File: Constants.h

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/* Copyright (c) 2005-2018 Jay Berkenbilt
 *
 * This file is part of qpdf.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Versions of qpdf prior to version 7 were released under the terms
 * of version 2.0 of the Artistic License. At your option, you may
 * continue to consider qpdf to be licensed under those terms. Please
 * see the manual for additional information.
 */

#ifndef __QPDFCONSTANTS_H__
#define __QPDFCONSTANTS_H__

/* Keep this file 'C' compatible so it can be used from the C and C++
 * interfaces.
 */

/* Error Codes */

enum qpdf_error_code_e
{
    qpdf_e_success = 0,
    qpdf_e_internal,	 	/* logic/programming error -- indicates bug */
    qpdf_e_system,		/* I/O error, memory error, etc. */
    qpdf_e_unsupported,		/* PDF feature not (yet) supported by qpdf */
    qpdf_e_password,		/* incorrect password for encrypted file */
    qpdf_e_damaged_pdf,		/* syntax errors or other damage in PDF */
    qpdf_e_pages,               /* erroneous or unsupported pages structure */
};

/* Write Parameters. See QPDFWriter.hh for details. */

enum qpdf_object_stream_e
{
    qpdf_o_disable = 0,		/* disable object streams */
    qpdf_o_preserve,		/* preserve object streams */
    qpdf_o_generate		/* generate object streams */
};
enum qpdf_stream_data_e
{
    qpdf_s_uncompress = 0,	/* uncompress stream data */
    qpdf_s_preserve,		/* preserve stream data compression */
    qpdf_s_compress		/* compress stream data */
};

/* Stream data flags */

/* See pipeStreamData in QPDFObjectHandle.hh for details on these flags. */
enum qpdf_stream_encode_flags_e
{
    qpdf_ef_compress  = 1 << 0, /* compress uncompressed streams */
    qpdf_ef_normalize = 1 << 1, /* normalize content stream */
};
enum qpdf_stream_decode_level_e
{
    /* These must be in order from less to more decoding. */
    qpdf_dl_none = 0,           /* preserve all stream filters */
    qpdf_dl_generalized,        /* decode general-purpose filters */
    qpdf_dl_specialized,        /* also decode other non-lossy filters */
    qpdf_dl_all                 /* also decode loss filters */
};

/* R3 Encryption Parameters */

enum qpdf_r3_print_e
{
    qpdf_r3p_full = 0,		/* allow all printing */
    qpdf_r3p_low,		/* allow only low-resolution printing */
    qpdf_r3p_none		/* allow no printing */
};
enum qpdf_r3_modify_e		/* Allowed changes: */
{
    qpdf_r3m_all = 0,		/* General editing, comments, forms */
    qpdf_r3m_annotate,	        /* Comments, form field fill-in, and signing */
    qpdf_r3m_form,		/* form field fill-in and signing */
    qpdf_r3m_assembly,		/* only document assembly */
    qpdf_r3m_none		/* no modifications */
};

#endif /* __QPDFCONSTANTS_H__ */