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24 lines
1.1 KiB
Swift
24 lines
1.1 KiB
Swift
import Foundation
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import UIKit
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import AnimationCache
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import Display
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import RLottieBinding
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import GZip
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public func cacheLottieAnimation(data: Data, width: Int, height: Int, writer: AnimationCacheItemWriter) {
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let decompressedData = TGGUnzipData(data, 512 * 1024) ?? data
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guard let animation = LottieInstance(data: decompressedData, fitzModifier: .none, colorReplacements: nil, cacheKey: "") else {
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writer.finish()
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return
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}
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let size = CGSize(width: width, height: height)
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let context = DrawingContext(size: size, scale: 1.0, opaque: false, clear: true)
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let frameDuration = 1.0 / Double(animation.frameRate)
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for i in 0 ..< animation.frameCount {
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animation.renderFrame(with: i, into: context.bytes.assumingMemoryBound(to: UInt8.self), width: Int32(context.scaledSize.width), height: Int32(context.scaledSize.height), bytesPerRow: Int32(context.bytesPerRow))
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writer.add(bytes: context.bytes, length: context.length, width: Int(context.scaledSize.width), height: Int(context.scaledSize.height), bytesPerRow: Int(context.bytesPerRow), duration: frameDuration)
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}
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writer.finish()
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}
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