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| | | |
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| | | private var currentPixelBuffer: CVPixelBuffer? |
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| | | private let textureCache: CVMetalTextureCache |
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| | | private var rotate:Int = 0; |
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| | | |
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| | | init(mtkView: MTKView) { |
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| | | guard let device = MTLCreateSystemDefaultDevice(), |
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| | |
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| | | let drawableSize = view.drawableSize |
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| | | guard drawableSize.width > 0, drawableSize.height > 0 else { return } |
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| | | |
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| | | // 加方向修正：顺时针旋转90度 |
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| | | var ciImage = CIImage(cvPixelBuffer: pixelBuffer).oriented(.right) |
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| | | // 加方向修正 |
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| | | var orien:CGImagePropertyOrientation = .up; |
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| | | switch self.rotate{ |
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| | | case 90: |
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| | | orien = .right; |
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| | | break; |
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| | | case 180: |
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| | | orien = .down; |
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| | | break; |
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| | | case 270: |
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| | | orien = .left; |
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| | | break; |
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| | | default: |
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| | | orien = .up; |
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| | | } |
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| | | //print(" roate = \(rotate)") |
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| | | var ciImage = CIImage(cvPixelBuffer: pixelBuffer).oriented(orien) |
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| | | |
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| | | // 等比缩放后居中 |
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| | | let sourceExtent = ciImage.extent |
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| | |
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| | | //刷新 |
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| | | |
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| | | } |
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| | | |
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| | | func updateRotate(angle:Int){ |
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| | | rotate = angle; |
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| | | } |
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| | | |
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| | | } |
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