1 /* |
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2 * Copyright (c) 2005-2007 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: This class is used to create tuner player and control |
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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 // INCLUDE FILES |
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21 #include "AMMSTunerFactory.h" |
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22 #include "CAMMSTunerPlayer.h" |
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23 #include "CAMMSTunerControl.h" |
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24 //#include "CAMMSTunerVolumeControl.h" |
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25 #include <CMMAPlayerProperties.h> |
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26 |
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27 #include <e32std.h> |
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28 #include <e32math.h> |
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29 #include <jdebug.h> |
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30 |
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31 // CONSTANTS |
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32 _LIT(KFreqParam, "f"); |
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33 |
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34 _LIT(KModulationParam, "mod"); |
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35 |
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36 _LIT(KStereoModeParam, "st"); |
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37 MMA_PARAMETER_STR(KStereoModeParamMono, "mono"); |
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38 MMA_PARAMETER_STR(KStereoModeParamStereo, "stereo"); |
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39 MMA_PARAMETER_STR(KStereoModeParamAuto, "auto"); |
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40 MMA_PARAMETER_ARRAY(KValidStereoModeValues) |
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41 { |
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42 { |
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43 &KStereoModeParamMono |
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44 }, {&KStereoModeParamStereo}, {&KStereoModeParamAuto} |
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45 }; |
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46 |
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47 _LIT(KProgramIdParam, "id"); |
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48 _LIT(KPresetParam, "preset"); |
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49 |
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50 _LIT(KModulationFm, "fm"); |
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51 |
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52 _LIT(KStereoModeMono, "mono"); |
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53 _LIT(KStereoModeStereo, "stereo"); |
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54 _LIT(KStereoModeAuto, "auto"); |
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55 |
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56 const TInt KMegaHertzChar = 'M'; |
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57 const TInt KKiloHertzChar = 'k'; |
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58 const TInt KFreqDotChar = '.'; |
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59 |
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60 const TInt KMegaHzMultiplier = 1000000; |
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61 const TInt KKiloHzMultiplier = 1000; |
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62 |
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63 const TInt KStereoModeMonoInt = 1; |
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64 const TInt KStereoModeStereoInt = 2; |
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65 const TInt KStereoModeAutoInt = 3; |
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66 |
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67 // ============================ MEMBER FUNCTIONS =============================== |
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68 |
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69 // Destructor |
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70 AMMSTunerFactory::~AMMSTunerFactory() |
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71 { |
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72 |
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73 } |
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74 |
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75 |
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76 // ----------------------------------------------------------------------------- |
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77 // AMMSTunerFactory::CreatePlayerL |
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78 // ?implementation_description |
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79 // (other items were commented in a header). |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 void AMMSTunerFactory::CreatePlayerL(CAMMSTunerPlayer** aTunerPlayer, |
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83 const TDesC* aLocatorParams) |
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84 { |
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85 DEBUG("AMMSTunerFactory::CreatePlayerL +"); |
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86 |
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87 TInt frequency = 0; |
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88 TInt stereoMode = 0; |
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89 TInt preset = 0; |
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90 |
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91 if (aLocatorParams->Length() != 0) |
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92 { |
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93 DEBUG("AMMSTunerFactory::CreatePlayerL 1"); |
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94 ParseParamsL(aLocatorParams, frequency, stereoMode, preset); |
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95 } |
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96 |
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97 //create tunercontrol |
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98 CAMMSTunerControl* tunerControl = CAMMSTunerControl::NewL(); |
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99 CleanupStack::PushL(tunerControl); |
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100 |
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101 //set values to tunercontrol |
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102 if (frequency > 0) |
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103 { |
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104 tunerControl->SetFrequencyL(frequency); |
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105 } |
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106 |
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107 if (frequency == 0) |
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108 { |
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109 //by default frequency is fm modulation's min freq |
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110 tunerControl->SetFrequencyL(tunerControl->MinFreqL()); |
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111 } |
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112 |
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113 if (stereoMode > 0) |
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114 { |
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115 tunerControl->SetStereoModeL(stereoMode); |
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116 } |
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117 |
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118 if (preset > 0) |
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119 { |
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120 tunerControl->UsePresetL(preset); |
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121 } |
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122 |
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123 //create tunerplayer |
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124 *aTunerPlayer = CAMMSTunerPlayer::NewL(tunerControl); |
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125 |
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126 //create tunervolumeconrol |
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127 //CAMMSTunerVolumeControl* tunerVolumeControl = CAMMSTunerVolumeControl::NewL( *aTunerPlayer ); |
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128 |
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129 //add controls to player |
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130 (*aTunerPlayer)->AddControlL(tunerControl); |
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131 //(*aTunerPlayer)->AddControlL( tunerVolumeControl ); |
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132 CleanupStack::Pop(tunerControl); |
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133 DEBUG("AMMSTunerFactory::CreatePlayerL -"); |
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134 } |
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135 |
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136 // ----------------------------------------------------------------------------- |
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137 // AMMSTunerFactory::ParseParamsL |
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138 // ?implementation_description |
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139 // (other items were commented in a header). |
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140 // ----------------------------------------------------------------------------- |
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141 // |
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142 void AMMSTunerFactory::ParseParamsL(const TDesC* aLocatorParams, |
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143 TInt& aFrequency, |
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144 TInt& aStereoMode, |
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145 TInt& aPreset) |
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146 { |
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147 DEBUG("AMMSTunerFactory::ParseParamsL +"); |
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148 CMMAParameterRuleSet* rules = CMMAParameterRuleSet::NewLC(); |
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149 |
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150 //freq rule |
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151 TMMAParameterRuleDes freqRule(KFreqParam); |
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152 rules->AppendRuleL(&freqRule); |
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153 |
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154 //modulation rule |
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155 TMMAParameterRuleDes modulationRule(KModulationParam); |
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156 rules->AppendRuleL(&modulationRule); |
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157 |
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158 //stereo mode rule |
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159 TMMAParameterRuleDes stereoModeRule(KStereoModeParam, KValidStereoModeValues, |
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160 MMA_PARAMETER_ARRAY_SIZE(KValidStereoModeValues)); |
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161 rules->AppendRuleL(&stereoModeRule); |
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162 |
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163 //preset rule KMinTInt-KMaxTInt |
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164 TMMAParameterRuleInt presetRule(KPresetParam); |
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165 rules->AppendRuleL(&presetRule); |
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166 |
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167 //id rule |
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168 TMMAParameterRuleDes idRule(KProgramIdParam); |
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169 rules->AppendRuleL(&idRule); |
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170 |
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171 CMMAPlayerProperties* properties = CMMAPlayerProperties::NewL(*aLocatorParams, *rules); |
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172 CleanupStack::PushL(properties); |
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173 |
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174 // validating properties |
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175 properties->ValidateL(); |
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176 |
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177 //get freq |
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178 TPtrC freq(NULL, 0); |
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179 properties->GetProperty(KFreqParam, freq); |
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180 //parse frequency |
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181 if (freq.Length() != 0) |
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182 { |
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183 aFrequency = ParseFreqL(freq); |
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184 } |
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185 |
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186 //get modulation |
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187 TPtrC modulation(NULL, 0); |
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188 properties->GetProperty(KModulationParam, modulation); |
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189 if (modulation.Length() != 0) |
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190 { |
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191 // only fm modulation is supported |
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192 if (modulation.Compare(KModulationFm) != 0) |
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193 { |
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194 User::Leave(KErrNotSupported); |
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195 } |
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196 } |
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197 |
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198 //get stereo mode |
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199 TPtrC stereoMode(NULL, 0); |
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200 properties->GetProperty(KStereoModeParam, stereoMode); |
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201 if (stereoMode.Compare(KStereoModeMono) == 0) |
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202 { |
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203 aStereoMode = KStereoModeMonoInt; |
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204 } |
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205 else if (stereoMode.Compare(KStereoModeStereo) == 0) |
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206 { |
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207 aStereoMode = KStereoModeStereoInt; |
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208 } |
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209 else if (stereoMode.Compare(KStereoModeAuto) == 0) |
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210 { |
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211 aStereoMode = KStereoModeAutoInt; |
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212 } |
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213 |
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214 //get preset |
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215 properties->GetProperty(KPresetParam, aPreset); |
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216 |
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217 //get id |
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218 TPtrC id(NULL, 0); |
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219 properties->GetProperty(KProgramIdParam, id); |
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220 if (id.Length() != 0) |
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221 { |
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222 // id is not supported |
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223 User::Leave(KErrNotSupported); |
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224 } |
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225 |
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226 CleanupStack::PopAndDestroy(properties); |
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227 CleanupStack::PopAndDestroy(rules); |
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228 DEBUG("AMMSTunerFactory::ParseParamsL -"); |
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229 } |
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230 |
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231 // ----------------------------------------------------------------------------- |
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232 // AMMSTunerFactory::ParseFreqL |
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233 // ?implementation_description |
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234 // (other items were commented in a header). |
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235 // ----------------------------------------------------------------------------- |
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236 // |
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237 TInt AMMSTunerFactory::ParseFreqL(const TPtrC aFrequency) |
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238 { |
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239 DEBUG("AMMSTunerFactory::ParseFreqL +"); |
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240 TReal freqReal = 0; |
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241 |
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242 //is value MHz or kHz or just hertz |
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243 TInt freqPrefixMPos = aFrequency.Locate(KMegaHertzChar); |
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244 TInt freqPrefixKPos = aFrequency.Locate(KKiloHertzChar); |
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245 |
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246 if (freqPrefixMPos != KErrNotFound) |
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247 { |
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248 //there is a M |
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249 TPtrC hertz = aFrequency.Left(freqPrefixMPos); |
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250 //TPtrC -> TReal |
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251 TReal value = TDesCToTRealL(hertz); |
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252 |
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253 freqReal = value * KMegaHzMultiplier; |
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254 } |
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255 else if (freqPrefixKPos != KErrNotFound) |
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256 { |
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257 //there is a k |
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258 TPtrC hertz = aFrequency.Left(freqPrefixKPos); |
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259 //TPtrC -> TReal |
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260 TReal value = TDesCToTRealL(hertz); |
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261 |
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262 freqReal = value * KKiloHzMultiplier; |
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263 } |
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264 else |
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265 { |
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266 //parameter value is simply hertz, there is no M or k |
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267 //TPtrC -> TReal |
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268 freqReal = TDesCToTRealL(aFrequency); |
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269 } |
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270 TInt32 freqInt = 0; |
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271 //TReal -> TInt |
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272 TInt err = Math::Int(freqInt, freqReal); |
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273 if (err != KErrNone) |
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274 { |
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275 User::Leave(KErrArgument); |
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276 } |
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277 |
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278 return freqInt; |
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279 } |
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280 |
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281 // ----------------------------------------------------------------------------- |
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282 // AMMSTunerFactory::TDesCToTRealL |
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283 // ?implementation_description |
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284 // (other items were commented in a header). |
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285 // ----------------------------------------------------------------------------- |
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286 // |
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287 TReal AMMSTunerFactory::TDesCToTRealL(const TPtrC aHertz) |
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288 { |
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289 DEBUG("AMMSTunerFactory::TDesCToTRealL +"); |
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290 TReal valueReal = 0; |
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291 TLex lex(aHertz); |
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292 if ((lex.Val(valueReal, KFreqDotChar) != KErrNone) || |
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293 !lex.Eos()) |
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294 { |
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295 User::Leave(KErrArgument); |
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296 } |
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297 return valueReal; |
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298 } |
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299 |
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300 // End of File |
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