LayoutTests/webgl/2.0.0/resources/webgl_test_files/conformance/more/demos/video.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <!--

 /*
 ** Copyright (c) 2012 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
 ** "Materials"), to deal in the Materials without restriction, including
 ** without limitation the rights to use, copy, modify, merge, publish,
 ** distribute, sublicense, and/or sell copies of the Materials, and to
 ** permit persons to whom the Materials are furnished to do so, subject to
 ** the following conditions:
 **
 ** The above copyright notice and this permission notice shall be included
 ** in all copies or substantial portions of the Materials.
 **
 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

 -->
 <script type="application/javascript" src="../util.js"></script>
 <script>
 "use strict";
 var processor = {
   lastTime : new Date,
   timerCallback: function() {
     if (this.video.paused || this.video.ended) {
       return;
     }
     this.computeFrame();
     var t = new Date;
     var elapsed = t - this.lastTime;
     this.lastTime = t;
     var self = this;
     setTimeout(function () {
         self.timerCallback();
       }, Math.max(0, 33-elapsed));
   },

   init: function() {
     if (this.initDone) return;
     this.c2 = document.getElementById("c2");
     this.ctx2 = getGLContext(this.c2);
     this.greenScreen = new Filter(this.ctx2, 'identity-flip-vert', 'greenScreen');
     this.ctx2.activeTexture(this.ctx2.TEXTURE0);
     this.tex = loadTexture(this.ctx2, this.c1, false);
     this.ctx2.activeTexture(this.ctx2.TEXTURE1);
     this.tex2 = loadTexture(this.ctx2, document.getElementById('i'), false);
     this.ctx2.activeTexture(this.ctx2.TEXTURE0);
     this.initDone = true;
   },

   doLoad: function() {
     this.video = document.getElementById("video");
     this.c1 = document.getElementById("c1");
     this.ctx1 = this.c1.getContext("2d");
     this.ctx1.globalCompositeOperation = 'copy';
     this.ctx1.fillRect(0,0,this.c1.width, this.c1.height);
     var self = this;
     this.video.addEventListener("play", function() {
         self.init();
         self.width = self.video.videoWidth;
         self.height = self.video.videoHeight;
         self.lastTime = new Date;
         self.timerCallback();
       }, false);
   },

   computeFrame: function() {
 //     this.ctx1.drawImage(this.video, 0, 0, this.width, this.height);
     this.ctx2.texImage2D(this.ctx2.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
     this.greenScreen.apply(function(s) {
         s.uniform1i('Texture', 0);
         s.uniform1i('Texture2', 1);
     });

     return;
   }
 };

 </script>
 <script id="identity-flip-vert" type="x-shader/x-vertex">
     attribute vec3 Vertex;
     attribute vec2 Tex;

     varying vec4 texCoord0;
     void main()
     {
         texCoord0 = vec4(Tex.s,1.0-Tex.t,0.0,0.0);
         gl_Position = vec4(Vertex, 1.0);
     }
 </script>
 <script id="greenScreen" type="x-shader/x-fragment">
     precision mediump float;

     uniform sampler2D Texture;
     uniform sampler2D Texture2;

     varying vec4 texCoord0;
     void main()
     {
         vec4 c = texture2D(Texture, texCoord0.st);
         float r = c.r * 0.5;
         float a = c.g * 6.28;
         float x = cos(a) * r;
         float y = sin(a) * r;
         vec4 c2 = texture2D(Texture2, vec2(0.7+x, 0.5+y));
         // Shaders with branches are not allowed when dealing with non-SOP content
         // so instead of "if (b) c2.a = 0;", we use mix()
         bool b = (c.g > 120.0/255.0 && c.r > 120.0/255.0 && c.b < 50.0/255.0);
         c2.a = mix(c2.a, 0.0, float(b));
         gl_FragColor = c2;
     }
 </script>
     <style>
       body {
         background: black;
         color:#CCCCCC;
       }
       a {
           color: white;
       }
       #c2 {
         background-image: url(http://www.mozbox.org/pub/green/foo.png);
         background-repeat: repeat;
       }
       div {
         float: left;
         border :1px solid #444444;
         padding:10px;
         margin: 10px;
         background:#3B3B3B;
       }
       img { display: none; }
     </style>
  </head>
   <body onload="processor.doLoad()">
     <div>
         This is a port of Paul Rouget's <a href="http://blog.mozbox.org/post/2009/02/25/video-canvas%3A-special-effects">Canvas+Video green screen demo</a>, plus a texture lookup from the Firefox logo based on the values of the green and red color channels.
     </div>
     <div>
       <video id="video" controls="true">
         <source src="http://www.mozbox.org/pub/green/video.ogv"></source>
         <source src="http://cs.helsinki.fi/u/ilmarihe/c3d/demos/video.mp4"></source>
       </video>
       <canvas id="c1" width="320" height="192"></canvas>
     </div>
     <div>
       <canvas id="c2" width="640" height="384"></canvas>
     </div>
     <img id="i" src="http://www.mozbox.org/pub/green/foo.png">
   </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<!--

	/*
	** Copyright (c) 2012 The Khronos Group Inc.
	**
	** Permission is hereby granted, free of charge, to any person obtaining a
	** copy of this software and/or associated documentation files (the
	** "Materials"), to deal in the Materials without restriction, including
	** without limitation the rights to use, copy, modify, merge, publish,
	** distribute, sublicense, and/or sell copies of the Materials, and to
	** permit persons to whom the Materials are furnished to do so, subject to
	** the following conditions:
	**
	** The above copyright notice and this permission notice shall be included
	** in all copies or substantial portions of the Materials.
	**
	** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
	*/

	-->
	<script type="application/javascript" src="../util.js"></script>
	<script>
	"use strict";
	var processor = {
	lastTime : new Date,
	timerCallback: function() {
	if (this.video.paused \|\| this.video.ended) {
	return;
	}
	this.computeFrame();
	var t = new Date;
	var elapsed = t - this.lastTime;
	this.lastTime = t;
	var self = this;
	setTimeout(function () {
	self.timerCallback();
	}, Math.max(0, 33-elapsed));
	},

	init: function() {
	if (this.initDone) return;
	this.c2 = document.getElementById("c2");
	this.ctx2 = getGLContext(this.c2);
	this.greenScreen = new Filter(this.ctx2, 'identity-flip-vert', 'greenScreen');
	this.ctx2.activeTexture(this.ctx2.TEXTURE0);
	this.tex = loadTexture(this.ctx2, this.c1, false);
	this.ctx2.activeTexture(this.ctx2.TEXTURE1);
	this.tex2 = loadTexture(this.ctx2, document.getElementById('i'), false);
	this.ctx2.activeTexture(this.ctx2.TEXTURE0);
	this.initDone = true;
	},

	doLoad: function() {
	this.video = document.getElementById("video");
	this.c1 = document.getElementById("c1");
	this.ctx1 = this.c1.getContext("2d");
	this.ctx1.globalCompositeOperation = 'copy';
	this.ctx1.fillRect(0,0,this.c1.width, this.c1.height);
	var self = this;
	this.video.addEventListener("play", function() {
	self.init();
	self.width = self.video.videoWidth;
	self.height = self.video.videoHeight;
	self.lastTime = new Date;
	self.timerCallback();
	}, false);
	},

	computeFrame: function() {
	// this.ctx1.drawImage(this.video, 0, 0, this.width, this.height);
	this.ctx2.texImage2D(this.ctx2.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.video);
	this.greenScreen.apply(function(s) {
	s.uniform1i('Texture', 0);
	s.uniform1i('Texture2', 1);
	});

	return;
	}
	};

	</script>
	<script id="identity-flip-vert" type="x-shader/x-vertex">
	attribute vec3 Vertex;
	attribute vec2 Tex;

	varying vec4 texCoord0;
	void main()
	{
	texCoord0 = vec4(Tex.s,1.0-Tex.t,0.0,0.0);
	gl_Position = vec4(Vertex, 1.0);
	}
	</script>
	<script id="greenScreen" type="x-shader/x-fragment">
	precision mediump float;

	uniform sampler2D Texture;
	uniform sampler2D Texture2;

	varying vec4 texCoord0;
	void main()
	{
	vec4 c = texture2D(Texture, texCoord0.st);
	float r = c.r * 0.5;
	float a = c.g * 6.28;
	float x = cos(a) * r;
	float y = sin(a) * r;
	vec4 c2 = texture2D(Texture2, vec2(0.7+x, 0.5+y));
	// Shaders with branches are not allowed when dealing with non-SOP content
	// so instead of "if (b) c2.a = 0;", we use mix()
	bool b = (c.g > 120.0/255.0 && c.r > 120.0/255.0 && c.b < 50.0/255.0);
	c2.a = mix(c2.a, 0.0, float(b));
	gl_FragColor = c2;
	}
	</script>
	<style>
	body {
	background: black;
	color:#CCCCCC;
	}
	a {
	color: white;
	}
	#c2 {
	background-image: url(http://www.mozbox.org/pub/green/foo.png);
	background-repeat: repeat;
	}
	div {
	float: left;
	border :1px solid #444444;
	padding:10px;
	margin: 10px;
	background:#3B3B3B;
	}
	img { display: none; }
	</style>
	</head>
	<body onload="processor.doLoad()">
	<div>
	This is a port of Paul Rouget's <a href="http://blog.mozbox.org/post/2009/02/25/video-canvas%3A-special-effects">Canvas+Video green screen demo</a>, plus a texture lookup from the Firefox logo based on the values of the green and red color channels.
	</div>
	<div>
	<video id="video" controls="true">
	<source src="http://www.mozbox.org/pub/green/video.ogv"></source>
	<source src="http://cs.helsinki.fi/u/ilmarihe/c3d/demos/video.mp4"></source>
	</video>
	<canvas id="c1" width="320" height="192"></canvas>
	</div>
	<div>
	<canvas id="c2" width="640" height="384"></canvas>
	</div>
	<img id="i" src="http://www.mozbox.org/pub/green/foo.png">
	</body>
	</html>