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| (Empty) | |
| 1 <video autoplay controls></video> |
| 2 <script src=media-file.js></script> |
| 3 <script src=video-test.js></script> |
| 4 <body> |
| 5 <pre> |
| 6 Check if the autoplay gesture override experiment works. There are a lot |
| 7 of config options, so this test just runs all of them. |
| 8 |
| 9 The "results" table contains one row per config tested. |
| 10 == Test Inputs == |
| 11 # - config number, in case you'd like to run just one. |
| 12 Exp - autoplay experiment setting being tested. |
| 13 A-play - how is autoplay requested? |
| 14 none - autoplay is not requested. |
| 15 attr - autoplay attribute is set on the element. |
| 16 js - play() called after media is ready to play. |
| 17 Mute - how is media muted? |
| 18 none - media is not muted. |
| 19 attr - muted attribute is set on the element. |
| 20 js - muted property is set after media is ready to play. |
| 21 Vis - is media visible? |
| 22 onscreen - element starts out onscreen. |
| 23 scroll - element starts offscreen, scrolled into view once |
| 24 it is ready to play. |
| 25 offscreen - element starts out offscreen and stays offscreen. |
| 26 |
| 27 == Test Outputs == |
| 28 Early? - did playback start before element was scrolled onscreen? For |
| 29 tests in which Vis!=scroll, this is reported as "-". |
| 30 Played? - did playback start by the conclusion of the test? |
| 31 Muted? - was the media muted? If the media didn't play, then this is |
| 32 reported as "-". |
| 33 |
| 34 </pre> |
| 35 <table id="results"> |
| 36 <tr> |
| 37 <td>#</td> |
| 38 <td>Exp</td> |
| 39 <td>A-play</td> |
| 40 <td>Mute</td> |
| 41 <td>Vis</td> |
| 42 <td>Early?</td> |
| 43 <td>Played?</td> |
| 44 <td>Muted?</td> |
| 45 </tr> |
| 46 </table> |
| 47 </body> |
| 48 |
| 49 <script> |
| 50 |
| 51 // Starting configuration number. This should be zero normally. |
| 52 var configNumber = 0; |
| 53 |
| 54 var mediaFile = findMediaFile("video", "content/test"); |
| 55 var onscreenParent = document.createElement("div"); |
| 56 // The onscreen parent's height is also used to make sure that the off-screen |
| 57 // parent is, in fact, off-screen. |
| 58 onscreenParent.style.height="1000px"; |
| 59 document.body.insertBefore(onscreenParent, document.body.firstChild); |
| 60 // Also create another root that's off the bottom of the window. |
| 61 var offscreenParent = document.createElement("div"); |
| 62 document.body.appendChild(offscreenParent); |
| 63 |
| 64 function didPlaybackStart(video) |
| 65 { |
| 66 // We say that the video started if it's not paused or if it played and |
| 67 // already ended. |
| 68 return !video.paused || video.ended; |
| 69 } |
| 70 |
| 71 function addResultsRow(spec) |
| 72 { |
| 73 // Add a row to the results table. |
| 74 var row = document.getElementById("results").insertRow(-1); |
| 75 var td = row.insertCell(0); |
| 76 |
| 77 var fields = [ "experimentNumber", "experimentType", "autoplayType", "mutedT
ype", "visType", |
| 78 "playedEarly", "played", "muted"]; |
| 79 for(idx in fields) |
| 80 row.insertCell(-1).innerText = (""+spec[fields[idx]]).substring(0,7); |
| 81 } |
| 82 |
| 83 function checkVideoStatus(video, spec) |
| 84 { |
| 85 // Now that we can play, if we're supposed to play / mute via js do so. |
| 86 if (spec.mutedType == "js") |
| 87 video.muted = true; |
| 88 if(spec.autoplayType == "js") |
| 89 video.play(); |
| 90 |
| 91 // Update the spec with the results. |
| 92 var didStart = didPlaybackStart(video); |
| 93 video.spec.played = didStart ? "played" : "no"; |
| 94 video.spec.muted = didStart ? (video.muted ? "muted" : "unmuted") : "-"; |
| 95 |
| 96 addResultsRow(video.spec); |
| 97 video.parentElement.removeChild(video); |
| 98 |
| 99 // Scroll back to the top, in case this was a scrolling test. |
| 100 onscreenParent.scrollIntoView(); |
| 101 |
| 102 // Start the next config, but let the event queue drain. |
| 103 setTimeout(runNextConfig, 0); |
| 104 } |
| 105 |
| 106 function runOneConfig(spec) |
| 107 { |
| 108 internals.settings.setAutoplayExperimentMode(spec.experimentType); |
| 109 |
| 110 // Create, configure, and attach a media element. |
| 111 var video = document.createElement("video"); |
| 112 |
| 113 // Pick whether the element will be visible when canPlayThrough. |
| 114 if (spec.visType == "onscreen") |
| 115 onscreenParent.appendChild(video); |
| 116 else |
| 117 offscreenParent.appendChild(video); |
| 118 |
| 119 // Set any attributes before canPlayThrough. |
| 120 if (spec.mutedType == "attr") |
| 121 video.setAttribute("muted", "true"); |
| 122 if (spec.autoplayType == "attr") |
| 123 video.setAttribute("autoplay", "true"); |
| 124 |
| 125 spec.playedEarly = "-"; |
| 126 |
| 127 // Record the spec in the video element, so that we can display the |
| 128 // results later. |
| 129 video.spec = spec; |
| 130 |
| 131 // Wait for canplaythrough before continuing, so that the media |
| 132 // might actually be playing. |
| 133 video.addEventListener("canplaythrough", function() |
| 134 { |
| 135 // If we're supposed to scroll the item onscreen after it is ready to |
| 136 // play, then do so now. |
| 137 if(spec.visType == "scroll") { |
| 138 // Record the play state here, too, before we scroll. |
| 139 spec.playedEarly = didPlaybackStart(video) ? "yes" : "no"; |
| 140 |
| 141 // We are supposed to scroll the player into view. Doing so |
| 142 // earlier would work, but might not test the scroll listener. |
| 143 video.scrollIntoView(true); |
| 144 // Wait for HTMLMediaElement to get the scroll event before |
| 145 // recording the results. |
| 146 setTimeout(function() { checkVideoStatus(video, spec); }, 0); |
| 147 } else { |
| 148 // Record the results immediately. |
| 149 checkVideoStatus(video, spec); |
| 150 } |
| 151 }); |
| 152 |
| 153 // Set the source, which will eventually lead to canPlayThrough. |
| 154 video.src=mediaFile; |
| 155 } |
| 156 |
| 157 var experimentTypes = ["none", "always", "if-muted", "play-muted"]; |
| 158 var autoplayTypes = ["none", "attr", "js"]; |
| 159 var mutedTypes = ["none", "attr", "js"]; |
| 160 var visTypes = ["onscreen", "scroll", "offscreen"]; |
| 161 |
| 162 function runNextConfig() |
| 163 { |
| 164 // Convert configNumber into a spec, and run it. |
| 165 var exp = configNumber; |
| 166 |
| 167 // Convert this experiment number into settings. |
| 168 var spec = {}; |
| 169 spec.experimentType = experimentTypes[exp % experimentTypes.length]; |
| 170 exp = Math.floor(exp / experimentTypes.length); |
| 171 spec.autoplayType = autoplayTypes[exp % autoplayTypes.length]; |
| 172 exp = Math.floor(exp / autoplayTypes.length); |
| 173 spec.mutedType = mutedTypes[exp % mutedTypes.length]; |
| 174 exp = Math.floor(exp / mutedTypes.length); |
| 175 spec.visType = visTypes[exp % visTypes.length]; |
| 176 exp = Math.floor(exp / visTypes.length); |
| 177 spec.experimentNumber = configNumber; |
| 178 |
| 179 // exp>0 here indicates that we've wrapped around. |
| 180 if (exp > 0) { |
| 181 endTest(); |
| 182 } |
| 183 |
| 184 configNumber++; |
| 185 runOneConfig(spec); |
| 186 } |
| 187 |
| 188 window.internals.settings.setMediaPlaybackRequiresUserGesture(true); |
| 189 window.internals.settings.setOverrideOptimizedForMobileCheck(true); |
| 190 runNextConfig(); |
| 191 |
| 192 </script> |
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Chromium Code Reviews
Issue 1179223002:
Implement autoplay gesture override experiment. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master