segment-controller.js
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(function(window) {
window.videojs.hls.SegmentController = function(){
var self = this;
self.url;
self.requestTimestamp;
self.responseTimestamp;
self.data;
self.onDataCallback;
self.onErrorCallback;
self.onUpdateCallback;
self.loadSegment = function ( segmentUrl, onDataCallback, onErrorCallback, onUpdateCallback ) {
self.url = segmentUrl;
self.onDataCallback = onDataCallback;
self.onErrorCallback = onErrorCallback;
self.onUpdateCallback = onUpdateCallback;
self.requestTimestamp = new Date().getTime();
var req = new XMLHttpRequest();
req.open('GET', segmentUrl, true);
req.responseType = 'arraybuffer';
req.onload = function(response) {
self.onSegmentLoadComplete(new Uint8Array(req.response));
};
req.send(null);
//vjs.get(segmentUrl, self.onSegmentLoadComplete, self.onSegmentLoadError);
};
self.parseSegment = function ( incomingData ) {
// Add David's code later //
console.log('got segment data', incomingData.byteLength);
self.data = {};
self.data.binaryData = incomingData;
self.data.url = self.url;
self.data.isCached = false;
self.data.requestTimestamp = self.requestTimestamp;
self.data.responseTimestamp = self.responseTimestamp;
self.data.byteLength = incomingData.byteLength;
self.data.isCached = ( parseInt(self.responseTimestamp - self.requestTimestamp) < 75 );
self.data.throughput = self.calculateThroughput(self.data.byteLength, self.requestTimestamp ,self.responseTimestamp);
return self.data;
};
self.calculateThroughput = function(dataAmount, startTime, endTime) {
return Math.round(dataAmount/(endTime-startTime)*1000)*8;
}
self.onSegmentLoadComplete = function(response) {
self.responseTimestamp = new Date().getTime();
var output = self.parseSegment(response);
if(self.onDataCallback != undefined)
{
self.onDataCallback(output);
}
};
self.onSegmentLoadError = function(err) {
if(err)
{
console.log(err.message);
}
if(self.onErrorCallback != undefined)
{
onErrorCallback((err != undefined) ? err : null);
}
};
}
})(this);