User`s manual

11. Appendix A - Hydra Open Protocol
Barco – iStudio – R5976569 – user's manual – revision 09 – March-2007
__________________________________________________________________________________
11-11
11.3.4 File content
This section explains structure and content of the layout files, the wall layout files, the stream configuration file
and the encoder configuration file.
Do not change files of other type than the once mentioned above! By doing so, you might
mis-configure the system which might prevent the Hydra from booting.
Syntax
• File location:
The files are stored in /home/hydra/flash/save/. The following sections refer to the file types:
• File names:
The stream configuration file and the encoder configuration file have predefined names. Layout and wall lay-
out files have user defined names with a definite extension. Layout files end with _layout, wall layout
files end with _wall. The first part of the name is the name that is also used with the iS
TUDIO GUI. Additional
underscores might be used in this first part of the name, e.g. 4x4_video_layout is the layout file with
the layout 4x4_video.
• File structure:
The content of a file begins with _begin_ and ends with _end_, between these two lines there are multi-
ple blocks which might be of different type. A block begins with begin and ends with end. The second line
in a block lists the block type. The block type has an initial upper case letter. After the block type, follow the
entries with the assigned values: entry = value. The name of an entry is completely written in lower
case.
The table below gives an overview about type, name and structure of the different files:
type file name structure
Layout name_layout one General block, multiple different Object blocks
Wall layout name_wall multiple Module blocks
Stream configuration streams_config multiple Stream blocks
Encoder configuration encoders_config multiple Encoder blocks
• Font names:
When specifying TrueType fonts in the files, start with tt- add the font name and then add the pixel size
–xx. E.g. for mingliu1 with font size 24 the following is used: tt-mingliu1-24. The available TrueType
fonts can be found under the path /home/hydra/fonts.