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improve to_bytes efficiency with struct.pack

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onyx-and-iris
2026-03-07 14:20:31 +00:00
parent 9f43ee18d3
commit 5363584940
2 changed files with 57 additions and 51 deletions
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58
vban_cmd/packet/headers.py
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@@ -1,3 +1,4 @@
import struct
from dataclasses import dataclass
from vban_cmd.enums import NBS
@@ -34,15 +35,16 @@ class VbanPingHeader:
"""Creates the PING header bytes only."""
header = cls(framecounter=framecounter)
data = bytearray()
data.extend(header.vban)
data.extend(header.format_sr.to_bytes(1, 'little'))
data.extend(header.format_nbs.to_bytes(1, 'little'))
data.extend(header.format_nbc.to_bytes(1, 'little'))
data.extend(header.format_bit.to_bytes(1, 'little'))
data.extend(header.streamname)
data.extend(header.framecounter.to_bytes(4, 'little'))
return bytes(data)
return struct.pack(
'<4s4B16sI',
header.vban,
header.format_sr,
header.format_nbs,
header.format_nbc,
header.format_bit,
header.streamname,
header.framecounter,
)
@dataclass
@@ -163,15 +165,16 @@ class VbanRTSubscribeHeader:
def to_bytes(cls, nbs: NBS, framecounter: int) -> bytes:
header = cls(nbs=nbs)
data = bytearray()
data.extend(header.vban)
data.extend(header.format_sr)
data.extend(header.format_nbs)
data.extend(header.format_nbc)
data.extend(header.format_bit)
data.extend(header.streamname)
data.extend(framecounter.to_bytes(4, 'little'))
return bytes(data)
return struct.pack(
'<4s4B16sI',
header.vban,
header.format_sr[0],
header.format_nbs[0],
header.format_nbc[0],
header.format_bit[0],
header.streamname,
framecounter,
)
@dataclass
@@ -215,15 +218,16 @@ class VbanRTRequestHeader:
name=name, bps_index=bps_index, channel=channel, framecounter=framecounter
)
data = bytearray()
data.extend(header.vban)
data.extend(header.sr)
data.extend(header.nbs)
data.extend(header.nbc)
data.extend(header.bit)
data.extend(header.streamname)
data.extend(header.framecounter.to_bytes(4, 'little'))
return bytes(data)
return struct.pack(
'<4s4B16sI',
header.vban,
header.sr[0],
header.nbs[0],
header.nbc[0],
header.bit[0],
header.streamname,
header.framecounter,
)
@classmethod
def encode_with_payload(