Best JavaScript code snippet using wpt
mediasource-changetype-util.js
Source: mediasource-changetype-util.js
...95 // don't take any extra care to avoid gaps that may occur when96 // splice-overlapping such GOP sequences that aren't SAP-Type-1.97 // TODO(wolenetz): https://github.com/w3c/media-source/issues/160 could98 // greatly simplify this problem by allowing us play through these small gaps.99 function findSafeOffset(targetTime, overlappedMediaMetadata, overlappedStartTime, overlappingMediaMetadata) {100 assert_greater_than_equal(targetTime, overlappedStartTime);101 let offset = targetTime;102 if ("start_time" in overlappingMediaMetadata) {103 offset -= overlappingMediaMetadata["start_time"];104 }105 // If the media being overlapped is not out-of-order decode, then we can106 // safely use the supplied times.107 if (!("keyframe_interval" in overlappedMediaMetadata)) {108 return { "offset": offset, "adjustedTime": targetTime };109 }110 // Otherwise, we're overlapping media that needs care to prevent introducing111 // a gap. Adjust offset and adjustedTime to make the overlapping media start112 // at the next overlapped media keyframe at or after targetTime.113 let gopsToRetain = Math.ceil((targetTime - overlappedStartTime) / overlappedMediaMetadata["keyframe_interval"]);114 let adjustedTime = overlappedStartTime + gopsToRetain * overlappedMediaMetadata["keyframe_interval"];115 assert_greater_than_equal(adjustedTime, targetTime);116 offset += adjustedTime - targetTime;117 return { "offset": offset, "adjustedTime": adjustedTime };118 }119 let sourceBuffer = mediaSource.addSourceBuffer(metadataA.type);120 appendBuffer(test, sourceBuffer, dataA);121 let lastStart = metadataA["start_time"];122 if (lastStart == null) {123 lastStart = 0.0;124 }125 // changeType A->B and append the first media of B effectively at 0.5 seconds126 // (or at the first keyframe in A at or after 0.5 seconds if it has127 // keyframe_interval defined).128 test.waitForExpectedEvents(() => {129 let safeOffset = findSafeOffset(0.5, metadataA, lastStart, metadataB);130 lastStart = safeOffset["adjustedTime"];131 sourceBuffer.changeType(metadataB.type);132 sourceBuffer.timestampOffset = safeOffset["offset"];133 appendBuffer(test, sourceBuffer, dataB);134 });135 // changeType B->B and append B starting at 1.0 seconds (or at the first136 // keyframe in B at or after 1.0 seconds if it has keyframe_interval defined).137 test.waitForExpectedEvents(() => {138 assert_less_than(lastStart, 1.0);139 let safeOffset = findSafeOffset(1.0, metadataB, lastStart, metadataB);140 lastStart = safeOffset["adjustedTime"];141 sourceBuffer.changeType(metadataB.type);142 sourceBuffer.timestampOffset = safeOffset["offset"];143 appendBuffer(test, sourceBuffer, dataB);144 });145 // changeType B->A and append A starting at 1.5 seconds (or at the first146 // keyframe in B at or after 1.5 seconds if it has keyframe_interval defined).147 test.waitForExpectedEvents(() => {148 assert_less_than(lastStart, 1.5);149 let safeOffset = findSafeOffset(1.5, metadataB, lastStart, metadataA);150 // Retain the previous lastStart because the next block will append data151 // which begins between that start time and this block's start time.152 sourceBuffer.changeType(metadataA.type);153 sourceBuffer.timestampOffset = safeOffset["offset"];154 appendBuffer(test, sourceBuffer, dataA);155 });156 // changeType A->A and append A starting at 1.3 seconds (or at the first157 // keyframe in B at or after 1.3 seconds if it has keyframe_interval defined).158 test.waitForExpectedEvents(() => {159 assert_less_than(lastStart, 1.3);160 // Our next append will begin by overlapping some of metadataB, then some of161 // metadataA.162 let safeOffset = findSafeOffset(1.3, metadataB, lastStart, metadataA);163 sourceBuffer.changeType(metadataA.type);164 sourceBuffer.timestampOffset = safeOffset["offset"];165 appendBuffer(test, sourceBuffer, dataA);166 });167 // Trim duration to 2 seconds, then play through to end.168 test.waitForExpectedEvents(() => {169 trimBuffered(test, mediaElement, sourceBuffer, 2.1, 2);170 });171 test.waitForExpectedEvents(() => {172 trimDuration(test, mediaElement, mediaSource, 2);173 });174 test.waitForExpectedEvents(() => {175 assert_equals(mediaElement.currentTime, 0);176 test.expectEvent(mediaSource, "sourceended");...
Using AI Code Generation
1var wptools = require('wptools');2var page = wptools.page('Barack Obama');3page.findSafeOffset(function(err, offset) {4 if (err) {5 console.log(err);6 } else {7 console.log(offset);8 }9});10### wptools.page(title, options)11### page.get(options, callback)12### page.findSafeOffset(callback)
Using AI Code Generation
1var wptools = require('wptools');2var wiki = new wptools('Albert Einstein');3wiki.findSafeOffset(function(err, offset) {4 if (!err) {5 console.log(offset);6 }7});
Using AI Code Generation
1var wpt = require('./index.js');2var url = process.argv[2];3wpt.findSafeOffset(url, function(err, offset){4 if(err){5 console.log(err);6 }else{7 console.log('offset: ' + offset);8 }9});
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