys->i_last_audio = VLC_TS_INVALID;
+ p_sys->id_video = NULL;
+ p_sys->id_audio = NULL;
+
p_stream->pf_add = AddIn;
p_stream->pf_del = DelIn;
p_stream->pf_send = SendIn;
sout_stream_t *p_stream = (sout_stream_t*)p_this;
in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
- sout_StreamDelete( p_sys->p_out );
p_stream->p_sout->i_out_pace_nocontrol--;
free( p_sys->psz_name );
free( p_sys );
}
+struct sout_stream_id_t
+{
+ sout_stream_id_t *id;
+ int i_cat; /* es category. Used for placeholder option */
+};
+
static sout_stream_id_t * AddIn( sout_stream_t *p_stream, es_format_t *p_fmt )
{
in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
- return p_sys->p_out->pf_add( p_sys->p_out, p_fmt );
+ sout_stream_id_t *id = malloc( sizeof( sout_stream_id_t ) );
+ if( !id ) return NULL;
+
+ id->id = p_stream->p_next->pf_add( p_stream->p_next, p_fmt );
+ if( !id->id )
+ {
+ free( id );
+ return NULL;
+ }
+
+ if( p_sys->b_placeholder )
+ {
+ id->i_cat = p_fmt->i_cat;
+ switch( p_fmt->i_cat )
+ {
+ case VIDEO_ES:
+ if( p_sys->id_video != NULL )
+ msg_Err( p_stream, "We already had a video es!" );
+ p_sys->id_video = id->id;
+ break;
+ case AUDIO_ES:
+ if( p_sys->id_audio != NULL )
+ msg_Err( p_stream, "We already had an audio es!" );
+ p_sys->id_audio = id->id;
+ break;
+ }
+ }
+
+ return id;
}
static int DelIn( sout_stream_t *p_stream, sout_stream_id_t *id )
{
in_sout_stream_sys_t *p_sys = (in_sout_stream_sys_t *)p_stream->p_sys;
- return p_sys->p_out->pf_del( p_sys->p_out, id );
+ if( id == p_sys->id_video ) p_sys->id_video = NULL;
+ if( id == p_sys->id_audio ) p_sys->id_audio = NULL;
+
+ int ret = p_stream->p_next->pf_del( p_stream->p_next, id->id );
+
+ free( id );
+ return ret;
}
static int SendIn( sout_stream_t *p_stream, sout_stream_id_t *id,
bridge_t *p_bridge;
bool b_no_es = true;
int i;
+ int i_date = mdate();
/* First forward the packet for our own ES */
- p_sys->p_out->pf_send( p_sys->p_out, id, p_buffer );
+ if( !p_sys->b_placeholder )
+ p_stream->p_next->pf_send( p_stream->p_next, id->id, p_buffer );
/* Then check all bridged streams */
vlc_mutex_lock( p_sys->p_lock );
- p_bridge = GetBridge( p_stream, p_sys->psz_name );
- if ( p_bridge == NULL )
- {
- vlc_mutex_unlock( p_sys->p_lock );
- return VLC_SUCCESS;
- }
+ p_bridge = var_GetAddress( p_stream->p_libvlc, p_sys->psz_name );
+ if( p_bridge )
+ {
for ( i = 0; i < p_bridge->i_es_num; i++ )
{
if ( !p_bridge->pp_es[i]->b_empty )
while ( p_bridge->pp_es[i]->p_block != NULL
&& (p_bridge->pp_es[i]->p_block->i_dts + p_sys->i_delay
- < mdate()
+ < i_date
|| p_bridge->pp_es[i]->p_block->i_dts + p_sys->i_delay
< p_bridge->pp_es[i]->i_last) )
{
block_t *p_block = p_bridge->pp_es[i]->p_block;
msg_Dbg( p_stream, "dropping a packet (%"PRId64 ")",
- mdate() - p_block->i_dts - p_sys->i_delay );
+ i_date - p_block->i_dts - p_sys->i_delay );
p_bridge->pp_es[i]->p_block
= p_bridge->pp_es[i]->p_block->p_next;
block_Release( p_block );
{
if ( p_bridge->pp_es[i]->b_empty && p_bridge->pp_es[i]->id != NULL )
{
- p_sys->p_out->pf_del( p_sys->p_out, p_bridge->pp_es[i]->id );
+ p_stream->p_next->pf_del( p_stream->p_next, p_bridge->pp_es[i]->id );
}
else
{
}
p_bridge->pp_es[i]->fmt.i_id += p_sys->i_id_offset;
- p_bridge->pp_es[i]->id = p_sys->p_out->pf_add(
- p_sys->p_out, &p_bridge->pp_es[i]->fmt );
- if ( p_bridge->pp_es[i]->id == NULL )
+ if( !p_sys->b_placeholder )
{
- msg_Warn( p_stream, "couldn't create chain for id %d",
- p_bridge->pp_es[i]->fmt.i_id );
+ p_bridge->pp_es[i]->id = p_stream->p_next->pf_add(
+ p_stream->p_next, &p_bridge->pp_es[i]->fmt );
+ if ( p_bridge->pp_es[i]->id == NULL )
+ {
+ msg_Warn( p_stream, "couldn't create chain for id %d",
+ p_bridge->pp_es[i]->fmt.i_id );
+ }
}
msg_Dbg( p_stream, "bridging in input codec=%4.4s id=%d pos=%d",
(char*)&p_bridge->pp_es[i]->fmt.i_codec,
if ( p_bridge->pp_es[i]->p_block == NULL )
{
if ( p_bridge->pp_es[i]->id != NULL
- && p_bridge->pp_es[i]->i_last < mdate() )
+ && p_bridge->pp_es[i]->i_last < i_date )
{
- p_sys->p_out->pf_del( p_sys->p_out, p_bridge->pp_es[i]->id );
+ if( !p_sys->b_placeholder )
+ p_stream->p_next->pf_del( p_stream->p_next,
+ p_bridge->pp_es[i]->id );
p_bridge->pp_es[i]->fmt.i_id -= p_sys->i_id_offset;
p_bridge->pp_es[i]->b_changed = true;
p_bridge->pp_es[i]->id = NULL;
continue;
}
- if ( p_bridge->pp_es[i]->id != NULL )
+ if ( p_bridge->pp_es[i]->id != NULL || p_sys->b_placeholder)
{
block_t *p_block = p_bridge->pp_es[i]->p_block;
while ( p_block != NULL )
p_block->i_dts += p_sys->i_delay;
p_block = p_block->p_next;
}
- p_sys->p_out->pf_send( p_sys->p_out, p_bridge->pp_es[i]->id,
+ sout_stream_id_t *newid = NULL;
+ if( p_sys->b_placeholder )
+ {
+ switch( p_bridge->pp_es[i]->fmt.i_cat )
+ {
+ case VIDEO_ES:
+ p_sys->i_last_video = i_date;
+ newid = p_sys->id_video;
+ if( !newid )
+ break;
+ if( !p_sys->b_switch_on_iframe ||
+ p_sys->i_state == placeholder_off ||
+ ( p_bridge->pp_es[i]->fmt.i_cat == VIDEO_ES &&
+ p_bridge->pp_es[i]->p_block->i_flags & BLOCK_FLAG_TYPE_I ) )
+ {
+ p_stream->p_next->pf_send( p_stream->p_next,
+ newid,
+ p_bridge->pp_es[i]->p_block );
+ p_sys->i_state = placeholder_off;
+ }
+ break;
+ case AUDIO_ES:
+ newid = p_sys->id_audio;
+ if( !newid )
+ break;
+ p_sys->i_last_audio = i_date;
+ default:
+ p_stream->p_next->pf_send( p_stream->p_next,
+ newid?newid:p_bridge->pp_es[i]->id,
p_bridge->pp_es[i]->p_block );
+ break;
+ }
+ }
+ else /* !b_placeholder */
+ p_stream->p_next->pf_send( p_stream->p_next,
+ p_bridge->pp_es[i]->id,
+ p_bridge->pp_es[i]->p_block );
}
else
{
if( b_no_es )
{
- vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->p_libvlc );
for ( i = 0; i < p_bridge->i_es_num; i++ )
free( p_bridge->pp_es[i] );
free( p_bridge->pp_es );
free( p_bridge );
- var_Destroy( p_libvlc, p_sys->psz_name );
+ var_Destroy( p_stream->p_libvlc, p_sys->psz_name );
+ }
+ }
+
+ if( p_sys->b_placeholder )
+ {
+ switch( id->i_cat )
+ {
+ case VIDEO_ES:
+ if( ( p_sys->i_last_video + p_sys->i_placeholder_delay < i_date
+ && ( !p_sys->b_switch_on_iframe
+ || p_buffer->i_flags & BLOCK_FLAG_TYPE_I ) )
+ || p_sys->i_state == placeholder_on )
+ {
+ p_stream->p_next->pf_send( p_stream->p_next, id->id, p_buffer );
+ p_sys->i_state = placeholder_on;
+ }
+ else
+ block_Release( p_buffer );
+ break;
+
+ case AUDIO_ES:
+ if( p_sys->i_last_audio + p_sys->i_placeholder_delay < i_date )
+ p_stream->p_next->pf_send( p_stream->p_next, id->id, p_buffer );
+ else
+ block_Release( p_buffer );
+ break;
+
+ default:
+ block_Release( p_buffer ); /* FIXME: placeholder subs anyone? */
+ break;
+ }
}
vlc_mutex_unlock( p_sys->p_lock );
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