video documentation

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Except for lurker, this directory is entirely composed of links to documents elsewhere in the DT pertaining to video:

• the Lurker's Guide: a repository for the little-known, undocumented knowledge that you need in order to write any sort of video app on SGI machines. Topics explored in great detail include:
  Video in General
  • Fields: Why Video Is Crucially Different from Graphics
  • Definitions: F1/F2, Interleave, Field Dominance, and More
  • How Big Is Video?
  The VL
  • Displaying In-Memory Video Using OpenGL
  • Displaying Video Using Galileo (ev1)
  • Tips for Writing Your Main (select, event) Loop
  • Choosing an Input Jack
  • Hints for Vid-to-Mem Applications
  SGI Video Devices
  • Taxonomy of the ev1 and cosmo1 Boards
  • Taxonomy of the ev3 and cosmo2 Boards

• toolbox/hardware/video/dig_video_spec.ps: SGI Digital Video Specification
  describes the SGI Digital Video specification. The specification defines the data format, electrical and mechanical interfaces used to get digital video data into and out of the Silicon Graphics platforms via this 60-pin connector. This connector is found currently on the Galileo Video cards for Indigo and Indigo2, the IndyCam port on the Indy, the IndyVideo board and the Cosmo Compress cards for Indigo and Indy.

  From page one of the spec:

  This document defines the electrical specifications of the SGI Digital Video standard and the mechanical interface to the digital video port. This interface is used for transporting digital video information either in to or out of Silicon Graphics machines. There are currently three implementations of this interface. Two of them are external connections to SGI products - an input only implementation as used by the IndyCam digital camera on the Indy workstation, and an input/output implementation as found on the Gaileo, Indy Video, Indigo^2 video add-in products and the Cosmo Compress Motion JPEG compression card. The third implementation is the internal connection used to connect the Indy Video and Cosmo Compress boards together. This specification covers all three of these variations.

• toolbox/src/exampleCode/video/SWconfig4VidOptProds.txt:
  software configuration listing for video option products running 5.2 IRIX

• toolbox/documents/SiliconStudio, Silicon Studio Technical Report, covers video and compression products including:
  • sstrGV.ps: Gailieo Video Technical Report
  • sstrIndyVid.ps: Indy/Indigo^2 Video Techincal Report
  • sstrCC.ps: Cosmo Compress Techincal Report
  • sstrSV.ps: Sirius Video Technical Report