I would like to avoid downloading the image file as the image will only be used once for that request and will be destroyed after the contact has been saved. Also because there will be simulateous requests to my server from many different clients I think its best to send the base64 or binary data.
The image and the base64 data are the same. When i tried to show the blobData it have me an unspecified type error. So I called :
var baseBlob = blackberry.utils.blobToString(blobData);
alert(baseBlob);
Which gave me some data starting with:
PNG
....
If i decoded my base64 data I also got the same
PNG
....
So maybe the question is how can I take my decoded base64 data and put it back into a blob which the system can use.
blackberry.utils.stringToBlob(data, "binary") was a hack which tim implemented on the playbook sdk. I couldnt find the files/parts of the ext which needed replacing to take advantage of this hack. So using the binary call I'm stuck.
What I am thinking now as I can't think of how to convert the output of blobToString back to stringToBlob is using the binary data from the image file directly and recieve that through an xmlhttp request.
I think if I capture the php buffer for the image data(which is coming from a cropped image) it should be the binary image data, so I can store this in a string, insert into mySQL db and then call when the request is recieved from the client. I don't know if I will need to encode/decode the data but worth a shot for the short term.
Is decoding the base64 decoding to binary?? I am a little confused on all this decoding/encoding and I think thats the cause of all this fuss.
Here is my base64 decode function:
var keyStr = "ABCDEFGHIJKLMNOP" +
"QRSTUVWXYZabcdef" +
"ghijklmnopqrstuv" +
"wxyz0123456789+/" +
"=";
function decode64(input) {
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
var base64test = /[^A-Za-z0-9\+\/\=]/g;
if (base64test.exec(input)) {
alert("There were invalid base64 characters in the input text.\n" +
"Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
"Expect errors in decoding.");
}
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
do {
enc1 = keyStr.indexOf(input.charAt(i++));
enc2 = keyStr.indexOf(input.charAt(i++));
enc3 = keyStr.indexOf(input.charAt(i++));
enc4 = keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
} while (i < input.length);
return unescape(output);
}
