/**
* @license
* Copyright 2016 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
const Gather = require('./gather');
const DevtoolsTimelineModel = require('../lib/traces/devtools-timeline-model');
class ScreenshotFilmstrip extends Gather {
get name() {
return 'screenshots';
}
fetchScreenshot(frame) {
return frame
.imageDataPromise()
.then(data => 'data:image/jpg;base64,' + data);
}
/**
* @param {!Array<!Object>} traceData
* @return {!Promise}
*/
getScreenshots(traceData) {
const model = new DevtoolsTimelineModel(traceData);
const filmStripFrames = model.filmStripModel().frames();
const frameFetches = filmStripFrames.map(frame => this.fetchScreenshot(frame));
return Promise.all(frameFetches).then(images => {
return filmStripFrames.map((frame, i) => ({
timestamp: frame.timestamp,
datauri: images[i]
}));
});
}
postProfiling(options, tracingData) {
return this.getScreenshots(tracingData.traceContents).then(screenshots => {
this.artifact = screenshots;
});
}
}
module.exports = ScreenshotFilmstrip;
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