зеркало из https://github.com/mozilla/gecko-dev.git
Bug 792935 - Test to detect DASH stream switching r=cpearce
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884628e108
Коммит
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@ -343,6 +343,9 @@ ifdef MOZ_DASH
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MOCHITEST_FILES += \
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test_can_play_type_dash.html \
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dash/dash-manifest.mpd \
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dash/dash-manifest-sjs.mpd \
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test_dash_detect_stream_switch.html \
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dash_detect_stream_switch.sjs \
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dash/dash-webm-video-320x180.webm \
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dash/dash-webm-video-428x240.webm \
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dash/dash-webm-audio-128k.webm \
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@ -0,0 +1,35 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<MPD
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="urn:mpeg:DASH:schema:MPD:2011"
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xsi:schemaLocation="urn:mpeg:DASH:schema:MPD:2011"
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type="static"
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mediaPresentationDuration="PT3.958S"
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minBufferTime="PT1S"
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profiles="urn:webm:dash:profile:webm-on-demand:2012">
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<BaseURL>./dash_detect_stream_switch.sjs?name=</BaseURL>
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<Period id="0" start="PT0S" duration="PT3.958S" >
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<AdaptationSet id="0" mimeType="video/webm" codecs="vp8" lang="eng" subsegmentAlignment="true" subsegmentStartsWithSAP="1" bitstreamSwitching="true">
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<Representation id="0" bandwidth="54207" width="320" height="180">
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<BaseURL>dash-webm-video-320x180.webm</BaseURL>
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<SegmentBase indexRange="35090-35123">
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<Initialization range="0-228" />
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</SegmentBase>
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</Representation>
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<Representation id="1" bandwidth="78006" width="428" height="240">
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<BaseURL>dash-webm-video-428x240.webm</BaseURL>
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<SegmentBase indexRange="50173-50206">
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<Initialization range="0-228" />
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</SegmentBase>
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</Representation>
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</AdaptationSet>
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<AdaptationSet id="1" mimeType="audio/webm" codecs="vorbis" lang="eng" audioSamplingRate="48000" subsegmentStartsWithSAP="1">
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<Representation id="2" bandwidth="57264">
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<BaseURL>dash-webm-audio-128k.webm</BaseURL>
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<SegmentBase indexRange="41927-41946">
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<Initialization range="0-4521" />
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</SegmentBase>
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</Representation>
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</AdaptationSet>
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</Period>
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</MPD>
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@ -0,0 +1,114 @@
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/* -*- Mode: JavaScript; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* dash_detect_stream_switch.sjs
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*
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* Parses requests for DASH manifests and ensures stream switching takes place
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* by verifying the subsegments downloaded and the streams they belong to.
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* If unexpected subsegments (byte ranges) are requested, the script will
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* will respond with a 404.
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*/
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var DEBUG = false;
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function parseQuery(request, key) {
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var params = request.queryString.split('&');
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if (DEBUG) {
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dump("DASH-SJS: request params = \"" + params + "\"\n");
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}
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for (var j = 0; j < params.length; ++j) {
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var p = params[j];
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if (p == key)
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return true;
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if (p.indexOf(key + "=") === 0)
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return p.substring(key.length + 1);
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if (p.indexOf("=") < 0 && key === "")
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return p;
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}
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return false;
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}
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function handleRequest(request, response)
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{
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try {
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var name = parseQuery(request, "name");
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var range = request.hasHeader("Range") ? request.getHeader("Range")
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: undefined;
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// Should not get request for 1st subsegment from 2nd stream, nor 2nd
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// subsegment from 1st stream.
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if (name == "dash-webm-video-320x180.webm" && range == "bytes=25514-32767" ||
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name == "dash-webm-video-428x240.webm" && range == "bytes=228-35852")
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{
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throw "Should not request " + name + " with byte-range " + range;
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} else {
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var rangeSplit = range.split("=");
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if (rangeSplit.length != 2) {
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throw "DASH-SJS: ERROR: invalid number of tokens (" + rangeSplit.length +
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") delimited by \'=\' in \'Range\' header.";
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}
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var offsets = rangeSplit[1].split("-");
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if (offsets.length != 2) {
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throw "DASH-SJS: ERROR: invalid number of tokens (" + offsets.length +
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") delimited by \'-\' in \'Range\' header.";
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}
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var startOffset = parseInt(offsets[0]);
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var endOffset = parseInt(offsets[1]);
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var file = Components.classes["@mozilla.org/file/directory_service;1"].
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getService(Components.interfaces.nsIProperties).
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get("CurWorkD", Components.interfaces.nsILocalFile);
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var fis = Components.classes['@mozilla.org/network/file-input-stream;1'].
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createInstance(Components.interfaces.nsIFileInputStream);
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var bis = Components.classes["@mozilla.org/binaryinputstream;1"].
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createInstance(Components.interfaces.nsIBinaryInputStream);
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var paths = "tests/content/media/test/" + name;
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var split = paths.split("/");
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for (var i = 0; i < split.length; ++i) {
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file.append(split[i]);
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}
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fis.init(file, -1, -1, false);
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// Exception: start offset should be within file bounds.
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if (startOffset > file.fileSize) {
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throw "Starting offset [" + startOffset + "] is after end of file [" +
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file.fileSize + "].";
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}
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// End offset may be too large in the MPD. Real world HTTP servers just
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// return what data they can; do the same here - reduce the end offset.
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if (endOffset >= file.fileSize) {
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if (DEBUG) {
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dump("DASH-SJS: reducing endOffset [" + endOffset + "] to fileSize [" +
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(file.fileSize-1) + "]\n");
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}
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endOffset = file.fileSize-1;
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}
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fis.seek(Components.interfaces.nsISeekableStream.NS_SEEK_SET, startOffset);
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bis.setInputStream(fis);
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var byteLengthToRead = endOffset + 1 - startOffset;
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var totalBytesExpected = byteLengthToRead + startOffset;
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if (DEBUG) {
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dump("DASH-SJS: byteLengthToRead = " + byteLengthToRead +
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" byteLengthToRead+startOffset = " + totalBytesExpected +
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" fileSize = " + file.fileSize + "\n");
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}
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var bytes = bis.readBytes(byteLengthToRead);
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response.setStatusLine(request.httpVersion, 206, "Partial Content");
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response.setHeader("Content-Length", ""+bytes.length, false);
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response.setHeader("Content-Type", "application/dash+xml", false);
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var contentRange = "bytes " + startOffset + "-" + endOffset + "/" +
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file.fileSize;
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response.setHeader("Content-Range", contentRange, false);
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response.write(bytes, bytes.length);
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bis.close();
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}
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} catch (e) {
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dump ("DASH-SJS-ERROR: " + e + "\n");
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response.setStatusLine(request.httpVersion, 404, "Not found");
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}
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}
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@ -195,6 +195,13 @@ var gInvalidTests = [
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{ name:"invalid-cmap-s1c2.opus", type:"audio/ogg; codecs=opus"},
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];
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// Files to test for stream switching. Note: media files referenced in DASH MPD
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// files should be accessed via dash_detect_stream_switch.sjs.
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var gStreamSwitchTests = [
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{ name:"dash-manifest-sjs.mpd", type:"application/dash+xml",
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width:320, height:180, duration:3.966 }
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];
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// Converts a path/filename to a file:// URI which we can load from disk.
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// Optionally checks whether the file actually exists on disk at the location
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// we've specified.
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@ -0,0 +1,72 @@
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<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=792935
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-->
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<head>
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<title>Test for Bug 792935 - DASH Stream Switching</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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<script type="application/javascript" src="manifest.js"></script>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=792935">Mozilla Bug 792935</a>
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</div>
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<pre id="test">
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<script type="text/javascript">
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var manager = new MediaTestManager;
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function createTestArray() {
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var tests = [];
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var tmpVid = document.createElement("video");
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for (var testNum=0; testNum<gStreamSwitchTests.length; testNum++) {
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var test = gStreamSwitchTests[testNum];
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if (!tmpVid.canPlayType(test.type)) {
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continue;
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}
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tests.push(test);
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}
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return tests;
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}
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function ended(evt) {
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var v = evt.target;
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if (v.parentNode) {
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v.parentNode.removeChild(v);
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}
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ok(true, "Fully played DASH video implies correct byte ranges downloaded.");
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dump("STREAM-SWITCH-TEST: Finished " + v._name + "\n");
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manager.finished(v.token);
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}
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function error(evt) {
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var v = evt.target;
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ok(false, "Error suggests wrong byte range requested for " + v._name);
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}
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function startTest(test, token) {
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var v = document.createElement('video');
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manager.started(token);
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v.type = test.type;
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v.src = test.name;
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v._name = test.name + " stream switch test";
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v.token = token;
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v.autoplay = true;
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v.addEventListener("error", error, false);
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v.addEventListener("ended", ended, false);
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dump("STREAM-SWITCH-TEST: Started " + name + "\n");
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document.body.appendChild(v);
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}
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manager.runTests(createTestArray(), startTest);
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</script>
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</pre>
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</body>
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</html>
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