50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "AudioMixerWasapiRenderStream.h"
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DECLARE_DELEGATE(FAudioMixerReadNextBufferDelegate);
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namespace Audio
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{
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/**
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* FWasapiDefaultRenderStream
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* The default channel output stream. This is the first eight channels
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* which are reserved for the main outputs of the editor/game.
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*/
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class FWasapiDefaultRenderStream : public FAudioMixerWasapiRenderStream
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{
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public:
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virtual ~FWasapiDefaultRenderStream() = default;
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//~ Begin FAudioMixerWasapiRenderStream
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virtual bool InitializeHardware(const FWasapiRenderStreamParams& InParams) override;
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virtual bool TeardownHardware() override;
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virtual void SubmitBuffer(const uint8* Buffer, const SIZE_T InNumFrames) override;
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//~ End FAudioMixerWasapiRenderStream
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//~ Begin IDeviceRenderCallback
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virtual void DeviceRenderCallback() override;
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//~ End IDeviceRenderCallback
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FAudioMixerReadNextBufferDelegate& OnReadNextBuffer() { return ReadNextBufferDelegate; }
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private:
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/** Number of frames to write every Wasapi period (must be at least the minimum required for current driver) */
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int32 EngineBufferNumFrames = 0;
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/** Number of bytes per partial buffer where a partial buffer is used when the engine buffer size
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* is less than the Wasapi drivers buffer size. */
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SIZE_T EngineBufferNumBytes = 0;
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/** Delegate called each buffer callback to signal the mixer to process the next buffer. */
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FAudioMixerReadNextBufferDelegate ReadNextBufferDelegate;
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/** Pointer to WASAPI render audio buffer filled in each callback by the mixer in SubmitBuffer(). */
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TArrayView<uint8> RenderBufferView;
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};
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}
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