chromium/src/third_party/blink/web_tests/external/wpt/webaudio/the-audio-api/the-analysernode-interface/test-analysernode.html - manifest_repos/chromium_src - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
   <meta charset="utf-8">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
   <script>
     function testNode() {
       var context = new AudioContext();
       var buffer = context.createBuffer(1, 2048, context.sampleRate);
       for (var i = 0; i < 2048; ++i) {
         buffer.getChannelData(0)[i] = Math.sin(
           440 * 2 * Math.PI * i / context.sampleRate
         );
       }

       var destination = context.destination;

       var source = context.createBufferSource();

       var analyser = context.createAnalyser();

       source.buffer = buffer;

       source.connect(analyser);
       analyser.connect(destination);

       assert_equals(
         analyser.channelCount,
         2,
         "analyser node has 2 input channels by default"
       );
       assert_equals(
         analyser.channelCountMode,
         "max",
         "Correct channelCountMode for the analyser node"
       );
       assert_equals(
         analyser.channelInterpretation,
         "speakers",
         "Correct channelCountInterpretation for the analyser node"
       );

       assert_equals(
         analyser.fftSize,
         2048,
         "Correct default value for fftSize"
       );
       assert_equals(
         analyser.frequencyBinCount,
         1024,
         "Correct default value for frequencyBinCount"
       );
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 0;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 1;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 8;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 100;
       }); // non-power of two
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 2049;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 4097;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 8193;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 16385;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 32769;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.fftSize = 65536;
       });
       analyser.fftSize = 1024;
       assert_equals(
         analyser.frequencyBinCount,
         512,
         "Correct new value for frequencyBinCount"
       );

       assert_equals(
         analyser.minDecibels,
         -100,
         "Correct default value for minDecibels"
       );
       assert_equals(
         analyser.maxDecibels,
         -30,
         "Correct default value for maxDecibels"
       );
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.minDecibels = -30;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.minDecibels = -29;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.maxDecibels = -100;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.maxDecibels = -101;
       });

       assert_true(
         Math.abs(analyser.smoothingTimeConstant - 0.8) < 0.001,
         "Correct default value for smoothingTimeConstant"
       );
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.smoothingTimeConstant = -0.1;
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser.smoothingTimeConstant = 1.1;
       });
       analyser.smoothingTimeConstant = 0;
       analyser.smoothingTimeConstant = 1;
     }

     function testConstructor() {
       var context = new AudioContext();

       var analyser = new AnalyserNode(context);
       assert_equals(
         analyser.channelCount,
         2,
         "analyser node has 2 input channels by default"
       );
       assert_equals(
         analyser.channelCountMode,
         "max",
         "Correct channelCountMode for the analyser node"
       );
       assert_equals(
         analyser.channelInterpretation,
         "speakers",
         "Correct channelCountInterpretation for the analyser node"
       );

       assert_equals(
         analyser.fftSize,
         2048,
         "Correct default value for fftSize"
       );
       assert_equals(
         analyser.frequencyBinCount,
         1024,
         "Correct default value for frequencyBinCount"
       );
       assert_equals(
         analyser.minDecibels,
         -100,
         "Correct default value for minDecibels"
       );
       assert_equals(
         analyser.maxDecibels,
         -30,
         "Correct default value for maxDecibels"
       );
       assert_true(
         Math.abs(analyser.smoothingTimeConstant - 0.8) < 0.001,
         "Correct default value for smoothingTimeConstant"
       );

       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 0 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 1 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 8 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 100 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 2049 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 4097 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 8193 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 16385 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 32769 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { fftSize: 65536 });
       });
       analyser = new AnalyserNode(context, { fftSize: 1024 });
       assert_equals(
         analyser.frequencyBinCount,
         512,
         "Correct new value for frequencyBinCount"
       );

       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { minDecibels: -30 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { minDecibels: -29 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { maxDecibels: -100 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { maxDecibels: -101 });
       });

       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { smoothingTimeConstant: -0.1 });
       });
       assert_throws_dom("INDEX_SIZE_ERR", function() {
         analyser = new AnalyserNode(context, { smoothingTimeConstant: -1.1 });
       });
       analyser = new AnalyserNode(context, { smoothingTimeConstant: 0 });
       analyser = new AnalyserNode(context, { smoothingTimeConstant: 1 });
     }
     test(testNode, "Test AnalyserNode API");
     test(testConstructor, "Test AnalyserNode's ctor API");
   </script>
 </head>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<script>
	function testNode() {
	var context = new AudioContext();
	var buffer = context.createBuffer(1, 2048, context.sampleRate);
	for (var i = 0; i < 2048; ++i) {
	buffer.getChannelData(0)[i] = Math.sin(
	440 * 2 * Math.PI * i / context.sampleRate
	);
	}

	var destination = context.destination;

	var source = context.createBufferSource();

	var analyser = context.createAnalyser();

	source.buffer = buffer;

	source.connect(analyser);
	analyser.connect(destination);

	assert_equals(
	analyser.channelCount,
	2,
	"analyser node has 2 input channels by default"
	);
	assert_equals(
	analyser.channelCountMode,
	"max",
	"Correct channelCountMode for the analyser node"
	);
	assert_equals(
	analyser.channelInterpretation,
	"speakers",
	"Correct channelCountInterpretation for the analyser node"
	);

	assert_equals(
	analyser.fftSize,
	2048,
	"Correct default value for fftSize"
	);
	assert_equals(
	analyser.frequencyBinCount,
	1024,
	"Correct default value for frequencyBinCount"
	);
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 0;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 1;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 8;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 100;
	}); // non-power of two
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 2049;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 4097;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 8193;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 16385;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 32769;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.fftSize = 65536;
	});
	analyser.fftSize = 1024;
	assert_equals(
	analyser.frequencyBinCount,
	512,
	"Correct new value for frequencyBinCount"
	);

	assert_equals(
	analyser.minDecibels,
	-100,
	"Correct default value for minDecibels"
	);
	assert_equals(
	analyser.maxDecibels,
	-30,
	"Correct default value for maxDecibels"
	);
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.minDecibels = -30;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.minDecibels = -29;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.maxDecibels = -100;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.maxDecibels = -101;
	});

	assert_true(
	Math.abs(analyser.smoothingTimeConstant - 0.8) < 0.001,
	"Correct default value for smoothingTimeConstant"
	);
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.smoothingTimeConstant = -0.1;
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser.smoothingTimeConstant = 1.1;
	});
	analyser.smoothingTimeConstant = 0;
	analyser.smoothingTimeConstant = 1;
	}

	function testConstructor() {
	var context = new AudioContext();

	var analyser = new AnalyserNode(context);
	assert_equals(
	analyser.channelCount,
	2,
	"analyser node has 2 input channels by default"
	);
	assert_equals(
	analyser.channelCountMode,
	"max",
	"Correct channelCountMode for the analyser node"
	);
	assert_equals(
	analyser.channelInterpretation,
	"speakers",
	"Correct channelCountInterpretation for the analyser node"
	);

	assert_equals(
	analyser.fftSize,
	2048,
	"Correct default value for fftSize"
	);
	assert_equals(
	analyser.frequencyBinCount,
	1024,
	"Correct default value for frequencyBinCount"
	);
	assert_equals(
	analyser.minDecibels,
	-100,
	"Correct default value for minDecibels"
	);
	assert_equals(
	analyser.maxDecibels,
	-30,
	"Correct default value for maxDecibels"
	);
	assert_true(
	Math.abs(analyser.smoothingTimeConstant - 0.8) < 0.001,
	"Correct default value for smoothingTimeConstant"
	);

	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 0 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 1 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 8 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 100 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 2049 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 4097 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 8193 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 16385 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 32769 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { fftSize: 65536 });
	});
	analyser = new AnalyserNode(context, { fftSize: 1024 });
	assert_equals(
	analyser.frequencyBinCount,
	512,
	"Correct new value for frequencyBinCount"
	);

	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { minDecibels: -30 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { minDecibels: -29 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { maxDecibels: -100 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { maxDecibels: -101 });
	});

	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { smoothingTimeConstant: -0.1 });
	});
	assert_throws_dom("INDEX_SIZE_ERR", function() {
	analyser = new AnalyserNode(context, { smoothingTimeConstant: -1.1 });
	});
	analyser = new AnalyserNode(context, { smoothingTimeConstant: 0 });
	analyser = new AnalyserNode(context, { smoothingTimeConstant: 1 });
	}
	test(testNode, "Test AnalyserNode API");
	test(testConstructor, "Test AnalyserNode's ctor API");
	</script>
	</head>
	</body>
	</html>