iOS Question Strange thing when converting Bitmap to Bytes

[narek adonts]

Hi,

I am using this Sub to convert a bitmap to bytes.

Sub BitmapToBytes(Image As Bitmap) As Byte()
Dim out As OutputStream
Dim bb() As Byte
out.InitializeToBytesArray(0)
Image.WriteToStream(out,100,"JPEG")
out.Close
bb=out.ToBytesArray
Log(bb.Length)
Return bb

End Sub

The strange thing is for a Image of 1MB after converting to bytes it become 3.4MB

Can someone check it please and advise a solution. Thank you.

 

[JanPRO]

I think it happends, because JPEG is a compressed graphic format. Your code looks fine

 

[narek adonts]

Yes but if it compressed it should be less not 3 times more.

 

[Erel]

The only way to change the size is by reducing the quality. However if you have access to the original file then you can use it instead.

The actual conversion is done with a call to UIImageJPEGRepresentation API.

 

[narek adonts]

the problem is that I want to use the same image size as it is.

When I am trying to send the image by Mail app it says that actual size is 1MB when trying to convert the same image to bytes with UIImageJPEGRepresentation the Bytes length is more then 3MB.