`luma.core.util`

luma.core.util.bytes_to_nibbles(data)[source]

Utility function to take a list of bytes (8 bit values) and turn it into a list of nibbles (4 bit values)

Parameters:: data (list) – a list of 8 bit values that will be converted
Returns:: a list of 4 bit values
Return type:: list

New in version 1.16.0.

luma.core.util.from_16_to_8(data)[source]

Utility function to take a list of 16 bit values and turn it into a list of 8 bit values

Parameters:: data (list) – list of 16 bit values to convert
Returns:: a list of 8 bit values
Return type:: list

New in version 1.16.0.

luma.core.util.from_8_to_16(data)[source]

Utility function to take a list of 8 bit values and turn it into a list of signed 16 bit integers

Parameters:: data (list) – list of 8 bit values to convert
Returns:: a list of 16 bit values
Return type:: list

New in version 1.16.0.

class luma.core.util.mutable_string(value)[source]: Bases: object

class luma.core.util.observable(target, observer)[source]

Bases: object

Wraps any container object such that on inserting, updating or deleting, an observer is notified with a payload of the target. All other special name methods are passed through parameters unhindered.

luma.core.util.perf_counter()[source]

time.perf_counter_ns() in seconds

Returns:: the value (in fractional seconds) of a performance counter
Return type:: float

New in version 2.4.0.

luma.core.util.unsigned_16_to_signed(value)[source]

Utility function to convert unsigned 16 bit value to a signed value

Parameters:: value (int) – the 16 bit value that needs to be converted
Returns:: a signed integer
Return type:: int

New in version 1.16.0.

luma.core.util

`luma.core.util`