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More granular video scrubbing

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This commit is contained in:
Peter 2019-07-17 17:45:23 +01:00
parent 0bf61a2794
commit 6f268d7998
3 changed files with 18 additions and 10 deletions
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13
submodules/MediaPlayer/Sources/UniversalSoftwareVideoSource.swift
View File

@ -19,11 +19,18 @@ private func readPacketCallback(userData: UnsafeMutableRawPointer?, buffer: Unsa
data = context.mediaBox.resourceData(context.fileReference.media.resource, size: context.size, in: requestRange, mode: .partial)
let requiredDataIsNotLocallyAvailable = context.requiredDataIsNotLocallyAvailable
var fetchedData: Data?
let fetchDisposable = MetaDisposable()
let isInitialized = context.videoStream != nil
let mediaBox = context.mediaBox
let reference = context.fileReference.resourceReference(context.fileReference.media.resource)
let disposable = data.start(next: { data in
if data.count == readCount {
fetchedData = data
semaphore.signal()
} else {
if isInitialized {
fetchDisposable.set(fetchedMediaResource(mediaBox: mediaBox, reference: reference, ranges: [(requestRange, .maximum)]).start())
}
requiredDataIsNotLocallyAvailable?()
}
})
@ -32,15 +39,11 @@ private func readPacketCallback(userData: UnsafeMutableRawPointer?, buffer: Unsa
semaphore.signal()
}
})
var fetchDisposable: Disposable?
if context.videoStream != nil {
fetchDisposable = fetchedMediaResource(mediaBox: context.mediaBox, reference: context.fileReference.resourceReference(context.fileReference.media.resource), ranges: [(requestRange, .elevated)]).start()
}
semaphore.wait()
disposable.dispose()
cancelDisposable.dispose()
fetchDisposable?.dispose()
fetchDisposable.dispose()
if let fetchedData = fetchedData {
fetchedData.withUnsafeBytes { (bytes: UnsafePointer<UInt8>) -> Void in

1
submodules/Postbox/Postbox/MediaBox.swift
View File

@ -70,6 +70,7 @@ public protocol MediaResourceDataFetchCopyLocalItem {
public enum MediaBoxFetchPriority: Int32 {
case `default` = 0
case elevated = 1
case maximum = 2
}
public enum MediaResourceDataFetchResult {

14
submodules/TelegramCore/TelegramCore/MultipartFetch.swift
View File

@ -400,7 +400,7 @@ private enum MultipartFetchSource {
private final class MultipartFetchManager {
let parallelParts: Int
let defaultPartSize = 128 * 1024
let partAlignment = 128 * 1024
let partAlignment = 4 * 1024
var resource: TelegramMediaResource
var resourceReference: MediaResourceReference?
@ -571,15 +571,19 @@ private final class MultipartFetchManager {
}
while !intervalsToFetch.isEmpty && self.fetchingParts.count < self.parallelParts && !self.reuploadingToCdn && !self.revalidatingMediaReference {
var elevatedIndices: [Int] = []
var indicesByPriority: [MediaBoxFetchPriority: [Int]] = [:]
for i in 0 ..< intervalsToFetch.count {
if case .elevated = intervalsToFetch[i].1 {
elevatedIndices.append(i)
if indicesByPriority[intervalsToFetch[i].1] == nil {
indicesByPriority[intervalsToFetch[i].1] = []
}
indicesByPriority[intervalsToFetch[i].1]!.append(i)
}
let currentIntervalIndex: Int
if !elevatedIndices.isEmpty {
if let maxIndices = indicesByPriority[.maximum], !maxIndices.isEmpty {
currentIntervalIndex = maxIndices[self.nextFetchingPartId % maxIndices.count]
} else if let elevatedIndices = indicesByPriority[.elevated], !elevatedIndices.isEmpty {
currentIntervalIndex = elevatedIndices[self.nextFetchingPartId % elevatedIndices.count]
} else {
currentIntervalIndex = self.nextFetchingPartId % intervalsToFetch.count