Unreal Engine 4 Mic Input Snippet from quoteunquotestudio.com

mic_input_ue4.cpp

// Additional includes:
#include "Voice.h"
#include "OnlineSubsystemUtils.h"

// New class member:
TSharedPtr<class IVoiceCapture> voiceCapture;

// Initialisation:
voiceCapture = FVoiceModule::Get().CreateVoiceCapture();
voiceCapture->Start();

// Capturing samples:
uint32 bytesAvailable = 0;
EVoiceCaptureState::Type captureState = voiceCapture->GetCaptureState(bytesAvailable);
if (captureState == EVoiceCaptureState::Ok && bytesAvailable > 0)
{
	uint8 buf[maxBytes];
	memset(buf, 0, maxBytes);
	uint32 readBytes = 0;
	voiceCapture->GetVoiceData(buf, maxBytes, readBytes);

	uint32 samples = readBytes / 2;
	float* sampleBuf = new float[samples];

	int16_t sample;
	for (uint32 i = 0; i < samples; i++)
	{
		sample = (buf[i * 2 + 1] << 8) | buf[i * 2];
		sampleBuf[i] = float(sample) / 32768.0f;
	}

	// Do fun stuff here

	delete[] sampleBuf;
}