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Remove SampleWriter.duration

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Sami Samhuri 2024-10-20 17:22:04 -07:00
parent d995fbab46
commit d82bd64635
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1 changed files with 8 additions and 10 deletions
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18
Sources/SJSAssetExportSession/SampleWriter.swift
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@ -37,7 +37,6 @@ actor SampleWriter {
private let audioMix: AVAudioMix?
private let videoOutputSettings: [String: any Sendable]
private let videoComposition: AVVideoComposition?
private let duration: CMTime
private let timeRange: CMTimeRange
// MARK: Internal state
@ -66,11 +65,6 @@ actor SampleWriter {
(progressStream, progressContinuation) = AsyncStream<Float>.makeStream()
let duration = if let timeRange {
timeRange.duration
} else {
try await asset.load(.duration)
}
let reader = try AVAssetReader(asset: asset)
if let timeRange {
reader.timeRange = timeRange
@ -102,8 +96,11 @@ actor SampleWriter {
self.videoComposition = videoComposition
self.reader = reader
self.writer = writer
self.duration = duration
self.timeRange = timeRange ?? CMTimeRange(start: .zero, duration: duration)
self.timeRange = if let timeRange {
timeRange
} else {
try await CMTimeRange(start: .zero, duration: asset.load(.duration))
}
try await setUpAudio(audioTracks: audioTracks)
try await setUpVideo(videoTracks: videoTracks)
@ -287,8 +284,9 @@ actor SampleWriter {
// Only yield progress values for video. Audio is insignificant in comparison.
if output == videoOutput {
let samplePresentationTime = CMSampleBufferGetPresentationTimeStamp(sampleBuffer) - timeRange.start
let progress = Float(samplePresentationTime.seconds / duration.seconds)
let endTime = CMSampleBufferGetPresentationTimeStamp(sampleBuffer)
let samplePresentationTime = endTime - timeRange.start
let progress = Float(samplePresentationTime.seconds / timeRange.duration.seconds)
progressContinuation.yield(progress)
}