1 files changed, 64 insertions, 0 deletions
diff --git a/WaterfallFile_UI/FileSpectrum.swift b/WaterfallFile_UI/FileSpectrum.swift
new file mode 100644
index 0000000..6415dfa
--- /dev/null
+++ b/WaterfallFile_UI/FileSpectrum.swift
@@ -0,0 +1,64 @@
+//
+//  FileSpectrum.swift
+//  PrySDR
+//
+//  Created by Jacky Jack on 01/01/2025.
+//
+
+import Accelerate
+import AppKit
+import Combine
+import CoreImage
+
+
+class FileSpectrum: NSObject, ObservableObject {
+    
+    let default_width = 512
+    let default_height = 512
+    
+    let sessionQueue = DispatchQueue(label: "sessionQueue",
+                                         attributes: [],
+                                         autoreleaseFrequency: .workItem)
+    
+    @Published var outputImage = emptyCGImage
+    
+    let simpleImage = SimpleImage(width: 256, height: 256)
+    
+    /// A 1x1 Core Graphics image.
+    static var emptyCGImage: CGImage = {
+            let buffer = vImage.PixelBuffer(
+                pixelValues: [0],
+                size: .init(width: 1, height: 1),
+                pixelFormat: vImage.Planar8.self)
+            
+            let fmt = vImage_CGImageFormat(
+                bitsPerComponent: 8,
+                bitsPerPixel: 8 ,
+                colorSpace: CGColorSpaceCreateDeviceGray(),
+                bitmapInfo: CGBitmapInfo(rawValue: CGImageAlphaInfo.none.rawValue),
+                renderingIntent: .defaultIntent)
+            
+            return buffer.makeCGImage(cgImageFormat: fmt!)!
+    }()
+    
+    func makeSpectrogramImage() -> NSImage {
+        
+        return NSImage(cgImage: FileSpectrum.emptyCGImage, size: .zero)
+    }
+
+    
+    
+    func startRunning() {
+        sessionQueue.async {
+            print("lets start the task for spectrum analysis")
+            for i in 0..<100 {
+                print("Process the task \(i)")
+                self.simpleImage.drawPixel(i, i, PixelData(a: 255, r: 255, g: 0, b: 0))
+                DispatchQueue.main.async {
+                    self.outputImage = self.simpleImage.toCGImage()!
+                }
+                sleep(1)
+            }
+        }
+    }
+}