umc_avs_dec_memory_piece.h

audio-video-codecs.rar语音编解码器

/*
//
//              INTEL CORPORATION PROPRIETARY INFORMATION
//  This software is supplied under the terms of a license  agreement or
//  nondisclosure agreement with Intel Corporation and may not be copied
//  or disclosed except in  accordance  with the terms of that agreement.
//    Copyright (c) 2007 Intel Corporation. All Rights Reserved.
//
//
*/

#ifndef __UMC_AVS_DEC_MEMORY_PIECE_H
#define __UMC_AVS_DEC_MEMORY_PIECE_H

#include "ippdefs.h"
#include "ipps.h"
#include "umc_structures.h"

namespace UMC
{

class AVSMemory
{
public:
    // Default constructor
    AVSMemory(void)
    {
        m_pbAllocated = 0;
        m_nAllocated = 0;
        m_nDataSize = 0;
    }
    // Destructor
    ~AVSMemory(void)
    {
        Close();
    }

    // Initialize memory piece
    Status Init(size_t nSize)
    {
        if (nSize > m_nAllocated)
        {
            // release the object before initialization
            Close();

            m_pbAllocated = ippsMalloc_8u(align_value<Ipp32s> (nSize, 4));
            if (NULL == m_pbAllocated)
                return UMC_ERR_ALLOC;
            m_nAllocated = nSize;
        }

        return UMC_OK;
    }

    // Release the object
    Status Close(void)
    {
        if (m_pbAllocated)
            ippsFree(m_pbAllocated);

        m_pbAllocated = 0;
        m_nAllocated = 0;
        m_nDataSize = 0;

        return UMC_OK;
    }

    // Get pointer to the memory
    inline
    Ipp32u *GetBuffer(void)
    {
        return align_pointer<Ipp32u *> (m_pbAllocated, 4);
    }

    // Get the allocated buffer's size
    inline
    size_t GetSize(void)
    {
        return m_nAllocated;
    }

    // Get the valid data size
    inline
    size_t GetDataSize(void)
    {
        return m_nDataSize;
    }

    // Get the valid data size
    inline
    void SetDataSize(size_t dataSize)
    {
        m_nDataSize = dataSize;
    }

protected:
    Ipp8u *m_pbAllocated;                                       // (Ipp8u *) pointer to the allocated buffer
    size_t m_nAllocated;                                        // (size_t) size of the allocated buffer
    size_t m_nDataSize;                                         // (size_t) amount of valid data in dwords
};

} // namespace UMC

#endif // __UMC_AVS_DEC_MEMORY_PIECE_H