156
Studio
Camera
Control
Protocol
Receiving
devices
should
use
the
destination
device
address
and/or
the
command
identifier
to
determine
which
messages
to
process.
The
receiver
should
use
the
command
length
to
skip
irrelevant
or
unknown
commands
and
should
be
careful
to
skip
the
implicit
padding
as
well.
Defined
Commands
Command
0:
change
configuration
Category (uint8)
The
category
number
specifies
one
of
up
to
256
configuration
categories
available
on
the
device.
Parameter (uint8)
The
parameter
number
specifies
one
of
256
potential
configuration
parameters
available
on
the
device.
Parameters
0
through
127
are
device specific
parameters.
Parameters
128
though
255
are
reserved
for
parameters
that
apply
to
multiple
types
of
devices.
Data type (uint8)
The
data
type
specifies
the
type
of
the
remaining
data.
The
packet
length
is
used
to
determine
the
number
of
elements
in
the
message.
Each
message
must
contain
an
integral
number
of
data
elements.
Currently
defined
values
are:
0: void / boolean
A
void
value
is
represented
as
a
boolean
array
of
length
zero.
The
data
field
is
a
8
bit
value
with
0
meaning
false
and
all
other
values
meaning
true.
1: signed byte
Data
elements
are
signed
bytes
2: signed 16 bit integer
Data
elements
are
signed
16
bit
values
3: signed 32 bit integer
Data
elements
are
signed
32
bit
values
4: signed 64 bit integer
Data
elements
are
signed
64
bit
values
5: UTF-8 string
Data
elements
represent
a
UTF-8
string
with
no
terminating
character.
Data types 6 through 127 are reserved.
128: signed 5.11 fixed point
Data
elements
are
signed
16
bit
integers
representing
a
real
number
with
5 bits
for
the
integer
component
and
11
bits
for
the
fractional
component.
The
fixed
point
representation
is
equal
to
the
real
value
multiplied
by
2^11.
The
representable
range
is
from
-16.0
to
15.9995
(15
+
2047/2048).
Data types 129 through 255 are available for device specific purposes.
Operation type (uint8)
The
operation
type
specifies
what
action
to
perform
on
the
specified
parameter.
Currently
defined
values
are:
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