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https://github.com/qpdf/qpdf.git
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9744414c66
This commit adds several API methods that enable control over which types of filters QPDF will attempt to decode. It also adds support for /RunLengthDecode and /DCTDecode filters for both encoding and decoding.
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/* Copyright (c) 2005-2015 Jay Berkenbilt
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*
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* This file is part of qpdf. This software may be distributed under
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* the terms of version 2 of the Artistic License which may be found
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* in the source distribution. It is provided "as is" without express
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* or implied warranty.
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*/
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#ifndef __QPDFCONSTANTS_H__
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#define __QPDFCONSTANTS_H__
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/* Keep this file 'C' compatible so it can be used from the C and C++
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* interfaces.
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*/
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/* Error Codes */
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enum qpdf_error_code_e
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{
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qpdf_e_success = 0,
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qpdf_e_internal, /* logic/programming error -- indicates bug */
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qpdf_e_system, /* I/O error, memory error, etc. */
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qpdf_e_unsupported, /* PDF feature not (yet) supported by qpdf */
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qpdf_e_password, /* incorrect password for encrypted file */
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qpdf_e_damaged_pdf, /* syntax errors or other damage in PDF */
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qpdf_e_pages, /* erroneous or unsupported pages structure */
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};
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/* Write Parameters. See QPDFWriter.hh for details. */
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enum qpdf_object_stream_e
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{
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qpdf_o_disable = 0, /* disable object streams */
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qpdf_o_preserve, /* preserve object streams */
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qpdf_o_generate /* generate object streams */
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};
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enum qpdf_stream_data_e
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{
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qpdf_s_uncompress = 0, /* uncompress stream data */
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qpdf_s_preserve, /* preserve stream data compression */
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qpdf_s_compress /* compress stream data */
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};
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/* Stream data flags */
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/* See pipeStreamData in QPDFObjectHandle.hh for details on these flags. */
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enum qpdf_stream_encode_flags_e
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{
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qpdf_ef_compress = 1 << 0, /* compress uncompressed streams */
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qpdf_ef_normalize = 1 << 1, /* normalize content stream */
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};
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enum qpdf_stream_decode_level_e
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{
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/* These must be in order from less to more decoding. */
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qpdf_dl_none = 0, /* preserve all stream filters */
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qpdf_dl_generalized, /* decode general-purpose filters */
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qpdf_dl_specialized, /* also decode other non-lossy filters */
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qpdf_dl_all /* also decode loss filters */
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};
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/* R3 Encryption Parameters */
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enum qpdf_r3_print_e
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{
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qpdf_r3p_full = 0, /* allow all printing */
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qpdf_r3p_low, /* allow only low-resolution printing */
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qpdf_r3p_none /* allow no printing */
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};
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enum qpdf_r3_modify_e /* Allowed changes: */
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{
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qpdf_r3m_all = 0, /* General editing, comments, forms */
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qpdf_r3m_annotate, /* Comments, form field fill-in, and signing */
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qpdf_r3m_form, /* form field fill-in and signing */
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qpdf_r3m_assembly, /* only document assembly */
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qpdf_r3m_none /* no modifications */
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};
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#endif /* __QPDFCONSTANTS_H__ */
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