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1 /* |
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2 * Copyright (c) 2005-2006 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: MccJitterCalculator calculates jitter level and compares given |
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15 * triggers. |
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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 |
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22 #ifndef MCCJITTERCALCULATOR_H |
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23 #define MCCJITTERCALCULATOR_H |
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24 |
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25 // INCLUDES |
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26 #include <mmf/common/mmfcontrollerframework.h> |
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27 #include <mmccinterfacedef.h> |
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28 |
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29 #ifdef FTD_ENABLED |
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30 #include <e32msgqueue.h> |
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31 #include <mccstreamstats.h> |
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32 #include <mccjbufferstats.h> |
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33 #endif |
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34 |
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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 * Observer for jitter calculation event notification |
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40 * |
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41 * @lib MccRtpSourceSink.dll |
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42 * @since Series 60 3.2 |
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43 */ |
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44 class MRtpJitterObserver |
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45 { |
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46 public: |
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47 virtual void SendJitterEvent( TMccRtpEventData aEvent, TInt aError ) = 0; |
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48 }; |
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49 |
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50 |
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51 /** |
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52 * Class which implements jittercalculations for received RTP packets |
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53 * |
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54 * @lib Mccrtpsourcesink.dll |
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55 * @since Series 60 3.0 |
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56 */ |
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57 class CMccJitterCalculator : public CBase |
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58 { |
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59 public: // Constructors and destructor |
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60 |
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61 /** |
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62 * Two-phased constructor. |
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63 */ |
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64 static CMccJitterCalculator* NewL( MRtpJitterObserver& aObserver ); |
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65 |
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66 /** |
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67 * Destructor. |
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68 */ |
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69 virtual ~CMccJitterCalculator( ); |
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70 |
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71 public: // New functions |
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72 |
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73 /** |
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74 * Starts media quality observing |
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75 * @since Series 60 3.0 |
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76 * @return Error code |
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77 */ |
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78 TInt StartObserving(); |
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79 |
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80 /** |
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81 * Cancels media quality observing |
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82 * @since Series 60 3.0 |
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83 * @return void |
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84 */ |
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85 void CancelObserving(); |
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86 |
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87 /** |
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88 * Handles received packets and calculates jitter level |
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89 * @since Series 60 3.0 |
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90 * @param "aHeaderInfo" |
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91 * RTP header from received packet |
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92 * @return void |
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93 */ |
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94 void RtpPacketReceived( const TUint32 aTimeStamp, TBool aMarker ); |
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95 |
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96 /** |
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97 * Set media configurations |
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98 * @since Series 60 3.0 |
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99 * @param "aMessage" |
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100 * message from client |
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101 * @return void |
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102 */ |
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103 void SetMediaConfigsL( const TMMFMessage& aMessage ); |
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104 |
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105 /** |
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106 * Reset local counters |
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107 * @since Series 60 3.0 |
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108 * @return void |
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109 */ |
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110 void ResetCounters( ); |
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111 |
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112 /** |
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113 * Check the observing status |
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114 * @since Series 60 3.0 |
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115 * @return iMediaQualityObservingStarted |
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116 */ |
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117 TBool IsObserving() const; |
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118 |
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119 private: |
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120 /** |
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121 * C++ default constructor. |
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122 */ |
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123 CMccJitterCalculator( MRtpJitterObserver& aObserver ); |
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124 |
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125 /** |
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126 * By default Symbian 2nd phase constructor is private. |
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127 */ |
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128 void ConstructL(); |
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129 |
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130 /** |
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131 * Jitter level observing routines |
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132 * @since Series 60 3.0 |
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133 * @return void |
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134 */ |
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135 void JitterObserving(); |
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136 |
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137 private: |
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138 |
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139 // Number of packets received |
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140 TUint32 iPacketsReceived; |
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141 |
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142 // Current jitter estimate |
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143 TUint64 iCurJitter; |
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144 |
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145 // Holds the previous packet arrival time |
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146 TTime iPrevPacketArrival; |
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147 |
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148 // Holds the previous packets transit time |
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149 TInt64 iPrevPacketTransit; |
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150 |
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151 // Indicates reference jitter level from client |
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152 TUint iJitterLevelFromClient; |
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153 |
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154 // Indicates current report type |
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155 TInt iReportType; |
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156 |
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157 // Indicates report interval type |
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158 TInt iReportIntervalType; |
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159 |
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160 // Indicates report interval |
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161 TInt iReportInterval; |
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162 |
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163 // Flags for indicating jitter level observing state and frame loss rate |
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164 TBool iJitterObsOn; |
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165 TBool iFrameLossObsOn; |
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166 |
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167 // Indicates observing state. Refer to IsObserving-method |
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168 TBool iMediaQualityObservingStarted; |
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169 |
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170 // Indicates interval time |
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171 TTime iIntervalTime; |
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172 |
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173 // Indicates packet loss rate from client |
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174 TInt iPacketLossFromClient; |
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175 |
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176 // Indicates amount of received packets |
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177 TUint32 iReceivedPacketCounter; |
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178 |
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179 // Media config buffer is filled with config data |
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180 TMccMediaQualityConfig iMediaConf; |
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181 |
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182 // Indicates home time |
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183 TTime iHomeTime; |
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184 |
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185 // Indicates current time |
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186 TTime iCurTime; |
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187 |
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188 /** |
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189 * jitter observer |
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190 * Own. |
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191 */ |
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192 MRtpJitterObserver* iObserver; |
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193 |
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194 #ifdef FTD_ENABLED |
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195 |
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196 // Message queue carrying stream statistics |
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197 RMsgQueue<TMccStreamStats> iStreamStatsQueue; |
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198 |
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199 // Message queue carrying jitter buffer statistics |
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200 RMsgQueue<TMccJBufferStats> iJBufStatsQueue; |
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201 |
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202 #endif |
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203 |
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204 #ifdef TEST_EUNIT |
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205 public: |
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206 friend class UT_CMccRtpDataSource; |
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207 friend class UT_CMccJitterCalculator; |
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208 #endif |
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209 }; |
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210 |
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211 #endif // MCCJITTERCALCULATOR_H |
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212 |
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213 // End of File |