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1 /* |
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2 * Copyright (c) 2004 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: SRTP packet class (RTCP) |
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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 |
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21 #ifndef __SRTP_PACKET_RTCP_H__ |
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22 #define __SRTP_PACKET_RTCP_H__ |
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23 |
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24 // INCLUDES |
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25 #include <in_sock.h> |
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26 #include "srtppacket.h" |
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27 |
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28 // FORWARD DECLARATIONS |
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29 class CSRTPCryptoHandler; |
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30 |
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31 /** |
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32 * Contains general RTCP-specific packet routines |
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33 */ |
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34 class CSRTPPacketRTCP : public CSRTPPacket |
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35 { |
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36 public: |
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37 static CSRTPPacketRTCP* NewL(const TDesC8& aPacket, |
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38 CSRTPCryptoHandler& aHandler); |
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39 |
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40 /** |
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41 * Create encrypted packet. |
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42 * @param aEncryptedPayloadPtr encrypted payload to be copied |
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43 * @leave KErrNone if success, system-wide error code otherwise |
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44 * @return HBufC8* encrypted packet |
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45 */ |
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46 HBufC8* CreateEncryptedPacketL(TUint8* aEncryptedPayloadPtr); |
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47 |
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48 /** |
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49 * virtual function for creating decrypted packet. |
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50 * @param aDecryptedPayloadPtr decrypted payload to be copied |
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51 * @leave KErrNone if success, system-wide error code otherwise |
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52 * @return HBufC8* decrypted packet |
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53 * implemented in CSRTPPacketSRTCP. |
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54 */ |
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55 virtual HBufC8* CreateDecryptedPacketL(TUint8* aDecryptedPayloadPtr); |
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56 |
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57 /** |
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58 * virtual function for getting the authentication tag |
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59 * implemented in CSRTPPacketSRTCP. |
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60 */ |
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61 virtual TPtrC8 AuthenticationTag(); |
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62 |
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63 /** |
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64 * virtual function for getting the master key identifier |
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65 * implemented in CSRTPPacketSRTP. |
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66 */ |
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67 virtual TPtrC8 MasterKeyIdentifier(); |
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68 /** |
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69 * Get packet index. |
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70 * @return TUint64 packet index. |
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71 */ |
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72 TUint64 PacketIndex(); |
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73 |
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74 /** |
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75 * Set packet index. |
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76 * @param aPacketIndex new packet index |
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77 * @return void |
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78 */ |
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79 void SetPacketIndex(TUint64 aPacketIndex); |
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80 |
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81 /* |
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82 * Update header length member |
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83 * @leave KErrNone if success, system-wide error code otherwise |
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84 * @return void |
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85 */ |
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86 void UpdateHeaderLengthL(); |
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87 |
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88 protected: //methods |
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89 CSRTPPacketRTCP (const TDesC8& aPacket, |
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90 CSRTPCryptoHandler& aHandler); |
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91 ~CSRTPPacketRTCP(); |
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92 |
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93 /** |
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94 * Update payload length information |
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95 * @return void |
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96 */ |
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97 void UpdatePayloadLength(); |
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98 void ConstructL(); |
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99 |
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100 private: //methods |
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101 |
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102 /** |
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103 * Count size of the encrypted packet |
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104 * @return TUint size of the encrypted packet |
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105 */ |
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106 TUint CountEncryptedPacketSizeL(); |
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107 |
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108 /** |
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109 * Count size of the decrypted packet |
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110 * @return TUint size of the decrypted packet |
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111 */ |
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112 TUint CountDecryptedPacketSize(); |
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113 |
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114 protected: //data |
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115 TUint32 iPacketIndex; // packet index |
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116 }; |
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117 |
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118 #endif // __SRTP_PACKET_RTCP_H__ |
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119 |