//
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// MetalVideoView.swift
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// LiveProject
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// 视频绘制
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// Created by 倪路朋 on 6/26/25.
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//
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import SwiftUI
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import MetalKit
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struct MetalVideoRenderView: UIViewRepresentable {
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// 统一接口，接收各种视频源的帧数据
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var frameData: VideoFrameData?
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func makeCoordinator() -> Coordinator {
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Coordinator(self)
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}
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func makeUIView(context: Context) -> MTKView {
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let mtkView = MTKView()
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mtkView.device = context.coordinator.device
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mtkView.delegate = context.coordinator
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mtkView.framebufferOnly = false
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mtkView.colorPixelFormat = .bgra8Unorm
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mtkView.autoResizeDrawable = true
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return mtkView
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}
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func updateUIView(_ uiView: MTKView, context: Context) {
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// 更新帧数据
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context.coordinator.updateFrame(frameData)
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}
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class Coordinator: NSObject, MTKViewDelegate {
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var parent: MetalVideoRenderView
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var device: MTLDevice
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var commandQueue: MTLCommandQueue
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var pipelineState: MTLRenderPipelineState
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var textureCache: CVMetalTextureCache?
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// YUV转RGB的着色器
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var yuvConversionPipeline: MTLComputePipelineState?
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init(_ parent: MetalVideoRenderView) {
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self.parent = parent
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self.device = MTLCreateSystemDefaultDevice()!
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self.commandQueue = device.makeCommandQueue()!
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// 初始化Metal资源
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// (这里需要设置渲染管线和纹理缓存)
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}
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func updateFrame(_ frameData: VideoFrameData?) {
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// 根据不同的帧数据格式(YUV/RGBA)进行处理
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// 将数据转换为Metal纹理
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}
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func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {}
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func draw(in view: MTKView) {
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// 执行Metal绘制命令
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}
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}
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}
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