waterfallui: data get processed and drawn, ui controlls are dummy

1 files changed, 24 insertions, 0 deletions

diff --git a/Radio/Utils/WaterfallFile/NaiveFFT512.swift b/Radio/Utils/WaterfallFile/NaiveFFT512.swift
index b4dca7e..0e6373a 100644
--- a/Radio/Utils/WaterfallFile/NaiveFFT512.swift
+++ b/Radio/Utils/WaterfallFile/NaiveFFT512.swift
@@ -46,4 +46,28 @@ class NaiveFFT512 {
         return transform_result
     }
     
+    func computeLine1024(_ processingArray: [Int8]) -> [Float] {
+        
+        var dataFloat = [Float](repeating: 0.0, count: NaiveFFT512.sampleCount*2)
+        
+        if processingArray.count != NaiveFFT512.sampleCount*2 {
+            print("Not supporting arrays not equail to \(NaiveFFT512.sampleCount)")
+            return []
+        }
+        
+        vDSP.convertElements(of: processingArray, to: &dataFloat)
+        //dataFloat = vDSP.add(127.0, dataFloat)
+        //print(dataFloat)
+        
+        //move from -127.0 to 128.0 range -1.0...1.0
+        //var adjusted = vDSP.divide(dataFloat, Float(sampleCount))
+        var adjusted = dataFloat
+        //print(adjusted)
+        
+        var transform_result = forwardDCT.transform(adjusted)
+        transform_result = vDSP.absolute(transform_result)
+        
+        return transform_result
+    }
+    
 }