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Runtime error
Runtime error
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/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* 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.
*/
import {registerSerializableConstructors} from '@/common/error/ErrorSerializationUtils';
import {Tracker} from '@/common/tracker/Tracker';
import {TrackerRequestMessageEvent} from '@/common/tracker/TrackerTypes';
import {TRACKER_MAPPING} from '@/common/tracker/Trackers';
import {serializeError} from 'serialize-error';
import VideoWorkerContext from './VideoWorkerContext';
import {
ErrorResponse,
VideoWorkerRequestMessageEvent,
} from './VideoWorkerTypes';
registerSerializableConstructors();
const context = new VideoWorkerContext();
let tracker: Tracker | null = null;
let statsEnabled = false;
self.addEventListener(
'message',
async (
event: VideoWorkerRequestMessageEvent | TrackerRequestMessageEvent,
) => {
try {
switch (event.data.action) {
// Initialize context
case 'setCanvas':
context.setCanvas(event.data.canvas);
break;
case 'setSource':
context.setSource(event.data.source);
break;
// Playback
case 'play':
context.play();
break;
case 'pause':
context.pause();
break;
case 'stop':
context.stop();
break;
case 'frameUpdate':
context.goToFrame(event.data.index);
break;
// Filmstrip
case 'filmstrip': {
const {width, height} = event.data;
await context.createFilmstrip(width, height);
break;
}
// Effects
case 'setEffect': {
const {name, index, options} = event.data;
await context.setEffect(name, index, options);
break;
}
// Encode
case 'encode': {
await context.encode();
break;
}
case 'enableStats': {
statsEnabled = true;
context.enableStats();
tracker?.enableStats();
break;
}
// Tracker
case 'initializeTracker': {
const {name, options} = event.data;
const Tracker = TRACKER_MAPPING[name];
// Update the endpoint for the streaming API
tracker = new Tracker(context, options);
if (statsEnabled) {
tracker.enableStats();
}
break;
}
case 'startSession': {
const {videoUrl} = event.data;
await tracker?.startSession(videoUrl);
break;
}
case 'createTracklet':
tracker?.createTracklet();
break;
case 'deleteTracklet':
await tracker?.deleteTracklet(event.data.trackletId);
break;
case 'closeSession':
tracker?.closeSession();
break;
case 'updatePoints': {
const {frameIndex, objectId, points} = event.data;
context.allowEffectAnimation(true, objectId, points);
await tracker?.updatePoints(frameIndex, objectId, points);
break;
}
case 'clearPointsInFrame': {
const {frameIndex, objectId} = event.data;
await tracker?.clearPointsInFrame(frameIndex, objectId);
break;
}
case 'clearPointsInVideo':
await tracker?.clearPointsInVideo();
break;
case 'streamMasks': {
const {frameIndex} = event.data;
context.allowEffectAnimation(false);
await tracker?.streamMasks(frameIndex);
break;
}
case 'abortStreamMasks':
tracker?.abortStreamMasks();
break;
}
} catch (error) {
const serializedError = serializeError(error);
const errorResponse: ErrorResponse = {
action: 'error',
error: serializedError,
};
self.postMessage(errorResponse);
}
},
);
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