AudioCaptureRtAudio.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "AudioCaptureCore.h"
 
#if PLATFORM_MICROSOFT
#include "Windows/WindowsHWrapper.h"
#endif
 
#ifndef WITH_RTAUDIO
#define WITH_RTAUDIO 0
#endif
 
#if WITH_RTAUDIO
THIRD_PARTY_INCLUDES_START
#include "RtAudio.h"
THIRD_PARTY_INCLUDES_END
#endif
 
namespace Audio
{
    class FAudioCaptureRtAudioStream : public IAudioCaptureStream
    {
    public:
        FAudioCaptureRtAudioStream();
 
        virtual bool GetCaptureDeviceInfo(FCaptureDeviceInfo& OutInfo, int32 DeviceIndex) override;
        virtual bool OpenAudioCaptureStream(const FAudioCaptureDeviceParams& InParams, FOnAudioCaptureFunction InOnCapture, uint32 NumFramesDesired) override;
        virtual bool CloseStream() override;
        virtual bool StartStream() override;
        virtual bool StopStream() override;
        virtual bool AbortStream() override;
        virtual bool GetStreamTime(double& OutStreamTime) override;
        virtual int32 GetSampleRate() const override { return SampleRate; }
        virtual bool IsStreamOpen() const override;
        virtual bool IsCapturing() const override;
        virtual void OnAudioCapture(void* InBuffer, uint32 InBufferFrames, double StreamTime, bool bOverflow) override;
        virtual bool GetInputDevicesAvailable(TArray<FCaptureDeviceInfo>& OutDevices) override;
 
    private:
        FOnAudioCaptureFunction OnCapture;
        int32 NumChannels;
        int32 SampleRate;
 
        uint32 GetDefaultInputDevice();
 
#if WITH_RTAUDIO
        RtAudio CaptureDevice;
#endif
    };
}