mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
99 lines
4.2 KiB
Python
99 lines
4.2 KiB
Python
"""
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FRAME DISPATCHER - We are dispatching the received frames to the needed functions
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"""
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import threading
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import structlog
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from modem_frametypes import FRAME_TYPE as FR_TYPE
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import event_manager
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from data_frame_factory import DataFrameFactory
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from frame_handler import FrameHandler
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from frame_handler_ping import PingFrameHandler
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from frame_handler_cq import CQFrameHandler
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from frame_handler_arq_session import ARQFrameHandler
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class DISPATCHER():
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FRAME_HANDLER = {
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FR_TYPE.ARQ_SESSION_OPEN_ACK.value: {"class": ARQFrameHandler, "name": "ARQ OPEN ACK"},
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FR_TYPE.ARQ_SESSION_OPEN.value: {"class": ARQFrameHandler, "name": "ARQ Data Channel Open"},
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FR_TYPE.ARQ_SESSION_INFO_ACK.value: {"class": ARQFrameHandler, "name": "ARQ INFO ACK"},
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FR_TYPE.ARQ_SESSION_INFO.value: {"class": ARQFrameHandler, "name": "ARQ Data Channel Info"},
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FR_TYPE.ARQ_CONNECTION_CLOSE.value: {"class": ARQFrameHandler, "name": "ARQ CLOSE SESSION"},
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FR_TYPE.ARQ_CONNECTION_HB.value: {"class": ARQFrameHandler, "name": "ARQ HEARTBEAT"},
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FR_TYPE.ARQ_CONNECTION_OPEN.value: {"class": ARQFrameHandler, "name": "ARQ OPEN SESSION"},
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FR_TYPE.ARQ_STOP.value: {"class": ARQFrameHandler, "name": "ARQ STOP"},
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FR_TYPE.ARQ_STOP_ACK.value: {"class": ARQFrameHandler, "name": "ARQ STOP ACK"},
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FR_TYPE.BEACON.value: {"class": FrameHandler, "name": "BEACON"},
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FR_TYPE.ARQ_BURST_FRAME.value:{"class": ARQFrameHandler, "name": "BURST FRAME"},
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FR_TYPE.ARQ_BURST_ACK.value: {"class": ARQFrameHandler, "name": "BURST ACK"},
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FR_TYPE.CQ.value: {"class": CQFrameHandler, "name": "CQ"},
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FR_TYPE.PING_ACK.value: {"class": FrameHandler, "name": "PING ACK"},
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FR_TYPE.PING.value: {"class": PingFrameHandler, "name": "PING"},
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FR_TYPE.QRV.value: {"class": FrameHandler, "name": "QRV"},
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FR_TYPE.IS_WRITING.value: {"class": FrameHandler, "name": "IS_WRITING"},
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FR_TYPE.FEC.value: {"class": FrameHandler, "name": "FEC"},
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FR_TYPE.FEC_WAKEUP.value: {"class": FrameHandler, "name": "FEC WAKEUP"},
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}
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def __init__(self, config, event_manager, states, modem):
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self.log = structlog.get_logger("frame_dispatcher")
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self.log.info("loading frame dispatcher.....\n")
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self.config = config
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self.states = states
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self.event_manager = event_manager
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self._initialize_handlers(config, states)
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self.modem = modem
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self.data_queue_received = modem.data_queue_received
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self.arq_sessions = []
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def _initialize_handlers(self, config, states):
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"""Initializes various data handlers."""
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self.frame_factory = DataFrameFactory(config)
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def start(self):
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"""Starts worker threads for transmit and receive operations."""
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threading.Thread(target=self.worker_receive, name="Receive Worker", daemon=True).start()
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def worker_receive(self) -> None:
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"""Queue received data for processing"""
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while True:
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data = self.data_queue_received.get()
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self.new_process_data(
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data['payload'],
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data['freedv'],
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data['bytes_per_frame'],
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data['snr'],
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data['frequency_offset'],
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)
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def new_process_data(self, bytes_out, freedv, bytes_per_frame: int, snr, frequency_offset) -> None:
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# get frame as dictionary
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deconstructed_frame = self.frame_factory.deconstruct(bytes_out)
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frametype = deconstructed_frame["frame_type_int"]
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if frametype not in self.FRAME_HANDLER:
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self.log.warning(
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"[Modem] ARQ - other frame type", frametype=FR_TYPE(frametype).name)
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return
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# instantiate handler
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handler_class = self.FRAME_HANDLER[frametype]['class']
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handler: FrameHandler = handler_class(self.FRAME_HANDLER[frametype]['name'],
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self.config,
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self.states,
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self.event_manager,
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self.modem)
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handler.handle(deconstructed_frame, snr, frequency_offset, freedv, bytes_per_frame)
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def get_id_from_frame(self, data):
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if data[:1] == FR_TYPE.ARQ_SESSION_OPEN:
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return data[13:14]
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return None
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