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1 /* |
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2 * Copyright (c) 2004-2006 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: MCC G.711 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 "mmcccodecg711.h" |
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23 #include "mccuids.hrh" |
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24 #include "mmccinterfacelogs.h" |
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25 |
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26 // CONSTANTS |
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27 |
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28 const TUint8 KG711KAPayloadSize = 160; |
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29 const TUint8 KG711KeepAlivePayload[KG711KAPayloadSize] = |
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30 { |
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31 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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32 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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33 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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34 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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35 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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36 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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37 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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38 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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39 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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40 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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41 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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42 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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43 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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44 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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45 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
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46 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF |
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47 }; |
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48 |
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49 const TInt KG711SampleRate = 8000; |
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50 // ============================ MEMBER FUNCTIONS =============================== |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CMCCCodecG711::CMCCCodecG711 |
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54 // default constructor |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 CMCCCodecG711::CMCCCodecG711() : CMccCodecInformation() |
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58 { |
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59 } |
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60 |
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61 // ----------------------------------------------------------------------------- |
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62 // CMCCCodecG711::ConstructL |
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63 // Symbian 2nd phase constructor can leave. |
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64 // ----------------------------------------------------------------------------- |
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65 // |
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66 void CMCCCodecG711::ConstructL() |
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67 { |
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68 __INTERFACE( "CMCCCodecG711::ConstructL" ) |
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69 |
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70 iKeepAliveData.Copy( KG711KeepAlivePayload, KMaxKeepAliveDataLen); |
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71 SetSamplingFreq( KG711SampleRate ); |
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72 SetBitrate( KG711Bitrate64 ); |
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73 EnableVAD( EFalse ); |
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74 iHwFrameTime = KG711DefaultHwFrameTime; // default 20ms |
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75 SetMaxPTime( KMaxPtime ); |
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76 SetPTime( KDefaultPtime ); |
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77 SetPayloadType( KPcmuPayloadType ); |
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78 SetSdpName( KPCMUSdpName ); |
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79 SetCodecMode( EPCMU ); |
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80 |
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81 iFourCC = KMccFourCCIdG711; |
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82 iPayloadFormatEncoder = KImplUidG711PayloadFormatEncode; |
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83 iPayloadFormatDecoder = KImplUidG711PayloadFormatDecode; |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CMCCCodecG711::NewL |
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88 // Static constructor. |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 CMCCCodecG711* CMCCCodecG711::NewL() |
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92 { |
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93 CMCCCodecG711* self = new (ELeave) CMCCCodecG711; |
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94 CleanupStack::PushL( self ); |
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95 self->ConstructL(); |
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96 CleanupStack::Pop( self ); |
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97 return self; |
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98 } |
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99 |
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100 // ----------------------------------------------------------------------------- |
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101 // CMCCCodecG711::~CMCCCodecG711 |
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102 // Destructor |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 CMCCCodecG711::~CMCCCodecG711() |
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106 { |
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107 __INTERFACE( "CMCCCodecG711::~CMCCCodecG711" ) |
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108 } |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // CMCCCodecG711::EnableVAD |
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112 // Enable / Disable VAD |
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113 // ----------------------------------------------------------------------------- |
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114 // |
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115 TInt CMCCCodecG711::EnableVAD( TBool aEnableVAD ) |
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116 { |
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117 iEnableVAD = aEnableVAD; |
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118 return KErrNone; |
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119 } |
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120 |
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121 |
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122 // ----------------------------------------------------------------------------- |
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123 // CMCCCodecG711::SetBitrate |
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124 // Set Bitrate |
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125 // ----------------------------------------------------------------------------- |
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126 // |
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127 TInt CMCCCodecG711::SetBitrate( TUint aBitrate ) |
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128 { |
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129 if ( KG711Bitrate64 != aBitrate ) |
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130 { |
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131 return KErrNotSupported; |
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132 } |
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133 else |
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134 { |
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135 iBitrate = aBitrate; |
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136 return KErrNone; |
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137 } |
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138 } |
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139 |
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140 |
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141 // ----------------------------------------------------------------------------- |
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142 // CMCCCodecG711::SetSamplingFreq |
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143 // Set Sampling Frequency |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 TInt CMCCCodecG711::SetSamplingFreq( TUint32 aSamplingFreq ) |
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147 { |
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148 if ( KG711SampleRate == aSamplingFreq ) |
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149 { |
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150 iSamplingFreq = aSamplingFreq; |
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151 return KErrNone; |
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152 } |
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153 else |
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154 { |
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155 return KErrNotSupported; |
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156 } |
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157 } |
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158 |
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159 // ----------------------------------------------------------------------------- |
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160 // CMCCCodecG711::SetSdpName |
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161 // Set SDP Name |
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162 // ----------------------------------------------------------------------------- |
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163 // |
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164 TInt CMCCCodecG711::SetSdpName( const TDesC8& aSdpName ) |
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165 { |
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166 if ( !aSdpName.CompareF( KPCMUSdpName ) ) |
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167 { |
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168 iSdpName.Copy( aSdpName ); |
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169 SetCodecMode( EPCMU ); |
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170 } |
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171 else if ( !aSdpName.CompareF( KPCMASdpName ) ) |
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172 { |
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173 iSdpName.Copy( aSdpName ); |
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174 SetCodecMode( EPCMA ); |
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175 } |
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176 else |
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177 { |
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178 return KErrNotSupported; |
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179 } |
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180 |
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181 return KErrNone; |
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182 } |
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183 |
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184 // ----------------------------------------------------------------------------- |
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185 // CMCCCodecG711::SetPayloadType |
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186 // Set PayloadType |
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187 // ----------------------------------------------------------------------------- |
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188 // |
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189 TInt CMCCCodecG711::SetPayloadType( TUint8 aType ) |
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190 { |
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191 if ( KPcmuPayloadType != aType && KPcmaPayloadType != aType ) |
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192 { |
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193 return KErrNotSupported; |
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194 } |
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195 else |
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196 { |
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197 iPayloadType = aType; |
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198 } |
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199 |
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200 return KErrNone; |
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201 } |
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202 |
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203 // ----------------------------------------------------------------------------- |
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204 // CMCCCodecG711::SetPTime |
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205 // Set PTime |
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206 // ----------------------------------------------------------------------------- |
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207 // |
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208 TInt CMCCCodecG711::SetPTime( TUint aPTime ) |
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209 { |
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210 if ( aPTime && ( KMinPtime <= aPTime ) && ( aPTime <= iMaxPTime ) && |
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211 ( KMaxPtime >= aPTime ) && (( aPTime % KMinPtime ) == 0 )) |
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212 { |
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213 iPTime = aPTime; |
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214 return KErrNone; |
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215 } |
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216 else |
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217 { |
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218 return KErrArgument; |
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219 } |
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220 } |
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221 |
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222 // ----------------------------------------------------------------------------- |
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223 // CMCCCodecG711::SetMaxPTime |
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224 // Set Max PTime |
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225 // ----------------------------------------------------------------------------- |
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226 // |
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227 TInt CMCCCodecG711::SetMaxPTime( TUint aMaxPTime ) |
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228 { |
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229 if ( aMaxPTime && ( iPTime <= aMaxPTime ) && ( KMinPtime <= aMaxPTime ) && |
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230 ( KMaxPtime >= aMaxPTime ) && (( aMaxPTime % KMinPtime ) == 0 )) |
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231 { |
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232 iMaxPTime = aMaxPTime; |
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233 return KErrNone; |
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234 } |
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235 else |
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236 { |
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237 return KErrArgument; |
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238 } |
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239 } |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // CMCCCodecG711::SetCodecMode |
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243 // Set Codec Mode |
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244 // ----------------------------------------------------------------------------- |
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245 // |
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246 TInt CMCCCodecG711::SetCodecMode( TCodecMode aCodecMode ) |
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247 { |
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248 if ( EPCMU == aCodecMode ) |
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249 { |
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250 iCodecMode = aCodecMode; |
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251 iSdpName.Copy( KPCMUSdpName ); |
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252 SetPayloadType( KG711PayloadTypePCMU ); |
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253 return KErrNone; |
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254 } |
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255 else if ( EPCMA == aCodecMode ) |
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256 { |
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257 iCodecMode = aCodecMode; |
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258 iSdpName.Copy( KPCMASdpName ); |
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259 SetPayloadType( KG711PayloadTypePCMA ); |
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260 return KErrNone; |
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261 } |
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262 else |
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263 { |
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264 return KErrNotSupported; |
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265 } |
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266 } |
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267 |
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268 // ----------------------------------------------------------------------------- |
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269 // CMCCCodecG711::CloneDefaultsL |
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270 // Make a default setting clone from this G.711 codec |
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271 // ----------------------------------------------------------------------------- |
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272 // |
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273 CMccCodecInformation* CMCCCodecG711::CloneDefaultsL() |
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274 { |
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275 CMccCodecInformation* codec = CMCCCodecG711::NewL(); |
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276 CleanupStack::PushL( codec ); |
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277 |
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278 if ( 0 == this->SdpName().CompareF( KPCMASdpName ) ) |
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279 { |
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280 User::LeaveIfError( codec->SetCodecMode( EPCMA ) ); |
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281 } |
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282 else |
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283 { |
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284 User::LeaveIfError( codec->SetCodecMode( EPCMU ) ); |
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285 } |
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286 |
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287 CleanupStack::Pop( codec ); |
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288 return codec; |
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289 } |
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290 |
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291 // ----------------------------------------------------------------------------- |
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292 // CMCCCodecG711::CloneDetailedL |
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293 // Make a detailed clone from this G.711 codec |
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294 // ----------------------------------------------------------------------------- |
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295 // |
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296 CMccCodecInformation* CMCCCodecG711::CloneDetailedL() |
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297 { |
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298 CMCCCodecG711* newCodec = CMCCCodecG711::NewL(); |
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299 CleanupStack::PushL( newCodec ); |
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300 newCodec->SetBitrate( this->Bitrate() ); |
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301 newCodec->SetCodecMode( this->CodecMode() ); |
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302 newCodec->SetMaxPTime( this->MaxPTime() ); |
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303 newCodec->SetPayloadType( this->PayloadType() ); |
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304 newCodec->SetPTime( this->PTime() ); |
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305 newCodec->SetSamplingFreq( this->SamplingFreq() ); |
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306 newCodec->SetSdpName( this->SdpName() ); |
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307 CleanupStack::Pop( newCodec ); |
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308 return newCodec; |
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309 } |
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310 |
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311 // ----------------------------------------------------------------------------- |
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312 // CMCCCodecG711::RequireSignalling |
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313 // ----------------------------------------------------------------------------- |
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314 // |
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315 TBool CMCCCodecG711::RequireSignalling( |
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316 const CMccCodecInformation& aCandidate ) const |
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317 { |
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318 __INTERFACE( "CMCCCodecG711::RequireSignalling" ) |
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319 TBool ret = EFalse; |
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320 |
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321 if ( iPTime != aCandidate.PTime() ) |
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322 { |
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323 __INTERFACE( "CMCCCodecG711::RequireSignalling, PTime changed" ) |
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324 ret = ETrue; |
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325 } |
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326 |
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327 if ( iMaxPTime != aCandidate.MaxPTime() ) |
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328 { |
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329 __INTERFACE( "CMCCCodecG711::RequireSignalling, MaxPTime changed" ) |
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330 ret = ETrue; |
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331 } |
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332 |
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333 if ( iPayloadType != aCandidate.PayloadType() ) |
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334 { |
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335 __INTERFACE( "CMCCCodecG711::RequireSignalling, PayloadType changed" ) |
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336 ret = ETrue; |
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337 } |
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338 |
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339 __INTERFACE_INT1( "CMCCCodecG711::RequireSignalling, exit with", ret ) |
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340 return ret; |
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341 } |
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342 |
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343 // ----------------------------------------------------------------------------- |
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344 // CMCPG711Codec::SetComfortNoiseGeneration |
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345 // ----------------------------------------------------------------------------- |
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346 // |
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347 TInt CMCCCodecG711::SetComfortNoiseGeneration( TUint8 aComfortNoisePT ) |
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348 { |
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349 iComfortNoiseGenerationPt = aComfortNoisePT; |
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350 return KErrNone; |
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351 } |
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352 |
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353 // ----------------------------------------------------------------------------- |
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354 // CMCCCodecG711::SetAllowedBitrates |
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355 // ----------------------------------------------------------------------------- |
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356 // |
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357 TInt CMCCCodecG711::SetAllowedBitrates( TUint /*aBitrateMask*/ ) |
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358 { |
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359 return KErrNone; |
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360 } |
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361 |
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362 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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363 |
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364 // End of File |