/* Copyright (C) 2001-2006 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied, modified
   or distributed except as expressly authorized under the terms of that
   license.  Refer to licensing information at http://www.artifex.com/
   or contact Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134,
   San Rafael, CA  94903, U.S.A., +1(415)492-9861, for further information.
*/

/* $Id$ */
/* (T)BCP filter creation */
#include "memory_.h"
#include "ghost.h"
#include "oper.h"
#include "gsstruct.h"
#include "ialloc.h"
#include "stream.h"
#include "strimpl.h"
#include "sbcp.h"
#include "ifilter.h"

/* Define null handlers for the BCP out-of-band signals. */
static int
no_bcp_signal_interrupt(stream_state * st)
{
    return 0;
}
static int
no_bcp_request_status(stream_state * st)
{
    return 0;
}

/* <source> BCPEncode/filter <file> */
/* <source> <dict> BCPEncode/filter <file> */
static int
zBCPE(i_ctx_t *i_ctx_p)
{
    return filter_write_simple(i_ctx_p, &s_BCPE_template);
}

/* <target> BCPDecode/filter <file> */
/* <target> <dict> BCPDecode/filter <file> */
static int
zBCPD(i_ctx_t *i_ctx_p)
{
    stream_BCPD_state state;

    state.signal_interrupt = no_bcp_signal_interrupt;
    state.request_status = no_bcp_request_status;
    return filter_read(i_ctx_p, 0, &s_BCPD_template, (stream_state *)&state, 0);
}

/* <source> TBCPEncode/filter <file> */
/* <source> <dict> TBCPEncode/filter <file> */
static int
zTBCPE(i_ctx_t *i_ctx_p)
{
    return filter_write_simple(i_ctx_p, &s_TBCPE_template);
}

/* <target> TBCPDecode/filter <file> */
/* <target> <dict> TBCPDecode/filter <file> */
static int
zTBCPD(i_ctx_t *i_ctx_p)
{
    stream_BCPD_state state;

    state.signal_interrupt = no_bcp_signal_interrupt;
    state.request_status = no_bcp_request_status;
    return filter_read(i_ctx_p, 0, &s_TBCPD_template, (stream_state *)&state, 0);
}

/* ------ Initialization procedure ------ */

const op_def zfbcp_op_defs[] =
{
    op_def_begin_filter(),
    {"1BCPEncode", zBCPE},
    {"1BCPDecode", zBCPD},
    {"1TBCPEncode", zTBCPE},
    {"1TBCPDecode", zTBCPD},
    op_def_end(0)
};