The zpb-exif Reference Manual

This is the zpb-exif Reference Manual, version 1.2.4, generated automatically by Declt version 4.0 beta 2 "William Riker" on Mon Aug 15 06:13:57 2022 GMT+0.

1 Introduction

ZPB-EXIF can read EXIF data from image files. It is available under a
BSD-like license.

For documentation, see doc/index.html.

For any questions and comments, please email Zach Beane
.

2 Systems

The main system appears first, followed by any subsystem dependency.

zpb-exif

2.1 `zpb-exif`

Read EXIF data from image files

Author: Zachary Beane <xach@xach.com>
License: BSD
Version: 1.2.4
Source: zpb-exif.asd.
Child Component: exif.lisp (file).

3 Files

Files are sorted by type and then listed depth-first from the systems components trees.

Lisp

3.1.1 `zpb-exif/zpb-exif.asd`

Source: zpb-exif.asd.
Parent Component: zpb-exif (system).
ASDF Systems: zpb-exif.

3.1.2 `zpb-exif/exif.lisp`

Source

zpb-exif.asd.

Parent Component

zpb-exif (system).

Packages

zpb-exif.

Public Interface

entry-value (function).
exif-alist (function).
exif-data (function).
exif-ifd (reader method).
(setf exif-ifd) (writer method).
exif-value (function).
gps-ifd (reader method).
(setf gps-ifd) (writer method).
ifd-alist (function).
ifd-entry (function).
ifd-entry (class).
image-ifd (reader method).
(setf image-ifd) (writer method).
interoperability-ifd (reader method).
(setf interoperability-ifd) (writer method).
invalid-exif-stream (condition).
invalid-jpeg-stream (condition).
invalid-stream (condition).
make-exif (function).
parse-exif-data (function).
parse-exif-octets (function).
parsed-entry-value (function).
parsed-exif-value (function).
print-object (method).
print-object (method).
thumbnail-ifd (reader method).
(setf thumbnail-ifd) (writer method).
thumbnail-image (function).

Internals

%ifd-entry (function).
%value (reader method).
*optimizations* (special variable).
*reader-functions/lsb* (special variable).
*reader-functions/msb* (special variable).
*type-readers* (special variable).
bisect-find (function).
check-bytes (function).
count (reader method).
data (reader method).
define-exif-type (macro).
define-tagset (macro).
do-gets (macro).
endianness (reader method).
entries (reader method).
(setf entries) (writer method).
exif (reader method).
exif (class).
exif-type-parser-fun (function).
file (reader method).
find-ifd-entry (function).
get-16 (function).
get-16-function (reader method).
get-16/lsb (function).
get-16/msb (function).
get-32 (function).
get-32-function (reader method).
get-32/lsb (function).
get-32/msb (function).
get-8 (function).
get-8/* (function).
get-ascii (function).
get-byte (function).
get-long (function).
get-rational (function).
get-short (function).
get-slong (function).
get-srational (function).
get-string (function).
get-undefined (function).
get-unknown-type (function).
ifd (reader method).
ifd (class).
immediate-value-p (function).
initialize-exif-ifds (function).
initialize-ifd-entry (function).
long->slong (function).
make-exif-from-file (function).
make-exif-from-stream (function).
name (reader method).
next-ifd-offset (reader method).
(setf next-ifd-offset) (writer method).
offset (reader method).
parse-datetime (function).
read-ifd (function).
read-ifd-entry (function).
read-ifd-value (function).
read-jpeg-uint16 (function).
seek-to-app1 (function).
tag (reader method).
tag (reader method).
tag-code (function).
tag-designator (function).
tag-name (function).
tag-type (function).
tagset (reader method).
(setf tagset) (writer method).
tagset-entry (class).
type (reader method).
type (reader method).
(setf value) (writer method).
value-offset (reader method).

4 Packages

Packages are listed by definition order.

zpb-exif

4.1 `zpb-exif`

Source

exif.lisp.

Use List

common-lisp.

Public Interface

entry-value (function).
exif-alist (function).
exif-data (function).
exif-ifd (generic reader).
(setf exif-ifd) (generic writer).
exif-value (function).
gps-ifd (generic reader).
(setf gps-ifd) (generic writer).
ifd-alist (function).
ifd-entry (function).
ifd-entry (class).
image-ifd (generic reader).
(setf image-ifd) (generic writer).
interoperability-ifd (generic reader).
(setf interoperability-ifd) (generic writer).
invalid-exif-stream (condition).
invalid-jpeg-stream (condition).
invalid-stream (condition).
make-exif (function).
parse-exif-data (function).
parse-exif-octets (function).
parsed-entry-value (function).
parsed-exif-value (function).
thumbnail-ifd (generic reader).
(setf thumbnail-ifd) (generic writer).
thumbnail-image (function).

Internals

%ifd-entry (function).
%value (generic reader).
*optimizations* (special variable).
*reader-functions/lsb* (special variable).
*reader-functions/msb* (special variable).
*type-readers* (special variable).
bisect-find (function).
check-bytes (function).
count (generic reader).
data (generic reader).
define-exif-type (macro).
define-tagset (macro).
do-gets (macro).
endianness (generic reader).
entries (generic reader).
(setf entries) (generic writer).
exif (generic reader).
exif (class).
exif-type-parser-fun (function).
file (generic reader).
find-ifd-entry (function).
get-16 (function).
get-16-function (generic reader).
get-16/lsb (function).
get-16/msb (function).
get-32 (function).
get-32-function (generic reader).
get-32/lsb (function).
get-32/msb (function).
get-8 (function).
get-8/* (function).
get-ascii (function).
get-byte (function).
get-long (function).
get-rational (function).
get-short (function).
get-slong (function).
get-srational (function).
get-string (function).
get-undefined (function).
get-unknown-type (function).
ifd (generic reader).
ifd (class).
immediate-value-p (function).
initialize-exif-ifds (function).
initialize-ifd-entry (function).
long->slong (function).
make-exif-from-file (function).
make-exif-from-stream (function).
name (generic reader).
next-ifd-offset (generic reader).
(setf next-ifd-offset) (generic writer).
offset (generic reader).
parse-datetime (function).
read-ifd (function).
read-ifd-entry (function).
read-ifd-value (function).
read-jpeg-uint16 (function).
seek-to-app1 (function).
tag (generic reader).
tag-code (function).
tag-designator (function).
tag-name (function).
tag-type (function).
tagset (generic reader).
(setf tagset) (generic writer).
tagset-entry (class).
type (generic reader).
(setf value) (generic writer).
value-offset (generic reader).

5 Definitions

Definitions are sorted by export status, category, package, and then by lexicographic order.

Public Interface
Internals

5.1 Public Interface

Ordinary functions
Generic functions
Standalone methods
Conditions
Classes

5.1.1 Ordinary functions

Function: entry-value (ifd-entry) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: exif-alist (exif &key parsedp) ¶

Return the keys and values from the Image, Exif, and GPS IFDs of EXIF.

Package: zpb-exif.
Source: exif.lisp.

Function: exif-data (exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: exif-value (tag exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: ifd-alist (ifd &key parsedp) ¶

Return all the values in IFD as an alist.

Package: zpb-exif.
Source: exif.lisp.

Function: ifd-entry (tag ifd) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: make-exif (object) ¶

Read and create an exif object from OBJECT, which may be a pathname designator or a stream.

Package: zpb-exif.
Source: exif.lisp.

Function: parse-exif-data (file) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: parse-exif-octets (data &key file offset) ¶

Parse exif data from (unsigned-byte 8) simple-array DATA, storing FILE and OFFSET in resulting Exif object if provided. Data should contain the exif data starting after the "Exif#NUL#NUL" header. If the vector does not contain Exif data, raise INVALID-EXIF-STREAM.

Package: zpb-exif.
Source: exif.lisp.

Function: parsed-entry-value (ifd-entry) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: parsed-exif-value (tag exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: thumbnail-image (exif) ¶

Return an (UNSIGNED-BYTE 8) vector containing the JPEG data for the thumbnail image in EXIF, if present. If there is no thumbnail, return NIL.

Package: zpb-exif.
Source: exif.lisp.

5.1.2 Generic functions

Generic Reader: exif-ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: exif-ifd ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: exif-ifd.

Generic Writer: (setf exif-ifd) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf exif-ifd) ((exif exif)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: exif-ifd.

Generic Reader: gps-ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: gps-ifd ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: gps-ifd.

Generic Writer: (setf gps-ifd) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf gps-ifd) ((exif exif)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: gps-ifd.

Generic Reader: image-ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: image-ifd ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: image-ifd.

Generic Writer: (setf image-ifd) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf image-ifd) ((exif exif)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: image-ifd.

Generic Reader: interoperability-ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: interoperability-ifd ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: interoperability-ifd.

Generic Writer: (setf interoperability-ifd) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf interoperability-ifd) ((exif exif)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: interoperability-ifd.

Generic Reader: thumbnail-ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: thumbnail-ifd ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: thumbnail-ifd.

Generic Writer: (setf thumbnail-ifd) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf thumbnail-ifd) ((exif exif)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: thumbnail-ifd.

5.1.3 Standalone methods

Method: print-object ((ifd-entry ifd-entry) stream) ¶

Source: exif.lisp.

Method: print-object ((ifd ifd) stream) ¶

Source: exif.lisp.

5.1.4 Conditions

Condition: invalid-exif-stream ¶

Package: zpb-exif.
Source: exif.lisp.
Direct superclasses: invalid-stream.

Condition: invalid-jpeg-stream ¶

Package: zpb-exif.
Source: exif.lisp.
Direct superclasses: invalid-stream.

Condition: invalid-stream ¶

Package

zpb-exif.

Source

exif.lisp.

Direct superclasses

error.

Direct subclasses

invalid-exif-stream.
invalid-jpeg-stream.

5.1.5 Classes

Class: ifd-entry ¶

Package

zpb-exif.

Source

exif.lisp.

Direct methods

%value.
count.
exif.
ifd.
print-object.
tag.
type.
(setf value).
value-offset.

Direct slots

Slot: exif ¶

Initargs: :exif
Readers: exif.
Writers: This slot is read-only.

Slot: ifd ¶

Initargs: :ifd
Readers: ifd.
Writers: This slot is read-only.

Slot: tag ¶

Initargs: :tag
Readers: tag.
Writers: This slot is read-only.

Slot: type ¶

Initargs: :type
Readers: type.
Writers: This slot is read-only.

Slot: count ¶

Initargs: :count
Readers: count.
Writers: This slot is read-only.

Slot: value-offset ¶

Initargs: :value-offset
Readers: value-offset.
Writers: This slot is read-only.

Slot: value ¶

Initargs: :value
Readers: %value.
Writers: (setf value).

5.2 Internals

Special variables
Macros
Ordinary functions
Generic functions
Classes

5.2.1 Special variables

Special Variable: *optimizations* ¶

Package: zpb-exif.
Source: exif.lisp.

Special Variable: *reader-functions/lsb* ¶

Package: zpb-exif.
Source: exif.lisp.

Special Variable: *reader-functions/msb* ¶

Package: zpb-exif.
Source: exif.lisp.

Special Variable: *type-readers* ¶

Package: zpb-exif.
Source: exif.lisp.

5.2.2 Macros

Macro: define-exif-type (name (base-type) &rest options) ¶

Package: zpb-exif.
Source: exif.lisp.

Macro: define-tagset (name &body tag-definitions) ¶

Package: zpb-exif.
Source: exif.lisp.

Macro: do-gets ((j start step count) &body body) ¶

Evaluate BODY COUNT times, binding J to START initially, then incrementing it by STEP. The results of the evaluation are returned as a vector.

Package: zpb-exif.
Source: exif.lisp.

5.2.3 Ordinary functions

Function: %ifd-entry (tag ifd) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: bisect-find (object vector &key key) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: check-bytes (stream &rest bytes) ¶

Return true if next bytes of STREAM match the list BYTES.

Package: zpb-exif.
Source: exif.lisp.

Function: exif-type-parser-fun (exif-type) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: find-ifd-entry (tag exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-16 (pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-16/lsb (pos buf) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-16/msb (pos buf) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-32 (pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-32/lsb (pos buf) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-32/msb (pos buf) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-8 (pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-8/* (pos buf) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-ascii (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-byte (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-long (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-rational (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-short (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-slong (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-srational (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-string (pos length exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-undefined (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: get-unknown-type (type &rest args) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: immediate-value-p (type count) ¶

Can COUNT items of TYPE be stored in the 32-bit IFD entry value offset area?

Package: zpb-exif.
Source: exif.lisp.

Function: initialize-exif-ifds (exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: initialize-ifd-entry (ifd-entry) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: long->slong (long) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: make-exif-from-file (file) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: make-exif-from-stream (stream) ¶

Extract an Exif object from the open (unsigned-byte 8) STREAM. The stream must be positioned at the beginning of JPEG data. If the stream is not a JPEG stream, raise INVALID-JPEG-STREAM. If the stream does not contain Exif data, raise INVALID-EXIF-STREAM.

Package: zpb-exif.
Source: exif.lisp.

Function: parse-datetime (string) ¶

Convert an Exif datetime string in the form "YYYY:MM:DD hh:mm:ss" to a universal time.

Package: zpb-exif.
Source: exif.lisp.

Function: read-ifd (pos tagset exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: read-ifd-entry (pos ifd exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: read-ifd-value (type count pos exif) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: read-jpeg-uint16 (stream) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: seek-to-app1 (stream) ¶

Position STREAM after the #xFF, #xE1 marker in the JPEG stream representing the APP1 segment. Raise an INVALID-EXIF-STREAM error if no APP1 segment can be found.

Package: zpb-exif.
Source: exif.lisp.

Function: tag-code (name tagset) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: tag-designator (tag tagset) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: tag-name (code tagset) ¶

Package: zpb-exif.
Source: exif.lisp.

Function: tag-type (code tagset) ¶

Package: zpb-exif.
Source: exif.lisp.

5.2.4 Generic functions

Generic Reader: %value (object) ¶

Package

zpb-exif.

Methods

Reader Method: %value ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: value.

Generic Reader: count (object) ¶

Package

zpb-exif.

Methods

Reader Method: count ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: count.

Generic Reader: data (object) ¶

Package

zpb-exif.

Methods

Reader Method: data ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: data.

Generic Reader: endianness (object) ¶

Package

zpb-exif.

Methods

Reader Method: endianness ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: endianness.

Generic Reader: entries (object) ¶

Package

zpb-exif.

Methods

Reader Method: entries ((ifd ifd)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: entries.

Generic Writer: (setf entries) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf entries) ((ifd ifd)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: entries.

Generic Reader: exif (object) ¶

Package

zpb-exif.

Methods

Reader Method: exif ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: exif.

Generic Reader: file (object) ¶

Package

zpb-exif.

Methods

Reader Method: file ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: file.

Generic Reader: get-16-function (object) ¶

Package

zpb-exif.

Methods

Reader Method: get-16-function ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: get-16-function.

Generic Reader: get-32-function (object) ¶

Package

zpb-exif.

Methods

Reader Method: get-32-function ((exif exif)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: get-32-function.

Generic Reader: ifd (object) ¶

Package

zpb-exif.

Methods

Reader Method: ifd ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: ifd.

Generic Reader: name (object) ¶

Package

zpb-exif.

Methods

Reader Method: name ((tagset-entry tagset-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: name.

Generic Reader: next-ifd-offset (object) ¶

Package

zpb-exif.

Methods

Reader Method: next-ifd-offset ((ifd ifd)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: next-ifd-offset.

Generic Writer: (setf next-ifd-offset) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf next-ifd-offset) ((ifd ifd)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: next-ifd-offset.

Generic Reader: offset (object) ¶

Package

zpb-exif.

Methods

Reader Method: offset ((exif exif)) ¶

The position in the input stream from where the Exif data was read.

Source: exif.lisp.
Target Slot: offset.

Generic Reader: tag (object) ¶

Package

zpb-exif.

Methods

Reader Method: tag ((tagset-entry tagset-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: tag.

Reader Method: tag ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: tag.

Generic Reader: tagset (object) ¶

Package

zpb-exif.

Methods

Reader Method: tagset ((ifd ifd)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: tagset.

Generic Writer: (setf tagset) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf tagset) ((ifd ifd)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: tagset.

Generic Reader: type (object) ¶

Package

zpb-exif.

Methods

Reader Method: type ((tagset-entry tagset-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: type.

Reader Method: type ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: type.

Generic Writer: (setf value) (object) ¶

Package

zpb-exif.

Methods

Writer Method: (setf value) ((ifd-entry ifd-entry)) ¶

automatically generated writer method

Source: exif.lisp.
Target Slot: value.

Generic Reader: value-offset (object) ¶

Package

zpb-exif.

Methods

Reader Method: value-offset ((ifd-entry ifd-entry)) ¶

automatically generated reader method

Source: exif.lisp.
Target Slot: value-offset.

5.2.5 Classes

Class: exif ¶

Package

zpb-exif.

Source

exif.lisp.

Direct methods

data.
endianness.
(setf exif-ifd).
exif-ifd.
file.
get-16-function.
get-32-function.
(setf gps-ifd).
gps-ifd.
(setf image-ifd).
image-ifd.
(setf interoperability-ifd).
interoperability-ifd.
offset.
(setf thumbnail-ifd).
thumbnail-ifd.

Direct slots

Slot: file ¶

Initargs: :file
Readers: file.
Writers: This slot is read-only.

Slot: data ¶

Initargs: :data
Readers: data.
Writers: This slot is read-only.

Slot: offset ¶

The position in the input stream from where the Exif data was read.

Initargs: :offset
Readers: offset.
Writers: This slot is read-only.

Slot: get-32-function ¶

Initargs: :get-32-function
Readers: get-32-function.
Writers: This slot is read-only.

Slot: get-16-function ¶

Initargs: :get-16-function
Readers: get-16-function.
Writers: This slot is read-only.

Slot: endianness ¶

Initargs: :endianness
Readers: endianness.
Writers: This slot is read-only.

Slot: image-ifd ¶

Initargs: :image-ifd
Readers: image-ifd.
Writers: (setf image-ifd).

Slot: thumbnail-ifd ¶

Initargs: :thumbnail-ifd
Readers: thumbnail-ifd.
Writers: (setf thumbnail-ifd).

Slot: exif-ifd ¶

Initargs: :exif-ifd
Readers: exif-ifd.
Writers: (setf exif-ifd).

Slot: gps-ifd ¶

Initargs: :gps-ifd
Readers: gps-ifd.
Writers: (setf gps-ifd).

Slot: interoperability-ifd ¶

Initargs: :interoperability-ifd
Readers: interoperability-ifd.
Writers: (setf interoperability-ifd).

Class: ifd ¶

Package

zpb-exif.

Source

exif.lisp.

Direct methods

(setf entries).
entries.
(setf next-ifd-offset).
next-ifd-offset.
print-object.
(setf tagset).
tagset.

Direct slots

Slot: tagset ¶

Initargs: :tagset
Readers: tagset.
Writers: (setf tagset).

Slot: entries ¶

Initargs: :entries
Readers: entries.
Writers: (setf entries).

Slot: next-ifd-offset ¶

Initform: 0
Initargs: :next-ifd-offset
Readers: next-ifd-offset.
Writers: (setf next-ifd-offset).

Class: tagset-entry ¶

Package

zpb-exif.

Source

exif.lisp.

Direct methods

name.
tag.
type.

Direct slots

Slot: tag ¶

Initargs: :tag
Readers: tag.
Writers: This slot is read-only.

Slot: name ¶

Initargs: :name
Readers: name.
Writers: This slot is read-only.

Slot: type ¶

Initargs: :type
Readers: type.
Writers: This slot is read-only.

Appendix A Indexes

Concepts
Functions
Variables
Data types

A.1 Concepts

A.2 Functions

Jump to:	% ( B C D E F G I L M N O P R S T V

	Index Entry	Section

%
	`%ifd-entry`:	Private ordinary functions
	`%value`:	Private generic functions
	`%value`:	Private generic functions

(
	`(setf entries)`:	Private generic functions
	`(setf entries)`:	Private generic functions
	`(setf exif-ifd)`:	Public generic functions
	`(setf exif-ifd)`:	Public generic functions
	`(setf gps-ifd)`:	Public generic functions
	`(setf gps-ifd)`:	Public generic functions
	`(setf image-ifd)`:	Public generic functions
	`(setf image-ifd)`:	Public generic functions
	`(setf interoperability-ifd)`:	Public generic functions
	`(setf interoperability-ifd)`:	Public generic functions
	`(setf next-ifd-offset)`:	Private generic functions
	`(setf next-ifd-offset)`:	Private generic functions
	`(setf tagset)`:	Private generic functions
	`(setf tagset)`:	Private generic functions
	`(setf thumbnail-ifd)`:	Public generic functions
	`(setf thumbnail-ifd)`:	Public generic functions
	`(setf value)`:	Private generic functions
	`(setf value)`:	Private generic functions

B
	`bisect-find`:	Private ordinary functions

C
	`check-bytes`:	Private ordinary functions
	`count`:	Private generic functions
	`count`:	Private generic functions

D
	`data`:	Private generic functions
	`data`:	Private generic functions
	`define-exif-type`:	Private macros
	`define-tagset`:	Private macros
	`do-gets`:	Private macros

E
	`endianness`:	Private generic functions
	`endianness`:	Private generic functions
	`entries`:	Private generic functions
	`entries`:	Private generic functions
	`entry-value`:	Public ordinary functions
	`exif`:	Private generic functions
	`exif`:	Private generic functions
	`exif-alist`:	Public ordinary functions
	`exif-data`:	Public ordinary functions
	`exif-ifd`:	Public generic functions
	`exif-ifd`:	Public generic functions
	`exif-type-parser-fun`:	Private ordinary functions
	`exif-value`:	Public ordinary functions

F
	`file`:	Private generic functions
	`file`:	Private generic functions
	`find-ifd-entry`:	Private ordinary functions
	`Function, %ifd-entry`:	Private ordinary functions
	`Function, bisect-find`:	Private ordinary functions
	`Function, check-bytes`:	Private ordinary functions
	`Function, entry-value`:	Public ordinary functions
	`Function, exif-alist`:	Public ordinary functions
	`Function, exif-data`:	Public ordinary functions
	`Function, exif-type-parser-fun`:	Private ordinary functions
	`Function, exif-value`:	Public ordinary functions
	`Function, find-ifd-entry`:	Private ordinary functions
	`Function, get-16`:	Private ordinary functions
	`Function, get-16/lsb`:	Private ordinary functions
	`Function, get-16/msb`:	Private ordinary functions
	`Function, get-32`:	Private ordinary functions
	`Function, get-32/lsb`:	Private ordinary functions
	`Function, get-32/msb`:	Private ordinary functions
	`Function, get-8`:	Private ordinary functions
	`Function, get-8/*`:	Private ordinary functions
	`Function, get-ascii`:	Private ordinary functions
	`Function, get-byte`:	Private ordinary functions
	`Function, get-long`:	Private ordinary functions
	`Function, get-rational`:	Private ordinary functions
	`Function, get-short`:	Private ordinary functions
	`Function, get-slong`:	Private ordinary functions
	`Function, get-srational`:	Private ordinary functions
	`Function, get-string`:	Private ordinary functions
	`Function, get-undefined`:	Private ordinary functions
	`Function, get-unknown-type`:	Private ordinary functions
	`Function, ifd-alist`:	Public ordinary functions
	`Function, ifd-entry`:	Public ordinary functions
	`Function, immediate-value-p`:	Private ordinary functions
	`Function, initialize-exif-ifds`:	Private ordinary functions
	`Function, initialize-ifd-entry`:	Private ordinary functions
	`Function, long->slong`:	Private ordinary functions
	`Function, make-exif`:	Public ordinary functions
	`Function, make-exif-from-file`:	Private ordinary functions
	`Function, make-exif-from-stream`:	Private ordinary functions
	`Function, parse-datetime`:	Private ordinary functions
	`Function, parse-exif-data`:	Public ordinary functions
	`Function, parse-exif-octets`:	Public ordinary functions
	`Function, parsed-entry-value`:	Public ordinary functions
	`Function, parsed-exif-value`:	Public ordinary functions
	`Function, read-ifd`:	Private ordinary functions
	`Function, read-ifd-entry`:	Private ordinary functions
	`Function, read-ifd-value`:	Private ordinary functions
	`Function, read-jpeg-uint16`:	Private ordinary functions
	`Function, seek-to-app1`:	Private ordinary functions
	`Function, tag-code`:	Private ordinary functions
	`Function, tag-designator`:	Private ordinary functions
	`Function, tag-name`:	Private ordinary functions
	`Function, tag-type`:	Private ordinary functions
	`Function, thumbnail-image`:	Public ordinary functions

G
	`Generic Function, %value`:	Private generic functions
	`Generic Function, (setf entries)`:	Private generic functions
	`Generic Function, (setf exif-ifd)`:	Public generic functions
	`Generic Function, (setf gps-ifd)`:	Public generic functions
	`Generic Function, (setf image-ifd)`:	Public generic functions
	`Generic Function, (setf interoperability-ifd)`:	Public generic functions
	`Generic Function, (setf next-ifd-offset)`:	Private generic functions
	`Generic Function, (setf tagset)`:	Private generic functions
	`Generic Function, (setf thumbnail-ifd)`:	Public generic functions
	`Generic Function, (setf value)`:	Private generic functions
	`Generic Function, count`:	Private generic functions
	`Generic Function, data`:	Private generic functions
	`Generic Function, endianness`:	Private generic functions
	`Generic Function, entries`:	Private generic functions
	`Generic Function, exif`:	Private generic functions
	`Generic Function, exif-ifd`:	Public generic functions
	`Generic Function, file`:	Private generic functions
	`Generic Function, get-16-function`:	Private generic functions
	`Generic Function, get-32-function`:	Private generic functions
	`Generic Function, gps-ifd`:	Public generic functions
	`Generic Function, ifd`:	Private generic functions
	`Generic Function, image-ifd`:	Public generic functions
	`Generic Function, interoperability-ifd`:	Public generic functions
	`Generic Function, name`:	Private generic functions
	`Generic Function, next-ifd-offset`:	Private generic functions
	`Generic Function, offset`:	Private generic functions
	`Generic Function, tag`:	Private generic functions
	`Generic Function, tagset`:	Private generic functions
	`Generic Function, thumbnail-ifd`:	Public generic functions
	`Generic Function, type`:	Private generic functions
	`Generic Function, value-offset`:	Private generic functions
	`get-16`:	Private ordinary functions
	`get-16-function`:	Private generic functions
	`get-16-function`:	Private generic functions
	`get-16/lsb`:	Private ordinary functions
	`get-16/msb`:	Private ordinary functions
	`get-32`:	Private ordinary functions
	`get-32-function`:	Private generic functions
	`get-32-function`:	Private generic functions
	`get-32/lsb`:	Private ordinary functions
	`get-32/msb`:	Private ordinary functions
	`get-8`:	Private ordinary functions
	`get-8/*`:	Private ordinary functions
	`get-ascii`:	Private ordinary functions
	`get-byte`:	Private ordinary functions
	`get-long`:	Private ordinary functions
	`get-rational`:	Private ordinary functions
	`get-short`:	Private ordinary functions
	`get-slong`:	Private ordinary functions
	`get-srational`:	Private ordinary functions
	`get-string`:	Private ordinary functions
	`get-undefined`:	Private ordinary functions
	`get-unknown-type`:	Private ordinary functions
	`gps-ifd`:	Public generic functions
	`gps-ifd`:	Public generic functions

I
	`ifd`:	Private generic functions
	`ifd`:	Private generic functions
	`ifd-alist`:	Public ordinary functions
	`ifd-entry`:	Public ordinary functions
	`image-ifd`:	Public generic functions
	`image-ifd`:	Public generic functions
	`immediate-value-p`:	Private ordinary functions
	`initialize-exif-ifds`:	Private ordinary functions
	`initialize-ifd-entry`:	Private ordinary functions
	`interoperability-ifd`:	Public generic functions
	`interoperability-ifd`:	Public generic functions

L
	`long->slong`:	Private ordinary functions

M
	`Macro, define-exif-type`:	Private macros
	`Macro, define-tagset`:	Private macros
	`Macro, do-gets`:	Private macros
	`make-exif`:	Public ordinary functions
	`make-exif-from-file`:	Private ordinary functions
	`make-exif-from-stream`:	Private ordinary functions
	`Method, %value`:	Private generic functions
	`Method, (setf entries)`:	Private generic functions
	`Method, (setf exif-ifd)`:	Public generic functions
	`Method, (setf gps-ifd)`:	Public generic functions
	`Method, (setf image-ifd)`:	Public generic functions
	`Method, (setf interoperability-ifd)`:	Public generic functions
	`Method, (setf next-ifd-offset)`:	Private generic functions
	`Method, (setf tagset)`:	Private generic functions
	`Method, (setf thumbnail-ifd)`:	Public generic functions
	`Method, (setf value)`:	Private generic functions
	`Method, count`:	Private generic functions
	`Method, data`:	Private generic functions
	`Method, endianness`:	Private generic functions
	`Method, entries`:	Private generic functions
	`Method, exif`:	Private generic functions
	`Method, exif-ifd`:	Public generic functions
	`Method, file`:	Private generic functions
	`Method, get-16-function`:	Private generic functions
	`Method, get-32-function`:	Private generic functions
	`Method, gps-ifd`:	Public generic functions
	`Method, ifd`:	Private generic functions
	`Method, image-ifd`:	Public generic functions
	`Method, interoperability-ifd`:	Public generic functions
	`Method, name`:	Private generic functions
	`Method, next-ifd-offset`:	Private generic functions
	`Method, offset`:	Private generic functions
	`Method, print-object`:	Public standalone methods
	`Method, print-object`:	Public standalone methods
	`Method, tag`:	Private generic functions
	`Method, tag`:	Private generic functions
	`Method, tagset`:	Private generic functions
	`Method, thumbnail-ifd`:	Public generic functions
	`Method, type`:	Private generic functions
	`Method, type`:	Private generic functions
	`Method, value-offset`:	Private generic functions

N
	`name`:	Private generic functions
	`name`:	Private generic functions
	`next-ifd-offset`:	Private generic functions
	`next-ifd-offset`:	Private generic functions

O
	`offset`:	Private generic functions
	`offset`:	Private generic functions

P
	`parse-datetime`:	Private ordinary functions
	`parse-exif-data`:	Public ordinary functions
	`parse-exif-octets`:	Public ordinary functions
	`parsed-entry-value`:	Public ordinary functions
	`parsed-exif-value`:	Public ordinary functions
	`print-object`:	Public standalone methods
	`print-object`:	Public standalone methods

R
	`read-ifd`:	Private ordinary functions
	`read-ifd-entry`:	Private ordinary functions
	`read-ifd-value`:	Private ordinary functions
	`read-jpeg-uint16`:	Private ordinary functions

S
	`seek-to-app1`:	Private ordinary functions

T
	`tag`:	Private generic functions
	`tag`:	Private generic functions
	`tag`:	Private generic functions
	`tag-code`:	Private ordinary functions
	`tag-designator`:	Private ordinary functions
	`tag-name`:	Private ordinary functions
	`tag-type`:	Private ordinary functions
	`tagset`:	Private generic functions
	`tagset`:	Private generic functions
	`thumbnail-ifd`:	Public generic functions
	`thumbnail-ifd`:	Public generic functions
	`thumbnail-image`:	Public ordinary functions
	`type`:	Private generic functions
	`type`:	Private generic functions
	`type`:	Private generic functions

V
	`value-offset`:	Private generic functions
	`value-offset`:	Private generic functions

Jump to:	% ( B C D E F G I L M N O P R S T V

A.3 Variables

Jump to:	* C D E F G I N O S T V

	Index Entry	Section

*
	`optimizations`:	Private special variables
	`reader-functions/lsb`:	Private special variables
	`reader-functions/msb`:	Private special variables
	`type-readers`:	Private special variables

C
	`count`:	Public classes

D
	`data`:	Private classes

E
	`endianness`:	Private classes
	`entries`:	Private classes
	`exif`:	Public classes
	`exif-ifd`:	Private classes

F
	`file`:	Private classes

G
	`get-16-function`:	Private classes
	`get-32-function`:	Private classes
	`gps-ifd`:	Private classes

I
	`ifd`:	Public classes
	`image-ifd`:	Private classes
	`interoperability-ifd`:	Private classes

N
	`name`:	Private classes
	`next-ifd-offset`:	Private classes

O
	`offset`:	Private classes

S
	`Slot, count`:	Public classes
	`Slot, data`:	Private classes
	`Slot, endianness`:	Private classes
	`Slot, entries`:	Private classes
	`Slot, exif`:	Public classes
	`Slot, exif-ifd`:	Private classes
	`Slot, file`:	Private classes
	`Slot, get-16-function`:	Private classes
	`Slot, get-32-function`:	Private classes
	`Slot, gps-ifd`:	Private classes
	`Slot, ifd`:	Public classes
	`Slot, image-ifd`:	Private classes
	`Slot, interoperability-ifd`:	Private classes
	`Slot, name`:	Private classes
	`Slot, next-ifd-offset`:	Private classes
	`Slot, offset`:	Private classes
	`Slot, tag`:	Public classes
	`Slot, tag`:	Private classes
	`Slot, tagset`:	Private classes
	`Slot, thumbnail-ifd`:	Private classes
	`Slot, type`:	Public classes
	`Slot, type`:	Private classes
	`Slot, value`:	Public classes
	`Slot, value-offset`:	Public classes
	`Special Variable, optimizations`:	Private special variables
	`Special Variable, reader-functions/lsb`:	Private special variables
	`Special Variable, reader-functions/msb`:	Private special variables
	`Special Variable, type-readers`:	Private special variables

T
	`tag`:	Public classes
	`tag`:	Private classes
	`tagset`:	Private classes
	`thumbnail-ifd`:	Private classes
	`type`:	Public classes
	`type`:	Private classes

V
	`value`:	Public classes
	`value-offset`:	Public classes

Jump to:	* C D E F G I N O S T V

A.4 Data types

Jump to:	C E F I P S T Z

	Index Entry	Section

C
	`Class, exif`:	Private classes
	`Class, ifd`:	Private classes
	`Class, ifd-entry`:	Public classes
	`Class, tagset-entry`:	Private classes
	`Condition, invalid-exif-stream`:	Public conditions
	`Condition, invalid-jpeg-stream`:	Public conditions
	`Condition, invalid-stream`:	Public conditions

E
	`exif`:	Private classes
	`exif.lisp`:	The zpb-exif/exif․lisp file

F
	`File, exif.lisp`:	The zpb-exif/exif․lisp file
	`File, zpb-exif.asd`:	The zpb-exif/zpb-exif․asd file

I
	`ifd`:	Private classes
	`ifd-entry`:	Public classes
	`invalid-exif-stream`:	Public conditions
	`invalid-jpeg-stream`:	Public conditions
	`invalid-stream`:	Public conditions

P
	`Package, zpb-exif`:	The zpb-exif package

S
	`System, zpb-exif`:	The zpb-exif system

T
	`tagset-entry`:	Private classes

Z
	`zpb-exif`:	The zpb-exif system
	`zpb-exif`:	The zpb-exif package
	`zpb-exif.asd`:	The zpb-exif/zpb-exif․asd file

Jump to:	C E F I P S T Z

The zpb-exif Reference Manual

The zpb-exif Reference Manual

Table of Contents

1 Introduction

2 Systems

2.1 zpb-exif

3 Files

3.1 Lisp

3.1.1 zpb-exif/zpb-exif.asd

3.1.2 zpb-exif/exif.lisp

4 Packages

4.1 zpb-exif

5 Definitions

5.1 Public Interface

5.1.1 Ordinary functions

5.1.2 Generic functions

5.1.3 Standalone methods

5.1.4 Conditions

5.1.5 Classes

5.2 Internals

5.2.1 Special variables

5.2.2 Macros

5.2.3 Ordinary functions

5.2.4 Generic functions

5.2.5 Classes

Appendix A Indexes

A.1 Concepts

A.2 Functions

A.3 Variables

A.4 Data types

2.1 `zpb-exif`

3.1.1 `zpb-exif/zpb-exif.asd`

3.1.2 `zpb-exif/exif.lisp`

4.1 `zpb-exif`