BREW 中使用内存中的JPEG创建图像,该怎么处理

/*图像的每一帧都以0101 0101 1010 1010为开始的标志*开始标志位后面的一个字节表示帧的长度*然后是帧的内容（主体）*帧内容（主体）后面的一个字节是校验码，由帧长度与 0x00F0 与而获得*/static void HandleRecvData(eMonitor * pMe){    IImage * pIImage = NULL;    IMemAStream * pIStream = NULL;    int nFontHeight = 0;    byte * pFrameBuffer = NULL;        //帧缓冲区    byte * pFrame = NULL;    //帧缓冲区的指针    byte * pBuffer = NULL;    //当前指针位置    int nFrameIndex1;     int nFrameIndex2;    int nParity = 0; //校验位的值    int nFrameLength = 0;        //帧大小         int i = 0; //循环变量    nFontHeight = IDisplay_GetFontMetrics(pMe->a.m_pIShell, AEE_FONT_NORMAL, NULL, NULL);    //建立处理JPEG图片格式的 IImage 接口    if (ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_JPEG, (void **)&pIImage) != SUCCESS)    {        DBGPRINTF("Create IImage fall");        return;    }    //MEMCPY(pBuffer, pData, size);    //建立处理流的 IMenAStream 接口    if (ISHELL_CreateInstance(pMe->a.m_pIShell, AEECLSID_MEMASTREAM, (void **)&pIStream) != SUCCESS)    {        DBGPRINTF("Create IStream fall");        return;    }    //MEMCPY(pMe->m_pbDisplayBuffer, pMe->m_pbRecvBuffer, pMe->m_nRecvSize);    //pBufferCurrent = pMe->m_pbDisplayBuffer;    pBuffer = pMe->m_pbRecvBuffer;    //0101 0101 1010 1010表示一帧图片的开始，后面一个byte表示一帧画面的长度    while (pBuffer != NULL)    {        nFrameIndex1 = * pBuffer;        //nFrameIndex1 = GetHigh8Bits(* pBufferCurrent);        nFrameIndex2 = *(++ pBuffer);        //nFrameIndex2 = GetHigh8Bits(nFrameIndex2);        //DBGPRINTF("Buffer Current: %x", pBufferCurrent);        //if (nFrameIndex1 == 0x55 || nFrameIndex2 == 0xaa )        if ( nFrameIndex2 == 0xaa )        {            ++ pBuffer;            nFrameLength = * pBuffer; //获取帧的长度            //将图片缓冲的大小设置为图片的长度            pFrameBuffer = (byte *)MALLOC(nFrameLength * sizeof(byte));            //从 pBuffer 的后一个位置开始，复制 nFrameLength个byte到pFrameBuffer            pFrame = pBuffer ++;            MEMCPY(pFrameBuffer, pFrame, nFrameLength * sizeof(byte));            pFrame += nFrameLength; //pBuffer 指针后移 nFrameLength 个字节            nParity = * pFrame; //获取校验位            if ((nFrameLength & 0x00F0) == nParity)            {                //校验正确，显示                DBGPRINTF("success to get new frame image, size is %d", nFrameLength);                //格式化数据为存储流                IMEMASTREAM_Set(pIStream, pFrameBuffer, nFrameLength, 0, FALSE);                //把流设置为图片数据                //IIMAGE_SetStream()函数使 IAStream 接口与 IImage 接口对象关联，以使图像数据从文件或套接字流入                IIMAGE_SetStream(pIImage, pIStream);                /*IIMAGE_SetStream(pIImage, pFrameBuffer);*/                IIMAGE_Draw(pIImage, 0, nFontHeight + 10);                IMEMASTREAM_Release(pIStream);                //释放变量                FREEIF(pFrameBuffer);            }            else            {                //丢弃该帧                FREEIF(pFrameBuffer);            }        }        pBuffer ++; //缓冲区指针继续往后移动        i ++;        /*if (i == 31)        {            DBGPRINTF("***%x", pBufferCurrent);            DBGPRINTF("Find times %d", i);            return;        }*/    }    DBGPRINTF("***%x", pBuffer);    DBGPRINTF("Find times %d", i);}