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;
}
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));
}