1 // Copyright (c) 2008-2009 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 "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 #ifndef MOMXILCOMPONENTIFOBSERVER_H |
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17 #define MOMXILCOMPONENTIFOBSERVER_H |
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18 |
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19 #include <e32base.h> |
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20 #include <openmax/il/khronos/v1_x/OMX_Core.h> |
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21 |
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22 class CMMFBuffer; |
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23 |
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24 /** |
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25 OpenMAX component interface observer class. |
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26 This is an internal interface class that encapsulates and represents the OpenMAX callback API as defined by the OpenMAX specification. |
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27 */ |
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28 class MOmxILComponentIfObserver |
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29 { |
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30 public: |
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31 |
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32 /** |
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33 Callback method that returns the buffer that has been filled. |
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34 |
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35 @param aBuffer |
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36 The buffer returned by the OpenMAX component. |
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37 @param aPortIndex |
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38 The OpenMAX component's port index returning the buffer. |
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39 @return |
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40 KErrNone, if successful; otherwise one of the other system-wide error codes. |
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41 */ |
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42 |
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43 virtual TInt FillBufferDone(CMMFBuffer* aBuffer, TInt aPortIndex) = 0; |
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44 |
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45 /** |
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46 Callback method that returns the buffer that has been emptied. |
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47 |
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48 @param aBuffer |
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49 The buffer returned by the OpenMAX component. |
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50 @param aPortIndex |
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51 The OpenMAX component's port index returning the buffer. |
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52 @return |
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53 KErrNone, if successful; otherwise one of the other system-wide error codes. |
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54 */ |
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55 virtual TInt EmptyBufferDone(const CMMFBuffer* aBuffer, TInt aPortIndex) = 0; |
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56 |
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57 /** |
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58 Callback method used by the component to notify the client application of a particular event. |
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59 |
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60 @param aEvent |
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61 Event the component wants to notify the application about. |
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62 @param aData1 |
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63 The first integer event-specific parameter. |
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64 @param aData2 |
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65 The second integer event-specific parameter. |
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66 @param aExtraInfo |
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67 A pointer to additional event-specific data the component wants to send to the application. |
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68 The component owns the memory. |
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69 @return |
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70 KErrNone, if successful; otherwise one of the other system-wide error codes. |
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71 */ |
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72 virtual TInt EventHandler(OMX_EVENTTYPE aEvent, TUint32 aData1, TUint32 aData2, TAny* aExtraInfo) = 0; |
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73 }; |
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74 |
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75 #endif // MOMXILCOMPONENTIFOBSERVER_H |
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76 |
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