PassRefPtr<AudioBuffer> AudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, double sampleRate)
{
if (!isSampleRateRangeGood(sampleRate) || numberOfChannels > 10 || !numberOfFrames)
return 0;
return AudioBuffer::create(numberOfChannels, numberOfFrames, sampleRate);
}
ExceptionOr<Ref<OfflineAudioContext>> OfflineAudioContext::create(ScriptExecutionContext& context, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
{
// FIXME: Add support for workers.
if (!is<Document>(context))
return Exception { NOT_SUPPORTED_ERR };
if (!numberOfChannels || numberOfChannels > 10 || !numberOfFrames || !isSampleRateRangeGood(sampleRate))
return Exception { SYNTAX_ERR };
auto audioContext = adoptRef(*new OfflineAudioContext(downcast<Document>(context), numberOfChannels, numberOfFrames, sampleRate));
audioContext->suspendIfNeeded();
return WTFMove(audioContext);
}
PassRefPtr<AudioContext> AudioContext::createOfflineContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, double sampleRate, ExceptionCode& ec)
{
ASSERT(document);
// FIXME: offline contexts have limitations on supported sample-rates.
// Currently all AudioContexts must have the same sample-rate.
HRTFDatabaseLoader* loader = HRTFDatabaseLoader::loader();
if (numberOfChannels > 10 || !isSampleRateRangeGood(sampleRate) || (loader && loader->databaseSampleRate() != sampleRate)) {
ec = SYNTAX_ERR;
return 0;
}
return adoptRef(new AudioContext(document, numberOfChannels, numberOfFrames, sampleRate));
}
PassRefPtr<OfflineAudioContext> OfflineAudioContext::create(ScriptExecutionContext* context, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionCode& ec)
{
// FIXME: add support for workers.
if (!context || !context->isDocument()) {
ec = NOT_SUPPORTED_ERR;
return 0;
}
Document* document = toDocument(context);
if (numberOfChannels > 10 || !isSampleRateRangeGood(sampleRate)) {
ec = SYNTAX_ERR;
return 0;
}
RefPtr<OfflineAudioContext> audioContext(adoptRef(new OfflineAudioContext(document, numberOfChannels, numberOfFrames, sampleRate)));
audioContext->suspendIfNeeded();
return audioContext.release();
}
