76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "AudioMixer.h"
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#include "DSP/Dsp.h"
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#include <SLES/OpenSLES.h>
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#include "SLES/OpenSLES_Android.h"
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// Any platform defines
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namespace Audio
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{
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class FMixerPlatformAndroid : public IAudioMixerPlatformInterface
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{
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public:
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FMixerPlatformAndroid();
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~FMixerPlatformAndroid();
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//~ Begin IAudioMixerPlatformInterface
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virtual FString GetPlatformApi() const override { return TEXT("OpenSLES"); }
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virtual bool InitializeHardware() override;
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virtual bool TeardownHardware() override;
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virtual bool IsInitialized() const override;
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virtual bool GetNumOutputDevices(uint32& OutNumOutputDevices) override;
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virtual bool GetOutputDeviceInfo(const uint32 InDeviceIndex, FAudioPlatformDeviceInfo& OutInfo) override;
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virtual bool GetDefaultOutputDeviceIndex(uint32& OutDefaultDeviceIndex) const override;
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virtual bool OpenAudioStream(const FAudioMixerOpenStreamParams& Params) override;
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virtual bool CloseAudioStream() override;
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virtual bool StartAudioStream() override;
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virtual bool StopAudioStream() override;
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virtual FAudioPlatformDeviceInfo GetPlatformDeviceInfo() const override;
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virtual void SubmitBuffer(const uint8* Buffer) override;
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virtual FString GetDefaultDeviceName() override;
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virtual FAudioPlatformSettings GetPlatformSettings() const override;
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virtual void SuspendContext() override;
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virtual void ResumeContext() override;
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//~ End IAudioMixerPlatformInterface
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private:
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const TCHAR* GetErrorString(SLresult Result);
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int32 GetDeviceBufferSize(int32 RenderCallbackSize) const;
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SLObjectItf SL_EngineObject;
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SLEngineItf SL_EngineEngine;
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SLObjectItf SL_OutputMixObject;
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SLObjectItf SL_PlayerObject;
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SLPlayItf SL_PlayerPlayInterface;
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SLAndroidSimpleBufferQueueItf SL_PlayerBufferQueue;
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FCriticalSection SuspendedCriticalSection;
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bool bSuspended;
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bool bInitialized;
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bool bInCallback;
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// This buffer is pushed to and popped from in the SubmitBuffer callback.
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// This is required for devices that require frame counts per callback that are not powers of two.
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Audio::TCircularAudioBuffer<int16> CircularOutputBuffer;
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// This is the buffer we pop CircularOutputBuffer into in SubmitBuffer.
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TArray<int16> DeviceBuffer;
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int32 NumSamplesPerRenderCallback;
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int32 NumSamplesPerDeviceCallback;
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static void OpenSLBufferQueueCallback( SLAndroidSimpleBufferQueueItf InQueueInterface, void* pContext );
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};
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}
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