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1 /* |
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2 * Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Base class for redundancy payload encoder and decoder |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 // INCLUDE FILES |
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23 #include <mmf/server/mmfdatabuffer.h> |
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24 #include "mccredencdecbase.h" |
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25 #include "mccredpayloadformatdefs.h" |
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26 |
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27 // ============================= LOCAL FUNCTIONS =============================== |
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28 |
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29 // ============================ MEMBER FUNCTIONS =============================== |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // CMccRedEncDecBase::CMccRedEncDecBase |
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33 // C++ default constructor can NOT contain any code, that |
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34 // might leave. |
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35 // ----------------------------------------------------------------------------- |
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36 // |
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37 CMccRedEncDecBase::CMccRedEncDecBase() |
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38 : |
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39 iRedBlockCount( KDefRedCount ) |
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40 { |
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41 DP_RED_ENCODE( "CMccRedEncDecBase::CMccRedEncDecBase" ) |
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42 } |
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43 |
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44 // Destructor |
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45 CMccRedEncDecBase::~CMccRedEncDecBase() |
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46 { |
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47 DP_RED_ENCODE( "CMccRedEncDecBase::~CMccRedEncDecBase" ) |
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48 iEncodings.DeleteAll(); |
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49 delete iRTPPayload; |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CMccRedEncDecBase::SetEncodingBlockL |
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54 // Set encoding, which is wanted to encode/decode. |
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55 // SetMaxPayloadSizeL() MUST be called before coming here. |
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56 // ----------------------------------------------------------------------------- |
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57 // |
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58 void CMccRedEncDecBase::SetEncodingBlockL( TMccRedEncoding aEncoding, |
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59 TDesC8& aEncodingBuf ) |
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60 { |
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61 DP_RED_ENCODE2( "CMccRedEncDecBase::SetEncodingBlock() - \ |
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62 PARAMBUF SIZE: %d", aEncodingBuf.Size() ) |
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63 |
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64 if ( EMccRTPPayload == aEncoding ) |
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65 { |
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66 __ASSERT_ALWAYS( iRTPPayload, User::Leave( KErrNotReady ) ); |
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67 |
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68 DP_RED_ENCODE2( "MAX RTP Payload SIZE to ACCEPT: %d", \ |
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69 iRTPPayload->Data().MaxSize() ) |
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70 |
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71 TDes8& rtpPayload = iRTPPayload->Data(); |
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72 rtpPayload.Copy( aEncodingBuf ); |
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73 } |
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74 else |
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75 { |
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76 __ASSERT_ALWAYS( aEncoding < iEncodings.Count(), |
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77 User::Leave( KErrArgument ) ); |
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78 __ASSERT_ALWAYS( iEncodings[ aEncoding ], User::Leave( KErrNotReady ) ); |
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79 |
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80 TDes8& encoding = iEncodings[ aEncoding ]->Data(); |
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81 DP_RED_ENCODE2( "MAX Encoding SIZE to ACCEPT: %d", \ |
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82 encoding.MaxSize() ) |
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83 |
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84 encoding.Copy( aEncodingBuf ); |
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85 } |
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86 } |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // CMccRedEncDecBase::GetEncodingBlockL |
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90 // Get encoding specified with parameter. |
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91 // ----------------------------------------------------------------------------- |
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92 // |
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93 void CMccRedEncDecBase::GetEncodingBlockL( TMccRedEncoding aEncoding, |
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94 TDes8& aToBuffer ) |
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95 { |
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96 DP_RED_ENCODE2( "CMccRedEncDecBase::GetEncodingBlock() - \ |
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97 PARAMBUFSIZE: %d", aToBuffer.MaxSize() ) |
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98 |
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99 if ( EMccRTPPayload == aEncoding ) |
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100 { |
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101 __ASSERT_ALWAYS( iRTPPayload, User::Leave( KErrNotReady ) ); |
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102 DP_RED_ENCODE2( "RTP Payload SIZE: %d", iRTPPayload->Data().Size() ) |
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103 aToBuffer.Copy( iRTPPayload->Data() ); |
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104 } |
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105 else |
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106 { |
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107 __ASSERT_ALWAYS( aEncoding < iEncodings.Count(), |
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108 User::Leave( KErrArgument ) ); |
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109 |
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110 DP_RED_ENCODE2( "Encoding SIZE: %d", \ |
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111 iEncodings[ aEncoding ]->Data().Size() ) |
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112 |
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113 aToBuffer.Copy( iEncodings[ aEncoding ]->Data() ); |
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114 } |
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115 } |
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116 |
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117 |
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118 // ----------------------------------------------------------------------------- |
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119 // CMccRedEncDecBase::SetPayloadTypes |
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120 // Set payload types to wait for. Issue payload not defined values for unused |
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121 // encodings. |
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122 // ----------------------------------------------------------------------------- |
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123 // |
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124 TInt CMccRedEncDecBase::SetPayloadTypes( RArray<TUint>& aPayloadTypes ) |
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125 { |
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126 TInt ptCount( aPayloadTypes.Count() ); |
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127 |
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128 DP_RED_ENCODE2( "CMccRedEncDecBase::SetPayloadTypes() - PTs: %d", |
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129 ptCount ) |
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130 |
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131 TInt maxNumOfPTs( iPayloadTypes.Count() ); |
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132 |
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133 if ( ptCount && ptCount <= maxNumOfPTs ) |
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134 { |
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135 TInt payloadInd( 0 ); |
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136 |
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137 for ( ; payloadInd < ptCount; payloadInd++ ) |
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138 { |
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139 iPayloadTypes[payloadInd] = |
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140 static_cast<TUint8>( aPayloadTypes[payloadInd] ); |
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141 } |
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142 |
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143 for ( ; payloadInd < maxNumOfPTs; payloadInd++ ) |
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144 { |
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145 iPayloadTypes[payloadInd] = KPayloadNotDefined; |
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146 } |
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147 |
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148 return KErrNone; |
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149 } |
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150 else |
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151 { |
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152 return KErrArgument; |
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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 // CMccRedEncDecBase::InitializeL |
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159 // Reserve space for buffers and reset variables. |
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160 // ----------------------------------------------------------------------------- |
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161 // |
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162 void CMccRedEncDecBase::InitializeL( TInt aRedBlockCount, TInt aMaxPayloadSize, |
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163 TInt aNumOfEncodings ) |
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164 { |
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165 DP_RED_ENCODE4( "CMccRedEncDecBase::InitializeL - RedBC: %d, MaxPS: %d, \ |
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166 NumOfEncs: %d", aRedBlockCount, aMaxPayloadSize, aNumOfEncodings ) |
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167 __ASSERT_ALWAYS( aNumOfEncodings <= iEncodings.Count(), |
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168 User::Leave( KErrArgument ) ); |
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169 |
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170 TInt redHeadersSize( aRedBlockCount * KRedHeaderSize + KFinalHeaderSize ); |
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171 iMaxPayloadSize |
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172 = ( aRedBlockCount + 1 ) * ( aMaxPayloadSize ) + redHeadersSize; |
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173 |
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174 // Reserve space for RTP payload, which includes redundancy |
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175 delete iRTPPayload; |
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176 iRTPPayload = NULL; |
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177 iRTPPayload = CMMFDataBuffer::NewL( iMaxPayloadSize ); |
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178 DP_RED_ENCODE2( "Redundancy payload MAX size: %d", iMaxPayloadSize ) |
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179 |
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180 // Reserve memory for payload for number of encodings used |
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181 TUint encBufSize( aMaxPayloadSize * ( aRedBlockCount + 1 ) ); |
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182 for ( TInt i = 0; i < aNumOfEncodings; i++ ) |
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183 { |
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184 if ( iEncodings[i] ) |
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185 { |
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186 if ( iEncodings[i]->BufferSize() < encBufSize ) |
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187 { |
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188 delete iEncodings[i]; |
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189 iEncodings[i] = NULL; |
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190 iEncodings[i] = CMMFDataBuffer::NewL( encBufSize ); |
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191 } |
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192 } |
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193 else |
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194 { |
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195 iEncodings[i] = CMMFDataBuffer::NewL( encBufSize ); |
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196 } |
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197 } |
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198 |
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199 return DoInitializeL( aRedBlockCount, aMaxPayloadSize, aNumOfEncodings ); |
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200 } |
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201 |
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202 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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203 |
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204 |
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205 // End of File |