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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 // INCLUDE FILES |
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22 |
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23 |
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24 #include <sdpdocument.h> |
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25 |
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26 #include <sdpcodecstringconstants.h> |
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27 #include <sdpcodecstringpool.h> |
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28 #include <sdpmediafield.h> |
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29 #include <sdpattributefield.h> |
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30 #include <sdprtpmapvalue.h> |
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31 #include <sdpfmtattributefield.h> |
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32 #include <mmcccodecinformation.h> |
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33 |
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34 #include "mcesdpcodec.h" |
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35 #include "mcecomcodec.h" |
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36 #include "mcemmlogs.h" |
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37 |
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38 |
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39 const TChar KMceRealPoint = '.'; |
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40 |
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41 |
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42 // ================= MEMBER FUNCTIONS ======================= |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // CMceSdpCodec::CMceSdpCodec |
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46 // ----------------------------------------------------------------------------- |
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47 CMceSdpCodec::CMceSdpCodec( RStringF aMedia ) |
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48 : iMedia( aMedia ) |
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49 { |
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50 } |
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51 |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // CMceSdpCodec::~CMceSdpCodec |
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55 // ----------------------------------------------------------------------------- |
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56 CMceSdpCodec::~CMceSdpCodec() |
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57 { |
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58 iMedia.Close(); |
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59 delete iCapabilities; |
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60 iStringTable = NULL; |
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61 iCapabilitiesPT.Close(); |
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62 } |
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63 |
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64 // --------------------------------------------------------- |
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65 // CMceSdpCodec::ConstructL |
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66 // --------------------------------------------------------- |
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67 void CMceSdpCodec::ConstructL() |
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68 { |
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69 |
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70 iStringPool = SdpCodecStringPool::StringPoolL(); |
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71 iStringTable = &SdpCodecStringPool::StringTableL(); |
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72 |
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73 iCapabilities = new (ELeave) CDesC8ArrayFlat( KMceArrayGranularity ); |
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74 iCapabilitiesPT.Reset(); |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CMceSdpCodec::Media |
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79 // ----------------------------------------------------------------------------- |
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80 RStringF CMceSdpCodec::Media() |
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81 { |
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82 return iMedia; |
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83 } |
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84 |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CMceSdpCodec::Decodes |
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88 // ----------------------------------------------------------------------------- |
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89 TBool CMceSdpCodec::Decodes( const CSdpMediaField& aMedia ) const |
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90 { |
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91 return iMedia == aMedia.Media(); |
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92 } |
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93 |
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94 // ----------------------------------------------------------------------------- |
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95 // CMceSdpCodec::AddCapabilityL |
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96 // ----------------------------------------------------------------------------- |
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97 void CMceSdpCodec::AddCapabilityL( const TDesC8& aCapability ) |
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98 { |
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99 iCapabilities->AppendL( aCapability ); |
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100 } |
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101 |
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102 // ----------------------------------------------------------------------------- |
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103 // CMceSdpCodec::AddCapabilityPayloadTypeL |
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104 // ----------------------------------------------------------------------------- |
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105 void CMceSdpCodec::AddCapabilityPayloadTypeL( const TUint aPayloadType ) |
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106 { |
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107 iCapabilitiesPT.AppendL(aPayloadType); |
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108 } |
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109 |
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110 // ----------------------------------------------------------------------------- |
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111 // CMceSdpCodec::IsSupported |
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112 // ----------------------------------------------------------------------------- |
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113 TBool CMceSdpCodec::IsSupported( const TDesC8& aCapability ) const |
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114 { |
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115 TBool isSupported = EFalse; |
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116 TInt index = 0; |
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117 |
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118 while( !isSupported && index < iCapabilities->Count() ) |
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119 { |
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120 isSupported = !aCapability.CompareF( iCapabilities->MdcaPoint( index ++ ) ); |
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121 } |
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122 |
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123 return isSupported; |
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124 |
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125 } |
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126 |
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127 // ----------------------------------------------------------------------------- |
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128 // CMceSdpCodec::IsPayloadTypeSupported |
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129 // ----------------------------------------------------------------------------- |
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130 TBool CMceSdpCodec::IsPayloadTypeSupported( const TDesC8& aCapability, const TUint aPayloadType ) const |
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131 { |
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132 TBool isSupported = EFalse; |
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133 TInt index = 0; |
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134 |
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135 while( !isSupported && index < iCapabilities->Count() ) |
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136 { |
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137 if ( !aCapability.CompareF( iCapabilities->MdcaPoint( index ) ) && index < iCapabilitiesPT.Count()) |
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138 { |
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139 if (iCapabilitiesPT [ index ] >= KMinDynamicPT || iCapabilitiesPT [ index ] == aPayloadType) |
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140 { |
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141 isSupported = ETrue; |
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142 } |
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143 } |
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144 index ++; |
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145 } |
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146 |
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147 return isSupported; |
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148 |
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149 } |
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150 |
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151 // ----------------------------------------------------------------------------- |
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152 // CMceSdpCodec::Direction |
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153 // ----------------------------------------------------------------------------- |
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154 // |
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155 TInt CMceSdpCodec::Direction( |
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156 CSdpMediaField& aMedia, |
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157 RPointerArray<CSdpAttributeField>& aSessionAttributes ) const |
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158 { |
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159 |
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160 TInt direction = KErrNotFound; |
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161 TInt index = 0; |
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162 |
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163 // look for the direction attribute, go through all attribute fields. |
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164 while( direction == KErrNotFound && index < aSessionAttributes.Count() ) |
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165 { |
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166 RStringF attribute = aSessionAttributes[index++]->Attribute(); |
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167 |
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168 if ( attribute == SDP_STRING( SdpCodecStringConstants::EAttributeSendonly ) || |
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169 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeRecvonly ) || |
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170 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeInactive ) || |
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171 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeSendrecv ) ) |
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172 { |
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173 // downlink |
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174 direction = attribute.Index( *iStringTable ); |
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175 } |
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176 } |
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177 |
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178 if ( direction == KErrNotFound ) |
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179 { |
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180 index = 0; |
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181 |
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182 RPointerArray<CSdpAttributeField>& attrfields = aMedia.AttributeFields(); |
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183 // look for the direction attribute, go through all attribute fields. if not |
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184 // found then use the default sendrcv |
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185 while( direction == KErrNotFound && index < attrfields.Count() ) |
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186 { |
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187 |
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188 RStringF attribute = attrfields[index++]->Attribute(); |
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189 if ( attribute == SDP_STRING( SdpCodecStringConstants::EAttributeSendonly ) || |
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190 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeRecvonly ) || |
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191 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeInactive ) || |
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192 attribute == SDP_STRING( SdpCodecStringConstants::EAttributeSendrecv ) ) |
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193 { |
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194 // downlink |
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195 direction = attribute.Index( *iStringTable ); |
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196 } |
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197 |
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198 } |
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199 } |
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200 |
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201 return direction; |
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202 |
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203 } |
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204 |
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205 |
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206 |
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207 |
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208 // ----------------------------------------------------------------------------- |
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209 // CMceSdpCodec::PrepareForEncodeL |
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210 // ----------------------------------------------------------------------------- |
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211 // |
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212 void CMceSdpCodec::PrepareForEncodeL( CMceComMediaStream& /*aStream*/, |
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213 CSdpMediaField& aMediaLine ) |
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214 { |
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215 __ASSERT_ALWAYS( aMediaLine.IsValid(), |
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216 User::Leave( KErrArgument ) ); |
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217 CleanAttributes( aMediaLine ); |
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218 if( aMediaLine.Key() ) |
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219 { |
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220 aMediaLine.SetKey(NULL); |
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221 } |
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222 } |
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223 |
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224 |
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225 |
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226 // ----------------------------------------------------------------------------- |
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227 // CMceSdpCodec::EncodeRtpMapFieldsL |
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228 // ----------------------------------------------------------------------------- |
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229 // |
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230 CSdpFmtAttributeField* CMceSdpCodec::EncodeRtpMapFieldsL( |
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231 const TUint8 aPayloadType, |
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232 const TDesC8& aEncodingName, |
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233 const TUint aClockRate, |
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234 const TDesC8& aEncodingParam ) const |
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235 { |
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236 MCEMM_DEBUG("CMceSdpCodec::EncodeRtpMapFieldsL(), Entry "); |
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237 |
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238 MCE_DEFINE_DECSTR( clockrate, aClockRate ); |
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239 MCE_DEFINE_DECSTR( payload, aPayloadType ); |
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240 RStringF rtpmapStr = SDP_STRING( SdpCodecStringConstants::EAttributeRtpmap ); |
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241 |
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242 TSdpRtpmapValue rtpmapValue( aEncodingName, |
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243 clockrate, |
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244 aEncodingParam ); |
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245 |
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246 HBufC8* rtpmapBuf = rtpmapValue.EncodeL(); |
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247 CleanupStack::PushL( rtpmapBuf ); |
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248 |
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249 |
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250 CSdpFmtAttributeField* rtpmapAttribute = |
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251 CSdpFmtAttributeField::NewL( rtpmapStr, payload, *rtpmapBuf ); |
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252 CleanupStack::PopAndDestroy( rtpmapBuf ); |
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253 |
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254 MCEMM_DEBUG("CMceSdpCodec::EncodeRtpMapFieldsL(), Exit "); |
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255 |
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256 return rtpmapAttribute; |
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257 } |
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258 |
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259 |
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260 // ----------------------------------------------------------------------------- |
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261 // CMceSdpCodec::FindAttribute |
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262 // ----------------------------------------------------------------------------- |
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263 // |
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264 CSdpAttributeField* CMceSdpCodec::FindAttribute( TInt aAttribute, |
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265 CSdpMediaField& aMediaLine ) const |
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266 { |
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267 CSdpAttributeField* attributeField = NULL; |
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268 RPointerArray<CSdpAttributeField>& attributeFields = |
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269 aMediaLine.AttributeFields(); |
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270 TInt index = 0; |
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271 while( !attributeField && index < attributeFields.Count() ) |
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272 { |
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273 attributeField = attributeFields[ index++ ]; |
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274 RStringF attribute = attributeField->Attribute(); |
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275 attributeField = |
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276 attribute == SDP_STRING( aAttribute ) ? attributeField : NULL; |
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277 } |
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278 |
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279 return attributeField; |
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280 |
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281 } |
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282 |
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283 |
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284 // ----------------------------------------------------------------------------- |
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285 // CMceSdpCodec::ConvertDesToUintL |
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286 // ----------------------------------------------------------------------------- |
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287 // |
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288 TUint CMceSdpCodec::ConvertDesToUintL( const TDesC8& aConv ) |
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289 { |
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290 TUint covertedUint = 0; |
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291 TLex8 lexConv( aConv ); |
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292 User::LeaveIfError ( lexConv.Val( covertedUint, EDecimal ) ); |
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293 return covertedUint; |
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294 } |
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295 |
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296 // ----------------------------------------------------------------------------- |
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297 // CMceSdpCodec::ConvertDesToIntL |
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298 // ----------------------------------------------------------------------------- |
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299 // |
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300 TInt CMceSdpCodec::ConvertDesToIntL( const TDesC8& aConv ) |
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301 { |
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302 TInt covertedInt = 0; |
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303 TLex8 lexConv( aConv ); |
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304 User::LeaveIfError ( lexConv.Val( covertedInt ) ); |
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305 return covertedInt; |
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306 } |
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307 |
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308 |
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309 // ----------------------------------------------------------------------------- |
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310 // CMceSdpCodec::ConvertTRealToDesLC |
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311 // ----------------------------------------------------------------------------- |
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312 // |
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313 HBufC8* CMceSdpCodec::ConvertTRealToDesLC( const TReal& aConv ) |
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314 { |
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315 const TInt KMceMaxTRealLen = 20; |
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316 HBufC8* buf = HBufC8::NewLC( KMceMaxTRealLen ); |
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317 TPtr8 ptr = buf->Des(); |
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318 TRealFormat format; |
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319 format.iType = KRealFormatGeneral; |
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320 format.iWidth = KMceMaxTRealLen; |
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321 format.iPoint = KMceRealPoint; |
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322 ptr.Num( aConv, format ); |
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323 return buf; |
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324 } |
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325 |
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326 // ----------------------------------------------------------------------------- |
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327 // CMceSdpCodec::ConvertDesToReal |
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328 // ----------------------------------------------------------------------------- |
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329 // |
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330 TReal CMceSdpCodec::ConvertDesToRealL( const TDesC8& aConv ) |
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331 { |
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332 TReal val; |
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333 TLex8 lexer( aConv ); |
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334 User::LeaveIfError( lexer.Val( val, KMceRealPoint ) ); |
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335 return val; |
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336 } |
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337 |
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338 |