-/* exif-utils.h
- *
- * Copyright © 2001 Lutz Müller <lutz@users.sourceforge.net>
+/*! \file exif-utils.h
+ * \brief EXIF data manipulation functions and types
+ */
+/*
+ * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
*/
#ifndef __EXIF_UTILS_H__
#endif /* __cplusplus */
#include <libexif/exif-byte-order.h>
+#include <libexif/exif-format.h>
+#include <libexif/_stdint.h>
-/* Works correct only on machines with a stdint.h, otherwise it assumes
- * sizeof(long) == 4 */
-
-#ifdef HAVE_INTTYPES_H
-#include <stdint.h>
-typedef char ExifByte; /* 1 byte */
+
+/* If these definitions don't work for you, please let us fix the
+ * macro generating _stdint.h */
+
+/*! EXIF Unsigned Byte data type */
+typedef unsigned char ExifByte; /* 1 byte */
+
+/*! EXIF Signed Byte data type */
+typedef signed char ExifSByte; /* 1 byte */
+
+/*! EXIF Text String data type */
typedef char * ExifAscii;
+
+/*! EXIF Unsigned Short data type */
typedef uint16_t ExifShort; /* 2 bytes */
+
+/*! EXIF Signed Short data type */
+typedef int16_t ExifSShort; /* 2 bytes */
+
+/*! EXIF Unsigned Long data type */
typedef uint32_t ExifLong; /* 4 bytes */
-typedef struct {ExifLong numerator; ExifLong denominator;} ExifRational;
-typedef char ExifUndefined; /* 1 byte */
+
+/*! EXIF Signed Long data type */
typedef int32_t ExifSLong; /* 4 bytes */
-typedef struct {ExifSLong numerator; ExifSLong denominator;} ExifSRational;
-#else
-typedef char ExifByte; /* 1 byte */
-typedef char * ExifAscii;
-typedef unsigned short ExifShort; /* 2 bytes */
-typedef unsigned long ExifLong; /* 4 bytes */
+/*! EXIF Unsigned Rational data type */
typedef struct {ExifLong numerator; ExifLong denominator;} ExifRational;
+
typedef char ExifUndefined; /* 1 byte */
-typedef signed long ExifSLong; /* 4 bytes */
+
+/*! EXIF Signed Rational data type */
typedef struct {ExifSLong numerator; ExifSLong denominator;} ExifSRational;
-#endif
+
+/*! Retrieve an #ExifShort value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
ExifShort exif_get_short (const unsigned char *b, ExifByteOrder order);
+
+/*! Retrieve an #ExifSShort value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
+ExifSShort exif_get_sshort (const unsigned char *b, ExifByteOrder order);
+
+/*! Retrieve an #ExifLong value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
ExifLong exif_get_long (const unsigned char *b, ExifByteOrder order);
+
+/*! Retrieve an #ExifSLong value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
ExifSLong exif_get_slong (const unsigned char *b, ExifByteOrder order);
+
+/*! Retrieve an #ExifRational value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
ExifRational exif_get_rational (const unsigned char *b, ExifByteOrder order);
+
+/*! Retrieve an #ExifSRational value from memory.
+ *
+ * \param[in] b pointer to raw EXIF value in memory
+ * \param[in] order byte order of raw value
+ * \return value
+ */
ExifSRational exif_get_srational (const unsigned char *b, ExifByteOrder order);
+/*! Store an ExifShort value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
void exif_set_short (unsigned char *b, ExifByteOrder order,
ExifShort value);
+
+/*! Store an ExifSShort value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
+void exif_set_sshort (unsigned char *b, ExifByteOrder order,
+ ExifSShort value);
+
+/*! Store an ExifLong value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
void exif_set_long (unsigned char *b, ExifByteOrder order,
ExifLong value);
+
+/*! Store an ExifSLong value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
void exif_set_slong (unsigned char *b, ExifByteOrder order,
ExifSLong value);
+
+/*! Store an ExifRational value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
void exif_set_rational (unsigned char *b, ExifByteOrder order,
ExifRational value);
+
+/*! Store an ExifSRational value into memory in EXIF format.
+ *
+ * \param[out] b buffer in which to write raw value
+ * \param[in] order byte order to use
+ * \param[in] value data value to store
+ */
void exif_set_srational (unsigned char *b, ExifByteOrder order,
ExifSRational value);
+/*! \internal */
+void exif_convert_utf16_to_utf8 (char *out, const unsigned char *in, int maxlen);
+
+/* Please do not use this function outside of the library. */
+
+/*! \internal */
+void exif_array_set_byte_order (ExifFormat, unsigned char *, unsigned int,
+ ExifByteOrder o_orig, ExifByteOrder o_new);
+
+#undef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+
+#undef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+
/* For compatibility with older versions */
+
+/*! \deprecated Use EXIF_TAG_SUB_SEC_TIME instead. */
#define EXIF_TAG_SUBSEC_TIME EXIF_TAG_SUB_SEC_TIME
#ifdef __cplusplus
projects / platform / upstream / libexif.git / blobdiff