MMDVM/MMDVMHost
1
0
Fork 0
mirror of https://github.com/g4klx/MMDVMHost synced 2025-12-20 22:45:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

Regenerate more NXDN voice data elements.

Browse Source
This commit is contained in:
Jonathan Naylor
2018-02-05 21:07:06 +00:00
parent 7737659729
commit bdc35d02bd
4 changed files with 36 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
NXDNControl.cpp
View File

@@ -158,16 +158,16 @@ bool CNXDNControl::writeModem(unsigned char *data, unsigned int len)
if (usc == NXDN_LICH_USC_UDCH)
ret = processData(option, data);
else
ret = processVoice(usc, option, data);
ret = processVoice(valid, usc, option, data);
return ret;
}
bool CNXDNControl::processVoice(unsigned char usc, unsigned char option, unsigned char *data)
bool CNXDNControl::processVoice(bool validLICH, unsigned char usc, unsigned char option, unsigned char *data)
{
CNXDNSACCH sacch;
bool valid = sacch.decode(data + 2U);
if (valid) {
bool validSACCH = sacch.decode(data + 2U);
if (validSACCH) {
unsigned char ran = sacch.getRAN();
if (ran != m_ran && ran != 0U)
return false;
@@ -175,7 +175,21 @@ bool CNXDNControl::processVoice(unsigned char usc, unsigned char option, unsigne
return false;
}
// XXX Reconstruct invalid LICH
// Reconstruct invalid LICH
if (!validLICH) {
if (usc == NXDN_LICH_USC_SACCH_NS) {
option = NXDN_LICH_STEAL_NONE;
usc = NXDN_LICH_USC_SACCH_SS;
} else {
if (option == NXDN_LICH_STEAL_FACCH)
option = NXDN_LICH_STEAL_NONE;
else if (option == NXDN_LICH_STEAL_NONE)
option = NXDN_LICH_STEAL_FACCH;
}
m_rfLastLICH.setFCT(usc);
m_rfLastLICH.setOption(option);
}
if (usc == NXDN_LICH_USC_SACCH_NS) {
// The SACCH on a non-superblock frame is usually an idle and not interesting apart from the RAN.
@@ -425,10 +439,16 @@ bool CNXDNControl::processVoice(unsigned char usc, unsigned char option, unsigne
lich.setDirection(m_remoteGateway ? NXDN_LICH_DIRECTION_INBOUND : NXDN_LICH_DIRECTION_OUTBOUND);
lich.encode(data + 2U);
// XXX Regenerate SACCH here
// Regenerate SACCH if it's valid
CNXDNSACCH sacch;
bool validSACCH = sacch.decode(data + 2U);
if (validSACCH) {
sacch.setRAN(m_ran);
sacch.encode(data + 2U);
}
// Regenerate the audio and interpret the FACCH1 data
unsigned char voiceMode = m_rfLayer3.getCallOptions() & 0x07U;
unsigned char voiceMode = m_rfLayer3.getVoiceMode();
if (option == NXDN_LICH_STEAL_NONE) {
CAMBEFEC ambe;
@@ -531,11 +551,11 @@ bool CNXDNControl::processVoice(unsigned char usc, unsigned char option, unsigne
bool CNXDNControl::processData(unsigned char option, unsigned char *data)
{
CNXDNUDCH udch;
bool valid = udch.decode(data + 2U);
if (m_rfState == RS_RF_LISTENING && !valid)
bool validUDCH = udch.decode(data + 2U);
if (m_rfState == RS_RF_LISTENING && !validUDCH)
return false;
if (valid) {
if (validUDCH) {
unsigned char ran = udch.getRAN();
if (ran != m_ran && ran != 0U)
return false;
@@ -593,7 +613,7 @@ bool CNXDNControl::processData(unsigned char option, unsigned char *data)
lich.setDirection(m_remoteGateway ? NXDN_LICH_DIRECTION_INBOUND : NXDN_LICH_DIRECTION_OUTBOUND);
lich.encode(data + 2U);
if (valid) {
if (validUDCH) {
udch.setRAN(m_ran);
udch.encode(data + 2U);
}
@@ -609,7 +629,7 @@ bool CNXDNControl::processData(unsigned char option, unsigned char *data)
writeFile(data + 2U);
#endif
if (valid) {
if (validUDCH) {
unsigned char type = layer3.getMessageType();
if (type == NXDN_MESSAGE_TYPE_TX_REL) {
LogMessage("NXDN, ended RF data transmission");