vlc/plugins/dummy/input_dummy.c

/*****************************************************************************
 * input_dummy.c: dummy input plugin, to manage "vlc:***" special options
 *****************************************************************************
 * Copyright (C) 2001 VideoLAN
 * $Id: input_dummy.c,v 1.1 2001/06/07 01:10:33 sam Exp $
 *
 * Authors: Samuel Hocevar <sam@zoy.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
 * 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.
 *****************************************************************************/

#define MODULE_NAME dummy
#include "modules_inner.h"

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include "defs.h"

#include <stdlib.h>
#include <string.h>
#include <errno.h>

#ifdef STRNCASECMP_IN_STRINGS_H
#   include <strings.h>
#endif

#include "config.h"
#include "common.h"
#include "threads.h"
#include "mtime.h"
#include "tests.h"

#include "interface.h"
#include "intf_msg.h"

#include "main.h"

#include "stream_control.h"
#include "input_ext-intf.h"
#include "input_ext-dec.h"

#include "input.h"

#include "modules.h"
#include "modules_export.h"

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static int  DummyProbe     ( probedata_t * );
static void DummyOpen      ( struct input_thread_s * );
static void DummyClose     ( struct input_thread_s * );

/*****************************************************************************
 * Functions exported as capabilities. They are declared as static so that
 * we don't pollute the namespace too much.
 *****************************************************************************/
void _M( input_getfunctions )( function_list_t * p_function_list )
{
#define input p_function_list->functions.input
    p_function_list->pf_probe = DummyProbe;
    input.pf_init             = NULL; /* Not needed, open is called first */
    input.pf_open             = DummyOpen;
    input.pf_close            = DummyClose;
    input.pf_end              = NULL;
    input.pf_set_area         = NULL;
    input.pf_read             = NULL;
    input.pf_demux            = NULL;
    input.pf_new_packet       = NULL;
    input.pf_new_pes          = NULL;
    input.pf_delete_packet    = NULL;
    input.pf_delete_pes       = NULL;
    input.pf_rewind           = NULL;
    input.pf_seek             = NULL;
#undef input
}

/*
 * Data reading functions
 */

/*****************************************************************************
 * DummyProbe: verifies that the input is a vlc command
 *****************************************************************************/
static int DummyProbe( probedata_t *p_data )
{
    input_thread_t *p_input = (input_thread_t *)p_data;
    char *psz_name = p_input->p_source;

    if( TestMethod( INPUT_METHOD_VAR, "dummy" ) )
    {
        return( 999 );
    }

    if( ( strlen(psz_name) > 4 ) && !strncasecmp( psz_name, "vlc:", 4 ) )
    {
        /* If the user specified "vlc:" then it's probably a file */
        return( 100 );
    }

    return( 1 );
}

/*****************************************************************************
 * DummyOpen: open the target, ie. do what the command says
 *****************************************************************************/
static void DummyOpen( input_thread_t * p_input )
{
    char *psz_name = p_input->p_source;
    int   i_len = strlen( psz_name );
    int   i_arg;
    
    /* XXX: Tell the input layer to quit immediately, there must
     * be a nicer way to do this. */
    p_input->b_error = 1;

    if( ( i_len <= 4 ) || strncasecmp( psz_name, "vlc:", 4 ) )
    {
        /* If the user specified "vlc:" then it's probably a file */
        return;
    }

    /* We don't need the "vlc:" stuff any more */
    psz_name += 4;
    i_len -= 4;

    /* Check for a "vlc:quit" command */
    if( i_len == 4 && !strncasecmp( psz_name, "quit", 4 ) )
    {
        intf_WarnMsg( 1, "input: playlist command `quit'" );
        p_main->p_intf->b_die = 1;
        return;
    }

    /* Check for a "vlc:pause:***" command */
    if( i_len > 6 && !strncasecmp( psz_name, "pause:", 6 ) )
    {
        i_arg = atoi( psz_name + 6 );

        intf_WarnMsg( 1, "input: playlist command `pause %i'", i_arg );
        intf_FlushMsg();

        msleep( i_arg * 1000000 );
        return;
    }

    intf_ErrMsg( "input error: unknown playlist command `%s'", psz_name );

}

/*****************************************************************************
 * DummyClose: close the target, ie. do nothing
 *****************************************************************************/
static void DummyClose( input_thread_t * p_input )
{
    return;
}