Octane Video: Using the Compression Option w/ VPro Graphics

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Octane Compression Option

The Octane Compression Option is an XIO option board that can provide SGI Octane workstations with analog video input/output and up to two streams of JPEG compression and/or decompression.

The Octane Compression Option is officially supported for installation only in Octanes with MGRAS/Impact based graphics. It is possible to install the Octane Compression Option in Octanes with VPro graphics using the following procedures:

Installing Octane Compression and IMPACT Compression Subsystems Software

Install the drivers and software necessary to use the Octane Compression before installing the hardware. SGI's Technical Publications Library, or TechPubs, specifies the software subsystems and prerequisites for the Octane Compression Option. TechPubs lists those subsystems and prerequisites as:

   Octane Compression and IMPACT Compression Software - includes the following subsystems:
         impactcomp.sw.eoe: Kernel device driver and Video and Compression Library software for Octane Compression and Impact Compression
         impactcomp.man.pages: Man pages for Octane Compression and Impact Compression
         impactcomp.man.relnotes: Release notes for Octane Compression and Impact Compression
         impactcomp.books.Ind2IMCpres_PG: Programmer's Guide for Octane Compression and Impact Compression
   Prerequisites - Octane Compression and Impact Compression require the following software:
         Octane and Impact Digital Media Base Execution Environment, 6.5 (impactdm)
         Digital Media Execution Environment, 6.5 (dmedia_eoe)


The Digital Media Execution Environment, dmedia_eoe, is installed from the IRIX Base (Foundation 1) and Overlay CDs (and may already be installed on your system).

The Octane/Impact Compression for IRIX 6.5 software includes the Octane/Impact Compression base software; impactcomp, and Octane/Impact Digital Media Base Execution Environment; impactdm. In addition to base software included in that distribution, you must also install the upgraded versions of impactcomp and impactdm from the "unbundled" directory of the Overlay (2 of 2) CD (dist/unbundled).


As mentioned previously, if you have a VPro graphics option installed, IRIX thinks VPro and Octane Compression are incompatible, and will indicate conflicts with the Octane/Impact Compression for IRIX 6.5 software. The IRIX Software Manager will allow an install in spite of unresolved conflicts with the "rulesoverride" setting.


If installing via Software Manager, the rulesoverride flag can be activated from the "File" menu on the toolbar (File>Set Preferences). The rulesoverride setting is transient and remains in effect only as long as that instance of Software Manager is open.


Confirming Installation of the Octane Compression Software

You can confirm you've installed all the necessary software subsystems <impactdm, dmedia and impactcomp> with the versions command:

   # versions impactcomp
     I = Installed, R = Removed
         Name                  Date           Description
     I  impactcomp           06/17/2006  IMPACT Compression Execution Environment 6.5.xx
     I  impactcomp.books     06/17/2006  IRIS InSight Books, 6.5
     I  impactcomp.books.Ind2IMCpres_PG  06/17/2006  IMPACT Compression Programmer's Guide
     I  impactcomp.books.OctaneCpres_PG  06/17/2006  Octane Compression Programmer's Guide
     I  impactcomp.man       06/17/2006  IMPACT Compression Documentation
     I  impactcomp.man.pages 06/17/2006  IMPACT Compression Man Pages
     I  impactcomp.man.relnotes  06/17/2006  IMPACT Compression Release Notes
     I  impactcomp.sw        06/17/2006  IMPACT Compression Software
     I  impactcomp.sw.eoe    06/17/2006  IMPACT Compression Execution Software


   # versions impactdm
     I = Installed, R = Removed
         Name                 Date        Description
     I  impactdm             06/17/2006  IMPACT Digital Media Base Execution Environment, 6.5.xx
     I  impactdm.man         06/17/2006  IMPACT Digital Media Base Documentation
     I  impactdm.man.relnotes  06/17/2006  IMPACT Digital Media Base Release Notes
     I  impactdm.sw          06/17/2006  IMPACT Digital Media Base Software
     I  impactdm.sw.eoe      06/17/2006  IMPACT Digital Media Base Execution Software


   # versions dmedia_eoe
     I = Installed, R = Removed
         Name                 Date        Description
     I  dmedia_eoe           01/24/2006  Digital Media Execution Environment, 6.5.xx
     I  dmedia_eoe.sw        01/24/2006  Digital Media Software
     I  dmedia_eoe.sw.synth  01/24/2006  MIDI Synthesizer
     I  dmedia_eoe.sw64      01/24/2006  Digital Media 64-bit Software
     I  dmedia_eoe.sw64.lib  01/24/2006  Digital Media 64-bit Execution Libraries
     I  dmedia_eoe           01/24/2006  Digital Media Execution Environment, 6.5.xx
     I  dmedia_eoe.books     01/24/2006  Digital Media Books
     I  dmedia_eoe.books.FXbuilder_Help  01/24/2006  FXBuilder Help
     I  dmedia_eoe.books.MediaTls_UG  01/24/2006  Media Tools User's Guide, Help and Book
     I  dmedia_eoe.books.SynthEditor_UG  01/24/2006  Using Synthesizer Editor
     I  dmedia_eoe.data      01/24/2006  Digital Media Data Files
     I  dmedia_eoe.data.movies  09/07/2003  Sample Movie Files
     I  dmedia_eoe.data.soundscheme  09/07/2003  Desktop Sound Files
     I  dmedia_eoe.data.synth  01/24/2006  MIDI Synthesizer Data Files
     I  dmedia_eoe.man       01/24/2006  Digital Media Documentation
     I  dmedia_eoe.man.pages 01/24/2006  Digital Media Manual Pages
     I  dmedia_eoe.man.relnotes  01/24/2006  Digital Media Release Notes
     I  dmedia_eoe.sw        01/24/2006  Digital Media Software
     I  dmedia_eoe.sw.audio  01/24/2006  Audio System Components
     I  dmedia_eoe.sw.base   01/24/2006  Digital Media System Components
     I  dmedia_eoe.sw.lib    01/24/2006  Digital Media Execution Libraries
     I  dmedia_eoe.sw.plugins  01/24/2006  Digital Media Plug-ins
     I  dmedia_eoe.sw.tools  01/24/2006  Digital Media Tools



Installing Octane Compression Option Hardware

Shut down and unplug the power from your Octane. The XIO tri-carrier in Octanes with VPro graphics allows for installation of two half-height XIO boards. To avoid having your Octane run in "fastfan" mode, install the Octane Compression Option in XIO slot "C" (the one farthest from the power supply). Re-install the tri-carrier and restart your Octane. For further reference, the OCTANE Digital Video and Compression Hardware Installation Guide can be downloaded.

Starting the Video Daemon

At a command prompt (with root privileges), query the system configuration state:

     # chkconfig 

Check that "windowsystem" configuration flag is set to "on", it should appear in the chkconfig list as:

     windowsystem         on

Set the video daemon (videod) configuration flag "on":

     # chkconfig videod 

And either reboot or load the video daemon manually:

     /etc/init.d/videod start

At this point you should be able to connect an anlogue video source to either the composite or s-video in ports and display a live video feed on your desktop using videoin

External Links and Sources

ZoontF's nekochan post: Odyssey/Vpro and Octane Compression - slight update

Chris Pirazzi's: Lurker's Guide to Video

Ian Mapleson's SGI Depot: Depot Resources

SGI TechPubs: impactcomp

SGI TechPubs: The Octane Compression Programmer's Guide

SGI TechPubs (Download Only): OCTANE Digital Video and Compression Installation Guide (Hardware)