2 * Expects an object containing a blob, a start offset, an end offset
3 * and an optional content type to slice the blob. Returns an object
4 * containing the size and type of the sliced blob.
6 onmessage = function (event) {
7 var blob = event.data.blob;
8 var start = event.data.start;
9 var end = event.data.end;
10 var contentType = event.data.contentType;
13 if (contentType == undefined && end == undefined) {
14 slicedBlob = blob.slice(start);
15 } else if (contentType == undefined) {
16 slicedBlob = blob.slice(start, end);
18 slicedBlob = blob.slice(start, end, contentType);
21 var rtnObj = new Object();
23 rtnObj.size = slicedBlob.size;
24 rtnObj.type = slicedBlob.type;