home *** CD-ROM | disk | FTP | other *** search
- Short: JFIF-JPEG datatype V44.23 (68k,WarpOS,MorphOS)
- Author: oliver@futaura.co.uk (Oliver Roberts)
- Uploader: oliver@futaura.co.uk (Oliver Roberts)
- Version: 44.23
- Type: util/dtype
- Requires: OS 3.0+,picture.datatype v43+
-
- Changes since previous release:
-
- - Added greyscale output mode option.
- - Fixed bug in memory manager, which could have caused crashes under
- certain low memory conditions.
- - Now supports the PDTA_GetNumPictures and PDTA_WhichPicture tags.
- - Discovered a bug in the CyberGraphX picture.datatype, concerning
- error numbers which would have resulted in an unknown error being
- reported by application software if bitmap allocation failed - added
- workaround.
-
-
- FEATURES
-
- - Supports regular JFIF files, and also many JPEG variant formats such
- as Exif, Adobe, Photoshop, Mavi, Windows, JCCK/CMYK colorspace files
- and other less common formats
-
- - Supports both normal and progressive JPEG files
-
- - Full true colour (24-bit) and high quality reduced colour (256 colours
- or less) and greyscale output modes, for graphics cards and native Amiga
- displays respectively
-
- - Highly optimized datatype dispatch engine, and fast JPEG decoder,
- resulting in a very efficient, compact and quick JPEG 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)
-
-
- REQUIREMENTS
-
- WarpJPEG is a JFIF/JPEG 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.
-