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https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
fine grained tests at 48000 Hz, currently won't work as resampler commented out of test_tx.py and test_rx.py
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8a93ec4896
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8c9f1c5761
7 changed files with 119 additions and 30 deletions
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@ -22,8 +22,8 @@ import codec2
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#--------------------------------------------GET PARAMETER INPUTS
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parser = argparse.ArgumentParser(description='Simons TEST TNC')
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parser.add_argument('--bursts', dest="N_BURSTS", default=0, type=int)
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parser.add_argument('--framesperburst', dest="N_FRAMES_PER_BURST", default=0, type=int)
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parser.add_argument('--bursts', dest="N_BURSTS", default=1, type=int)
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parser.add_argument('--framesperburst', dest="N_FRAMES_PER_BURST", default=1, type=int)
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parser.add_argument('--mode', dest="FREEDV_MODE", type=str, choices=['datac0', 'datac1', 'datac3'])
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parser.add_argument('--audiodev', dest="AUDIO_INPUT_DEVICE", default=-1, type=int,
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help="audio device number to use, use -2 to automatically select a loopback device")
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@ -49,7 +49,7 @@ TIMEOUT = args.TIMEOUT
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# AUDIO PARAMETERS
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AUDIO_FRAMES_PER_BUFFER = 2048 # seems to be best if >=1024
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MODEM_SAMPLE_RATE = codec2.api.FREEDV_FS_8000
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AUDIO_SAMPLE_RATE_RX = 48000
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AUDIO_SAMPLE_RATE_RX = 8000
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assert (AUDIO_SAMPLE_RATE_RX % MODEM_SAMPLE_RATE) == 0
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# check if we want to use an audio device then do an pyaudio init
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@ -104,13 +104,14 @@ receive = True
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audio_buffer = bytes()
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nbytes = 0
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BUF_SIZE = 160
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ratecv_state = None
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while receive and time.time() < timeout:
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if AUDIO_INPUT_DEVICE != -1:
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data_in = stream_rx.read(AUDIO_FRAMES_PER_BUFFER, exception_on_overflow = False)
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data_in = audioop.ratecv(data_in,2,1,AUDIO_SAMPLE_RATE_RX, MODEM_SAMPLE_RATE, None)
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audio_buffer += data_in[0]
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#data_in, ratecv_state = audioop.ratecv(data_in,2,1,AUDIO_SAMPLE_RATE_RX, MODEM_SAMPLE_RATE, ratecv_state)
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audio_buffer += data_in
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else:
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@ -118,16 +119,17 @@ while receive and time.time() < timeout:
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nin = codec2.api.freedv_nin(freedv) * 2
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rx_status = codec2.api.freedv_get_rx_status(freedv)
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if DEBUGGING_MODE:
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state = codec2.api.rx_sync_flags_to_text[rx_status]
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print(f"NIN: {nin} STATE: {state} BUFFER: {len(audio_buffer)}", file=sys.stderr)
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#decode as soon as we filled the audio buffer
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if len(audio_buffer) >= (nin):
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nbytes = codec2.api.freedv_rawdatarx(freedv, bytes_out, audio_buffer[:nin]) # demodulate audio
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audio_buffer = audio_buffer[nin:]
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rx_status = codec2.api.freedv_get_rx_status(freedv)
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if rx_status & codec2.api.FREEDV_RX_BIT_ERRORS:
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rx_errors = rx_errors + 1
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if DEBUGGING_MODE:
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state = codec2.api.rx_sync_flags_to_text[rx_status]
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print(f"NIN: {nin} RX_STATUS: {state} BUFFER: {len(audio_buffer)}", file=sys.stderr)
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total_n_bytes = total_n_bytes + nbytes
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@ -139,9 +141,6 @@ while receive and time.time() < timeout:
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rx_frames = 0
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rx_bursts = rx_bursts + 1
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if rx_status & codec2.api.FREEDV_RX_BIT_ERRORS:
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rx_errors = rx_errors + 1
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if rx_bursts == N_BURSTS:
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receive = False
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@ -17,9 +17,10 @@ import codec2
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# GET PARAMETER INPUTS
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parser = argparse.ArgumentParser(description='Simons TEST TNC')
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parser.add_argument('--bursts', dest="N_BURSTS", default=0, type=int)
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parser.add_argument('--framesperburst', dest="N_FRAMES_PER_BURST", default=0, type=int)
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parser.add_argument('--delay', dest="DELAY_BETWEEN_BURSTS", default=0, type=int)
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parser.add_argument('--bursts', dest="N_BURSTS", default=1, type=int)
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parser.add_argument('--framesperburst', dest="N_FRAMES_PER_BURST", default=1, type=int)
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parser.add_argument('--delay', dest="DELAY_BETWEEN_BURSTS", default=500, type=int,
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help="delay between bursts in ms")
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parser.add_argument('--mode', dest="FREEDV_MODE", type=str, choices=['datac0', 'datac1', 'datac3'])
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parser.add_argument('--audiodev', dest="AUDIO_OUTPUT_DEVICE", default=-1, type=int,
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help="audio output device number to use, use -2 to automatically select a loopback device")
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@ -44,7 +45,7 @@ MODE = codec2.FREEDV_MODE[args.FREEDV_MODE].value
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# AUDIO PARAMETERS
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AUDIO_FRAMES_PER_BUFFER = 2048
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MODEM_SAMPLE_RATE = codec2.api.FREEDV_FS_8000
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AUDIO_SAMPLE_RATE_TX = 48000
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AUDIO_SAMPLE_RATE_TX = 8000
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assert (AUDIO_SAMPLE_RATE_TX % MODEM_SAMPLE_RATE) == 0
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# check if we want to use an audio device then do an pyaudio init
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@ -136,7 +137,7 @@ for i in range(1,N_BURSTS+1):
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txbuffer += bytes(mod_out_postamble)
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# append a delay between bursts as audio silence
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samples_delay = int(MODEM_SAMPLE_RATE*DELAY_BETWEEN_BURSTS)
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samples_delay = int(MODEM_SAMPLE_RATE*DELAY_BETWEEN_BURSTS*2)
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mod_out_silence = create_string_buffer(samples_delay)
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txbuffer += bytes(mod_out_silence)
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print(f"samples_delay: {samples_delay} DELAY_BETWEEN_BURSTS: {DELAY_BETWEEN_BURSTS}", file=sys.stderr)
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@ -145,8 +146,8 @@ for i in range(1,N_BURSTS+1):
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if AUDIO_OUTPUT_DEVICE != -1:
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# sample rate conversion from 8000Hz to 48000Hz
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audio = audioop.ratecv(txbuffer,2,1,MODEM_SAMPLE_RATE, AUDIO_SAMPLE_RATE_TX, None)
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stream_tx.write(audio[0])
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#audio = audioop.ratecv(txbuffer,2,1,MODEM_SAMPLE_RATE, AUDIO_SAMPLE_RATE_TX, None)
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stream_tx.write(txbuffer)
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else:
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# print data to terminal for piping the output to other programs
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@ -1,6 +1,6 @@
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#!/bin/bash -x
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# Run a test using the virtual sound cards, but sound I/O performed by aplay/arecord, and
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# we pipe to Python utilities
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# Run a test using the virtual sound cards, sound I/O performed by aplay/arecord at
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# Fs=8000 Hz, and we pipe to Python utilities
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function check_alsa_loopback {
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lsmod | grep snd_aloop >> /dev/null
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31
test/001_highsnr_stdio_audio/test_virtual1a.sh
Executable file
31
test/001_highsnr_stdio_audio/test_virtual1a.sh
Executable file
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@ -0,0 +1,31 @@
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#!/bin/bash -x
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# Run a test using the virtual sound cards, tx sound I/O performed by aplay
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# and arecord at Fs=48000Hz, we pipe to Python utilities
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function check_alsa_loopback {
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lsmod | grep snd_aloop >> /dev/null
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if [ $? -eq 1 ]; then
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echo "ALSA loopback device not present. Please install with:"
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echo
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echo " sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2"
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exit 1
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fi
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}
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check_alsa_loopback
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RX_LOG=$(mktemp)
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MAX_RUN_TIME=2600
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# make sure all child processes are killed when we exit
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trap 'jobs -p | xargs -r kill' EXIT
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arecord -r 48000 --device="plughw:CARD=CHAT1,DEV=0" -f S16_LE -d $MAX_RUN_TIME | \
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sox -t .s16 -r 48000 -c 1 - -t .s16 -r 8000 -c 1 - | \
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python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --debug &
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rx_pid=$!
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sleep 1
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python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 500 | \
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sox -t .s16 -r 8000 -c 1 - -t .s16 -r 48000 -c 1 - | \
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aplay -r 48000 --device="plughw:CARD=CHAT1,DEV=1" -f S16_LE
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wait ${rx_pid}
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29
test/001_highsnr_stdio_audio/test_virtual1b.sh
Executable file
29
test/001_highsnr_stdio_audio/test_virtual1b.sh
Executable file
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@ -0,0 +1,29 @@
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#!/bin/bash -x
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# Run a test using the virtual sound cards, tx sound I/O performed by Python,
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# rx using arecord, Fs=48000Hz
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function check_alsa_loopback {
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lsmod | grep snd_aloop >> /dev/null
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if [ $? -eq 1 ]; then
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echo "ALSA loopback device not present. Please install with:"
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echo
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echo " sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2"
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exit 1
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fi
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}
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check_alsa_loopback
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RX_LOG=$(mktemp)
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MAX_RUN_TIME=2600
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# make sure all child processes are killed when we exit
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trap 'jobs -p | xargs -r kill' EXIT
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arecord -r 48000 --device="plughw:CARD=CHAT1,DEV=0" -f S16_LE -d $MAX_RUN_TIME | \
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sox -t .s16 -r 48000 -c 1 - -t .s16 -r 8000 -c 1 - | \
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python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --debug &
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rx_pid=$!
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sleep 1
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python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 500 --audiodev -2
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wait ${rx_pid}
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test/001_highsnr_stdio_audio/test_virtual1c.sh
Executable file
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test/001_highsnr_stdio_audio/test_virtual1c.sh
Executable file
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#!/bin/bash -x
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# Run a test using the virtual sound cards, tx sound I/O performed by aplay,
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# rx sound I/O by Python, Fs=48000Hz.
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function check_alsa_loopback {
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lsmod | grep snd_aloop >> /dev/null
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if [ $? -eq 1 ]; then
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echo "ALSA loopback device not present. Please install with:"
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echo
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echo " sudo modprobe snd-aloop index=1,2 enable=1,1 pcm_substreams=1,1 id=CHAT1,CHAT2"
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exit 1
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fi
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}
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check_alsa_loopback
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RX_LOG=$(mktemp)
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MAX_RUN_TIME=2600
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# make sure all child processes are killed when we exit
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trap 'jobs -p | xargs -r kill' EXIT
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python3 test_rx.py --mode datac0 --frames 2 --bursts 5 --debug --audiodev -2 &
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rx_pid=$!
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sleep 1
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python3 test_tx.py --mode datac0 --frames 2 --bursts 5 --delay 500 | \
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sox -t .s16 -r 8000 -c 1 - -t .s16 -r 48000 -c 1 - | \
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aplay -r 48000 --device="plughw:CARD=CHAT1,DEV=1" -f S16_LE
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wait ${rx_pid}
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@ -1,5 +1,5 @@
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#!/bin/bash -x
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# Run a test using the virtual sound cards
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# Run a test using the virtual sound cards, Python audio I/O
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function check_alsa_loopback {
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lsmod | grep snd_aloop >> /dev/null
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