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/*****************************************************************************
* gather.c: gathering stream output module
*****************************************************************************
* Copyright (C) 2003-2004 VLC authors and VideoLAN
* $Id: ebad0e1c1fe609b7516bd8367e060e0d71532bbb $
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_input.h>
#include <vlc_sout.h>
#include <vlc_block.h>
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin ()
set_description( N_("Gathering stream output") )
set_capability( "sout stream", 50 )
add_shortcut( "gather" )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static sout_stream_id_sys_t *Add ( sout_stream_t *, es_format_t * );
static int Del ( sout_stream_t *, sout_stream_id_sys_t * );
static int Send( sout_stream_t *, sout_stream_id_sys_t *, block_t* );
struct sout_stream_id_sys_t
{
bool b_used;
bool b_streamswap;
es_format_t fmt;
void *id;
};
struct sout_stream_sys_t
{
int i_id;
sout_stream_id_sys_t **id;
};
/*****************************************************************************
* 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;
p_stream->p_sys = p_sys = malloc( sizeof( sout_stream_sys_t ) );
if( p_sys == NULL )
return VLC_EGENERIC;
if( !p_stream->p_next )
{
free( p_sys );
return VLC_EGENERIC;
}
p_stream->pf_add = Add;
p_stream->pf_del = Del;
p_stream->pf_send = Send;
TAB_INIT( p_sys->i_id, p_sys->id );
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 = p_stream->p_sys;
int i;
for( i = 0; i < p_sys->i_id; i++ )
{
sout_stream_id_sys_t *id = p_sys->id[i];
sout_StreamIdDel( p_stream->p_next, id->id );
es_format_Clean( &id->fmt );
free( id );
}
TAB_CLEAN( p_sys->i_id, p_sys->id );
free( p_sys );
}
/*****************************************************************************
* Add:
*****************************************************************************/
static sout_stream_id_sys_t * Add( sout_stream_t *p_stream, es_format_t *p_fmt )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
sout_stream_id_sys_t *id;
int i;
/* search a compatible output */
for( i = 0; i < p_sys->i_id; i++ )
{
id = p_sys->id[i];
if( id->b_used )
continue;
if( id->fmt.i_cat != p_fmt->i_cat || id->fmt.i_codec != p_fmt->i_codec )
continue;
if( id->fmt.i_cat == AUDIO_ES )
{
audio_format_t *p_a = &id->fmt.audio;
if( p_a->i_rate != p_fmt->audio.i_rate ||
p_a->i_channels != p_fmt->audio.i_channels ||
p_a->i_blockalign != p_fmt->audio.i_blockalign )
continue;
}
else if( id->fmt.i_cat == VIDEO_ES )
{
video_format_t *p_v = &id->fmt.video;
if( p_v->i_width != p_fmt->video.i_width ||
p_v->i_height != p_fmt->video.i_height )
continue;
}
/* */
msg_Dbg( p_stream, "reusing already opened output" );
id->b_used = true;
id->b_streamswap = true;
return id;
}
/* destroy all outputs from the same category */
for( i = 0; i < p_sys->i_id; i++ )
{
id = p_sys->id[i];
if( !id->b_used && id->fmt.i_cat == p_fmt->i_cat )
{
TAB_REMOVE( p_sys->i_id, p_sys->id, id );
sout_StreamIdDel( p_stream->p_next, id->id );
es_format_Clean( &id->fmt );
free( id );
i = 0;
continue;
}
}
msg_Dbg( p_stream, "creating new output" );
id = malloc( sizeof( sout_stream_id_sys_t ) );
if( id == NULL )
return NULL;
es_format_Copy( &id->fmt, p_fmt );
id->b_used = true;
id->id = sout_StreamIdAdd( p_stream->p_next, &id->fmt );
if( id->id == NULL )
{
free( id );
return NULL;
}
TAB_APPEND( p_sys->i_id, p_sys->id, id );
return id;
}
/*****************************************************************************
* Del:
*****************************************************************************/
static int Del( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
{
VLC_UNUSED(p_stream);
id->b_used = false;
return VLC_SUCCESS;
}
/*****************************************************************************
* Send:
*****************************************************************************/
static int Send( sout_stream_t *p_stream,
sout_stream_id_sys_t *id, block_t *p_buffer )
{
if ( id->b_streamswap )
{
id->b_streamswap = false;
p_buffer->i_flags |= BLOCK_FLAG_DISCONTINUITY;
}
return sout_StreamIdSend( p_stream->p_next, id->id, p_buffer );
}
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