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1 // Copyright (c) 1997-2009 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 // Mda\Client\Utility.h |
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15 // maintained for backwards compatibility |
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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 __MDA_CLIENT_UTILITY_H__ |
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21 #define __MDA_CLIENT_UTILITY_H__ |
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22 |
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23 // Standard EPOC32 includes |
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24 #include <e32base.h> |
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25 #include <mda/common/base.h> |
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26 |
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27 /** |
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28 @publishedAll |
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29 @removed |
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30 */ |
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31 enum { |
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32 KDummyMdaServerNotImplemented |
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33 }; |
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34 |
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35 // Maintained for backwards compatibility |
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36 // Some code such as CONE uses constucts such as CMdaServer* iServer = CMdaServer::NewL(); |
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37 |
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38 /** |
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39 @publishedAll |
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40 @deprecated |
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41 |
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42 This class has been deprecated in 7.0s. |
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43 */ |
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44 class MMdaObjectEventListener |
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45 { |
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46 public: |
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47 |
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48 /** |
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49 Handles an event that occurred in the media server. Called by the CMdaServer object that the listener has been added to. |
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50 |
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51 @param aEvent |
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52 A single event that occurred in the media server. |
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53 |
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54 @see CMdaServer::AddListenerL() |
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55 */ |
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56 virtual void MoelEvent(const TMdaEvent& aEvent) =0; |
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57 |
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58 /** |
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59 This function, rather than MoelEvent() is called if the event's ID is EMdaEventMissed. Events are stored when they are |
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60 received and a missed event occurs when there are no spare slots. |
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61 */ |
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62 virtual void MoelEventMissed() =0; |
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63 friend class CMdaServer; |
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64 }; |
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65 |
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66 /** |
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67 @publishedAll |
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68 @deprecated |
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69 |
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70 This class has been deprecated in 7.0s. |
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71 */ |
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72 class CMdaServer : public CBase |
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73 { |
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74 public: |
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75 IMPORT_C static CMdaServer* NewL(); |
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76 IMPORT_C ~CMdaServer(); |
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77 IMPORT_C void AddListenerL(MMdaObjectEventListener& aListener); |
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78 IMPORT_C void RemoveListener(MMdaObjectEventListener& aListener); |
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79 }; |
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80 |
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81 /** |
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82 @publishedAll |
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83 @released |
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84 |
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85 An interface class for handling the change of state of an audio data sample object. |
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86 |
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87 The class is a mixin and is intended to be inherited by the client class which is observing the audio recording or the |
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88 audio conversion operation. The class defines a single function which must be implemented by the inheriting client class. |
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89 |
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90 This class is maintained for binary compatibility with versions prior to 7.0s. |
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91 |
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92 Defined in MMdaObjectStateChangeObserver: |
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93 MoscoStateChangeEvent() |
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94 */ |
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95 class MMdaObjectStateChangeObserver |
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96 { |
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97 public: |
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98 /** |
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99 This method is used to receive the updated state of an audio data sample object. This method must be implemented |
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100 by the inheriting client class. |
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101 |
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102 @param aObject |
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103 The audio data sample object whose state has changed. |
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104 |
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105 @param aPreviousState |
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106 This is the previous state of the audio data sample object before it went into the current state. |
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107 It is expected to be one of the enum values defined in CMdaAudioClipUtility::TState, which defines |
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108 the possible states of an audio data sample. |
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109 |
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110 @param aCurrentState |
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111 This is the current state of the audio data sample object. It is expected to be one of the enum values defined |
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112 in CMdaAudioClipUtility::TState, which defines the possible states of an audio data sample. |
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113 |
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114 @param aErrorCode |
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115 A system wide error code, KErrNone for sucessful completion. KErrInUse, KErrDied or KErrAccessDenied |
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116 may be returned to indicate that the sound device is in use by another higher priority client. |
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117 */ |
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118 virtual void MoscoStateChangeEvent(CBase* aObject, TInt aPreviousState, TInt aCurrentState, TInt aErrorCode)=0; |
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119 }; |
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120 |
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121 #endif |