From 7b3ecfffc59d2d980d9f7628365b64c20fe015be Mon Sep 17 00:00:00 2001
From: Runt <qingingrunt2010@qq.com>
Date: Sun, 27 Jul 2025 09:42:03 +0000
Subject: [PATCH] 多个小窗缩放问题修复
---
LiveProject/controller/CameraCapture.swift | 85 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 85 insertions(+), 0 deletions(-)
diff --git a/LiveProject/controller/CameraCapture.swift b/LiveProject/controller/CameraCapture.swift
index e69de29..66d0a0c 100644
--- a/LiveProject/controller/CameraCapture.swift
+++ b/LiveProject/controller/CameraCapture.swift
@@ -0,0 +1,85 @@
+//
+// CameraCapture.swift
+// LiveProject
+//
+// Created by 倪路朋 on 6/27/25.
+//
+import AVFoundation
+
+class CameraCapture: NSObject, AVCaptureVideoDataOutputSampleBufferDelegate {
+ private let session = AVCaptureSession()
+ private var videoOutput: AVCaptureVideoDataOutput?
+ private var input: AVCaptureDeviceInput?
+ var onFrame: ((CVPixelBuffer) -> Void)?
+
+ func start() {
+ guard let device = AVCaptureDevice.default(for: .video),
+ let input = try? AVCaptureDeviceInput(device: device) else {
+ print("❌ 相机设备无法创建")
+ return
+ }
+
+ self.input = input
+
+ session.beginConfiguration()
+ session.sessionPreset = .hd1920x1080
+
+ if session.canAddInput(input) {
+ session.addInput(input)
+ }
+
+ let output = AVCaptureVideoDataOutput()
+ output.videoSettings = [
+ kCVPixelBufferPixelFormatTypeKey as String: kCVPixelFormatType_32BGRA
+ ]
+ output.setSampleBufferDelegate(self, queue: DispatchQueue(label: "camera.queue"))
+ if session.canAddOutput(output) {
+ session.addOutput(output)
+ }
+
+ self.videoOutput = output
+ // 在相机配置代码中
+ if let videoConnection = output.connection(with: .video) {
+ // 自动旋转（推荐）
+ videoConnection.automaticallyAdjustsVideoMirroring = false
+ videoConnection.videoOrientation = .portrait // 或根据UI方向设置
+
+ // 对于前置摄像头启用镜像
+ /*if videoConnection.isVideoMirroringSupported {
+ videoConnection.isVideoMirrored = (cameraPosition == .front)
+ }*/
+ }
+ session.commitConfiguration()
+ session.startRunning()
+ print("📷 相机已开启")
+ }
+
+ func captureOutput(_ output: AVCaptureOutput,
+ didOutput sampleBuffer: CMSampleBuffer,
+ from connection: AVCaptureConnection) {
+ guard let buffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return }
+ let width = CVPixelBufferGetWidth(buffer)
+ let height = CVPixelBufferGetHeight(buffer)
+ //print("📷 当前帧尺寸: \(width)x\(height)")
+ onFrame?(buffer)
+ }
+
+ func stop(){
+ session.stopRunning()
+ session.beginConfiguration()
+
+ if let input = input {
+ session.removeInput(input)
+ }
+
+ if let output = videoOutput {
+ session.removeOutput(output)
+ }
+
+ session.commitConfiguration()
+
+ input = nil
+ videoOutput = nil
+ print("📷 相机已关闭")
+ }
+}
--
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