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Contents
System clock implementation................................................................... 51
System clock terminology................................................................................51
System clock utilities .......................................................................................51
Using the system clock for time stamping ...................................................... 52
Time stamping and asynchronous operations ................................................ 53
Time stamping for multiple channels .................................................................................. 54
Managing processing speed and resources .......................................... 55
Chapter 5
Flex Input and Output Implementation
Overview of the Flex Input and Output module ....................................... 58
Flex input and output terminology ........................................................... 59
Flex Input and Output module operations ............................................... 60
Retrieving the number of audio/video inputs and outputs .............................. 60
Setting input, output, and genlock resolutions................................................ 60
Controlling input and output devices .............................................................. 60
Controlling playback and capture ................................................................... 60
Controlling genlock ......................................................................................... 60
Using the Flex Input and Output module .................................................. 61
Capturing audio and video...............................................................................61
Playing back audio and video ......................................................................... 63
Using an alias video surface to perform a simultaneous capture and
playback of a video stream ........................................................................... 65
Capture and playback formats ....................................................................... 67
Capturing and playing back vertical blanking interval (VBI) surfaces .............. 68
DSX genlock system................................................................................ 69
About the genlock flywheel for X.264io, X.AVCio, and X.mio .......................... 69
Setting the genlock flywheel parameters.............................................................................71
Changing the genlock source with the flywheel ..................................................................71
Controlling input during capture ...............................................................72
X.mio card .......................................................................................................................... 72
Input and output device control parameters............................................72
Hardware selection services .......................................................................... 78
Audio capture combinations for X.mio hardware.................................... 80
Auto-detecting resolutions for X.mio2...................................................... 81
Using the zero-frame delay feature of X.mio2 and DSX LE2/CG ............ 82
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