ios - Swift - Saving images as bitmap -


i trying save image bitmap using avfoundation. right using jpeg, , wondering need change in order save image bitmap. side note - plan on storing byte[] onto our google app engine , device (android or ios) need image, able pull byte[] database , convert image on device. valid way of going storing images? if not suggest?

here code saving image jpeg 

@ibaction func didpresstakephoto(sender: anyobject) {      if let videoconnection = stillimageoutput!.connectionwithmediatype(avmediatypevideo) {         videoconnection.videoorientation = avcapturevideoorientation.portrait         stillimageoutput?.capturestillimageasynchronouslyfromconnection(videoconnection, completionhandler: {(samplebuffer, error) in             if (samplebuffer != nil) {                 var imagedata = avcapturestillimageoutput.jpegstillimagensdatarepresentation(samplebuffer)                 var dataprovider = cgdataprovidercreatewithcfdata(imagedata)                 var cgimageref = cgimagecreatewithjpegdataprovider(dataprovider, nil, true, kcgrenderingintentdefault)                  //change orientation based on if camera front or                  if self.selectedcamera == 1 {                     var image = uiimage(cgimage: cgimageref, scale: 1.0, orientation: uiimageorientation.leftmirrored)                     self.capturedimage.image = image                 } else {                     var image = uiimage(cgimage: cgimageref, scale: 1.0, orientation:uiimageorientation.right)                     self.capturedimage.image = image                 }


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