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//
// AirSpyHF.swift
// PrySDR
//
// Created by Jacky Jack on 25/10/2024.
//
import libairspyhf
enum AirspyHFError: Error {
case InvalidDevice
}
/// Wrapper for libairspyhf library
class AirSpyHF {
var dev:UnsafeMutablePointer<airspyhf_device_t>? = .allocate(capacity: 1)
/*
init() {
}*/
/// Initialise by index
init(idx: Int32) throws {
let ndev = airspyhf_list_devices(nil, 0)
if ((idx < 0) || (idx >= ndev)) {
throw AirspyHFError.InvalidDevice
}
let serialPtr: UnsafeMutablePointer<UInt64> = .allocate(capacity: 1)
airspyhf_list_devices(serialPtr, idx+1)
if serialPtr.pointee == 0 {
print("Cant get serial number of device index \(idx)")
throw AirspyHFError.InvalidDevice
}
try openSN(serial: serialPtr.pointee)
}
func openSN(serial: UInt64) throws {
let ret = airspyhf_open_sn(&dev, serial)
print("ret=\(ret)")
if (ret != AIRSPYHF_SUCCESS.rawValue) {
print("Cant open device with serial numner \(serial)")
throw AirspyHFError.InvalidDevice
}
}
/*
/// Initialise by serial number
init(serial: UInt64) {
}*/
func getSampleRates() -> [UInt32] {
var sample_rates:[UInt32] = []
var ret: Int32
let nsrate = UnsafeMutablePointer<UInt32>.allocate(capacity: 1)
ret = airspyhf_get_samplerates(dev, nsrate, 0)
if ret == AIRSPYHF_ERROR.rawValue {
print("Error uptaining the sample number")
return []
}
let sampleBuffer = UnsafeMutableBufferPointer<UInt32>.allocate(capacity: Int(nsrate.pointee))
let rawPointer = UnsafeMutablePointer<UInt32>?(sampleBuffer.baseAddress!)
ret = airspyhf_get_samplerates(dev, rawPointer, nsrate.pointee)
if (ret == AIRSPYHF_ERROR.rawValue) {
print("Error geting sample rates. Not processed")
}
print("Found \(nsrate.pointee) samplerates")
for idx in 0..<nsrate.pointee {
sample_rates.append(sampleBuffer[Int(idx)])
}
return sample_rates
}
func setSampleRate(_ samplerate:UInt32) -> Int32 {
let ret = airspyhf_set_samplerate(dev, samplerate)
return ret
}
func setHfAgc(_ flag: UInt8) -> Int32{
let ret = airspyhf_set_hf_agc(dev, flag)
return ret
}
func setHfAgcThreshold(_ flag: UInt8) -> Int32 {
let ret = airspyhf_set_hf_agc_threshold(dev, flag)
return ret
}
func setHfLNA(_ flag: UInt8) -> Int32 {
let ret = airspyhf_set_hf_lna(dev, flag)
return ret
}
func start(_ callback: airspyhf_sample_block_cb_fn) -> Int32 {
let ret = airspyhf_start(dev, callback, nil)
return ret
}
func stop() -> Int32 {
let ret = airspyhf_stop(dev)
return ret
}
func setFreq(_ frequency: UInt32) -> Int32 {
let ret = airspyhf_set_freq(dev, frequency)
return ret
}
func isStreaming() -> Int32 {
let ret = airspyhf_is_streaming(dev)
return ret
}
func close() {
airspyhf_close(dev)
}
}
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