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Use asynchronous thumbnail generation for round videos

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This commit is contained in:
Ilya Laktyushin 2024-01-22 15:38:06 +04:00
parent bcfb9a969d
commit 2bbb9fd1f3
1 changed files with 85 additions and 66 deletions
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25
submodules/TelegramUI/Components/VideoMessageCameraScreen/Sources/VideoMessageCameraScreen.swift
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@ -1508,18 +1508,36 @@ public class VideoMessageCameraScreen: ViewController {
let dimensions = PixelDimensions(width: 400, height: 400)
var thumbnailImage = video.thumbnail
let thumbnailImage: Signal<UIImage, NoError>
if startTime > 0.0 {
thumbnailImage = Signal { subscriber in
let composition = composition(with: results)
let imageGenerator = AVAssetImageGenerator(asset: composition)
imageGenerator.maximumSize = dimensions.cgSize
imageGenerator.appliesPreferredTrackTransform = true
if let cgImage = try? imageGenerator.copyCGImage(at: CMTime(seconds: startTime, preferredTimescale: composition.duration.timescale), actualTime: nil) {
thumbnailImage = UIImage(cgImage: cgImage)
imageGenerator.generateCGImagesAsynchronously(forTimes: [NSValue(time: CMTime(seconds: startTime, preferredTimescale: composition.duration.timescale))], completionHandler: { _, image, _, _, _ in
if let image {
subscriber.putNext(UIImage(cgImage: image))
} else {
subscriber.putNext(video.thumbnail)
}
subscriber.putCompletion()
})
return ActionDisposable {
imageGenerator.cancelAllCGImageGeneration()
}
}
} else {
thumbnailImage = .single(video.thumbnail)
}
let _ = (thumbnailImage
|> deliverOnMainQueue).startStandalone(next: { [weak self] thumbnailImage in
guard let self else {
return
}
let values = MediaEditorValues(peerId: self.context.account.peerId, originalDimensions: dimensions, cropOffset: .zero, cropRect: CGRect(origin: .zero, size: dimensions.cgSize), cropScale: 1.0, cropRotation: 0.0, cropMirroring: false, cropOrientation: nil, gradientColors: nil, videoTrimRange: self.node.previewState?.trimRange, videoIsMuted: false, videoIsFullHd: false, videoIsMirrored: false, videoVolume: nil, additionalVideoPath: nil, additionalVideoIsDual: false, additionalVideoPosition: nil, additionalVideoScale: nil, additionalVideoRotation: nil, additionalVideoPositionChanges: [], additionalVideoTrimRange: nil, additionalVideoOffset: nil, additionalVideoVolume: nil, nightTheme: false, drawing: nil, entities: [], toolValues: [:], audioTrack: nil, audioTrackTrimRange: nil, audioTrackOffset: nil, audioTrackVolume: nil, audioTrackSamples: nil, qualityPreset: .videoMessage)
var resourceAdjustments: VideoMediaResourceAdjustments? = nil
@ -1581,6 +1599,7 @@ public class VideoMessageCameraScreen: ViewController {
bubbleUpEmojiOrStickersets: []
), silentPosting, scheduleTime)
})
})
}
private var waitingForNextResult = false