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Merge pull request #22 from sdn-ninja/rtl-support

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Rtl support
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30hours 2024-06-13 20:53:32 +09:30 committed by GitHub
parent e7c908f7ef 81c76dd7ea
commit 7ecdb17423
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GPG key ID: B5690EEEBB952194
2 changed files with 22 additions and 20 deletions
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38
src/capture/kraken/Kraken.cpp
View file

@ -11,7 +11,7 @@ Kraken::Kraken(std::string _type, uint32_t _fc, uint32_t _fs,
: Source(_type, _fc, _fs, _path, _saveIq)
{
// convert gain to tenths of dB
for (int i = 0; i <= _gain.size(); i++)
for (int i = 0; i < _gain.size(); i++)
{
gain.push_back(static_cast<int>(_gain[i]*10));
channelIndex.push_back(i);
@ -33,7 +33,7 @@ Kraken::Kraken(std::string _type, uint32_t _fc, uint32_t _fs,
check_status(status, "Failed to close device for available gains.");
// update gains to next value if invalid
for (int i = 0; i <= _gain.size(); i++)
for (int i = 0; i < _gain.size(); i++)
{
int adjustedGain = static_cast<int>(_gain[i] * 10);
auto it = std::lower_bound(validGains.begin(),
@ -54,10 +54,10 @@ void Kraken::start()
for (size_t i = 0; i < channelIndex.size(); i++)
{
std::cout << "[Kraken] Setting up channel " << i << "." << std::endl;
rtlsdr_dev_t* dev;
status = rtlsdr_open(&dev, i);
status = rtlsdr_open(&devs[i], i);
check_status(status, "Failed to open device.");
devs.push_back(dev);
status = rtlsdr_set_center_freq(devs[i], fc);
check_status(status, "Failed to set center frequency.");
status = rtlsdr_set_sample_rate(devs[i], fs);
@ -86,11 +86,8 @@ void Kraken::stop()
void Kraken::process(IqData *buffer1, IqData *buffer2)
{
std::vector<std::thread> threads;
for (size_t i = 0; i < channelIndex.size(); i++)
{
threads.emplace_back(rtlsdr_read_async, devs[i], callback, &channelIndex, 0, 16 * 16384);
}
threads.emplace_back(rtlsdr_read_async, devs[0], callback, buffer1, 0, 16 * 16384);
threads.emplace_back(rtlsdr_read_async, devs[1], callback, buffer2, 0, 16 * 16384);
// join threads
for (auto& thread : threads) {
thread.join();
@ -99,13 +96,19 @@ void Kraken::process(IqData *buffer1, IqData *buffer2)
void Kraken::callback(unsigned char *buf, uint32_t len, void *ctx)
{
int deviceIndex = *reinterpret_cast<int*>(ctx);
// buffers[i]->lock();
// for (size_t j = 0; j < n_read; j++)
// {
// buffers[i]->push_back({buffer[j].real(), buffer[j].imag()});
// }
// buffers[i]->unlock();
IqData* buffer_blah2 = (IqData*)ctx;
int8_t* buffer_kraken = (int8_t*)buf;
buffer_blah2->lock();
for (size_t i = 0; i < len; i += 2) {
double iqi = static_cast<double>(buffer_kraken[i]);
double iqq = static_cast<double>(buffer_kraken[i + 1]);
buffer_blah2->push_back({iqi, iqq});
}
buffer_blah2->unlock();
}
void Kraken::replay(IqData *buffer1, IqData *buffer2, std::string _file, bool _loop)
@ -120,4 +123,3 @@ void Kraken::check_status(int status, std::string message)
throw std::runtime_error("[Kraken] " + message);
}
}

4
src/capture/kraken/Kraken.h
View file

@ -10,7 +10,7 @@
/// The original steve-m/librtlsdr does not include this method.
/// This is included in librtlsdr/librtlsdr or krakenrf/librtlsdr.
/// Also works using 2 RTL-SDRs which have been clock synchronised.
/// @author 30hours, Michael Brock
/// @author 30hours, Michael Brock, sdn-ninja
/// @todo Add support for multiple surveillance channels.
/// @todo Replay support.
@ -30,7 +30,7 @@ class Kraken : public Source
private:
/// @brief Individual RTL-SDR devices.
std::vector<rtlsdr_dev_t*> devs;
rtlsdr_dev_t* devs[5];
/// @brief Device indices for Kraken.
std::vector<int> channelIndex;