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| 1 <!doctype html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <title>Test Convolver Channel Outputs for Response with 4 channels</title> | 4 <title> |
| 5 Test Convolver Channel Outputs for Response with 4 channels |
| 6 </title> |
| 5 <script src="../../resources/testharness.js"></script> | 7 <script src="../../resources/testharness.js"></script> |
| 6 <script src="../../resources/testharnessreport.js"></script> | 8 <script src="../../resources/testharnessreport.js"></script> |
| 7 <script src="../resources/audit-util.js"></script> | 9 <script src="../resources/audit-util.js"></script> |
| 8 <script src="../resources/audit.js"></script> | 10 <script src="../resources/audit.js"></script> |
| 9 </head> | 11 </head> |
| 10 | |
| 11 <body> | 12 <body> |
| 12 <script> | 13 <script id="layout-test-code"> |
| 13 // Test various convolver configurations when the convolver response has | 14 // Test various convolver configurations when the convolver response has |
| 14 // a four channels. | 15 // a four channels. |
| 15 | 16 |
| 16 // Fairly arbitrary sample rate, except that we want the rate to be a | 17 // Fairly arbitrary sample rate, except that we want the rate to be a |
| 17 // power of two so that 1/sampleRate is exactly respresentable as a | 18 // power of two so that 1/sampleRate is exactly respresentable as a |
| 18 // single-precision float. | 19 // single-precision float. |
| 19 let sampleRate = 8192; | 20 let sampleRate = 8192; |
| 20 | 21 |
| 21 // A fairly arbitrary number of frames, except the number of frames should | 22 // A fairly arbitrary number of frames, except the number of frames should |
| 22 // be more than a few render quanta. | 23 // be more than a few render quanta. |
| 23 let renderFrames = 10 * 128; | 24 let renderFrames = 10 * 128; |
| 24 | 25 |
| 25 let audit = Audit.createTaskRunner(); | 26 let audit = Audit.createTaskRunner(); |
| 26 | 27 |
| 27 // Convolver response | 28 // Convolver response |
| 28 let response; | 29 let response; |
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| 90 { | 91 { |
| 91 label: '5.1-channel input', | 92 label: '5.1-channel input', |
| 92 description: '5.1->2 downmix producing 2-channel output' | 93 description: '5.1->2 downmix producing 2-channel output' |
| 93 }, | 94 }, |
| 94 (task, should) => { | 95 (task, should) => { |
| 95 fourChannelResponseTest({numberOfInputs: 6, prefix: '5.1'}, should) | 96 fourChannelResponseTest({numberOfInputs: 6, prefix: '5.1'}, should) |
| 96 .then(() => task.done()); | 97 .then(() => task.done()); |
| 97 }); | 98 }); |
| 98 | 99 |
| 99 audit.define( | 100 audit.define( |
| 100 { | 101 { |
| 101 label: 'delayed buffer set', | 102 label: 'delayed buffer set', |
| 102 description: 'Delayed set of 4-channel response' | 103 description: 'Delayed set of 4-channel response' |
| 103 }, | 104 }, |
| 104 (task, should) => { | 105 (task, should) => { |
| 105 // Don't really care about the output for this test. It's to verify | 106 // Don't really care about the output for this test. It's to verify |
| 106 // we don't crash in a debug build when setting the convolver buffer | 107 // we don't crash in a debug build when setting the convolver buffer |
| 107 // after creating the graph. | 108 // after creating the graph. |
| 108 let context = new OfflineAudioContext(1, renderFrames, sampleRate); | 109 let context = new OfflineAudioContext(1, renderFrames, sampleRate); |
| 109 let src = new OscillatorNode(context); | 110 let src = new OscillatorNode(context); |
| 110 let convolver = new ConvolverNode(context, { | 111 let convolver = |
| 111 disableNormalization: true | 112 new ConvolverNode(context, {disableNormalization: true}); |
| 113 let buffer = new AudioBuffer({ |
| 114 numberOfChannels: 4, |
| 115 length: 4, |
| 116 sampleRate: context.sampleRate |
| 117 }); |
| 118 |
| 119 // Impulse responses for the convolver aren't important, as long as |
| 120 // it's not all zeroes. |
| 121 for (let k = 0; k < buffer.numberOfChannels; ++k) { |
| 122 buffer.getChannelData(k).fill(1); |
| 123 } |
| 124 |
| 125 src.connect(convolver).connect(context.destination); |
| 126 |
| 127 // Set the buffer after a few render quanta have passed. The actual |
| 128 // value must be least one, but is otherwise arbitrary. |
| 129 context.suspend(512 / context.sampleRate) |
| 130 .then(() => convolver.buffer = buffer) |
| 131 .then(() => context.resume()); |
| 132 |
| 133 src.start(); |
| 134 context.startRendering() |
| 135 .then(audioBuffer => { |
| 136 // Just make sure output is not silent. |
| 137 should( |
| 138 audioBuffer.getChannelData(0), |
| 139 'Output with delayed setting of convolver buffer') |
| 140 .notBeConstantValueOf(0); |
| 141 }) |
| 142 .then(() => task.done()); |
| 112 }); | 143 }); |
| 113 let buffer = new AudioBuffer({ | |
| 114 numberOfChannels: 4, | |
| 115 length: 4, | |
| 116 sampleRate: context.sampleRate | |
| 117 }); | |
| 118 | |
| 119 // Impulse responses for the convolver aren't important, as long as | |
| 120 // it's not all zeroes. | |
| 121 for (let k = 0; k < buffer.numberOfChannels; ++k) { | |
| 122 buffer.getChannelData(k).fill(1); | |
| 123 } | |
| 124 | |
| 125 src.connect(convolver).connect(context.destination); | |
| 126 | |
| 127 // Set the buffer after a few render quanta have passed. The actual | |
| 128 // value must be least one, but is otherwise arbitrary. | |
| 129 context.suspend(512 / context.sampleRate) | |
| 130 .then(() => convolver.buffer = buffer) | |
| 131 .then(() => context.resume()); | |
| 132 | |
| 133 src.start(); | |
| 134 context.startRendering() | |
| 135 .then(audioBuffer => { | |
| 136 // Just make sure output is not silent. | |
| 137 should(audioBuffer.getChannelData(0), | |
| 138 'Output with delayed setting of convolver buffer') | |
| 139 .notBeConstantValueOf(0); | |
| 140 }) | |
| 141 .then(() => task.done()); | |
| 142 }); | |
| 143 | 144 |
| 144 function fourChannelResponseTest(options, should) { | 145 function fourChannelResponseTest(options, should) { |
| 145 // Create an 4-channel offline context. The first two channels are for | 146 // Create an 4-channel offline context. The first two channels are for |
| 146 // the stereo output of the convolver and the next two channels are for | 147 // the stereo output of the convolver and the next two channels are for |
| 147 // the reference stereo signal. | 148 // the reference stereo signal. |
| 148 let context = new OfflineAudioContext(4, renderFrames, sampleRate); | 149 let context = new OfflineAudioContext(4, renderFrames, sampleRate); |
| 149 context.destination.channelInterpretation = 'discrete'; | 150 context.destination.channelInterpretation = 'discrete'; |
| 150 | 151 |
| 151 // Create oscillators for use as the input. The type and frequency is | 152 // Create oscillators for use as the input. The type and frequency is |
| 152 // arbitrary except that oscillators must be different. | 153 // arbitrary except that oscillators must be different. |
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| 251 .beEqualToArray(expected0); | 252 .beEqualToArray(expected0); |
| 252 should(actual1, options.prefix + ': Channel 1') | 253 should(actual1, options.prefix + ': Channel 1') |
| 253 .beEqualToArray(expected1); | 254 .beEqualToArray(expected1); |
| 254 }); | 255 }); |
| 255 } | 256 } |
| 256 | 257 |
| 257 audit.run(); | 258 audit.run(); |
| 258 </script> | 259 </script> |
| 259 </body> | 260 </body> |
| 260 </html> | 261 </html> |
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