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reuse codec2 mode init for transmission

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This commit is contained in:
DJ2LS 2022-12-15 13:45:57 +01:00
parent 179f4f7265
commit db9c5b60b9
1 changed files with 31 additions and 6 deletions
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37
tnc/modem.py
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@ -148,6 +148,10 @@ class RF:
codec2.api.FREEDV_MODE_FSK_LDPC_1_ADV
)
# INIT TX MODES
self.freedv_datac0_tx = open_codec2_instance(14)
self.freedv_datac1_tx = open_codec2_instance(10)
self.freedv_datac3_tx = open_codec2_instance(12)
# --------------------------------------------CREATE PYAUDIO INSTANCE
if not TESTMODE:
try:
@ -402,7 +406,28 @@ class RF:
frames:
"""
# self.log.debug("[MDM] transmit", mode=mode)
"""
sig0 = 14
sig1 = 14
datac0 = 14
datac1 = 10
datac3 = 12
fsk_ldpc = 9
fsk_ldpc_0 = 200
fsk_ldpc_1 = 201
"""
if mode == int(14):
freedv = self.freedv_datac0_tx
elif mode == int(14):
freedv = self.freedv_datac0_tx
elif mode == int(10):
freedv = self.freedv_datac1_tx
elif mode == int(12):
freedv = self.freedv_datac3_tx
else:
return False
static.TRANSMITTING = True
start_of_transmission = time.time()
# Toggle ptt early to save some time and send ptt state via socket
@ -413,7 +438,6 @@ class RF:
# Open codec2 instance
self.MODE = mode
freedv = open_codec2_instance(self.MODE)
# Get number of bytes per frame for mode
bytes_per_frame = int(codec2.api.freedv_get_bits_per_modem_frame(freedv) / 8)
@ -506,8 +530,10 @@ class RF:
txbuffer_48k = self.resampler.resample8_to_48(x)
# Explicitly lock our usage of mod_out_queue if needed
# Deactivated for testing purposes
self.mod_out_locked = False
# This could avoid audio problems on slower CPU
# we will fill our modout list with all data, then start
# processing it in audio callback
self.mod_out_locked = True
# -------------------------------
chunk_length = self.AUDIO_FRAMES_PER_BUFFER_TX # 4800
@ -525,7 +551,7 @@ class RF:
self.modoutqueue.append(c)
# Release our mod_out_lock so we can use the queue
# Release our mod_out_lock, so we can use the queue
self.mod_out_locked = False
while self.modoutqueue:
@ -541,7 +567,6 @@ class RF:
# After processing, set the locking state back to true to be prepared for next transmission
self.mod_out_locked = True
self.c_lib.freedv_close(freedv)
self.modem_transmit_queue.task_done()
static.TRANSMITTING = False
threading.Event().set()