appleaacencoder.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 "twitchsdk/broadcast/broadcasttypes.h"
#include <AudioToolbox/AudioToolbox.h>

namespace ttv
{
    namespace broadcast
    {
        class AppleAacEncoder;
        struct AppleAacEncoderInternalData;
        class IFrameWriter;
    }
}

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

    std::unique_ptr<AppleAacEncoderInternalData> mInternalData;
};