audiocapturebase.h

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/********************************************************************************************
* Twitch Broadcasting SDK
*
* This software is supplied under the terms of a license agreement with Twitch Interactive, Inc. and
* may not be copied or used except in accordance with the terms of that agreement
* Copyright (c) 2012-2016 Twitch Interactive, Inc.
*********************************************************************************************/

#pragma once

#include "twitchsdk/broadcast/iaudiocapture.h"

namespace ttv
{
    namespace broadcast
    {
        class AudioCaptureBase;
        class IAudioMixer;
    }
}

class ttv::broadcast::AudioCaptureBase : public IAudioCapture
{
public:
    AudioCaptureBase();

public:
    // IAudioCapture implementation
    virtual void SetAudioMixer(const std::shared_ptr<IAudioMixer>& mixer) override;
    virtual bool GetMuted() const override;
    virtual void SetMuted(bool muted) override;
    virtual void SetAudioLayer(AudioLayerId layer) override;
    virtual AudioLayerId GetAudioLayer() const override;
    virtual void SetInitialTime(uint64_t initialTime) override;

    virtual TTV_ErrorCode Initialize() override;
    virtual TTV_ErrorCode Start() override;
    virtual TTV_ErrorCode Stop() override;
    virtual TTV_ErrorCode Shutdown() override;

    // Helper functions to convert between system time and sample time.
    static uint64_t SamplesToSystemTime(uint64_t samples, uint32_t sampleRate);
    static uint64_t SystemTimeToSamples(uint64_t time, uint32_t sampleRate);

protected:
    std::shared_ptr<IAudioMixer> mAudioMixer;
    AudioLayerId mAudioLayer;
    uint64_t mInitialSysTime;
    bool mMuted;
    bool mInitialized;
    bool mStarted;
};