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1 /* |
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2 * Copyright (c) 2004-2009 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: Generic hid finder implementation |
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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 <e32std.h> |
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20 #include <e32svr.h> |
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21 |
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22 #include "finder.h" |
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23 #include "debug.h" |
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24 |
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25 // ---------------------------------------------------------------------- |
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26 |
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27 // Define this for additional debug output (this file only): |
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28 #define EXTRA_DEBUG |
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29 |
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30 #ifdef EXTRA_DEBUG |
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31 #define DBG(a) a; |
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32 #else |
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33 #define DBG(a) |
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34 #endif |
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35 |
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36 // ======== MEMBER FUNCTIONS ======== |
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37 |
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38 // --------------------------------------------------------------------------- |
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39 // THeadsetFinder() |
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40 // --------------------------------------------------------------------------- |
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41 // |
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42 THeadsetFinder::THeadsetFinder() : |
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43 iAppCollection( 0 ), iFieldList() |
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44 { |
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45 // Nothing else to do |
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46 } |
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47 |
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48 // -------------------------------------------------------------------------- |
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49 // From class MHidFieldFinder |
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50 // BeginCollection() |
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51 // -------------------------------------------------------------------------- |
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52 // |
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53 TBool THeadsetFinder::BeginCollection( const CCollection* aCollection ) |
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54 { |
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55 TBool examineCollection = ETrue; |
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56 |
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57 const TInt KConsumerControl = 0x01; |
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58 |
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59 // Only look at top-level application (consumer devices: consumer |
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60 // control) collections: |
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61 // |
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62 |
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63 if ( ( aCollection->IsApplication() ) && ( iAppCollection == 0 ) ) |
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64 { |
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65 // Top-level application collection. |
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66 |
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67 if ( ( aCollection->UsagePage() == EUsagePageConsumer ) |
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68 && ( aCollection->Usage() == KConsumerControl ) ) |
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69 { |
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70 TRACE_INFO(_L("[HID]\tTHeadsetFinder::BeginCollection: this is \ |
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71 consumer collection ")); |
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72 // Collection is a consumer device: |
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73 iAppCollection = aCollection; |
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74 iFieldList.Reset(); |
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75 } |
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76 else |
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77 { |
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78 TRACE_INFO(_L("[HID]\tTHeadsetFinder::BeginCollection: not \ |
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79 consumer collection")); |
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80 // Skip other types of top-level application collection: |
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81 examineCollection = EFalse; |
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82 } |
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83 } |
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84 return examineCollection; |
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85 |
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86 } |
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87 |
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88 // --------------------------------------------------------------------------- |
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89 // From class MHidFieldFinder |
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90 // EndCollection() |
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91 // --------------------------------------------------------------------------- |
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92 // |
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93 TBool THeadsetFinder::EndCollection( const CCollection* aCollection ) |
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94 { |
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95 TBool continueSearch = ETrue; |
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96 |
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97 TRACE_INFO(_L("[HID]\tTHeadsetFinder::EndCollection")); |
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98 if ( aCollection == iAppCollection ) |
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99 { |
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100 // Top-level application(Consumer Devices:Consumer Control) finished: |
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101 // |
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102 iAppCollection = 0; |
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103 |
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104 // Stop if we've found a device we can use in this |
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105 // application collection: |
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106 // |
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107 continueSearch = !Found(); |
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108 } |
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109 |
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110 return continueSearch; |
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111 } |
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112 |
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113 // --------------------------------------------------------------------------- |
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114 // From class MHidFieldFinder |
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115 // Field() |
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116 // --------------------------------------------------------------------------- |
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117 // |
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118 void THeadsetFinder::Field( const CField* aField ) |
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119 { |
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120 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field( 0x%08x)"),aField)); |
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121 TInt error = KErrNone; |
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122 if ( iAppCollection ) |
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123 { |
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124 |
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125 if ( IsTelephony( aField ) ) |
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126 { |
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127 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony"))); |
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128 error = iFieldList.Append( aField ); |
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129 if ( error != KErrNone ) |
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130 { |
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131 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony \ |
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132 failed"))); |
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133 } |
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134 } |
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135 else if ( IsConsumer( aField ) ) |
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136 { |
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137 TRACE_INFO(_L("[HID]\tTHeadsetFinder::Field, consumer")); |
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138 error = iFieldList.Append( aField ); |
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139 if ( error != KErrNone ) |
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140 { |
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141 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony \ |
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142 failed"))); |
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143 } |
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144 } |
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145 else |
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146 { |
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147 TRACE_INFO(_L("[HID]\tTHeadsetFinder::Field, other, or empty \ |
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148 field")); |
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149 } |
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150 } |
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151 } |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // IsConsumer() |
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155 // --------------------------------------------------------------------------- |
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156 // |
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157 TBool THeadsetFinder::IsConsumer( const CField* aField ) const |
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158 { |
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159 TBool found = EFalse; |
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160 |
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161 if ( aField->IsInput() && aField->IsData() && ( aField->UsagePage() |
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162 == EUsagePageConsumer ) ) |
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163 { |
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164 #ifdef _DEBUG |
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165 for ( TInt i = 0; i < aField->UsageCount(); i++ ) |
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166 { |
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167 TRACE_INFO((_L("[HID]\tTHeadsetFinder::IsConsumer: Usage %d: \ |
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168 %02x"),i,aField->Usage(i))); |
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169 } |
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170 #endif |
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171 // *** Add usage test here *** |
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172 TRACE_INFO(_L("[HID]\tTHeadsetFinder::IsConsumer: Consumer keys \ |
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173 field found\r\n")); |
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174 found = ETrue; |
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175 } |
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176 return found; |
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177 } |
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178 |
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179 // --------------------------------------------------------------------------- |
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180 // IsTelephony() |
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181 // --------------------------------------------------------------------------- |
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182 // |
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183 TBool THeadsetFinder::IsTelephony( const CField* aField ) const |
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184 { |
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185 TBool found = EFalse; |
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186 |
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187 if ( aField->IsInput() && aField->IsData() && ( aField->UsagePage() |
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188 == EUsagePageTelephony ) ) |
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189 { |
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190 const TInt KHookSwitch = 0x20; |
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191 const TInt KPhoneMute = 0x2F; |
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192 #ifdef _DEBUG |
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193 for ( TInt i = 0; i < aField->UsageCount(); i++ ) |
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194 { |
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195 TRACE_INFO((_L("[HID]\tTHeadsetFinder::IsTelephony: \ |
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196 Usage %d: %02x"),i,aField->Usage(i))); |
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197 } |
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198 #endif |
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199 if ( ( aField->UsageMin() <= KPhoneMute ) && ( aField->UsageMax() |
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200 >= KHookSwitch ) ) |
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201 { |
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202 TRACE_INFO(_L("[HID]\tTHeadsetFinder::IsTelephony: Telephony \ |
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203 field found")); |
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204 found = ETrue; |
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205 } |
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206 } |
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207 return found; |
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208 } |
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209 |
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210 // --------------------------------------------------------------------------- |
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211 // EmptyList() |
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212 // --------------------------------------------------------------------------- |
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213 // |
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214 void THeadsetFinder::EmptyList() |
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215 { |
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216 iFieldList.Reset(); |
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217 } |
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218 |
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219 // --------------------------------------------------------------------------- |
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220 // FieldCount() |
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221 // --------------------------------------------------------------------------- |
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222 // |
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223 TInt THeadsetFinder::FieldCount() |
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224 { |
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225 return iFieldList.Count(); |
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226 } |
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227 |
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228 // --------------------------------------------------------------------------- |
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229 // GetFieldAtIndex() |
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230 // --------------------------------------------------------------------------- |
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231 // |
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232 CField* THeadsetFinder::GetFieldAtIndex( TInt aIndex ) |
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233 { |
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234 return iFieldList[aIndex]; |
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235 } |
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236 |
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237 // --------------------------------------------------------------------------- |
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238 // Found() |
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239 // --------------------------------------------------------------------------- |
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240 // |
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241 TBool THeadsetFinder::Found() const |
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242 { |
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243 return ( iFieldList.Count() != 0 ); |
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244 } |