void AudioDestination::render(const blink::WebVector<float*>& sourceData, const blink::WebVector<float*>& audioData, size_t numberOfFrames)
{
    bool isNumberOfChannelsGood = audioData.size() == m_numberOfOutputChannels;
    if (!isNumberOfChannelsGood) {
        ASSERT_NOT_REACHED();
        return;
    }

    bool isBufferSizeGood = numberOfFrames == m_callbackBufferSize;
    if (!isBufferSizeGood) {
        ASSERT_NOT_REACHED();
        return;
    }

    // Buffer optional live input.
    if (sourceData.size() >= 2) {
        // FIXME: handle multi-channel input and don't hard-code to stereo.
        RefPtr<AudioBus> wrapperBus = AudioBus::create(2, numberOfFrames, false);
        wrapperBus->setChannelMemory(0, sourceData[0], numberOfFrames);
        wrapperBus->setChannelMemory(1, sourceData[1], numberOfFrames);
        m_inputFifo->push(wrapperBus.get());
    }

    for (unsigned i = 0; i < m_numberOfOutputChannels; ++i)
        m_renderBus->setChannelMemory(i, audioData[i], numberOfFrames);

    m_fifo->consume(m_renderBus.get(), numberOfFrames);
}
static bool parse(const Dictionary& constraintsDictionary, blink::WebVector<blink::WebMediaConstraint>& optional, blink::WebVector<blink::WebMediaConstraint>& mandatory)
{
    if (constraintsDictionary.isUndefinedOrNull())
        return true;

    Vector<String> names;
    constraintsDictionary.getOwnPropertyNames(names);

    String mandatoryName("mandatory");
    String optionalName("optional");

    for (Vector<String>::iterator it = names.begin(); it != names.end(); ++it) {
        if (*it != mandatoryName && *it != optionalName)
            return false;
    }

    Vector<blink::WebMediaConstraint> mandatoryConstraintsVector;
    if (names.contains(mandatoryName)) {
        Dictionary mandatoryConstraintsDictionary;
        bool ok = constraintsDictionary.get(mandatoryName, mandatoryConstraintsDictionary);
        if (!ok || mandatoryConstraintsDictionary.isUndefinedOrNull())
            return false;

        HashMap<String, String> mandatoryConstraintsHashMap;
        ok = mandatoryConstraintsDictionary.getOwnPropertiesAsStringHashMap(mandatoryConstraintsHashMap);
        if (!ok)
            return false;

        HashMap<String, String>::const_iterator iter = mandatoryConstraintsHashMap.begin();
        for (; iter != mandatoryConstraintsHashMap.end(); ++iter)
            mandatoryConstraintsVector.append(blink::WebMediaConstraint(iter->key, iter->value));
    }

    Vector<blink::WebMediaConstraint> optionalConstraintsVector;
    if (names.contains(optionalName)) {
        ArrayValue optionalConstraints;
        bool ok = constraintsDictionary.get(optionalName, optionalConstraints);
        if (!ok || optionalConstraints.isUndefinedOrNull())
            return false;

        size_t numberOfConstraints;
        ok = optionalConstraints.length(numberOfConstraints);
        if (!ok)
            return false;

        for (size_t i = 0; i < numberOfConstraints; ++i) {
            Dictionary constraint;
            ok = optionalConstraints.get(i, constraint);
            if (!ok || constraint.isUndefinedOrNull())
                return false;
            Vector<String> localNames;
            constraint.getOwnPropertyNames(localNames);
            if (localNames.size() != 1)
                return false;
            String key = localNames[0];
            String value;
            ok = constraint.get(key, value);
            if (!ok)
                return false;
            optionalConstraintsVector.append(blink::WebMediaConstraint(key, value));
        }
    }

    optional.assign(optionalConstraintsVector);
    mandatory.assign(mandatoryConstraintsVector);
    return true;
}
示例#3
0
 virtual void setUint8Array(const char* propertyName, const blink::WebVector<unsigned char>& vector)
 {
     RefPtr<Uint8Array> uint8Array = Uint8Array::create(vector.data(), vector.size());
     m_dictionary.set(propertyName, toV8(uint8Array.get(), m_holder, m_isolate));
 }