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Description:PNG image datatype V45.22
Developer/Porter:Oliver Roberts
Short: PNG image datatype V45.27
Author: oliver@futaura.co.uk (Oliver Roberts)
Uploader: oliver futaura co uk (Oliver Roberts)
Type: util/dtype
Version: 45.27
Requires: OS 3.0+,picture.datatype v43
Architecture: m68k-amigaos; ppc-amigaos; ppc-morphos; ppc-warpup

Changes since previous Aminet release:

- Updated with libpng 1.6.39 and zlib 1.2.13.


- Supports both normal and interlaced PNG files

- Gamma correction options allow the output image to be changed to
suit your monitor/environment

- Alpha channel handling can be configured to output RGBA bitmaps, or
RGB bitmaps either by combining the alpha information internally
using a configurable background colour or simply stripping it

- Highly optimized datatype dispatch engine, and fast PNG decoder,
resulting in a very efficient, compact and quick PNG datatype

- Asynchronous file i/o and double buffering techniques (WarpOS only),
which speeds up image decoding

- Optimized versions for 68020, 030, 040 and 060

- PowerPC support with native OS4, WarpOS and MorphOS versions

- Alter the pen allocation precision when images are remapped to an
8-bit display

- Specific support for the AmigaOS picture.datatype v44+, when available

- The dithering feature of the AmigaOS picture.datatype v44+ can be
configured to your liking (e.g. disabled for 15/16-bit displays)

- Based on libpng 1.6.39 and zlib 1.2.13


WarpPNG is a PNG datatype which utilizes and requires the following:

68k version

- Kickstart 3.0 or higher
- 68020 processor or higher (optimized versions included)
- picture.datatype v43 or higher
(supplied with AmigaOS 3.1.4, 3.2, 3.5, 3.9, CyberGraphX, P96 or AfA OS)

WarpOS version

- Kickstart 3.0 or higher
- PPC accelerator card + 68040/060
- WarpUp Release 5.0 or higher
- picture.datatype v43 or higher
(supplied with AmigaOS 3.1.4, 3.2, 3.5, 3.9, CyberGraphX, P96 or AfA OS)

OS4 version

- PPC accelerator card / AmigaOne / SAM
- AmigaOS 4.0 or higher

MorphOS version

- PPC accelerator card / Pegasos / Efika
- MorphOS 1.4 or higher

Note that a graphics card is not necessary.

Upload Date:May 19 2023
Size:159 KB
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