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1 /* |
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2 * Copyright (c) 2005 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: Group for distance attenuation controls |
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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 // INCLUDE FILES |
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20 |
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21 #include "cammsdistanceattenuationcontrolgroup.h" |
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22 #include "cammsbasedistanceattenuationcontrol.h" |
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23 |
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24 // CONSTANTS |
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25 static const TInt KAMMSMinDistance = 1000; |
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26 static const TInt KAMMSRolloffFactor = 1000; |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CAMMSDistanceAttenuationControlGroup::NewLC |
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32 // Two-phased constructor. |
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33 // ----------------------------------------------------------------------------- |
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34 CAMMSDistanceAttenuationControlGroup* |
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35 CAMMSDistanceAttenuationControlGroup::NewLC() |
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36 { |
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37 CAMMSDistanceAttenuationControlGroup* self = |
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38 new(ELeave) CAMMSDistanceAttenuationControlGroup; |
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39 |
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40 CleanupStack::PushL(self); |
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41 // calls base class ConstructL |
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42 self->ConstructL(); |
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43 |
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44 return self; |
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45 } |
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46 |
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47 //Destructor |
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48 CAMMSDistanceAttenuationControlGroup::~CAMMSDistanceAttenuationControlGroup() |
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49 { |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CAMMSDistanceAttenuationControlGroup::MaxDistance |
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54 // Returns the maximum distance. |
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55 // (other items were commented in a header). |
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56 // ----------------------------------------------------------------------------- |
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57 TInt32 CAMMSDistanceAttenuationControlGroup::MaxDistance() const |
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58 { |
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59 return iCommited.iMaxDistance; |
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60 } |
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61 |
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62 // ----------------------------------------------------------------------------- |
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63 // CAMMSDistanceAttenuationControlGroup::MinDistance |
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64 // Returns the distance where the source is loudest. |
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65 // (other items were commented in a header). |
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66 // ----------------------------------------------------------------------------- |
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67 TInt32 CAMMSDistanceAttenuationControlGroup::MinDistance() const |
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68 { |
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69 return iCommited.iMinDistance; |
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70 } |
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71 |
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72 // ----------------------------------------------------------------------------- |
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73 // CAMMSDistanceAttenuationControlGroup::MuteAfterMax |
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74 // Returns how the distance gain behaves for distances beyond |
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75 // the maximum distance. |
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76 // (other items were commented in a header). |
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77 // ----------------------------------------------------------------------------- |
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78 TBool CAMMSDistanceAttenuationControlGroup::MuteAfterMax() const |
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79 { |
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80 return iCommited.iMuteAfterMax; |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CAMMSDistanceAttenuationControlGroup::RolloffFactor |
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85 // Returns the rolloff factor for the distance gain. |
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86 // (other items were commented in a header). |
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87 // ----------------------------------------------------------------------------- |
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88 TUint32 CAMMSDistanceAttenuationControlGroup::RolloffFactor() const |
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89 { |
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90 return iCommited.iRolloffFactor; |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CAMMSDistanceAttenuationControlGroup::SetParametersL |
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95 // Sets all the 3D audio distance attenuation parameters simultaneously |
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96 // (other items were commented in a header). |
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97 // ----------------------------------------------------------------------------- |
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98 void CAMMSDistanceAttenuationControlGroup::SetParametersL( |
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99 TInt32 aMinDistance, |
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100 TInt32 aMaxDistance, |
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101 TBool aMuteAfterMax, |
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102 TUint32 aRolloffFactor) |
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103 { |
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104 // temporary values, moved to the commited variables in CommitL() method |
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105 iUncommited.iMinDistance = aMinDistance; |
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106 iUncommited.iMaxDistance = aMaxDistance; |
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107 iUncommited.iMuteAfterMax = aMuteAfterMax; |
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108 iUncommited.iRolloffFactor = aRolloffFactor; |
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109 |
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110 UpdateL(EDistance); |
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111 } |
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112 |
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113 // ----------------------------------------------------------------------------- |
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114 // CAMMSDistanceAttenuationControlGroup::TypeSafeControl |
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115 // Get and cast a control. Ownership is not tranferred. |
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116 // (other items were commented in a header). |
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117 // ----------------------------------------------------------------------------- |
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118 CAMMSBaseDistanceAttenuationControl* |
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119 CAMMSDistanceAttenuationControlGroup::TypeSafeControl(TInt aIndex) const |
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120 { |
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121 return static_cast<CAMMSBaseDistanceAttenuationControl*>(Control(aIndex)); |
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122 } |
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123 |
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124 // ----------------------------------------------------------------------------- |
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125 // CAMMSDistanceAttenuationControlGroup::ClassName |
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126 // Returns class name that identifies this control group. |
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127 // (other items were commented in a header). |
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128 // ----------------------------------------------------------------------------- |
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129 const TDesC16& CAMMSDistanceAttenuationControlGroup::ClassName() |
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130 { |
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131 return KAMMSDistanceAttenuationClassName; |
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132 } |
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133 |
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134 // ----------------------------------------------------------------------------- |
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135 // CAMMSDistanceAttenuationControlGroup::CommitL |
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136 // Transfers all the pending parameters to the audio processing system. |
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137 // (other items were commented in a header). |
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138 // ----------------------------------------------------------------------------- |
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139 void CAMMSDistanceAttenuationControlGroup::CommitL(TInt aCommit) |
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140 { |
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141 if (aCommit & EDistance) |
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142 { |
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143 TInt controls = ControlCount(); |
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144 for (TInt i = 0; i < controls; i++) |
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145 { |
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146 TypeSafeControl(i)->SetParametersL( |
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147 iUncommited.iMinDistance, |
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148 iUncommited.iMaxDistance, |
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149 iUncommited.iMuteAfterMax, |
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150 iUncommited.iRolloffFactor); |
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151 } |
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152 iCommited = iUncommited; |
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153 } |
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154 } |
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155 |
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156 // ----------------------------------------------------------------------------- |
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157 // CAMMSDistanceAttenuationControlGroup::NotifyPlayerAddedL |
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158 // Called by when a new player is added |
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159 // (other items were commented in a header). |
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160 // ----------------------------------------------------------------------------- |
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161 void CAMMSDistanceAttenuationControlGroup::NotifyPlayerAddedL( |
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162 CMMAPlayer* aPlayer, |
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163 CMMAControl* aControl) |
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164 { |
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165 CAMMSAudio3DControlGroup::NotifyPlayerAddedL(aPlayer, aControl); |
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166 |
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167 CAMMSBaseDistanceAttenuationControl* control = |
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168 static_cast<CAMMSBaseDistanceAttenuationControl*>(aControl); |
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169 |
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170 // set the current parameters |
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171 control->SetParametersL( |
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172 iCommited.iMinDistance, |
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173 iCommited.iMaxDistance, |
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174 iCommited.iMuteAfterMax, |
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175 iCommited.iRolloffFactor); |
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176 } |
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177 |
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178 // ----------------------------------------------------------------------------- |
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179 // CAMMSDistanceAttenuationControlGroup::CAMMSDistanceAttenuationControlGroup |
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180 // C++ default constructor can NOT contain any code, that |
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181 // might leave. |
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182 // ----------------------------------------------------------------------------- |
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183 CAMMSDistanceAttenuationControlGroup::CAMMSDistanceAttenuationControlGroup() |
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184 : CAMMSAudio3DControlGroup(KAMMSBaseDistanceAttenuationControl) |
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185 { |
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186 iCommited.iMinDistance = KAMMSMinDistance; |
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187 iCommited.iMaxDistance = KMaxTInt; |
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188 iCommited.iMuteAfterMax = ETrue; |
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189 iCommited.iRolloffFactor = KAMMSRolloffFactor; |
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190 } |
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191 |
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192 |
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193 // End of File |