From abbe14bebb2935b017b980e6fc2bfc5e94052049 Mon Sep 17 00:00:00 2001
From: Arturs Artamonovs <arturs.artamonovs@protonmail.com>
Date: Wed, 4 Dec 2024 11:07:17 +0000
Subject: AirSpyHFIQ: read samples from airspyhf and dump those to fc32 file

---
 Radio/HW/AirSpyHF/AirSpyHF.swift | 112 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 110 insertions(+), 2 deletions(-)

(limited to 'Radio/HW/AirSpyHF/AirSpyHF.swift')

diff --git a/Radio/HW/AirSpyHF/AirSpyHF.swift b/Radio/HW/AirSpyHF/AirSpyHF.swift
index 3affcff..ea835af 100644
--- a/Radio/HW/AirSpyHF/AirSpyHF.swift
+++ b/Radio/HW/AirSpyHF/AirSpyHF.swift
@@ -7,9 +7,117 @@
 
 import libairspyhf
 
+enum AirspyHFError: Error {
+    case InvalidDevice
+}
+
 /// Wrapper for libairspyhf library
 class AirSpyHF {
-    init() {
-        //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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