Chromium Code Reviews Chromium Code Reviews
Issue 1179223002:
Implement autoplay gesture override experiment. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master| OLD | NEW |
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| (Empty) | |
| 1 <html> | |
| 2 <video autoplay controls></video> | |
| 3 <script src=media-file.js></script> | |
| 4 <script src=video-test.js></script> | |
| 5 <body> | |
| 6 <pre> | |
| 7 Check if the autoplay gesture override experiment works. There are a lot | |
| 8 of config options, so this test just runs all of them. | |
| 9 | |
| 10 The "results" table contains one row per config tested. | |
| 11 == Test Inputs == | |
| 12 # - config number, in case you'd like to run just one. | |
| 13 Flags - autoplay experiment setting being tested. | |
| 14 a - "foraudio" | |
| 15 v - "forvideo" | |
| 16 M - "ifmuted" | |
| 17 p - "playmuted" | |
| 18 m - "ifmobile" | |
| 19 For example, EM means "enabled-ifmuted". | |
| 20 Type - audio or video element? | |
| 21 audio - <audio> | |
| 22 video - <video> | |
| 23 Play w/- how is play requested? | |
| 24 none - play is not requested. | |
| 25 attr - autoplay attribute is set on the element. | |
| 26 play() - play() called after media is ready to play. | |
| 27 Mute - how is media muted? | |
| 28 no - media is not muted. | |
| 29 yes - muted attribute is set on the element. | |
| 30 Mobile - is page optimized for mobile? | |
| 31 no - page is not optimized for mobile. | |
| 32 yes - page is optimized for mobile. | |
| 33 | |
| 34 == Test Outputs == | |
| 35 Played? - did playback start by the conclusion of the test? | |
| 36 Muted? - was the media muted? If the media didn't play, then this is | |
| 37 reported as "-". | |
| 38 | |
| 39 </pre> | |
| 40 <table id="results"> | |
| 41 <tr> | |
| 42 <td>#</td> | |
| 43 <td>Flags</td> | |
| 44 <td>Type</td> | |
| 45 <td>Play w/</td> | |
| 46 <td>Mute</td> | |
| 47 <td>Mobile</td> | |
| 48 <td>Played?</td> | |
| 49 <td>Muted?</td> | |
| 50 </tr> | |
| 51 </table> | |
| 52 </body> | |
| 53 | |
| 54 <script> | |
| 55 | |
| 56 // Starting configuration number. This should be zero normally. | |
| 57 var configNumber = 0; | |
| 58 | |
| 59 var mediaFile = findMediaFile("video", "content/test"); | |
| 60 var onscreenParent = document.createElement("div"); | |
| 61 document.body.insertBefore(onscreenParent, document.body.firstChild); | |
| 62 // When we remove the meta tag from the document, we put it here. | |
| 63 var isOptimizedForMobile = false; | |
| 64 | |
| 65 function didPlaybackStart(video) | |
| 66 { | |
| 67 // We say that the video started if it's not paused or if it played and | |
| 68 // already ended. | |
| 69 return !video.paused || video.ended; | |
| 70 } | |
| 71 | |
| 72 function becomeOptimizedForMobile(enable) | |
| 73 { | |
| 74 // If we're in the right state already, then return; | |
| 75 if (enable == isOptimizedForMobile) | |
| 76 return; | |
| 77 | |
| 78 if (!enable) { | |
| 79 // We can't transition out of optimized for mobile. | |
| 80 console.log("becomeOptimizedForMobile: test is broken -- cannot un-enabl e mobile"); | |
| 81 endTest(); | |
| 82 } else { | |
| 83 // This only works once. | |
| 84 mobileMetaTag = document.createElement('meta'); | |
| 85 mobileMetaTag.name="viewport"; | |
|
philipj_slow
2015/09/10 09:58:59
More missing whitespace :)
liberato (no reviews please)
2015/09/10 14:52:28
Done.
| |
| 86 mobileMetaTag.content="width=device-width"; | |
| 87 document.head.appendChild(mobileMetaTag); | |
| 88 isOptimizedForMobile = true; | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 function addResultsRow(spec) | |
| 93 { | |
| 94 // Add a row to the results table. | |
| 95 var row = document.getElementById("results").insertRow(); | |
| 96 var td = row.insertCell(); | |
| 97 | |
| 98 // Add experiment number | |
| 99 row.insertCell().innerText = (""+spec.experimentNumber); | |
| 100 | |
| 101 // Process experiment type specially. | |
| 102 var type = spec.experimentType; | |
| 103 var smallType = ""; | |
| 104 smallType += (type.indexOf("-forvideo")>-1)?"v":""; | |
| 105 smallType += (type.indexOf("-foraudio")>-1)?"a":""; | |
| 106 smallType += (type.indexOf("-ifmuted")>-1)?"M":""; | |
| 107 smallType += (type.indexOf("-playmuted")>-1)?"p":""; | |
| 108 smallType += (type.indexOf("-ifmobile")>-1)?"m":""; | |
| 109 row.insertCell().innerText = smallType; | |
| 110 | |
| 111 // Add remaining fields. | |
| 112 var fields = [ "elementType", "autoplayType", "mutedType", "mobileType", | |
| 113 "played", "muted"]; | |
| 114 for(idx in fields) | |
| 115 row.insertCell().innerText = spec[fields[idx]].substring(0,7); | |
| 116 } | |
| 117 | |
| 118 function configureElementViaScript(element, spec) | |
| 119 { | |
| 120 if(spec.autoplayType == "play()") | |
| 121 element.play(); | |
| 122 } | |
| 123 | |
| 124 function queueNextExperiment() | |
| 125 { | |
| 126 // Start the next config, but let the event queue drain. | |
| 127 setTimeout(runNextConfig, 0); | |
| 128 } | |
| 129 | |
| 130 function checkElementStatus(element) | |
| 131 { | |
| 132 // Update the spec with the results. | |
| 133 var didStart = didPlaybackStart(element); | |
| 134 element.spec.played = didStart ? "played" : "no"; | |
| 135 element.spec.muted = didStart ? (element.muted ? "muted" : "unmuted") : "-"; | |
| 136 | |
| 137 addResultsRow(element.spec); | |
| 138 element.remove(); | |
| 139 | |
| 140 queueNextExperiment(); | |
| 141 } | |
| 142 | |
| 143 function runOneConfig(spec) | |
| 144 { | |
| 145 internals.settings.setAutoplayExperimentMode(spec.experimentType); | |
| 146 | |
| 147 // Create, configure, and attach a media element. | |
| 148 var element = document.createElement(spec.elementType); | |
| 149 element.controls = true; | |
| 150 | |
| 151 onscreenParent.appendChild(element); | |
| 152 | |
| 153 // Set any attributes before canPlayThrough. | |
| 154 if (spec.mutedType == "yes") | |
| 155 element.muted = true; | |
| 156 if (spec.autoplayType == "attr") | |
| 157 element.autoplay = true; | |
| 158 becomeOptimizedForMobile(spec.mobileType == "yes"); | |
| 159 | |
| 160 // Record the spec in the element, so that we can display the | |
| 161 // results later. | |
| 162 element.spec = spec; | |
| 163 | |
| 164 // Wait for canplaythrough before continuing, so that the media | |
| 165 // might actually be playing. | |
| 166 element.addEventListener("canplaythrough", function() | |
| 167 { | |
| 168 // Now that we can play, if we're supposed to play / mute via js do so. | |
| 169 configureElementViaScript(element, spec); | |
| 170 | |
| 171 // Record the results. | |
| 172 checkElementStatus(element); | |
| 173 }); | |
| 174 | |
| 175 // Set the source, which will eventually lead to canPlayThrough. | |
| 176 element.src = mediaFile; | |
| 177 } | |
| 178 | |
| 179 var experimentTypes = [ | |
| 180 "none", | |
| 181 "enabled-forvideo", | |
| 182 "enabled-forvideo-ifmuted", | |
| 183 "enabled-forvideo-playmuted", | |
| 184 "enabled-foraudio", | |
| 185 "enabled-forvideo-ifmobile", | |
| 186 ]; | |
| 187 var elementTypes = ["video", "audio"]; | |
| 188 var autoplayTypes = ["none", "attr", "play()"]; | |
| 189 var mutedTypes = ["no", "yes"]; | |
| 190 // mobileTypes must always start with no, since we cannot un-optimize the page. | |
| 191 var mobileTypes = ["no", "yes"]; | |
| 192 | |
| 193 function runNextConfig() | |
| 194 { | |
| 195 // Convert configNumber into a spec, and run it. | |
| 196 var exp = configNumber; | |
| 197 | |
| 198 // Convert this experiment number into settings. | |
| 199 var spec = {}; | |
| 200 spec.elementType = elementTypes[exp % elementTypes.length]; | |
| 201 exp = Math.floor(exp / elementTypes.length); | |
| 202 spec.experimentType = experimentTypes[exp % experimentTypes.length]; | |
| 203 exp = Math.floor(exp / experimentTypes.length); | |
| 204 spec.autoplayType = autoplayTypes[exp % autoplayTypes.length]; | |
| 205 exp = Math.floor(exp / autoplayTypes.length); | |
| 206 spec.mutedType = mutedTypes[exp % mutedTypes.length]; | |
| 207 exp = Math.floor(exp / mutedTypes.length); | |
| 208 // Mobile must always change last, so that all the "no" cases precede | |
| 209 // all the "yes" cases, since we can't switch the doc back to "not | |
| 210 // optimized for mobile". | |
| 211 spec.mobileType = mobileTypes[exp % mobileTypes.length]; | |
| 212 exp = Math.floor(exp / mobileTypes.length); | |
| 213 spec.experimentNumber = configNumber; | |
| 214 | |
| 215 // Return null if configNumber was larger than the highest experiment. | |
| 216 if (exp > 0) | |
| 217 endTest(); | |
| 218 | |
| 219 configNumber++; | |
| 220 | |
| 221 // To keep the test fast, skip a few combinations. | |
| 222 var skip = false; | |
| 223 if (spec.experimentType.indexOf("-ifmuted") == -1 && spec.mutedType != "no") | |
| 224 skip = true; | |
| 225 | |
| 226 // Only allow basic combinations for the mobile case. We just want to | |
| 227 // test video with autoplay, no mute options when testing -ifmobile. | |
| 228 // Similarly, if we're setting the page to be optimied for mobile, then | |
| 229 // require that we're one of those tests. | |
| 230 if ((spec.mobileType == "yes" || spec.experimentType.indexOf("-ifmobile")>0) | |
| 231 && (spec.elementType != "video" || spec.autoplayType != "attr" | |
| 232 || spec.mutedType != "no" | |
| 233 || (spec.experimentType != "enabled-forvideo" | |
| 234 && spec.experimentType != "enabled-forvideo-ifmobile"))) | |
| 235 skip = true; | |
| 236 | |
| 237 if (skip) | |
| 238 queueNextExperiment(); | |
| 239 else | |
| 240 runOneConfig(spec); | |
| 241 } | |
| 242 | |
| 243 window.internals.settings.setMediaPlaybackRequiresUserGesture(true); | |
| 244 runNextConfig(); | |
| 245 | |
| 246 </script> | |
| 247 </html> | |
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