Add socket into backend. That allow record/stop by python

[chenxinfeng4]

The code for complete issue #55

Use python3 to start / stop Control Pannel.

Prospect:

• Use python3 to synchronize Miniscope software with other DAQ system.

• Synchronize multiple Miniscope software.

Demo:

1. Use python3 commands to synchronize

# %%
import socket
import time
# %% create connection
tcp_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serve_ip = 'localhost'
serve_port = 20172       #default backend Socket PORT [20172, 20173, 20174, 20175, ...]
tcp_socket.connect((serve_ip, serve_port))


def send_read(send_data):
    send_data_byte = send_data.encode("utf-8")
    tcp_socket.send(send_data_byte)

    from_server_msg = tcp_socket.recv(1024)
    print(from_server_msg.decode("utf-8"))

# %% Supported commands
cmds = ['query_record', 'start_record', 'stop_record']

for send_data in cmds:
    send_read(send_data)
    time.sleep(5)

2. Use bind hotkey to synchronize

Further, I can bind global-hotkeys to start_record(F2) and stop_record(F4).
Multiple DAQ can bind the same hotkey to start together.

# !pip install global-hotkeys
import socket
import time
from global_hotkeys import *

# Flag to indicate the program whether should continue running.
is_alive = True

# %% create connection
def send_read(send_data):
    try:
        tcp_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        serve_ip = 'localhost'
        serve_port = 20172       #default ArControl Recorder Socket PORT
        tcp_socket.connect((serve_ip, serve_port))
        send_data_byte = send_data.encode("utf-8")
        tcp_socket.send(send_data_byte)

        from_server_msg = tcp_socket.recv(1024)
        print(from_server_msg.decode("utf-8"))
        del tcp_socket
    except Exception:
        pass
    

bindings = [
    [["f2"], lambda: send_read("start_record"), None],
    [["f4"], lambda: send_read("stop_record"), None],
]

register_hotkeys(bindings)

# Finally, start listening for keypresses
start_checking_hotkeys()

print("Ready. \n1. [F2] to start. \n2. [F4] to stop.")
# Keep waiting until the user presses the exit_application keybinding.
# Note that the hotkey listener will exit when the main thread does.
while is_alive:
    time.sleep(2)