Abekas Tools

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PLEASE NOTE:
Software in the abekas subtree is free. Software is provided with the intent to help you learn by example. Furthermore, all software is for use only on Silicon Graphics platforms only. While we welcome your feedback (please contact ABEKAS directly with any feedback you may have. They are the sole creators of this subtree), ideas and requests IT IS ESSENTIAL TO UNDERSTAND THAT THESE GIFTS ARE UNSUPPORTED BY SILICON GRAPHICS OR ABEKAS VIDEO SYSTEMS. Therefore, any use of these goodies is done so at the users risk. Though efforts are made to provide working examples, no guarantee (express or implied) is given for the performance of the software or suitability for a particular purpose.

We wish to thank Rhonda Graphics Inc. of Phoenix AZ for the inclusion of their acp (Abekas Control Panel) code. In addition, thanks to Paul Meyer of NASA for his scripts.

Feel free to cut and paste from the software provided. Tools included in these directories may be useful as is or at least give an example for creating your own.

• Makefile - This will build all the tools in this directory. Just type "make".

• README - This file in ascii.

• _panel/ - A directory containing a control panel from Rhonda Graphics Inc.

• _rs232/ - A directory containing some basic functions for RS-232 control of an A60 or A64 from an SGI platform.

• _scripts/ - A directory containing some useful shell scripts.

• scsi.doc - This file contains in depth help on scsi connections to/from Abekas A60/A64 disk recorders from SGI platforms.

Most of the software herein is provided as separate tools. It shouldn't be too difficult to merge them together. Note that 'toyuv' deals with frames but 'engoop' and 'scwrite' deal with fields so somewhere you need to split the frame up.

Many of the programs contain constant #defines at the top for the differences between 625 and 525 line systems. For 525 line systems you need to add a line that says #define LINES_525

abklib.c - This file is a collection of functions used with yuv.c.

degoop.c - Usage: degoop infile outfile

field is the intended dest field on the A60
eg
field 100 is a f1 (as an rcp file spec f50.yuv)
field 101 is a f2 (as an rcp file spec f50+.yuv)

Takes a YUV field in Abekas tape (SCSI) format and strips line numbers and syncs for a clean YUV field.

engoop.c - Usage: engoop infile outfile

field is the intended dest field on the A60
eg
field 100 is a f1 (as an rcp file spec f50.yuv)
field 101 is a f2 (as an rcp file spec f50+.yuv)

Takes a YUV file and adds the formatting necessary for transfer to the A60 through the SCSI port or to tape. Ethernet transfers use only the active portion of the display, SCSI format requires line syncs (like CCIR 601 digital video) and line number information to be added to the data stream. The program has to know whether the field is a field 1 or a field 2. The next parameter is therefore the destination field number on the disk (numbered from 0). On 525 line systems field 0 on the disk is a field 1 and contains the even lines. For 625 it contains the odd lines.

mycp.c - Usage: mycp file.yuv A60_frame frames

Quick lash up to test homebrew rcp using sockets. 'r' commands protocol is reverse engineered by watching what real systems do. Socket stuff comes from the IPC Primer "Networking on the Sun Workstation". Don't expect this to connect to a real Unix shell or login service. They are more security conscious and require you to be bound to a privileged port on the local machine.

scread.c - Usage: scread

This program reads one field at a time from an A60 on the SCSI port. The syncs and line numbers included in the SCSI transfer must be stripped separately. Degoop may be used for this function.

readlabel.c - Usage: readlabel

This example reads the first block of the A60.

ready.c - Usage: ready

This example determines if a SCSI device is ready.

rgb2yuv.c - Usage: rgb2yuv

This program converts an RGB file to an Abekas YUV file. The syncs and line numbers needed for SCSI transfer must be added separately. Engoop is used for this function. (NOTE: This program is useful for speeding up Ethernet transfers since the internal A60 RGB->YUV conversion is slower than running this program on an Iris.)

scscan.c - Usage: scscan

This proggy dumps Abekas SCSI format decoding syncs and line #'s

status.c - Usage: status

This program demonstrates how to read the A60 status by reading a single block from block 0 through via SCSI.

scwrite.c - Usage: scwrite

This program writes one field at a time to a specified location on the A60 on the SCSI port. The syncs and line numbers needed for SCSI transfer must be added separately. Engoop may be used for this function.

yuv.c - Usage: yuv

This program puts an Abekas YUV frame in a window on the Iris screen. The YUV file must be free of the syncs and line numbers found in SCSI transfers. Engoop may be used for this function.

yuv2rgb.c - Usage: yuv2rgb

This program converts an Abekas YUV file to an RGB file. If syncs and line numbers needed for SCSI transfer are in the YUV file, they must be stripped off before using yuv2rgb. Degoop may used for this function.