The DIVO (Digital Video Option) board is a video option that provides Onyx 2™, Origin200™, and Origin2000™ workstations and servers with broadcast-quality video. The option also provides 16 channels of audio.
 | Note: This option requires IRIX™ 6.4 or later. |
Features of the DIVO option are controlled with the Video Library (VL) and the Audio Library (AL). VL device-independent calls and controls are explained in the Digital Media Programming Guide (007-1799-060 or later).
This guide was written for the sophisticated video user in a professional or research environment. It is written on the presumption that you are familiar with video standards, the operation of the Onyx2, Origin200, or Origin2000 workstation or server, and the VL information in the Digital Media Programming Guide.
Many current Silicon Graphics owner's guides, programming guides, and user's guides are available through the World Wide Web: http://www.sgi.com/.
This guide includes the following chapters and appendices:
Chapter 1, “DIVO Features and Capabilities,” outlines the main components of the DIVO option.
Chapter 2, “Programming DIVO,” describes using the VL to accomplish common specific tasks.
Appendix A, “DIVO I/O Panel Connector Specifications,” summarizes technical specifications for the DIVO board.
Appendix B, “Pixel Packings and Color Spaces,” sets forth all packing formats used by the DIVO hardware.
Appendix C, “Setting Up DIVO for Your Video Hardware,” describes connecting video equipment to DIVO board connectors and using the control panel vcp to configure the DIVO board for the equipment.
Appendix D, “Color-Space Conversions,” explains DIVO color spaces, the mathematical operations performed during conversions, and the implications of color space conversions.
Appendix E, “Programming Methods for Real-Time Digital Media Recording and Playback,” explains programming concepts, such as real-time disk I/O, and gives examples.
Appendix F, “Diagnostics,” explains use of the diagnostic script.
An index completes this guide.
In command syntax descriptions and examples, square brackets ( [ ] ) surrounding an argument indicate an optional argument. Variable parameters are in italics. Replace these variables with the appropriate string or value.
In text descriptions, IRIX filenames are in italics.
Helvetica Bold font is used for labels on hardware, such as the names of ports on the I/O panel.
Messages and prompts that appear on-screen are shown in typewriter font. Entries that are to be typed exactly as shown are in boldface typewriter font.
In each chapter in which it occurs, the Digital Media Programming Guide is referred to by its full title at the first occurrence and thereafter as the DMPG.