Tag: 金属金属

如何将MTLTexture转换为CVpixelBuffer写入AVAssetWriter？

我有一个要求，在实时video应用filter，我想在金属做。 但是，在将滤镜编码到目标滤镜之后，我遇到了将MTLTexture转换为CVPixelBuffer的问题。 参考（ https://github.com/oklyc/MetalCameraSample-master-2 ） 这是我的代码。 if let pixelBuffer = pixelBuffer { CVPixelBufferLockBaseAddress(pixelBuffer, CVPixelBufferLockFlags.init(rawValue: 0)) let region = MTLRegionMake2D(0, 0, Int(currentDrawable.layer.drawableSize.width), Int(currentDrawable.layer.drawableSize.height)) let bytesPerPixel = 4; let bytesPerRow = CGFloat(bytesPerPixel) * currentDrawable.layer.drawableSize.width let tempBuffer = CVPixelBufferGetBaseAddress(pixelBuffer) destinationTexture.getBytes(tempBuffer!, bytesPerRow: Int(bytesPerRow), from: region1, mipmapLevel: 0) let image = self.imageFromCVPixelBuffer(buffer: pixelBuffer) CVPixelBufferUnlockBaseAddress(pixelBuffer, CVPixelBufferLockFlags.init(rawValue: 0)) } imageFromCVPixelBuffer方法看起来像这样。 func imageFromCVPixelBuffer(buffer: […]