std::tuple<PlatformRef, DeviceRef> getFirstPlatformAndDeviceFor(uint32_t device_type) {
std::vector<PlatformRef> platformList = CL::Platform::get();
for(auto pf : platformList) {
for(auto dev : pf->getDevices()) {
if(dev->getType() == device_type) {
return std::make_tuple(pf, dev);
}
}
}
PlatformRef platform = platformList.front();
DeviceRef device = platform->getDevices().front();
WARN("Could not find platform and device for the given device type: " + Util::StringUtils::toString(device_type)
+ "\nFallback to " + platform->getName() + "/" + device->getName());
return std::make_tuple(platform, device);
}
InputDeviceNodeWebAudio::InputDeviceNodeWebAudio( const DeviceRef &device, const Format &format, const std::shared_ptr<ContextWebAudio> &context ):
InputDeviceNode( device, format ),
mStreamRef( emscripten::val::undefined() ),
mInputStreamAquired( false ),
mMediaStream( emscripten::val::undefined() ),
mAudioContext( context )
{
// initialize stream
auto utils = ci::em::helpers::getAudioHelpers();
std::function<void(emscripten::val e)> cb = [this]( emscripten::val e )->void
{
// save stream reference
mStreamRef = e;
auto ctx = mAudioContext->getRawContext();
// turn stream we aquired into something consumable by the output.
mMediaStream = ctx.call<emscripten::val>( "createMediaStreamSource",mStreamRef );
// signal that we have an input stream.
mInputStreamAquired = true;
};
// get and check device id / name - if it matches default then pass in blank string.
std::string name = device->getName();
if( name == "WebAudioInputDevice" )
{
name = "";
}
// indicate that this is a native node and thus, needs slightly different processing.
//mIsNativeWebNode = true;
// initialize stream - returns emscripten::val object
mStreamRef = utils.call<emscripten::val>( "loadAudioInput",ci::em::helpers::generateCallback( cb ),val( name ) );
}