MprNullAecConstructor.h

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//  
// Copyright (C) 2006-2007 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2006-2007 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//
// $$

// Author: Dan Petrie <dpetrie AT SIPez DOT com>

#ifndef _MprNullAecConstructor_h_
#define _MprNullAecConstructor_h_

// SYSTEM INCLUDES
// APPLICATION INCLUDES
#include <mp/MpAudioResourceConstructor.h>
#include <mp/MprNullAec.h>
#include <mp/MprAudioFrameBuffer.h>

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS

class MprNullAecConstructor : public MpAudioResourceConstructor
{
/* //////////////////////////// PUBLIC //////////////////////////////////// */
public:

/* ============================ CREATORS ================================== */

    MprNullAecConstructor()
    : MpAudioResourceConstructor(DEFAULT_NULL_AEC_RESOURCE_TYPE,
                                 0, 1, //minInputs, maxInputs,
                                 0, 1) //minOutputs, maxOutputs
    {
    };

    virtual ~MprNullAecConstructor(){};

/* ============================ MANIPULATORS ============================== */

    virtual OsStatus newResource(const UtlString& resourceName,
                                 int maxResourcesToCreate,
                                 int& numResourcesCreated,
                                 MpResource* resourceArray[])
    {
        assert(maxResourcesToCreate >= 2);
        numResourcesCreated = 2;

        UtlString bufferResourceName(resourceName);
        bufferResourceName.append(AEC_OUTPUT_BUFFER_RESOURCE_NAME_SUFFIX);

        MprAudioFrameBuffer* outBufferResource =
                           new MprAudioFrameBuffer(bufferResourceName, 3);
        resourceArray[1] = outBufferResource;
        resourceArray[1]->enable();

        resourceArray[0] = new MprNullAec(resourceName, *outBufferResource);
        resourceArray[0]->disable();

        return(OS_SUCCESS);
    }

/* ============================ ACCESSORS ================================= */

/* ============================ INQUIRY =================================== */

/* //////////////////////////// PROTECTED ///////////////////////////////// */
protected:

/* //////////////////////////// PRIVATE /////////////////////////////////// */
private:

    MprNullAecConstructor(const MprNullAecConstructor& rMprNullAecConstructor);


    MprNullAecConstructor& operator=(const MprNullAecConstructor& rhs);

};

/* ============================ INLINE METHODS ============================ */

#endif  // _MprNullAecConstructor_h_