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| 1 <!doctype html> |
| 2 <html> |
| 3 <head> |
| 4 <script src="../resources/js-test.js"></script> |
| 5 <script src="resources/compatibility.js"></script> |
| 6 <script src="resources/audio-testing.js"></script> |
| 7 <script src="resources/panner-formulas.js"></script> |
| 8 <title>Test Automation of PannerNode Positions</title> |
| 9 </head> |
| 10 |
| 11 <body> |
| 12 <script> |
| 13 description("Test Automation of PannerNode Positions."); |
| 14 window.jsTestIsAsync = true; |
| 15 |
| 16 var sampleRate = 48000; |
| 17 // These tests are quite slow, so don't run for many frames. 256 frames s
hould be enough to |
| 18 // demonstrate that automations are working. |
| 19 var renderFrames = 256; |
| 20 var renderDuration = renderFrames / sampleRate; |
| 21 |
| 22 var context; |
| 23 var panner; |
| 24 |
| 25 var audit = Audit.createTaskRunner(); |
| 26 |
| 27 // Set of tests for the panner node with automations applied to the positi
on of the source. |
| 28 var testConfigs = [{ |
| 29 // Distance model parameters for the panner |
| 30 distanceModel: { |
| 31 model: "inverse", |
| 32 rolloff: 1 |
| 33 }, |
| 34 // Initial location of the source |
| 35 startPosition: [0, 0, 1], |
| 36 // Final position of the source. For this test, we only want to move on
the z axis which |
| 37 // doesn't change the azimuth angle. |
| 38 endPosition: [0, 0, 10000], |
| 39 }, { |
| 40 distanceModel: { |
| 41 model: "inverse", |
| 42 rolloff: 1 |
| 43 }, |
| 44 startPosition: [0, 0, 1], |
| 45 // An essentially random end position, but it should be such that azimut
h angle changes as |
| 46 // we move from the start to the end. |
| 47 endPosition: [20000, 30000, 10000], |
| 48 errorThreshold: [{ |
| 49 // Error threshold for 1-channel case |
| 50 relativeThreshold: 4.8124e-7 |
| 51 }, { |
| 52 // Error threshold for 2-channel case |
| 53 relativeThreshold: 4.3267e-7 |
| 54 }], |
| 55 }, { |
| 56 distanceModel: { |
| 57 model: "exponential", |
| 58 rolloff: 1.5 |
| 59 }, |
| 60 startPosition: [0, 0, 1], |
| 61 endPosition: [20000, 30000, 10000], |
| 62 errorThreshold: [{ |
| 63 relativeThreshold: 5.0783e-7 |
| 64 }, { |
| 65 relativeThreshold: 5.2180e-7 |
| 66 }] |
| 67 }, { |
| 68 distanceModel: { |
| 69 model: "linear", |
| 70 rolloff: 1 |
| 71 }, |
| 72 startPosition: [0, 0, 1], |
| 73 endPosition: [20000, 30000, 10000], |
| 74 errorThreshold: [{ |
| 75 relativeThreshold: 6.5324e-6 |
| 76 }, { |
| 77 relativeThreshold: 6.5756e-6 |
| 78 }] |
| 79 }]; |
| 80 |
| 81 for (var k = 0; k < testConfigs.length; ++k) { |
| 82 var config = testConfigs[k]; |
| 83 var tester = function (c, channelCount) { |
| 84 return function (done) { |
| 85 runTest(c, channelCount).then(done); |
| 86 } |
| 87 }; |
| 88 |
| 89 var baseTestName = config.distanceModel.model + " rolloff: " + config.di
stanceModel.rolloff; |
| 90 |
| 91 // Define tasks for both 1-channel and 2-channel |
| 92 audit.defineTask(k + ": 1-channel " + baseTestName, tester(config, 1)); |
| 93 audit.defineTask(k + ": 2-channel " + baseTestName, tester(config, 2)); |
| 94 } |
| 95 |
| 96 audit.defineTask("finish", function (done) { |
| 97 finishJSTest(); |
| 98 done(); |
| 99 }); |
| 100 |
| 101 audit.runTasks(); |
| 102 |
| 103 function runTest(options, channelCount) { |
| 104 // Output has 5 channels: channels 0 and 1 are for the stereo output of
the panner node. |
| 105 // Channels 2-5 are the for automation of the x,y,z coordinate so that w
e have actual |
| 106 // coordinates used for the panner automation. |
| 107 context = new OfflineAudioContext(5, renderFrames, sampleRate); |
| 108 |
| 109 // Stereo source for the panner. |
| 110 var source = context.createBufferSource(); |
| 111 source.buffer = createConstantBuffer(context, renderFrames, channelCount
== 1 ? 1 : [1, 2]); |
| 112 |
| 113 panner = context.createPanner(); |
| 114 panner.distanceModel = options.distanceModel.model; |
| 115 panner.rolloffFactor = options.distanceModel.rolloff; |
| 116 panner.panningModel = "equalpower"; |
| 117 |
| 118 // Source and gain node for the z-coordinate calculation. |
| 119 var dist = context.createBufferSource(); |
| 120 dist.buffer = createConstantBuffer(context, 1, 1); |
| 121 dist.loop = true; |
| 122 var gainX = context.createGain(); |
| 123 var gainY = context.createGain(); |
| 124 var gainZ = context.createGain(); |
| 125 dist.connect(gainX); |
| 126 dist.connect(gainY); |
| 127 dist.connect(gainZ); |
| 128 |
| 129 // Set the gain automation to match the z-coordinate automation of the p
anner. |
| 130 |
| 131 // End the automation some time before the end of the rendering so we ca
n verify that |
| 132 // automation has the correct end time and value. |
| 133 var endAutomationTime = 0.75 * renderDuration; |
| 134 |
| 135 gainX.gain.setValueAtTime(options.startPosition[0], 0); |
| 136 gainX.gain.linearRampToValueAtTime(options.endPosition[0], endAutomation
Time); |
| 137 gainY.gain.setValueAtTime(options.startPosition[1], 0); |
| 138 gainY.gain.linearRampToValueAtTime(options.endPosition[1], endAutomation
Time); |
| 139 gainZ.gain.setValueAtTime(options.startPosition[2], 0); |
| 140 gainZ.gain.linearRampToValueAtTime(options.endPosition[2], endAutomation
Time); |
| 141 |
| 142 dist.start(); |
| 143 |
| 144 // Splitter and merger to map the panner output and the z-coordinate aut
omation to the |
| 145 // correct channels in the destination. |
| 146 var splitter = context.createChannelSplitter(2); |
| 147 var merger = context.createChannelMerger(5); |
| 148 |
| 149 source.connect(panner); |
| 150 // Split the output of the panner to separate channels |
| 151 panner.connect(splitter); |
| 152 |
| 153 // Merge the panner outputs and the z-coordinate output to the correct d
estination channels. |
| 154 splitter.connect(merger, 0, 0); |
| 155 splitter.connect(merger, 1, 1); |
| 156 gainX.connect(merger, 0, 2); |
| 157 gainY.connect(merger, 0, 3); |
| 158 gainZ.connect(merger, 0, 4); |
| 159 |
| 160 merger.connect(context.destination); |
| 161 |
| 162 // Initialize starting point of the panner. |
| 163 panner.positionX.setValueAtTime(options.startPosition[0], 0); |
| 164 panner.positionY.setValueAtTime(options.startPosition[1], 0); |
| 165 panner.positionZ.setValueAtTime(options.startPosition[2], 0); |
| 166 |
| 167 // Automate z coordinate to move away from the listener |
| 168 panner.positionX.linearRampToValueAtTime(options.endPosition[0], 0.75 *
renderDuration); |
| 169 panner.positionY.linearRampToValueAtTime(options.endPosition[1], 0.75 *
renderDuration); |
| 170 panner.positionZ.linearRampToValueAtTime(options.endPosition[2], 0.75 *
renderDuration); |
| 171 |
| 172 source.start(); |
| 173 |
| 174 // Go! |
| 175 return context.startRendering() |
| 176 .then(function (renderedBuffer) { |
| 177 // Get the panner outputs |
| 178 var data0 = renderedBuffer.getChannelData(0); |
| 179 var data1 = renderedBuffer.getChannelData(1); |
| 180 var xcoord = renderedBuffer.getChannelData(2); |
| 181 var ycoord = renderedBuffer.getChannelData(3); |
| 182 var zcoord = renderedBuffer.getChannelData(4); |
| 183 |
| 184 // We're doing a linear ramp on the Z axis with the equalpower panne
r, so the equalpower |
| 185 // panning gain remains constant. We only need to model the distanc
e effect. |
| 186 |
| 187 // Compute the distance gain |
| 188 var distanceGain = new Float32Array(xcoord.length);; |
| 189 |
| 190 if (panner.distanceModel === "inverse") { |
| 191 for (var k = 0; k < distanceGain.length; ++k) { |
| 192 distanceGain[k] = inverseDistance(panner, xcoord[k], ycoord[k],
zcoord[k]) |
| 193 } |
| 194 } else if (panner.distanceModel === "linear") { |
| 195 for (var k = 0; k < distanceGain.length; ++k) { |
| 196 distanceGain[k] = linearDistance(panner, xcoord[k], ycoord[k], z
coord[k]) |
| 197 } |
| 198 } else if (panner.distanceModel === "exponential") { |
| 199 for (var k = 0; k < distanceGain.length; ++k) { |
| 200 distanceGain[k] = exponentialDistance(panner, xcoord[k], ycoord[
k], zcoord[k]) |
| 201 } |
| 202 } |
| 203 |
| 204 // Compute the expected result. Since we're on the z-axis, the left
and right channels |
| 205 // pass through the equalpower panner unchanged. Only need to apply
the distance gain. |
| 206 var buffer0 = source.buffer.getChannelData(0); |
| 207 var buffer1 = channelCount == 2 ? source.buffer.getChannelData(1) :
buffer0; |
| 208 |
| 209 var azimuth = new Float32Array(buffer0.length); |
| 210 |
| 211 for (var k = 0; k < data0.length; ++k) { |
| 212 azimuth[k] = calculateAzimuth([ |
| 213 xcoord[k], |
| 214 ycoord[k], |
| 215 zcoord[k] |
| 216 ], [ |
| 217 context.listener.positionX.value, |
| 218 context.listener.positionY.value, |
| 219 context.listener.positionZ.value |
| 220 ], [ |
| 221 context.listener.forwardX.value, |
| 222 context.listener.forwardY.value, |
| 223 context.listener.forwardZ.value |
| 224 ], [ |
| 225 context.listener.upX.value, |
| 226 context.listener.upY.value, |
| 227 context.listener.upZ.value |
| 228 ]); |
| 229 } |
| 230 |
| 231 var expected = applyPanner(azimuth, buffer0, buffer1, channelCount); |
| 232 var expected0 = expected.left; |
| 233 var expected1 = expected.right; |
| 234 |
| 235 for (var k = 0; k < expected0.length; ++k) { |
| 236 expected0[k] *= distanceGain[k]; |
| 237 expected1[k] *= distanceGain[k]; |
| 238 } |
| 239 |
| 240 var info = options.distanceModel.model + ", rolloff: " + options.dis
tanceModel.rolloff; |
| 241 var prefix = channelCount + "-channel " |
| 242 + "[" + options.startPosition[0] + ", " |
| 243 + options.startPosition[1] + ", " |
| 244 + options.startPosition[2] + "] -> [" |
| 245 + options.endPosition[0] + ", " |
| 246 + options.endPosition[1] + ", " |
| 247 + options.endPosition[2] + "]: "; |
| 248 |
| 249 var errorThreshold = 0; |
| 250 |
| 251 if (options.errorThreshold) |
| 252 errorThreshold = options.errorThreshold[channelCount - 1] |
| 253 |
| 254 Should(prefix + "distanceModel: " + info + ", left channel", data0,
{ |
| 255 verbose: true |
| 256 }) |
| 257 .beCloseToArray(expected0, errorThreshold); |
| 258 Should(prefix + "distanceModel: " + info + ", right channel", data1,
{ |
| 259 verbose: true |
| 260 }) |
| 261 .beCloseToArray(expected1, errorThreshold); |
| 262 }); |
| 263 } |
| 264 </script> |
| 265 </body> |
| 266 </html> |
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Chromium Code Reviews
Issue 1820403002:
Implement Automations for PannerNode and AutioListener (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master