lameaudioencoder.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/iaudioencoder.h"

#include <memory>


namespace ttv
{
    namespace broadcast
    {       
        class LameAudioEncoder;
        struct LameAudioEncoderInternalData;
    }
}


class ttv::broadcast::LameAudioEncoder : public IAudioEncoder
{
public:
    LameAudioEncoder();
    virtual ~LameAudioEncoder();

public: // IAudioEncoder
    virtual std::string GetName() const override;
    virtual TTV_ErrorCode SetFrameWriter(const std::shared_ptr<IFrameWriter>& frameWriter) override;
    virtual TTV_ErrorCode GetAudioEncodingFormat(AudioFormat& result) override;
    virtual TTV_ErrorCode Initialize() override;
    virtual TTV_ErrorCode Start(uint32_t streamIndex, const AudioParams& audioParams) override;
    virtual TTV_ErrorCode GetNumInputSamplesPerEncodeFrame(uint32_t& result) override;
    virtual TTV_ErrorCode Stop() override;
    virtual TTV_ErrorCode Shutdown() override;

    virtual TTV_ErrorCode SubmitFrame(const std::shared_ptr<AudioFrame>& audioFrame) override;
    virtual bool SupportsReceiverProtocol(IAudioFrameReceiver::ReceiverTypeId typeId) const override;
    virtual std::shared_ptr<IAudioFrameReceiver> GetReceiverImplementation(IAudioFrameReceiver::ReceiverTypeId typeId) override;

private:
    TTV_ErrorCode SubmitPcmSamples(const int16_t* samples, uint32_t numSamplesPerChannel);
    TTV_ErrorCode FlushAudioData();
    TTV_ErrorCode WritePacket();

private:
    std::unique_ptr<LameAudioEncoderInternalData> mInternalData;
};