194 lines
8.3 KiB
Swift
194 lines
8.3 KiB
Swift
//
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// PlayByTransferConvertor.swift
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// SwiftProject
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//
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// Created by aaa on 2024/3/12.
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//
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import Foundation
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import AVKit
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import VideoToolbox
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import CoreImage
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import ImageIO
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class PlayByTransferConvertor {
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func convertVideo(asset:AVAsset, assetOutput:AVAssetReaderTrackOutput,type:SpatialType,time: CMTime)->(CIImage?,CMTime?) {
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var newpb:CIImage? = nil
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var presentationTime:CMTime? = nil
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print("sta.....>>>>>>>thread:\(Thread.current) assetOutput:\(assetOutput) \n\(Date.now.timeIntervalSince1970)")
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while let nextSampleBuffer = assetOutput.copyNextSampleBuffer() {
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presentationTime = CMSampleBufferGetPresentationTimeStamp(nextSampleBuffer)
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print("presentationTime: \(presentationTime) \ntime: \(time)")
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if presentationTime! > time {//如果当前获取的buffer的时间>time的时间,则直接返回即可
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print("如果当前获取的buffer的时间>time的时间,则直接返回即可...")
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break
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}
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if presentationTime == time {
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guard let taggedBuffers = nextSampleBuffer.taggedBuffers else { break }
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let leftEyeBuffer = taggedBuffers.first(where: {
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$0.tags.first(matchingCategory: .stereoView) == .stereoView(.leftEye)
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})?.buffer
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let rightEyeBuffer = taggedBuffers.first(where: {
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$0.tags.first(matchingCategory: .stereoView) == .stereoView(.rightEye)
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})?.buffer
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if let leftEyeBuffer,
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let rightEyeBuffer,
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case let .pixelBuffer(leftEyePixelBuffer) = leftEyeBuffer,
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case let .pixelBuffer(rightEyePixelBuffer) = rightEyeBuffer {
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let lciImage = CIImage(cvPixelBuffer: leftEyePixelBuffer)
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let rciImage = CIImage(cvPixelBuffer: rightEyePixelBuffer)
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let left = UIImage(ciImage: lciImage )
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let right = UIImage(ciImage: rciImage )
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var cwidth:CGFloat
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var cheight:CGFloat
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switch type {
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case .hsbs:
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cwidth = left.size.width
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cheight = left.size.height
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newpb = joinImages_sbs(left: left, right: right, imgWidth: cwidth, imgHeight:cheight )
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break
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case .fsbs:
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cwidth = left.size.width
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cheight = left.size.height
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newpb = joinImages_fsbs(left: left, right: right, imgWidth: cwidth, imgHeight: cheight)
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break
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case .parallelEyes://平行眼
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newpb = joinImages(leftImage: lciImage, rightImage: rciImage)
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break
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case .crossedEyes://交叉眼
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newpb = joinImages(leftImage: rciImage, rightImage: lciImage)
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break
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case .redBlueSolid://红蓝立体
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newpb = joinImages_red_blue(lciImage: lciImage, rciImage: rciImage)
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break
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default:
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break
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}
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}
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CMSampleBufferInvalidate(nextSampleBuffer)
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break
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}
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}
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print("PlayByTransferConvertor 测试看是否有返回....")
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return (newpb,presentationTime)
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}
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//合成红蓝立体图片
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func joinImages_red_blue(lciImage:CIImage,rciImage:CIImage) -> CIImage {
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// 创建红色和蓝色滤镜
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let redColorMatrix: [CGFloat] = [
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0.0, 0.0, 0.0, 0.0, 0.0, // 红色通道
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0.0, 0.0, 0.0, 0.0, 0.0, // 绿色通道
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0.0, 0.0, 1.0, 0.0, 0.0, // 蓝色通道
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0.0, 0.0, 0.0, 1.0, 0.0 // 透明通道
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]
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let blueColorMatrix: [CGFloat] = [
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1.0, 0.0, 0.0, 0.0, 0.0, // 红色通道
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0.0, 0.0, 0.0, 0.0, 0.0, // 绿色通道
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0.0, 0.0, 0.0, 0.0, 0.0, // 蓝色通道
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0.0, 0.0, 0.0, 1.0, 0.0 // 透明通道
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]
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let redFilter = CIFilter(name: "CIColorMatrix")!
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redFilter.setValue(lciImage, forKey: kCIInputImageKey)
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redFilter.setValue(CIVector(values: redColorMatrix, count: redColorMatrix.count), forKey: "inputRVector")
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let blueFilter = CIFilter(name: "CIColorMatrix")!
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blueFilter.setValue(rciImage, forKey: kCIInputImageKey)
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blueFilter.setValue(CIVector(values: blueColorMatrix, count: blueColorMatrix.count), forKey: "inputBVector")
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var lastImg:CIImage? = nil
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// 获取处理后的图像
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if let redOutputImage = redFilter.outputImage,
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let blueOutputImage = blueFilter.outputImage {
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let compositeFilter = CIFilter(name: "CIScreenBlendMode")!
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compositeFilter.setValue(redOutputImage, forKey: kCIInputImageKey)
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compositeFilter.setValue(blueOutputImage, forKey: kCIInputBackgroundImageKey)
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let sharpenedFilter = CIFilter(name: "CISharpenLuminance")!
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sharpenedFilter.setValue(compositeFilter.outputImage, forKey: kCIInputImageKey)
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sharpenedFilter.setValue(2, forKey: kCIInputSharpnessKey)
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lastImg = sharpenedFilter.outputImage!
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}
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return lastImg!
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}
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//将两张图片合成一张图片 SBS
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func joinImages_sbs( left:UIImage, right:UIImage,imgWidth:CGFloat,imgHeight:CGFloat) -> CIImage {
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let newImageSize = CGSize(width:imgWidth, height: imgHeight);
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UIGraphicsBeginImageContextWithOptions(newImageSize, false, 1);
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left.draw(in: CGRect(x:0, y:0, width:imgWidth/2, height:imgHeight))
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right.draw(in: CGRect(x:imgWidth/2, y:0, width:imgWidth/2, height:imgHeight))
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let image = UIGraphicsGetImageFromCurrentImageContext()!
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UIGraphicsEndImageContext();
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let ci = CIImage(cgImage: image.cgImage!)
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return ci
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}
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//FSBS
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func joinImages_fsbs( left:UIImage, right:UIImage,imgWidth:CGFloat,imgHeight:CGFloat) -> CIImage {
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let newImageSize = CGSize(width:imgWidth, height: imgHeight);//在播放过程中，务必保证宽、高尺寸不变
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UIGraphicsBeginImageContextWithOptions(newImageSize, false, 1);
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left.draw(in: CGRect(x:0, y:imgHeight/4, width:imgWidth/2, height:imgHeight/2))
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right.draw(in: CGRect(x:imgWidth/2, y:imgHeight/4, width:imgWidth/2, height:imgHeight/2))
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let image = UIGraphicsGetImageFromCurrentImageContext()!
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UIGraphicsEndImageContext();
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let ci = CIImage(cgImage: image.cgImage!)
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return ci
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}
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//将两张图片合成一张图片 OU
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func joinImages_ou( left:UIImage, right:UIImage,imgWidth:CGFloat,imgHeight:CGFloat) -> CIImage {
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let newImageSize = CGSize(width:imgWidth, height: imgHeight);
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UIGraphicsBeginImageContextWithOptions(newImageSize, false, 1);
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left.draw(in: CGRect(x:0, y:0, width:imgWidth, height:imgHeight/2))
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right.draw(in: CGRect(x:0, y:imgHeight/2, width:imgWidth, height:imgHeight/2))
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let image = UIGraphicsGetImageFromCurrentImageContext()!
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UIGraphicsEndImageContext();
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let ci = CIImage(cgImage: image.cgImage!)
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return ci
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}
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//将两张图片合成一张图片
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func joinImages( leftImage:CIImage, rightImage:CIImage) -> CIImage {
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let left = UIImage(ciImage: leftImage )
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let right = UIImage(ciImage: rightImage )
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let imageWidth = left.size.width/2 + right.size.width/2
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let imageHeight = left.size.height/2
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let newImageSize = CGSize(width:imageWidth, height: left.size.height);
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UIGraphicsBeginImageContextWithOptions(newImageSize, false, 1);
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left.draw(in: CGRect(x:0, y:imageHeight/2, width:imageWidth/2, height:imageHeight))
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right.draw(in: CGRect(x:imageWidth/2, y:imageHeight/2, width:imageWidth/2, height:imageHeight))
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let image = UIGraphicsGetImageFromCurrentImageContext()!
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UIGraphicsEndImageContext();
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let ci = CIImage(cgImage: image.cgImage!)
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return ci
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}
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}
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