The zpng Reference Manual

Table of Contents

The zpng Reference Manual

This is the zpng Reference Manual, version 1.2.2, generated automatically by Declt version 3.0 "Montgomery Scott" on Sun May 15 06:30:25 2022 GMT+0.

1 Introduction

zpng is a Common Lisp library for writing PNG files. It uses the
salza2 library for ZLIB compression.

It is available under a BSD-style license.

For documentation, see the doc/ subdirectory.

For any questions or comments, please email Zach Beane
.

2 Systems

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

2.1 zpng

License

BSD

Description

Create PNG files

Version

1.2.2

Dependency

salza2

Source

zpng.asd (file)

Components

• package.lisp (file)
• specials.lisp (file)
• utils.lisp (file)
• chunk.lisp (file)
• conditions.lisp (file)
• png.lisp (file)

3 Files

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

3.1 Lisp

3.1.1 zpng.asd

Location

zpng.asd

Systems

zpng (system)

3.1.2 zpng/package.lisp

Parent

zpng (system)

Location

package.lisp

Packages

zpng

3.1.3 zpng/specials.lisp

Dependency

package.lisp (file)

Parent

zpng (system)

Location

specials.lisp

Internal Definitions

• *color-types* (special variable)
• *png-signature* (special variable)
• +png-compression-method+ (constant)
• +png-filtering+ (constant)
• +png-interlace+ (constant)

3.1.4 zpng/utils.lisp

Dependency

package.lisp (file)

Parent

zpng (system)

Location

utils.lisp

Internal Definitions

• checksum (function)
• write-uint32 (function)

3.1.5 zpng/chunk.lisp

Dependency

utils.lisp (file)

Parent

zpng (system)

Location

chunk.lisp

Internal Definitions

• buffer (method)
• chunk (class)
• chunk-write-byte (function)
• chunk-write-uint32 (function)
• make-chunk (function)
• pos (method)
• (setf pos) (method)
• write-chunk (function)

3.1.6 zpng/conditions.lisp

Dependency

package.lisp (file)

Parent

zpng (system)

Location

conditions.lisp

Exported Definitions

• color-type-mismatch (condition)
• incomplete-row (condition)
• insufficient-rows (condition)
• invalid-row-length (condition)
• invalid-size (condition)
• invalid-size-height (method)
• invalid-size-width (method)
• too-many-rows (condition)
• zpng-error (condition)

Internal Definitions

• color-type-mismatch-expected (method)
• (setf color-type-mismatch-expected) (method)
• color-type-mismatch-given (method)
• (setf color-type-mismatch-given) (method)
• incomplete-row-needed (method)
• (setf incomplete-row-needed) (method)
• incomplete-row-written (method)
• (setf incomplete-row-written) (method)
• insufficient-rows-needed (method)
• (setf insufficient-rows-needed) (method)
• insufficient-rows-written (method)
• (setf insufficient-rows-written) (method)
• invalid-row-length-actual-length (method)
• (setf invalid-row-length-actual-length) (method)
• invalid-row-length-expected-length (method)
• (setf invalid-row-length-expected-length) (method)
• too-many-rows-count (method)
• (setf too-many-rows-count) (method)

3.1.7 zpng/png.lisp

Dependencies

• specials.lisp (file)
• chunk.lisp (file)
• conditions.lisp (file)
• utils.lisp (file)

Parent

zpng (system)

Location

png.lisp

Exported Definitions

• color-type (method)
• copy-png (generic function)
• copy-png (method)
• data-array (method)
• finish-png (generic function)
• finish-png (method)
• finish-png (method)
• height (method)
• image-data (method)
• pixel-streamed-png (class)
• pixels-left-in-row (generic function)
• pixels-left-in-row (method)
• png (class)
• png= (generic function)
• png= (method)
• row-data (method)
• (setf row-data) (method)
• rows-left (generic function)
• rows-left (method)
• rows-written (method)
• (setf rows-written) (method)
• rowstride (generic function)
• rowstride (method)
• samples-per-pixel (generic function)
• samples-per-pixel (method)
• start-png (generic function)
• start-png (method)
• start-png (method)
• streamed-png (class)
• width (method)
• write-pixel (generic function)
• write-pixel (method)
• write-png (generic function)
• write-png (method)
• write-png-stream (generic function)
• write-png-stream (method)
• write-row (generic function)
• write-row (method)

Internal Definitions

• (setf %data-array) (method)
• (setf %image-data) (method)
• base-png (class)
• bpp (method)
• check-size (function)
• compressor (method)
• (setf compressor) (method)
• current-offset (method)
• (setf current-offset) (method)
• ihdr-color-type (generic function)
• ihdr-color-type (method)
• make-idat-callback (function)
• output-stream (method)
• (setf output-stream) (method)
• reset-streamed-png (generic function)
• reset-streamed-png (method)
• reset-streamed-png (method)
• scanline-offset (generic function)
• scanline-offset (method)
• write-idat (generic function)
• write-idat (method)
• write-iend (generic function)
• write-iend (method)
• write-ihdr (generic function)
• write-ihdr (method)
• write-png-header (generic function)
• write-png-header (method)

4 Packages

Packages are listed by definition order.

4.1 zpng

Source

package.lisp (file)

Use List

• salza2
• common-lisp

Exported Definitions

• color-type (generic function)
• color-type (method)
• color-type-mismatch (condition)
• copy-png (generic function)
• copy-png (method)
• data-array (generic function)
• data-array (method)
• finish-png (generic function)
• finish-png (method)
• finish-png (method)
• height (generic function)
• height (method)
• image-data (generic function)
• image-data (method)
• incomplete-row (condition)
• insufficient-rows (condition)
• invalid-row-length (condition)
• invalid-size (condition)
• invalid-size-height (generic function)
• invalid-size-height (method)
• invalid-size-width (generic function)
• invalid-size-width (method)
• pixel-streamed-png (class)
• pixels-left-in-row (generic function)
• pixels-left-in-row (method)
• png (class)
• png= (generic function)
• png= (method)
• row-data (generic function)
• row-data (method)
• (setf row-data) (method)
• (setf row-data) (generic function)
• rows-left (generic function)
• rows-left (method)
• rows-written (generic function)
• rows-written (method)
• (setf rows-written) (method)
• (setf rows-written) (generic function)
• rowstride (generic function)
• rowstride (method)
• samples-per-pixel (generic function)
• samples-per-pixel (method)
• start-png (generic function)
• start-png (method)
• start-png (method)
• streamed-png (class)
• too-many-rows (condition)
• width (generic function)
• width (method)
• write-pixel (generic function)
• write-pixel (method)
• write-png (generic function)
• write-png (method)
• write-png-stream (generic function)
• write-png-stream (method)
• write-row (generic function)
• write-row (method)
• zpng-error (condition)

Internal Definitions

• (setf %data-array) (generic function)
• (setf %data-array) (method)
• (setf %image-data) (generic function)
• (setf %image-data) (method)
• *color-types* (special variable)
• *png-signature* (special variable)
• +png-compression-method+ (constant)
• +png-filtering+ (constant)
• +png-interlace+ (constant)
• base-png (class)
• bpp (generic function)
• bpp (method)
• buffer (generic function)
• buffer (method)
• check-size (function)
• checksum (function)
• chunk (class)
• chunk-write-byte (function)
• chunk-write-uint32 (function)
• color-type-mismatch-expected (generic function)
• color-type-mismatch-expected (method)
• (setf color-type-mismatch-expected) (method)
• (setf color-type-mismatch-expected) (generic function)
• color-type-mismatch-given (generic function)
• color-type-mismatch-given (method)
• (setf color-type-mismatch-given) (method)
• (setf color-type-mismatch-given) (generic function)
• compressor (generic function)
• compressor (method)
• (setf compressor) (method)
• (setf compressor) (generic function)
• current-offset (generic function)
• current-offset (method)
• (setf current-offset) (method)
• (setf current-offset) (generic function)
• ihdr-color-type (generic function)
• ihdr-color-type (method)
• incomplete-row-needed (generic function)
• incomplete-row-needed (method)
• (setf incomplete-row-needed) (method)
• (setf incomplete-row-needed) (generic function)
• incomplete-row-written (generic function)
• incomplete-row-written (method)
• (setf incomplete-row-written) (method)
• (setf incomplete-row-written) (generic function)
• insufficient-rows-needed (generic function)
• insufficient-rows-needed (method)
• (setf insufficient-rows-needed) (method)
• (setf insufficient-rows-needed) (generic function)
• insufficient-rows-written (generic function)
• insufficient-rows-written (method)
• (setf insufficient-rows-written) (method)
• (setf insufficient-rows-written) (generic function)
• invalid-row-length-actual-length (generic function)
• invalid-row-length-actual-length (method)
• (setf invalid-row-length-actual-length) (method)
• (setf invalid-row-length-actual-length) (generic function)
• invalid-row-length-expected-length (generic function)
• invalid-row-length-expected-length (method)
• (setf invalid-row-length-expected-length) (method)
• (setf invalid-row-length-expected-length) (generic function)
• make-chunk (function)
• make-idat-callback (function)
• output-stream (generic function)
• output-stream (method)
• (setf output-stream) (method)
• (setf output-stream) (generic function)
• pos (generic function)
• pos (method)
• (setf pos) (method)
• (setf pos) (generic function)
• reset-streamed-png (generic function)
• reset-streamed-png (method)
• reset-streamed-png (method)
• scanline-offset (generic function)
• scanline-offset (method)
• too-many-rows-count (generic function)
• too-many-rows-count (method)
• (setf too-many-rows-count) (method)
• (setf too-many-rows-count) (generic function)
• write-chunk (function)
• write-idat (generic function)
• write-idat (method)
• write-iend (generic function)
• write-iend (method)
• write-ihdr (generic function)
• write-ihdr (method)
• write-png-header (generic function)
• write-png-header (method)
• write-uint32 (function)

5 Definitions

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

5.1 Exported definitions

5.1.1 Generic functions

Generic Function: color-type OBJECT

Package

zpng

Methods

Method: color-type (BASE-PNG base-png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: copy-png PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: copy-png ORIG

Generic Function: data-array OBJECT

Package

zpng

Methods

Method: data-array (PNG png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: finish-png PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: finish-png (PNG pixel-streamed-png)

Method: finish-png (PNG streamed-png)

Generic Function: height OBJECT

Package

zpng

Methods

Method: height (BASE-PNG base-png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: image-data OBJECT

Package

zpng

Methods

Method: image-data (PNG png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: invalid-size-height CONDITION

Package

zpng

Methods

Method: invalid-size-height (CONDITION invalid-size)

Source

conditions.lisp (file)

Generic Function: invalid-size-width CONDITION

Package

zpng

Methods

Method: invalid-size-width (CONDITION invalid-size)

Source

conditions.lisp (file)

Generic Function: pixels-left-in-row PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: pixels-left-in-row (PNG pixel-streamed-png)

Generic Function: png= PNG1 PNG2

Package

zpng

Source

png.lisp (file)

Methods

Method: png= PNG1 PNG2

Generic Function: row-data OBJECT

Generic Function: (setf row-data) NEW-VALUE OBJECT

Package

zpng

Methods

Method: row-data (STREAMED-PNG streamed-png)

automatically generated reader method

Source

png.lisp (file)

Method: (setf row-data) NEW-VALUE (STREAMED-PNG streamed-png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: rows-left PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: rows-left (PNG streamed-png)

Generic Function: rows-written OBJECT

Generic Function: (setf rows-written) NEW-VALUE OBJECT

Package

zpng

Methods

Method: rows-written (STREAMED-PNG streamed-png)

automatically generated reader method

Source

png.lisp (file)

Method: (setf rows-written) NEW-VALUE (STREAMED-PNG streamed-png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: rowstride PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: rowstride PNG

Generic Function: samples-per-pixel PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: samples-per-pixel PNG

Generic Function: start-png PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: start-png (PNG pixel-streamed-png) STREAM

Method: start-png (PNG streamed-png) STREAM

Generic Function: width OBJECT

Package

zpng

Methods

Method: width (BASE-PNG base-png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: write-pixel PIXEL PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: write-pixel PIXEL (PNG pixel-streamed-png)

Generic Function: write-png PNG PATHNAME &key IF-EXISTS

Package

zpng

Source

png.lisp (file)

Methods

Method: write-png PNG FILE &key IF-EXISTS

Generic Function: write-png-stream PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: write-png-stream PNG STREAM

Generic Function: write-row ROW PNG &key START END

Package

zpng

Source

png.lisp (file)

Methods

Method: write-row ROW (PNG streamed-png) &key START END

5.1.2 Conditions

Condition: color-type-mismatch ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• color-type-mismatch-expected (method)
• color-type-mismatch-expected (method)
• color-type-mismatch-given (method)
• color-type-mismatch-given (method)

Direct slots

Slot: given

Initargs

:given

Readers

color-type-mismatch-given (generic function)

Writers

(setf color-type-mismatch-given) (generic function)

Slot: expected

Initargs

:expected

Readers

color-type-mismatch-expected (generic function)

Writers

(setf color-type-mismatch-expected) (generic function)

Condition: incomplete-row ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• incomplete-row-needed (method)
• incomplete-row-needed (method)
• incomplete-row-written (method)
• incomplete-row-written (method)

Direct slots

Slot: written

Initargs

:written

Readers

incomplete-row-written (generic function)

Writers

(setf incomplete-row-written) (generic function)

Slot: needed

Initargs

:needed

Readers

incomplete-row-needed (generic function)

Writers

(setf incomplete-row-needed) (generic function)

Condition: insufficient-rows ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• insufficient-rows-needed (method)
• insufficient-rows-needed (method)
• insufficient-rows-written (method)
• insufficient-rows-written (method)

Direct slots

Slot: written

Initargs

:written

Readers

insufficient-rows-written (generic function)

Writers

(setf insufficient-rows-written) (generic function)

Slot: needed

Initargs

:needed

Readers

insufficient-rows-needed (generic function)

Writers

(setf insufficient-rows-needed) (generic function)

Condition: invalid-row-length ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• invalid-row-length-actual-length (method)
• invalid-row-length-actual-length (method)
• invalid-row-length-expected-length (method)
• invalid-row-length-expected-length (method)

Direct slots

Slot: expected-length

Initargs

:expected-length

Readers

invalid-row-length-expected-length (generic function)

Writers

(setf invalid-row-length-expected-length) (generic function)

Slot: actual-length

Initargs

:actual-length

Readers

invalid-row-length-actual-length (generic function)

Writers

(setf invalid-row-length-actual-length) (generic function)

Condition: invalid-size ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• invalid-size-height (method)
• invalid-size-width (method)

Direct slots

Slot: width

Initargs

:width

Readers

invalid-size-width (generic function)

Slot: height

Initargs

:height

Readers

invalid-size-height (generic function)

Condition: too-many-rows ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

zpng-error (condition)

Direct methods

• too-many-rows-count (method)
• too-many-rows-count (method)

Direct slots

Slot: count

Initargs

:count

Readers

too-many-rows-count (generic function)

Writers

(setf too-many-rows-count) (generic function)

Condition: zpng-error ()

Package

zpng

Source

conditions.lisp (file)

Direct superclasses

error (condition)

Direct subclasses

• invalid-size (condition)
• invalid-row-length (condition)
• insufficient-rows (condition)
• incomplete-row (condition)
• too-many-rows (condition)
• color-type-mismatch (condition)

5.1.3 Classes

Class: pixel-streamed-png ()

Package

zpng

Source

png.lisp (file)

Direct superclasses

streamed-png (class)

Direct methods

• pixels-left-in-row (method)
• write-pixel (method)
• finish-png (method)
• reset-streamed-png (method)
• start-png (method)
• current-offset (method)
• current-offset (method)

Direct slots

Slot: current-offset

Initform

0

Readers

current-offset (generic function)

Writers

(setf current-offset) (generic function)

Class: png ()

Package

zpng

Source

png.lisp (file)

Direct superclasses

base-png (class)

Direct methods

• initialize-instance (method)
• slot-unbound (method)
• (setf %data-array) (method)
• data-array (method)
• (setf %image-data) (method)
• image-data (method)

Direct slots

Slot: image-data

Initargs

:image-data

Readers

image-data (generic function)

Writers

(setf %image-data) (generic function)

Slot: data-array

Readers

data-array (generic function)

Writers

(setf %data-array) (generic function)

Class: streamed-png ()

Package

zpng

Source

png.lisp (file)

Direct superclasses

base-png (class)

Direct subclasses

pixel-streamed-png (class)

Direct methods

• rows-left (method)
• finish-png (method)
• reset-streamed-png (method)
• write-row (method)
• start-png (method)
• slot-unbound (method)
• output-stream (method)
• output-stream (method)
• compressor (method)
• compressor (method)
• row-data (method)
• row-data (method)
• rows-written (method)
• rows-written (method)

Direct slots

Slot: rows-written

Initargs

:rows-written

Readers

rows-written (generic function)

Writers

(setf rows-written) (generic function)

Slot: row-data

Initargs

:row-data

Readers

row-data (generic function)

Writers

(setf row-data) (generic function)

Slot: compressor

Initargs

:compressor

Readers

compressor (generic function)

Writers

(setf compressor) (generic function)

Slot: output-stream

Initargs

:output-stream

Readers

output-stream (generic function)

Writers

(setf output-stream) (generic function)

Direct Default Initargs

Initarg	Value
:rows-written	0

5.2 Internal definitions

5.2.1 Constants

Constant: +png-compression-method+

Package

zpng

Source

specials.lisp (file)

Constant: +png-filtering+

Package

zpng

Source

specials.lisp (file)

Constant: +png-interlace+

Package

zpng

Source

specials.lisp (file)

5.2.2 Special variables

Special Variable: *color-types*

Package

zpng

Source

specials.lisp (file)

Special Variable: *png-signature*

Package

zpng

Source

specials.lisp (file)

5.2.3 Functions

Function: check-size PNG

Package

zpng

Source

png.lisp (file)

Function: checksum DATA COUNT

Package

zpng

Source

utils.lisp (file)

Function: chunk-write-byte BYTE CHUNK

Save one byte to CHUNK.

Package

zpng

Source

chunk.lisp (file)

Function: chunk-write-uint32 INTEGER CHUNK

Save INTEGER to CHUNK as four bytes.

Package

zpng

Source

chunk.lisp (file)

Function: make-chunk A B C D SIZE

Make a chunk that uses A, B, C, and D as the signature bytes, with data size SIZE.

Package

zpng

Source

chunk.lisp (file)

Function: make-idat-callback STREAM

Package

zpng

Source

png.lisp (file)

Function: write-chunk CHUNK STREAM

Package

zpng

Source

chunk.lisp (file)

Function: write-uint32 INTEGER STREAM

Package

zpng

Source

utils.lisp (file)

5.2.4 Generic functions

Generic Function: (setf %data-array) NEW-VALUE OBJECT

Package

zpng

Methods

Method: (setf %data-array) NEW-VALUE (PNG png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: (setf %image-data) NEW-VALUE OBJECT

Package

zpng

Methods

Method: (setf %image-data) NEW-VALUE (PNG png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: bpp OBJECT

Package

zpng

Methods

Method: bpp (BASE-PNG base-png)

automatically generated reader method

Source

png.lisp (file)

Generic Function: buffer OBJECT

Package

zpng

Methods

Method: buffer (CHUNK chunk)

automatically generated reader method

Source

chunk.lisp (file)

Generic Function: color-type-mismatch-expected CONDITION

Generic Function: (setf color-type-mismatch-expected) NEW-VALUE CONDITION

Package

zpng

Methods

Method: color-type-mismatch-expected (CONDITION color-type-mismatch)

Method: (setf color-type-mismatch-expected) NEW-VALUE (CONDITION color-type-mismatch)

Source

conditions.lisp (file)

Generic Function: color-type-mismatch-given CONDITION

Generic Function: (setf color-type-mismatch-given) NEW-VALUE CONDITION

Package

zpng

Methods

Method: color-type-mismatch-given (CONDITION color-type-mismatch)

Method: (setf color-type-mismatch-given) NEW-VALUE (CONDITION color-type-mismatch)

Source

conditions.lisp (file)

Generic Function: compressor OBJECT

Generic Function: (setf compressor) NEW-VALUE OBJECT

Package

zpng

Methods

Method: compressor (STREAMED-PNG streamed-png)

automatically generated reader method

Source

png.lisp (file)

Method: (setf compressor) NEW-VALUE (STREAMED-PNG streamed-png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: current-offset OBJECT

Generic Function: (setf current-offset) NEW-VALUE OBJECT

Package

zpng

Methods

Method: current-offset (PIXEL-STREAMED-PNG pixel-streamed-png)

automatically generated reader method

Source

png.lisp (file)

Method: (setf current-offset) NEW-VALUE (PIXEL-STREAMED-PNG pixel-streamed-png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: ihdr-color-type PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: ihdr-color-type PNG

Generic Function: incomplete-row-needed CONDITION

Generic Function: (setf incomplete-row-needed) NEW-VALUE CONDITION

Package

zpng

Methods

Method: incomplete-row-needed (CONDITION incomplete-row)

Method: (setf incomplete-row-needed) NEW-VALUE (CONDITION incomplete-row)

Source

conditions.lisp (file)

Generic Function: incomplete-row-written CONDITION

Generic Function: (setf incomplete-row-written) NEW-VALUE CONDITION

Package

zpng

Methods

Method: incomplete-row-written (CONDITION incomplete-row)

Method: (setf incomplete-row-written) NEW-VALUE (CONDITION incomplete-row)

Source

conditions.lisp (file)

Generic Function: insufficient-rows-needed CONDITION

Generic Function: (setf insufficient-rows-needed) NEW-VALUE CONDITION

Package

zpng

Methods

Method: insufficient-rows-needed (CONDITION insufficient-rows)

Method: (setf insufficient-rows-needed) NEW-VALUE (CONDITION insufficient-rows)

Source

conditions.lisp (file)

Generic Function: insufficient-rows-written CONDITION

Generic Function: (setf insufficient-rows-written) NEW-VALUE CONDITION

Package

zpng

Methods

Method: insufficient-rows-written (CONDITION insufficient-rows)

Method: (setf insufficient-rows-written) NEW-VALUE (CONDITION insufficient-rows)

Source

conditions.lisp (file)

Generic Function: invalid-row-length-actual-length CONDITION

Generic Function: (setf invalid-row-length-actual-length) NEW-VALUE CONDITION

Package

zpng

Methods

Method: invalid-row-length-actual-length (CONDITION invalid-row-length)

Method: (setf invalid-row-length-actual-length) NEW-VALUE (CONDITION invalid-row-length)

Source

conditions.lisp (file)

Generic Function: invalid-row-length-expected-length CONDITION

Generic Function: (setf invalid-row-length-expected-length) NEW-VALUE CONDITION

Package

zpng

Methods

Method: invalid-row-length-expected-length (CONDITION invalid-row-length)

Method: (setf invalid-row-length-expected-length) NEW-VALUE (CONDITION invalid-row-length)

Source

conditions.lisp (file)

Generic Function: output-stream OBJECT

Generic Function: (setf output-stream) NEW-VALUE OBJECT

Package

zpng

Methods

Method: output-stream (STREAMED-PNG streamed-png)

automatically generated reader method

Source

png.lisp (file)

Method: (setf output-stream) NEW-VALUE (STREAMED-PNG streamed-png)

automatically generated writer method

Source

png.lisp (file)

Generic Function: pos OBJECT

Generic Function: (setf pos) NEW-VALUE OBJECT

Package

zpng

Methods

Method: pos (CHUNK chunk)

automatically generated reader method

Source

chunk.lisp (file)

Method: (setf pos) NEW-VALUE (CHUNK chunk)

automatically generated writer method

Source

chunk.lisp (file)

Generic Function: reset-streamed-png PNG

Package

zpng

Source

png.lisp (file)

Methods

Method: reset-streamed-png (PNG pixel-streamed-png)

Method: reset-streamed-png (PNG streamed-png)

Generic Function: scanline-offset PNG SCANLINE

Package

zpng

Source

png.lisp (file)

Methods

Method: scanline-offset PNG SCANLINE

Generic Function: too-many-rows-count CONDITION

Generic Function: (setf too-many-rows-count) NEW-VALUE CONDITION

Package

zpng

Methods

Method: too-many-rows-count (CONDITION too-many-rows)

Method: (setf too-many-rows-count) NEW-VALUE (CONDITION too-many-rows)

Source

conditions.lisp (file)

Generic Function: write-idat PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: write-idat PNG STREAM

Generic Function: write-iend PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: write-iend PNG STREAM

Generic Function: write-ihdr PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: write-ihdr PNG STREAM

Generic Function: write-png-header PNG STREAM

Package

zpng

Source

png.lisp (file)

Methods

Method: write-png-header PNG STREAM

5.2.5 Classes

Class: base-png ()

Package

zpng

Source

png.lisp (file)

Direct superclasses

standard-object (class)

Direct subclasses

• png (class)
• streamed-png (class)

Direct methods

• bpp (method)
• color-type (method)
• height (method)
• width (method)

Direct slots

Slot: width

Initargs

:width

Readers

width (generic function)

Slot: height

Initargs

:height

Readers

height (generic function)

Slot: color-type

Initargs

:color-type

Initform

:truecolor

Readers

color-type (generic function)

Slot: bpp

Initargs

:bpp

Initform

8

Readers

bpp (generic function)

Class: chunk ()

Package

zpng

Source

chunk.lisp (file)

Direct superclasses

standard-object (class)

Direct methods

• pos (method)
• pos (method)
• buffer (method)

Direct slots

Slot: buffer

Initargs

:buffer

Readers

buffer (generic function)

Slot: pos

Initform

4

Readers

pos (generic function)

Writers

(setf pos) (generic function)

Appendix A Indexes

A.1 Concepts

A.2 Functions

A.3 Variables