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| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <title>Test decodeAudioData promises</title> |
| 5 |
| 6 <script src="../resources/js-test.js"></script> |
| 7 <script src="resources/compatibility.js"></script> |
| 8 <script src="resources/audio-testing.js"></script> |
| 9 </head> |
| 10 |
| 11 <body> |
| 12 <script> |
| 13 description("Basic tests for decodeAudioData promise."); |
| 14 |
| 15 window.jsTestIsAsync = true; |
| 16 |
| 17 var context = new AudioContext(); |
| 18 // Test files for decodeAudioData |
| 19 var validAudioFile = "resources/media/24bit-44khz.wav"; |
| 20 var invalidAudioFile = "resources/media/invalid-audio-file.txt"; |
| 21 |
| 22 // Decoded data from validAudioFile |
| 23 var referenceDecodedAudioBuffer; |
| 24 // Encoded audio data for testing decodeAudioData after the context has been
closed. |
| 25 var encodedAudioData; |
| 26 // Decoded data from decodeAudioData after the context has been closed. |
| 27 var decodedAudioBufferAfterClose; |
| 28 |
| 29 // Utility to load an encoded audio file from |url| and decode it. |success
| and |failure| are |
| 30 // functions to handle the then and else cases of the promise returned by de
codeAudioData. |
| 31 function runDecode(url, success, failure, done) { |
| 32 var request = new XMLHttpRequest(); |
| 33 request.open("GET", url, true); |
| 34 request.responseType = "arraybuffer"; |
| 35 |
| 36 request.onload = function () { |
| 37 context.decodeAudioData(request.response) |
| 38 .then(success, failure) |
| 39 .then(done); |
| 40 }; |
| 41 |
| 42 request.send(); |
| 43 } |
| 44 |
| 45 // Compare that two audio buffers are the same |
| 46 function audioBuffersCompareEqual(actualBuffer, expectedBuffer) { |
| 47 if (actualBuffer.length != expectedBuffer.length) { |
| 48 testFailed("Decoded buffer length is " + actualBuffer.length + ", but ex
pected " + expectedBuffer.length); |
| 49 return false; |
| 50 } |
| 51 |
| 52 if (actualBuffer.duration != expectedBuffer.duration) { |
| 53 testFailed("Decoded buffer duration is " + actualBuffer.duration + ", bu
t expected " + expectedBuffer.duration); |
| 54 return false; |
| 55 } |
| 56 |
| 57 if (actualBuffer.sampleRate != expectedBuffer.sampleRate) { |
| 58 //testFailed("Decoded buffer rate is " + actualBuffer.sampleRate + ", bu
t expected " + expectedBuffer.sampleRate); |
| 59 return false; |
| 60 } |
| 61 |
| 62 if (actualBuffer.numberOfChannels != expectedBuffer.numberOfChannels) { |
| 63 //testFailed("Decoded buffer has " + actualBuffer.numberOfChannels + "ch
annels , but expected " + expectedBuffer.numberOfChannels); |
| 64 return false; |
| 65 } |
| 66 |
| 67 for (var c = 0; c < expectedBuffer.numberOfChannels; ++c) { |
| 68 var actualData = actualBuffer.getChannelData(c); |
| 69 var expectedData = expectedBuffer.getChannelData(c); |
| 70 for (var k = 0; k < expectedData.length; ++k) { |
| 71 if (actualData[k] != expectedData[k]) { |
| 72 //testFailed("Decoded buffer differs from expected at channel " + c
+ " frame " + k + ": " + actualData[k] + ", expected " + expectedData[k]); |
| 73 return false; |
| 74 } |
| 75 } |
| 76 } |
| 77 |
| 78 return true; |
| 79 } |
| 80 |
| 81 // Tests |
| 82 var audit = Audit.createTaskRunner(); |
| 83 |
| 84 // Test that a null audioBuffer causes the promise to be rejected with an In
validStateError. |
| 85 audit.defineTask("null-audiobuffer", function (done) { |
| 86 context.decodeAudioData(null).then(function () { |
| 87 testFailed("decodeAudioData(null) incorrectly resolved promise successfu
lly."); |
| 88 }, function (e) { |
| 89 testPassed("decodeAudioData(null) correctly rejected promise: " + e.toSt
ring()); |
| 90 }).then(done); |
| 91 }); |
| 92 |
| 93 // Decode a valid encoded file and verify that the promise succeeds correctl
y. |
| 94 audit.defineTask('decode-valid-file', function (done) { |
| 95 var url = validAudioFile; |
| 96 runDecode(url, |
| 97 function (buffer) { |
| 98 // Save the buffer for later testing. |
| 99 referenceDecodedAudioBuffer = buffer; |
| 100 testPassed("Correctly succeeded in decoding " + url); |
| 101 }, |
| 102 function (e) { |
| 103 testFailed("Incorrectly failed to decode " + url + ": " + e.toString()
); |
| 104 }, done); |
| 105 }); |
| 106 |
| 107 // Decode a valid encoded file and verify that the promise is rejected corre
ctly. |
| 108 audit.defineTask("decode-invalid-file", function (done) { |
| 109 var url = invalidAudioFile; |
| 110 runDecode(url, |
| 111 function (buffer) { |
| 112 testFailed("Incorrectly succeeded in decoding " + url); |
| 113 }, |
| 114 function (e) { |
| 115 testPassed("Correctly failed to decode " + url + ": " + e.toString()); |
| 116 }, done); |
| 117 }); |
| 118 |
| 119 // Decode a valid file and verify that the promise is fulfilled and the succ
essCallback is |
| 120 // invoked and both have identical decode audio buffers. |
| 121 audit.defineTask("promise-and-success-callback", function (done) { |
| 122 var request = new XMLHttpRequest(); |
| 123 request.open("GET", validAudioFile, true); |
| 124 request.responseType = "arraybuffer"; |
| 125 |
| 126 request.onload = function () { |
| 127 var p; |
| 128 var prefix = "Decoding valid file: "; |
| 129 p = context.decodeAudioData(request.response, |
| 130 function (callbackBuffer) { |
| 131 p.then(function (promiseBuffer) { |
| 132 if (promiseBuffer == callbackBuffer) |
| 133 testPassed(prefix + "Promise and successCallback succeeded with
identical buffers"); |
| 134 else |
| 135 testFailed(prefix + "Promise and successCallback succeeded with
NON-identical buffers"); |
| 136 }).then(done); |
| 137 }, |
| 138 function (e) { |
| 139 p.then(function () { |
| 140 testFailed(prefix + "Promise fulfilled but errorCallback invoked!!
!"); |
| 141 }, function () { |
| 142 testFailed(prefix + "Expected decoding to succeed but promise reje
cted and errorCallback invoked:" + e); |
| 143 }).then(done); |
| 144 }); |
| 145 }; |
| 146 |
| 147 request.send(); |
| 148 }); |
| 149 |
| 150 // Decode an invalid file and verify that the promise is rejected and the er
rorCallback is |
| 151 // invoked. |
| 152 audit.defineTask("promise-and-error-callback", function (done) { |
| 153 var request = new XMLHttpRequest(); |
| 154 request.open("GET", invalidAudioFile, true); |
| 155 request.responseType = "arraybuffer"; |
| 156 |
| 157 request.onload = function () { |
| 158 var p; |
| 159 var prefix = "Decoding invalid file: "; |
| 160 p = context.decodeAudioData(request.response, |
| 161 function () { |
| 162 p.then(function () { |
| 163 testFailed(prefix + "Expected decoding to fail but promise fulfill
ed and successCallback invoked!!!"); |
| 164 }, function (e) { |
| 165 testFailed(prefix + "Expected decoding to fail but promise rejecte
d and successCallback invoked:" + e + "!!!"); |
| 166 }).then(done); |
| 167 }, |
| 168 function () { |
| 169 p.then(function () { |
| 170 testFailed(prefix + "Promise erroneously fulfilled but errorCallba
ck correctly invoked!!!"); |
| 171 }, function (e) { |
| 172 testPassed(prefix + "Promise correctly rejected and errorCallback
correctly invoked: " + e); |
| 173 }).then(done); |
| 174 }); |
| 175 }; |
| 176 |
| 177 request.send(); |
| 178 }); |
| 179 |
| 180 // Just load up a file so we can run decodeAudioData on it |
| 181 audit.defineTask("load-data", function (done) { |
| 182 var request = new XMLHttpRequest(); |
| 183 request.open("GET", validAudioFile, true); |
| 184 request.responseType = "arraybuffer"; |
| 185 |
| 186 request.onload = function () { |
| 187 encodedAudioData = request.response; |
| 188 done(); |
| 189 }; |
| 190 |
| 191 request.send(); |
| 192 }); |
| 193 |
| 194 // If the context is closing before decodeAudioData has finished decoding, w
e should reject the |
| 195 // promise from decodeAudioData. |
| 196 audit.defineTask("close-context-with-pending-decode", function (done) { |
| 197 context.close() |
| 198 .then(function () { |
| 199 context.decodeAudioData(encodedAudioData).then(function (b) { |
| 200 decodedAudioBufferAfterClose = b; |
| 201 // Compare this buffer with the previously decoded buffer. Pass i
f they're identical. |
| 202 if (audioBuffersCompareEqual(decodedAudioBufferAfterClose, referen
ceDecodedAudioBuffer)) { |
| 203 testPassed("Correctly decoded data after the context has been cl
osed"); |
| 204 } else { |
| 205 testFailed("decodeAudioData succeeded, but data is incorrect"); |
| 206 } |
| 207 }, function (e) { |
| 208 testFailed("Failed to decode valid file after context has been clo
sed: " + e); |
| 209 }).then(done); |
| 210 }); |
| 211 }); |
| 212 |
| 213 audit.defineTask("finish", function (done) { |
| 214 finishJSTest(); |
| 215 done(); |
| 216 }); |
| 217 |
| 218 audit.runTasks( |
| 219 "null-audiobuffer", |
| 220 "decode-valid-file", |
| 221 "decode-invalid-file", |
| 222 "promise-and-success-callback", |
| 223 "promise-and-error-callback", |
| 224 "load-data", |
| 225 "close-context-with-pending-decode", |
| 226 "finish" |
| 227 ); |
| 228 |
| 229 successfullyParsed = true; |
| 230 </script> |
| 231 </body> |
| 232 </html> |
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Chromium Code Reviews
Issue 1006963003:
AudioContext.decodeAudioData returns a Promise (Closed)
Base URL: svn://svn.chromium.org/blink/trunk