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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 configureVideoViaScript(video, spec) |
| 84 { |
| 85 if (spec.mutedType == "js") |
| 86 video.muted = true; |
| 87 if(spec.autoplayType == "js") |
| 88 video.play(); |
| 89 } |
| 90 |
| 91 function queueNextExperiment() |
| 92 { |
| 93 // Start the next config, but let the event queue drain. |
| 94 setTimeout(runNextConfig, 0); |
| 95 } |
| 96 |
| 97 function checkVideoStatus(video, spec) |
| 98 { |
| 99 // Update the spec with the results. |
| 100 var didStart = didPlaybackStart(video); |
| 101 video.spec.played = didStart ? "played" : "no"; |
| 102 video.spec.muted = didStart ? (video.muted ? "muted" : "unmuted") : "-"; |
| 103 |
| 104 addResultsRow(video.spec); |
| 105 video.parentElement.removeChild(video); |
| 106 |
| 107 // Scroll back to the top, in case this was a scrolling test. |
| 108 onscreenParent.scrollIntoView(); |
| 109 |
| 110 queueNextExperiment(); |
| 111 } |
| 112 |
| 113 function runOneConfig(spec) |
| 114 { |
| 115 internals.settings.setAutoplayExperimentMode(spec.experimentType); |
| 116 |
| 117 // Create, configure, and attach a media element. |
| 118 var video = document.createElement("video"); |
| 119 |
| 120 // Pick whether the element will be visible when canPlayThrough. |
| 121 if (spec.visType == "onscreen") |
| 122 onscreenParent.appendChild(video); |
| 123 else |
| 124 offscreenParent.appendChild(video); |
| 125 |
| 126 // Set any attributes before canPlayThrough. |
| 127 if (spec.mutedType == "attr") |
| 128 video.setAttribute("muted", "true"); |
| 129 if (spec.autoplayType == "attr") |
| 130 video.setAttribute("autoplay", "true"); |
| 131 |
| 132 spec.playedEarly = "-"; |
| 133 |
| 134 // Record the spec in the video element, so that we can display the |
| 135 // results later. |
| 136 video.spec = spec; |
| 137 |
| 138 // Wait for canplaythrough before continuing, so that the media |
| 139 // might actually be playing. |
| 140 video.addEventListener("canplaythrough", function() |
| 141 { |
| 142 // Now that we can play, if we're supposed to play / mute via js do so. |
| 143 configureVideoViaScript(video, spec); |
| 144 |
| 145 // If we're supposed to scroll the item onscreen after it is ready to |
| 146 // play, then do so now. |
| 147 if(spec.visType == "scroll") { |
| 148 // Record the play state here, too, before we scroll. |
| 149 spec.playedEarly = didPlaybackStart(video) ? "yes" : "no"; |
| 150 |
| 151 // We are supposed to scroll the player into view. |
| 152 video.scrollIntoView(true); |
| 153 // We cause two visibility checks. The first notices the scroll, |
| 154 // while the second notices that scrolling has stopped. |
| 155 // It would be nicer to trigger location polling here, but that |
| 156 // can take ~second to notice that scrolling is stopped. |
| 157 window.internals.triggerAutoplayVisibilityCheck(video); |
| 158 window.internals.triggerAutoplayVisibilityCheck(video); |
| 159 // Once those are return, the state should be correct. |
| 160 checkVideoStatus(video, spec); |
| 161 } else { |
| 162 // Record the results immediately. |
| 163 checkVideoStatus(video, spec); |
| 164 } |
| 165 }); |
| 166 |
| 167 // Set the source, which will eventually lead to canPlayThrough. |
| 168 video.src=mediaFile; |
| 169 } |
| 170 |
| 171 var experimentTypes = ["none", "always", "if-muted", "play-muted"]; |
| 172 var autoplayTypes = ["none", "attr", "js"]; |
| 173 var mutedTypes = ["none", "attr", "js"]; |
| 174 var visTypes = ["onscreen", "scroll", "offscreen"]; |
| 175 |
| 176 function runNextConfig() |
| 177 { |
| 178 // Convert configNumber into a spec, and run it. |
| 179 var exp = configNumber; |
| 180 |
| 181 // Convert this experiment number into settings. |
| 182 var spec = {}; |
| 183 spec.experimentType = experimentTypes[exp % experimentTypes.length]; |
| 184 exp = Math.floor(exp / experimentTypes.length); |
| 185 spec.autoplayType = autoplayTypes[exp % autoplayTypes.length]; |
| 186 exp = Math.floor(exp / autoplayTypes.length); |
| 187 spec.mutedType = mutedTypes[exp % mutedTypes.length]; |
| 188 exp = Math.floor(exp / mutedTypes.length); |
| 189 spec.visType = visTypes[exp % visTypes.length]; |
| 190 exp = Math.floor(exp / visTypes.length); |
| 191 spec.experimentNumber = configNumber; |
| 192 |
| 193 // exp>0 here indicates that we've wrapped around. |
| 194 if (exp > 0) { |
| 195 endTest(); |
| 196 } |
| 197 |
| 198 configNumber++; |
| 199 |
| 200 // To keep the test fast, skip a few combinations. |
| 201 var skip = false; |
| 202 if (spec.autoplayType == "none" && spec.visType != 'onscreen') |
| 203 skip = true; |
| 204 else if (spec.experimentType == "if-muted" && spec.visType != "onscreen") |
| 205 skip = true; |
| 206 else if (spec.visType == "offscreen" && spec.autoplayType != "attr") |
| 207 skip = true; |
| 208 else if (spec.experimentType != "if-muted" && spec.mutedType != "none") |
| 209 skip = true; |
| 210 |
| 211 if (skip) |
| 212 queueNextExperiment(); |
| 213 else |
| 214 runOneConfig(spec); |
| 215 } |
| 216 |
| 217 window.internals.settings.setMediaPlaybackRequiresUserGesture(true); |
| 218 window.internals.settings.setOverrideOptimizedForMobileCheck(true); |
| 219 runNextConfig(); |
| 220 |
| 221 </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