PassRefPtr<AudioContext> AudioContext::create(Document* document)
{
ASSERT(document);
ASSERT(isMainThread());
if (s_hardwareContextCount >= MaxHardwareContexts)
return 0;
RefPtr<AudioContext> audioContext(adoptRef(new AudioContext(document)));
audioContext->suspendIfNeeded();
return audioContext.release();
}
PassRefPtr<AudioContext> AudioContext::create(Document& document, ExceptionCode& ec)
{
UNUSED_PARAM(ec);
ASSERT(isMainThread());
if (s_hardwareContextCount >= MaxHardwareContexts)
return nullptr;
RefPtr<AudioContext> audioContext(adoptRef(new AudioContext(document)));
audioContext->suspendIfNeeded();
return audioContext.release();
}
PassRefPtr<AudioContext> AudioContext::createOfflineContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, float 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;
}
RefPtr<AudioContext> audioContext(adoptRef(new AudioContext(document, numberOfChannels, numberOfFrames, sampleRate)));
audioContext->suspendIfNeeded();
return audioContext.release();
}
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();
}