OCTANE^™ Digital Video Programmer's Guide

Table of Contents

About This Guide

Audience

Structure of This Document

Other Documents

Conventions

1. Features of the OCTANE Digital Video Option

OCTANE Digital Video Board Capabilities

Video Library Capabilities

VL System Software Architecture

VL Architectural Model of Video Devices

OCTANE Digital Video Formats

2. Creating Video Programs With the Video Library

The VL Programming Model

Performing Preliminary Steps

Opening a Connection to the Video Daemon

Specifying Nodes on the Data Path

Creating and Setting Up the Data Path

Setting Parameters for Data Transfer to or From Memory

Displaying Video Data Onscreen

Transferring Video Data to and From Devices

Ending Data Transfer

Example Programs

3. Using VL Controls

VL Control Type and Values

VL Control Fraction Ranges

VL Control Classes

VL Control Groupings

4. Event Handling

OCTANE Digital Video VL Events

Querying VL Events

Creating a VL Event Loop

Creating a Main Loop With Callbacks

5. Managing Connections

Specifying Connectivity

Avoiding Dynamic Switching Problems

Using the Internal Video Sync Signal

6. Video Real-Time Capture and Playback

Video Library Buffers

Caching

Buffer Alignment

Direct I/O to Disk

syssgi

Asynchronous I/O

Capture and Playback Examples

7. Blending, Keying, and Transitions

The Blender Node

Keying

The Keyer

VL Blending Examples

8. Using Color-Space Conversion

Features of the Color-Space Conversion Node

Performing Standard Color-Space Conversions

Using the Color-Space Converter for Image Processing

Examples

9. Using Video Texture Mapping

Performing Video Texture Mapping

Controls for Video Texture Mapping

OpenGL Functions for Video Texture Mapping

Example Program: vidtotex.c

A. Return Codes

B. OCTANE Digital Video Nodes and Their Controls

VL_DEVICE

VL_BLENDER

VL_CSC

VL_FB

VL_MEM

VL_SCREEN

VL_TEXTURE

VL_VIDEO

C. OCTANE Digital Video Color-Space Conversions

OCTANE Digital Video Color Spaces

Mathematical Operations Performed During Conversions

Implications of Color-Space Conversions

Example Color Conversions

Glossary

Index