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exif.c
4196 lines (3857 loc) · 142 KB
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exif.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2010 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Marcus Boerger <helly@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* ToDos
*
* See if example images from http://www.exif.org have illegal
* thumbnail sizes or if code is corrupt.
* Create/Update exif headers.
* Create/Remove/Update image thumbnails.
*/
/* Security
*
* At current time i do not see any security problems but a potential
* attacker could generate an image with recursive ifd pointers...(Marcus)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "ext/standard/file.h"
#if HAVE_EXIF
/* When EXIF_DEBUG is defined the module generates a lot of debug messages
* that help understanding what is going on. This can and should be used
* while extending the module as it shows if you are at the right position.
* You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard.
*/
#undef EXIF_DEBUG
#ifdef EXIF_DEBUG
#define EXIFERR_DC , const char *_file, size_t _line TSRMLS_DC
#define EXIFERR_CC , __FILE__, __LINE__ TSRMLS_CC
#else
#define EXIFERR_DC TSRMLS_DC
#define EXIFERR_CC TSRMLS_CC
#endif
#undef EXIF_JPEG2000
#include "php_exif.h"
#include <math.h>
#include "php_ini.h"
#include "ext/standard/php_string.h"
#include "ext/standard/php_image.h"
#include "ext/standard/info.h"
#if defined(PHP_WIN32) || (HAVE_MBSTRING && !defined(COMPILE_DL_MBSTRING))
#define EXIF_USE_MBSTRING 1
#else
#define EXIF_USE_MBSTRING 0
#endif
#if EXIF_USE_MBSTRING
#include "ext/mbstring/mbstring.h"
#endif
/* needed for ssize_t definition */
#include <sys/types.h>
typedef unsigned char uchar;
#ifndef safe_emalloc
# define safe_emalloc(a,b,c) emalloc((a)*(b)+(c))
#endif
#ifndef safe_erealloc
# define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c))
#endif
#ifndef TRUE
# define TRUE 1
# define FALSE 0
#endif
#ifndef max
# define max(a,b) ((a)>(b) ? (a) : (b))
#endif
#define EFREE_IF(ptr) if (ptr) efree(ptr)
#define MAX_IFD_NESTING_LEVEL 100
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0)
ZEND_ARG_INFO(0, index)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(0, sections_needed)
ZEND_ARG_INFO(0, sub_arrays)
ZEND_ARG_INFO(0, read_thumbnail)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1)
ZEND_ARG_INFO(0, filename)
ZEND_ARG_INFO(1, width)
ZEND_ARG_INFO(1, height)
ZEND_ARG_INFO(1, imagetype)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0)
ZEND_ARG_INFO(0, imagefile)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ exif_functions[]
*/
const zend_function_entry exif_functions[] = {
PHP_FE(exif_read_data, arginfo_exif_read_data)
PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data)
PHP_FE(exif_tagname, arginfo_exif_tagname)
PHP_FE(exif_thumbnail, arginfo_exif_thumbnail)
PHP_FE(exif_imagetype, arginfo_exif_imagetype)
{NULL, NULL, NULL}
};
/* }}} */
#define EXIF_VERSION "1.4 $Id$"
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(exif)
{
php_info_print_table_start();
php_info_print_table_row(2, "EXIF Support", "enabled");
php_info_print_table_row(2, "EXIF Version", EXIF_VERSION);
php_info_print_table_row(2, "Supported EXIF Version", "0220");
php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF");
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
ZEND_BEGIN_MODULE_GLOBALS(exif)
char * encode_unicode;
char * decode_unicode_be;
char * decode_unicode_le;
char * encode_jis;
char * decode_jis_be;
char * decode_jis_le;
ZEND_END_MODULE_GLOBALS(exif)
ZEND_DECLARE_MODULE_GLOBALS(exif)
#ifdef ZTS
#define EXIF_G(v) TSRMG(exif_globals_id, zend_exif_globals *, v)
#else
#define EXIF_G(v) (exif_globals.v)
#endif
/* {{{ PHP_INI
*/
ZEND_INI_MH(OnUpdateEncode)
{
#if EXIF_USE_MBSTRING
if (new_value && strlen(new_value) && !php_mb_check_encoding_list(new_value TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
return FAILURE;
}
#endif
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
ZEND_INI_MH(OnUpdateDecode)
{
#if EXIF_USE_MBSTRING
if (!php_mb_check_encoding_list(new_value TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal encoding ignored: '%s'", new_value);
return FAILURE;
}
#endif
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals)
STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals)
PHP_INI_END()
/* }}} */
/* {{{ PHP_GINIT_FUNCTION
*/
static PHP_GINIT_FUNCTION(exif)
{
exif_globals->encode_unicode = NULL;
exif_globals->decode_unicode_be = NULL;
exif_globals->decode_unicode_le = NULL;
exif_globals->encode_jis = NULL;
exif_globals->decode_jis_be = NULL;
exif_globals->decode_jis_le = NULL;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(exif)
Get the size of an image as 4-element array */
PHP_MINIT_FUNCTION(exif)
{
REGISTER_INI_ENTRIES();
REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", EXIF_USE_MBSTRING, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(exif)
{
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
/* }}} */
/* {{{ exif dependencies */
static const zend_module_dep exif_module_deps[] = {
ZEND_MOD_REQUIRED("standard")
#if EXIF_USE_MBSTRING
ZEND_MOD_REQUIRED("mbstring")
#endif
{NULL, NULL, NULL}
};
/* }}} */
/* {{{ exif_module_entry
*/
zend_module_entry exif_module_entry = {
STANDARD_MODULE_HEADER_EX, NULL,
exif_module_deps,
"exif",
exif_functions,
PHP_MINIT(exif),
PHP_MSHUTDOWN(exif),
NULL, NULL,
PHP_MINFO(exif),
#if ZEND_MODULE_API_NO >= 20010901
EXIF_VERSION,
#endif
#if ZEND_MODULE_API_NO >= 20060613
PHP_MODULE_GLOBALS(exif),
PHP_GINIT(exif),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
#else
STANDARD_MODULE_PROPERTIES
#endif
};
/* }}} */
#ifdef COMPILE_DL_EXIF
ZEND_GET_MODULE(exif)
#endif
/* {{{ php_strnlen
* get length of string if buffer if less than buffer size or buffer size */
static size_t php_strnlen(char* str, size_t maxlen) {
size_t len = 0;
if (str && maxlen && *str) {
do {
len++;
} while (--maxlen && *(++str));
}
return len;
}
/* }}} */
/* {{{ error messages
*/
static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached";
static const char * EXIF_ERROR_CORRUPT = "File structure corrupted";
static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached";
static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section";
#define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF);
#define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT);
#define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF);
#define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC);
/* }}} */
/* {{{ format description defines
Describes format descriptor
*/
static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1};
#define NUM_FORMATS 13
#define TAG_FMT_BYTE 1
#define TAG_FMT_STRING 2
#define TAG_FMT_USHORT 3
#define TAG_FMT_ULONG 4
#define TAG_FMT_URATIONAL 5
#define TAG_FMT_SBYTE 6
#define TAG_FMT_UNDEFINED 7
#define TAG_FMT_SSHORT 8
#define TAG_FMT_SLONG 9
#define TAG_FMT_SRATIONAL 10
#define TAG_FMT_SINGLE 11
#define TAG_FMT_DOUBLE 12
#define TAG_FMT_IFD 13
#ifdef EXIF_DEBUG
static char *exif_get_tagformat(int format)
{
switch(format) {
case TAG_FMT_BYTE: return "BYTE";
case TAG_FMT_STRING: return "STRING";
case TAG_FMT_USHORT: return "USHORT";
case TAG_FMT_ULONG: return "ULONG";
case TAG_FMT_URATIONAL: return "URATIONAL";
case TAG_FMT_SBYTE: return "SBYTE";
case TAG_FMT_UNDEFINED: return "UNDEFINED";
case TAG_FMT_SSHORT: return "SSHORT";
case TAG_FMT_SLONG: return "SLONG";
case TAG_FMT_SRATIONAL: return "SRATIONAL";
case TAG_FMT_SINGLE: return "SINGLE";
case TAG_FMT_DOUBLE: return "DOUBLE";
case TAG_FMT_IFD: return "IFD";
}
return "*Illegal";
}
#endif
/* Describes tag values */
#define TAG_GPS_VERSION_ID 0x0000
#define TAG_GPS_LATITUDE_REF 0x0001
#define TAG_GPS_LATITUDE 0x0002
#define TAG_GPS_LONGITUDE_REF 0x0003
#define TAG_GPS_LONGITUDE 0x0004
#define TAG_GPS_ALTITUDE_REF 0x0005
#define TAG_GPS_ALTITUDE 0x0006
#define TAG_GPS_TIME_STAMP 0x0007
#define TAG_GPS_SATELLITES 0x0008
#define TAG_GPS_STATUS 0x0009
#define TAG_GPS_MEASURE_MODE 0x000A
#define TAG_GPS_DOP 0x000B
#define TAG_GPS_SPEED_REF 0x000C
#define TAG_GPS_SPEED 0x000D
#define TAG_GPS_TRACK_REF 0x000E
#define TAG_GPS_TRACK 0x000F
#define TAG_GPS_IMG_DIRECTION_REF 0x0010
#define TAG_GPS_IMG_DIRECTION 0x0011
#define TAG_GPS_MAP_DATUM 0x0012
#define TAG_GPS_DEST_LATITUDE_REF 0x0013
#define TAG_GPS_DEST_LATITUDE 0x0014
#define TAG_GPS_DEST_LONGITUDE_REF 0x0015
#define TAG_GPS_DEST_LONGITUDE 0x0016
#define TAG_GPS_DEST_BEARING_REF 0x0017
#define TAG_GPS_DEST_BEARING 0x0018
#define TAG_GPS_DEST_DISTANCE_REF 0x0019
#define TAG_GPS_DEST_DISTANCE 0x001A
#define TAG_GPS_PROCESSING_METHOD 0x001B
#define TAG_GPS_AREA_INFORMATION 0x001C
#define TAG_GPS_DATE_STAMP 0x001D
#define TAG_GPS_DIFFERENTIAL 0x001E
#define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */
#define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */
#define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */
#define TAG_IMAGEWIDTH 0x0100
#define TAG_IMAGEHEIGHT 0x0101
#define TAG_BITS_PER_SAMPLE 0x0102
#define TAG_COMPRESSION 0x0103
#define TAG_PHOTOMETRIC_INTERPRETATION 0x0106
#define TAG_TRESHHOLDING 0x0107
#define TAG_CELL_WIDTH 0x0108
#define TAG_CELL_HEIGHT 0x0109
#define TAG_FILL_ORDER 0x010A
#define TAG_DOCUMENT_NAME 0x010D
#define TAG_IMAGE_DESCRIPTION 0x010E
#define TAG_MAKE 0x010F
#define TAG_MODEL 0x0110
#define TAG_STRIP_OFFSETS 0x0111
#define TAG_ORIENTATION 0x0112
#define TAG_SAMPLES_PER_PIXEL 0x0115
#define TAG_ROWS_PER_STRIP 0x0116
#define TAG_STRIP_BYTE_COUNTS 0x0117
#define TAG_MIN_SAMPPLE_VALUE 0x0118
#define TAG_MAX_SAMPLE_VALUE 0x0119
#define TAG_X_RESOLUTION 0x011A
#define TAG_Y_RESOLUTION 0x011B
#define TAG_PLANAR_CONFIGURATION 0x011C
#define TAG_PAGE_NAME 0x011D
#define TAG_X_POSITION 0x011E
#define TAG_Y_POSITION 0x011F
#define TAG_FREE_OFFSETS 0x0120
#define TAG_FREE_BYTE_COUNTS 0x0121
#define TAG_GRAY_RESPONSE_UNIT 0x0122
#define TAG_GRAY_RESPONSE_CURVE 0x0123
#define TAG_RESOLUTION_UNIT 0x0128
#define TAG_PAGE_NUMBER 0x0129
#define TAG_TRANSFER_FUNCTION 0x012D
#define TAG_SOFTWARE 0x0131
#define TAG_DATETIME 0x0132
#define TAG_ARTIST 0x013B
#define TAG_HOST_COMPUTER 0x013C
#define TAG_PREDICTOR 0x013D
#define TAG_WHITE_POINT 0x013E
#define TAG_PRIMARY_CHROMATICITIES 0x013F
#define TAG_COLOR_MAP 0x0140
#define TAG_HALFTONE_HINTS 0x0141
#define TAG_TILE_WIDTH 0x0142
#define TAG_TILE_LENGTH 0x0143
#define TAG_TILE_OFFSETS 0x0144
#define TAG_TILE_BYTE_COUNTS 0x0145
#define TAG_SUB_IFD 0x014A
#define TAG_INK_SETMPUTER 0x014C
#define TAG_INK_NAMES 0x014D
#define TAG_NUMBER_OF_INKS 0x014E
#define TAG_DOT_RANGE 0x0150
#define TAG_TARGET_PRINTER 0x0151
#define TAG_EXTRA_SAMPLE 0x0152
#define TAG_SAMPLE_FORMAT 0x0153
#define TAG_S_MIN_SAMPLE_VALUE 0x0154
#define TAG_S_MAX_SAMPLE_VALUE 0x0155
#define TAG_TRANSFER_RANGE 0x0156
#define TAG_JPEG_TABLES 0x015B
#define TAG_JPEG_PROC 0x0200
#define TAG_JPEG_INTERCHANGE_FORMAT 0x0201
#define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
#define TAG_JPEG_RESTART_INTERVAL 0x0203
#define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205
#define TAG_JPEG_POINT_TRANSFORMS 0x0206
#define TAG_JPEG_Q_TABLES 0x0207
#define TAG_JPEG_DC_TABLES 0x0208
#define TAG_JPEG_AC_TABLES 0x0209
#define TAG_YCC_COEFFICIENTS 0x0211
#define TAG_YCC_SUB_SAMPLING 0x0212
#define TAG_YCC_POSITIONING 0x0213
#define TAG_REFERENCE_BLACK_WHITE 0x0214
/* 0x0301 - 0x0302 */
/* 0x0320 */
/* 0x0343 */
/* 0x5001 - 0x501B */
/* 0x5021 - 0x503B */
/* 0x5090 - 0x5091 */
/* 0x5100 - 0x5101 */
/* 0x5110 - 0x5113 */
/* 0x80E3 - 0x80E6 */
/* 0x828d - 0x828F */
#define TAG_COPYRIGHT 0x8298
#define TAG_EXPOSURETIME 0x829A
#define TAG_FNUMBER 0x829D
#define TAG_EXIF_IFD_POINTER 0x8769
#define TAG_ICC_PROFILE 0x8773
#define TAG_EXPOSURE_PROGRAM 0x8822
#define TAG_SPECTRAL_SENSITY 0x8824
#define TAG_GPS_IFD_POINTER 0x8825
#define TAG_ISOSPEED 0x8827
#define TAG_OPTOELECTRIC_CONVERSION_F 0x8828
/* 0x8829 - 0x882b */
#define TAG_EXIFVERSION 0x9000
#define TAG_DATE_TIME_ORIGINAL 0x9003
#define TAG_DATE_TIME_DIGITIZED 0x9004
#define TAG_COMPONENT_CONFIG 0x9101
#define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102
#define TAG_SHUTTERSPEED 0x9201
#define TAG_APERTURE 0x9202
#define TAG_BRIGHTNESS_VALUE 0x9203
#define TAG_EXPOSURE_BIAS_VALUE 0x9204
#define TAG_MAX_APERTURE 0x9205
#define TAG_SUBJECT_DISTANCE 0x9206
#define TAG_METRIC_MODULE 0x9207
#define TAG_LIGHT_SOURCE 0x9208
#define TAG_FLASH 0x9209
#define TAG_FOCAL_LENGTH 0x920A
/* 0x920B - 0x920D */
/* 0x9211 - 0x9216 */
#define TAG_SUBJECT_AREA 0x9214
#define TAG_MAKER_NOTE 0x927C
#define TAG_USERCOMMENT 0x9286
#define TAG_SUB_SEC_TIME 0x9290
#define TAG_SUB_SEC_TIME_ORIGINAL 0x9291
#define TAG_SUB_SEC_TIME_DIGITIZED 0x9292
/* 0x923F */
/* 0x935C */
#define TAG_XP_TITLE 0x9C9B
#define TAG_XP_COMMENTS 0x9C9C
#define TAG_XP_AUTHOR 0x9C9D
#define TAG_XP_KEYWORDS 0x9C9E
#define TAG_XP_SUBJECT 0x9C9F
#define TAG_FLASH_PIX_VERSION 0xA000
#define TAG_COLOR_SPACE 0xA001
#define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */
#define TAG_COMP_IMAGE_HEIGHT 0xA003
#define TAG_RELATED_SOUND_FILE 0xA004
#define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */
#define TAG_FLASH_ENERGY 0xA20B
#define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C
#define TAG_FOCALPLANE_X_RES 0xA20E
#define TAG_FOCALPLANE_Y_RES 0xA20F
#define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210
#define TAG_SUBJECT_LOCATION 0xA214
#define TAG_EXPOSURE_INDEX 0xA215
#define TAG_SENSING_METHOD 0xA217
#define TAG_FILE_SOURCE 0xA300
#define TAG_SCENE_TYPE 0xA301
#define TAG_CFA_PATTERN 0xA302
#define TAG_CUSTOM_RENDERED 0xA401
#define TAG_EXPOSURE_MODE 0xA402
#define TAG_WHITE_BALANCE 0xA403
#define TAG_DIGITAL_ZOOM_RATIO 0xA404
#define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405
#define TAG_SCENE_CAPTURE_TYPE 0xA406
#define TAG_GAIN_CONTROL 0xA407
#define TAG_CONTRAST 0xA408
#define TAG_SATURATION 0xA409
#define TAG_SHARPNESS 0xA40A
#define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B
#define TAG_SUBJECT_DISTANCE_RANGE 0xA40C
#define TAG_IMAGE_UNIQUE_ID 0xA420
/* Olympus specific tags */
#define TAG_OLYMPUS_SPECIALMODE 0x0200
#define TAG_OLYMPUS_JPEGQUAL 0x0201
#define TAG_OLYMPUS_MACRO 0x0202
#define TAG_OLYMPUS_DIGIZOOM 0x0204
#define TAG_OLYMPUS_SOFTWARERELEASE 0x0207
#define TAG_OLYMPUS_PICTINFO 0x0208
#define TAG_OLYMPUS_CAMERAID 0x0209
/* end Olympus specific tags */
/* Internal */
#define TAG_NONE -1 /* note that -1 <> 0xFFFF */
#define TAG_COMPUTED_VALUE -2
#define TAG_END_OF_LIST 0xFFFD
/* Values for TAG_PHOTOMETRIC_INTERPRETATION */
#define PMI_BLACK_IS_ZERO 0
#define PMI_WHITE_IS_ZERO 1
#define PMI_RGB 2
#define PMI_PALETTE_COLOR 3
#define PMI_TRANSPARENCY_MASK 4
#define PMI_SEPARATED 5
#define PMI_YCBCR 6
#define PMI_CIELAB 8
/* }}} */
/* {{{ TabTable[]
*/
typedef const struct {
unsigned short Tag;
char *Desc;
} tag_info_type;
typedef tag_info_type tag_info_array[];
typedef tag_info_type *tag_table_type;
#define TAG_TABLE_END \
{TAG_NONE, "No tag value"},\
{TAG_COMPUTED_VALUE, "Computed value"},\
{TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */
static tag_info_array tag_table_IFD = {
{ 0x000B, "ACDComment"},
{ 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */
{ 0x00FF, "SubFile"},
{ 0x0100, "ImageWidth"},
{ 0x0101, "ImageLength"},
{ 0x0102, "BitsPerSample"},
{ 0x0103, "Compression"},
{ 0x0106, "PhotometricInterpretation"},
{ 0x010A, "FillOrder"},
{ 0x010D, "DocumentName"},
{ 0x010E, "ImageDescription"},
{ 0x010F, "Make"},
{ 0x0110, "Model"},
{ 0x0111, "StripOffsets"},
{ 0x0112, "Orientation"},
{ 0x0115, "SamplesPerPixel"},
{ 0x0116, "RowsPerStrip"},
{ 0x0117, "StripByteCounts"},
{ 0x0118, "MinSampleValue"},
{ 0x0119, "MaxSampleValue"},
{ 0x011A, "XResolution"},
{ 0x011B, "YResolution"},
{ 0x011C, "PlanarConfiguration"},
{ 0x011D, "PageName"},
{ 0x011E, "XPosition"},
{ 0x011F, "YPosition"},
{ 0x0120, "FreeOffsets"},
{ 0x0121, "FreeByteCounts"},
{ 0x0122, "GrayResponseUnit"},
{ 0x0123, "GrayResponseCurve"},
{ 0x0124, "T4Options"},
{ 0x0125, "T6Options"},
{ 0x0128, "ResolutionUnit"},
{ 0x0129, "PageNumber"},
{ 0x012D, "TransferFunction"},
{ 0x0131, "Software"},
{ 0x0132, "DateTime"},
{ 0x013B, "Artist"},
{ 0x013C, "HostComputer"},
{ 0x013D, "Predictor"},
{ 0x013E, "WhitePoint"},
{ 0x013F, "PrimaryChromaticities"},
{ 0x0140, "ColorMap"},
{ 0x0141, "HalfToneHints"},
{ 0x0142, "TileWidth"},
{ 0x0143, "TileLength"},
{ 0x0144, "TileOffsets"},
{ 0x0145, "TileByteCounts"},
{ 0x014A, "SubIFD"},
{ 0x014C, "InkSet"},
{ 0x014D, "InkNames"},
{ 0x014E, "NumberOfInks"},
{ 0x0150, "DotRange"},
{ 0x0151, "TargetPrinter"},
{ 0x0152, "ExtraSample"},
{ 0x0153, "SampleFormat"},
{ 0x0154, "SMinSampleValue"},
{ 0x0155, "SMaxSampleValue"},
{ 0x0156, "TransferRange"},
{ 0x0157, "ClipPath"},
{ 0x0158, "XClipPathUnits"},
{ 0x0159, "YClipPathUnits"},
{ 0x015A, "Indexed"},
{ 0x015B, "JPEGTables"},
{ 0x015F, "OPIProxy"},
{ 0x0200, "JPEGProc"},
{ 0x0201, "JPEGInterchangeFormat"},
{ 0x0202, "JPEGInterchangeFormatLength"},
{ 0x0203, "JPEGRestartInterval"},
{ 0x0205, "JPEGLosslessPredictors"},
{ 0x0206, "JPEGPointTransforms"},
{ 0x0207, "JPEGQTables"},
{ 0x0208, "JPEGDCTables"},
{ 0x0209, "JPEGACTables"},
{ 0x0211, "YCbCrCoefficients"},
{ 0x0212, "YCbCrSubSampling"},
{ 0x0213, "YCbCrPositioning"},
{ 0x0214, "ReferenceBlackWhite"},
{ 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */
{ 0x0301, "Gamma"},
{ 0x0302, "ICCProfileDescriptor"},
{ 0x0303, "SRGBRenderingIntent"},
{ 0x0320, "ImageTitle"},
{ 0x5001, "ResolutionXUnit"},
{ 0x5002, "ResolutionYUnit"},
{ 0x5003, "ResolutionXLengthUnit"},
{ 0x5004, "ResolutionYLengthUnit"},
{ 0x5005, "PrintFlags"},
{ 0x5006, "PrintFlagsVersion"},
{ 0x5007, "PrintFlagsCrop"},
{ 0x5008, "PrintFlagsBleedWidth"},
{ 0x5009, "PrintFlagsBleedWidthScale"},
{ 0x500A, "HalftoneLPI"},
{ 0x500B, "HalftoneLPIUnit"},
{ 0x500C, "HalftoneDegree"},
{ 0x500D, "HalftoneShape"},
{ 0x500E, "HalftoneMisc"},
{ 0x500F, "HalftoneScreen"},
{ 0x5010, "JPEGQuality"},
{ 0x5011, "GridSize"},
{ 0x5012, "ThumbnailFormat"},
{ 0x5013, "ThumbnailWidth"},
{ 0x5014, "ThumbnailHeight"},
{ 0x5015, "ThumbnailColorDepth"},
{ 0x5016, "ThumbnailPlanes"},
{ 0x5017, "ThumbnailRawBytes"},
{ 0x5018, "ThumbnailSize"},
{ 0x5019, "ThumbnailCompressedSize"},
{ 0x501A, "ColorTransferFunction"},
{ 0x501B, "ThumbnailData"},
{ 0x5020, "ThumbnailImageWidth"},
{ 0x5021, "ThumbnailImageHeight"},
{ 0x5022, "ThumbnailBitsPerSample"},
{ 0x5023, "ThumbnailCompression"},
{ 0x5024, "ThumbnailPhotometricInterp"},
{ 0x5025, "ThumbnailImageDescription"},
{ 0x5026, "ThumbnailEquipMake"},
{ 0x5027, "ThumbnailEquipModel"},
{ 0x5028, "ThumbnailStripOffsets"},
{ 0x5029, "ThumbnailOrientation"},
{ 0x502A, "ThumbnailSamplesPerPixel"},
{ 0x502B, "ThumbnailRowsPerStrip"},
{ 0x502C, "ThumbnailStripBytesCount"},
{ 0x502D, "ThumbnailResolutionX"},
{ 0x502E, "ThumbnailResolutionY"},
{ 0x502F, "ThumbnailPlanarConfig"},
{ 0x5030, "ThumbnailResolutionUnit"},
{ 0x5031, "ThumbnailTransferFunction"},
{ 0x5032, "ThumbnailSoftwareUsed"},
{ 0x5033, "ThumbnailDateTime"},
{ 0x5034, "ThumbnailArtist"},
{ 0x5035, "ThumbnailWhitePoint"},
{ 0x5036, "ThumbnailPrimaryChromaticities"},
{ 0x5037, "ThumbnailYCbCrCoefficients"},
{ 0x5038, "ThumbnailYCbCrSubsampling"},
{ 0x5039, "ThumbnailYCbCrPositioning"},
{ 0x503A, "ThumbnailRefBlackWhite"},
{ 0x503B, "ThumbnailCopyRight"},
{ 0x5090, "LuminanceTable"},
{ 0x5091, "ChrominanceTable"},
{ 0x5100, "FrameDelay"},
{ 0x5101, "LoopCount"},
{ 0x5110, "PixelUnit"},
{ 0x5111, "PixelPerUnitX"},
{ 0x5112, "PixelPerUnitY"},
{ 0x5113, "PaletteHistogram"},
{ 0x1000, "RelatedImageFileFormat"},
{ 0x800D, "ImageID"},
{ 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */
{ 0x80E4, "DataType"}, /* obsoleted by SampleFormat */
{ 0x80E5, "ImageDepth"},
{ 0x80E6, "TileDepth"},
{ 0x828D, "CFARepeatPatternDim"},
{ 0x828E, "CFAPattern"},
{ 0x828F, "BatteryLevel"},
{ 0x8298, "Copyright"},
{ 0x829A, "ExposureTime"},
{ 0x829D, "FNumber"},
{ 0x83BB, "IPTC/NAA"},
{ 0x84E3, "IT8RasterPadding"},
{ 0x84E5, "IT8ColorTable"},
{ 0x8649, "ImageResourceInformation"}, /* PhotoShop */
{ 0x8769, "Exif_IFD_Pointer"},
{ 0x8773, "ICC_Profile"},
{ 0x8822, "ExposureProgram"},
{ 0x8824, "SpectralSensity"},
{ 0x8828, "OECF"},
{ 0x8825, "GPS_IFD_Pointer"},
{ 0x8827, "ISOSpeedRatings"},
{ 0x8828, "OECF"},
{ 0x9000, "ExifVersion"},
{ 0x9003, "DateTimeOriginal"},
{ 0x9004, "DateTimeDigitized"},
{ 0x9101, "ComponentsConfiguration"},
{ 0x9102, "CompressedBitsPerPixel"},
{ 0x9201, "ShutterSpeedValue"},
{ 0x9202, "ApertureValue"},
{ 0x9203, "BrightnessValue"},
{ 0x9204, "ExposureBiasValue"},
{ 0x9205, "MaxApertureValue"},
{ 0x9206, "SubjectDistance"},
{ 0x9207, "MeteringMode"},
{ 0x9208, "LightSource"},
{ 0x9209, "Flash"},
{ 0x920A, "FocalLength"},
{ 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */
{ 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */
{ 0x920D, "Noise"},
{ 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */
{ 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */
{ 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */
{ 0x9211, "ImageNumber"},
{ 0x9212, "SecurityClassification"},
{ 0x9213, "ImageHistory"},
{ 0x9214, "SubjectLocation"}, /* 0xA214 - - */
{ 0x9215, "ExposureIndex"}, /* 0xA215 - - */
{ 0x9216, "TIFF/EPStandardID"},
{ 0x9217, "SensingMethod"}, /* 0xA217 - - */
{ 0x923F, "StoNits"},
{ 0x927C, "MakerNote"},
{ 0x9286, "UserComment"},
{ 0x9290, "SubSecTime"},
{ 0x9291, "SubSecTimeOriginal"},
{ 0x9292, "SubSecTimeDigitized"},
{ 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */
{ 0x9c9b, "Title" }, /* Win XP specific, Unicode */
{ 0x9c9c, "Comments" }, /* Win XP specific, Unicode */
{ 0x9c9d, "Author" }, /* Win XP specific, Unicode */
{ 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */
{ 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */
{ 0xA000, "FlashPixVersion"},
{ 0xA001, "ColorSpace"},
{ 0xA002, "ExifImageWidth"},
{ 0xA003, "ExifImageLength"},
{ 0xA004, "RelatedSoundFile"},
{ 0xA005, "InteroperabilityOffset"},
{ 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */
{ 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */
{ 0xA20D, "Noise"},
{ 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */
{ 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */
{ 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */
{ 0xA211, "ImageNumber"},
{ 0xA212, "SecurityClassification"},
{ 0xA213, "ImageHistory"},
{ 0xA214, "SubjectLocation"}, /* 0x9214 - - */
{ 0xA215, "ExposureIndex"}, /* 0x9215 - - */
{ 0xA216, "TIFF/EPStandardID"},
{ 0xA217, "SensingMethod"}, /* 0x9217 - - */
{ 0xA300, "FileSource"},
{ 0xA301, "SceneType"},
{ 0xA302, "CFAPattern"},
{ 0xA401, "CustomRendered"},
{ 0xA402, "ExposureMode"},
{ 0xA403, "WhiteBalance"},
{ 0xA404, "DigitalZoomRatio"},
{ 0xA405, "FocalLengthIn35mmFilm"},
{ 0xA406, "SceneCaptureType"},
{ 0xA407, "GainControl"},
{ 0xA408, "Contrast"},
{ 0xA409, "Saturation"},
{ 0xA40A, "Sharpness"},
{ 0xA40B, "DeviceSettingDescription"},
{ 0xA40C, "SubjectDistanceRange"},
{ 0xA420, "ImageUniqueID"},
TAG_TABLE_END
} ;
static tag_info_array tag_table_GPS = {
{ 0x0000, "GPSVersion"},
{ 0x0001, "GPSLatitudeRef"},
{ 0x0002, "GPSLatitude"},
{ 0x0003, "GPSLongitudeRef"},
{ 0x0004, "GPSLongitude"},
{ 0x0005, "GPSAltitudeRef"},
{ 0x0006, "GPSAltitude"},
{ 0x0007, "GPSTimeStamp"},
{ 0x0008, "GPSSatellites"},
{ 0x0009, "GPSStatus"},
{ 0x000A, "GPSMeasureMode"},
{ 0x000B, "GPSDOP"},
{ 0x000C, "GPSSpeedRef"},
{ 0x000D, "GPSSpeed"},
{ 0x000E, "GPSTrackRef"},
{ 0x000F, "GPSTrack"},
{ 0x0010, "GPSImgDirectionRef"},
{ 0x0011, "GPSImgDirection"},
{ 0x0012, "GPSMapDatum"},
{ 0x0013, "GPSDestLatitudeRef"},
{ 0x0014, "GPSDestLatitude"},
{ 0x0015, "GPSDestLongitudeRef"},
{ 0x0016, "GPSDestLongitude"},
{ 0x0017, "GPSDestBearingRef"},
{ 0x0018, "GPSDestBearing"},
{ 0x0019, "GPSDestDistanceRef"},
{ 0x001A, "GPSDestDistance"},
{ 0x001B, "GPSProcessingMode"},
{ 0x001C, "GPSAreaInformation"},
{ 0x001D, "GPSDateStamp"},
{ 0x001E, "GPSDifferential"},
TAG_TABLE_END
};
static tag_info_array tag_table_IOP = {
{ 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */
{ 0x0002, "InterOperabilityVersion"},
{ 0x1000, "RelatedFileFormat"},
{ 0x1001, "RelatedImageWidth"},
{ 0x1002, "RelatedImageHeight"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_CANON = {
{ 0x0001, "ModeArray"}, /* guess */
{ 0x0004, "ImageInfo"}, /* guess */
{ 0x0006, "ImageType"},
{ 0x0007, "FirmwareVersion"},
{ 0x0008, "ImageNumber"},
{ 0x0009, "OwnerName"},
{ 0x000C, "Camera"},
{ 0x000F, "CustomFunctions"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_CASIO = {
{ 0x0001, "RecordingMode"},
{ 0x0002, "Quality"},
{ 0x0003, "FocusingMode"},
{ 0x0004, "FlashMode"},
{ 0x0005, "FlashIntensity"},
{ 0x0006, "ObjectDistance"},
{ 0x0007, "WhiteBalance"},
{ 0x000A, "DigitalZoom"},
{ 0x000B, "Sharpness"},
{ 0x000C, "Contrast"},
{ 0x000D, "Saturation"},
{ 0x0014, "CCDSensitivity"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_FUJI = {
{ 0x0000, "Version"},
{ 0x1000, "Quality"},
{ 0x1001, "Sharpness"},
{ 0x1002, "WhiteBalance"},
{ 0x1003, "Color"},
{ 0x1004, "Tone"},
{ 0x1010, "FlashMode"},
{ 0x1011, "FlashStrength"},
{ 0x1020, "Macro"},
{ 0x1021, "FocusMode"},
{ 0x1030, "SlowSync"},
{ 0x1031, "PictureMode"},
{ 0x1100, "ContTake"},
{ 0x1300, "BlurWarning"},
{ 0x1301, "FocusWarning"},
{ 0x1302, "AEWarning "},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_NIKON = {
{ 0x0003, "Quality"},
{ 0x0004, "ColorMode"},
{ 0x0005, "ImageAdjustment"},
{ 0x0006, "CCDSensitivity"},
{ 0x0007, "WhiteBalance"},
{ 0x0008, "Focus"},
{ 0x000a, "DigitalZoom"},
{ 0x000b, "Converter"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_NIKON_990 = {
{ 0x0001, "Version"},
{ 0x0002, "ISOSetting"},
{ 0x0003, "ColorMode"},
{ 0x0004, "Quality"},
{ 0x0005, "WhiteBalance"},
{ 0x0006, "ImageSharpening"},
{ 0x0007, "FocusMode"},
{ 0x0008, "FlashSetting"},
{ 0x000F, "ISOSelection"},
{ 0x0080, "ImageAdjustment"},
{ 0x0082, "AuxiliaryLens"},
{ 0x0085, "ManualFocusDistance"},
{ 0x0086, "DigitalZoom"},
{ 0x0088, "AFFocusPosition"},
{ 0x0010, "DataDump"},
TAG_TABLE_END
};
static tag_info_array tag_table_VND_OLYMPUS = {
{ 0x0200, "SpecialMode"},
{ 0x0201, "JPEGQuality"},
{ 0x0202, "Macro"},
{ 0x0204, "DigitalZoom"},
{ 0x0207, "SoftwareRelease"},
{ 0x0208, "PictureInfo"},
{ 0x0209, "CameraId"},
{ 0x0F00, "DataDump"},
TAG_TABLE_END
};
typedef enum mn_byte_order_t {
MN_ORDER_INTEL = 0,
MN_ORDER_MOTOROLA = 1,
MN_ORDER_NORMAL
} mn_byte_order_t;
typedef enum mn_offset_mode_t {
MN_OFFSET_NORMAL,
MN_OFFSET_MAKER,
MN_OFFSET_GUESS
} mn_offset_mode_t;
typedef struct {
tag_table_type tag_table;
char * make;
char * model;
char * id_string;
int id_string_len;
int offset;
mn_byte_order_t byte_order;
mn_offset_mode_t offset_mode;
} maker_note_type;
static const maker_note_type maker_note_array[] = {
{ tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS},
/* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/
{ tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL},
{ tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER},
{ tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
{ tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},
};
/* }}} */
/* {{{ exif_get_tagname
Get headername for tag_num or NULL if not defined */
static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table TSRMLS_DC)