mcap.data_stream module

class mcap.data_stream.ReadDataStream(stream: IO[bytes], calculate_crc: bool = False)

Bases: object

checksum() → int

property count: int

read(length: int) → bytes

read1() → int

read2() → int

read4() → int

read8() → int

read_prefixed_string() → str

class mcap.data_stream.RecordBuilder

Bases: object

Accumulates serialized records in a bytearray: appends are amortized O(1) and a record’s length is patched in with a slice assignment.

property count: int

end() → bytearray

Hands over the buffer and starts a new one.

finish_record()

start_record(opcode: Opcode)

write(data: bytes | bytearray | memoryview)

write1(value: int)

write2(value: int)

write4(value: int)

write8(value: int)

write_prefixed_string(value: str)