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1 /* |
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2 * Copyright (c) 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: |
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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 // INCLUDE FILES |
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21 #include "mccvideosinkuser.h" |
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22 #include "mccvideosourcesinklogs.h" |
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23 #include "mccdef.h" |
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24 #include "mccinternaldef.h" |
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25 #include <CXPSPacketSink.h> |
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26 |
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27 // CONSTANTS |
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28 const TUint32 KMccModifyMonitoringShortPeriodMicrosecs = 2000000; |
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29 const TUint32 KMccModifyMonitoringLongPeriodMicrosecs = 10000000; |
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30 const TUint32 KMccMaxDenyPeriodMicrosecs = 1000000; |
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31 const TReal KMccMonitoringShortPeriodTimestampIncreaseFactorDown = 0.6; |
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32 const TReal KMccMonitoringShortPeriodTimestampIncreaseFactorUp = 1.4; |
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33 const TReal KMccMonitoringLongPeriodTimestampIncreaseFactorDown = 0.8; |
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34 const TReal KMccMonitoringLongPeriodTimestampIncreaseFactorUp = 1.2; |
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35 |
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36 const TInt KMccJitterBufferThresholdPacketTime = 20; |
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37 |
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38 // Minimum times for preroll |
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39 const TInt KMccOneMediaMinPreroll = 1000; |
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40 const TInt KMccSeveralMediaMinPreroll = 2000; |
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41 |
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42 // MACROS |
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43 #define MCC_CONVERT_TO_90KHZ_CLOCK( valInMicroSecs ) ( valInMicroSecs / 100 * 9 ) |
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44 |
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45 // --------------------------------------------------------------------------- |
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46 // TMccTimeStampEntry::TMccTimeStampEntry |
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47 // --------------------------------------------------------------------------- |
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48 // |
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49 TMccTimeStampEntry::TMccTimeStampEntry() : |
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50 iTime( 0 ), iSeq( 0 ) |
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51 { |
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52 } |
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53 |
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54 // --------------------------------------------------------------------------- |
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55 // TMccTimeStampEntry::TMccTimeStampEntry |
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56 // --------------------------------------------------------------------------- |
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57 // |
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58 TMccTimeStampEntry::TMccTimeStampEntry( TInt64 aTime, TUint16 aSeq ) : |
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59 iTime( aTime ), iSeq( aSeq ) |
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60 { |
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61 } |
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62 |
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63 // --------------------------------------------------------------------------- |
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64 // CMccVideoSinkUser::NewL |
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65 // --------------------------------------------------------------------------- |
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66 // |
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67 CMccVideoSinkUser* CMccVideoSinkUser::NewL( |
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68 MAsyncEventHandler* aAsyncEventHandler, |
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69 TUid aMediaType, |
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70 TUint aStreamId, |
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71 TReal aFrameRate, |
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72 CXPSPacketSink& aPacketSink ) |
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73 { |
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74 CMccVideoSinkUser* self = |
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75 CMccVideoSinkUser::NewLC( aAsyncEventHandler, |
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76 aMediaType, |
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77 aStreamId, |
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78 aFrameRate, |
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79 aPacketSink ); |
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80 CleanupStack::Pop( self ); |
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81 return self; |
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82 } |
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83 |
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84 // --------------------------------------------------------------------------- |
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85 // CMccVideoSinkUser::NewLC |
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86 // --------------------------------------------------------------------------- |
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87 // |
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88 CMccVideoSinkUser* CMccVideoSinkUser::NewLC( |
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89 MAsyncEventHandler* aAsyncEventHandler, |
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90 TUid aMediaType, |
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91 TUint aStreamId, |
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92 TReal aFrameRate, |
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93 CXPSPacketSink& aPacketSink ) |
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94 { |
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95 CMccVideoSinkUser* self = |
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96 new ( ELeave ) CMccVideoSinkUser( |
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97 aAsyncEventHandler, aMediaType, aStreamId, aFrameRate, aPacketSink ); |
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98 CleanupStack::PushL( self ); |
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99 return self; |
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100 } |
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101 |
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102 // --------------------------------------------------------------------------- |
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103 // CMccVideoSinkUser::~CMccVideoSinkUser |
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104 // --------------------------------------------------------------------------- |
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105 // |
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106 CMccVideoSinkUser::~CMccVideoSinkUser() |
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107 { |
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108 delete iJitterBuf; |
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109 } |
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110 |
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111 // --------------------------------------------------------------------------- |
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112 // CMccVideoSinkUser::CMccVideoSinkUser |
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113 // --------------------------------------------------------------------------- |
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114 // |
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115 CMccVideoSinkUser::CMccVideoSinkUser( |
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116 MAsyncEventHandler* aAsyncEventHandler, |
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117 TUid aMediaType, |
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118 TUint aStreamId, |
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119 TReal aFrameRate, |
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120 CXPSPacketSink& aPacketSink ) : |
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121 iAsyncEventHandler( aAsyncEventHandler ), |
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122 iMediaType( aMediaType ), |
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123 iStreamId( aStreamId ), |
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124 iStartedOnce( EFalse ), |
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125 iFrameRate( aFrameRate ), |
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126 iPacketSink( aPacketSink ), |
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127 iPacketOverflowState( ENormal ), |
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128 iNumTimeStamps( 0 ), |
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129 iAverageTimeStampDifference( 0 ), |
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130 iResetNeeded( EFalse ), |
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131 iModifyMode( EModifyInit ), |
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132 iFirstModifyCheck( 0 ), |
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133 iFirstModifyCheckTimestamp( 0 ), |
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134 iFirstTimestamp( 0 ), |
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135 iAllowFrame( ETrue ), |
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136 iDenyFramesStarted( 0 ), |
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137 iMultipleMediaTypes( EFalse ), |
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138 iPreviousPacketOriginalTimeStamp( KMaxTUint32 ), |
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139 iPreviousPacketModifiedTimeStamp( 0 ), |
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140 iPreviousPacketTime( 0 ), |
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141 iCurrentMonitoringPeriod( KMccModifyMonitoringShortPeriodMicrosecs ), |
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142 iTimestampIncreaseFactorDown( KMccMonitoringShortPeriodTimestampIncreaseFactorDown ), |
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143 iTimestampIncreaseFactorUp( KMccMonitoringShortPeriodTimestampIncreaseFactorUp ) |
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144 { |
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145 } |
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146 |
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147 // --------------------------------------------------------------------------- |
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148 // CMccVideoSinkUser::EnqueueL |
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149 // --------------------------------------------------------------------------- |
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150 // |
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151 CMccVideoJitterBuffer::TMccPacketBufferingStatus CMccVideoSinkUser::EnqueueL( |
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152 const TRtpRecvHeader& aHeaderInfo, const TDesC8& aPayloadData ) |
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153 { |
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154 CMccVideoJitterBuffer::TMccPacketBufferingStatus |
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155 bufferingStatus( CMccVideoJitterBuffer::EPlaying ); |
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156 |
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157 if ( aPayloadData.Length() > GetPayloadSize() ) |
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158 { |
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159 // Too big buffer causes playback to stop at Helix, drop the packet |
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160 // silently |
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161 __V_SOURCESINK_CONTROLL( |
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162 "CMccVideoSinkUser::EnqueueL, Too big packet dropped" ) |
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163 } |
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164 else if ( iJitterBuf ) |
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165 { |
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166 TBool importantPacket = CodecSpecificDataHandling( aPayloadData ); |
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167 bufferingStatus = iJitterBuf->EnqueueL( iStreamId, |
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168 aHeaderInfo, |
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169 aPayloadData, |
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170 importantPacket ); |
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171 } |
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172 else |
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173 { |
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174 TInt err = iPacketSink.Enqueue( iStreamId, aHeaderInfo, aPayloadData ); |
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175 if ( err ) |
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176 { |
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177 CheckErrorL( err ); |
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178 } |
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179 } |
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180 return bufferingStatus; |
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181 } |
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182 |
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183 // --------------------------------------------------------------------------- |
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184 // CMccVideoSinkUser::Set |
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185 // --------------------------------------------------------------------------- |
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186 // |
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187 void CMccVideoSinkUser::Set( |
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188 MAsyncEventHandler* aAsyncEventHandler, |
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189 TUid aMediaType, |
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190 TUint aStreamId ) |
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191 { |
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192 iAsyncEventHandler = aAsyncEventHandler; |
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193 iMediaType = aMediaType; |
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194 iStreamId = aStreamId; |
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195 } |
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196 |
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197 // --------------------------------------------------------------------------- |
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198 // CMccVideoSinkUser::SetFrameRateL |
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199 // --------------------------------------------------------------------------- |
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200 // |
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201 void CMccVideoSinkUser::SetFrameRateL( TReal aFrameRate ) |
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202 { |
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203 if ( aFrameRate != iFrameRate ) |
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204 { |
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205 if ( iJitterBuf ) |
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206 { |
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207 __V_SOURCESINK_CONTROLL( |
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208 "CMccVideoSinkUser::SetFrameRateL, configure jitterbuffer" ) |
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209 |
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210 iJitterBuf->ConfigureL( KMccJitterBufferDefaultLowLimit, |
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211 KMccJitterBufferDefaultHighLimit, |
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212 KMccJitterBufferDefaultPlayThreshold, |
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213 KMccJitterBufferDefaultMaxSize, |
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214 aFrameRate ); |
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215 } |
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216 |
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217 iFrameRate = aFrameRate; |
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218 } |
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219 } |
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220 |
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221 // --------------------------------------------------------------------------- |
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222 // CMccVideoSinkUser::GetPreroll |
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223 // Helix does not restrict min preroll (buffering time) but it is safer to |
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224 // have some restriction as otherwise continuous buffering may occur if |
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225 // Helix side buffering is used. If we are on real time mode, buffering |
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226 // is handled at MCC side (this is indicated with preroll value zero). |
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227 // Especially when two or more media types are used, data may not be received |
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228 // in sync and longer buffering guards against running out of data of certain |
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229 // media type. |
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230 // --------------------------------------------------------------------------- |
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231 // |
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232 TInt CMccVideoSinkUser::GetPreroll() |
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233 { |
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234 TInt preroll = iCodecInfo.iJitterBufThreshold * KMccJitterBufferThresholdPacketTime; |
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235 |
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236 __V_SOURCESINK_CONTROLL_INT1( |
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237 "CMccVideoSinkUser::GetPreroll, preroll before adjust:", preroll ) |
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238 |
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239 if ( iMultipleMediaTypes || preroll > KMccOneMediaMinPreroll ) |
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240 { |
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241 TInt minPreroll = iMultipleMediaTypes ? KMccSeveralMediaMinPreroll : |
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242 KMccOneMediaMinPreroll; |
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243 if ( preroll < minPreroll ) |
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244 { |
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245 preroll = minPreroll; |
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246 } |
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247 } |
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248 else |
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249 { |
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250 // Real time mode enabled as client set jitter buffer threshold |
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251 // value to small enough and only one media type is used. |
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252 preroll = 0; |
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253 } |
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254 |
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255 __V_SOURCESINK_CONTROLL_INT1( |
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256 "CMccVideoSinkUserImpl::GetPreroll, preroll:", preroll ) |
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257 |
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258 return preroll; |
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259 } |
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260 |
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261 // --------------------------------------------------------------------------- |
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262 // CMccVideoSinkUser::GetActualPreroll |
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263 // In case of real-time mode, actual preroll value is defined by jitterbuffer |
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264 // --------------------------------------------------------------------------- |
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265 // |
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266 TInt CMccVideoSinkUser::GetActualPreroll() |
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267 { |
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268 TInt preroll( 0 ); |
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269 if ( iJitterBuf ) |
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270 { |
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271 preroll = iJitterBuf->PlayThresholdInMs(); |
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272 } |
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273 else |
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274 { |
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275 preroll = GetPreroll(); |
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276 } |
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277 |
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278 __V_SOURCESINK_CONTROLL_INT1( "CMccVideoSinkUser::GetActualPreroll, preroll:", |
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279 preroll ) |
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280 |
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281 return preroll; |
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282 } |
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283 |
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284 // --------------------------------------------------------------------------- |
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285 // CMccVideoSinkUser::Play |
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286 // --------------------------------------------------------------------------- |
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287 // |
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288 void CMccVideoSinkUser::Play() |
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289 { |
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290 if ( iJitterBuf ) |
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291 { |
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292 iJitterBuf->Play(); |
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293 } |
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294 } |
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295 |
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296 // --------------------------------------------------------------------------- |
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297 // CMccVideoSinkUser::Pause |
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298 // --------------------------------------------------------------------------- |
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299 // |
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300 void CMccVideoSinkUser::Pause() |
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301 { |
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302 if ( iJitterBuf ) |
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303 { |
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304 iJitterBuf->Pause(); |
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305 } |
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306 } |
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307 |
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308 // --------------------------------------------------------------------------- |
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309 // CMccVideoSinkUser::IsQueueSizeDefined |
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310 // --------------------------------------------------------------------------- |
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311 // |
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312 TBool CMccVideoSinkUser::IsQueueSizeDefined() const |
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313 { |
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314 return ( iCodecInfo.iJitterBufBufferLength > 0 ); |
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315 } |
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316 |
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317 // --------------------------------------------------------------------------- |
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318 // CMccVideoSinkUser::QueueSize |
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319 // --------------------------------------------------------------------------- |
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320 // |
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321 TUint CMccVideoSinkUser::QueueSize() const |
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322 { |
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323 TInt queueSize = |
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324 ( iCodecInfo.iJitterBufBufferLength < KMccMinXPSQueueSize ) ? |
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325 KMccMinXPSQueueSize : iCodecInfo.iJitterBufBufferLength; |
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326 |
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327 return queueSize; |
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328 } |
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329 |
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330 // --------------------------------------------------------------------------- |
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331 // CMccVideoSinkUser::PacketOverflowState |
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332 // --------------------------------------------------------------------------- |
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333 // |
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334 CMccVideoSinkUser::TMccPacketOverflowState |
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335 CMccVideoSinkUser::PacketOverflowState() const |
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336 { |
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337 return iPacketOverflowState; |
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338 } |
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339 |
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340 // --------------------------------------------------------------------------- |
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341 // CMccVideoSinkUser::SetPacketOverflow |
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342 // --------------------------------------------------------------------------- |
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343 // |
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344 void CMccVideoSinkUser::SetPacketOverflow( TMccPacketOverflowState aState ) |
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345 { |
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346 iPacketOverflowState = aState; |
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347 } |
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348 |
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349 // --------------------------------------------------------------------------- |
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350 // CMccVideoSinkUser::AddTimeStamp |
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351 // --------------------------------------------------------------------------- |
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352 // |
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353 void CMccVideoSinkUser::AddTimeStamp( TInt64 aTimeStamp, TUint16 aSeq ) |
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354 { |
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355 if ( iResetNeeded ) |
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356 { |
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357 return; |
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358 } |
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359 |
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360 UpdateFirstTimestamp( aTimeStamp ); |
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361 |
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362 TInt lastTimeStamp = iNumTimeStamps - 1; |
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363 if ( lastTimeStamp >= 0 && iTimeStamps[ lastTimeStamp ].iTime == aTimeStamp ) |
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364 { |
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365 // Do not allow subsequent same timestamps, update sequence number |
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366 iTimeStamps[ lastTimeStamp ].iSeq = aSeq; |
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367 return; |
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368 } |
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369 |
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370 if ( iNumTimeStamps >= KMccTimeStampArraySize ) |
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371 { |
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372 RemoveFirstTimeStamp(); |
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373 } |
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374 |
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375 iNumTimeStamps++; |
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376 TInt lastIndex = iNumTimeStamps - 1; |
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377 iTimeStamps[ lastIndex ].iTime = aTimeStamp; |
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378 iTimeStamps[ lastIndex ].iSeq = aSeq; |
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379 } |
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380 |
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381 // --------------------------------------------------------------------------- |
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382 // CMccVideoSinkUser::RemoveFirstTimeStamp |
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383 // --------------------------------------------------------------------------- |
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384 // |
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385 void CMccVideoSinkUser::RemoveFirstTimeStamp() |
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386 { |
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387 for ( TInt i = 1; i < iNumTimeStamps; i++ ) |
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388 { |
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389 iTimeStamps[ i - 1 ] = iTimeStamps[ i ]; |
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390 } |
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391 if ( iNumTimeStamps > 0 ) |
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392 { |
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393 iNumTimeStamps--; |
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394 } |
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395 } |
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396 |
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397 // --------------------------------------------------------------------------- |
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398 // CMccVideoSinkUser::RemoveAllTimeStamps |
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399 // --------------------------------------------------------------------------- |
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400 // |
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401 void CMccVideoSinkUser::RemoveAllTimeStamps() |
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402 { |
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403 iNumTimeStamps = 0; |
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404 } |
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405 |
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406 // --------------------------------------------------------------------------- |
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407 // CMccVideoSinkUser::NumTimeStamps |
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408 // --------------------------------------------------------------------------- |
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409 // |
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410 TInt CMccVideoSinkUser::NumTimeStamps() const |
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411 { |
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412 return iNumTimeStamps; |
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413 } |
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414 |
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415 // --------------------------------------------------------------------------- |
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416 // CMccVideoSinkUser::Reset |
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417 // --------------------------------------------------------------------------- |
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418 // |
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419 void CMccVideoSinkUser::Reset( TBool aFullReset ) |
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420 { |
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421 __V_SOURCESINK_CONTROLL_INT1( |
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422 "CMccVideoSinkUser::Reset, fullreset:", aFullReset ) |
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423 |
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424 if ( aFullReset ) |
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425 { |
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426 SetPacketOverflow( ENormal ); |
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427 RemoveAllTimeStamps(); |
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428 iAverageTimeStampDifference = 0; |
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429 iResetNeeded = EFalse; |
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430 |
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431 SetModifyingState( EModifyInit ); |
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432 iFirstModifyCheck = 0; |
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433 iFirstModifyCheckTimestamp = 0; |
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434 iFirstTimestamp = 0; |
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435 |
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436 iAllowFrame = ETrue; |
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437 iDenyFramesStarted = TTime( 0 ); |
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438 |
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439 iPreviousPacketOriginalTimeStamp = KMaxTUint32; |
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440 iPreviousPacketModifiedTimeStamp = 0; |
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441 iPreviousPacketTime = TTime( 0 ); |
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442 |
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443 iCurrentMonitoringPeriod = KMccModifyMonitoringShortPeriodMicrosecs; |
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444 |
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445 iTimestampIncreaseFactorDown = |
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446 KMccMonitoringShortPeriodTimestampIncreaseFactorDown; |
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447 iTimestampIncreaseFactorUp = |
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448 KMccMonitoringShortPeriodTimestampIncreaseFactorUp; |
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449 } |
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450 } |
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451 |
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452 // --------------------------------------------------------------------------- |
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453 // CMccVideoSinkUser::CalculateAverageTimeStampDifference |
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454 // --------------------------------------------------------------------------- |
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455 // |
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456 void CMccVideoSinkUser::CalculateAverageTimeStampDifference() |
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457 { |
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458 CheckDenyFramesMaxPeriod(); |
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459 |
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460 // Calculate difference only if there's enough timestamps and average |
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461 // difference has not been yet calculated |
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462 if ( !iResetNeeded && |
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463 !iAverageTimeStampDifference && |
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464 iNumTimeStamps == KMccTimeStampArraySize ) |
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465 { |
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466 TInt lastTimeStamp( iNumTimeStamps - 1 ); |
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467 |
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468 // Calculate first the average timestamp difference between last N packets |
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469 TInt seqNumDif( 0 ); |
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470 for ( TInt i = lastTimeStamp; i > 0; i-- ) |
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471 { |
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472 seqNumDif = iTimeStamps[ i ].iSeq - iTimeStamps[ i - 1 ].iSeq; |
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473 seqNumDif = Abs( seqNumDif ); |
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474 seqNumDif = ( seqNumDif == 0 ) ? 1 : seqNumDif; |
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475 |
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476 iAverageTimeStampDifference += (TUint32)( |
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477 ( iTimeStamps[ i ].iTime - iTimeStamps[ i - 1 ].iTime ) / seqNumDif ); |
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478 } |
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479 |
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480 iAverageTimeStampDifference = |
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481 iAverageTimeStampDifference / ( KMccTimeStampArraySize - 1 ); |
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482 |
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483 __V_SOURCESINK_CONTROLL_INT1( |
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484 "CMccVideoSinkUser::CalculateAverageTimeStampDifference, average dif:", |
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485 iAverageTimeStampDifference ) |
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486 } |
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487 } |
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488 |
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489 // --------------------------------------------------------------------------- |
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490 // CMccVideoSinkUser::IsResetNeeded |
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491 // If there's big gap in timestamps, videoplayer needs to be resetted to |
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492 // succesfully continue playback. If modifying is in use, gaps are ignored. |
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493 // --------------------------------------------------------------------------- |
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494 // |
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495 TBool CMccVideoSinkUser::IsResetNeeded( TRtpRecvHeader& aHeaderInfo ) |
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496 { |
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497 if ( !iResetNeeded ) |
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498 { |
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499 if ( RealTimeUser() ) |
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500 { |
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501 iResetNeeded = IsResetNeededRealTimeMode( aHeaderInfo ); |
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502 } |
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503 else |
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504 { |
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505 iResetNeeded = IsResetNeededNormalMode( aHeaderInfo ); |
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506 } |
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507 } |
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508 return iResetNeeded; |
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509 } |
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510 |
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511 // --------------------------------------------------------------------------- |
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512 // CMccVideoSinkUser::IsResetNeeded |
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513 // --------------------------------------------------------------------------- |
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514 // |
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515 TBool CMccVideoSinkUser::IsResetNeeded() const |
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516 { |
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517 return iResetNeeded; |
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518 } |
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519 |
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520 // --------------------------------------------------------------------------- |
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521 // CMccVideoSinkUser::IsModifyNeeded |
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522 // Check if other end is using video timestamps incorrectly and modify |
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523 // them to be as correct as possible as Helix cannot deal with incorrect |
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524 // timestamps. Modify check is not used in audio+video scenario as packet |
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525 // flow is not as stable in that case. |
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526 // --------------------------------------------------------------------------- |
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527 // |
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528 TBool CMccVideoSinkUser::IsModifyNeeded( TRtpRecvHeader& aHeaderInfo ) |
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529 { |
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530 if ( iMultipleMediaTypes ) |
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531 { |
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532 return EFalse; |
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533 } |
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534 |
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535 if ( iModifyMode == EModifyInit ) |
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536 { |
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537 DoModifyCheckInit( aHeaderInfo ); |
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538 } |
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539 |
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540 if ( MonitoringModify() ) |
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541 { |
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542 DoModifyCheckMonitoring( aHeaderInfo ); |
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543 } |
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544 |
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545 return DoModify( aHeaderInfo ); |
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546 } |
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547 |
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548 // --------------------------------------------------------------------------- |
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549 // CMccVideoSinkUser::SetAllowFrame |
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550 // If some other user has resetted XPS because of timestamp skew, this |
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551 // user cannot pass media until it has also detected timestamp skew. |
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552 // However, there's guard "timer" which stops denial if it takes too long |
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553 // (i.e. timestamp skew didn't occur/was not detected for some reason). |
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554 // This kind of error situtation can cause medias to go out of sync but |
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555 // it is anyway better than not being able to continue playback at all. |
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556 // --------------------------------------------------------------------------- |
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557 // |
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558 void CMccVideoSinkUser::SetAllowFrame( TBool aAllowFrame ) |
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559 { |
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560 __V_SOURCESINK_CONTROLL_INT1( |
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561 "CMccVideoSinkUser::SetAllowFrame, allow:", aAllowFrame ) |
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562 |
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563 iAllowFrame = aAllowFrame; |
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564 |
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565 if ( !iAllowFrame ) |
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566 { |
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567 iDenyFramesStarted.HomeTime(); |
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568 } |
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569 } |
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570 |
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571 // --------------------------------------------------------------------------- |
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572 // CMccVideoSinkUser::AllowFrame |
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573 // --------------------------------------------------------------------------- |
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574 // |
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575 TBool CMccVideoSinkUser::AllowFrame() const |
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576 { |
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577 return iAllowFrame; |
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578 } |
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579 |
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580 // --------------------------------------------------------------------------- |
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581 // CMccVideoSinkUser::SetMultipleMediaTypesL |
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582 // --------------------------------------------------------------------------- |
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583 // |
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584 void CMccVideoSinkUser::SetMultipleMediaTypesL( TBool aMultipleMediaTypes ) |
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585 { |
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586 iMultipleMediaTypes = aMultipleMediaTypes; |
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587 if ( RealTimeUser() && !iJitterBuf ) |
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588 { |
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589 __V_SOURCESINK_CONTROLL( |
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590 "CMccVideoSinkUser::SetMultipleMediaTypesL, creating jitterbuffer" ) |
|
591 |
|
592 iJitterBuf = CMccVideoJitterBuffer::NewL( |
|
593 *this, iPacketSink, iCodecInfo.iJitterBufInactivityTimeOut ); |
|
594 } |
|
595 } |
|
596 |
|
597 // --------------------------------------------------------------------------- |
|
598 // CMccVideoSinkUser::SetCodecInfoL |
|
599 // --------------------------------------------------------------------------- |
|
600 // |
|
601 void CMccVideoSinkUser::SetCodecInfoL( const TMccCodecInfo& aCodecInfo ) |
|
602 { |
|
603 iCodecInfo = aCodecInfo; |
|
604 } |
|
605 |
|
606 // --------------------------------------------------------------------------- |
|
607 // CMccVideoSinkUser::CodecInfo |
|
608 // --------------------------------------------------------------------------- |
|
609 // |
|
610 TMccCodecInfo& CMccVideoSinkUser::CodecInfo() |
|
611 { |
|
612 return iCodecInfo; |
|
613 } |
|
614 |
|
615 // --------------------------------------------------------------------------- |
|
616 // CMccVideoSinkUser::GetPayloadSize |
|
617 // --------------------------------------------------------------------------- |
|
618 // |
|
619 TInt CMccVideoSinkUser::GetPayloadSize() |
|
620 { |
|
621 if ( !iPayloadSize ) |
|
622 { |
|
623 TInt payloadSize( iCodecInfo.iFrameSize ); |
|
624 __V_SOURCESINK_CONTROLL_INT1( |
|
625 "CMccVideoSinkUser::GetPayloadSize, size:", payloadSize ) |
|
626 |
|
627 if ( payloadSize < KMccVideoSinkMinPayloadBufSize ) |
|
628 { |
|
629 payloadSize = KMccVideoSinkMinPayloadBufSize; |
|
630 __V_SOURCESINK_CONTROLL_INT1( |
|
631 "CMccVideoSinkUser::GetPayloadSize, size modified:", payloadSize ) |
|
632 } |
|
633 iPayloadSize = payloadSize; |
|
634 } |
|
635 return iPayloadSize; |
|
636 } |
|
637 |
|
638 // --------------------------------------------------------------------------- |
|
639 // CMccVideoSinkUser::ErrorOccured |
|
640 // --------------------------------------------------------------------------- |
|
641 // |
|
642 void CMccVideoSinkUser::ErrorOccured( TInt aError ) |
|
643 { |
|
644 TRAP_IGNORE( CheckErrorL( aError ) ) |
|
645 } |
|
646 |
|
647 // --------------------------------------------------------------------------- |
|
648 // CMccVideoSinkUser::DoModify |
|
649 // --------------------------------------------------------------------------- |
|
650 // |
|
651 TBool CMccVideoSinkUser::DoModify( TRtpRecvHeader& aHeaderInfo ) |
|
652 { |
|
653 TBool modifyRequired( EFalse ); |
|
654 |
|
655 if ( ModifyRequired() ) |
|
656 { |
|
657 TUint32 timeStamp = aHeaderInfo.iTimestamp; |
|
658 |
|
659 TTime currentTime; |
|
660 currentTime.HomeTime(); |
|
661 |
|
662 if ( timeStamp == iPreviousPacketOriginalTimeStamp ) |
|
663 { |
|
664 // Frame is divided into several packets, packet time of |
|
665 // first packet in the frame is used until frame changes. |
|
666 timeStamp = iPreviousPacketModifiedTimeStamp; |
|
667 currentTime = iPreviousPacketTime; |
|
668 } |
|
669 else if ( iPreviousPacketTime.Int64() != 0 ) |
|
670 { |
|
671 TTimeIntervalMicroSeconds interval = |
|
672 currentTime.MicroSecondsFrom( iPreviousPacketTime ); |
|
673 |
|
674 __V_SOURCESINK_CONTROLL_INT1( |
|
675 "CMccVideoSinkUser diffr:", interval.Int64() ) |
|
676 |
|
677 timeStamp = iPreviousPacketModifiedTimeStamp + |
|
678 MCC_CONVERT_TO_90KHZ_CLOCK( interval.Int64() ); |
|
679 } |
|
680 else |
|
681 { |
|
682 // NOP |
|
683 } |
|
684 |
|
685 __V_SOURCESINK_CONTROLL_INT2( |
|
686 "CMccVideoSinkUser orig:", aHeaderInfo.iTimestamp, |
|
687 " new:", timeStamp ) |
|
688 |
|
689 iPreviousPacketOriginalTimeStamp = aHeaderInfo.iTimestamp; |
|
690 iPreviousPacketModifiedTimeStamp = timeStamp; |
|
691 aHeaderInfo.iTimestamp = timeStamp; |
|
692 iPreviousPacketTime = currentTime; |
|
693 |
|
694 modifyRequired = ETrue; |
|
695 } |
|
696 |
|
697 return modifyRequired; |
|
698 } |
|
699 |
|
700 // --------------------------------------------------------------------------- |
|
701 // CMccVideoSinkUser::SeqNumDifToLastSeqNum |
|
702 // --------------------------------------------------------------------------- |
|
703 // |
|
704 TInt CMccVideoSinkUser::SeqNumDifToLastSeqNum( TUint16 aSeq ) |
|
705 { |
|
706 TInt seqNumDif( 1 ); |
|
707 TInt lastTimeStampIndex( iNumTimeStamps - 1 ); |
|
708 if ( lastTimeStampIndex >= 0 ) |
|
709 { |
|
710 TUint16 lastSeqNum = iTimeStamps[ lastTimeStampIndex ].iSeq; |
|
711 seqNumDif = aSeq - lastSeqNum; |
|
712 } |
|
713 return seqNumDif; |
|
714 } |
|
715 |
|
716 // --------------------------------------------------------------------------- |
|
717 // CMccVideoSinkUser::SetModifyingState |
|
718 // --------------------------------------------------------------------------- |
|
719 // |
|
720 void CMccVideoSinkUser::SetModifyingState( TMccTimeStampModifyMode aModifyMode ) |
|
721 { |
|
722 __V_SOURCESINK_CONTROLL_INT1( |
|
723 "CMccVideoSinkUser::SetModifyingState, state:", aModifyMode ) |
|
724 iModifyMode = aModifyMode; |
|
725 } |
|
726 |
|
727 // --------------------------------------------------------------------------- |
|
728 // CMccVideoSinkUser::MonitoringModify |
|
729 // --------------------------------------------------------------------------- |
|
730 // |
|
731 TBool CMccVideoSinkUser::MonitoringModify() |
|
732 { |
|
733 return ( iModifyMode == EModifyRequiredMonitoring || |
|
734 iModifyMode == EModifyNotRequiredMonitoring ); |
|
735 } |
|
736 |
|
737 // --------------------------------------------------------------------------- |
|
738 // CMccVideoSinkUser::ModifyRequired |
|
739 // --------------------------------------------------------------------------- |
|
740 // |
|
741 TBool CMccVideoSinkUser::ModifyRequired() |
|
742 { |
|
743 return ( iModifyMode == EModifyRequired || |
|
744 iModifyMode == EModifyRequiredMonitoring ); |
|
745 } |
|
746 |
|
747 // --------------------------------------------------------------------------- |
|
748 // CMccVideoSinkUser::DoModifyCheckInit |
|
749 // Check if other end does not use timestamps correctly. |
|
750 // --------------------------------------------------------------------------- |
|
751 // |
|
752 void CMccVideoSinkUser::DoModifyCheckInit( |
|
753 const TRtpRecvHeader& aHeaderInfo ) |
|
754 { |
|
755 TUint32 timeStamp = aHeaderInfo.iTimestamp; |
|
756 |
|
757 TUint32 timeStampDifference = GetTimestampDifferenceToPrevious( timeStamp ); |
|
758 |
|
759 if ( timeStampDifference > 0 ) |
|
760 { |
|
761 const TReal KMccPreferredTimeStampStep = |
|
762 TReal( KMccDefaultVideoFrequency / iFrameRate ); |
|
763 |
|
764 // If timestamp increased less than half of preferred step, |
|
765 // there is something wrong and timestamps need to be modified |
|
766 const TInt KMccTimeStampIncreaseMin = KMccPreferredTimeStampStep / 2; |
|
767 |
|
768 if ( timeStampDifference < KMccTimeStampIncreaseMin ) |
|
769 { |
|
770 __V_SOURCESINK_CONTROLL_INT1( |
|
771 "CMccVideoSinkUser::DoModifyCheckInit, inc, difference:", |
|
772 timeStampDifference ) |
|
773 |
|
774 SetModifyingState( EModifyRequiredMonitoring ); |
|
775 } |
|
776 else |
|
777 { |
|
778 SetModifyingState( EModifyNotRequiredMonitoring ); |
|
779 } |
|
780 } |
|
781 } |
|
782 |
|
783 // --------------------------------------------------------------------------- |
|
784 // CMccVideoSinkUser::DoModifyCheckMonitoring |
|
785 // Monitor certain period of time at the beginning of streaming whether |
|
786 // other end is using timestamp incorrectly. Or stop modifying if it looks |
|
787 // that initial decision to modify timestamps was incorrect (other end is |
|
788 // after all using them correctly). |
|
789 // --------------------------------------------------------------------------- |
|
790 // |
|
791 void CMccVideoSinkUser::DoModifyCheckMonitoring( |
|
792 const TRtpRecvHeader& aHeaderInfo ) |
|
793 { |
|
794 TUint32 timeStamp = aHeaderInfo.iTimestamp; |
|
795 |
|
796 TTime currentTime; |
|
797 currentTime.HomeTime(); |
|
798 |
|
799 if ( iFirstModifyCheck == 0 ) |
|
800 { |
|
801 iFirstModifyCheck.HomeTime(); |
|
802 iFirstModifyCheckTimestamp = timeStamp; |
|
803 return; |
|
804 } |
|
805 |
|
806 TTimeIntervalMicroSeconds timeMonitored = |
|
807 currentTime.MicroSecondsFrom( iFirstModifyCheck ); |
|
808 |
|
809 if ( timeMonitored > iCurrentMonitoringPeriod ) |
|
810 { |
|
811 const TInt KMicrosecsToSecs = 1000000; |
|
812 |
|
813 TInt timestampIncreaseWithinMonitoringPeriod = |
|
814 timeStamp - iFirstModifyCheckTimestamp; |
|
815 |
|
816 TReal idealTimestampIncrease = |
|
817 KMccDefaultVideoFrequency * timeMonitored.Int64() / KMicrosecsToSecs; |
|
818 |
|
819 __V_SOURCESINK_CONTROLL_INT2( |
|
820 "CMccVideoSinkUser::DoModifyCheckMonitoring, period:", |
|
821 timeMonitored.Int64(), |
|
822 "inc:", timestampIncreaseWithinMonitoringPeriod ) |
|
823 |
|
824 __V_SOURCESINK_CONTROLL_REAL( |
|
825 "CMccVideoSinkUser::DoModifyCheckMonitoring, ideal inc:", |
|
826 idealTimestampIncrease ) |
|
827 |
|
828 if ( timestampIncreaseWithinMonitoringPeriod < |
|
829 ( idealTimestampIncrease * iTimestampIncreaseFactorDown ) || |
|
830 timestampIncreaseWithinMonitoringPeriod > |
|
831 ( idealTimestampIncrease * iTimestampIncreaseFactorUp ) ) |
|
832 { |
|
833 // Need to calculate average difference again |
|
834 iAverageTimeStampDifference = 0; |
|
835 iNumTimeStamps = 0; |
|
836 |
|
837 DecideMonitoringContinuation( EModifyRequired ); |
|
838 } |
|
839 else |
|
840 { |
|
841 DecideMonitoringContinuation( EModifyNotRequired ); |
|
842 } |
|
843 } |
|
844 } |
|
845 |
|
846 // --------------------------------------------------------------------------- |
|
847 // CMccVideoSinkUser::GetTimestampDifferenceToPrevious |
|
848 // --------------------------------------------------------------------------- |
|
849 // |
|
850 TUint32 CMccVideoSinkUser::GetTimestampDifferenceToPrevious( |
|
851 TUint32 aCurrentTimestamp ) |
|
852 { |
|
853 TUint32 timeStampDifference( 0 ); |
|
854 TInt lastTimeStampIndex( iNumTimeStamps - 1 ); |
|
855 if ( lastTimeStampIndex >= 0 && |
|
856 aCurrentTimestamp != iTimeStamps[ lastTimeStampIndex ].iTime ) |
|
857 { |
|
858 TUint32 lastTimeStamp = iTimeStamps[ lastTimeStampIndex ].iTime; |
|
859 |
|
860 timeStampDifference = |
|
861 aCurrentTimestamp > lastTimeStamp ? |
|
862 ( aCurrentTimestamp - lastTimeStamp ) : |
|
863 ( lastTimeStamp - aCurrentTimestamp ); |
|
864 } |
|
865 return timeStampDifference; |
|
866 } |
|
867 |
|
868 // --------------------------------------------------------------------------- |
|
869 // CMccVideoSinkUser::UpdateFirstTimestamp |
|
870 // --------------------------------------------------------------------------- |
|
871 // |
|
872 void CMccVideoSinkUser::UpdateFirstTimestamp( TUint32 aTimestamp ) |
|
873 { |
|
874 if ( iFirstTimestamp == 0 ) |
|
875 { |
|
876 iFirstTimestamp = aTimestamp; |
|
877 |
|
878 __V_SOURCESINK_CONTROLL_INT1( |
|
879 "CMccVideoSinkUser::UpdateFirstTimestamp, first timestamp:", |
|
880 iFirstTimestamp ) |
|
881 } |
|
882 } |
|
883 |
|
884 // --------------------------------------------------------------------------- |
|
885 // CMccVideoSinkUser::DifferenceThreshold |
|
886 // If there's some gap in sequence numbers which is not anyhow too big, it |
|
887 // might be that some frames are just dropped by network or sender. |
|
888 // In such case take seq num dif in count for timestamp difference threshold. |
|
889 // With negative seq num, threshold is always more strict. |
|
890 // --------------------------------------------------------------------------- |
|
891 // |
|
892 TUint32 CMccVideoSinkUser::DifferenceThreshold( TInt aSeqNumDif ) const |
|
893 { |
|
894 if ( aSeqNumDif > KMccSeqNumDifferenceThresholdMin && |
|
895 aSeqNumDif < KMccSeqNumDifferenceThresholdMax ) |
|
896 { |
|
897 return iAverageTimeStampDifference * |
|
898 ( aSeqNumDif + KMccTimeStampDifferenceTreshold ); |
|
899 } |
|
900 return iAverageTimeStampDifference * KMccTimeStampDifferenceTreshold; |
|
901 } |
|
902 |
|
903 // --------------------------------------------------------------------------- |
|
904 // CMccVideoSinkUser::CheckDenyFramesMaxPeriod |
|
905 // --------------------------------------------------------------------------- |
|
906 // |
|
907 void CMccVideoSinkUser::CheckDenyFramesMaxPeriod() |
|
908 { |
|
909 if ( iDenyFramesStarted.Int64() > 0 ) |
|
910 { |
|
911 TTime currentTime; |
|
912 currentTime.HomeTime(); |
|
913 |
|
914 TTimeIntervalMicroSeconds denyPeriod = |
|
915 currentTime.MicroSecondsFrom( iDenyFramesStarted ); |
|
916 |
|
917 if ( denyPeriod > KMccMaxDenyPeriodMicrosecs ) |
|
918 { |
|
919 __V_SOURCESINK_CONTROLL( |
|
920 "CMccVideoSinkUser::CheckDenyFramesMaxPeriod, end denial" ) |
|
921 |
|
922 Reset( ETrue ); |
|
923 } |
|
924 } |
|
925 } |
|
926 |
|
927 // --------------------------------------------------------------------------- |
|
928 // CMccVideoSinkUser::DecideMonitoringContinuation |
|
929 // --------------------------------------------------------------------------- |
|
930 // |
|
931 void CMccVideoSinkUser::DecideMonitoringContinuation( |
|
932 TMccTimeStampModifyMode aNextState ) |
|
933 { |
|
934 TMccTimeStampModifyMode decidedNextState( aNextState ); |
|
935 if ( iCurrentMonitoringPeriod == KMccModifyMonitoringShortPeriodMicrosecs ) |
|
936 { |
|
937 // Monitor still for longer period, after longer period of sampling |
|
938 // more strict rules can be used to detect incorrect behavior |
|
939 iCurrentMonitoringPeriod = KMccModifyMonitoringLongPeriodMicrosecs; |
|
940 iTimestampIncreaseFactorDown = |
|
941 KMccMonitoringLongPeriodTimestampIncreaseFactorDown; |
|
942 iTimestampIncreaseFactorUp = |
|
943 KMccMonitoringLongPeriodTimestampIncreaseFactorUp; |
|
944 if ( aNextState == EModifyRequired ) |
|
945 { |
|
946 decidedNextState = EModifyRequiredMonitoring; |
|
947 } |
|
948 else if ( aNextState == EModifyNotRequired ) |
|
949 { |
|
950 decidedNextState = EModifyNotRequiredMonitoring; |
|
951 } |
|
952 else |
|
953 { |
|
954 } |
|
955 } |
|
956 SetModifyingState( decidedNextState ); |
|
957 } |
|
958 |
|
959 // --------------------------------------------------------------------------- |
|
960 // CMccVideoSinkUser::IsResetNeededNormalMode |
|
961 // --------------------------------------------------------------------------- |
|
962 // |
|
963 TBool CMccVideoSinkUser::IsResetNeededNormalMode( |
|
964 TRtpRecvHeader& aHeaderInfo ) |
|
965 { |
|
966 TBool isResetNeeded( EFalse ); |
|
967 TUint32 oldTimeStamp = aHeaderInfo.iTimestamp; |
|
968 |
|
969 if ( !ModifyRequired() && iAverageTimeStampDifference ) |
|
970 { |
|
971 TUint32 timeStamp = aHeaderInfo.iTimestamp; |
|
972 |
|
973 // Check if new timestamp is totally off the charts. |
|
974 |
|
975 TInt lastTimeStamp( iNumTimeStamps - 1 ); |
|
976 |
|
977 TInt seqNumDif = SeqNumDifToLastSeqNum( aHeaderInfo.iSeqNum ); |
|
978 |
|
979 if ( timeStamp > iTimeStamps[ lastTimeStamp ].iTime ) |
|
980 { |
|
981 isResetNeeded = ( timeStamp - iTimeStamps[ lastTimeStamp ].iTime ) > |
|
982 DifferenceThreshold( seqNumDif ); |
|
983 } |
|
984 else |
|
985 { |
|
986 isResetNeeded = ( timeStamp + DifferenceThreshold( seqNumDif ) ) < |
|
987 iTimeStamps[ lastTimeStamp ].iTime; |
|
988 } |
|
989 } |
|
990 |
|
991 if ( isResetNeeded ) |
|
992 { |
|
993 // Rollback changes if resetted |
|
994 aHeaderInfo.iTimestamp = oldTimeStamp; |
|
995 } |
|
996 else |
|
997 { |
|
998 // Return value is not interesting |
|
999 IsModifyNeeded( aHeaderInfo ); |
|
1000 } |
|
1001 |
|
1002 return isResetNeeded; |
|
1003 } |
|
1004 |
|
1005 // --------------------------------------------------------------------------- |
|
1006 // CMccVideoSinkUser::IsResetNeededRealTimeMode |
|
1007 // --------------------------------------------------------------------------- |
|
1008 // |
|
1009 TBool CMccVideoSinkUser::IsResetNeededRealTimeMode( |
|
1010 TRtpRecvHeader& /*aHeaderInfo*/ ) |
|
1011 { |
|
1012 // Reset never needed |
|
1013 return EFalse; |
|
1014 } |
|
1015 |
|
1016 // --------------------------------------------------------------------------- |
|
1017 // CMccVideoSinkUser::RealTimeUser |
|
1018 // --------------------------------------------------------------------------- |
|
1019 // |
|
1020 TBool CMccVideoSinkUser::RealTimeUser() |
|
1021 { |
|
1022 return ( GetPreroll() == 0 ); |
|
1023 } |
|
1024 |
|
1025 // --------------------------------------------------------------------------- |
|
1026 // CMccVideoSinkUser::CheckErrorL |
|
1027 // --------------------------------------------------------------------------- |
|
1028 // |
|
1029 void CMccVideoSinkUser::CheckErrorL( TInt aError ) |
|
1030 { |
|
1031 __V_SOURCESINK_CONTROLL_INT1( "CMccVideoSinkUser::CheckErrorL, error", aError ) |
|
1032 if ( aError == KErrOverflow ) |
|
1033 { |
|
1034 SetPacketOverflow( CMccVideoSinkUser::EOccured ); |
|
1035 |
|
1036 // Overflow is not cosidered as a fatal error as it can be recovered |
|
1037 aError = KErrNone; |
|
1038 } |
|
1039 User::LeaveIfError( aError ); |
|
1040 } |
|
1041 |
|
1042 |
|
1043 // --------------------------------------------------------------------------- |
|
1044 // CMccVideoSinkUser::CodecSpecificDataHandling |
|
1045 // --------------------------------------------------------------------------- |
|
1046 // |
|
1047 TBool CMccVideoSinkUser::CodecSpecificDataHandling( const TDesC8& aPayloadData ) |
|
1048 { |
|
1049 TBool importantData( EFalse ); |
|
1050 if ( MCC_IS_AVC_USER_ENTRY( this ) ) |
|
1051 { |
|
1052 // Avc sprop-parameter-set values are dropped due helix seems to have |
|
1053 // currently some issue with those. |
|
1054 if ( TMccCodecInfo::IsAvcPpsOrSpsData( aPayloadData, ETrue ) ) |
|
1055 { |
|
1056 __V_SOURCESINK_CONTROLL_STR8( |
|
1057 "CMccVideoSinkUser::CodecSpecificDataHandling, data:", aPayloadData ) |
|
1058 importantData = ETrue; |
|
1059 } |
|
1060 } |
|
1061 return importantData; |
|
1062 } |
|
1063 |
|
1064 // End of file |
|
1065 |