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Text File
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1998-03-26
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5KB
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121 lines
Note from current maintainer:
-----------------------------
This is a rather old info sheet that probably doesn't interest anyone now
that Acorn has provided the JFIF decoding routines in RO3.6. Anyway, I keep
it here for historical reasons.
I think that FYEO main interest is the pleasure people have to use it (it can
hold several document at once), not particularly its decoding speed. It also
has a better dithering than the routines in RO3.6 (try them on a 256 color
mode).
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
This file contains the results of speed tests of two test images
on FYEO and its challengers :-) .
Note : I recall that ChangeFSI and SlideShow RiscPC app. use the same JPEG
code (provided in the ChangeFSI application).
******************************
* JPEG *
******************************
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 8 bpp test +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test machine : A4 computer, mode 28, multisync +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test file : GIGSMP51 1280*1024 JFIF file , 425961 bytes . +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- For Your Eyes Only 2.03 , full size image 8bpp , 90x90 dpi , Floyd-Steinberg dithering :
------------------------------------------------------------------------------------------
Process time : 29 secs .
Temporary file : No .
Wimpslot used before process : 288 kb .
Wimpslot used when processing : 1760 Kb .
Wimpslot used image loaded : 1600 kb .
- For Your Eyes Only 2.03 , full size image 8bpp , 90x90 dpi , simple dithering :
---------------------------------------------------------------------------------
Process time : 19 secs .
Temporary file : No .
Wimpslot used before process : 288 kb .
Wimpslot used when processing : 1760 Kb .
Wimpslot used image loaded : 1600 kb .
- For Your Eyes Only 1.02 , full size image 8bpp , 90x90 dpi , Floyd-Steinberg dithering :
------------------------------------------------------------------------------------------
Process time : 50 secs .
Temporary file : No .
Wimpslot used before process : 192 kb .
Wimpslot used when processing : 1728 Kb .
Wimpslot used image loaded : 1504 kb .
- Change FSI 0.95 with no process options :
-------------------------------------------
Process time : 57 secs .
Temporary file : No .
Wimpslot used before process : 320 kb .
Wimpslot used when processing : 2176 Kb .
Wimpslot used image loaded : 2176 kb .
- Translator 7.12 with default settings :
-----------------------------------------
Process time : 89 secs .
Temporary file : 3932177 kb .
Wimpslot used before process : 128 kb .
Wimpslot used when processing : 1472 Kb .
Wimpslot used image loaded : 1440 kb .
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 16 bpp test +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test machine : Risc PC 602 computer +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test file : SA09 768*512 JFIF file , 57105 bytes . +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- Change FSI 0.95 , S16,90,90 output mode with no dithering option :
--------------------------------------------------------------------
Process time : 3.31 secs .
Temporary file : No .
Wimpslot used before process : Not tested .
Wimpslot used when processing : Not tested .
Wimpslot used image loaded : Not tested .
- For Your Eyes Only 2.03 , full size image 16bpp , 90x90 dpi , no dithering :
------------------------------------------------------------------------------
Process time : 3.54 secs .
Temporary file : No .
Wimpslot used before process : Not tested .
Wimpslot used when processing : Not tested .
Wimpslot used image loaded : Not tested .
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ 32 bpp test +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test machine : Risc PC 602 computer +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ Test file : SA09 768*512 JFIF file , 57105 bytes . +
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- Change FSI 0.95 , S32,90,90 output mode :
-------------------------------------------
Process time : 3.33 secs .
Temporary file : No .
Wimpslot used before process : Not tested .
Wimpslot used when processing : Not tested .
Wimpslot used image loaded : Not tested .
- For Your Eyes Only 2.03 , full size image 32bpp , 90x90 dpi :
---------------------------------------------------------------
Process time : 3.58 secs .
Temporary file : No .
Wimpslot used before process : Not tested .
Wimpslot used when processing : Not tested .
Wimpslot used image loaded : Not tested .