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//
// AirSpy.swift
// PrySDR
//
// Created by Jacky Jack on 25/10/2024.
//
import libairspy
enum AirspyHFError: Error {
case InvalidDevice
}
/// Wrapper for libairspy library
class AirSpy {
var dev:UnsafeMutablePointer<airspy_device_t>? = .allocate(capacity: 1)
var sample_rates:[UInt32] = []
init(serialno: UInt64) throws {
let ret = airspy_open_sn(&dev, serialno)
if (ret != AIRSPY_SUCCESS.rawValue) {
throw AirspyHFError.InvalidDevice
}
}
/// will open first device it can find
init() throws {
let ret = airspy_open(&dev)
if ret != AIRSPY_SUCCESS.rawValue {
print("Couldnt open airspy device")
throw AirspyHFError.InvalidDevice
}
}
func getSampleRates() -> [UInt32] {
var ret: Int32 = 0
if sample_rates.count == 0 {
let nscount: UnsafeMutablePointer<UInt32> = .allocate(capacity: 1)
ret = airspy_get_samplerates(dev, nscount, 0)
let samplerates_buf:UnsafeMutableBufferPointer<UInt32> = .allocate(capacity: Int(nscount.pointee))
let rawPointer = UnsafeMutablePointer<UInt32>?(samplerates_buf.baseAddress!)
ret = airspy_get_samplerates(dev, rawPointer, nscount.pointee)
sample_rates = []
for i in 0..<Int(nscount.pointee) {
sample_rates.append(samplerates_buf[i])
}
}
return sample_rates
}
func setSampleRate(_ samplerate: UInt32 ) -> Int32 {
return airspy_set_samplerate(dev, samplerate)
}
func rfBias(_ rfbias: UInt8) -> Int32 {
return airspy_set_rf_bias(dev, rfbias)
}
func VGAGain(_ vgagain: UInt8) -> Int32 {
return airspy_set_vga_gain(dev, vgagain)
}
func mixerGain(_ gain: UInt8) -> Int32 {
return airspy_set_mixer_gain(dev, gain)
}
func lnaGain(_ gain: UInt8) -> Int32 {
return airspy_set_lna_gain(dev, gain)
}
func startRx(_ callback: airspy_sample_block_cb_fn) -> Int32 {
return airspy_start_rx(dev, callback, nil)
}
func stopRx() -> Int32 {
return airspy_stop_rx(dev)
}
func setFrequency(_ freq: UInt32) -> Int32 {
return airspy_set_freq(dev, freq)
}
func isStreaming() -> Int32 {
return airspy_is_streaming(dev)
}
func close() -> Int32 {
return airspy_close(dev)
}
}
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