OLD | NEW |
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; |
(...skipping 61 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
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. |
(...skipping 98 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
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> |
OLD | NEW |