Crash_Override/MMDVMHost-Private
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Process FEC and DTMF on Voice frames followed by Sync frame

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Rather than skipping FEC recalculation and DTMF blanking on Voice
frames that do not have a corresponding mini-header (i.e. Voice frames
followed by a Sync frame), set aside the frame's data.  The data is
processed and submitted to the modem/network during the next
iteration, once the presence of DV Fast Data can be determined.
This commit is contained in:
Tim Stewart 2020-11-29 16:26:32 -05:00
parent 8874d1262b
commit efe9b3d459
1 changed files with 37 additions and 10 deletions
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47
DStarControl.cpp
View file

@ -149,7 +149,9 @@ unsigned int CDStarControl::maybeFixupVoiceFrame(
unsigned char mini_header_type = mini_header & DSTAR_SLOW_DATA_TYPE_MASK;
if (n == 0U) {
LogMessage("%s frame %u: FEC regeneration disabled for first frame", log_prefix, n);
LogMessage("%s frame %u: delaying FEC and DTMF processing of first voice frame", log_prefix, n);
::memcpy(voice_sync_data, data, MODEM_DATA_LEN);
*voice_sync_data_len = len;
} else if ((n % 2U != 0U) &&
((mini_header_type == DSTAR_SLOW_DATA_TYPE_FASTDATA01) ||
(mini_header_type == DSTAR_SLOW_DATA_TYPE_FASTDATA16))) {
@ -163,14 +165,25 @@ unsigned int CDStarControl::maybeFixupVoiceFrame(
*skip_dtmf_blanking_frames = FAST_DATA_BEEP_GRACE_FRAMES;
LogMessage("%s frame %u: found fast data (cont.)", log_prefix, n);
} else {
errors = m_fec.regenerateDStar(data + offset);
if (n == 1U) {
LogMessage("%s frame 0: *** REGENERATING FEC ***", log_prefix);
errors += m_fec.regenerateDStar(voice_sync_data + offset);
}
LogMessage("%s frame %u: *** REGENERATING FEC ***", log_prefix, n);
errors += m_fec.regenerateDStar(data + offset);
if (blank_dtmf && (*skip_dtmf_blanking_frames > 0U)) {
(*skip_dtmf_blanking_frames)--;
if (n == 1U)
LogMessage("%s frame 0: *** Not BLANKING DTMF (left to skip: %u) ***",
log_prefix, *skip_dtmf_blanking_frames);
LogMessage("%s frame %u: *** Not BLANKING DTMF (left to skip: %u) ***",
log_prefix, n, *skip_dtmf_blanking_frames);
} else if (blank_dtmf && (*skip_dtmf_blanking_frames == 0U)) {
if (n == 1U) {
LogMessage("%s frame 0: *** BLANKING DTMF ***", log_prefix);
blankDTMF(voice_sync_data + offset);
}
LogMessage("%s frame %u: *** BLANKING DTMF ***", log_prefix, n);
blankDTMF(data + offset);
}
@ -439,11 +452,19 @@ bool CDStarControl::writeModem(unsigned char *data, unsigned int len)
m_rfBits += 48U;
m_rfFrames++;
if (m_net)
writeNetworkDataRF(data, errors, false);
if (m_net) {
if (m_rfN == 1U)
writeNetworkDataRF(m_rfVoiceSyncData, 0U, false);
if (m_rfN >= 1U)
writeNetworkDataRF(data, errors, false);
}
if (m_duplex)
writeQueueDataRF(data);
if (m_duplex) {
if (m_rfN == 1U)
writeQueueDataRF(m_rfVoiceSyncData);
if (m_rfN >= 1U)
writeQueueDataRF(data);
}
m_rfN = (m_rfN + 1U) % 21U;
} else if (m_rfState == RS_RF_LATE_ENTRY) {
@ -753,13 +774,13 @@ void CDStarControl::writeNetwork()
unsigned char n = data[1U];
data[1U] = TAG_DATA;
unsigned int errors = 0U;
if (!m_netHeader.isDataPacket())
errors = maybeFixupVoiceFrame(data, length, 2U, "Net", n, true, m_netVoiceSyncData, &m_netVoiceSyncDataLen,
&m_netNextFrameIsFastData, &m_netSkipDTMFBlankingFrames);
data[1U] = TAG_DATA;
// Insert silence and reject if in the past
bool ret = insertSilence(data + 1U, n);
if (!ret)
@ -778,9 +799,15 @@ void CDStarControl::writeNetwork()
m_netFrames++;
#if defined(DUMP_DSTAR)
writeFile(data + 1U, length - 1U);
if (n == 1U)
writeFile(m_netVoiceSyncData + 1U, m_netVoiceSyncDataLen - 1U);
if (n >= 1U)
writeFile(data + 1U, length - 1U);
#endif
writeQueueDataNet(data + 1U);
if (n == 1U)
writeQueueDataNet(m_netVoiceSyncData + 1U);
if (n >= 1U)
writeQueueDataNet(data + 1U);
} else {
CUtils::dump("D-Star, unknown data from network", data, DSTAR_FRAME_LENGTH_BYTES + 1U);
}