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Amiga Plus 2004 #11
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WarpTIFFdt.readme
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2004-09-23
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Short: TIFF datatype V45.5 (68k,OS4,WarpOS,MorphOS)
Author: oliver@futaura.co.uk (Oliver Roberts)
Uploader: oliver@futaura.co.uk (Oliver Roberts)
Version: 45.5
Type: util/dtype
Requires: OS 3.0+,picture.datatype v43+
Changes since previous Aminet release:
- Added native AmigaOS 4 version.
- Enabled LZW decoding support.
- Added support for CIELab colourspace images.
- Improved YCbCr colour conversion support.
- Updated to libtiff 3.6.1.
- Updated to zlib 1.2.1.
- Added Polish installer translation.
FEATURES
- Supports 5.0 and 6.0 TIFF spec, including Packbits, Thunderscan,
CCITT (fax), Pixar, LogLuv (CIE and SGILog), LZW, Deflate (zip) and
JPEG compression schemes (old and new), plus uncompressed files.
- Image types supported include RGB (24-bit and 48-bit), palette based
greyscale (1-bit, 2-bit, 4-bit, 8-bit and 16-bit), CMYK (32-bit and
64-bit) and YCbCr
- Can also handle Xerox image files (XIF), as used by Pagis Pro
- Supports image data organized as strips, tiles or separate components
- For multi-image files, applications may choose which picture to decode
- Scaling options for high resolution fax images
- Highly optimized datatype dispatch engine, and fast TIFF decoder,
resulting in a very efficient, compact and quick TIFF 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 libtiff 3.6.1 and zlib 1.2.1
REQUIREMENTS
WarpTIFF is a TIFF datatype which utilizes and requires the following:
- Kickstart 3.0 or higher
- picture.datatype v43 or higher
(i.e. either of the ones supplied with AmigaOS 3.5+, P96 or CGraphX)
68k version
- 68020 processor or higher (optimized versions included)
WarpOS version
- PPC accelerator card + 68040/060
- WarpUp Release 5.0 or higher
OS4 version
- PPC accelerator card / AmigaOne
- AmigaOS 4.0 pre-release or newer
MorphOS version
- PPC accelerator card / Pegasos
- MorphOS beta release 1 or higher