mp.Timestamp

A class which represents a timestamp in the MediaPipe framework.

  mp 
 . 
 Timestamp 
 () 
 

MediaPipe timestamps are in units of microseconds . There are several special values (All these values must be constructed using the static methods provided): UNSET: The default initialization value, not generally valid when a timestamp is required. UNSTARTED: The timestamp before any valid timestamps. This is the input timestamp during Calcultor::Open(). PRESTREAM: A value for specifying that a packet contains "header" data that should be processed before any other timestamp. Like poststream, if this value is sent then it must be the only value that is sent on the stream. MIN: The minimum range timestamp to see in Calcultor::Process(). Any number of "range" timestamp can be sent over a stream, provided that they are sent in monotonically increasing order. MAX: The maximum range timestamp to see in Process(). POSTSTREAM: A value for specifying that a packet pertains to the entire stream. This "summary" timestamp occurs after all the "range" timestamps. If this timestamp is sent on a stream, it must be the only packet sent. DONE: The timestamp after all valid timestamps. This is the input timestamp during Calcultor::Close().

Methods

from_seconds

  from_seconds 
 () 
 

from_seconds(arg0: float) -> mediapipe.python._framework_bindings.timestamp.Timestamp

Create a timestamp from a seconds value

Args: seconds: A seconds value in float.

Returns: A MediaPipe Timestamp object.

Examples: timestamp_now = mp.Timestamp.from_seconds(time.time())

is_allowed_in_stream

  is_allowed_in_stream 
 () 
 

is_allowed_in_stream(self: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

Returns true iff this can be the timestamp of a Packet in a stream.

Any number of RangeValue timestamps may be in a stream (in monotonically increasing order). Also, exactly one prestream, or one poststream packet is allowed.

is_range_value

  is_range_value 
 () 
 

is_range_value(self: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

Check if the timestamp is a range value is anything between Min() and Max() (inclusive).

Any number of packets with range values can be sent over a stream as long as they are sent in monotonically increasing order. is_range_value() isn't quite the opposite of is_special_value() since it is valid to start a stream at Timestamp::Min() and continue until timestamp max (both of which are special values). prestream and postStream are not considered a range value even though they can be sent over a stream (they are "summary" timestamps not "range" timestamps).

is_special_value

  is_special_value 
 () 
 

is_special_value(self: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

Check if the timestamp is a special value,

  A 
 special 
 value 
 is 
 any 
 of 
 the 
 values 
 which 
 cannot 
 be 
 constructed 
 directly 
 but 
 must 
 be 
 constructed 
 using 
 the 
 static 
 special 
 value 
 . 
 

microseconds

  microseconds 
 () 
 

microseconds(self: mediapipe.python._framework_bindings.timestamp.Timestamp) -> int

Return the value in units of microseconds as an int.

seconds

  seconds 
 () 
 

seconds(self: mediapipe.python._framework_bindings.timestamp.Timestamp) -> float

Return the value in units of seconds as a float.

__eq__

  __eq__ 
 () 
 

eq(self: mediapipe.python._framework_bindings.timestamp.Timestamp, arg0: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

__ge__

  __ge__ 
 () 
 

ge(self: mediapipe.python._framework_bindings.timestamp.Timestamp, arg0: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

__gt__

  __gt__ 
 () 
 

gt(self: mediapipe.python._framework_bindings.timestamp.Timestamp, arg0: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

__le__

  __le__ 
 () 
 

le(self: mediapipe.python._framework_bindings.timestamp.Timestamp, arg0: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool

__lt__

  __lt__ 
 () 
 

lt(self: mediapipe.python._framework_bindings.timestamp.Timestamp, arg0: mediapipe.python._framework_bindings.timestamp.Timestamp) -> bool