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session-ios
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// FREEBIE
pull/1/head
Michael Kirk 7 years ago
parent 47e92dbad5
commit 813f4e474e
2 changed files with 40 additions and 21 deletions
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11
SignalMessaging/attachments/SignalAttachment.swift
Unescape Escape View File

@ -582,7 +582,7 @@ public class SignalAttachment: NSObject {
}
attachment.cachedImage = image
if isInputImageValidOutputImage(image: image, dataSource: dataSource, dataUTI: dataUTI, imageQuality:imageQuality) {
if isValidOutputImage(image: image, dataSource: dataSource, dataUTI: dataUTI, imageQuality:imageQuality) {
if let sourceFilename = dataSource.sourceFilename,
let sourceFileExtension = sourceFilename.fileExtension,
["heic", "heif"].contains(sourceFileExtension.lowercased()) {
@ -613,7 +613,7 @@ public class SignalAttachment: NSObject {
// If the proposed attachment already conforms to the
// file size and content size limits, don't recompress it.
private class func isInputImageValidOutputImage(image: UIImage?, dataSource: DataSource?, dataUTI: String, imageQuality: TSImageQuality) -> Bool {
private class func isValidOutputImage(image: UIImage?, dataSource: DataSource?, dataUTI: String, imageQuality: TSImageQuality) -> Bool {
guard let image = image else {
return false
}
@ -788,7 +788,7 @@ public class SignalAttachment: NSObject {
return attachment
}
if !isInputVideoValidOutputVideo(dataSource: dataSource, dataUTI: dataUTI) {
if !isValidOutputVideo(dataSource: dataSource, dataUTI: dataUTI) {
owsFail("building video with invalid output, migrate to async API using compressVideoAsMp4")
}
@ -854,6 +854,7 @@ public class SignalAttachment: NSObject {
return
}
dataSource.setShouldDeleteOnDeallocation()
dataSource.sourceFilename = mp4Filename
let attachment = SignalAttachment(dataSource: dataSource, dataUTI: kUTTypeMPEG4 as String)
@ -890,7 +891,7 @@ public class SignalAttachment: NSObject {
return false
}
guard isInputVideoValidOutputVideo(dataSource: dataSource, dataUTI: dataUTI) else {
guard isValidOutputVideo(dataSource: dataSource, dataUTI: dataUTI) else {
// found a video which needs to be converted
return true
}
@ -899,7 +900,7 @@ public class SignalAttachment: NSObject {
return false
}
private class func isInputVideoValidOutputVideo(dataSource: DataSource?, dataUTI: String) -> Bool {
private class func isValidOutputVideo(dataSource: DataSource?, dataUTI: String) -> Bool {
guard let dataSource = dataSource else {
return false
}

50
SignalShareExtension/ShareViewController.swift
Unescape Escape View File

@ -72,7 +72,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
self.loadViewController = loadViewController
// Don't display load screen immediately, in hopes that we can avoid it altogether.
after(seconds: 2).then { () -> Void in
after(seconds: 0.5).then { () -> Void in
guard self.presentedViewController == nil else {
Logger.debug("\(self.logTag) setup completed quickly, no need to present load view controller.")
return
@ -453,20 +453,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
return promise.then { (itemUrl: URL) -> Promise<SignalAttachment> in
let url: URL = try {
// iOS converts at least some video formats (e.g. com.apple.quicktime-movie) into mp4s as part of the
// NSItemProvider `loadItem` API.
// However, for some reason, AVFoundation operations such as generating a preview image and playing
// the url in the AVMoviePlayer fail on these converted formats until unless we first copy the media
// into our container. (These operations succeed when sending a non-converted mp4 (e.g. one received,
// saved, and resent in Signal)
//
// I don't understand why this is, and I haven't found any relevant documentation in the NSItemProvider
// or AVFoundation docs.
//
// I *did* verify that the size and sah256 sum of the original url matches that of the copied url.
// Perhaps the AVFoundation API's require some extra file system permssion we don't have in the
// passed through URL.
if MIMETypeUtil.isSupportedVideoFile(itemUrl.path) {
if self.isVideoNeedingRelocation(itemProvider: itemProvider, itemUrl: itemUrl) {
return try SignalAttachment.copyToVideoTempDir(url: itemUrl)
} else {
return itemUrl
@ -497,7 +484,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
// TODO: How can we move waiting for this export to the end of the share flow rather than having to do it up front?
// Ideally we'd be able to start it here, and not block the UI on conversion unless there's still work to be done
// when the user hit's "send".
// when the user hits "send".
if let exportSession = exportSession {
let progressPoller = ProgressPoller(timeInterval: 0.1, ratioCompleteBlock: { return exportSession.progress })
self.progressPoller = progressPoller
@ -518,6 +505,37 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
return Promise(value: attachment)
}
}
// Some host apps (e.g. iOS Photos.app) converts some video formats (e.g. com.apple.quicktime-movie)
// into mp4s as part of the NSItemProvider `loadItem` API.
//
// However, when using this url to the converted item, AVFoundation operations such as generating a
// preview image and playing the url in the AVMoviePlayer fails with an unhelpful error: "The operation could not be completed"
//
// We can work around this by first copying the media into our container.
//
// I don't understand why this is, and I haven't found any relevant documentation in the NSItemProvider
// or AVFoundation docs.
//
// Notes:
//
// These operations succeed when sending a video which initially existed on disk as an mp4.
// (e.g. Alice sends a video to Bob through the main app, which ensures it's an mp4. Bob saves it, then re-shares it)
//
// I *did* verify that the size and SHA256 sum of the original url matches that of the copied url. So there
// is no difference between the contents of the file, yet one works one doesn't.
// Perhaps the AVFoundation APIs require some extra file system permssion we don't have in the
// passed through URL.
private func isVideoNeedingRelocation(itemProvider: NSItemProvider, itemUrl: URL) -> Bool {
guard MIMETypeUtil.isSupportedVideoFile(itemUrl.path) else {
// not a video, isn't affected
return false
}
// If video file already existed on disk as an mp4, then the host app didn't need to
// apply any conversion, so no need to relocate the app.
return !itemProvider.registeredTypeIdentifiers.contains(kUTTypeMPEG4 as String)
}
}
// Exposes a Progress object, whose progress is updated by polling the return of a given block

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