/*****************************************************************************
* interface.c: interface access for other threads
* This library provides basic functions for threads to interact with user
* interface, such as command line.
*****************************************************************************
* Copyright (C) 1998-2001 VideoLAN
* $Id: interface.c,v 1.90 2002/02/24 20:51:10 gbazin Exp $
*
* Authors: Vincent Seguin <seguin@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
*****************************************************************************/
#include <errno.h> /* ENOMEM */
#include <stdlib.h> /* free(), strtol() */
#include <stdio.h> /* FILE */
#include <string.h> /* strerror() */
#include <sys/types.h> /* off_t */
#include <videolan/vlc.h>
#include "stream_control.h"
#include "input_ext-intf.h"
#include "audio_output.h"
#include "interface.h"
#include "intf_playlist.h"
#include "video.h"
#include "video_output.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void intf_Manage( intf_thread_t *p_intf );
/*****************************************************************************
* intf_Create: prepare interface before main loop
*****************************************************************************
* This function opens output devices and creates specific interfaces. It sends
* its own error messages.
*****************************************************************************/
intf_thread_t* intf_Create( void )
{
intf_thread_t * p_intf;
char *psz_name;
/* Allocate structure */
p_intf = malloc( sizeof( intf_thread_t ) );
if( !p_intf )
{
intf_ErrMsg( "intf error: cannot create interface thread (%s)",
strerror( ENOMEM ) );
return( NULL );
}
/* Choose the best module */
psz_name = config_GetPszVariable( INTF_METHOD_VAR );
p_intf->p_module = module_Need( MODULE_CAPABILITY_INTF, psz_name,
(void *)p_intf );
if( psz_name ) free( psz_name );
if( p_intf->p_module == NULL )
{
intf_ErrMsg( "intf error: no suitable intf module" );
free( p_intf );
return( NULL );
}
#define f p_intf->p_module->p_functions->intf.functions.intf
p_intf->pf_open = f.pf_open;
p_intf->pf_close = f.pf_close;
p_intf->pf_run = f.pf_run;
#undef f
/* Initialize callbacks */
p_intf->pf_manage = intf_Manage;
/* Initialize structure */
p_intf->b_die = 0;
p_intf->b_menu = 0;
p_intf->b_menu_change = 0;
/* Initialize mutexes */
vlc_mutex_init( &p_intf->change_lock );
intf_WarnMsg( 1, "intf: interface initialized");
return( p_intf );
}
/*****************************************************************************
* intf_Manage: manage interface
*****************************************************************************
* This function has to be called regularly by the interface plugin. It
* checks for playlist end, module expiration, message flushing, and a few
* other useful things.
*****************************************************************************/
static void intf_Manage( intf_thread_t *p_intf )
{
/* Manage module bank */
module_ManageBank( );
vlc_mutex_lock( &p_input_bank->lock );
if( p_input_bank->i_count )
{
int i_input;
input_thread_t *p_input;
for( i_input = 0; i_input < p_input_bank->i_count; i_input++ )
{
p_input = p_input_bank->pp_input[i_input];
if( p_input->i_status == THREAD_OVER )
{
/* XXX: completely stupid ! */
input_DestroyThread( p_input );
p_input_bank->pp_input[i_input] = NULL;
p_input_bank->i_count--;
}
else if( ( p_input->i_status == THREAD_READY
|| p_input->i_status == THREAD_ERROR )
&& ( p_input->b_error || p_input->b_eof ) )
{
input_StopThread( p_input, NULL );
}
}
}
/* If no stream is being played, try to find one */
else
{
// vlc_mutex_lock( &p_main->p_playlist->change_lock );
if( !p_main->p_playlist->b_stopped )
{
/* Select the next playlist item */
intf_PlaylistNext( p_main->p_playlist );
/* don't loop by default: stop at playlist end */
if( p_main->p_playlist->i_index == -1 )
{
p_main->p_playlist->b_stopped = 1;
}
else
{
input_thread_t *p_input;
p_main->p_playlist->b_stopped = 0;
p_main->p_playlist->i_mode = PLAYLIST_FORWARD +
config_GetIntVariable( PLAYLIST_LOOP_VAR );
intf_WarnMsg( 3, "intf: creating new input thread" );
p_input = input_CreateThread( &p_main->p_playlist->current,
NULL );
if( p_input != NULL )
{
p_input_bank->pp_input[ p_input_bank->i_count ] = p_input;
p_input_bank->i_count++;
}
}
}
else
{
/* playing has been stopped: we no longer need outputs */
if( p_aout_bank->i_count )
{
/* FIXME kludge that does not work with several outputs */
aout_DestroyThread( p_aout_bank->pp_aout[0], NULL );
p_aout_bank->i_count--;
}
if( p_vout_bank->i_count )
{
vout_DestroyThread( p_vout_bank->pp_vout[0], NULL );
p_vout_bank->i_count--;
}
}
// vlc_mutex_unlock( &p_main->p_playlist->change_lock );
}
vlc_mutex_unlock( &p_input_bank->lock );
}
/*****************************************************************************
* intf_Destroy: clean interface after main loop
*****************************************************************************
* This function destroys specific interfaces and close output devices.
*****************************************************************************/
void intf_Destroy( intf_thread_t *p_intf )
{
/* Destroy interfaces */
p_intf->pf_close( p_intf );
#if 0
/* Close input thread, if any (blocking) */
if( p_intf->p_input )
{
input_DestroyThread( p_intf->p_input, NULL );
}
#endif
/* Unlock module */
module_Unneed( p_intf->p_module );
vlc_mutex_destroy( &p_intf->change_lock );
/* Free structure */
free( p_intf );
}