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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 @released |
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20 */ |
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21 |
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22 #ifndef STREAMAGENTINFO_H |
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23 #define STREAMAGENTINFO_H |
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24 |
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25 #include <e32base.h> |
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26 |
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27 class CImplementationInformation; |
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28 class CSdpMediaField; |
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29 |
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30 namespace StreamAccess |
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31 { |
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32 |
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33 class CStreamAgentFactory; |
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34 |
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35 /* Stores information regarding a Stream Agent interface plug-in implementation. |
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36 * |
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37 * Registration data from the plug-in's resource file and details about the |
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38 * agents decryption capabilities are contained so that the stream agents credentials |
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39 * can be obtained without the need to instantiate an instantce of it. |
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40 * |
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41 * If an instance of the agent is required, the StreamAgentFactoryL() method provides a |
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42 * handle to it's factory object. |
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43 */ |
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44 class CStreamAgentInfo : public CBase |
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45 { |
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46 public: |
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47 |
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48 /* Constructs a new instance of CStreamAgentInfo and pushs it onto the cleanup stack |
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49 * @param aImplementationInfo Contains regristration information relating to the stream |
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50 * agent interface implementation |
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51 * @return Pointer to the new CStreamAgentInfo object |
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52 */ |
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53 static CStreamAgentInfo* NewLC(const CImplementationInformation& aImplementationInfo); |
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54 |
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55 /* Destructor |
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56 */ |
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57 ~CStreamAgentInfo(); |
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58 |
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59 /* Returns the name of the stream agent plug-in implementation |
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60 * @return Name of the steam agent interface implementation |
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61 */ |
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62 const TDesC& Name() const; |
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63 |
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64 /* Returns the implementation UID of the stream agent plug-in DLL |
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65 * @return Implementation UID of the stream agent plug-in DLL |
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66 */ |
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67 TUid ImplementationUid() const; |
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68 |
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69 /* Determines whether the stream agent is capable of decoding the specified key stream |
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70 * @param aSdpKeyStream Conatins the metadata for SDP key management scheme of the stream |
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71 * @return ETrue if the stream agent recognises the SDP format and is able to |
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72 * decode the key stream |
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73 * @return EFalse if the stream agent fails to recognise the SDP format or is unable to |
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74 * decode the key stream |
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75 */ |
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76 TBool IsKeyStreamSupportedL(const CSdpMediaField& aSdpKeyStream) const; |
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77 |
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78 /* Returns a handle to the stream agents factory. |
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79 * |
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80 * The factory is instantiated once and can then be called many times. This method |
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81 * DOES NOT transfer ownership of the factory to the calling client. |
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82 * |
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83 * @return Reference to the CStreamAgentFactory instance |
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84 */ |
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85 CStreamAgentFactory& StreamAgentFactory() const; |
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86 |
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87 protected: |
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88 |
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89 /* Constructor |
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90 */ |
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91 CStreamAgentInfo(); |
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92 |
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93 /* Second phase of construction for CStreamAgentInfo |
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94 * @param aImplementationInfo Contains registration information relating to the stream |
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95 * agent interface implementation |
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96 */ |
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97 void ConstructL(const CImplementationInformation& aImplementationInfo); |
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98 |
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99 private: |
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100 |
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101 /* Name of the stream agent plug-in implementation |
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102 */ |
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103 HBufC* iName; |
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104 |
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105 /* Implementation UID of the stream agent plug-in DLL |
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106 */ |
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107 TUid iImplementationUid; |
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108 |
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109 /* Stream agent factory handle used to generate instances of the agent key stream decoder |
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110 */ |
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111 CStreamAgentFactory* iStreamAgentFactory; |
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112 |
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113 // ECOM session key. This is set by REComSession::CreateImplementationL() during construction |
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114 TUid iEcomKey; |
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115 }; |
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116 } // namespace StreamAccess |
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117 #endif /*STREAMAGENTINFO_H*/ |