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1 // Copyright (c) 2005-2009 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 /** |
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17 @file |
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18 @publishedPartner |
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19 @released |
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20 */ |
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21 |
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22 #ifndef MDFPULOADER_H |
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23 #define MDFPULOADER_H |
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24 |
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25 #include <e32base.h> |
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26 class MMdfInputPort; |
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27 class MMdfOutputPort; |
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28 class CMdfProcessingUnit; |
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29 class MMdfProcessingUnitObserver; |
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30 class TFourCC; |
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31 |
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32 /** |
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33 Utility class used by the HwDevice to load Processing Units. |
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34 */ |
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35 class CMdfPuLoader : public CBase |
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36 { |
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37 public: |
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38 /** |
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39 Constructs an instance of the ECom plugin. |
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40 @param aImplementationUid |
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41 ECom implementation UID. |
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42 @return A pointer to the newly constructed object |
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43 */ |
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44 inline static CMdfPuLoader* NewL(TUid aImplementationUid); |
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45 |
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46 /** |
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47 Loads a Processing Unit using a UID synchronously. |
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48 @param aProcessingUnitObserver |
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49 The observer for the newly loaded Processing Unit. |
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50 @param aImplementationUid |
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51 ECom implementation UID. |
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52 @return A pointer to the newly loaded Processing Unit. |
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53 */ |
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54 virtual CMdfProcessingUnit* LoadProcessingUnitL(const MMdfProcessingUnitObserver& aProcessingUnitObserver, |
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55 TUid aImplementationUid) = 0; |
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56 |
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57 /** |
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58 Loads an audio Processing Unit synchronously. The Processing Unit is |
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59 resolved according to the source and destination data types provided. |
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60 @param aProcessingUnitObserver |
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61 The observer for the newly loaded Processing Unit. |
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62 @param aSrcDataType |
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63 The source data type. |
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64 @param aDestDataType |
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65 The destination data type. |
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66 @return A pointer to the newly loaded Processing Unit. |
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67 */ |
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68 virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, |
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69 TFourCC aSrcDataType, TFourCC aDestDataType) = 0; |
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70 |
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71 |
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72 /** |
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73 Loads a video Processing Unit synchronously. The Processing Unit is |
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74 resolved according to the source and destination data types provided. |
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75 @param aProcessingUnitObserver |
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76 The observer for the newly loaded Processing Unit. |
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77 @param aSrcDataType |
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78 The source data type. |
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79 @param aDestDataType |
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80 The destination data type. |
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81 @param aImplementationType |
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82 The implementation type. Can be audio, video encoding or video decoding. |
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83 @return A pointer to the newly loaded Processing Unit. |
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84 */ |
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85 virtual CMdfProcessingUnit* LoadProcessingUnitL( const MMdfProcessingUnitObserver& aProcessingUnitObserver, |
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86 const TDesC8& aSrcDataType, const TDesC8& aDestDataType, const TUid& aImplementationType) = 0; |
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87 |
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88 |
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89 /** |
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90 Attempts to set-up a tunnel from a given output port to an input port. |
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91 The data flow is from the output port to the input port. This method is synchronous. |
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92 @param aOutputPort |
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93 The output port of the tunnel. |
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94 @param aInputPort |
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95 The input port of the tunnel. |
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96 @return An error code indicating if the function call was successful. KErrNone on success, otherwise |
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97 another of the system-wide error codes. |
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98 */ |
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99 virtual TInt TunnelSetup(MMdfOutputPort& aOutputPort, MMdfInputPort& aInputPort) = 0; |
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100 |
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101 /** |
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102 Unloads a Processing Unit synchronously. |
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103 @param aPu |
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104 The pointer to the Processing Unit to be unloaded. |
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105 */ |
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106 virtual void UnloadProcessingUnit(CMdfProcessingUnit*& aPu) = 0; |
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107 |
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108 /** |
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109 Standard destructor. |
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110 */ |
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111 virtual inline ~CMdfPuLoader(); |
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112 private: |
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113 TUid iDtor_ID_Key; |
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114 }; |
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115 |
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116 #include <mdf/mdfpuloader.inl> |
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117 #endif // MDFPULOADER_H |