dom/workers/test/fileSlice_worker.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/dom/workers/test/fileSlice_worker.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,27 @@
     1.4 +/**
     1.5 + * Expects an object containing a blob, a start offset, an end offset
     1.6 + * and an optional content type to slice the blob. Returns an object
     1.7 + * containing the size and type of the sliced blob.
     1.8 + */
     1.9 +onmessage = function(event) {
    1.10 +  var blob = event.data.blob;
    1.11 +  var start = event.data.start;
    1.12 +  var end = event.data.end;
    1.13 +  var contentType = event.data.contentType;
    1.14 +
    1.15 +  var slicedBlob;
    1.16 +  if (contentType == undefined && end == undefined) {
    1.17 +    slicedBlob = blob.slice(start);
    1.18 +  } else if (contentType == undefined) {
    1.19 +    slicedBlob = blob.slice(start, end);
    1.20 +  } else {
    1.21 +    slicedBlob = blob.slice(start, end, contentType);
    1.22 +  }
    1.23 +
    1.24 +  var rtnObj = new Object();
    1.25 +
    1.26 +  rtnObj.size = slicedBlob.size;
    1.27 +  rtnObj.type = slicedBlob.type;
    1.28 +
    1.29 +  postMessage(rtnObj);
    1.30 +};

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