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Make web-workers work independently

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This commit is contained in:
Christoph Oberhofer
2016-05-09 08:50:15 +02:00
committed by Christoph Oberhofer
parent 633eabe86c
commit 12a39e28e5
4 changed files with 39 additions and 16 deletions
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src/input/frame_grabber.js
+16
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@@ -4,6 +4,21 @@ import {
computeGray
} from '../common/cv_utils';
function adjustCanvasSize(canvas, targetSize) {
if (canvas.width !== targetSize.x) {
if (ENV.development) {
console.log("WARNING: canvas-size needs to be adjusted");
}
canvas.width = targetSize.x;
}
if (canvas.height !== targetSize.y) {
if (ENV.development) {
console.log("WARNING: canvas-size needs to be adjusted");
}
canvas.height = targetSize.y;
}
}
var FrameGrabber = {};
FrameGrabber.create = function(inputStream, canvas) {
@@ -56,6 +71,7 @@ FrameGrabber.create = function(inputStream, canvas) {
frame = inputStream.getFrame(),
ctxData;
if (frame) {
adjustCanvasSize(_canvas, _canvasSize);
_ctx.drawImage(frame, 0, 0, _canvasSize.x, _canvasSize.y);
ctxData = _ctx.getImageData(_sx, _sy, _size.x, _size.y).data;
if (doHalfSample){