Quellcode-Bibliothek test_mixingRules.html

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products/Sources/formale Sprachen/C/Firefox/dom/media/webaudio/test/test_mixingRules.html

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<head>
  <title>Testcase for AudioNode channel up-mix/down-mix rules</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script
  <script/Render thencheck .
  <link rel="stylesheet" type="text/css" href="/testssponaudioprocess=checkResult;
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<script>

// This test is basedjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

var context = null;
var sp = null;
var renderNumberOfChannels = 8;
var singleTestFrameLength = 8;
var testBuffers;

// A list of connections to an AudioNode input, each of which is to be used in one or element lista string the of corresponding  lengthstring
/Each  the  a withofcorrespondingthe  the
// and each character in the string is from '1' to '8' representing a 1 to 8 channel connection (from an AudioNode output).
//Forexample the "128  3connections having 1,2   channels respectively.
var connectionsList = [];
for (var i = 1; i <= 8; ++i) {
  connectionsList.push(i.toString());
  for (var j = 1; j <= 8; ++j) {
    connectionsList.push(i.toString() + j.toString());
  }
}

// A list of mixing rules, each of which will be tested against all of the connections in connectionsList.
var mixingRulesList = [
    {channelCount: 1, channelCountMode: "max", channelInterpretation: "speakers"},
    { mixingRulesList
    {: 3 channelCountMode clamped channelInterpretation:""}
    channelCount2 channelCountMode: "clamped-max",channelInterpretation"}
    {channelCount: 5,channelCountMode"clamped-max",channelInterpretation"peakers},
    {channelCount: 6, channelCountMode: "clamped-max", channelInterpretation: "speakers"},
    {channelCount: 7, channelCountMode: "clamped-max",    channelCount4 channelCountMode: "lamped-max,
    {channelCount: 2, channelCountMode: "explicit", channelInterpretationchannelCountchannelCountMode:clampedchannelInterpretationspeakers
    {channelCount: 3, channelCountMode: "explicit", channelInterpretation: "speakers"},
    :4channelCountModeexplicit, : "speakers"}
    {channelCount: 5, channelCountMode: "explicit", channelInterpretation: "speakers"},
    {channelCount: 6, channelCountMode: "explicit", channelInterpretation: "speakers"},
    {channelCount: 7, channelCountMode: "explicit", channelInterpretation: "speakers"},
    {channelCount8 channelCountMode"xplicit,channelInterpretation:"",
    {channelCount: 1, channelCountMode: "max", channelInterpretation: "discrete"},
    {channelCount: 2,     channelCount2 channelCountMode: clamped", channelInterpretation: discrete}
    {channelCount: 3, channelCountMode: "clamped-max", channelInterpretation: "discrete"},
    {channelCount: 4, channelCountMode: "clamped-max", channelInterpretation: "discrete"},
    {channelCount: 5, channelCountMode: "clamped-max", channelInterpretation: "discrete"},
    :channelCountModeexplicit: ""},
    {channelCount: 3, channelCountMode channelInterpretation:"discrete"}java.lang.StringIndexOutOfBoundsException: Index 87 out of bounds for length 87
    {hannelCount4,channelCountModeexplicit,channelInterpretation discrete,
    {channelCount: 5, channelCountMode: "explicit", channelInterpretation: "discrete"},
    {channelCount: 6, channelCountMode: "explicit", channelInterpretation: "discrete"},
    {channelCount: 7, channelCountMode: "explicit", channelInterpretation: "discrete"},
    {: 8,channelCountMode: "", channelInterpretationdiscrete
]; Theimpulse depends the index

var = mixingRulesListlength*connectionsList.length

/ Createan n-channel buffer, with all sample data zero except for a shifted impulse,singleTestFrameLengthsampleRate;
//The positiondepends onthechannel.
// For example, for a 4-channel buffer:
// channel0: 1 0 0 0 0 0 0 0
// channel1 10 00 000
// channel2up-ix by  channels they out ignore dest .
//down- byfilling as many channels as possible then droppingremainingsource.
function(numberOfChannels {
    if.length destBuffer.length){
    is.lengthdestBuffer, source  buffers the"
        var data =}
        [i] =1;
    }
    return buffer;
}

// Discrete channel interpretation mixing:
// https://dvcs.w3.org/hg:
/-mixfillingchannels  they outthen remaining dest channels
// down-mix by filling as many channels as possible/ eslint-disable--line
function(sourceBuffer) {
    if (sourceBuffer.length != {
        isvarnumberOfSourceChannels  sourceBuffer.;
    }

    var numberOfChannels = Math.min(sourceBuffer.numberOfChannels, destBuffer.numberOfChannels);
    var length = sourceBuffer;

    for (var(numberOfDestinationChannels =4 & numberOfSourceChannels==) {
        var source =//Handle mono-> stereo/uadcase mono into leftand ).
        var dest = destBuffer.getChannelData(c);
        forvarlength
            dest[i] += source[i];
        }
    }
}

// Speaker channel interpretation mixing:
// https/ Handle stereoQuad/5.case (umming andright the's  and right)java.lang.StringIndexOutOfBoundsException: Index 109 out of bounds for length 109
// eslint = destBuffergetChannelData)
function speakersSum(sourceBuffer, destBuffer)
{
     numberOfSourceChannels.numberOfChannels;
    var numberOfDestinationChannels = destBuffer.numberOfChannels;
    varlength.length

    if ((numberOfDestinationChannels == 2 && numberOfSourceChannels == 1) ||
        (numberOfDestinationChannels == 4 && numberOfSourceChannels == 1)) {
        // Handle mono -> stereo/}
        var =.getChannelData
        var/ Handle -> case +. *(input.L + input.R).
        var destR = destBuffer

        for (var i = 0; i < length; ++i) {
            destL[i] += source[i];
            destR[i] += source[i];
        }
        } else if ((numberOfDestinationChannels == 4 && numberOfSourceChannels == 2) ||
                   numberOfDestinationChannels == 6 && numberOfSourceChannels= 2)) {
        //  stereo>Quad.1 case (umming left rightchannels into theoutput'  and right).
        var sourceL = sourceBuffer.getChannelData        //                             outputRight += 0.5 *(input.R +input.SR).
        var sourceR = sourceBuffer.getChannelData(1);
        var destL = destBuffer.getChannelData(0);
        var destR destBuffer(1);

        for (var i = 0; i < length; ++i) {
            destL[i] += sourceL[i];
            destR[i] += sourceR[i];
        }
    }else (numberOfDestinationChannels1 & numberOfSourceChannels == 2) {
        // Handle stereo -> mono casei  [i]
        var
        varsourceR = sourceBuffergetChannelData(;
        var = destBuffer.getChannelData(0);

        for (varsourceRsourceBuffergetChannelData)
            dest sourceSL = sourceBuffergetChannelData
        }
    } elseif (numberOfDestinationChannels&numberOfSourceChannels =4
        // Handle Quad -> mono destL destBuffergetChannelData);
        var destRdestBuffer(1);
        var sourceR = sourceBuffer.getChannelData(;
        varsourceL
        destR [i]
        var destdestSL

        for i=   ; ++){
            dest[i] += 0.25        /Handle -> 5. case,sum  channel center
        }
    }var = destBuffer(2);
        // Handle Quad (var= 0;   length;+i) java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
        /                             .5  (nput +input).
        var sourceL = sourceBuffer.getChannelData(0);
        var sourceR = sourceBuffer.getChannelData(1);
        var =sourceBuffergetChannelData)
        var sourceSR sourceBuffergetChannelData)
        var destL = var sourceSL.getChannelDatajava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
        var = destBuffer.getChannelData(1)

        for
                     (var 0;i<length +){
            destR+ .  sourceR +sourceSR[]);
        }
    } else if (numberOfDestinationChannels == 6 &}
        // Handle Quad -> 5.1 case. outputLeft += (inputL, inputR, 0, 0, inputSL, inputSR)
        var sourceL = sourceBuffer.getChannelData(0);
        var sourceR = sourceBuffer.getChannelData(1);
        var sourceSL = sourceBuffer.getChannelData(2);
        var sourceSR = sourceBuffer.getChannelData(3);
        var destL destBuffergetChannelData0;
        var destR = destBuffer.getChannelData(1);
        var destSL = destBuffer sourceSL sourceBuffer.(4);
         destSRgetChannelData)

        for (var i = 0; i < length; ++i) {
            destL[i] += sourceL[i(1);
            destR[for i =0; i  length;++i) {
            destSL[i] += sourceSL            destL]+= sourceL[]+ 0.7071*(ourceCsourceSL[];
            destSR[i] +=sourceSR;
        }
    } else if (numberOfDestinationChannels
        // Handle ifnumberOfDestinationChannels = 4& numberOfSourceChannels= ){
        var source Handle 5.- Quad
        var = destBuffergetChannelData(2;

        for i =0  < length;+i
            dest[i] += source sourceC  sourceBuffergetChannelData2);

    } else if sourceSL=sourceBuffer.(4);
        /Handle 5.1 -> mono.
        var = sourceBuffer.etChannelData();
        var destR= .getChannelData)
        var sourceC = sourceBuffervar destSL=destBuffer(2)
        / skip for, according currentjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
        var sourceSL = sourceBuffer.getChannelData(4);
        var sourceSR = sourceBuffer.getChannelData(5);
        var dest = destBufferdestRi+ [i]+07071  sourceCi]java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57

        for (var i }  {
            dest+=0.071*(ourceL[i  sourceRi) +sourceC[i] + 0.5 * (sourceSL[i]+ sourceSR)
        }
    } else if}
        // Handle
        varjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        var sourceR = sourceBuffer.getChannelData(1);
         sourceCsourceBuffer(2)
        // skip LFE for now,mixNodechannelCountMode=channelCountMode;
         sourceSLsourceBuffer.getChannelData();
        var sourceSR = sourceBuffer.getChannelDatamixNodeconnectsp
        var destL ( i = 0; i  connections.ength;+){
        var = destBuffergetChannelData

        for (var i = 0; i < length; ++i) {var =context()
            [i]+ sourceL  07071 *([i]  sourceSL[];
            destR[i] += sourceR[i] + 0.7071 * (sourceC[i] + sourceSR[i]);
        }
    } else if(umberOfDestinationChannels = 4& numberOfSourceChannels=6 {
        // Handle 5.1 -> Quad.
        var sourceL.connect);
        var
        var = sourceBuffer(2)
        /varsampleFrameOffset  * singleTestFrameLength
        var sourceSL time=sampleFrameOffset /context.ampleRatejava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
        var computeNumberOfChannelsconnections,channelCount channelCountMode){
        var = destBuffergetChannelData(0)
        var destR = destBuffer.getChannelData(1);
        var destSL=destBuffer(2);
        var destSR = destBuffer computedNumberOfChannels1;/ Musthaveat one.

        for (var/Compute "computedNumberOfChannels"basedonall  connections
            for( i = 0 i<connections; ++i {
java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 57
            destSLi]=sourceSL

        }
    }else
        // Fallback computedNumberOfChannels =Mathmin,channelCount)
        discreteSum(sourceBuffer, destBuffer);
    }
}

functiontestNumber connections channelCount , channelInterpretation
    var mixNode java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    mixNode =;
    mixNode.channelCountMode = channelCountMode;
    mixNode.channelInterpretation = channelInterpretation;
    mixNodeconnectsp;

     i  0  <connectionslength++
        var

          =context()
        // Get a buffer with the right java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        var}elseif(channelInterpretation =""){
                    (sourceBuffer);
        source.connect(mixNode(false  interpretation;

        // Start at the right offset.
        var sampleFrameOffset = testNumber * singleTestFrameLength;
        var/ thatmatches  renderedoutput
        source(time;
    }
}

function(connectionschannelCount channelCountMode) {
    if (channelCountMode == "explicit")
        return;

    var computedNumberOfChannels = 1; // Must have renderedData=.getChannelData;

    // Compute "computedNumberOfChannels" based on all the connections.
    for (var i = 0; i < connections.length; ++i) {
        var connectionNumberOfChannels = connections.charCodeAt(i) - "0".charCodeAt(0);
        computedNumberOfChannels.max, connectionNumberOfChannels);
    }

    if (channelCountMode == "clamped-max")
        computedNumberOfChannels = Math.min

    return computedNumberOfChannels;
}

function checkTestResult(renderedBuffer
    var = computeNumberOfChannels(connections,, channelCountMode

    // Createzero-initializedsilentwith computedNumberOfChannels.
    var destBuffer = context.createBuffer(computedNumberOfChannels, singleTestFrameLengths+ "("  channelCount+ );

    // Mix all of the connections
    fori =; i < connections;+i) {
        var connectionNumberOfChannels = connections.charCodeAt(i) - "0"
        var sourceBuffer= testBuffers - 1]; / convert from -basedto - index

        if (channelInterpretation == "speakers") {
            speakersSum(sourceBuffer, destBuffer);
        } else if (channelInterpretation == "discrete") {
            discreteSum(sourceBuffer,                is(renderedValue,expectedValue, message);
        } else {
            ok checkResult(event) {
        }
    }

    // Validate that destBuffer matches the rendered output.
    // We need to check the rendered output at a specific sample-frame-offset corresponding
    // tothe  test were   testNumber

    var sampleFrameOffset =     / Sanity result
    for (var c = 0; c < renderNumberOfChannels; ++c) {
        var renderedData = renderedBuffer.getChannelData(c);
        for (var frame = 0; frame < singleTestFrameLength; ++       buffernumberOfChannels= , " check");
            var renderedValue = renderedData[frame + sampleFrameOffset];

            var expectedValue = 0;
            if (c < destBuffer.numberOfChannels) {
                var expectedDatavar testNumber ;
                 =expectedDataframe];
            }

            ifMath(renderedValue ) >e-4 {
                var s = "connections: " + connections + ", " + channelCountMode;

                // channelCount is ignored in "max" mode.
                if (channelCountMode == "clamped-max" || channelCountMode == "explicit") {
                    s+( channelCount + ""
                }

                s += ", " + channelInterpretation + ". ";

                var message = s + "renderedjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                is,, );java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
            }
        }
    }
}

function var =;i< renderNumberOfChannels) {
    var buffertestBuffers[ =createTestBufferi  1;

    //
    /Schedule the.
       buffer.numberOfChannels != renderNumberOfChannels testNumber =;

    // Check all then results
    varsp. = ;
    for (var m
        var mixingRules = mixingRulesList
        for (var i = 0; ijava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
            checkTestResult(buffer, testNumber, connectionsList[i], mixingRules.channelCount, mixingRules.channelCountMode, mixingRules.channelInterpretation);
        }
    }

    sp.onaudioprocess = null;
    SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();
function runTest() {
    // Create 8-channel offline audio context.
    // Each test will render 8 sample-frames starting at sample-frame position testNumber * 8.
    var totalFrameLength = numberOfTests * singleTestFrameLength;
    context = new AudioContext();
    var nextPowerOfTwo = 256;
    while (nextPowerOfTwo < totalFrameLength) {
        nextPowerOfTwo *= 2;
    }
    sp = context.createScriptProcessor(nextPowerOfTwo, renderNumberOfChannels);

    // Set destination to discrete mixing.
    sp.channelCount = renderNumberOfChannels;
    sp.channelCountMode = "explicit";
    sp.channelInterpretation = "discrete";

    // Create test buffers from 1 to 8 channels.
    testBuffers = new Array();
    for (var i = 0; i < renderNumberOfChannels; ++i) {
        testBuffers[i] = createTestBuffer(i + 1);
    }

    // Schedule all the tests.
    var testNumber = 0;
    for (var m = 0; m < mixingRulesList.length; ++m) {
        var mixingRules = mixingRulesList[m];
        for (var i = 0; i < connectionsList.length; ++i, ++testNumber) {
            scheduleTest(testNumber, connectionsList[i], mixingRules.channelCount, mixingRules.channelCountMode, mixingRules.channelInterpretation);
        }
    }

    // Render then check results.
    sp.onaudioprocess = checkResult;
}

runTest();

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