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1 /* |
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2 * Copyright (c) 2005 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: MCC Redundancy CodecInformation |
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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 // INCLUDE FILES |
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22 #include "mmcccodecred.h" |
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23 #include "mccuids.hrh" |
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24 #include "mmccinterfacelogs.h" |
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25 #include "mccinternalcodecs.h" |
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26 |
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27 |
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28 // ============================= LOCAL FUNCTIONS =============================== |
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29 |
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30 |
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31 // ============================ MEMBER FUNCTIONS =============================== |
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32 |
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33 // ----------------------------------------------------------------------------- |
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34 // CMccCodecRed::CMccCodecRed |
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35 // default constructor |
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36 // ----------------------------------------------------------------------------- |
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37 // |
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38 CMccCodecRed::CMccCodecRed() : CMccCodecInformation() |
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39 { |
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40 |
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41 } |
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42 |
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43 // ----------------------------------------------------------------------------- |
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44 // CMccCodecRed::ConstructL |
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45 // Symbian 2nd phase constructor can leave. |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 void CMccCodecRed::ConstructL() |
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49 { |
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50 iSdpName.Copy( KRedSdpName ); |
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51 |
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52 iFmtpAttr = HBufC8::NewL( 1 ); |
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53 TPtr8 ptr = iFmtpAttr->Des(); |
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54 ptr.Append( KNullDesC ); |
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55 |
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56 SetSamplingFreq( KRedSamplingFreq ); |
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57 EnableVAD( EFalse ); |
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58 SetMaxPTime( KRedMaxPTime ); // recommended "limit" 200ms |
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59 SetPTime( KRedPTime ); // default 20ms |
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60 SetPayloadType( KDefaultRedPT ); |
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61 |
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62 iFourCC = KMccFourCCIdRed; |
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63 iCodecMode = ENothing; |
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64 |
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65 iPayloadFormatEncoder = KImplUidRedPayloadFormatEncode; |
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66 iPayloadFormatDecoder = KImplUidRedPayloadFormatDecode; |
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67 } |
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68 |
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69 // ----------------------------------------------------------------------------- |
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70 // CMccCodecRed::NewLC |
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71 // Static constructor. |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 CMccCodecRed* CMccCodecRed::NewL() |
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75 { |
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76 CMccCodecRed* self = new (ELeave) CMccCodecRed; |
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77 CleanupStack::PushL( self ); |
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78 self->ConstructL(); |
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79 CleanupStack::Pop( self ); |
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80 return self; |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CMccCodecRed::~CMccCodecRed |
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85 // Destructor |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 CMccCodecRed::~CMccCodecRed() |
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89 { |
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90 iRedPayloads.Reset(); |
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91 iRedPayloads.Close(); |
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92 } |
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93 |
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94 // ----------------------------------------------------------------------------- |
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95 // CMccCodecRed::RequireSignalling |
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96 // ----------------------------------------------------------------------------- |
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97 // |
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98 TBool CMccCodecRed::RequireSignalling( |
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99 const CMccCodecInformation& aCandidate ) const |
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100 { |
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101 __INTERFACE( "CMccCodecRed::RequireSignalling" ) |
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102 |
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103 const CMccCodecRed& candidate = static_cast<const CMccCodecRed&>( aCandidate ); |
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104 |
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105 TBool ret = EFalse; |
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106 |
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107 if ( iPTime != candidate.PTime() ) |
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108 { |
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109 __INTERFACE( "CMccCodecRed::RequireSignalling, PTime changed" ) |
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110 ret = ETrue; |
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111 } |
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112 |
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113 if ( iMaxPTime != candidate.MaxPTime() ) |
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114 { |
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115 __INTERFACE( "CMccCodecRed::RequireSignalling, MaxPTime changed" ) |
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116 ret = ETrue; |
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117 } |
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118 |
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119 if ( iPayloadType != candidate.PayloadType() ) |
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120 { |
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121 __INTERFACE( "CMccCodecRed::RequireSignalling, PayloadType changed" ) |
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122 ret = ETrue; |
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123 } |
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124 |
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125 if ( iCodecMode != candidate.CodecMode() ) |
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126 { |
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127 __INTERFACE( "CMccCodecRed::RequireSignalling, CodecMode changed" ) |
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128 ret = ETrue; |
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129 } |
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130 |
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131 const RArray<TUint>& candidatePayloads = candidate.RedPayloads(); |
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132 |
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133 if ( candidatePayloads.Count() != iRedPayloads.Count() ) |
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134 { |
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135 __INTERFACE( "CMccCodecRed::RequireSignalling, RedPayloads changed" ) |
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136 ret = ETrue; |
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137 } |
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138 else |
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139 { |
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140 for ( TInt i = 0; i < candidatePayloads.Count(); i++ ) |
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141 { |
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142 if ( candidatePayloads[ i ] != iRedPayloads[ i ] ) |
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143 { |
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144 __INTERFACE( "CMccCodecRed::RequireSignalling, RedPayload changed" ) |
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145 ret = ETrue; |
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146 } |
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147 } |
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148 } |
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149 |
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150 __INTERFACE_INT1( "CMccCodecRed::RequireSignalling, exit with", ret ) |
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151 return ret; |
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152 } |
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153 |
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154 // ----------------------------------------------------------------------------- |
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155 // CMccCodecRed::SetBitrate |
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156 // Sets the bitrate used with Redundacy codec. |
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157 // ----------------------------------------------------------------------------- |
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158 // |
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159 TInt CMccCodecRed::SetBitrate( TUint aBitrate ) |
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160 { |
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161 iBitrate = aBitrate; |
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162 return KErrNone; |
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163 } |
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164 |
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165 // ----------------------------------------------------------------------------- |
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166 // CMccCodecRed::SetSamplingFreq |
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167 // Sets the sampling frequency. |
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168 // ----------------------------------------------------------------------------- |
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169 // |
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170 TInt CMccCodecRed::SetSamplingFreq( TUint32 aSamplingFreq ) |
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171 { |
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172 iSamplingFreq = aSamplingFreq; |
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173 return KErrNone; |
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174 } |
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175 |
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176 // ----------------------------------------------------------------------------- |
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177 // CMccCodecRed::SetSdpName |
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178 // Sets the SDP name |
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179 // ----------------------------------------------------------------------------- |
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180 TInt CMccCodecRed::SetSdpName( const TDesC8& aSdpName ) |
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181 { |
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182 if ( !aSdpName.CompareF( KRedSdpName ) ) |
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183 { |
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184 iSdpName.Copy( aSdpName ); |
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185 } |
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186 else |
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187 { |
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188 return KErrNotSupported; |
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189 } |
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190 |
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191 return KErrNone; |
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192 } |
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193 |
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194 // ----------------------------------------------------------------------------- |
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195 // CMccCodecRed::PayloadType |
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196 // Sets the payload type |
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197 // ----------------------------------------------------------------------------- |
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198 TInt CMccCodecRed::SetPayloadType( TUint8 aPayloadType ) |
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199 { |
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200 if ( aPayloadType < KMinDynamicPT || |
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201 aPayloadType > KMaxPayloadType ) |
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202 { |
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203 return KErrNotSupported; |
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204 } |
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205 else |
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206 { |
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207 iPayloadType = aPayloadType; |
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208 return KErrNone; |
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209 } |
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210 } |
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211 |
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212 // ----------------------------------------------------------------------------- |
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213 // CMccCodecRed::SetCodecMode |
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214 // Sets the codec mode |
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215 // ----------------------------------------------------------------------------- |
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216 TInt CMccCodecRed::SetCodecMode( TCodecMode aCodecMode ) |
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217 { |
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218 if ( ENothing == aCodecMode ) |
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219 { |
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220 iCodecMode = aCodecMode; |
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221 return KErrNone; |
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222 } |
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223 else |
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224 { |
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225 return KErrNotSupported; |
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226 } |
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227 } |
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228 |
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229 // ----------------------------------------------------------------------------- |
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230 // CMccCodecRed::EnableVAD |
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231 // |
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232 // ----------------------------------------------------------------------------- |
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233 TInt CMccCodecRed::EnableVAD( TBool aEnableVAD ) |
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234 { |
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235 iEnableVAD = aEnableVAD; |
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236 return KErrNone; |
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237 } |
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238 |
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239 |
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240 // ----------------------------------------------------------------------------- |
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241 // CMccCodecRed::SetPTime |
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242 // |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 TInt CMccCodecRed::SetPTime( TUint aPTime ) |
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246 { |
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247 if ( aPTime && ( KMinPtime <= aPTime ) && ( aPTime <= KMaxPtime ) && |
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248 (( aPTime % KMinPtime ) == 0 )) |
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249 { |
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250 iPTime = aPTime; |
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251 return KErrNone; |
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252 } |
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253 else |
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254 { |
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255 return KErrNotSupported; |
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256 } |
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257 } |
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258 |
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259 // ----------------------------------------------------------------------------- |
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260 // CMccCodecRed::SetMaxPTime |
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261 // |
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262 // ----------------------------------------------------------------------------- |
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263 // |
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264 TInt CMccCodecRed::SetMaxPTime( TUint aMaxPTime ) |
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265 { |
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266 if ( aMaxPTime && ( iPTime <= aMaxPTime )&& ( KMinPtime <= aMaxPTime ) && |
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267 ( aMaxPTime <= KMaxPtime ) && (( aMaxPTime % KMinPtime ) == 0 ) ) |
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268 { |
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269 iMaxPTime = aMaxPTime; |
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270 return KErrNone; |
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271 } |
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272 else |
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273 { |
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274 return KErrNotSupported; |
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275 } |
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276 } |
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277 |
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278 // ----------------------------------------------------------------------------- |
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279 // CMccCodecInformation::ParseFmtpAttr |
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280 // Parses the fmtp attribute |
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281 // ----------------------------------------------------------------------------- |
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282 // |
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283 TBool CMccCodecRed::ParseFmtpAttrL( const TDesC8& aFmtp ) |
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284 { |
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285 // Parse codecs used for primary and secondary etc. codecs from the |
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286 // fmtp attribute |
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287 // example fmtp attribute: |
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288 // a=fmtp:99 0/103 |
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289 // 99 is the redundancy format payload type |
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290 // 0 is the primary codecs payload type |
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291 // 103 is the secondary codecs payload type |
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292 |
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293 // NOTE: currently redundancy is allowed only for single payload type |
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294 |
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295 TBool updated( EFalse ); |
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296 |
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297 TInt nextIndex = 0; |
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298 TInt prevIndex = 0; |
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299 TUint8 prevPayloadFormat = KMccPayloadTypeMax; |
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300 HBufC8* modifyBuf = HBufC8::NewLC( aFmtp.Length() ); |
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301 TPtr8 pFmtpValue( modifyBuf->Des() ); |
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302 pFmtpValue = aFmtp; |
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303 |
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304 if( aFmtp.Length() > 0 ) |
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305 { |
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306 // Search for all the slashes and convert number strings between them |
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307 // to integers |
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308 TBool found = ETrue; |
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309 while( EFalse != found ) |
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310 { |
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311 pFmtpValue = modifyBuf->Mid( nextIndex ); |
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312 nextIndex = pFmtpValue.Locate( KCharSlash ); |
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313 if( ( KErrNotFound == nextIndex ) ) |
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314 { |
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315 found = EFalse; |
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316 if( 0 != pFmtpValue.Length() ) |
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317 { |
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318 nextIndex = pFmtpValue.Length(); // Handle last payload value |
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319 } |
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320 } |
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321 if( 0 != pFmtpValue.Length() ) |
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322 { |
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323 TLex8 lex = pFmtpValue.Mid( prevIndex, (nextIndex - prevIndex) ); |
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324 TUint8 payloadFormat; |
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325 TInt err = lex.Val( payloadFormat, EDecimal ); |
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326 if( KErrNone == err ) |
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327 { |
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328 if ( prevPayloadFormat != KMccPayloadTypeMax && |
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329 prevPayloadFormat != payloadFormat ) |
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330 { |
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331 iRedPayloads.Reset(); |
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332 User::Leave( KErrNotSupported ); |
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333 } |
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334 |
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335 iRedPayloads.AppendL( static_cast<TUint>( payloadFormat ) ); |
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336 updated = ETrue; |
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337 prevPayloadFormat = payloadFormat; |
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338 } |
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339 |
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340 nextIndex++; |
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341 prevIndex = 0; |
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342 } |
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343 } |
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344 } |
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345 |
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346 CleanupStack::PopAndDestroy( modifyBuf ); |
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347 |
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348 return updated; |
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349 } |
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350 |
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351 // ----------------------------------------------------------------------------- |
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352 // CMccCodecRed::SetAllowedBitrates |
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353 // ----------------------------------------------------------------------------- |
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354 // |
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355 TInt CMccCodecRed::SetAllowedBitrates( TUint /*aBitrateMask*/ ) |
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356 { |
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357 return KErrNone; |
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358 } |
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359 |
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360 // ----------------------------------------------------------------------------- |
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361 // CMccCodecRed::SetRedCodecs |
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362 // Set the payload types used in redundancy |
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363 // ----------------------------------------------------------------------------- |
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364 // |
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365 void CMccCodecRed::SetRedPayloadsL( RArray<TUint>& aRedPayloads ) |
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366 { |
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367 iRedPayloads.Reset(); |
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368 TInt i; |
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369 for( i = 0; i < aRedPayloads.Count(); i++ ) |
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370 { |
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371 iRedPayloads.AppendL( aRedPayloads[ i ] ); |
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372 } |
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373 |
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374 // Convert parsed payload formats back to string and set |
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375 // the iFmtpAttr variable |
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376 const TInt KCharsPerPayload( 4 ); |
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377 delete iFmtpAttr; |
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378 iFmtpAttr = NULL; |
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379 iFmtpAttr = HBufC8::NewL( iRedPayloads.Count() * KCharsPerPayload ); |
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380 |
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381 TPtr8 descPtr = iFmtpAttr->Des(); |
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382 for( i = 0; i < iRedPayloads.Count(); i++ ) |
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383 { |
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384 descPtr.AppendNum( static_cast<TUint64>( iRedPayloads[i] ), EDecimal ); |
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385 descPtr.Append( KCharSlash ); |
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386 } |
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387 |
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388 // Remove the last slash character |
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389 descPtr.SetLength( descPtr.Length() - 1 ); |
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390 } |
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391 |
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392 // ----------------------------------------------------------------------------- |
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393 // CMccCodecRed::RedPayloadsL |
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394 // Fills array with red payload type values |
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395 // ----------------------------------------------------------------------------- |
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396 // |
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397 void CMccCodecRed::RedPayloadsL( RArray<TUint>& aRedPayloads ) const |
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398 { |
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399 for ( TInt i = 0; i < iRedPayloads.Count(); i++ ) |
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400 { |
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401 aRedPayloads.AppendL( iRedPayloads[ i ] ); |
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402 } |
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403 } |
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404 |
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405 // ----------------------------------------------------------------------------- |
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406 // CMccCodecInformation::RedPayloads |
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407 // Return the reference to the redundancy codecs array |
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408 // ----------------------------------------------------------------------------- |
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409 // |
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410 const RArray<TUint>& CMccCodecRed::RedPayloads() const |
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411 { |
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412 return iRedPayloads; |
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413 } |
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414 |
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415 // ----------------------------------------------------------------------------- |
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416 // CMccCodecRed::CloneDefaultsL |
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417 // Make a default setting clone from this Redundancy codec |
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418 // ----------------------------------------------------------------------------- |
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419 // |
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420 CMccCodecInformation* CMccCodecRed::CloneDefaultsL() |
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421 { |
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422 return CMccCodecRed::NewL(); |
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423 } |
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424 |
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425 // ----------------------------------------------------------------------------- |
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426 // CMCCAMRCodec::CloneDetailedL |
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427 // Make a detailed clone from this Redundancy codec |
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428 // ----------------------------------------------------------------------------- |
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429 // |
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430 CMccCodecInformation* CMccCodecRed::CloneDetailedL() |
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431 { |
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432 CMccCodecRed* newCodec = CMccCodecRed::NewL(); |
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433 CleanupStack::PushL( newCodec ); |
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434 newCodec->SetBitrate( this->Bitrate() ); |
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435 newCodec->SetCodecMode( this->CodecMode() ); |
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436 newCodec->SetMaxPTime( this->MaxPTime() ); |
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437 newCodec->SetPayloadType( this->PayloadType() ); |
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438 newCodec->SetPTime( this->PTime() ); |
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439 newCodec->SetSamplingFreq( this->SamplingFreq() ); |
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440 newCodec->SetSdpName( this->SdpName() ); |
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441 newCodec->ParseFmtpAttrL( this->GetFmtpL() ); |
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442 CleanupStack::Pop( newCodec ); |
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443 return newCodec; |
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444 } |
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445 |
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446 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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447 |
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448 |
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449 // End of File |