ST_AudioIOPlaybackBase.h

// Copyright (c) 2025 Aaron Trotter (ShaderTech). All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "IO/Base/ST_AudioIOBase.h"
#include "Main/ST_AudioProcessingSettings.h"
#include "ST_AudioIOPlaybackBase.generated.h"
 
struct ma_device;
struct ma_decoder;
using ma_uint32 = unsigned int;

UCLASS(BlueprintType, Abstract)
class ST_AUDIOPROCESSING_API UST_AudioIOPlaybackBase : public UST_AudioIOBase
{
    GENERATED_BODY()
 
public:
    bool IsPlaying() const;

    static void MA_PlaybackCallBack(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount);

    FDecoderConfig GetDecoderConfig() const;

    virtual EST_SampleFormat GetAudioFormat() const override;
 
protected:

    virtual void DeinitializeAudioIO() override;

    virtual ma_decoder* GetPlaybackDecoder() const override;

    void SetIsPlaying(bool value);

    ma_device* PlaybackDevice = nullptr;

    ma_decoder* PlaybackDecoder = nullptr;
 
private:
    bool bIsPlaying = false;
};
 
inline bool UST_AudioIOPlaybackBase::IsPlaying() const
{
    return bIsPlaying;
}
 
inline ma_decoder* UST_AudioIOPlaybackBase::GetPlaybackDecoder() const
{
    return PlaybackDecoder;
}
 
inline void UST_AudioIOPlaybackBase::SetIsPlaying(bool value)
{
    bIsPlaying = value;
}
 
inline FDecoderConfig UST_AudioIOPlaybackBase::GetDecoderConfig() const
{
    return FDecoderConfig(CachedAudioIOConfig);
}
 
inline EST_SampleFormat UST_AudioIOPlaybackBase::GetAudioFormat() const
{
    if (PlaybackDevice == nullptr)
    {
        return Super::GetAudioFormat();
    }
    return (EST_SampleFormat)PlaybackDevice->playback.format;
}