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| public func transformOutgoingMessageMedia(postbox: Postbox, network: Network, media: AnyMediaReference, opportunistic: Bool) -> Signal<AnyMediaReference?, NoError> {
switch media.media {
// file
case let file as TelegramMediaFile:
let signal = Signal<MediaResourceData, NoError> { subscriber in
let fetch = fetchedMediaResource(mediaBox: postbox.mediaBox, reference: media.resourceReference(file.resource)).start()
let data = postbox.mediaBox.resourceData(file.resource, option: .complete(waitUntilFetchStatus: true)).start(next: { next in
subscriber.putNext(next)
if next.complete {
subscriber.putCompletion()
}
})
return ActionDisposable {
fetch.dispose()
data.dispose()
}
}
let result: Signal<MediaResourceData, NoError>
if opportunistic {
result = signal |> take(1)
} else {
result = signal
}
return result
|> mapToSignal { data -> Signal<AnyMediaReference?, NoError> in
if data.complete {
if file.mimeType.hasPrefix("image/") {
return Signal { subscriber in
if let fullSizeData = try? Data(contentsOf: URL(fileURLWithPath: data.path)) {
let options = NSMutableDictionary()
options[kCGImageSourceShouldCache as NSString] = false as NSNumber
if let imageSource = CGImageSourceCreateWithData(fullSizeData as CFData, nil), let cgImage = CGImageSourceCreateImageAtIndex(imageSource, 0, options as CFDictionary) {
let imageOrientation = imageOrientationFromSource(imageSource)
let image = UIImage(cgImage: cgImage, scale: 1.0, orientation: imageOrientation)
if let scaledImage = generateImage(image.size.fitted(CGSize(width: 320.0, height: 320.0)), contextGenerator: { size, context in
context.setBlendMode(.copy)
drawImage(context: context, image: image.cgImage!, orientation: image.imageOrientation, in: CGRect(origin: CGPoint(), size: size))
}, scale: 1.0), let thumbnailData = scaledImage.jpegData(compressionQuality: 0.6) {
/*if #available(iOSApplicationExtension 11.0, iOS 11.0, *) {
#if DEBUG
if true, let heicData = compressImage(scaledImage, quality: 0.7) {
print("data \(thumbnailData.count), heicData \(heicData.count)")
}
#endif
}*/
let imageDimensions = CGSize(width: image.size.width * image.scale, height: image.size.height * image.scale)
let thumbnailResource = LocalFileMediaResource(fileId: arc4random64())
postbox.mediaBox.storeResourceData(thumbnailResource.id, data: thumbnailData)
let scaledImageSize = CGSize(width: scaledImage.size.width * scaledImage.scale, height: scaledImage.size.height * scaledImage.scale)
var attributes = file.attributes
loop: for i in 0 ..< attributes.count {
switch attributes[i] {
case .ImageSize:
attributes.remove(at: i)
break loop
default:
break
}
}
attributes.append(.ImageSize(size: imageDimensions))
let updatedFile = file.withUpdatedSize(data.size).withUpdatedPreviewRepresentations([TelegramMediaImageRepresentation(dimensions: scaledImageSize, resource: thumbnailResource)]).withUpdatedAttributes(attributes)
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
} else {
let updatedFile = file.withUpdatedSize(data.size)
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
}
} else {
let updatedFile = file.withUpdatedSize(data.size)
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
}
} else {
let updatedFile = file.withUpdatedSize(data.size)
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
}
return EmptyDisposable
} |> runOn(opportunistic ? Queue.mainQueue() : Queue.concurrentDefaultQueue())
} else if file.mimeType.hasPrefix("video/") {// video
return Signal { subscriber in
// generate first frame
if let scaledImage = generateVideoFirstFrame(data.path, maxDimensions: CGSize(width: 320.0, height: 320.0)), let thumbnailData = scaledImage.jpegData(compressionQuality: 0.6) {
let thumbnailResource = LocalFileMediaResource(fileId: arc4random64())
postbox.mediaBox.storeResourceData(thumbnailResource.id, data: thumbnailData)
let scaledImageSize = CGSize(width: scaledImage.size.width * scaledImage.scale, height: scaledImage.size.height * scaledImage.scale)
let updatedFile = file.withUpdatedSize(data.size).withUpdatedPreviewRepresentations([TelegramMediaImageRepresentation(dimensions: scaledImageSize, resource: thumbnailResource)])
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
} else {
let updatedFile = file.withUpdatedSize(data.size)
subscriber.putNext(.standalone(media: updatedFile))
subscriber.putCompletion()
}
return EmptyDisposable
} |> runOn(opportunistic ? Queue.mainQueue() : Queue.concurrentDefaultQueue())
} else {
let updatedFile = file.withUpdatedSize(data.size)
return .single(.standalone(media: updatedFile))
}
} else if opportunistic {
return .single(nil)
} else {
return .complete()
}
}
// image
case let image as TelegramMediaImage:
if let representation = largestImageRepresentation(image.representations) {
let signal = Signal<MediaResourceData, NoError> { subscriber in
let fetch = fetchedMediaResource(mediaBox: postbox.mediaBox, reference: media.resourceReference(representation.resource)).start()
let data = postbox.mediaBox.resourceData(representation.resource, option: .complete(waitUntilFetchStatus: true)).start(next: { next in
subscriber.putNext(next)
if next.complete {
subscriber.putCompletion()
}
})
return ActionDisposable {
fetch.dispose()
data.dispose()
}
}
let result: Signal<MediaResourceData, NoError>
if opportunistic {
result = signal
|> take(1)
} else {
result = signal
}
return result
|> mapToSignal { data -> Signal<AnyMediaReference?, NoError> in
if data.complete {
if let smallest = smallestImageRepresentation(image.representations), smallest.dimensions.width > 100.0 || smallest.dimensions.height > 100.0 {
let smallestSize = smallest.dimensions.fitted(CGSize(width: 320.0, height: 320.0))
if let fullImage = UIImage(contentsOfFile: data.path), let smallestImage = generateScaledImage(image: fullImage, size: smallestSize, scale: 1.0), let smallestData = compressImageToJPEG(smallestImage, quality: 0.7) {
var representations = image.representations
let thumbnailResource = LocalFileMediaResource(fileId: arc4random64())
postbox.mediaBox.storeResourceData(thumbnailResource.id, data: smallestData)
representations.append(TelegramMediaImageRepresentation(dimensions: smallestSize, resource: thumbnailResource))
let updatedImage = TelegramMediaImage(imageId: image.imageId, representations: representations, immediateThumbnailData: image.immediateThumbnailData, reference: image.reference, partialReference: image.partialReference)
return .single(.standalone(media: updatedImage))
}
}
return .single(nil)
} else if opportunistic {
return .single(nil)
} else {
return .complete()
}
}
} else {
return .single(nil)
}
default:
return .single(nil)
}
}
|
