1 /*

     2 * Copyright (c) 2004-2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * Class declaration for CBulkOnlyTransportUsbcLdd.

    16 *

    17 */

    18 

    19 

    20 /** 

    21  @file

    22  @internalTechnology

    23 */

    24 

    25 #ifndef TBULKMM_H

    26 #define TBULKMM_H

    27 

    28 // Maximum size for SCSI Read10 Write10 and Verify10 commands

    29 // Windows requests size of 64K whereas MAC requests size of 128K

    30 static const TUint32 KMaxBufSize = 128 * 1024;

    31 

    32 #ifdef MSDC_MULTITHREADED

    33 class TBulkMm

    34 {

    35 public:

    36     TBulkMm();

    37     void GetNextTransferBuffer(TUint aLength, TPtr8& aPtr);

    38     void GetNextTransferBuffer(TPtr8& aPtr);

    39 

    40     TUint MaxTransferSize() const {return KMaxBufSize;}

    41     

    42     TUint8* Buf1();

    43     TUint8* Buf2();

    44 

    45 private:

    46 	TBuf8<KMaxBufSize> iDataBuf1;	// For data transfers (Reading and Writing)

    47 	TBuf8<KMaxBufSize> iDataBuf2;

    48 

    49 	TBool iSwap;

    50 };

    51 

    52 #else

    53 

    54 class TBulkMm

    55 {

    56 public:

    57     TBulkMm() {};

    58 

    59     void GetNextTransferBuffer(TUint aLength, TPtr8& aPtr);

    60     void GetNextTransferBuffer(TPtr8& aPtr);

    61 

    62     TUint MaxTransferSize() const {return KMaxBufSize;}

    63 

    64 private:

    65 	TBuf8<KMaxBufSize> iDataBuf;

    66 };

    67 

    68 #endif

    69 

    70 #ifdef MSDC_MULTITHREADED

    71 inline TUint8* TBulkMm::Buf1()

    72 {

    73     return const_cast<TUint8*>(iDataBuf1.Ptr());

    74 }

    75 

    76 

    77 inline TUint8* TBulkMm::Buf2()

    78 {

    79     return const_cast<TUint8*>(iDataBuf2.Ptr());

    80 }

    81 

    82 

    83 inline void TBulkMm::GetNextTransferBuffer(TPtr8& aPtr)

    84 	{

    85     GetNextTransferBuffer(KMaxBufSize, aPtr);

    86 	}

    87 

    88 #else

    89 inline void TBulkMm::GetNextTransferBuffer(TUint aLength, TPtr8& aPtr)

    90 	{

    91     iDataBuf.SetLength(aLength);

    92     aPtr.Set(iDataBuf.LeftTPtr(iDataBuf.Length()));

    93 	}

    94 

    95 

    96 inline void TBulkMm::GetNextTransferBuffer(TPtr8& aPtr)

    97 	{

    98     GetNextTransferBuffer(KMaxBufSize, aPtr);

    99 	}

   100 #endif

   101 

   102 #endif

   103