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1 /* |
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2 * Copyright (c) 2004-2007 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: Downlink (playback) datapath |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 // INCLUDE FILES |
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22 #include <mmf/common/mmfcontroller.h> |
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23 #include "mccdldatapath.h" |
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24 #include "mccsubcontrollerlogs.h" |
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25 |
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26 // EXTERNAL DATA STRUCTURES |
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27 |
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28 // EXTERNAL FUNCTION PROTOTYPES |
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29 |
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30 // CONSTANTS |
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31 |
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32 // MACROS |
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33 |
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34 // LOCAL CONSTANTS AND MACROS |
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35 |
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36 // MODULE DATA STRUCTURES |
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37 |
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38 // LOCAL FUNCTION PROTOTYPES |
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39 |
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40 // FORWARD DECLARATIONS |
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41 |
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42 // ============================= LOCAL FUNCTIONS =============================== |
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43 |
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44 // ============================ MEMBER FUNCTIONS =============================== |
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45 |
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46 // ----------------------------------------------------------------------------- |
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47 // CMccDlDataPath::CMccDlDataPath |
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48 // C++ default constructor can NOT contain any code, that |
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49 // might leave. |
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50 // ----------------------------------------------------------------------------- |
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51 CMccDlDataPath::CMccDlDataPath( |
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52 MAsyncEventHandler* aEventHandler, |
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53 MMccResources* aMccResources, |
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54 TMediaId aMediaId ) : |
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55 CMccDataPathBase( aEventHandler, aMccResources, aMediaId ) |
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56 { |
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57 |
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58 } |
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59 |
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60 // ----------------------------------------------------------------------------- |
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61 // CMccDlDataPath::ConstructL |
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62 // Symbian 2nd phase constructor can leave. |
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63 // ----------------------------------------------------------------------------- |
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64 void CMccDlDataPath::ConstructL() |
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65 { |
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66 __SUBCONTROLLER( "CMccDlDataPath::ConstructL" ) |
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67 __ASSERT_ALWAYS( iEventHandler, User::Leave( KErrArgument ) ); |
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68 __ASSERT_ALWAYS( iMccResources, User::Leave( KErrArgument ) ); |
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69 __SUBCONTROLLER( "CMccDlDataPath::ConstructL, exit" ) |
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70 } |
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71 |
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72 // ----------------------------------------------------------------------------- |
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73 // CMccDlDataPath::NewL |
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74 // Static constructor. |
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75 // ----------------------------------------------------------------------------- |
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76 CMccDlDataPath* CMccDlDataPath::NewL( |
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77 MAsyncEventHandler* aEventHandler, |
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78 MMccResources* aMccResources, |
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79 TMediaId aMediaId ) |
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80 { |
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81 __ASSERT_ALWAYS ( aEventHandler, User::Leave(KErrArgument) ); |
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82 |
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83 CMccDlDataPath* self = new ( ELeave ) CMccDlDataPath( aEventHandler, |
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84 aMccResources, |
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85 aMediaId ); |
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86 CleanupStack::PushL( self ); |
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87 self->ConstructL(); |
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88 CleanupStack::Pop( self ); |
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89 |
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90 return self; |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CMccDlDataPath::~CMccDlDataPath |
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95 // Destructor |
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96 |
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97 // ----------------------------------------------------------------------------- |
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98 CMccDlDataPath::~CMccDlDataPath() |
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99 { |
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100 __SUBCONTROLLER( "CMccDlDataPath::~CMccDlDataPath" ) |
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101 __SUBCONTROLLER( "CMccDlDataPath::~CMccDlDataPath, exit" ) |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CMccDlDataPath::PrimeL |
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106 // Primes the datapath |
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107 // ----------------------------------------------------------------------------- |
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108 void CMccDlDataPath::PrimeL( TUint32 aEndpointId ) |
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109 { |
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110 __SUBCONTROLLER( "CMccDlDataPath::PrimeL" ) |
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111 |
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112 __ASSERT_ALWAYS( iDataPathCreated, User::Leave( KErrNotReady ) ); |
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113 __ASSERT_ALWAYS( iDataSource, User::Leave( KErrGeneral ) ); |
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114 __ASSERT_ALWAYS( iDataSink, User::Leave( KErrGeneral ) ); |
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115 |
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116 if ( !iSourceBuffer ) |
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117 { |
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118 TBool bufferReference; |
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119 iSourceBuffer = |
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120 iDataSource->CreateSourceBufferL( iMediaId, bufferReference ); |
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121 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrGeneral ) ); |
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122 __ASSERT_ALWAYS( bufferReference, User::Leave( KErrGeneral ) ); |
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123 } |
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124 |
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125 if ( ControlSource( aEndpointId ) ) |
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126 { |
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127 __SUBCONTROLLER( "CMccDlDataPath::PrimeL, control source" ) |
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128 |
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129 SetStateL( EPrimed ); |
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130 |
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131 iDataSource->NegotiateSourceL( *iDataSink ); |
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132 |
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133 iDataSource->SourcePrimeL(); |
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134 } |
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135 |
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136 if ( ControlSink( aEndpointId ) ) |
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137 { |
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138 __SUBCONTROLLER( "CMccDlDataPath::PrimeL, control sink" ) |
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139 |
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140 iDataSink->SinkPrimeL(); |
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141 } |
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142 |
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143 CreateCompleteCallBackL(); |
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144 |
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145 __SUBCONTROLLER( "CMccDlDataPath::PrimeL, exit" ) |
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146 } |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CMccDlDataPath::PauseL |
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150 // Pauses the downlink streaming |
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151 // ----------------------------------------------------------------------------- |
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152 void CMccDlDataPath::PauseL( TUint32 aEndpointId ) |
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153 { |
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154 __SUBCONTROLLER( "CMccDlDataPath::PauseL" ) |
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155 |
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156 __ASSERT_ALWAYS( iDataPathCreated, User::Leave( KErrNotReady ) ); |
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157 __ASSERT_ALWAYS( iDataSource, User::Leave( KErrGeneral ) ); |
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158 __ASSERT_ALWAYS( iDataSink, User::Leave( KErrGeneral ) ); |
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159 |
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160 if ( ControlSource( aEndpointId ) ) |
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161 { |
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162 __SUBCONTROLLER( "CMccDlDataPath::PauseL, control source" ) |
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163 |
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164 SetStateL( EPaused ); |
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165 |
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166 iDataSource->SourcePauseL(); |
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167 } |
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168 |
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169 if ( ControlSink( aEndpointId ) ) |
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170 { |
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171 __SUBCONTROLLER( "CMccDlDataPath::PauseL, control sink" ) |
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172 |
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173 if ( IsMmfEndpoint( iAssociatedSink ) ) |
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174 { |
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175 __SUBCONTROLLER( "CMccDlDataPath::PauseL, stop mmf sink" ) |
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176 |
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177 // Resource has to be freed |
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178 iDataSink->SinkStopL(); |
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179 } |
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180 else |
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181 { |
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182 iDataSink->SinkPauseL(); |
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183 } |
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184 } |
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185 |
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186 if ( State() == EPaused ) |
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187 { |
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188 iSourceBuffer = NULL; |
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189 |
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190 // Cancel the whole path |
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191 Cancel(); |
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192 |
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193 ChangeDataPathTransferState( ECanceled ); |
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194 } |
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195 |
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196 __SUBCONTROLLER( "CMccDlDataPath::PauseL, exit" ) |
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197 } |
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198 |
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199 // ----------------------------------------------------------------------------- |
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200 // CMccDlDataPath::PlayL |
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201 // Starts the downlink playing |
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202 // ----------------------------------------------------------------------------- |
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203 void CMccDlDataPath::PlayL( TUint32 aEndpointId ) |
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204 { |
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205 __SUBCONTROLLER( "CMccDlDataPath::PlayL" ) |
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206 |
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207 __ASSERT_ALWAYS( iDataPathCreated, User::Leave( KErrNotReady ) ); |
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208 __ASSERT_ALWAYS( iDataSource, User::Leave( KErrGeneral ) ); |
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209 __ASSERT_ALWAYS( iDataSink, User::Leave( KErrGeneral ) ); |
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210 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrGeneral ) ); |
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211 |
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212 iDataPathCompletedErrorCode = KErrNone; |
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213 |
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214 if ( ControlSource( aEndpointId ) ) |
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215 { |
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216 __SUBCONTROLLER( "CMccDlDataPath::PlayL, control source" ) |
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217 |
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218 SetStateL( EStreaming ); |
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219 |
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220 iDataSource->SourcePlayL(); |
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221 } |
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222 |
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223 if ( ControlSink( aEndpointId ) ) |
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224 { |
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225 __SUBCONTROLLER( "CMccDlDataPath::PlayL, control sink" ) |
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226 |
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227 iDataSink->SinkPlayL(); |
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228 } |
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229 |
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230 if ( State() == EStreaming && ChangeDataPathTransferState( ENeedSourceData ) ) |
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231 { |
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232 ActivateSourceBuffer(); |
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233 } |
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234 |
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235 __SUBCONTROLLER( "CMccDlDataPath::PlayL, exit" ) |
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236 } |
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237 |
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238 // ----------------------------------------------------------------------------- |
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239 // CMccDlDataPath::BufferEmptiedL |
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240 // From MDataSource |
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241 // ----------------------------------------------------------------------------- |
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242 void CMccDlDataPath::BufferEmptiedL( CMMFBuffer* aBuffer ) |
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243 { |
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244 // This is the buffer returned by DevSound when it has emptied it |
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245 // Check the buffer that it is not NULL and it is supported. |
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246 IsBufferSupportedL( aBuffer ); |
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247 if( EStreaming == State() ) |
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248 { |
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249 __ASSERT_ALWAYS( aBuffer == iSourceBuffer, User::Leave( KErrArgument ) ); |
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250 |
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251 iSourceBuffer->SetStatus( EAvailable ); |
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252 |
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253 ChangeDataPathTransferState( ENeedSourceData ); |
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254 } |
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255 else |
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256 { |
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257 // We're not streaming currently, can leave |
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258 User::Leave( KErrNotReady ); |
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259 } |
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260 } |
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261 |
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262 // ----------------------------------------------------------------------------- |
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263 // CMccDlDataPath::BufferFilledL |
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264 // From MDataSink |
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265 // ----------------------------------------------------------------------------- |
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266 void CMccDlDataPath::BufferFilledL( CMMFBuffer* aBuffer ) |
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267 { |
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268 if( EStreaming == State() ) |
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269 { |
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270 // There is a leave if aBuffer is NULL |
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271 // the ownership of the aBuffer is in source, so source |
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272 // must not give a NULL aBuffer |
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273 IsBufferSupportedL( aBuffer ); |
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274 |
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275 if ( !aBuffer->BufferSize() /*|| aBuffer->LastBuffer()*/ ) |
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276 { |
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277 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrArgument ) ); |
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278 |
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279 // Just in-case we are terminating on BufferSize == 0 or play window |
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280 iSourceBuffer->SetStatus( EAvailable ); |
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281 ChangeDataPathTransferState( ENeedSourceData, ETrue ); |
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282 } |
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283 else |
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284 { |
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285 if( iSourceBuffer != aBuffer ) |
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286 { |
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287 // Buffer has been changed by the source |
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288 iSourceBuffer = aBuffer; |
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289 } |
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290 |
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291 ChangeDataPathTransferState( ESendDataToSink ); |
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292 } |
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293 } |
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294 else |
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295 { |
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296 // We're not streaming so we can leave |
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297 User::Leave( KErrNotReady ); |
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298 } |
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299 } |
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300 |
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301 // ----------------------------------------------------------------------------- |
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302 // CMccDlDataPath::FillSourceBufferL |
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303 // Fill the source buffer |
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304 // ----------------------------------------------------------------------------- |
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305 void CMccDlDataPath::FillSourceBufferL() |
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306 { |
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307 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrNotReady ) ); |
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308 |
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309 iSourceBuffer->SetStatus( EBeingFilled ); |
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310 iSourceBuffer->SetLastBuffer( EFalse ); |
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311 ChangeDataPathTransferState( EWaitSource ); |
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312 iDataSource->FillBufferL( iSourceBuffer, this, iMediaId ); |
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313 } |
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314 |
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315 // ----------------------------------------------------------------------------- |
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316 // CMccDlDataPath::EmptySinkBufferL |
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317 // Empty the sink buffer |
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318 // ----------------------------------------------------------------------------- |
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319 void CMccDlDataPath::EmptySinkBufferL() |
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320 { |
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321 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrNotReady ) ); |
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322 |
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323 ChangeDataPathTransferState( EWaitSink ); |
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324 |
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325 iSourceBuffer->SetStatus( EFull ); |
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326 TRAPD( error, iDataSink->EmptyBufferL( iSourceBuffer, this, iMediaId ) ); |
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327 |
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328 if ( KErrEof == error || KErrOverflow == error || KErrUnderflow == error ) |
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329 { |
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330 iDataPathCompletedErrorCode = error; |
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331 ChangeDataPathTransferState( EEndOfData ); |
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332 } |
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333 else |
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334 { |
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335 User::LeaveIfError( error ); |
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336 } |
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337 } |
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338 |
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339 // ----------------------------------------------------------------------------- |
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340 // CMccDlDataPath::DoEndOfDataL |
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341 // Worker function for data ending |
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342 // ----------------------------------------------------------------------------- |
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343 void CMccDlDataPath::DoEndOfDataL() |
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344 { |
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345 if ( KUidMmfAudioOutput != iDataSink->DataSinkType() ) |
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346 { |
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347 if ( KErrNone == iDataPathCompletedErrorCode ) |
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348 { |
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349 iDataPathCompletedErrorCode = KErrCompletion; |
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350 } |
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351 } |
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352 |
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353 SignalDataPathCompleteL(iDataPathCompletedErrorCode); |
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354 |
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355 SetStateL( EStopped ); |
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356 } |
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357 |
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358 // ----------------------------------------------------------------------------- |
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359 // CMccDlDataPath::Stop |
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360 // Stop the datapath |
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361 // ----------------------------------------------------------------------------- |
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362 void CMccDlDataPath::StopL( TUint32 aEndpointId ) |
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363 { |
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364 __SUBCONTROLLER( "CMccDlDataPath::StopL" ) |
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365 |
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366 __ASSERT_ALWAYS( iDataPathCreated, User::Leave( KErrNotReady ) ); |
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367 |
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368 iDataPathCompletedErrorCode = KErrNone; |
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369 |
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370 if ( ControlSource( aEndpointId ) ) |
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371 { |
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372 __SUBCONTROLLER( "CMccDlDataPath::StopL, control source" ) |
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373 |
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374 SetStateL( EStopped ); |
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375 |
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376 iDataSource->SourceStopL(); |
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377 } |
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378 |
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379 if ( ControlSink( aEndpointId ) ) |
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380 { |
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381 __SUBCONTROLLER( "CMccDlDataPath::StopL, control sink" ) |
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382 |
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383 iDataSink->SinkStopL(); |
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384 } |
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385 |
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386 if ( State() == EStopped ) |
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387 { |
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388 iSourceBuffer = NULL; |
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389 |
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390 // Stop the whole path |
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391 Cancel(); |
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392 |
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393 ChangeDataPathTransferState( ECanceled ); |
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394 } |
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395 |
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396 __SUBCONTROLLER( "CMccDlDataPath::StopL, exit" ) |
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397 } |
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398 |
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399 // ----------------------------------------------------------------------------- |
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400 // CMccDlDataPath::NegotiateL |
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401 // Negotiate the source and sink |
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402 // ----------------------------------------------------------------------------- |
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403 void CMccDlDataPath::NegotiateL( MDataSource& aDataSource ) |
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404 { |
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405 __SUBCONTROLLER( "CMccDlDataPath::NegotiateL" ) |
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406 |
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407 __ASSERT_ALWAYS( iDataSink, User::Leave( KErrNotReady ) ); |
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408 __ASSERT_ALWAYS( &aDataSource, User::Leave( KErrArgument ) ); |
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409 |
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410 // NegotiateSourceL will do a re-entry so we need to have iDataSource set |
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411 // for that call to succeed. |
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412 iDataSource = &aDataSource; |
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413 iDataSource->NegotiateSourceL( *iDataSink ); |
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414 iDataSource = NULL; |
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415 this->AddDataSourceL( &aDataSource ); |
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416 |
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417 __SUBCONTROLLER( "CMccDlDataPath::NegotiateL exit" ) |
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418 } |
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419 |
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420 // ----------------------------------------------------------------------------- |
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421 // CMccDlDataPath::LoadL |
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422 // ----------------------------------------------------------------------------- |
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423 void CMccDlDataPath::LoadL( MDataSource& aDataSource ) |
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424 { |
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425 __SUBCONTROLLER( "CMccDlDataPath::LoadL" ) |
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426 |
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427 __ASSERT_ALWAYS( iDataSink, User::Leave( KErrNotReady ) ); |
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428 iDataSink->NegotiateL( aDataSource ); |
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429 |
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430 __SUBCONTROLLER( "CMccDlDataPath::LoadL exit" ) |
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431 } |
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432 |
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433 // ----------------------------------------------------------------------------- |
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434 // CMccDlDataPath::ResumeL |
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435 // Resumes pause audio streaming |
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436 // ----------------------------------------------------------------------------- |
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437 void CMccDlDataPath::ResumeL( TUint32 aEndpointId ) |
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438 { |
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439 __SUBCONTROLLER( "CMccDlDataPath::ResumeL" ) |
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440 |
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441 __ASSERT_ALWAYS( iDataPathCreated, User::Leave( KErrNotReady ) ); |
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442 |
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443 iDataPathCompletedErrorCode = KErrNone; |
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444 |
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445 if ( ControlSource( aEndpointId ) ) |
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446 { |
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447 __SUBCONTROLLER( "CMccDlDataPath::ResumeL, control source" ) |
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448 |
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449 SetStateL( EStreaming ); |
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450 |
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451 iDataSource->SourcePlayL(); |
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452 } |
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453 |
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454 if ( ControlSink( aEndpointId ) ) |
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455 { |
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456 __SUBCONTROLLER( "CMccDlDataPath::ResumeL, control sink" ) |
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457 |
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458 if ( IsMmfEndpoint( iAssociatedSink ) ) |
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459 { |
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460 __SUBCONTROLLER( "CMccDlDataPath::ResumeL, prime mmf sink" ) |
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461 |
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462 // Resource was freed at pause, initialize it again |
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463 iDataSink->SinkPrimeL(); |
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464 } |
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465 |
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466 iDataSink->SinkPlayL(); |
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467 } |
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468 |
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469 if ( State() == EStreaming && ChangeDataPathTransferState( ENeedSourceData ) ) |
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470 { |
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471 iSourceBuffer = NULL; |
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472 TBool bufferReference; |
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473 iSourceBuffer = |
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474 iDataSource->CreateSourceBufferL( iMediaId, bufferReference ); |
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475 __ASSERT_ALWAYS( iSourceBuffer, User::Leave( KErrGeneral ) ); |
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476 __ASSERT_ALWAYS( bufferReference, User::Leave( KErrGeneral ) ); |
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477 |
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478 ActivateSourceBuffer(); |
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479 } |
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480 |
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481 __SUBCONTROLLER( "CMccDlDataPath::ResumeL, exit" ) |
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482 } |
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483 |
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484 // ----------------------------------------------------------------------------- |
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485 // CMccDlDataPath::ActivateSourceBuffer |
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486 // Sets source buffer available |
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487 // ----------------------------------------------------------------------------- |
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488 void CMccDlDataPath::ActivateSourceBuffer() |
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489 { |
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490 if ( iSourceBuffer ) |
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491 { |
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492 iSourceBuffer->SetStatus( EAvailable ); |
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493 } |
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494 } |
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495 |
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496 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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497 |
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498 // End of File |