bool SpanDSP::FaxTerminal::Serve(socket_t fd, sockaddr_in & address, bool listen)
{
int port;
{
sockaddr_in local;
socklen_t len = sizeof(local);
if (getsockname(fd, (sockaddr *)&local, &len) != 0) {
cerr << progmode << ": cannot get local port number" << endl;
return false;
}
port = ntohs(local.sin_port);
if (verbose)
cout << progmode << ": local fax port = " << port << endl;
}
// set socket into non-blocking mode
int cmd = 1;
if (__socket_ioctl(fd, FIONBIO, &cmd) != 0) {
cerr << progmode << ": cannot set socket into non-blocking mode" << endl;
return false;
}
AdaptiveDelay delay;
#if WRITE_PCM_FILES
int outFile;
int inFile;
{
char fn[1024];
strcpy(fn, "fax_audio_out_");
strcat(fn, progmode);
strcat(fn, ".pcm");
outFile = _open(fn, _O_BINARY | _O_CREAT | _O_TRUNC | _O_WRONLY, _S_IREAD | _S_IWRITE);
if (outFile < 0) {
cerr << progmode << ": cannot open " << fn << endl;
}
else
{
cerr << progmode << ": opened " << fn << endl;
}
strcpy(fn, "fax_audio_in_");
strcat(fn, progmode);
strcat(fn, ".pcm");
inFile = _open(fn, _O_BINARY | _O_CREAT | _O_TRUNC | _O_WRONLY, _S_IREAD | _S_IWRITE);
if (outFile < 0) {
cerr << progmode << ": cannot open " << fn << endl;
}
else
{
cerr << progmode << ": opened " << fn << endl;
}
}
#endif
while (!finished) {
delay.Delay(20);
// get audio data from terminal and send to socket
{
short data[SAMPLES_PER_CHUNK];
int len = GetPCMData(data, sizeof(data)/2) * 2;
if (!listen) {
#if WRITE_PCM_FILES
if (outFile >= 0) {
if (write(outFile, data, len) < len) {
cerr << progmode << ": cannot write output PCM data to file" << endl;
outFile = -1;
}
}
#endif
if (__socket_sendto(fd, data, len, 0, (sockaddr *)&address, sizeof(address)) != len) {
if ( __socket_getlasterror() == ENOENT)
cerr << progmode << ": audio write socket not ready" << endl;
else {
cerr << progmode << ": write to audio socket failed\n"; __socket_error(cerr) << endl;
break;
}
} else if (verbose && firstAudioWrite) {
cout << progmode << ": first send from audio socket" << endl;
firstAudioWrite = false;
}
}
}
// get audio data from the fax socket and send to the terminal
int len;
short data[750];
if (!ReadAudioPacket(fd, data, len, address, listen, verbose))
break;
if (len > 0) {
#if WRITE_PCM_FILES
if (inFile >= 0) {
if (write(inFile, data, len) < len) {
cerr << progmode << ": cannot write input PCM data to file" << endl;
outFile = -1;
}
}
#endif
if (!PutPCMData(data, len/2)) {
cerr << progmode << ": write to terminal failed" << endl;
break;
}
}
}
cout << progmode << ": finished." << endl;
// keep sending silence until the UDP socket closed
if (SendFiller()) {
short data[SAMPLES_PER_CHUNK];
memset(&data, 0, sizeof(data));
int i = 100;
while (i-- > 0) {
if (__socket_sendto(fd, data, sizeof(data), 0, (sockaddr *)&address, sizeof(address)) <= 0)
break;
delay.Delay(20);
}
}
return true;
}
bool SpanDSP::T38Terminal::Serve(socket_t fd, sockaddr_in & address, bool listen)
{
{
sockaddr_in local;
socklen_t len = sizeof(local);
if (getsockname(fd, (sockaddr *)&local, &len) != 0) {
cerr << progmode << ": cannot get local port number" << endl;
return false;
}
}
if (!listen) {
txFd = fd;
memcpy(&txAddr, &address, sizeof(txAddr));
}
// set socket into non-blocking mode
int cmd = 1;
if (__socket_ioctl(fd, FIONBIO, &cmd) != 0) {
cerr << progmode << ": cannot set socket into non-blocking mode" << endl;
return false;
}
int done = 0;
#ifdef USE_PACING
int started = 0;
#else
AdaptiveDelay delay;
#endif
while (!finished) {
done = t38_terminal_send_timeout(t38TerminalState, SAMPLES_PER_CHUNK);
SpanDSP::T38Terminal::T38Packet pkt;
#ifndef USE_PACING
delay.Delay(20);
if (!ReceiveT38Packet(fd, pkt, address, listen)) {
finished = true;
break;
}
if (pkt.size() != 0)
QueuePacket(pkt);
if (finished || done)
break;
#else
int ret;
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
timeval t;
if (!started) {
t.tv_sec = 60;
t.tv_usec = 0;
}
else
{
t.tv_sec = 0;
t.tv_usec = 30000;
}
ret = select(fd+1, &rfds, NULL, NULL, &t);
}
// read incoming packets
if (!started) {
if (ret <= 0 || !ReceiveT38Packet(fd, pkt, address, listen))
finished = true;
started = 1;
}
else if (ret != 0) {
if (ret < 0 || !ReceiveT38Packet(fd, pkt, address, listen)) {
finished = true;
break;
} else if (pkt.size() != 0)
QueuePacket(pkt);
}
#endif
}
cout << progmode << ": finished." << endl;
return true;
}
bool SpanDSP::T38Gateway::Serve(socket_t fax, sockaddr_in & faxAddress, socket_t t38, sockaddr_in & t38Address, bool listenFlag)
{
bool faxListen, t38Listen;
faxListen = t38Listen = listenFlag;
{
sockaddr_in local;
socklen_t len = sizeof(local);
if (getsockname(fax, (sockaddr *)&local, &len) != 0) {
cerr << progmode << ": cannot get local fax port number" << endl;
return false;
}
if (verbose)
cout << progmode << ": local fax port = " << ntohs(local.sin_port) << endl;
}
{
sockaddr_in local;
socklen_t len = sizeof(local);
if (getsockname(t38, (sockaddr *)&local, &len) != 0) {
cerr << progmode << ": cannot get local t38 port number" << endl;
return false;
}
if (verbose)
cout << progmode << ": local t38 port = " << ntohs(local.sin_port) << endl;
}
// set sockets into non-blocking mode
int cmd = 1;
if (__socket_ioctl(fax, FIONBIO, &cmd) != 0) {
cerr << progmode << ": cannot set fax socket into non-blocking mode" << endl;
return false;
}
// set socket into non-blocking mode
cmd = 1;
if (__socket_ioctl(t38, FIONBIO, &cmd) != 0) {
cerr << progmode << ": cannot set t38 socket into non-blocking mode" << endl;
return false;
}
if (!listenFlag) {
txFd = t38;
memcpy(&txAddr, &t38Address, sizeof(txAddr));
}
#if WRITE_PCM_FILES
int outFile;
int inFile;
{
char fn[1024];
strcpy(fn, "gw_audio_out_");
strcat(fn, progmode);
strcat(fn, ".pcm");
outFile = _open(fn, _O_BINARY | _O_CREAT | _O_TRUNC | _O_WRONLY, _S_IREAD | _S_IWRITE);
if (outFile < 0) {
cerr << progmode << ": cannot open " << fn << endl;
}
else
{
cerr << progmode << ": opened " << fn << endl;
}
strcpy(fn, "gw_audio_in_");
strcat(fn, progmode);
strcat(fn, ".pcm");
inFile = _open(fn, _O_BINARY | _O_CREAT | _O_TRUNC | _O_WRONLY, _S_IREAD | _S_IWRITE);
if (outFile < 0) {
cerr << progmode << ": cannot open " << fn << endl;
}
else
{
cerr << progmode << ": opened " << fn << endl;
}
}
#endif
AdaptiveDelay delay;
while (!finished) {
delay.Delay(20);
// get audio data from the fax socket and give to the gateway
{
int len;
short data[750];
if (ReadAudioPacket(fax, data, len, faxAddress, faxListen, verbose)) {
#if WRITE_PCM_FILES
if (inFile >= 0) {
if (write(inFile, data, len) < len) {
cerr << progmode << ": cannot write input PCM data to file" << endl;
outFile = -1;
}
}
#endif
if (len > 0) {
if (!PutPCMData(data, len/2)) {
cerr << progmode << ": write to terminal failed" << endl;
break;
}
}
}
}
// get audio data from the gateway and send to the fax socket
{
short data[SAMPLES_PER_CHUNK];
unsigned len = GetPCMData(data, sizeof(data)/2) * 2;
#if _WIN32
if (!faxListen && (__socket_sendto(fax, data, len, 0, (sockaddr *)&faxAddress, sizeof(faxAddress)) <= 0)) {
#else
if (__socket_write(fax, data, len) <= 0) {
#endif
if ( __socket_getlasterror() == ENOENT)
cerr << progmode << ": fax write socket not ready" << endl;
else {
cerr << progmode << ": write to fax socket failed\n"; __socket_error(cerr) << endl;
break;
}
}
if (verbose && firstAudioWrite) {
cout << progmode << ": first send from audio socket " << len << endl;
firstAudioWrite = false;
}
#if WRITE_PCM_FILES
if (outFile >= 0) {
if (write(outFile, data, len) < len) {
cerr << progmode << ": cannot write output PCM data to file" << endl;
outFile = -1;
}
}
#endif
}
if (finished) {
if (verbose)
cout << progmode << ": finished." << endl;
break;
}
// read any T38 packets received and send to the gateway
T38Packet pkt;
for (;;) {
if (!ReceiveT38Packet(t38, pkt, t38Address, t38Listen)) {
cerr << progmode << ": receive failed" << endl;
finished = true;
break;
}
if (pkt.size() == 0)
break;
QueuePacket(pkt);
}
}
cout << progmode << ": finished." << endl;
// keep sending silence until the UDP socket closed
{
short data[SAMPLES_PER_CHUNK];
memset(&data, 0, sizeof(data));
int i = 100;
while (i-- > 0) {
if (__socket_sendto(fax, data, sizeof(data), 0, (sockaddr *)&faxAddress, sizeof(faxAddress)) <= 0)
break;
delay.Delay(20);
}
}
return true;
}
