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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** |
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17 @file |
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18 @internalComponent |
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19 */ |
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20 |
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21 #ifndef USBTRANSFERSTRATEGY_H |
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22 #define USBTRANSFERSTRATEGY_H |
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23 |
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24 #include <e32std.h> |
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25 #include <d32usbtransfers.h> |
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26 |
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27 |
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28 NONSHARABLE_CLASS(RUsbTransferStrategy) |
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29 { |
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30 public: |
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31 virtual void Close(); |
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32 |
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33 virtual TInt RegisterTransferDescriptor(RUsbTransferDescriptor& aTransferDesc, TInt aRequiredSize, TUint aStartAlignment, TInt aRequiredMaxPackets) =0; |
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34 virtual void ResetTransferDescriptors() =0; |
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35 virtual TInt InitialiseTransferDescriptors(RUsbInterface& aInterface) =0; |
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36 |
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37 public: // Interrupt transfer descriptor methods |
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38 virtual TPtr8 IntrWritableBuffer(TInt aHandle) =0; |
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39 virtual void IntrSaveData(TInt aHandle, TInt aLength) =0; |
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40 virtual void IntrSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0; |
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41 virtual TPtrC8 IntrBuffer(TInt aHandle) const =0; |
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42 |
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43 public: // Bulk transfer descriptor methods |
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44 virtual TPtr8 BulkWritableBuffer(TInt aHandle) =0; |
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45 virtual void BulkSaveData(TInt aHandle, TInt aLength) =0; |
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46 virtual void BulkSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0; |
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47 virtual TPtrC8 BulkBuffer(TInt aHandle) const =0; |
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48 |
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49 public: // Isochronous transfer descriptor methods |
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50 virtual void IsocReset(TInt aHandle) =0; |
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51 virtual TPacketLengths IsocLengths(TInt aHandle) =0; |
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52 virtual TPacketResults IsocResults(TInt aHandle) =0; |
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53 virtual TInt IsocMaxPacketSize(TInt aHandle) =0; |
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54 virtual TPtr8 IsocWritablePackets(TInt aHandle, TInt aWriteHandle, TInt aNumPacketsRequested, TInt& aMaxNumPacketsAbleToWrite) =0; |
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55 virtual TInt IsocSaveMultiple(TInt aHandle, TInt aWriteHandle, TInt aNumOfPackets) =0; |
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56 virtual TPtrC8 IsocPackets(TInt aHandle, TInt aFirstPacketIndex, TInt aNumPacketsRequested, TInt& aNumPacketsReturned) const =0; |
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57 virtual void IsocReceivePackets(TInt aHandle, TInt aNumOfPackets) =0; |
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58 |
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59 protected: |
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60 void SetTransferHandle(RUsbTransferDescriptor& aTransfer, TInt aHandle) const; |
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61 }; |
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62 |
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63 |
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64 #endif // USBTRANSFERSTRATEGY_H |