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Normalize image colorspace.

This commit is contained in:
Matthew Chen 2018-05-17 16:31:04 -04:00
parent 946240fb69
commit 0620cb60df
1 changed files with 6 additions and 10 deletions
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16
SignalMessaging/attachments/SignalAttachment.swift
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@ -772,19 +772,15 @@ public class SignalAttachment: NSObject {
assert(newSize.width <= maxSize)
assert(newSize.height <= maxSize)
let bitsPerComponent = cgImage.bitsPerComponent
let bytesPerRow = cgImage.bytesPerRow
guard let colorSpace = cgImage.colorSpace else {
owsFail("\(logTag) cgImage missing colorSpace.")
return nil
}
let bitmapInfo = cgImage.bitmapInfo
let colorSpace = CGColorSpaceCreateDeviceRGB()
let bitmapInfo: CGBitmapInfo = [
CGBitmapInfo(rawValue: CGImageByteOrderInfo.orderDefault.rawValue),
CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)]
guard let context = CGContext.init(data: nil,
width: Int(newSize.width),
height: Int(newSize.height),
bitsPerComponent: bitsPerComponent,
bytesPerRow: bytesPerRow,
bitsPerComponent: 8,
bytesPerRow: 0,
space: colorSpace,
bitmapInfo: bitmapInfo.rawValue) else {
owsFail("\(logTag) could not create CGContext.")