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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 #ifndef MCCVIDEOSOURCEKEYRETRIEVER_H |
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21 #define MCCVIDEOSOURCEKEYRETRIEVER_H |
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22 |
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23 // INCLUDES |
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24 #include <e32base.h> |
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25 #include <mmf/server/mmfdatasink.h> |
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26 #include "mmccevents.h" |
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27 #include "mcccamerahandler.h" |
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28 |
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29 // FORWARD DECLARATIONS |
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30 class CMccVideoSourceImpl; |
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31 class CMccPeriodicRunner; |
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32 |
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33 // CONSTANTS |
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34 const TInt KMccKeyRetrieveGuardTimeoutMicrosecs = 10000000; // 10 secs |
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35 |
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36 // CLASS DECLARATION |
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37 |
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38 /** |
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39 * Class used to fecth encoder configuration information. |
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40 * It wraps long taking asynchronous calls behind one sync function call. |
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41 * Operation has guard timer if fetching takes too long. |
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42 * |
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43 */ |
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44 class CMccVideoSourceConfigKeyRetriever : |
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45 public CBase, public MDataSink, public MAsyncEventHandler |
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46 { |
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47 public: |
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48 |
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49 static CMccVideoSourceConfigKeyRetriever* NewLC( MMccCameraHandler& aCameraHandler ); |
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50 |
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51 ~CMccVideoSourceConfigKeyRetriever(); |
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52 |
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53 /** |
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54 * Fetch config info. If operation takes too long, it is interrupted |
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55 * and key retrieval fails |
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56 */ |
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57 void RetrieveL( const TMccCodecInfo& aVideoCodec, TDes8& aConfigKey ); |
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58 |
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59 public: // From MDataSink |
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60 |
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61 TFourCC SinkDataTypeCode( TMediaId aMediaId ); |
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62 |
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63 void EmptyBufferL( CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId ); |
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64 |
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65 void BufferFilledL( CMMFBuffer* aBuffer ); |
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66 |
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67 TBool CanCreateSinkBuffer(); |
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68 |
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69 CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId, TBool &aReference ); |
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70 |
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71 void ConstructSinkL( const TDesC8& aInitData ); |
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72 |
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73 public: // From MAsyncEventHandler |
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74 |
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75 TInt SendEventToClient( const TMMFEvent& aEvent ); |
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76 |
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77 private: |
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78 |
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79 void ConstructL(); |
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80 |
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81 CMccVideoSourceConfigKeyRetriever( MMccCameraHandler& aCameraHandler ); |
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82 |
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83 void HandleEventL( TMccEvent& aEvent ); |
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84 |
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85 void HandleError(); |
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86 |
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87 void StopWaiting(); |
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88 |
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89 void StartGuardTimer(); |
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90 |
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91 void StopGuardTimer(); |
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92 |
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93 static TInt GuardTimerExpired( TAny* aObject ); |
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94 |
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95 private: |
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96 |
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97 MMccCameraHandler& iCameraHandler; |
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98 |
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99 CActiveSchedulerWait* iWait; |
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100 |
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101 CMccVideoSourceImpl* iSource; |
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102 |
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103 CMMFDataBuffer* iBuffer; |
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104 |
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105 TBool iFailed; |
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106 |
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107 CMccPeriodicRunner* iGuardTimer; |
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108 |
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109 TInt iGuardTimerTimeout; |
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110 |
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111 #ifdef TEST_EUNIT |
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112 friend class UT_CMccVideoSourceImpl; |
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113 friend class UT_CMccVideoSourceKeyRetriever; |
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114 #endif |
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115 |
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116 }; |
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117 |
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118 |
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119 #endif |
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120 |
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121 |
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122 // End of file |
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123 |