From: "Artyom V. Poptsov" <poptsov.artyom@gmail.com>
To: Guile Users' Mailing List <guile-user@gnu.org>
Subject: [ANN] Guile-PNG 0.4.1 released
Date: Sat, 06 May 2023 18:31:51 +0300 [thread overview]
Message-ID: <878re1h3x4.fsf@gmail.com> (raw)
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Hello Guilers,
I'm pleased to announce Guile-PNG 0.4.1, Portable Network Graphics
(PNG)[1] library for GNU Guile, implemented in pure scheme:
https://github.com/artyom-poptsov/guile-png/releases/tag/v0.4.1
This release includes several bugfixes and adds an image processing
procedure that converts a PNG image to grayscale colors.
* List of user-visible changes
--8<---------------cut here---------------start------------->8---
* Changes in version 0.4.1 (2023-05-06)
** Bugfix: =png-image-clone= now clones image data
=png-image-clone= now produces full clone of the image data as expected.
** Bugfix: =png-chunk-clone= now clones chunks properly
Now =png-chunk-clone= creates correct copies of pHYs, tIME, tEXt, tEXT and
zTEXt chunks.
** New procedure: =png-image-filter-grayscale=
This procedure allows to convert image to grayscale colors.
--8<---------------cut here---------------end--------------->8---
Happy hacking!
- Artyom
References:
1. https://www.rfc-editor.org/rfc/rfc2083
--
Artyom "avp" Poptsov <poptsov.artyom@gmail.com>
Home page: https://memory-heap.org/~avp/
CADR Hackerspace co-founder: https://cadrspace.ru/
GPG: D0C2 EAC1 3310 822D 98DE B57C E9C5 A2D9 0898 A02F
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