88 lines
3.5 KiB
HTML
88 lines
3.5 KiB
HTML
<html>
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<head>
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<title>Create patterns on canvas using video</title>
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<script src="media-file.js"></script>
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<script src="video-test.js"></script>
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<script src="../resources/platform-helper.js"></script>
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<script>
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var video;
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var numberOfSeeks = 4;
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var expectedResults = [
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// Each entry is formatted as [x, y, r, g, b].
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[40, 165, 194, 193, 14], // Represents yellow north west tile.
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[355, 165, 194, 193, 14], // Represents yellow north east tile.
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[40, 403, 194, 193, 14], // Represents yellow south west tile.
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[355, 403, 194, 193, 14], // Represents yellow south east tile.
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[56, 165, 17, 197, 195], // Represents blue/cyan north west tile.
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[371, 165, 17, 197, 195], // Represents blue/cyan north east tile.
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[56, 403, 17, 197, 195], // Represents blue/cyan south west tile.
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[371, 403, 17, 197, 195], // Represents blue/cyan south east tile.
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[73, 165, 20, 200, 18], // Represents green north west tile.
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[388, 165, 20, 200, 18], // Represents green north east tile.
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[73, 403, 20, 200, 18], // Represents green south west tile.
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[388, 403, 20, 200, 18], // Represents green south east tile.
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]
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if (window.testRunner) {
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testRunner.dumpAsText(true);
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testRunner.waitUntilDone();
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}
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function checkColorAtLocation(ctx, x, y, r, g, b, tolerance)
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{
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var buffer = ctx.getImageData(x, y, 1, 1).data;
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if (Math.abs(buffer[0] - r) < tolerance
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&& Math.abs(buffer[1] - g) < tolerance
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&& Math.abs(buffer[2] - b) < tolerance)
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logResult(true, `Saw close enough to (${r}, ${g}, ${b}) at (${x}, ${y})`);
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else
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logResult(false, `Expected (${r}, ${g}, ${b}) at (${x}, ${y}) but saw (${buffer[0]}, ${buffer[1]}, ${buffer[2]})`);
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}
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function drawAndInsertFrame()
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{
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var canvas = document.createElement('canvas');
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canvas.width = 2 * video.videoWidth;
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canvas.height = 2 * video.videoHeight;
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = ctx.createPattern(video, 'repeat');
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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document.getElementById('canvases').appendChild(canvas);
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expectedResults.forEach(function(element) {
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checkColorAtLocation(ctx, element[0], element[1], element[2], element[3], element[4], videoCanvasPixelComparisonTolerance());
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});
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// Ensure that the test seeks a couple of times.
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if (--numberOfSeeks) {
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video.currentTime += 0.24;
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return;
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}
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endTest();
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}
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function canplaythrough()
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{
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video.currentTime = 1;
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}
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function start()
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{
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findMediaElement();
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waitForEvent('canplaythrough', canplaythrough);
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waitForEvent('seeked', drawAndInsertFrame);
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video.src = findMediaFile('video', 'content/test');
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}
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</script>
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</head>
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<body onload="start()">
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<video id="video"></video>
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<div id="canvases"></div>
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</body>
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</html>
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