#!/usr/bin/env python3 # -*- coding: utf-8 -*- import pyaudio import audioop import time import argparse import sys import ctypes from ctypes import * import pathlib sys.path.insert(0,'..') import codec2 #--------------------------------------------GET PARAMETER INPUTS parser = argparse.ArgumentParser(description='Simons TEST TNC') parser.add_argument('--bursts', dest="N_BURSTS", default=0, type=int) parser.add_argument('--framesperburst', dest="N_FRAMES_PER_BURST", default=0, type=int) parser.add_argument('--audiodev', dest="AUDIO_INPUT_DEVICE", default=-1, type=int, help="audio device number to use") parser.add_argument('--debug', dest="DEBUGGING_MODE", action="store_true") parser.add_argument('--list', dest="LIST", action="store_true", help="list audio devices by number and exit") parser.add_argument('--timeout', dest="TIMEOUT", default=10, type=int, help="Timeout (seconds) before test ends") args = parser.parse_args() if args.LIST: p = pyaudio.PyAudio() for dev in range(0,p.get_device_count()): print("audiodev: ", dev, p.get_device_info_by_index(dev)["name"]) quit() N_BURSTS = args.N_BURSTS N_FRAMES_PER_BURST = args.N_FRAMES_PER_BURST AUDIO_INPUT_DEVICE = args.AUDIO_INPUT_DEVICE TIMEOUT = args.TIMEOUT # AUDIO PARAMETERS AUDIO_FRAMES_PER_BUFFER = 2048 MODEM_SAMPLE_RATE = codec2.api.FREEDV_FS_8000 AUDIO_SAMPLE_RATE_RX = 48000 assert (AUDIO_SAMPLE_RATE_RX % MODEM_SAMPLE_RATE) == 0 # SET COUNTERS rx_total_frames_datac0 = 0 rx_frames_datac0 = 0 rx_bursts_datac0 = 0 rx_total_frames_datac1 = 0 rx_frames_datac1 = 0 rx_bursts_datac1 = 0 rx_total_frames_datac3 = 0 rx_frames_datac3 = 0 rx_bursts_datac3 = 0 # open codec2 instance datac0_freedv = cast(codec2.api.freedv_open(14), c_void_p) datac0_bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(datac0_freedv)/8) datac0_n_max_modem_samples = codec2.api.freedv_get_n_max_modem_samples(datac0_freedv) datac0_bytes_out = create_string_buffer(datac0_bytes_per_frame * 2) codec2.api.freedv_set_frames_per_burst(datac0_freedv,N_FRAMES_PER_BURST) datac0_buffer = bytes() datac1_freedv = cast(codec2.api.freedv_open(10), c_void_p) datac1_bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(datac1_freedv)/8) datac1_n_max_modem_samples = codec2.api.freedv_get_n_max_modem_samples(datac1_freedv) datac1_bytes_out = create_string_buffer(datac1_bytes_per_frame * 2) codec2.api.freedv_set_frames_per_burst(datac1_freedv,N_FRAMES_PER_BURST) datac1_buffer = bytes() datac3_freedv = cast(codec2.api.freedv_open(12), c_void_p) datac3_bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(datac3_freedv)/8) datac3_n_max_modem_samples = codec2.api.freedv_get_n_max_modem_samples(datac3_freedv) datac3_bytes_out = create_string_buffer(datac3_bytes_per_frame * 2) codec2.api.freedv_set_frames_per_burst(datac3_freedv,N_FRAMES_PER_BURST) datac3_buffer = bytes() # check if we want to use an audio device then do an pyaudio init if AUDIO_INPUT_DEVICE != -1: p = pyaudio.PyAudio() # --------------------------------------------OPEN AUDIO CHANNEL RX stream_rx = p.open(format=pyaudio.paInt16, channels=1, rate=AUDIO_SAMPLE_RATE_RX, frames_per_buffer=AUDIO_FRAMES_PER_BUFFER, input=True, input_device_index=AUDIO_INPUT_DEVICE ) timeout = time.time() + TIMEOUT receive = True BUF_SIZE = 160 while receive and time.time() < timeout: if AUDIO_INPUT_DEVICE != -1: buf_size_converted = int(BUF_SIZE*(AUDIO_SAMPLE_RATE_RX/MODEM_SAMPLE_RATE)) data_in = stream_rx.read(buf_size_converted, exception_on_overflow=False) data_in = audioop.ratecv(data_in,2,1,AUDIO_SAMPLE_RATE_RX, MODEM_SAMPLE_RATE, None) data_in = data_in[0].rstrip(b'\x00') else: data_in = sys.stdin.buffer.read(BUF_SIZE) datac0_buffer += data_in datac1_buffer += data_in datac3_buffer += data_in datac0_nin = codec2.api.freedv_nin(datac0_freedv) * 2 if len(datac0_buffer) >= (datac0_nin): datac0_audio = datac0_buffer[:datac0_nin] datac0_buffer = datac0_buffer[datac0_nin:] nbytes = codec2.api.freedv_rawdatarx(datac0_freedv, datac0_bytes_out, datac0_audio) # demodulate audio if nbytes == datac0_bytes_per_frame: rx_total_frames_datac0 = rx_total_frames_datac0 + 1 rx_frames_datac0 = rx_frames_datac0 + 1 if rx_frames_datac0 == N_FRAMES_PER_BURST: rx_frames_datac0 = 0 rx_bursts_datac0 = rx_bursts_datac0 + 1 datac1_nin = codec2.api.freedv_nin(datac1_freedv) * 2 if len(datac1_buffer) >= (datac1_nin): datac1_audio = datac1_buffer[:datac1_nin] datac1_buffer = datac1_buffer[datac1_nin:] nbytes = codec2.api.freedv_rawdatarx(datac1_freedv, datac1_bytes_out, datac1_audio) # demodulate audio if nbytes == datac1_bytes_per_frame: rx_total_frames_datac1 = rx_total_frames_datac1 + 1 rx_frames_datac1 = rx_frames_datac1 + 1 if rx_frames_datac1 == N_FRAMES_PER_BURST: rx_frames_datac1 = 0 rx_bursts_datac1 = rx_bursts_datac1 + 1 datac3_nin = codec2.api.freedv_nin(datac3_freedv) * 2 if len(datac3_buffer) >= (datac3_nin): datac3_audio = datac3_buffer[:datac3_nin] datac3_buffer = datac3_buffer[datac3_nin:] nbytes = codec2.api.freedv_rawdatarx(datac3_freedv, datac3_bytes_out, datac3_audio) # demodulate audio if nbytes == datac3_bytes_per_frame: rx_total_frames_datac3 = rx_total_frames_datac3 + 1 rx_frames_datac3 = rx_frames_datac3 + 1 if rx_frames_datac3 == N_FRAMES_PER_BURST: rx_frames_datac3 = 0 rx_bursts_datac3 = rx_bursts_datac3 + 1 if rx_bursts_datac0 == N_BURSTS and rx_bursts_datac1 == N_BURSTS and rx_bursts_datac3 == N_BURSTS: receive = False # INFO IF WE REACHED TIMEOUT if time.time() > timeout: print(f"TIMEOUT REACHED", file=sys.stderr) print(f"DATAC0: {rx_bursts_datac0}/{rx_total_frames_datac0} DATAC1: {rx_bursts_datac1}/{rx_total_frames_datac1} DATAC3: {rx_bursts_datac3}/{rx_total_frames_datac3}", file=sys.stderr)