Productionize/photo capture

DualCameraDemo/DualCameraDemo.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		4F4460DE2EB94A7C00685CD7 /* Zoomable in Frameworks */ = {isa = PBXBuildFile; productRef = 4F4460DD2EB94A7C00685CD7 /* Zoomable */; };
 		4F7E4C7F2D6D2B0A006F5609 /* DualCameraKit in Frameworks */ = {isa = PBXBuildFile; productRef = 4F7E4C7E2D6D2B0A006F5609 /* DualCameraKit */; };
 /* End PBXBuildFile section */
 
@@ -70,6 +71,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				4F7E4C7F2D6D2B0A006F5609 /* DualCameraKit in Frameworks */,
+				4F4460DE2EB94A7C00685CD7 /* Zoomable in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -132,6 +134,7 @@
 			name = DualCameraDemo;
 			packageProductDependencies = (
 				4F7E4C7E2D6D2B0A006F5609 /* DualCameraKit */,
+				4F4460DD2EB94A7C00685CD7 /* Zoomable */,
 			);
 			productName = DualCameraDemo;
 			productReference = 4F4D659B2D66D02C00F40490 /* DualCameraDemo.app */;
@@ -217,6 +220,7 @@
 			minimizedProjectReferenceProxies = 1;
 			packageReferences = (
 				4F7E4C7D2D6D2B0A006F5609 /* XCLocalSwiftPackageReference "../../DualCameraKit" */,
+				4F4460DC2EB94A7C00685CD7 /* XCRemoteSwiftPackageReference "Zoomable" */,
 			);
 			preferredProjectObjectVersion = 77;
 			productRefGroup = 4F4D659C2D66D02C00F40490 /* Products */;
@@ -620,7 +624,23 @@
 		};
 /* End XCLocalSwiftPackageReference section */
 
+/* Begin XCRemoteSwiftPackageReference section */
+		4F4460DC2EB94A7C00685CD7 /* XCRemoteSwiftPackageReference "Zoomable" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/ryohey/Zoomable";
+			requirement = {
+				branch = main;
+				kind = branch;
+			};
+		};
+/* End XCRemoteSwiftPackageReference section */
+
 /* Begin XCSwiftPackageProductDependency section */
+		4F4460DD2EB94A7C00685CD7 /* Zoomable */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 4F4460DC2EB94A7C00685CD7 /* XCRemoteSwiftPackageReference "Zoomable" */;
+			productName = Zoomable;
+		};
 		4F7E4C7E2D6D2B0A006F5609 /* DualCameraKit */ = {
 			isa = XCSwiftPackageProductDependency;
 			productName = DualCameraKit;

DualCameraDemo/DualCameraDemo/CapturePreviewOverlay.swift

@@ -1,9 +1,11 @@
 import SwiftUI
+import Zoomable
 
 struct CapturePreviewOverlay: View {
     let image: UIImage
     let onDismiss: () -> Void
     let onConfirm: () -> Void
+    @GestureState private var magnifyBy = 1.0
 
     var body: some View {
         ZStack {
@@ -16,6 +18,7 @@ struct CapturePreviewOverlay: View {
                         Image(systemName: "xmark.circle.fill")
                             .font(.system(size: 24))
                             .foregroundColor(.white)
+
                     }
 
                     Spacer()
@@ -38,11 +41,13 @@ struct CapturePreviewOverlay: View {
                     .resizable()
                     .scaledToFit()
                     .cornerRadius(12)
+                    .zoomable()
                     .padding()
 
                 Spacer()
             }
             .padding()
         }
     }
+
 }

DualCameraDemo/DualCameraDemo/ContainerExample.swift

@@ -18,25 +18,25 @@
         case showing(UIImage)
     }
     var previewPhase = PreviewPhase.hidden
 
     func showPreview(_ image: UIImage) {
         withAnimation {
             previewPhase = .showing(image)
         }
     }
 
     func reset() {
         withAnimation {
             previewPhase = .hidden
         }
 
     }
 }
 
 private struct AppTabView: View {
     @State private var selectedTab: Tab = .camera
     @State private var captureReviewState = CaptureReviewState()
     private var vm: DualCameraViewModel
 
     init() {
         vm = DualCameraViewModel(
@@ -45,7 +45,7 @@
             saveToLibrary: false
         )
     }
 
     var body: some View {
         ZStack {
             VStack {
@@ -60,7 +60,7 @@
                 tabBar
                 .edgesIgnoringSafeArea(.all)
             }
 
             switch captureReviewState.previewPhase {
             case .hidden:
                 EmptyView()
@@ -77,14 +77,14 @@
                 .transition(.scale.combined(with: .opacity))
             }
         }
-        .background(.primary)
+        .background(.black)
         .onChange(of: vm.capturedPhoto) { oldValue, newValue in
             if let image = newValue {
                 captureReviewState.showPreview(image)
             }
         }
     }
 
     private var cameraCapture: some View {
         DualCameraScreen(
             viewModel: vm
@@ -125,7 +125,7 @@
     private func tabBarButton(tab: Tab, image: String, isCenter: Bool = false) -> some View {
         Button(action: {
             selectedTab = tab
         }) {
             if isCenter {
                 ZStack {
                     Circle()

Sources/DualCameraKit/CameraRenderer.swift

@@ -7,9 +7,12 @@ import UIKit
 public protocol CameraRenderer: AnyObject {
     /// Update renderer with new camera frame.
     func update(with buffer: CVPixelBuffer)
-    
+
     /// Capture current frame as UIImage.
     func captureCurrentFrame() async throws -> UIImage
+
+    /// Capture current frame as raw pixel buffer (for high-quality composition).
+    func captureCurrentBuffer() async throws -> CVPixelBuffer
 }
 
 enum MetalRendererError: Error {
@@ -32,6 +35,10 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
     private var textureCache: CVMetalTextureCache?
     private var renderPipelineState: MTLRenderPipelineState?
     private var currentTexture: MTLTexture?
+
+    // MARK: - Buffer Storage
+    /// Stores the most recent pixel buffer for high-quality capture
+    private var currentBuffer: CVPixelBuffer?
 
     // MARK: - Initialization
     public required init(coder: NSCoder) {
@@ -69,15 +76,15 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
     /// Initializes Metal components and sets up the render pipeline.
     private func initializeMetal() throws {
         guard let device = self.device else {
-            DualCameraLogger.errors.error("❌ Metal not supported on this device")
+            DualCameraLogger.log("❌ Metal not supported on this device", category: .errors, level: .error)
             throw MetalRendererError.metalNotSupported
         }
 
         commandQueue = device.makeCommandQueue()
 
         let status = CVMetalTextureCacheCreate(kCFAllocatorDefault, nil, device, nil, &textureCache)
         if status != kCVReturnSuccess {
-            DualCameraLogger.errors.error("❌ Failed to create Metal texture cache")
+            DualCameraLogger.log("❌ Failed to create Metal texture cache", category: .errors, level: .error)
             throw MetalRendererError.textureCreationFailed
         }
 
@@ -99,7 +106,7 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
     /// Sets up the Metal render pipeline.
     private func setupRenderPipeline() throws {
         guard let device = device else {
-            DualCameraLogger.errors.error("❌ No metal device found")
+            DualCameraLogger.log("❌ No metal device found", category: .errors, level: .error)
             throw MetalRendererError.metalLibraryLoadFailed
         }
 
@@ -109,13 +116,13 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
         do {
             library = try device.makeDefaultLibrary(bundle: spmBundle)
         } catch {
-            DualCameraLogger.errors.error("❌ Failed to load Metal library: \(error.localizedDescription)")
+            DualCameraLogger.log("❌ Failed to load Metal library: \(error.localizedDescription)", category: .errors, level: .error)
             throw MetalRendererError.metalLibraryLoadFailed
         }
 
         guard let vertexFunction = library.makeFunction(name: MetalLibFunctionName.vertexShader),
               let fragmentFunction = library.makeFunction(name: MetalLibFunctionName.fragmentShader) else {
-            DualCameraLogger.errors.error("❌ Metal functions not found in library")
+            DualCameraLogger.log("❌ Metal functions not found in library", category: .errors, level: .error)
             throw MetalRendererError.metalFunctionNotFound
         }
 
@@ -126,9 +133,10 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
 
         do {
             renderPipelineState = try device.makeRenderPipelineState(descriptor: pipelineDescriptor)
-            DualCameraLogger.session.info("✅ Metal render pipeline initialized successfully")
+            DualCameraLogger.log("✅ Metal render pipeline initialized successfully", category: .session)
+
         } catch {
-            DualCameraLogger.errors.error("❌ Failed to create render pipeline: \(error.localizedDescription)")
+            DualCameraLogger.log("❌ Failed to create render pipeline: \(error.localizedDescription)", category: .errors, level: .error)
             throw MetalRendererError.renderPipelineCreationFailed(error)
         }
     }
@@ -160,6 +168,9 @@ public final class MetalCameraRenderer: MTKView, CameraRenderer, MTKViewDelegate
 extension MetalCameraRenderer {
 
     public func update(with buffer: CVPixelBuffer) {
+        // Store the buffer for high-quality capture
+        self.currentBuffer = buffer
+
         let bufferWrapper = PixelBufferWrapper(buffer: buffer)
         createAndUpdateTexture(from: bufferWrapper)
     }
@@ -247,11 +258,20 @@ extension MetalCameraRenderer {
         free(rawData)
 
         // Create and return the UIImage
-        // TODO: should this scale be dynamic? 
+        // TODO: should this scale be dynamic?
         return UIImage(cgImage: cgImage, scale: 1.0, orientation: .up)
     }
-
-
+
+    /// Captures the current frame as a raw pixel buffer at native camera resolution.
+    /// This is preferred over captureCurrentFrame() for high-quality photo/video composition.
+    public func captureCurrentBuffer() async throws -> CVPixelBuffer {
+        guard let buffer = self.currentBuffer else {
+            throw DualCameraError.captureFailure(.noFrameAvailable)
+        }
+        return buffer
+    }
+
+
     // MARK: - Private Helpers
 
     /// Creates a texture from the given buffer and updates the view.

Sources/DualCameraKit/DualCameraCameraStreamSource.swift

@@ -252,10 +252,11 @@ public final class DualCameraMockCameraStreamSource: DualCameraCameraStreamSourc
     public init() { }
 
     public func startSession() async throws {
-        let purpleBuffer: CVPixelBuffer = UIColor.purple.asImage().pixelBuffer()!
+        let mockSize = CGSize(width: 1080, height: 1920)
+        let purpleBuffer: CVPixelBuffer = UIColor.purple.asImage(mockSize).pixelBuffer()!
         let purpleBufferWrapper = PixelBufferWrapper(buffer: purpleBuffer)
 
-        let yellowBuffer = UIColor.yellow.asImage().pixelBuffer()!
+        let yellowBuffer = UIColor.yellow.asImage(mockSize).pixelBuffer()!
         let yellowBufferWrapper = PixelBufferWrapper(buffer: yellowBuffer)
         await frontBroadcaster.broadcast(yellowBufferWrapper)
         await backBroadcaster.broadcast(purpleBufferWrapper)