WIP - add extractor, generate snippet_data
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Stefan Fejes
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node_modules/sharp/vendor/include/libexif/exif-utils.h
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node_modules/sharp/vendor/include/libexif/exif-utils.h
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/*! \file exif-utils.h
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* \brief EXIF data manipulation functions and types
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*/
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/*
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* Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*/
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#ifndef __EXIF_UTILS_H__
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#define __EXIF_UTILS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include <libexif/exif-byte-order.h>
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#include <libexif/exif-format.h>
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#include <libexif/_stdint.h>
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/* If these definitions don't work for you, please let us fix the
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* macro generating _stdint.h */
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/*! EXIF Unsigned Byte data type */
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typedef unsigned char ExifByte; /* 1 byte */
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/*! EXIF Signed Byte data type */
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typedef signed char ExifSByte; /* 1 byte */
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/*! EXIF Text String data type */
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typedef char * ExifAscii;
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/*! EXIF Unsigned Short data type */
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typedef uint16_t ExifShort; /* 2 bytes */
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/*! EXIF Signed Short data type */
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typedef int16_t ExifSShort; /* 2 bytes */
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/*! EXIF Unsigned Long data type */
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typedef uint32_t ExifLong; /* 4 bytes */
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/*! EXIF Signed Long data type */
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typedef int32_t ExifSLong; /* 4 bytes */
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/*! EXIF Unsigned Rational data type */
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typedef struct {ExifLong numerator; ExifLong denominator;} ExifRational;
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typedef char ExifUndefined; /* 1 byte */
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/*! EXIF Signed Rational data type */
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typedef struct {ExifSLong numerator; ExifSLong denominator;} ExifSRational;
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/*! Retrieve an #ExifShort value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifShort exif_get_short (const unsigned char *b, ExifByteOrder order);
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/*! Retrieve an #ExifSShort value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifSShort exif_get_sshort (const unsigned char *b, ExifByteOrder order);
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/*! Retrieve an #ExifLong value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifLong exif_get_long (const unsigned char *b, ExifByteOrder order);
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/*! Retrieve an #ExifSLong value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifSLong exif_get_slong (const unsigned char *b, ExifByteOrder order);
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/*! Retrieve an #ExifRational value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifRational exif_get_rational (const unsigned char *b, ExifByteOrder order);
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/*! Retrieve an #ExifSRational value from memory.
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*
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* \param[in] b pointer to raw EXIF value in memory
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* \param[in] order byte order of raw value
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* \return value
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*/
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ExifSRational exif_get_srational (const unsigned char *b, ExifByteOrder order);
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/*! Store an ExifShort value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_short (unsigned char *b, ExifByteOrder order,
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ExifShort value);
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/*! Store an ExifSShort value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_sshort (unsigned char *b, ExifByteOrder order,
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ExifSShort value);
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/*! Store an ExifLong value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_long (unsigned char *b, ExifByteOrder order,
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ExifLong value);
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/*! Store an ExifSLong value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_slong (unsigned char *b, ExifByteOrder order,
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ExifSLong value);
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/*! Store an ExifRational value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_rational (unsigned char *b, ExifByteOrder order,
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ExifRational value);
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/*! Store an ExifSRational value into memory in EXIF format.
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*
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* \param[out] b buffer in which to write raw value
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* \param[in] order byte order to use
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* \param[in] value data value to store
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*/
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void exif_set_srational (unsigned char *b, ExifByteOrder order,
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ExifSRational value);
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/*! \internal */
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void exif_convert_utf16_to_utf8 (char *out, const unsigned short *in, int maxlen);
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/* Please do not use this function outside of the library. */
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/*! \internal */
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void exif_array_set_byte_order (ExifFormat, unsigned char *, unsigned int,
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ExifByteOrder o_orig, ExifByteOrder o_new);
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#undef MIN
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#undef MAX
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#define MAX(a, b) (((a) > (b)) ? (a) : (b))
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/* For compatibility with older versions */
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/*! \deprecated Use EXIF_TAG_SUB_SEC_TIME instead. */
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#define EXIF_TAG_SUBSEC_TIME EXIF_TAG_SUB_SEC_TIME
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __EXIF_UTILS_H__ */
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