video.js
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import ARCS from '../build/arcs.js';
var LiveSource, VideoSource;
LiveSource = ARCS.Component.create(
function () {
var context, canvas, video, imageData;
var defaultWidth = 320;
var defaultHeight = 240;
var self = this;
var handleMediaStream = function(stream) {
console.log(video,stream);
if (window.webkitURL) {
video.src = window.webkitURL.createObjectURL(stream);
} else if (video.mozSrcObject !== undefined) {
video.mozSrcObject = stream;
} else if (video.srcObject !== undefined) {
video.srcObject = stream;
} else {
video.src = stream;
}
/*video.videoWidth=defaultWidth;
video.videoHeight=defaultHeight;*/
self.emit("onReady");
};
var errorMediaStream = function(error) {
console.error("Cannot initialize video component:", error.code);
};
var setUserMedia = function() {
if (navigator.mediaDevices !== undefined) {
navigator.mediaDevices.getUserMedia({video: {facingMode: "environment", width: defaultWidth, height: defaultHeight}})
.then(handleMediaStream)
.catch(errorMediaStream);
} else {
var getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
if (getUserMedia !== undefined) {
getUserMedia({video:true}).then(handleMediaStream);
}
}
};
this.grabFrame = function () {
if ( context === undefined || canvas === undefined || video === undefined)
return;
if (video.readyState === video.HAVE_ENOUGH_DATA) {
context.drawImage(video, 0, 0, canvas.width, canvas.height);
imageData = context.getImageData(0, 0, canvas.width, canvas.height);
this.emit("onImage",imageData);
}
};
this.setSize = function(x,y) {
};
this.setWidgets = function (videoId, canvasId) {
video = document.getElementById(videoId);
canvas = document.getElementById(canvasId);
if (video === undefined || canvas === undefined) {
console.log("video elements not defined");
return;
}
context = canvas.getContext("2d");
var canvasStyle= window.getComputedStyle(canvas);
canvas.width=parseInt(canvasStyle.width);
canvas.height=parseInt(canvasStyle.height);
setUserMedia();
};
},
['grabFrame','setWidgets'],
['onReady','onImage']
);
VideoSource = ARCS.Component.create(
function() {
var context, canvas, video, imageData;
var defaultWidth=320;
var defaultHeight=240;
var self=this;
this.setWidgets = function (videoId, canvasId) {
video = document.getElementById(videoId);
canvas = document.getElementById(canvasId);
if (video === undefined || canvas === undefined) {
return;
}
context = canvas.getContext("2d");
var canvasStyle= window.getComputedStyle(canvas);
canvas.width=parseInt(canvasStyle.width);
canvas.height=parseInt(canvasStyle.height);
if (video.paused || video.ended) {
video.addEventListener('play', function() {
self.emit("onReady");
});
} else {
self.emit("onReady");
}
};
this.grabFrame = function () {
if ( context === undefined || canvas === undefined || video === undefined)
return;
if (video.paused || video.ended) {
return;
}
context.drawImage(video, 0, 0, canvas.width, canvas.height);
imageData = context.getImageData(0, 0, canvas.width, canvas.height);
this.emit("onImage",imageData);
};
},
['grabFrame', 'setWidgets'],
['onReady', 'onImage']
);
export default {LiveSource: LiveSource, VideoSource: VideoSource};