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/*****************************************************************************
* display.c: display stream output module
*****************************************************************************
* Copyright (C) 2001-2011 VLC authors and VideoLAN
*
* 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
*****************************************************************************/
#define AUDIO_TEXT N_("Enable audio")
#define AUDIO_LONGTEXT N_( "Enable/disable audio rendering." )
#define VIDEO_TEXT N_("Enable video")
#define VIDEO_LONGTEXT N_( "Enable/disable video rendering." )
#define DELAY_TEXT N_("Delay (ms)")
#define DELAY_LONGTEXT N_( "Introduces a delay in the display of the stream." )
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define SOUT_CFG_PREFIX "sout-display-"
vlc_module_begin ()
set_shortname( N_("Display"))
set_description( N_("Display stream output") )
set_capability( "sout stream", 50 )
add_shortcut( "display" )
set_category( CAT_SOUT )
set_subcategory( SUBCAT_SOUT_STREAM )
add_bool( SOUT_CFG_PREFIX "audio", true, AUDIO_TEXT,
AUDIO_LONGTEXT, true )
add_bool( SOUT_CFG_PREFIX "video", true, VIDEO_TEXT,
VIDEO_LONGTEXT, true )
add_integer( SOUT_CFG_PREFIX "delay", 100, DELAY_TEXT,
DELAY_LONGTEXT, true )
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static const char *const ppsz_sout_options[] = {
"audio", "video", "delay", NULL
};
static sout_stream_id_sys_t *Add( sout_stream_t *, const es_format_t * );
static void 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_sys_t
{
bool b_audio;
bool b_video;
vlc_tick_t i_delay;
input_resource_t *p_resource;
};
/*****************************************************************************
* 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_sys = malloc( sizeof( sout_stream_sys_t ) );
if( p_sys == NULL )
return VLC_ENOMEM;
p_sys->p_resource = input_resource_New( p_this );
if( unlikely(p_sys->p_resource == NULL) )
{
free( p_sys );
return VLC_ENOMEM;
}
config_ChainParse( p_stream, SOUT_CFG_PREFIX, ppsz_sout_options,
p_stream->p_cfg );
p_sys->b_audio = var_GetBool( p_stream, SOUT_CFG_PREFIX"audio" );
p_sys->b_video = var_GetBool( p_stream, SOUT_CFG_PREFIX "video" );
p_sys->i_delay = var_GetInteger( p_stream, SOUT_CFG_PREFIX "delay" );
p_sys->i_delay = p_sys->i_delay * CLOCK_FREQ / 1000;
p_stream->pf_add = Add;
p_stream->pf_del = Del;
p_stream->pf_send = Send;
p_stream->p_sys = p_sys;
p_stream->pace_nocontrol = true;
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;
input_resource_Terminate( p_sys->p_resource );
input_resource_Release( p_sys->p_resource );
free( p_sys );
}
static sout_stream_id_sys_t * Add( sout_stream_t *p_stream, const es_format_t *p_fmt )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
if( ( p_fmt->i_cat == AUDIO_ES && !p_sys->b_audio )||
( p_fmt->i_cat == VIDEO_ES && !p_sys->b_video ) )
{
return NULL;
}
decoder_t *p_dec = input_DecoderCreate( VLC_OBJECT(p_stream), p_fmt,
p_sys->p_resource );
if( p_dec == NULL )
{
msg_Err( p_stream, "cannot create decoder for fcc=`%4.4s'",
(char*)&p_fmt->i_codec );
return NULL;
}
return (sout_stream_id_sys_t *)p_dec;
}
static void Del( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
{
(void) p_stream;
input_DecoderDelete( (decoder_t *)id );
}
static int Send( sout_stream_t *p_stream, sout_stream_id_sys_t *id,
block_t *p_buffer )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
while( p_buffer )
{
block_t *p_next = p_buffer->p_next;
p_buffer->p_next = NULL;
if( id != NULL && p_buffer->i_buffer > 0 )
{
if( p_buffer->i_dts <= VLC_TICK_INVALID )
p_buffer->i_dts = 0;
else
p_buffer->i_dts += p_sys->i_delay;
if( p_buffer->i_pts <= VLC_TICK_INVALID )
p_buffer->i_pts = 0;
else
p_buffer->i_pts += p_sys->i_delay;
input_DecoderDecode( (decoder_t *)id, p_buffer, false );
}
p_buffer = p_next;
}
return VLC_SUCCESS;
}
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