third_party/WebKit/LayoutTests/webaudio/ChannelMerger/audiochannelmerger-disconnect.html - Issue 2781123002: Convert ChannelMerger tests to new Audit

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Issue 2781123002: Convert ChannelMerger tests to new Audit (Closed)

Patch Set: Created 3 years, 8 months ago

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1 <!DOCTYPE html>	1 <!DOCTYPE html>

2 <html>	2 <html>

3	3

4 <head>	4 <head>

5 <script src="../../resources/testharness.js"></script>	5 <script src="../../resources/testharness.js"></script>

6 <script src="../../resources/testharnessreport.js"></script>	6 <script src="../../resources/testharnessreport.js"></script>

7 <script src="../resources/audit-util.js"></script>	7 <script src="../resources/audit-util.js"></script>

8 <script src="../resources/audio-testing.js"></script>	8 <script src="../resources/audit.js"></script>

9 </head>	9 </head>

10	10

11 <body>	11 <body>

12 <script>	12 <script>

13	13

14 var renderQuantum = 128;	14 var renderQuantum = 128;

15	15

16 var numberOfChannels = 2;	16 var numberOfChannels = 2;

17 var sampleRate = 44100;	17 var sampleRate = 44100;

18 var renderDuration = 0.5;	18 var renderDuration = 0.5;

19 var disconnectTime = 0.5 * renderDuration;	19 var disconnectTime = 0.5 * renderDuration;

20	20

21 var audit = Audit.createTaskRunner();	21 var audit = Audit.createTaskRunner();

22	22

23 // Task: Check if the merger outputs a silent channel when an input is	23 // Task: Check if the merger outputs a silent channel when an input is

24 // disconnected.	24 // disconnected.

25 audit.defineTask('silent-disconnect', function (done) {	25 audit.define('silent-disconnect', (task, should) => {

26 var context = new OfflineAudioContext(numberOfChannels, renderDuration * s ampleRate, sampleRate);	26 var context = new OfflineAudioContext(numberOfChannels, renderDuration * s ampleRate, sampleRate);

27 var merger = context.createChannelMerger();	27 var merger = context.createChannelMerger();

28 var source1 = context.createBufferSource();	28 var source1 = context.createBufferSource();

29 var source2 = context.createBufferSource();	29 var source2 = context.createBufferSource();

30	30

31 // Create and assign a constant buffer.	31 // Create and assign a constant buffer.

32 var bufferDCOffset = createConstantBuffer(context, 1, 1);	32 var bufferDCOffset = createConstantBuffer(context, 1, 1);

33 source1.buffer = source2.buffer = bufferDCOffset;	33 source1.buffer = source2.buffer = bufferDCOffset;

34 source1.loop = source2.loop = true;	34 source1.loop = source2.loop = true;

35	35

36 // Connect the output of source into the 4th input of merger. The merger	36 // Connect the output of source into the 4th input of merger. The merger

37 // should produce 6 channel output.	37 // should produce 6 channel output.

38 source1.connect(merger, 0, 0);	38 source1.connect(merger, 0, 0);

39 source2.connect(merger, 0, 1);	39 source2.connect(merger, 0, 1);

40 merger.connect(context.destination);	40 merger.connect(context.destination);

41 source1.start();	41 source1.start();

42 source2.start();	42 source2.start();

43	43

44 // Schedule the disconnection of \|source2\| at the half of render duration.	44 // Schedule the disconnection of \|source2\| at the half of render duration.

45 context.suspend(disconnectTime).then(function () {	45 context.suspend(disconnectTime).then(function () {

46 source2.disconnect();	46 source2.disconnect();

47 context.resume();	47 context.resume();

48 });	48 });

49	49

50 context.startRendering().then(function (buffer) {	50 context.startRendering().then(function (buffer) {

51 // The entire first channel of the output should be 1.	51 // The entire first channel of the output should be 1.

52 Should('Channel #0', buffer.getChannelData(0)).beConstantValueOf(1);	52 should(buffer.getChannelData(0), 'Channel #0').beConstantValueOf(1);

53	53

54 // Calculate the first zero index in the second channel.	54 // Calculate the first zero index in the second channel.

55 var channel1 = buffer.getChannelData(1);	55 var channel1 = buffer.getChannelData(1);

56 var disconnectIndex = disconnectTime * sampleRate;	56 var disconnectIndex = disconnectTime * sampleRate;

57 disconnectIndex -= (disconnectIndex) % renderQuantum;	57 disconnectIndex -= (disconnectIndex) % renderQuantum;

58 var firstZeroIndex = channel1.findIndex(function (element, index) {	58 var firstZeroIndex = channel1.findIndex(function (element, index) {

59 if (element === 0)	59 if (element === 0)

60 return index;	60 return index;

61 });	61 });

62	62

63 // The second channel should contain 1, and 0 after the disconnection.	63 // The second channel should contain 1, and 0 after the disconnection.

64 Should('Channel #1', channel1).containValues([1, 0]);	64 should(channel1, 'Channel #1').containValues([1, 0]);

65 Should('The index of first zero in the channel #1', firstZeroIndex)	65 should(firstZeroIndex, 'The index of first zero in the channel #1')

66 .beEqualTo(disconnectIndex);	66 .beEqualTo(disconnectIndex);

67	67

68 }).then(done);	68 }).then(() => task.done());

69 });	69 });

70	70

71 audit.defineTask('finish', function (done) {	71 audit.run();

72 done();

73 });

74

75 audit.runTasks();

76

77 successfullyParsed = true;

78 </script>	72 </script>

79 </body>	73 </body>

80	74

81 </html>	75 </html>

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