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- Short: TIFF datatype V44.2 (68k,WarpOS,MorphOS)
- Author: oliver@futaura.co.uk (Oliver Roberts)
- Uploader: oliver@futaura.co.uk (Oliver Roberts)
- Version: 44.2
- Type: util/dtype
- Requires: OS 3.0+,picture.datatype v43+
-
- Changes since previous release:
-
- - Now fully supports multi-image TIFF files, allowing applications to
- choose which image to decode, by using the PDTA_GetNumPictures and
- PDTA_WhichPicture tags.
- - Added support for CMYK based images.
- - PixarLog decompression support was broken - fixed.
- - Files with a missing StripByteCounts tag no longer cause crashes.
- - Files that don't declare the number of samples per pixel now load ok.
- - Fixed handling of images with separated colour components.
- - Reworked/improved error handling and error return codes.
- - Removed some redundant code
-
-
- FEATURES
-
- - Supports 5.0 and 6.0 TIFF spec, including Packbits, Thunderscan,
- CCITT (fax), Pixar, LogLuv (CIE and SGILog) and Deflate (zip)
- encodings, and uncompressed files. LZW and JPEG encodings are
- currently unsupported
-
- - Image types supported include RGB (24-bit and 48-bit), palette based
- and greyscale (1-bit, 4-bit, 8-bit and 16-bit)
-
- - Supports image data organized as strips, tiles or separate components
-
- - For multi-image files, applications may choose which picture to decode
-
- - 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 WarpOS and native MorphOS versions
-
- - Alter the pen allocation precision when images are remapped to an
- 8-bit display
-
- - Specific support for the OS 3.5/3.9 picture.datatype, when available
-
- - The dithering feature of the OS 3.5/3.9 picture.datatype can be
- configured to your liking (e.g. disabled for 15/16-bit displays)
-
- - Based on libtiff 3.5.6-beta and zlib 1.1.3
-
-
- 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 3.5/3.9, P96 or CGraphX)
-
- 68k version
-
- - 68020 processor or higher (optimized versions included)
-
- WarpOS version
-
- - PPC accelerator card + 68040/060
- - WarpUp Release 4 (powerpc.library V15) or higher
-
- MorphOS version
-
- - PPC accelerator card
- - MorphOS beta release 1 or higher
-
- Note that a graphics card is not necessary.
-