Appendix A: Control Protocol
IMAGESTAR HD USER GUIDE
Page 82
I460GB issue 4
SetViewport
Function
Adjusts the viewport for the specified source.
NOTE
:
A minimum viewport of 95% is always applied to video sources to remove
unwanted blanking, etc.
Format
SetViewport=
<
channel
>
,
<
horizontal size
>
,
<
vertical size
>
,
<
horizontal position
>
,
<
vertical position
>
,0\r
Arguments
<
channel
> is the input channel number:
0
= Input 1 (RGB)
1
= Input 2 (RGB)
2
= Input 3 (VIDEO / S-VIDEO)
3
= Input 4 (VIDEO)
The two <
…size
> values set the size of the viewport relative to the entire source
frame and are defined as follows:
percentage viewport × 4096 ÷ 100
For example 90% = 90 × 4096 ÷ 100 =
3686
.
The two <
…position
> values are measured in pixels and define the top left corner
of the viewport relative to the input source.
Example
SetViewport=3,3686,3686,5,5,0\r
Creates a 90% viewport for input 4 with the top left corner 5 pixels in from the left
of the source and 5 pixel down from the top.
