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1 /* |
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2 * Copyright (c) 2004-2008 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: PayloadFormat component capable to read RTP payload containing |
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15 * ILBC audio. |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 |
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22 // INCLUDE FILES |
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23 #include "ilbcpayloadformatread.h" |
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24 #include "mccrtpdatasource.h" |
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25 #include "ilbcpayloadformatutil.h" |
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26 #include "mccinternaldef.h" |
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27 #include "mccdef.h" |
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28 #include "mccredpayloadread.h" |
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29 |
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30 // MACROS |
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31 #ifdef _DEBUG |
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32 #define TRACE_ILBC_PAYLOAD_FORMAT_READ |
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33 #endif |
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34 |
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35 |
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36 // FORWARD DECLARATIONS |
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37 |
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38 // ============================= LOCAL FUNCTIONS =============================== |
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39 |
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40 // ============================ MEMBER FUNCTIONS =============================== |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 // CIlbcPayloadFormatRead::CIlbcPayloadFormatRead |
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44 // C++ default constructor can NOT contain any code, that |
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45 // might leave. |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 CIlbcPayloadFormatRead::CIlbcPayloadFormatRead () : |
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49 iMediaId( KUidMediaTypeAudio ) |
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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 // ----------------------------------------------------------------------------- |
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55 // CIlbcPayloadFormatRead::ConstructL |
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56 // Symbian 2nd phase constructor can leave. |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 void CIlbcPayloadFormatRead::ConstructL( MDataSource* aSource ) |
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60 { |
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61 __ASSERT_ALWAYS( aSource, User::Leave( KErrArgument ) ); |
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62 |
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63 iClip = aSource; |
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64 iBufferToReadExists = EFalse; |
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65 |
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66 iFourCC.Set( KMccFourCCIdILBC ); |
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67 |
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68 // Initialize decoding state machine |
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69 iStateMachine = CFormatDecodeStateMachine::NewL( this ); |
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70 iStateMachine->ChangeState( EDecodeIdle ); |
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71 |
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72 iCurrentBuffer = EBufferOne; |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // CIlbcPayloadFormatRead::NewL |
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77 // Two-phased constructor. |
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78 // ----------------------------------------------------------------------------- |
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79 // |
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80 CIlbcPayloadFormatRead* CIlbcPayloadFormatRead::NewL( MDataSource* aSource ) |
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81 { |
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82 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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83 RDebug::Print( _L("CIlbcPayloadFormatRead::NewL") ); |
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84 #endif |
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85 |
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86 __ASSERT_ALWAYS( aSource, User::Leave( KErrArgument ) ); |
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87 |
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88 CIlbcPayloadFormatRead* self = new ( ELeave ) CIlbcPayloadFormatRead(); |
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89 CleanupStack::PushL( self ); |
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90 self->ConstructL( aSource ); |
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91 CleanupStack::Pop( self ); |
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92 return self; |
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93 }; |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CIlbcPayloadFormatRead::~CIlbcPayloadFormatRead() |
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97 // Destructor. |
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98 // ----------------------------------------------------------------------------- |
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99 // |
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100 CIlbcPayloadFormatRead::~CIlbcPayloadFormatRead() |
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101 { |
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102 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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103 RDebug::Print( _L("CIlbcPayloadFormatRead::~CIlbcPayloadFormatRead") ); |
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104 #endif |
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105 |
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106 delete iFrameBufferOne; |
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107 delete iFrameBufferTwo; |
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108 if ( iSourceBufOwnership ) |
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109 { |
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110 delete iSourceBuffer; |
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111 } |
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112 else |
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113 { |
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114 iSourceBuffer = NULL; |
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115 } |
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116 |
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117 delete iStateMachine; |
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118 iClip = NULL; |
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119 iFrameArray.Close(); |
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120 }; |
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121 |
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122 |
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123 // ----------------------------------------------------------------------------- |
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124 // CIlbcPayloadFormatRead::SendDataToSinkL |
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125 // Send full frame buffer to DataPath. |
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126 // ----------------------------------------------------------------------------- |
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127 // |
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128 void CIlbcPayloadFormatRead::SendDataToSinkL() |
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129 { |
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130 if ( iCurrentBuffer == EBufferOne ) |
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131 { |
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132 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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133 RDebug::Print( _L( "CIlbcPayloadFormatRead::SendDataToSinkL - BufferOne") ); |
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134 #endif |
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135 |
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136 iDataPath->BufferFilledL( iFrameBufferOne ); |
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137 iCurrentBuffer = EBufferTwo; |
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138 if ( iBufferToReadExists && !iFrameBufferOne->LastBuffer() ) |
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139 { |
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140 // More payload buffer is ready |
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141 iStateMachine->ChangeState( ESourceDataReady ); |
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142 } |
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143 } |
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144 else |
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145 { |
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146 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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147 RDebug::Print( _L( "CIlbcPayloadFormatRead::SendDataToSinkL - BufferTwo") ); |
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148 #endif |
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149 |
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150 iDataPath->BufferFilledL( iFrameBufferTwo ); |
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151 iCurrentBuffer = EBufferOne; |
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152 if ( iBufferToReadExists && !iFrameBufferTwo->LastBuffer() ) |
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153 { |
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154 // More payload buffer is ready |
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155 iStateMachine->ChangeState( ESourceDataReady ); |
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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 // ----------------------------------------------------------------------------- |
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161 // CIlbcPayloadFormatRead::FillSinkBuffer |
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162 // Fill SinkBuffer. |
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163 // ----------------------------------------------------------------------------- |
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164 // |
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165 void CIlbcPayloadFormatRead::FillSinkBufferL() |
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166 { |
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167 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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168 RDebug::Print( _L( "CIlbcPayloadFormatRead::FillSinkBuffer" ) ); |
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169 #endif |
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170 |
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171 CMMFDataBuffer* curFrameBuffer; |
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172 if ( EBufferOne == iCurrentBuffer ) |
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173 { |
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174 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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175 RDebug::Print( _L( "IlbcPayloadFormatRead: Filling EBufferOne reqsize: %d"), |
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176 iFrameBufferOne->RequestSize() ); |
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177 #endif |
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178 |
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179 curFrameBuffer = iFrameBufferOne; |
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180 } |
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181 else |
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182 { |
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183 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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184 RDebug::Print( _L("IlbcPayloadFormatRead: Filling EBufferTwo reqsize: %d"), |
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185 iFrameBufferTwo->RequestSize() ); |
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186 #endif |
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187 |
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188 curFrameBuffer = iFrameBufferTwo; |
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189 } |
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190 |
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191 TDes8& dataDes = curFrameBuffer->Data(); |
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192 |
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193 dataDes.Zero(); |
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194 dataDes.SetLength( KiLBCNumOfHeaderBytes ); |
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195 |
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196 // Put next frame decoded from RTP payload to the framebuffer |
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197 iBufferToReadExists = GetNextFrame( dataDes ); |
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198 |
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199 if ( iCnFrame ) |
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200 { |
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201 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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202 RDebug::Print( _L ("CIlbcPayloadFormatRead::FillSinkBuffer - ADD CNOISE FRAME HEADER") ); |
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203 #endif |
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204 dataDes[0] = KCNoiseFrameHeaderByte; |
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205 dataDes[1] = 0; |
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206 } |
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207 else |
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208 { |
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209 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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210 RDebug::Print( _L ("CIlbcPayloadFormatRead::FillSinkBuffer - ADD AUDIO FRAME HEADER") ); |
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211 #endif |
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212 dataDes[0] = KAudioFrameHeaderByte; |
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213 dataDes[1] = 0; |
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214 } |
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215 |
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216 curFrameBuffer->SetFrameNumber( iRecvHeader.iTimestamp + ( ( iFrameIndex - 1 ) |
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217 * TUint( iCInfo.iHwFrameTime * KiLBCSampleRate * 0.001 ) ) ); |
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218 |
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219 if ( KIlbcMode20msFrame == iCInfo.iCodecMode ) |
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220 { |
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221 dataDes.SetLength( KiLBCFrameSize20ms + KiLBCNumOfHeaderBytes ); |
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222 } |
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223 else if( KIlbcMode30msFrame == iCInfo.iCodecMode ) |
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224 { |
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225 dataDes.SetLength( KiLBCFrameSize30ms + KiLBCNumOfHeaderBytes ); |
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226 } |
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227 else |
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228 { |
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229 // Make PC-LINT happy |
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230 } |
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231 |
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232 curFrameBuffer->SetStatus( EFull ); |
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233 iStateMachine->ChangeState( EEmptyDataToSink ); |
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234 |
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235 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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236 RDebug::Print( _L ("CIlbcPayloadFormatRead::FillSinkBuffer - DONE") ); |
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237 #endif |
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238 } |
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239 |
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240 // ----------------------------------------------------------------------------- |
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241 // CIlbcPayloadFormatRead::FillSourceBufferL |
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242 // Send fill buffer request to RTP Data Source. |
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243 // ----------------------------------------------------------------------------- |
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244 // |
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245 void CIlbcPayloadFormatRead::FillSourceBufferL() |
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246 { |
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247 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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248 RDebug::Print ( _L("CIlbcPayloadFormatRead::FillSourceBufferL") ); |
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249 #endif |
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250 |
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251 // RtpSourceSink doesn't really need the Media Id. |
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252 iClip->FillBufferL( iSourceBuffer, this, iMediaId ); |
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253 } |
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254 |
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255 // ----------------------------------------------------------------------------- |
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256 // CIlbcPayloadFormatRead::SourcePrimeL |
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257 // Prime source. |
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258 // ----------------------------------------------------------------------------- |
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259 // |
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260 void CIlbcPayloadFormatRead::SourcePrimeL() |
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261 { |
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262 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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263 RDebug::Print (_L ("CIlbcPayloadFormatRead::SourcePrimeL()")); |
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264 #endif |
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265 |
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266 iClip->SourcePrimeL(); |
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267 } |
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268 |
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269 // ----------------------------------------------------------------------------- |
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270 // CIlbcPayloadFormatRead::SourcePlayL |
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271 // Start playing. |
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272 // ----------------------------------------------------------------------------- |
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273 // |
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274 void CIlbcPayloadFormatRead::SourcePlayL() |
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275 { |
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276 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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277 RDebug::Print (_L ("CIlbcPayloadFormatRead::SourcePlayL()")); |
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278 #endif |
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279 |
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280 iClip->SourcePlayL(); |
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281 } |
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282 |
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283 // ----------------------------------------------------------------------------- |
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284 // CIlbcPayloadFormatRead::SourcePauseL |
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285 // Pause source. |
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286 // ----------------------------------------------------------------------------- |
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287 // |
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288 void CIlbcPayloadFormatRead::SourcePauseL() |
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289 { |
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290 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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291 RDebug::Print( _L("CIlbcPayloadFormatRead::SourcePauseL") ); |
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292 #endif |
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293 |
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294 iStateMachine->Cancel(); |
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295 iStateMachine->ChangeState( EDecodeIdle ); |
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296 |
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297 iFrameBufferOne->SetLastBuffer( EFalse ); |
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298 iFrameBufferTwo->SetLastBuffer( EFalse ); |
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299 |
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300 iFrameBufferOne->SetStatus( EAvailable ); |
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301 iFrameBufferTwo->SetStatus( EAvailable ); |
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302 |
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303 iBufferToReadExists = EFalse; |
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304 iCurrentBuffer = EBufferOne; |
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305 |
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306 iClip->SourcePauseL(); |
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307 } |
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308 |
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309 // ----------------------------------------------------------------------------- |
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310 // CIlbcPayloadFormatRead::SourceStopL |
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311 // Stop source. |
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312 // ----------------------------------------------------------------------------- |
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313 // |
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314 void CIlbcPayloadFormatRead::SourceStopL() |
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315 { |
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316 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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317 RDebug::Print( _L("CIlbcPayloadFormatRead::SourceStopL") ); |
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318 #endif |
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319 |
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320 // DO NOT RESET PACKET COUNT BACK TO ZERO HERE |
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321 // UPPER LAYER MAY CALL LastDlPacketCount LATER |
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322 iStateMachine->Cancel(); |
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323 iStateMachine->ChangeState( EDecodeIdle ); |
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324 |
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325 iFrameBufferOne->SetLastBuffer( EFalse ); |
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326 iFrameBufferTwo->SetLastBuffer( EFalse ); |
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327 |
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328 iFrameBufferOne->SetStatus( EAvailable ); |
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329 iFrameBufferTwo->SetStatus( EAvailable ); |
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330 |
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331 iBufferToReadExists = EFalse; |
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332 iCurrentBuffer = EBufferOne; |
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333 |
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334 iClip->SourceStopL(); |
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335 } |
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336 |
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337 // ----------------------------------------------------------------------------- |
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338 // CIlbcPayloadFormatRead::BufferFilledL |
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339 // RTP data source has filled buffer. |
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340 // NOTE: Although redundancy is negotiated, sender may deside to send audio |
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341 // packets without redundancy (RFC2198, ch5). |
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342 // ----------------------------------------------------------------------------- |
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343 // |
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344 void CIlbcPayloadFormatRead::DataBufferFilledL( CMMFBuffer* aBuffer, |
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345 const TRtpRecvHeader& aRecvHeader ) |
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346 { |
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347 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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348 RDebug::Print (_L ("CIlbcPayloadFormatRead::DataBufferFilledL - TSTAMP: %u"), |
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349 aRecvHeader.iTimestamp ); |
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350 #endif |
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351 |
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352 __ASSERT_ALWAYS( aBuffer, User::Leave( KErrArgument ) ); |
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353 __ASSERT_ALWAYS( KUidMmfDataBuffer == aBuffer->Type(), |
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354 User::Leave( KErrNotSupported ) ); |
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355 __ASSERT_ALWAYS( iSourceBuffer == aBuffer, User::Leave( KErrArgument ) ); |
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356 |
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357 iRecvHeader = aRecvHeader; |
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358 if ( KComfortNoisePT == iRecvHeader.iPayloadType |
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359 || KOldComfortNoisePT == iRecvHeader.iPayloadType ) |
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360 { |
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361 iCnFrame = ETrue; |
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362 } |
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363 else |
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364 { |
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365 iCnFrame = EFalse; |
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366 } |
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367 |
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368 iNumOfFrames = DecodePayload( iSourceBuffer->Data() ); |
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369 |
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370 // Whenever BufferFilledL is called from RtpSourceSink |
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371 // Set the state machine to fillsinkbuffer |
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372 if ( iNumOfFrames ) |
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373 { |
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374 iBufferToReadExists = ETrue; |
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375 iSourceBuffer->SetFrameNumber( iRecvHeader.iTimestamp ); |
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376 iStateMachine->ChangeState( ESourceDataReady ); |
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377 } |
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378 else |
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379 { |
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380 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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381 RDebug::Print ( _L("CIlbcPayloadFormatRead::BufferFilledL, decode failed" ) ); |
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382 #endif |
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383 |
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384 FillSourceBufferL(); |
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385 } |
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386 } |
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387 |
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388 // ----------------------------------------------------------------------------- |
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389 // CIlbcPayloadFormatRead::SampleRate |
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390 // Returns samplerate. |
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391 // ----------------------------------------------------------------------------- |
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392 // |
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393 TUint CIlbcPayloadFormatRead::SampleRate() |
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394 { |
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395 return KiLBCSampleRate; |
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396 } |
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397 |
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398 // ----------------------------------------------------------------------------- |
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399 // CIlbcPayloadFormatRead::SetSampleRate |
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400 // Set samplerate. |
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401 // ----------------------------------------------------------------------------- |
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402 // |
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403 TInt CIlbcPayloadFormatRead::SetSampleRate( TUint aSampleRate ) |
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404 { |
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405 return ( KiLBCSampleRate == aSampleRate ) ? KErrNone : KErrNotSupported; |
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406 } |
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407 |
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408 // ----------------------------------------------------------------------------- |
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409 // CIlbcPayloadFormatRead::NumChannels |
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410 // Returns number of channels. |
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411 // ----------------------------------------------------------------------------- |
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412 // |
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413 TUint CIlbcPayloadFormatRead::NumChannels() |
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414 { |
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415 return KMono; |
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416 } |
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417 |
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418 // ----------------------------------------------------------------------------- |
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419 // CIlbcPayloadFormatRead::SourceThreadLogoff |
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420 // Logout the source thread. |
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421 // ----------------------------------------------------------------------------- |
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422 // |
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423 void CIlbcPayloadFormatRead::SourceThreadLogoff() |
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424 { |
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425 iClip->SourceThreadLogoff(); |
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426 } |
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427 |
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428 // ----------------------------------------------------------------------------- |
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429 // CIlbcPayloadFormatRead::NegotiateSourceL |
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430 // Negotiate Source. Not used. |
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431 // ----------------------------------------------------------------------------- |
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432 // |
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433 void CIlbcPayloadFormatRead::NegotiateSourceL( MDataSink& aDataSink ) |
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434 { |
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435 iSink = &aDataSink; |
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436 iClip->NegotiateSourceL( *this ); |
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437 } |
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438 |
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439 // ----------------------------------------------------------------------------- |
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440 // CIlbcPayloadFormatRead::SourceThreadLogon |
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441 // Logon the source thread. |
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442 // ----------------------------------------------------------------------------- |
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443 // |
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444 TInt CIlbcPayloadFormatRead::SourceThreadLogon( |
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445 MAsyncEventHandler& aEventHandler |
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446 ) |
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447 { |
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448 if ( iClip ) |
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449 { |
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450 iClip->SourceThreadLogon( aEventHandler ); |
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451 return KErrNone; |
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452 } |
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453 else |
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454 { |
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455 return KErrNotReady; |
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456 } |
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457 } |
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458 |
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459 // ----------------------------------------------------------------------------- |
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460 // CIlbcPayloadFormatRead::SetSourceDataTypeCode |
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461 // Sets source datatype fourCC code. |
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462 // ----------------------------------------------------------------------------- |
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463 // |
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464 TInt CIlbcPayloadFormatRead::SetSourceDataTypeCode( TFourCC aSourceFourCC, |
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465 TMediaId aMediaId ) |
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466 { |
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467 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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468 RDebug::Print (_L ("CIlbcPayloadFormatRead::SetSourceDataTypeCode()")); |
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469 #endif |
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470 |
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471 if ( KUidMediaTypeAudio != aMediaId.iMediaType ) |
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472 { |
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473 return KErrNotSupported; |
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474 } |
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475 |
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476 iFourCC = aSourceFourCC; |
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477 iMediaId = aMediaId; |
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478 |
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479 iClip->SetSourceDataTypeCode( iFourCC, aMediaId ); |
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480 |
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481 return KErrNone; |
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482 } |
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483 |
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484 // ----------------------------------------------------------------------------- |
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485 // CIlbcPayloadFormatRead::SourceDataTypeCode |
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486 // Returns the current datatype FourCC code. |
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487 // ----------------------------------------------------------------------------- |
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488 // |
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489 TFourCC CIlbcPayloadFormatRead::SourceDataTypeCode( TMediaId aMediaId ) |
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490 { |
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491 if ( KUidMediaTypeAudio == aMediaId.iMediaType ) |
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492 { |
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493 return iFourCC; |
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494 } |
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495 else |
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496 { |
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497 return TFourCC(); //defaults to 'NULL' fourCC |
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498 } |
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499 } |
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500 |
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501 // ----------------------------------------------------------------------------- |
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502 // CIlbcPayloadFormatRead::SinkDataTypeCode |
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503 // Returns the current datatype FourCC code. |
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504 // ----------------------------------------------------------------------------- |
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505 // |
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506 TFourCC CIlbcPayloadFormatRead::SinkDataTypeCode( TMediaId aMediaId ) |
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507 { |
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508 if ( KUidMediaTypeAudio == aMediaId.iMediaType ) |
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509 { |
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510 return iFourCC; |
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511 } |
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512 else |
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513 { |
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514 return TFourCC(); //defaults to 'NULL' fourCC |
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515 } |
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516 } |
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517 |
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518 // ----------------------------------------------------------------------------- |
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519 // CIlbcPayloadFormatRead::CreateSourceBufferL |
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520 // Create a source buffer for the given media and indicate in aReference |
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521 // if buffer is created. |
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522 // ----------------------------------------------------------------------------- |
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523 // |
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524 CMMFBuffer* CIlbcPayloadFormatRead::CreateSourceBufferL( TMediaId aMediaId, |
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525 TBool &aReference ) |
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526 { |
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527 if ( KUidMediaTypeAudio != aMediaId.iMediaType ) |
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528 { |
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529 User::Leave( KErrNotSupported ); |
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530 } |
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531 |
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532 // the source buffers belong to IlbcPayloadFormatRead, not to datapath |
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533 // reference should be set to ETrue and destroyed by IlbcPayloadFormatRead |
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534 // itself. |
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535 aReference = ETrue; |
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536 return iFrameBufferOne; |
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537 } |
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538 |
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539 // ----------------------------------------------------------------------------- |
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540 // CIlbcPayloadFormatRead::CreateSourceBufferL |
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541 // Create a source buffer for the given media, setting frame size to match |
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542 // the given sink buffer. |
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543 // ----------------------------------------------------------------------------- |
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544 // |
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545 CMMFBuffer* CIlbcPayloadFormatRead::CreateSourceBufferL(TMediaId aMediaId, |
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546 CMMFBuffer& /*aSinkBuffer*/, TBool& aReference) |
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547 { |
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548 if ( KUidMediaTypeAudio != aMediaId.iMediaType ) |
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549 { |
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550 User::Leave( KErrNotSupported ); |
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551 } |
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552 |
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553 return CreateSourceBufferL( aMediaId, aReference ); |
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554 } |
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555 |
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556 // ----------------------------------------------------------------------------- |
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557 // CIlbcPayloadFormatRead::FillBufferL |
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558 // Fill Buffer. |
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559 // ----------------------------------------------------------------------------- |
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560 // |
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561 void CIlbcPayloadFormatRead::FillBufferL( CMMFBuffer* aBuffer, |
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562 MDataSink* aConsumer, TMediaId aMediaId ) |
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563 { |
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564 if ( !aBuffer ) |
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565 { |
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566 User::Leave( KErrGeneral ); |
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567 } |
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568 |
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569 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
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570 RDebug::Print( _L("CIlbcPayloadFormatRead::FillBufferL aBuffer 0x%x length %d bytes"), |
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571 aBuffer, aBuffer->BufferSize() ); |
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572 #endif |
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573 |
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574 if ( KUidMediaTypeAudio != aMediaId.iMediaType ) |
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575 { |
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576 User::Leave( KErrNotSupported ); |
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577 } |
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578 |
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579 if ( KUidMmfDataBuffer != aBuffer->Type() ) |
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580 { |
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581 User::Leave( KErrNotSupported ); |
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582 } |
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583 |
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584 iDataPath = aConsumer; |
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585 |
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586 // aBuffer is a reference to those frame buffers that |
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587 // IlbcPayloadFormatRead owns |
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588 aBuffer->SetLastBuffer( EFalse ); |
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589 |
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590 if ( EBufferOne == iCurrentBuffer ) |
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591 { |
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592 iFrameBufferTwo->SetStatus( EAvailable ); |
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593 } |
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594 else |
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595 { |
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596 iFrameBufferOne->SetStatus( EAvailable ); |
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597 } |
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598 |
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599 if ( iBufferToReadExists ) |
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600 { |
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601 // All decoded frame are not passed to the datapath |
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602 iStateMachine->ChangeState( ESourceDataReady ); |
|
603 } |
|
604 else |
|
605 { |
|
606 // Time to ask more payload from datasource |
|
607 FillSourceBufferL(); |
|
608 } |
|
609 } |
|
610 |
|
611 // ----------------------------------------------------------------------------- |
|
612 // CIlbcPayloadFormatRead::Streams |
|
613 // Return number of audio streams for the given media. |
|
614 // ----------------------------------------------------------------------------- |
|
615 // |
|
616 TUint CIlbcPayloadFormatRead::Streams( TUid aMediaType ) const |
|
617 { |
|
618 // Need to check aMediaType for audio |
|
619 if ( KUidMediaTypeAudio == aMediaType ) |
|
620 { |
|
621 return 1; |
|
622 } |
|
623 else |
|
624 { |
|
625 return 0; |
|
626 } |
|
627 } |
|
628 |
|
629 // ----------------------------------------------------------------------------- |
|
630 // CIlbcPayloadFormatRead::FrameTimeInterval |
|
631 // Return the frame time interval for the given media. |
|
632 // ----------------------------------------------------------------------------- |
|
633 // |
|
634 TTimeIntervalMicroSeconds CIlbcPayloadFormatRead::FrameTimeInterval( |
|
635 TMediaId aMediaId ) const |
|
636 { |
|
637 if ( KUidMediaTypeAudio == aMediaId.iMediaType ) |
|
638 { |
|
639 return iFrameTimeInterval; |
|
640 } |
|
641 else |
|
642 { |
|
643 return TTimeIntervalMicroSeconds( TInt64( 0 ) ); |
|
644 } |
|
645 } |
|
646 |
|
647 // ----------------------------------------------------------------------------- |
|
648 // CIlbcPayloadFormatRead::Duration |
|
649 // Return the frame time interval for the given media |
|
650 // NOT SUPPORTED |
|
651 // ----------------------------------------------------------------------------- |
|
652 // |
|
653 TTimeIntervalMicroSeconds CIlbcPayloadFormatRead::Duration( |
|
654 TMediaId /*aMediaType*/) const |
|
655 { |
|
656 return TTimeIntervalMicroSeconds( TInt64( 0 ) ); |
|
657 } |
|
658 |
|
659 // ----------------------------------------------------------------------------- |
|
660 // CIlbcPayloadFormatRead::DecodePayload |
|
661 // Decodes all audio frames from the received RTP payload buffer. Decoded |
|
662 // audio frames are saved to the internal array so that audio frames can be |
|
663 // requested one at a time with GetNextFrame() -method. |
|
664 // No assumption about frame count in RTP packet is done. |
|
665 // ----------------------------------------------------------------------------- |
|
666 // |
|
667 TInt CIlbcPayloadFormatRead::DecodePayload( const TDesC8& aSourceBuffer ) |
|
668 { |
|
669 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
670 RDebug::Print( _L("CIlbcPayloadFormatRead::DecodePayload Src Size: %d" ), |
|
671 aSourceBuffer.Size() ); |
|
672 #endif |
|
673 |
|
674 iFrameIndex = 0; |
|
675 |
|
676 const TUint8* framePtr = aSourceBuffer.Ptr(); |
|
677 const TUint payloadSize( aSourceBuffer.Size() ); |
|
678 const TUint8* endPtr = aSourceBuffer.Ptr() + payloadSize; |
|
679 |
|
680 // Calculate parameters for frame ripping |
|
681 TInt frames( 0 ); |
|
682 TUint frameSize( 0 ); |
|
683 |
|
684 // Frames of different modes MUST NOT be included within the same payload |
|
685 frameSize = payloadSize % KiLBCFrameSize20ms ? KiLBCFrameSize30ms : KiLBCFrameSize20ms; |
|
686 frames = payloadSize / frameSize; |
|
687 |
|
688 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
689 RDebug::Print( _L("CILBCPayloadFormatRead::DecodePayload framesize: %d, frames: %d" ), |
|
690 frameSize, frames ); |
|
691 #endif |
|
692 |
|
693 // Construct pointers to frames in payload |
|
694 while ( frames-- ) |
|
695 { |
|
696 TPtr8 bufPtr( const_cast<TUint8*>(framePtr), frameSize, frameSize ); |
|
697 iFrameArray.Append( bufPtr ); |
|
698 |
|
699 framePtr += frameSize; |
|
700 |
|
701 if ( framePtr >= endPtr ) |
|
702 { |
|
703 frames = 0; |
|
704 } |
|
705 } |
|
706 |
|
707 return iFrameArray.Count(); |
|
708 } |
|
709 |
|
710 // ----------------------------------------------------------------------------- |
|
711 // CIlbcPayloadFormatRead::GetNextFrameL |
|
712 // Passes next audio frame decoded with DecodePayload(). Return ETrue if decoded |
|
713 // frames are remaining. |
|
714 // ----------------------------------------------------------------------------- |
|
715 // |
|
716 TBool CIlbcPayloadFormatRead::GetNextFrame( TDes8& aToBuffer ) |
|
717 { |
|
718 iFrameIndex++; |
|
719 |
|
720 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
721 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame - FrameCount: %d"), |
|
722 iFrameArray.Count() ); |
|
723 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame - FrameIndex: %d"), |
|
724 iFrameIndex ); |
|
725 #endif |
|
726 |
|
727 const TInt frmCount = iFrameArray.Count(); |
|
728 const TInt toMax = aToBuffer.MaxLength(); |
|
729 if ( iFrameIndex < frmCount && |
|
730 ( iFrameArray[iFrameIndex - 1].MaxLength() <= toMax ) ) |
|
731 { |
|
732 aToBuffer.Append( iFrameArray[iFrameIndex - 1] ); |
|
733 return ETrue; |
|
734 } |
|
735 else if ( iFrameIndex == frmCount && |
|
736 ( iFrameArray[iFrameIndex - 1].MaxLength() <= toMax ) ) |
|
737 { |
|
738 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
739 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame SRC_LEN: %d"), |
|
740 iFrameArray[iFrameIndex - 1].Length() ); |
|
741 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame SRC_MAX: %d"), |
|
742 iFrameArray[iFrameIndex - 1].MaxLength() ); |
|
743 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame DEST_LEN: %d"), |
|
744 aToBuffer.Length() ); |
|
745 RDebug::Print( _L("CILBCPayloadFormatRead::GetNextFrame DEST_MAX: %d"), |
|
746 aToBuffer.MaxLength() ); |
|
747 #endif |
|
748 |
|
749 aToBuffer.Append( iFrameArray[iFrameIndex - 1] ); |
|
750 iFrameArray.Reset(); |
|
751 return EFalse; |
|
752 } |
|
753 else |
|
754 { |
|
755 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
756 RDebug::Print( _L ( "CILBCPayloadFormatRead::GetNextFrame FALSE" )); |
|
757 #endif |
|
758 |
|
759 iFrameArray.Reset(); |
|
760 return EFalse; |
|
761 } |
|
762 } |
|
763 |
|
764 // ----------------------------------------------------------------------------- |
|
765 // CIlbcPayloadFormatRead::ConfigurePayloadFormatL |
|
766 // Configure payload decoding parameters. |
|
767 // ----------------------------------------------------------------------------- |
|
768 // |
|
769 void CIlbcPayloadFormatRead::ConfigurePayloadFormatL( |
|
770 const TDesC8& aConfigParams ) |
|
771 { |
|
772 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
773 RDebug::Print( _L("CIlbcPayloadFormatRead::ConfigurePayloadFormatL IN") ); |
|
774 #endif |
|
775 |
|
776 __ASSERT_ALWAYS( aConfigParams.Size() == sizeof( TMccCodecInfo ), |
|
777 User::Leave( KErrArgument ) ); |
|
778 |
|
779 TMccCodecInfoBuffer infoBuffer; |
|
780 infoBuffer.Copy( aConfigParams ); |
|
781 |
|
782 if ( !infoBuffer().iIsUpdate ) |
|
783 { |
|
784 DoConfigurePayloadFormatL( infoBuffer() ); |
|
785 } |
|
786 else |
|
787 { |
|
788 UpdateConfigurationL( infoBuffer() ); |
|
789 } |
|
790 |
|
791 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
792 RDebug::Print( _L("CIlbcPayloadFormatRead::ConfigurePayloadFormatL OUT") ); |
|
793 #endif |
|
794 } |
|
795 |
|
796 // ----------------------------------------------------------------------------- |
|
797 // CIlbcPayloadFormatRead::UpdateConfigurationL |
|
798 // Update payload decoder parameters |
|
799 // ----------------------------------------------------------------------------- |
|
800 // |
|
801 void CIlbcPayloadFormatRead::UpdateConfigurationL( |
|
802 const TMccCodecInfo& aCodecInfo ) |
|
803 { |
|
804 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
805 RDebug::Print( _L("CIlbcPayloadFormatRead::UpdateConfigurationL IN") ); |
|
806 #endif |
|
807 |
|
808 if ( iCInfo.iMaxPtime != aCodecInfo.iMaxPtime || |
|
809 iCInfo.iPtime != aCodecInfo.iPtime || |
|
810 iCInfo.iHwFrameTime != aCodecInfo.iHwFrameTime || |
|
811 iCInfo.iBitrate != aCodecInfo.iBitrate ) |
|
812 { |
|
813 // Reconfigure payload formatter and update the sourcebuffer fill |
|
814 // request so that multiplexer gets a update to the possibly changed |
|
815 // buffer. |
|
816 DoConfigurePayloadFormatL( aCodecInfo ); |
|
817 FillSourceBufferL(); |
|
818 } |
|
819 |
|
820 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
821 RDebug::Print( _L("CIlbcPayloadFormatRead::UpdateConfigurationL OUT") ); |
|
822 #endif |
|
823 } |
|
824 |
|
825 // ----------------------------------------------------------------------------- |
|
826 // CIlbcPayloadFormatRead::DoConfigurePayloadFormatL |
|
827 // ----------------------------------------------------------------------------- |
|
828 // |
|
829 void CIlbcPayloadFormatRead::DoConfigurePayloadFormatL( const TMccCodecInfo& aCodecInfo ) |
|
830 { |
|
831 __ASSERT_ALWAYS( aCodecInfo.iHwFrameTime != 0, User::Leave( KErrArgument ) ); |
|
832 |
|
833 iCInfo = aCodecInfo; |
|
834 |
|
835 // Maximum number of frames in RTP payload |
|
836 const TUint pktCount = TUint8( iCInfo.iMaxPtime / iCInfo.iHwFrameTime ); |
|
837 |
|
838 if ( KiLBCBitrateWith20ms == iCInfo.iBitrate ) |
|
839 { |
|
840 iCInfo.iHwFrameTime = KiLBCFrameTime20ms; |
|
841 iCInfo.iFrameSize = KiLBCFrameSize20ms; |
|
842 iFrameTimeInterval = (TInt64) KiLBCFrameTime20ms * pktCount; |
|
843 } |
|
844 else if ( KiLBCBitrateWith30ms == iCInfo.iBitrate ) |
|
845 { |
|
846 iCInfo.iHwFrameTime = KiLBCFrameTime30ms; |
|
847 iCInfo.iFrameSize = KiLBCFrameSize30ms; |
|
848 iFrameTimeInterval = (TInt64) KiLBCFrameTime30ms * pktCount; |
|
849 } |
|
850 else |
|
851 { |
|
852 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
853 RDebug::Print( _L("CIlbcPayloadFormatRead::DoConfigurePayloadFormatL KErrNotSupported") ); |
|
854 #endif |
|
855 User::Leave( KErrNotSupported ); |
|
856 } |
|
857 |
|
858 // Create two frame buffers used in data transfer with datapath. |
|
859 // Space for two byte additional header needed by HW codec is reserved. |
|
860 // 30ms mode buffers can be used also for 20ms mode |
|
861 if ( !iFrameBufferOne && !iFrameBufferTwo ) |
|
862 { |
|
863 iFrameBufferOne = |
|
864 CMMFDataBuffer::NewL( KiLBCFrameSize30ms + KiLBCNumOfHeaderBytes ); |
|
865 iFrameBufferTwo = |
|
866 CMMFDataBuffer::NewL( KiLBCFrameSize30ms + KiLBCNumOfHeaderBytes ); |
|
867 } |
|
868 |
|
869 // PayloadBuffer contains data received from network |
|
870 TInt plSize = iCInfo.iFrameSize * pktCount; |
|
871 |
|
872 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
873 RDebug::Print( _L("CILBCPayloadFormatRead::DoConfigurePayloadFormatL FramesPerPacket: %d" ), pktCount ); |
|
874 RDebug::Print( _L("CILBCPayloadFormatRead::DoConfigurePayloadFormatL FrameSize: %d" ), iCInfo.iFrameSize ); |
|
875 #endif |
|
876 |
|
877 if ( EGenRedUsed == iCInfo.iAlgoUsed ) |
|
878 { |
|
879 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
880 RDebug::Print( _L("CG711PayloadFormatRead::DoConfigurePayloadFormatL, RED LEVEL: %d"), |
|
881 iCInfo.iRedundancyCount ); |
|
882 #endif |
|
883 if ( iCInfo.iRedundancyCount ) |
|
884 { |
|
885 plSize *= iCInfo.iRedundancyCount; |
|
886 } |
|
887 |
|
888 CPayloadFormatRead* redDecoder |
|
889 = static_cast<CPayloadFormatRead*>( iClip ); |
|
890 |
|
891 TMccRedPayloadReadConfig config; |
|
892 config.iRedBlockCount = iCInfo.iRedundancyCount; |
|
893 config.iMaxPayloadSize = iCInfo.iFrameSize * pktCount; |
|
894 config.iNumOfEncodings = 1; |
|
895 config.iRedPayloadType = iCInfo.iRedundantPayload; |
|
896 config.InitPayloadTypes(); |
|
897 config.iEncPayloadTypes[0] = iCInfo.iPayloadType; |
|
898 TMccRedPayloadReadPckg pckg( config ); |
|
899 redDecoder->ConfigurePayloadFormatL( pckg ); |
|
900 } |
|
901 |
|
902 // PayloadBuffer contains data received from network |
|
903 if ( iSourceBufOwnership ) |
|
904 { |
|
905 delete iSourceBuffer; |
|
906 } |
|
907 |
|
908 iSourceBuffer = NULL; |
|
909 iSourceBuffer = CreateClipBufferL( plSize, iSourceBufOwnership ); |
|
910 } |
|
911 |
|
912 // ----------------------------------------------------------------------------- |
|
913 // CIlbcPayloadFormatRead::CreateClipBufferL |
|
914 // Creates buffer needed in data transfer with format readers clip. |
|
915 // ----------------------------------------------------------------------------- |
|
916 // |
|
917 CMMFDataBuffer* CIlbcPayloadFormatRead::CreateClipBufferL( |
|
918 TUint aSize, TBool& aIsOwnBuffer ) |
|
919 { |
|
920 #ifdef TRACE_ILBC_PAYLOAD_FORMAT_READ |
|
921 RDebug::Print( _L("CIlbcPayloadFormatRead::CreateClipBufferL") ); |
|
922 #endif |
|
923 |
|
924 CMMFDataBuffer* buffer( NULL ); |
|
925 if ( iClip->CanCreateSourceBuffer() ) |
|
926 { |
|
927 static_cast<CMMFFormatDecode*>( iClip )->SuggestSourceBufferSize( aSize ); |
|
928 |
|
929 TBool reference( EFalse ); |
|
930 CMMFBuffer* sourceBuf |
|
931 = iClip->CreateSourceBufferL( KUidMediaTypeAudio, reference ); |
|
932 TBool isSupportedBuf |
|
933 = CMMFBuffer::IsSupportedDataBuffer( sourceBuf->Type() ); |
|
934 TBool isOwnBuffer = reference ? EFalse : ETrue; |
|
935 |
|
936 if ( !isSupportedBuf ) |
|
937 { |
|
938 if ( isOwnBuffer ) |
|
939 { |
|
940 delete sourceBuf; |
|
941 } |
|
942 |
|
943 User::Leave( KErrNotSupported ); |
|
944 } |
|
945 |
|
946 aIsOwnBuffer = isOwnBuffer; |
|
947 buffer = static_cast<CMMFDataBuffer*>( sourceBuf ); |
|
948 } |
|
949 else |
|
950 { |
|
951 aIsOwnBuffer = ETrue; |
|
952 buffer = CMMFDataBuffer::NewL( aSize ); |
|
953 } |
|
954 |
|
955 return buffer; |
|
956 } |
|
957 |
|
958 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
|
959 |
|
960 // End of File |