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SoapyTCPRemote.cpp
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SoapyTCPRemote.cpp
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// SoapyTCPRemote.cpp
// Copyright (c) 2021 Phil Ashby
// SPDX-License-Identifier: BSL-1.0
#include "SoapyTCPRemote.hpp"
#include "SoapyLog.hpp"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <netdb.h>
// declare the contents of a Stream object for ourselves
class SoapySDR::Stream
{
public:
int netSock;
int remoteId;
int numChans;
size_t fSize;
bool running;
};
SoapyTCPRemote::SoapyTCPRemote(const std::string &address, const std::string &port, const std::string &remdriver, const std::string &remargs) :
remoteAddress(address),
remotePort(port),
remoteDriver(remdriver),
remoteArgs(remargs)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::<cons>(%s,%s,%s,%s)",
address.c_str(), port.c_str(), remdriver.c_str(), remargs.c_str());
int status = connectLogStream(detectLogLevel());
if (status<0)
throw std::runtime_error("unable to connect log stream");
int sock = connect();
if (sock<0)
throw std::runtime_error("unable to connect to remote");
rpc = new SoapyRPC(sock);
status = loadRemoteDriver();
if (status<0)
throw std::runtime_error("unable to load remote driver");
}
SoapyTCPRemote::~SoapyTCPRemote()
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::<dest>");
if (rpc) {
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_DROP_RPC);
delete rpc;
rpc = nullptr;
}
if (log) {
// writing to this stream terminates it via the remote end
write(fileno(log), "\n", 1);
logThread.join();
}
}
// private connector method
int SoapyTCPRemote::connect() const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::connect()");
// create new socket
int sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0) {
SoapySDR_logf(SOAPY_SDR_ERROR, "Unable to create socket: %s", strerror(errno));
return -1;
}
// resolve address (or parse)
struct addrinfo *res = nullptr;
if (getaddrinfo(remoteAddress.c_str(), remotePort.c_str(), nullptr, &res)) {
SoapySDR_logf(SOAPY_SDR_ERROR, "Failed to resolve address/port: %s/%s: %s",
remoteAddress.c_str(), remotePort.c_str(), strerror(errno));
close(sock);
return -1;
}
// attempt connection to remote server
if (::connect(sock, res->ai_addr, res->ai_addrlen)) {
SoapySDR_logf(SOAPY_SDR_ERROR, "Failed to connect to address/port: %s/%s: %s",
remoteAddress.c_str(), remotePort.c_str(), strerror(errno));
freeaddrinfo(res);
close(sock);
return -1;
}
freeaddrinfo(res);
SoapySDR_logf(SOAPY_SDR_DEBUG, "SoapyTCPRemote: connected: %s/%s",
remoteAddress.c_str(), remotePort.c_str());
return sock;
}
int SoapyTCPRemote::loadRemoteDriver() const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::loadRemoteDriver()");
// identify this connection as an RPC stream load the remote driver
rpc->writeInteger(TCPREMOTE_RPC_LOAD);
rpc->writeString(remoteDriver);
rpc->writeString(remoteArgs);
return rpc->readInteger();
}
int SoapyTCPRemote::connectLogStream(SoapySDRLogLevel level)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::connectLogStream");
// first connect a new socket
int sock = connect();
if (sock<0)
return sock;
log = fdopen(sock, "r+");
if (!log) {
SoapySDR_logf(SOAPY_SDR_ERROR, "fdopen() log stream: %s", strerror(errno));
return -1;
}
setlinebuf(log);
// identify this as the log stream, set level, obtain remote handle
fprintf(log, "%d\n%d\n", TCPREMOTE_LOG_STREAM, (int)level);
char ret[10];
if (!fgets(ret, sizeof(ret), log)) {
SoapySDR_logf(SOAPY_SDR_ERROR, "fgets() log identifier: %s", strerror(errno));
return -1;
}
if (sscanf(ret, "%d", &logId)!=1) {
SoapySDR_log(SOAPY_SDR_ERROR, "sscanf() logId: not an integer");
return -1;
}
logThread = std::thread(processLogStream, this);
return 0;
}
void SoapyTCPRemote::processLogStream(SoapyTCPRemote *rem)
{
char msg[256];
while (fgets(msg, sizeof(msg), rem->log)) {
// parse level from message, write to local handler
SoapySDRLogLevel lev = SOAPY_SDR_ERROR;
if (sscanf(msg, "%d:", (int*)&lev)>0) {
msg[0]='r';
msg[1]='<';
} else {
msg[0]='?';
msg[1]='<';
}
// replace trailing newline
msg[strlen(msg)-1]='>';
SoapySDR_log(lev, msg);
}
fclose(rem->log);
}
// Identification API
std::string SoapyTCPRemote::getHardwareKey() const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getHardwareKey()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_HARDWARE_KEY);
return rpc->readString();
}
SoapySDR::Kwargs SoapyTCPRemote::getHardwareInfo() const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getHardwareInfo()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_HARDWARE_INFO);
return rpc->readKwargs();
}
// Channels API
void SoapyTCPRemote::setFrontendMapping(const int direction, const std::string &mapping)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::setFrontendMapping()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_FRONTEND_MAPPING);
rpc->writeInteger(direction);
rpc->writeString(mapping);
rpc->readInteger(); // wait for completion!
}
std::string SoapyTCPRemote::getFrontendMapping(const int direction) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrontendMapping()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FRONTEND_MAPPING);
rpc->writeInteger(direction);
return rpc->readString();
}
size_t SoapyTCPRemote::getNumChannels(const int dir) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getNumChannels()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_NUM_CHANNELS);
rpc->writeInteger(dir);
return rpc->readInteger();
}
SoapySDR::Kwargs SoapyTCPRemote::getChannelInfo(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getChannelInfo()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_CHANNEL_INFO);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readKwargs();
}
bool SoapyTCPRemote::getFullDuplex(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFullDuplex()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FULL_DUPLEX);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readInteger()>0;
}
std::vector<std::string> SoapyTCPRemote::getStreamFormats(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getStreamFormats()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_STREAM_FORMATS);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readStrVector();
}
std::string SoapyTCPRemote::getNativeStreamFormat(const int direction, const size_t channel, double &fullScale) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getNativeStreamFormat()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_STREAM_NATIVE_FORMAT);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
std::string fmt = rpc->readString();
fullScale = rpc->readDouble();
return fmt;
}
SoapySDR::ArgInfoList SoapyTCPRemote::getStreamArgsInfo(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getStreamArgsInfo()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_STREAM_ARGS_INFO);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
SoapySDR::ArgInfoList info;
while (true) {
// fugly complex structure to serialise... maybe later!
std::string s = rpc->readString();
if (s.length()==0)
break;
}
SoapySDR_log(SOAPY_SDR_ERROR, "Unimplemented: getStreamArgsInfo");
return info;
}
SoapySDR::Stream *SoapyTCPRemote::setupStream(const int direction, const std::string &format, const std::vector<size_t> &channels, const SoapySDR::Kwargs &args)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::setupStream(%d,%s,%d,...)",
direction, format.c_str(), channels.size());
// if no channels were provided, assume channel 0
std::vector<size_t> lchannels;
if (channels.size()<1) {
lchannels.push_back(0);
} else {
lchannels.insert(lchannels.begin(), channels.begin(), channels.end());
}
// grab the native format
double fs;
std::string fmtnat = getNativeStreamFormat(direction, lchannels[0], fs);
// first check we have a frame size for both formats
if (g_frameSizes.find(format)==g_frameSizes.end()) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, unknown requested format (%s)", format.c_str());
return nullptr;
}
if (g_frameSizes.find(fmtnat)==g_frameSizes.end()) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, unknown native format (%s)", fmtnat.c_str());
return nullptr;
}
// choose smallest wire format..
if (g_frameSizes.at(fmtnat)<g_frameSizes.at(format)) {
fmtwire = fmtnat;
fmtout = format;
} else {
fmtwire = format;
fmtout = format;
}
// in order to help the remote side associate the data stream with the setup call,
// we create the data connection *first*, then send it's remoteId as the first
// parameter to the RPC call..
int data = connect();
if (data<0) {
SoapySDR_log(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, data stream failed to connect");
return nullptr;
}
// sending one of TCPREMOTE_DATA_<x> makes this a data stream in the remote
char dir[10];
int dlen = sprintf(dir, "%d\n", SOAPY_SDR_RX==direction? TCPREMOTE_DATA_SEND : TCPREMOTE_DATA_RECV);
if (write(data, dir, dlen)!=dlen) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, failed to write data stream type: %s",
strerror(errno));
close(data);
return nullptr;
}
dlen = read(data, dir, sizeof(dir));
if (dlen<=0) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, failed to read data stream remoteId: %s",
strerror(errno));
close(data);
return nullptr;
}
SoapySDR::Stream *rv = new SoapySDR::Stream();
dir[dlen]=0;
sscanf(dir, "%d", &rv->remoteId);
rv->netSock = data;
rv->fSize = g_frameSizes.at(fmtwire);
rv->numChans = lchannels.size();
rv->running = false;
// make the RPC call with the remoteId
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SETUP_STREAM);
rpc->writeInteger(rv->remoteId);
rpc->writeInteger(direction);
rpc->writeString(fmtwire);
// channel list, sent as a space separated list of numbers on one line
std::string chans;
for (auto it=lchannels.begin(); it!=lchannels.end(); ++it) {
if (chans.length()>0)
chans += " ";
chans += std::to_string(*it);
}
rpc->writeString(chans);
rpc->writeKwargs(args);
int status = rpc->readInteger();
if (status>=0) {
SoapySDR_logf(SOAPY_SDR_TRACE,"SoapyTCPRemote::setupStream, data stream remoteId: %d", rv->remoteId);
} else {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::setupStream, error: %d", status);
if (rv)
closeStream(rv);
rv = nullptr;
}
return rv;
}
void SoapyTCPRemote::closeStream(SoapySDR::Stream *stream)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::closeStream()");
if (stream->running)
deactivateStream(stream);
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_CLOSE_STREAM);
rpc->writeInteger(stream->remoteId);
rpc->readInteger(); // ignore return value, but wait!
close(stream->netSock);
delete stream;
}
size_t SoapyTCPRemote::getStreamMTU(SoapySDR::Stream *stream) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getStreamMTU()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_STREAM_MTU);
rpc->writeInteger(stream->remoteId);
return rpc->readInteger();
}
int SoapyTCPRemote::activateStream(SoapySDR::Stream *stream,
const int flags,
const long long timeNs,
const size_t numElems)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::activateStream()");
if (stream->running)
return 0;
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_ACTIVATE_STREAM);
rpc->writeInteger(stream->remoteId);
int status = rpc->readInteger();
if (status==0)
stream->running = true;
return status;
}
int SoapyTCPRemote::deactivateStream(SoapySDR::Stream *stream, const int flags, const long long timeNs)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::deactivateStream()");
if (!stream->running)
return 0;
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_DEACTIVATE_STREAM);
rpc->writeInteger(stream->remoteId);
int status = rpc->readInteger();
if (status==0)
stream->running = false;
return status;
}
static void *convertCS16toCF32(void *dst, const void *src, size_t cnt /* ignored */)
{
int16_t *cs16 = (int16_t *)src;
float *cf32 = (float *)dst;
// convert complex sample in range -INT16_MAX>INT16_MAX to -1.0>1.0
int16_t si = cs16[0];
int16_t sq = cs16[1];
cf32[0] = (float)si/(float)INT16_MAX;
cf32[1] = (float)sq/(float)INT16_MAX;
return dst;
}
int SoapyTCPRemote::readStream(SoapySDR::Stream *stream,
void * const *buffs,
const size_t numElems,
int &flags,
long long &timeNs,
const long timeoutUs)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::readStream()");
// Not running? timeout (says the docs)
if (!stream->running)
return SOAPY_SDR_TIMEOUT;
// Transfer format on the wire is interleaved sample frames (each fSize) across channels.
// We read by making one syscall for the maximum amount, then de-interleaving and possibly
// converting formats into buffs.
size_t blkSize = stream->fSize * stream->numChans;
uint8_t *swamp = (uint8_t *)alloca(blkSize * numElems);
int status = read(stream->netSock, swamp, blkSize*numElems);
if (status<=0) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::readStream, error reading data: %s", strerror(errno));
return SOAPY_SDR_STREAM_ERROR;
}
status /= stream->fSize;
int elems=0;
int soff=0;
int boff=0;
int bSize=stream->fSize;
void *(*cnv)(void *, const void *, size_t) = memcpy;
if (fmtout!=fmtwire) {
bSize = g_frameSizes.at(fmtout);
// TODO: actually check these formats =)
cnv = convertCS16toCF32;
}
while (elems<status) {
for (int c=0; c<stream->numChans; ++c) {
uint8_t *buf = (uint8_t *)(buffs[c]);
cnv(buf+boff, swamp+soff, stream->fSize);
soff += stream->fSize;
}
boff += bSize;
++elems;
}
return elems;
}
int SoapyTCPRemote::writeStream(SoapySDR::Stream *stream,
const void * const *buffs,
const size_t numElems,
int &flags,
const long long timeNs,
const long timeoutUs)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::writeStream()");
// Not running? timeout (says the docs)
if (!stream->running)
return SOAPY_SDR_TIMEOUT;
// allocate buffer for a set of interleaved channels
size_t bufSize = stream->fSize * stream->numChans;
uint8_t *nbuf = (uint8_t *)alloca(bufSize);
// assemble interleaved buffer for each element and write to network via stdio buffering/TCP back pressure
size_t elems=0;
int noff=0;
int boff=0;
while (elems<numElems) {
for (int c=0; c<stream->numChans; ++c) {
uint8_t *buf = (uint8_t *)buffs[c];
memcpy(nbuf+noff, buf+boff, stream->fSize);
noff += stream->fSize;
}
boff += stream->fSize;
if (write(stream->netSock, nbuf, bufSize)!=(int)bufSize) {
SoapySDR_logf(SOAPY_SDR_ERROR, "SoapyTCPRemote::writeStream, error writing data: %s", strerror(errno));
break;
}
++elems;
}
return (int)elems;
}
int SoapyTCPRemote::readStreamStatus(
SoapySDR::Stream *stream,
size_t &chanMask,
int &flags,
long long &timeNs,
const long timeoutUs)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::readStreamStatus()");
// TODO: report something?
return SOAPY_SDR_NOT_SUPPORTED;
}
bool SoapyTCPRemote::hasFrequencyCorrection(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::hasFrequencyCorrection()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_HAS_FREQUENCY_CORRECTION);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readInteger()!=0;
}
void SoapyTCPRemote::setFrequencyCorrection(const int direction, const size_t channel, double value)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::setFrequencyCorrection()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_FREQUENCY_CORRECTION);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeDouble(value);
rpc->readInteger(); // wait for completion!
}
double SoapyTCPRemote::getFrequencyCorrection(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequencyCorrection()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY_CORRECTION);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readDouble();
}
std::vector<std::string> SoapyTCPRemote::listGains(const int direction, const size_t channel) const
{
//list available gain element names,
//the functions below have a "name" parameter
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::listGains()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_LIST_GAINS);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readStrVector();
}
bool SoapyTCPRemote::hasGainMode(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::hasGainMode()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_HAS_GAIN_MODE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readInteger()>0;
}
void SoapyTCPRemote::setGainMode(const int direction, const size_t channel, const bool automatic)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::setGainMode()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_GAIN_MODE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeInteger(automatic?1:0);
rpc->readInteger(); // wait for completion!
}
bool SoapyTCPRemote::getGainMode(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getGainMode()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_GAIN_MODE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readInteger()>0;
}
void SoapyTCPRemote::setGain(const int direction, const size_t channel, const double value)
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::setGain()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_GAIN);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeDouble(value);
rpc->readInteger(); // wait for completion!
}
void SoapyTCPRemote::setGain(const int direction, const size_t channel, const std::string &name, const double value)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::setGain(%s)", name.c_str());
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_GAIN_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
rpc->writeDouble(value);
rpc->readInteger(); // wait for completion!
}
double SoapyTCPRemote::getGain(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getGain()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_GAIN);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readDouble();
}
double SoapyTCPRemote::getGain(const int direction, const size_t channel, const std::string &name) const
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::getGain(%s)", name.c_str());
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_GAIN_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
return rpc->readDouble();
}
SoapySDR::Range SoapyTCPRemote::getGainRange(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getGainRange()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_GAIN_RANGE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return SoapySDR::Range(
rpc->readDouble(),
rpc->readDouble(),
rpc->readDouble()
);
}
SoapySDR::Range SoapyTCPRemote::getGainRange(const int direction, const size_t channel, const std::string &name) const
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::getGainRange(%s)", name.c_str());
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_GAIN_RANGE_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
return SoapySDR::Range(
rpc->readDouble(),
rpc->readDouble(),
rpc->readDouble()
);
}
// Frequency
void SoapyTCPRemote::setFrequency(const int direction,
const size_t channel,
const double frequency,
const SoapySDR::Kwargs &args)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::setFrequency(%f)", frequency);
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_FREQUENCY);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeDouble(frequency);
rpc->writeKwargs(args);
rpc->readInteger(); // wait for completion!
}
void SoapyTCPRemote::setFrequency(const int direction,
const size_t channel,
const std::string &name,
const double frequency,
const SoapySDR::Kwargs &args)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::setFrequency(%s,%f)", name.c_str(), frequency);
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_FREQUENCY_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
rpc->writeDouble(frequency);
rpc->writeKwargs(args);
rpc->readInteger(); // wait for completion!
}
double SoapyTCPRemote::getFrequency(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequency()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readDouble();
}
double SoapyTCPRemote::getFrequency(const int direction, const size_t channel, const std::string &name) const
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequency(%s)", name.c_str());
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
return rpc->readDouble();
}
std::vector<std::string> SoapyTCPRemote::listFrequencies(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::listFrequencies()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_LIST_FREQUENCIES);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readStrVector();
}
SoapySDR::RangeList SoapyTCPRemote::getFrequencyRange(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequencyRange()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY_RANGE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
// read triplets of beg/end/step until step<0
SoapySDR::RangeList list;
while (true) {
double beg = rpc->readDouble();
double end = rpc->readDouble();
double step = rpc->readDouble();
if (step<0)
break;
list.push_back(SoapySDR::Range(beg,end,step));
}
return list;
}
SoapySDR::RangeList SoapyTCPRemote::getFrequencyRange(const int direction, const size_t channel, const std::string &name) const
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequencyRange(%s)", name.c_str());
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY_RANGE_NAMED);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeString(name);
// read triplets of beg/end/step until step<0
SoapySDR::RangeList list;
while (true) {
double beg = rpc->readDouble();
double end = rpc->readDouble();
double step = rpc->readDouble();
if (step<0)
break;
list.push_back(SoapySDR::Range(beg,end,step));
}
return list;
}
SoapySDR::ArgInfoList SoapyTCPRemote::getFrequencyArgsInfo(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getFrequencyArgsInfo()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_FREQUENCY_ARGS_INFO);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
// TODO: parse complex structure!
SoapySDR::ArgInfoList list;
while (true) {
// fugly complex structure to serialise... maybe later!
std::string s = rpc->readString();
if (s.length()==0)
break;
}
SoapySDR_log(SOAPY_SDR_ERROR, "Unimplemented: getFrequencyArgsInfo");
return list;
}
void SoapyTCPRemote::setSampleRate(const int direction, const size_t channel, const double rate)
{
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapyTCPRemote::setSampleRate(%f)", rate);
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_SET_SAMPLE_RATE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
rpc->writeDouble(rate);
rpc->readInteger(); // wait for completion!
}
double SoapyTCPRemote::getSampleRate(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getSampleRate()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_SAMPLE_RATE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
return rpc->readDouble();
}
std::vector<double> SoapyTCPRemote::listSampleRates(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::listSampleRates()");
// emulate through current API
SoapySDR::RangeList list = getSampleRateRange(direction, channel);
std::vector<double> rates;
for (auto r: list) {
for (double f=r.minimum(); f<=r.maximum(); f+=r.step())
rates.push_back(f);
}
return rates;
}
SoapySDR::RangeList SoapyTCPRemote::getSampleRateRange(const int direction, const size_t channel) const
{
SoapySDR_log(SOAPY_SDR_TRACE, "SoapyTCPRemote::getSampleRateRange()");
rpc->writeString(TCPREMOTE_RPC_SEP);
rpc->writeInteger(TCPREMOTE_GET_SAMPLE_RATE_RANGE);
rpc->writeInteger(direction);
rpc->writeInteger(channel);
SoapySDR::RangeList list;
// read triplets of beg/end/step until step<0
while (true) {
double beg = rpc->readDouble();
double end = rpc->readDouble();
double step = rpc->readDouble();
if (step<0)
break;
list.push_back(SoapySDR::Range(beg,end,step));
}
return list;
}
std::string getConfFile() {
// We support a configuration file in one of:
// [$XDG_CONFIG_DIRS]/SoapyTCPRemote.conf, $HOME/.config/SoapyTCPRemote.conf
SoapySDR_log(SOAPY_SDR_TRACE, "getConfFile");
std::string tst="";
if (getenv("XDG_CONFIG_DIRS")!=nullptr) {
std::string env = getenv("XDG_CONFIG_DIRS");
size_t pos, nxt=-1;
do {
pos = nxt+1;
size_t nxt = env.find(':', pos);
tst = env.substr(pos,nxt-pos);
tst += "/SoapyTCPRemote.conf";
if (access(tst.c_str(), R_OK)==0)
goto done;
} while (nxt!=std::string::npos);
}
tst = "/etc/xdg/SoapyTCPRemote.conf";
if (access(tst.c_str(), R_OK)==0)
goto done;
if (getenv("HOME")!=nullptr) {
tst = getenv("HOME");
tst += "/.config/SoapyTCPRemote.conf";
if (access(tst.c_str(), R_OK)==0)
goto done;
}
tst = "";
done:
SoapySDR_logf(SOAPY_SDR_TRACE, "SoapySDRRemote::getConfFile()=%s", tst.c_str());
return tst;
}
std::string getConfValue(const std::string &key) {
SoapySDR_logf(SOAPY_SDR_TRACE, "getConfValue(%s)", key.c_str());
std::string rv = "";
std::string cf = getConfFile();
FILE *fp = nullptr;
if (cf.length()>0 && (fp=fopen(cf.c_str(), "r"))!=nullptr) {
char line[80];
while (fgets(line, sizeof(line), fp)) {
std::string arg = line;
if (arg[0]=='#')
continue;
arg = arg.substr(0, arg.length()-1);
size_t off = arg.find(key, 0);
if (std::string::npos==off)
continue;
off = arg.find('=', off);
if (std::string::npos==off)
continue;
rv = arg.substr(off+1);
break;
}
fclose(fp);
}
return rv;
}
// NB: this is called with random (can be NULL) parameters when enumeration is done by an app,
// and with *merged* parameters (app & enumeration response) when a device is created by Device::make().
SoapySDR::KwargsList findTCPRemote(const SoapySDR::Kwargs &args)
{
SoapySDR_log(SOAPY_SDR_TRACE, "findTCPRemote");
SoapySDR::KwargsList results;
// We MUST have:
// tcpremote:address - server IP:Port
// tcpremote:driver - driver to load at the remote end
// We MAY have:
// tcpremote:args - driver arguments when creating
// We ensure mandatory args are present, and parse them
std::string address = getConfValue("address");
if (args.find("tcpremote:address")==args.end()) {
SoapySDR_logf(SOAPY_SDR_DEBUG, "Missing tcpremote:address, using: %s", address.c_str());
} else {
address = args.at("tcpremote:address");
}
std::string driver = getConfValue("driver");
if (args.find("tcpremote:driver")==args.end()) {
SoapySDR_logf(SOAPY_SDR_DEBUG, "Missing tcpremote:driver, using: %s", driver.c_str());
} else {
driver = args.at("tcpremote:driver");
}
size_t colon = address.find(':',0);
// no port, default to 0x50AF (20655)
int port = 0x50AF;
if (colon != (size_t)-1) {
port = atoi(address.substr(colon+1).c_str());
address = address.substr(0, colon);
}
SoapySDR_logf(SOAPY_SDR_TRACE, "findTCPRemote parsed: address=%s port=%u", address.c_str(), port);
SoapySDR::Kwargs soapyInfo;
// This is the name that shows up.
soapyInfo["device"] = "TCP remote: "+address;
soapyInfo["address"] = address;
soapyInfo["port"] = std::to_string(port);
soapyInfo["tcpremote:driver"] = driver;
if (args.find("tcpremote:args")!=args.end())
soapyInfo["tcpremote:args"] = args.at("tcpremote:args");
else
soapyInfo["tcpremote:args"] = getConfValue("args");
results.push_back(soapyInfo);
return results;
}
SoapySDR::Device *makeTCPRemote(const SoapySDR::Kwargs &args)
{
SoapySDR_log(SOAPY_SDR_INFO, "makeTCPRemote");
std::string address = args.at("address");
std::string port = args.at("port");
std::string remdriver = args.at("tcpremote:driver");
std::string remargs = args.at("tcpremote:args");
return (SoapySDR::Device*) new SoapyTCPRemote(address, port, remdriver, remargs);
}
/* Register this driver */
static SoapySDR::Registry registerTCPRemote("tcpremote", &findTCPRemote, &makeTCPRemote, SOAPY_SDR_ABI_VERSION);