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1 /* |
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2 * Copyright (c) 2004 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: The functions in this module implements the common behavior |
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15 * for the audio encoder base class. |
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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 "AdvancedAudioEncoder.h" |
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23 #include <mmfdatabuffer.h> |
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24 #include "DebugMacros.h" |
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25 |
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26 // CONSTANTS |
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27 const TInt KEmptyBuffer = 1; |
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28 |
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29 // ============================ MEMBER FUNCTIONS =============================== |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // C++ default constructor can NOT contain any code, that |
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33 // might leave. |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 EXPORT_C CAdvancedAudioEncoder::CAdvancedAudioEncoder(TInt aPriority) |
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37 : CActive(aPriority), |
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38 iState(EIdle), |
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39 iSharedBuffers(NULL), |
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40 iMMFDevSound(NULL), |
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41 iObserver(NULL) |
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42 { |
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43 #ifdef _DEBUG |
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44 RDebug::Print(_L("CAdvancedAudioEncoder::CAdvancedAudioEncoder()")); |
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45 #endif |
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46 } |
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47 |
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48 // Destructor |
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49 EXPORT_C CAdvancedAudioEncoder::~CAdvancedAudioEncoder() |
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50 { |
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51 #ifdef _DEBUG |
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52 RDebug::Print(_L("CAdvancedAudioEncoder::~CAdvancedAudioEncoder()")); |
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53 #endif |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 // CAdvancedAudioEncoder::SetDevSound |
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58 // Sets the DevSound instance. |
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59 // ----------------------------------------------------------------------------- |
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60 // |
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61 EXPORT_C void CAdvancedAudioEncoder::SetDevSound( |
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62 CMMFDevSound& aDevSound ) |
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63 { |
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64 iMMFDevSound = &aDevSound; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CAdvancedAudioEncoder::SetObserver |
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69 // Sets the observer instance. |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 EXPORT_C void CAdvancedAudioEncoder::SetObserver( |
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73 MAdvancedAudioEncoderObserver& aObserver ) |
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74 { |
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75 iObserver = &aObserver; |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // CAdvancedAudioEncoder::SetSinkBuffers |
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80 // Sets the sink buffer for encoding operations. |
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81 // ----------------------------------------------------------------------------- |
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82 // |
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83 EXPORT_C void CAdvancedAudioEncoder::SetSinkBuffers( |
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84 RPointerArray<CMMFDataBuffer>* aBuffers ) |
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85 { |
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86 iSharedBuffers = aBuffers; |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // CAdvancedAudioEncoder::EmptyBuffer |
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91 // Request to fill the specified buffer with converted data. |
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92 // ----------------------------------------------------------------------------- |
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93 // |
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94 EXPORT_C void CAdvancedAudioEncoder::EmptyBuffer( |
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95 CMMFBuffer* aBuffer) |
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96 { |
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97 #ifdef _DEBUG |
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98 // RDebug::Print(_L("CAdvancedAudioEncoder::EmptyBuffer")); |
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99 #endif |
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100 iBufferToEmpty = aBuffer; // store away the buffer |
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101 iState = EEncoding; |
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102 |
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103 iRequest = KEmptyBuffer; |
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104 Ready(KErrNone); |
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105 SetActive(); |
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106 } |
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107 |
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108 // ----------------------------------------------------------------------------- |
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109 // CAdvancedAudioEncoder::Stop |
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110 // Stops encoding process. |
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111 // ----------------------------------------------------------------------------- |
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112 // |
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113 EXPORT_C void CAdvancedAudioEncoder::Stop() |
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114 { |
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115 DP1(_L("CAdvancedAudioEncoder::Stop start iNextBuffer[%d]"), iNextBuffer); |
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116 |
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117 // There are 2 situations in which this function is called. |
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118 // First when Devsound has already given a buffer to Encoder to be handled. |
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119 // In which case, one needs to finish handling it by calling HandleEmptyBufferL(). |
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120 // Secondly, in a situation where the current shared buffer is being filled (partially full) |
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121 // in which case, the buffer needs to be flushed |
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122 if (iBufferToEmpty && (iState == EEncoding)) |
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123 { |
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124 DP1(_L("CAdvancedAudioEncoder::Stop setting last buffer[%d]"), iBufferToEmpty); |
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125 iBufferToEmpty->SetLastBuffer(ETrue); |
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126 TRAPD(err, HandleEmptyBufferL()); |
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127 if ( err ) |
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128 { |
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129 DP1(_L("CAdvancedAudioEncoder::Stop err[%d]"), err); |
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130 iState = EIdle; |
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131 iObserver->SendEvent(TMMFEvent(KMMFEventCategoryPlaybackComplete, err)); |
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132 } |
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133 } |
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134 else if (iNextBuffer) |
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135 { // a record controller may call stop before buffers are initialized |
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136 if (iNextBuffer->Status() == EBeingFilled) |
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137 { |
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138 DP1(_L("CAdvancedAudioEncoder::Stop setting buffer[%d] to EFull"), iNextBuffer); |
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139 iNextBuffer->SetStatus(EFull); |
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140 DP1(_L("CAdvancedAudioEncoder::Stop emptying buffer[%d]"), iNextBuffer); |
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141 iObserver->EmptyBuffer(iNextBuffer); |
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142 } |
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143 } |
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144 |
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145 iState = EIdle; |
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146 DP0(_L("CAdvancedAudioEncoder::Stop end")); |
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147 } |
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148 |
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149 // ----------------------------------------------------------------------------- |
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150 // CAdvancedAudioEncoder::Ready |
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151 // Utility function to post a request complete |
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152 // ----------------------------------------------------------------------------- |
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153 // |
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154 EXPORT_C void CAdvancedAudioEncoder::Ready( |
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155 const TInt aStatus) |
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156 { |
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157 TRequestStatus* stat = &iStatus; |
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158 User::RequestComplete(stat, aStatus); |
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159 } |
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160 |
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161 // ----------------------------------------------------------------------------- |
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162 // CDevSoundAudioInput::NextSharedBufferL |
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163 // Determine the next available shared buffer from the pool of shared buffers |
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164 // ----------------------------------------------------------------------------- |
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165 // |
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166 EXPORT_C void CAdvancedAudioEncoder::NextSharedBufferL() |
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167 { |
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168 if ( (*iSharedBuffers)[iSharedBufferIndex]->Status() == EAvailable ) |
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169 { |
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170 iNextBuffer = (*iSharedBuffers)[iSharedBufferIndex]; |
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171 iSharedBufferIndex++; |
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172 if ( iSharedBufferIndex == iSharedBuffers->Count() ) |
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173 { |
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174 iSharedBufferIndex = 0; |
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175 } |
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176 } |
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177 else |
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178 { |
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179 #ifdef _DEBUG |
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180 RDebug::Print(_L("CAdvancedAudioEncoder::NextSharedBufferL - KErrOverflow")); |
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181 #endif |
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182 User::Leave(KErrOverflow); |
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183 } |
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184 } |
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185 |
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186 // ----------------------------------------------------------------------------- |
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187 // CAdvancedAudioEncoder::RunL |
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188 // Invoke by the active scheduler when a request completes |
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189 // ----------------------------------------------------------------------------- |
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190 // |
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191 EXPORT_C void CAdvancedAudioEncoder::RunL() |
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192 { |
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193 #ifdef _DEBUG |
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194 // RDebug::Print(_L("CAdvancedAudioEncoder::RunL")); |
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195 #endif |
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196 switch(iRequest) |
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197 { |
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198 case KEmptyBuffer: |
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199 if ( iState == EEncoding ) |
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200 { |
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201 TRAPD(err, HandleEmptyBufferL()); |
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202 if ( err ) |
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203 { |
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204 #ifdef _DEBUG |
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205 RDebug::Print(_L("CAdvancedAudioEncoder::RunL err[%d]"), err); |
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206 #endif |
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207 // if error is encountered, the state is reset and event is generated and the recording is stopped. |
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208 //err = KErrDied; |
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209 iState = EIdle; |
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210 iObserver->SendEvent(TMMFEvent(KMMFEventCategoryPlaybackComplete, err)); |
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211 } |
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212 } |
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213 break; |
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214 |
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215 default: |
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216 break; |
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217 }; |
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218 } |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // CAdvancedAudioEncoder::DoCancel |
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222 // Cancels the current and any on going requests/tasks. |
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223 // ----------------------------------------------------------------------------- |
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224 // |
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225 EXPORT_C void CAdvancedAudioEncoder::DoCancel() |
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226 { |
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227 } |
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228 |
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229 // End of file |