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WebP image datatype V45.3

   Author:       oliver at futaura.co.uk (Oliver Roberts)
   Uploader:     oliver futaura co uk (Oliver Roberts)
   Type:         util/dtype
   Version:      45.3
   Requires:     OS 3.0+,picture.datatype v43+
   Architecture: m68k-amigaos; ppc-amigaos; ppc-warpup; ppc-morphos
   Date:         2022-10-10
   Readme:       http://aminet.net/util/dtype/WarpWebPdt.readme
   Downloads:    1176

http://aminet.net/util/dtype/WarpWebPdt.lha

Changes since previous Aminet release:

- Updated with libwebp 1.2.4.

- Disabled asynchronous i/o when loading images via OS4 vector-port

filesystems, removing overhead to improve performance (still enabled

for older filesystems such as FFS2 and SFS).

- OS4 version recompiled with GCC 11.2.0.

- MorphOS and WarpOS versions recompiled with VBCC 0.9h.

- Tweaked version string so that CPU information can be viewed with

the version command.

FEATURES

- Handles both lossless WebP and lossy WebP images

- Different modes for handling alpha channels / transparency

- Highly optimized datatype dispatch engine and WebP decoder,

resulting in a very efficient, compact and quick WebP 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 libwebp 1.2.4.

REQUIREMENTS

WarpWebP 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, 3.5, 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, 3.5, 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.

Contents of util/dtype/WarpWebPdt.lha

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                47070   87628  53.7% -lh5- 6b1b Oct  9 13:22 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.020
[unknown]                  126     144  87.5% -lh5- 0016 Oct  9 13:59 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.030.pch
[unknown]                 9690   14328  67.6% -lh5- 2b5e Oct  9 13:59 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.040.pch
[unknown]                15976   24612  64.9% -lh5- 8345 Oct  9 13:59 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.060.pch
[unknown]                69789  151380  46.1% -lh5- 1045 Oct  9 12:37 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.mos
[unknown]                63311  115940  54.6% -lh5- df97 Oct  9 12:37 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.os4
[unknown]                67027  134868  49.7% -lh5- d49e Oct  9 12:37 WarpWebPdt/Classes/Datatypes/WarpWebP.datatype.wos
[unknown]                  124     146  84.9% -lh5- dbaa Oct  9 13:59 WarpWebPdt/Devs/Datatypes/WebP
[unknown]                 1767    2519  70.1% -lh5- 1f25 Jan  3  2000 WarpWebPdt/Devs/Datatypes/WebP.info
[unknown]                 5788   17905  32.3% -lh5- 3fd1 Oct  9 13:30 WarpWebPdt/Install_WarpWebP
[unknown]                 1529    2008  76.1% -lh5- 4928 May 19  2020 WarpWebPdt/Install_WarpWebP.info
[unknown]                 9285   14636  63.4% -lh5- e89d May 16  1996 WarpWebPdt/spatch
[unknown]                 8399   21003  40.0% -lh5- b201 Oct  8 20:17 WarpWebPdt/WarpWebP.guide
[unknown]                 2308    2924  78.9% -lh5- 9746 Dec 15  1999 WarpWebPdt/WarpWebP.guide.info
[unknown]                 2353    3090  76.1% -lh5- b18e May 24  2020 WarpWebPdt.info
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        15 files  304542  593131  51.3%            Oct 11 02:46