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1 /* |
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2 * Copyright (c) 2007 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 the License "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: Hold rtp packets waiting to be sent* |
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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 "CCRPacketBuffer.h" |
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22 #include <e32cmn.h> |
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23 #include "videoserviceutilsLogger.h" |
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24 |
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25 // CONSTANTS |
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26 // None. |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CCRPacketBuffer::NewL |
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32 // Two-phased constructor. |
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33 // ----------------------------------------------------------------------------- |
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34 // |
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35 CCRPacketBuffer* CCRPacketBuffer::NewL( const TInt aMaxPackets ) |
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36 { |
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37 CCRPacketBuffer* self = new( ELeave ) CCRPacketBuffer( aMaxPackets ); |
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38 CleanupStack::PushL( self ); |
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39 self->ConstructL(); |
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40 CleanupStack::Pop( self ); |
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41 return self; |
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42 } |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // CCRPacketBuffer::CCRPacketBuffer |
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46 // C++ default constructor can NOT contain any code, that might leave. |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 CCRPacketBuffer::CCRPacketBuffer( const TInt aMaxPackets ) |
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50 : iMaxPackets( aMaxPackets ), |
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51 iContinousStream( EFalse ), |
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52 iMoreComing( EFalse ) |
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53 { |
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54 // None |
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55 } |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // CCRPacketBuffer::ConstructL |
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59 // Symbian 2nd phase constructor can leave. |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 void CCRPacketBuffer::ConstructL() |
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63 { |
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64 // None |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CCRPacketBuffer::~CCRPacketBuffer |
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69 // Destructor. |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CCRPacketBuffer::~CCRPacketBuffer() |
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73 { |
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74 LOG( "CCRPacketBuffer::~CCRPacketBuffer" ); |
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75 |
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76 iBuffer.ResetAndDestroy(); |
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77 iBookKeeping.Close(); |
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78 iSinkArray.Close(); |
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79 } |
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80 |
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81 // ----------------------------------------------------------------------------- |
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82 // CCRPacketBuffer::AddSink |
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83 // |
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84 // ----------------------------------------------------------------------------- |
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85 // |
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86 TInt CCRPacketBuffer::AddSink( CCRPacketSinkBase* aSink ) |
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87 { |
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88 LOG( "CCRPacketBuffer::AddSink() in" ); |
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89 |
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90 // Check if sink exist already? |
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91 TBool exist( EFalse ); |
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92 for ( TInt i( iBookKeeping.Count() - 1 ); i >= 0 && !exist; i-- ) |
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93 { |
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94 exist = ( aSink->Id() == iBookKeeping[i].iId ); |
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95 } |
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96 |
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97 // If not, add sink to list |
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98 TInt err( KErrNone ); |
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99 if ( !exist ) |
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100 { |
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101 SBookKeeping book; |
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102 book.iId = aSink->Id(); |
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103 book.iIndex = KErrNotFound; |
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104 err = iBookKeeping.Append( book ); |
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105 if ( !err ) |
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106 { |
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107 err = iSinkArray.Append( aSink ); |
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108 if ( err ) |
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109 { |
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110 // Remove last from book keeping, because sink append failed |
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111 LOG1( "CCRPacketBuffer::AddSink(), Sink append error: %d", err ); |
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112 iBookKeeping.Remove( iBookKeeping.Count() - 1 ); |
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113 } |
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114 } |
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115 } |
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116 |
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117 LOG3( "CCRPacketBuffer::AddSink() out, err: %d, iSinkArray count: %d, iBookKeeping count: %d", |
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118 err, iSinkArray.Count(), iBookKeeping.Count() ); |
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119 return err; |
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120 } |
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121 |
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122 // ----------------------------------------------------------------------------- |
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123 // CCRPacketBuffer::AddPacket |
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124 // Method for add. |
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125 // ----------------------------------------------------------------------------- |
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126 // |
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127 void CCRPacketBuffer::AddPacket( |
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128 const MCRPacketSource::TCRPacketStreamId& aStream, |
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129 const TDesC8& aHeader, |
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130 const TDesC8& aPacket ) |
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131 { |
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132 // Room |
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133 VerifyRoom(); |
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134 |
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135 // Add packet |
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136 const TInt total( KStreamTypeBytesLength + |
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137 aHeader.Length() + aPacket.Length() ); |
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138 HBufC8* packet = HBufC8::New( total ); |
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139 if ( packet ) |
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140 { |
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141 TPtr8 ptr( packet->Des() ); |
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142 ptr.SetLength( KStreamTypeBytesLength ); |
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143 ptr[KStreamTypeBytePoint] = ( TUint8 )( aStream ); |
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144 ptr.Append( aHeader ); |
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145 ptr.Append( aPacket ); |
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146 if ( iBuffer.Insert( packet, 0 ) ) |
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147 { |
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148 delete packet; |
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149 } |
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150 else |
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151 { |
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152 PacketToBookKeeping(); |
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153 } |
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154 } |
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155 } |
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156 |
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157 // ----------------------------------------------------------------------------- |
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158 // CCRPacketBuffer::AddPacket |
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159 // Method for add. |
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160 // ----------------------------------------------------------------------------- |
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161 // |
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162 void CCRPacketBuffer::AddPacket( |
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163 const MCRPacketSource::TCRPacketStreamId& aStream, |
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164 const TDesC8& aPacket ) |
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165 { |
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166 // Room |
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167 VerifyRoom(); |
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168 |
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169 // Add packet |
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170 const TInt total( KStreamTypeBytesLength + aPacket.Length() ); |
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171 HBufC8* packet = HBufC8::New( total ); |
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172 if ( packet ) |
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173 { |
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174 TPtr8 ptr( packet->Des() ); |
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175 ptr.SetLength( KStreamTypeBytesLength ); |
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176 ptr[KStreamTypeBytePoint] = ( TUint8 )( aStream ); |
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177 ptr.Append( aPacket ); |
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178 if ( iBuffer.Insert( packet, 0 ) ) |
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179 { |
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180 delete packet; |
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181 } |
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182 else |
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183 { |
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184 PacketToBookKeeping(); |
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185 } |
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186 } |
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187 } |
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188 |
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189 // ----------------------------------------------------------------------------- |
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190 // CCRPacketBuffer::ContinousStream |
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191 // Method for set buffer estimate when it ends. |
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192 // ----------------------------------------------------------------------------- |
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193 // |
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194 void CCRPacketBuffer::ContinousStream( const TBool aState ) |
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195 { |
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196 LOG1( "CCRPacketBuffer::ContinousStream(), aState: %d", aState ); |
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197 iContinousStream = aState; |
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198 } |
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199 |
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200 // ----------------------------------------------------------------------------- |
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201 // CCRPacketBuffer::ContinousStream |
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202 // Method for get the time when buffer should end. |
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203 // ----------------------------------------------------------------------------- |
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204 // |
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205 TBool CCRPacketBuffer::ContinousStream() |
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206 { |
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207 return iContinousStream; |
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208 } |
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209 |
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210 // ----------------------------------------------------------------------------- |
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211 // CCRPacketBuffer:::MoreComing |
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212 // Method for set more coming state. |
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213 // ----------------------------------------------------------------------------- |
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214 // |
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215 void CCRPacketBuffer::MoreComing( const TBool aState ) |
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216 { |
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217 iMoreComing = aState; |
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218 } |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // CCRPacketBuffer:::MoreComing |
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222 // Method for get more coming state. |
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223 // ----------------------------------------------------------------------------- |
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224 // |
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225 TBool CCRPacketBuffer::MoreComing() |
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226 { |
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227 return iMoreComing; |
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228 } |
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229 |
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230 // ----------------------------------------------------------------------------- |
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231 // CCRPacketBuffer::GetStream |
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232 // ----------------------------------------------------------------------------- |
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233 // |
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234 TInt CCRPacketBuffer::GetStream( |
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235 const CCRStreamingSession::TCRSinkId& aId, |
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236 MCRPacketSource::TCRPacketStreamId& aStreamId ) |
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237 { |
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238 return GetStream( aId, 0, aStreamId ); |
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239 } |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // CCRPacketBuffer::GetStream |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 TInt CCRPacketBuffer::GetStream( |
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246 const CCRStreamingSession::TCRSinkId& aId, |
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247 const TInt aOffset, |
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248 MCRPacketSource::TCRPacketStreamId& aStreamId ) |
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249 { |
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250 const TInt bookKeeping( GetBookKeeping( aId ) ); |
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251 if ( bookKeeping > KErrNotFound ) |
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252 { |
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253 const TInt index( GetBufferIndex( bookKeeping ) - aOffset ); |
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254 if ( index > KErrNotFound && index < iBuffer.Count() ) |
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255 { |
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256 aStreamId = MCRPacketSource::TCRPacketStreamId( |
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257 iBuffer[index]->Des()[KStreamTypeBytePoint] ); |
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258 } |
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259 } |
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260 |
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261 return bookKeeping; |
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262 } |
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263 |
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264 // ----------------------------------------------------------------------------- |
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265 // CCRPacketBuffer::GetPacket |
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266 // Method for remove |
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267 // ----------------------------------------------------------------------------- |
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268 // |
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269 void CCRPacketBuffer::GetPacket( |
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270 const CCRStreamingSession::TCRSinkId& aId, |
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271 TPtr8& aReturnedData ) |
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272 { |
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273 const TInt bookKeeping( GetBookKeeping( aId ) ); |
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274 GetPacket( bookKeeping, aReturnedData ); |
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275 } |
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276 |
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277 // ----------------------------------------------------------------------------- |
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278 // CCRPacketBuffer::GetPacket |
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279 // Method for remove |
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280 // ----------------------------------------------------------------------------- |
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281 // |
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282 void CCRPacketBuffer::GetPacket( const TInt aBookKeeping, TPtr8& aReturnedData ) |
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283 { |
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284 PeekPacket( aBookKeeping, aReturnedData, 0 ); |
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285 |
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286 if ( aReturnedData.Ptr() || aReturnedData.Length() > 0 ) |
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287 { |
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288 // One packet used |
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289 iBookKeeping[aBookKeeping].iIndex--; |
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290 } |
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291 } |
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292 |
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293 // ----------------------------------------------------------------------------- |
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294 // CCRPacketBuffer::PeekPacket |
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295 // Method for peeking |
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296 // ----------------------------------------------------------------------------- |
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297 // |
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298 void CCRPacketBuffer::PeekPacket( |
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299 const CCRStreamingSession::TCRSinkId& aId, |
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300 TPtr8& aReturnedData, |
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301 const TInt aOffset ) |
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302 { |
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303 const TInt bookKeeping( GetBookKeeping( aId ) ); |
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304 PeekPacket( bookKeeping, aReturnedData, aOffset ); |
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305 } |
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306 |
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307 // ----------------------------------------------------------------------------- |
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308 // CCRPacketBuffer::PeekPacket |
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309 // Method for peeking |
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310 // ----------------------------------------------------------------------------- |
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311 // |
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312 void CCRPacketBuffer::PeekPacket( |
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313 const TInt aBookKeeping, |
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314 TPtr8& aReturnedData, |
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315 const TInt aOffset ) |
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316 { |
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317 aReturnedData.Set( NULL, 0, 0 ); |
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318 |
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319 if ( aBookKeeping > KErrNotFound && aBookKeeping < iBookKeeping.Count() ) |
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320 { |
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321 const TInt index( GetBufferIndex( aBookKeeping ) - aOffset ); |
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322 if ( index > KErrNotFound && index < iBuffer.Count() ) |
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323 { |
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324 // Data |
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325 aReturnedData.Set( |
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326 iBuffer[index]->Des().MidTPtr( KStreamTypeBytesLength ) ); |
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327 } |
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328 } |
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329 } |
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330 |
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331 // ----------------------------------------------------------------------------- |
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332 // CCRPacketBuffer::PacketsCount |
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333 // Method for asking count of packet available. |
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334 // ----------------------------------------------------------------------------- |
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335 // |
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336 TInt CCRPacketBuffer::PacketsCount( const CCRStreamingSession::TCRSinkId& aId ) |
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337 { |
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338 const TInt bookKeeping( GetBookKeeping( aId ) ); |
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339 if ( bookKeeping > KErrNotFound ) |
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340 { |
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341 return iBookKeeping[bookKeeping].iIndex; |
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342 } |
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343 |
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344 return KErrNotFound; |
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345 } |
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346 |
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347 // ----------------------------------------------------------------------------- |
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348 // CCRPacketBuffer::PacketsMinCount |
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349 // Method for asking minimum count of packet available in any sink. |
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350 // ----------------------------------------------------------------------------- |
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351 // |
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352 TInt CCRPacketBuffer::PacketsMinCount() |
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353 { |
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354 TInt ret( KMaxTInt ); |
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355 for ( TInt i( iBookKeeping.Count() - 1 ); i >= 0 ; i-- ) |
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356 { |
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357 if ( iBookKeeping[i].iIndex < ret ) |
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358 { |
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359 ret = iBookKeeping[i].iIndex; |
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360 } |
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361 } |
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362 |
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363 return ret; |
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364 } |
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365 |
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366 // ----------------------------------------------------------------------------- |
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367 // CCRPacketBuffer::HandleBufferSize |
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368 // Removes packets which are used in all book keepings. |
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369 // ----------------------------------------------------------------------------- |
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370 // |
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371 void CCRPacketBuffer::HandleBufferSize() |
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372 { |
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373 // Find maximum index |
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374 TInt max( KErrNotFound ); |
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375 for ( TInt i( 0 ); i < iBookKeeping.Count(); i++ ) |
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376 { |
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377 max = Max( max, iBookKeeping[i].iIndex ); |
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378 } |
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379 |
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380 // Delete used packets |
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381 const TInt oldCount( iBuffer.Count() ); |
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382 for ( TInt i( oldCount - 1 ); ( i > max ) && ( i > KErrNotFound ); i-- ) |
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383 { |
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384 delete iBuffer[i]; |
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385 iBuffer.Remove( i ); |
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386 } |
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387 |
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388 // Compress if packets deleted |
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389 if ( iBuffer.Count() < oldCount ) |
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390 { |
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391 iBuffer.Compress(); |
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392 } |
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393 } |
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394 |
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395 // ----------------------------------------------------------------------------- |
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396 // CCRPacketBuffer::AdjustBuffer |
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397 // Drops packets to 25% of buffers max size. |
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398 // ----------------------------------------------------------------------------- |
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399 // |
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400 void CCRPacketBuffer::AdjustBuffer() |
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401 { |
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402 const TInt limit( iMaxPackets / 4 ); |
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403 for ( TInt i( iBookKeeping.Count() - 1 ); i >= 0 ; i-- ) |
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404 { |
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405 if ( iBookKeeping[i].iIndex > limit ) |
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406 { |
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407 LOG3( "CCRPacketBuffer::AdjustBuffer(), book: %d, index: %d, limit: %d", |
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408 i, iBookKeeping[i].iIndex, limit ); |
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409 iBookKeeping[i].iIndex = limit; |
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410 } |
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411 } |
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412 } |
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413 |
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414 // ----------------------------------------------------------------------------- |
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415 // CCRPacketBuffer::ResetBuffer |
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416 // |
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417 // ----------------------------------------------------------------------------- |
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418 // |
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419 void CCRPacketBuffer::ResetBuffer() |
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420 { |
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421 // Reset book keeping |
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422 for ( TInt i( iBookKeeping.Count() - 1 ); i >= 0 ; i-- ) |
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423 { |
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424 LOG2( "CCRPacketBuffer::ResetBuffer(), book: %d, index: %d", |
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425 i, iBookKeeping[i].iIndex ); |
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426 iBookKeeping[i].iIndex = KErrNotFound; |
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427 } |
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428 |
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429 // Notify sinks |
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430 for ( TInt i( iSinkArray.Count() - 1 ); i >= 0; i-- ) |
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431 { |
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432 iSinkArray[i]->BufferResetDone(); |
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433 } |
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434 |
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435 // Reset items |
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436 iBuffer.ResetAndDestroy(); |
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437 } |
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438 |
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439 // ----------------------------------------------------------------------------- |
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440 // CCRPacketBuffer::RemoveSink |
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441 // |
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442 // ----------------------------------------------------------------------------- |
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443 // |
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444 TInt CCRPacketBuffer::RemoveSink( CCRPacketSinkBase* aSink ) |
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445 { |
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446 // Sink |
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447 for ( TInt i( iSinkArray.Count() - 1 ); i >= 0; i-- ) |
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448 { |
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449 if ( iSinkArray[i] == aSink ) |
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450 { |
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451 iSinkArray.Remove( i ); |
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452 LOG1( "CCRPacketBuffer::RemoveSink(), removed Sink: %d", i ); |
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453 } |
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454 } |
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455 |
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456 // Book keeping |
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457 for ( TInt i( iBookKeeping.Count() - 1 ); i >= 0; i-- ) |
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458 { |
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459 if ( iBookKeeping[i].iId == aSink->Id() ) |
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460 { |
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461 iBookKeeping.Remove( i ); |
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462 LOG1( "CCRPacketBuffer::RemoveSink(), removed Book keeping: %d", i ); |
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463 } |
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464 } |
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465 |
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466 return iSinkArray.Count(); |
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467 } |
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468 |
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469 // ----------------------------------------------------------------------------- |
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470 // CCRPacketBuffer::VerifyRoom() |
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471 // Verify maximum packets in buffer. Will drop packets count to 1/4 if maximum |
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472 // size reached. |
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473 // ----------------------------------------------------------------------------- |
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474 // |
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475 void CCRPacketBuffer::VerifyRoom() |
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476 { |
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477 TInt count( iBuffer.Count() ); |
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478 if ( count >= iMaxPackets ) |
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479 { |
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480 LOG1( "CCRPacketBuffer::VerifyRoom(), Buffer full ! count: %d", count ); |
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481 AdjustBuffer(); |
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482 |
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483 // Make sure memory not run out because of asyncronous packets deleting |
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484 if ( count >= ( iMaxPackets * 2 ) ) |
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485 { |
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486 ResetBuffer(); |
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487 } |
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488 } |
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489 } |
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490 |
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491 // ----------------------------------------------------------------------------- |
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492 // CCRPacketBuffer::GetBookKeeping |
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493 // Updates book keeping index basing on sink id. |
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494 // ----------------------------------------------------------------------------- |
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495 // |
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496 TInt CCRPacketBuffer::GetBookKeeping( const CCRStreamingSession::TCRSinkId& aId ) |
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497 { |
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498 for ( TInt i( 0 ); i < iBookKeeping.Count(); i++ ) |
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499 { |
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500 if ( iBookKeeping[i].iId == aId ) |
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501 { |
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502 return i; |
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503 } |
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504 } |
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505 |
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506 return KErrNotFound; |
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507 } |
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508 |
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509 // ----------------------------------------------------------------------------- |
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510 // CCRPacketBuffer::GetBufferIndex |
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511 // Getter for buffer index from book keeping. |
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512 // ----------------------------------------------------------------------------- |
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513 // |
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514 TInt CCRPacketBuffer::GetBufferIndex( const TInt aBookKeeping ) |
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515 { |
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516 if ( aBookKeeping > KErrNotFound && aBookKeeping < iBookKeeping.Count() ) |
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517 { |
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518 return iBookKeeping[aBookKeeping].iIndex; |
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519 } |
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520 |
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521 return KErrNotFound; |
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522 } |
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523 |
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524 // ----------------------------------------------------------------------------- |
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525 // CCRPacketBuffer::PacketToBookKeeping |
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526 // |
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527 // ----------------------------------------------------------------------------- |
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528 // |
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529 void CCRPacketBuffer::PacketToBookKeeping() |
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530 { |
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531 // New packet to book keeping |
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532 for ( TInt i( 0 ); i < iBookKeeping.Count(); i++ ) |
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533 { |
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534 iBookKeeping[i].iIndex++; |
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535 } |
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536 |
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537 // New packet available |
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538 for ( TInt i( 0 ); i < iSinkArray.Count(); i++ ) |
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539 { |
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540 iSinkArray[i]->NewPacketAvailable(); |
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541 } |
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542 } |
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543 |
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544 // End of File |