/*

     File: ACCodec.h 

 Abstract:  Part of CoreAudio Utility Classes  

  Version: 1.0 

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*/

#if !defined(__ACCodec_h__)

#define __ACCodec_h__

//=============================================================================

//  Includes

//=============================================================================

#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)

    #include <AudioUnit/AudioCodec.h>

#else

    #include "AudioCodec.h"

#endif

#include "ComponentBase.h"

//=============================================================================

//  ACCodec

//

//  A totally abstract base class for implementing components that conform to

//  the AudioCodec API.

//=============================================================================

class ACCodec : public ComponentBase

{

//  Construction/Destruction

public:

                    ACCodec(AudioComponentInstance inInstance);

    virtual         ~ACCodec();

#if !CA_USE_AUDIO_PLUGIN_ONLY && !TARGET_OS_IPHONE

    static      OSStatus ComponentEntryDispatch(ComponentParameters *p, ACCodec *This);

#endif

//  Property Management

public:

    virtual void    GetPropertyInfo(AudioCodecPropertyID inPropertyID, UInt32& outSize, Boolean& outWritable) = 0;

    virtual void    GetProperty(AudioCodecPropertyID inPropertyID, UInt32& ioPropertyDataSize, void* outPropertyData) = 0;

    virtual void    SetProperty(AudioCodecPropertyID inPropertyID, UInt32 inPropertyDataSize, const void* inPropertyData) = 0;

//  Data Handling

public:

    virtual void    Initialize(const AudioStreamBasicDescription* inInputFormat, const AudioStreamBasicDescription* inOutputFormat, const void* inMagicCookie, UInt32 inMagicCookieByteSize) = 0;

    virtual void    Uninitialize() = 0;

    virtual void    Reset() = 0;

    virtual void    AppendInputData(const void* inInputData, UInt32& ioInputDataByteSize, UInt32& ioNumberPackets, const AudioStreamPacketDescription* inPacketDescription) = 0;

    virtual void    AppendInputBufferList(const AudioBufferList *ioBufferList, UInt32& ioNumberPackets, const AudioStreamPacketDescription *inPacketDescription, UInt32 *outBytesConsumed) = 0;

    virtual UInt32  ProduceOutputPackets(void* outOutputData, UInt32& ioOutputDataByteSize, UInt32& ioNumberPackets, AudioStreamPacketDescription* outPacketDescription) = 0;

    virtual UInt32  ProduceOutputBufferList(AudioBufferList *ioBufferList, UInt32& ioNumberPackets,  AudioStreamPacketDescription *outPacketDescription) = 0;

//  Component Support

public:

// used internally

    virtual bool    ImplementsFeature(UInt32 feature) const = 0;

};

// when throwing static_cast to OSStatus so the catch will grab the error code correctly

#define CODEC_THROW(err) \

    throw static_cast<OSStatus>(err)

#define CODEC_THROW_IF(cond, err) \

    if(bool(cond)) CODEC_THROW(err);

#endif