Changes between Version 5 and Version 6 of libpipi/oric


Ignore:
Timestamp:
09/29/08 18:25:19 (5 years ago)
Author:
sam
Comment:

remove unnecessary links

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  • libpipi/oric

    v5 v6  
    66The graphical part of the Oric screen has 240×200 pixels and can only display 8 different colours (black, blue, red, green, cyan, magenta, yellow and white). Each horizontal group of 6 pixels can only use two different colours: the foreground and the background colours. The background ''or'' the foreground colour may also be changed (one at a time), but while doing so the next 6 pixels cannot be chosen: they will use the background colour instead. Finally, a special bit may be activated to display the current group of pixels in reverse video. 
    77 
    8 [wiki:libpipi] is pretty slow: around 2 minutes to process an image on a modern computer at full quality. It is certainly possible to make it run faster, but I am not aware of trivial ways to do so, except by reducing the computation depth (hence reducing the quality). 
     8libpipi is pretty slow: around 2 minutes to process an image on a modern computer at full quality. It is certainly possible to make it run faster, but I am not aware of trivial ways to do so, except by reducing the computation depth (hence reducing the quality). 
    99 
    1010== Downloads == 
    1111 
    12 There used to be a program called `img2oric` to do this task, but [wiki:libpipi]’s `pipi` utility is now far more powerful. 
     12There used to be a program called `img2oric` to do this task, but libpipi’s `pipi` utility is now far more powerful. 
    1313 
    1414Windows executable (28 Sep 2008 snapshot): [/files/libpipi/oric/pipi.exe pipi.exe]. 
    1515 
    16 You can download a [/export/2848/www/img2oric/OUTPUT.TAP sample OUTPUT.TAP] file as generated by [wiki:libpipi]. To load it into an Oric computer, or an emulator such as `xeuphoric`, just type '''`HIRES:CLOAD"OUTPUT"`''' and it will be immediately displayed. 
    17  
    18 For those interested, the relevant source code is in [/browser/libpipi/trunk/pipi/codec/oric.c oric.c]. 
     16For those interested, the relevant source code is in [/browser/libpipi/trunk/pipi/codec/oric.c oric.c]. You can also download a [/export/2848/www/img2oric/OUTPUT.TAP sample OUTPUT.TAP] file as generated by [wiki:libpipi]. To load it into an Oric computer, or an emulator such as `xeuphoric`, just type '''`HIRES:CLOAD"OUTPUT"`''' and it will be immediately displayed. 
    1917 
    2018== Examples == 
    … …  
    5452== Screenshots == 
    5553 
    56 These images show how [wiki:libpipi] performs. The results may not seem terribly clean, but they are probably better than anything that has been seen so far on an Oric computer. 
     54These images show how libpipi performs. The results may not seem terribly clean, but they are probably better than anything that has been seen so far on an Oric computer. 
    5755 
    5856These first 4 images show the results on the same images than the ones on Dbug’s [http://www.defence-force.org/computing/oric/coding/annexe_3/pictconv/ PictConv] website, to illustrate the improvements over the traditional RGB separation technique. 
    … …  
    6260[[Image(source:www/img2oric/dog.png)]] [[Image(source:www/img2oric/output-dog.png)]] [[Image(source:www/img2oric/lena.png)]] [[Image(source:www/img2oric/output-lena.png)]] 
    6361 
    64 The following images show [wiki:libpipi]’s results with grayscale 
     62The following images show libpipi’s results with grayscale 
    6563images and cartoon images. 
    6664