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: Utility API for client to access TTS functionality. |
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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 #ifndef NSSTTSUTILITY_H |
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20 #define NSSTTSUTILITY_H |
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21 |
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22 // INCLUDES |
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23 #include <mdaaudiosampleplayer.h> |
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24 #include <nssttscommon.h> |
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25 #include <nssttsutilitybase.h> |
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26 #include <nssttsutilityobserver.h> |
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27 |
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28 // FORWARD DECLARATIONS |
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29 class CTtsUtilityBody; |
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30 |
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31 // CLASS DECLARATION |
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32 |
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33 /** |
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34 * Tts Utility interface. |
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35 * |
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36 * @lib nssttsutility.lib |
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37 * @since 2.8 |
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38 */ |
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39 class CTtsUtility : public CBase, public MTtsUtilityBase |
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40 { |
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41 public: // Constructors and destructor |
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42 |
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43 /** |
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44 * Two-phased constructor. |
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45 * |
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46 * @since 2.8 |
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47 * @param "MTtsClientUtilityObserver& aObserver" Observer reference. |
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48 * @return Pointer to created object. |
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49 */ |
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50 IMPORT_C static CTtsUtility* NewL( MTtsClientUtilityObserver& aObserver ); |
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51 |
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52 /** |
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53 * Destructor. |
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54 */ |
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55 IMPORT_C virtual ~CTtsUtility(); |
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56 |
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57 /* |
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58 * Creates instance of CTtsUtility |
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59 * Needed when dynamically loading nssttsutility.dll |
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60 * Direct users of nssttsutility.lib should not use this. |
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61 * Returns M-class pointer to MTtsUtilityBase as TAny* |
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62 * |
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63 * @return Created instance |
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64 * @see CreateInstanceSecondPhaseL |
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65 */ |
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66 IMPORT_C static TAny* CreateInstanceL(); |
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67 |
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68 /** |
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69 * Does the second phase initialization of CTtsUtility |
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70 * Needed when dynamically loading nssttsutility.dll |
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71 * Direct users of nssttsutility.lib should not use this |
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72 * |
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73 * @param "const MTtsClientUtilityObserver& aObserver" Observer reference |
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74 */ |
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75 IMPORT_C void CreateInstanceSecondPhaseL( MTtsClientUtilityObserver& aObserver ); |
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76 |
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77 public: // New functions in 3.2 |
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78 |
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79 /** |
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80 * Opens connection to a specific plugin. |
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81 * |
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82 * @param "TUid aUid" Plugin UID which will be instantiated |
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83 * @since 3.2 |
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84 */ |
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85 IMPORT_C void OpenPluginL( TUid aUid ); |
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86 |
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87 /** |
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88 * Lists UIDs of available Text-To-Speech plugins. |
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89 * |
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90 * @param "RArray<TUid>& aUids" Output parameter which will contain the |
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91 * list of plugin UIDs after function call. |
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92 * @since 3.2 |
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93 */ |
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94 IMPORT_C void ListPluginsL( RArray<TUid>& aUids ); |
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95 |
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96 /** |
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97 * Sets the default style parameters for synthesis. |
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98 * |
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99 * @param "const TTtsStyle& aStyle" Style created by the client |
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100 * @since 3.2 |
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101 */ |
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102 IMPORT_C void SetDefaultStyleL( const TTtsStyle& aStyle ); |
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103 |
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104 /** |
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105 * Returns the registered default style |
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106 * |
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107 * @return Style reference |
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108 * @leave KErrNotReady if no plugin is loaded to handle the function call |
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109 * @since 3.2 |
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110 */ |
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111 IMPORT_C TTtsStyle& DefaultStyleL(); |
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112 |
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113 /** |
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114 * Sets the speaking rate of synthesizer. |
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115 * |
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116 * @param TInt aRate Speaking rate value |
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117 * @leave KErrNotSupported if synthesizer does not support speaking rate setting |
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118 * @since 3.2 |
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119 */ |
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120 IMPORT_C void SetSpeakingRateL( TInt aRate ); |
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121 |
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122 /** |
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123 * Returns the current speaking rate value. |
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124 * |
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125 * @return Speaking rate value |
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126 * @leave KErrNotSupported if synthesizer does not support speaking rate setting |
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127 * @leave KErrNotReady if no plugin is loaded to handle the function call |
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128 * @since 3.2 |
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129 */ |
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130 IMPORT_C TInt SpeakingRateL(); |
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131 |
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132 /** |
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133 * Open a descriptor ready for playback |
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134 * |
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135 * @param "const TDesC& aDescriptor" Descriptor containing the text to be synthesized. |
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136 * @since 3.2 |
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137 */ |
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138 IMPORT_C void OpenDesL( const TDesC& aDescriptor ); |
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139 |
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140 /** |
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141 * Opens a descriptor and plays it. |
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142 * |
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143 * @param "const TDesC& aDescriptor" Descriptor to play |
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144 * @since 3.2 |
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145 */ |
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146 IMPORT_C void OpenAndPlayDesL( const TDesC& aDescriptor ); |
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147 |
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148 /** |
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149 * Returns the list of supported languages. |
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150 * |
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151 * @param "RArray<TLanguage>& aLanguages" Output parameter which contains the languages |
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152 * @leave KErrNotReady if no plugin is loaded to handle the function call |
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153 * @since 3.2 |
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154 */ |
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155 IMPORT_C void GetSupportedLanguagesL( RArray<TLanguage>& aLanguages ); |
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156 |
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157 /** |
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158 * Returns the list of supported voices for a certain language. |
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159 * |
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160 * @param "TLanguage aLanguage" Language |
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161 * @param "RArray<TTtsStyle>& aVoices" Output parameter which contains the voices |
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162 * @leave KErrNotReady if no plugin is loaded to handle the function call |
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163 * @since 3.2 |
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164 */ |
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165 IMPORT_C void GetSupportedVoicesL( TLanguage aLanguage, RArray<TTtsStyle>& aVoices ); |
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166 |
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167 /** |
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168 * Sets data sink to be a file for the next synthesis event |
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169 * |
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170 * @param "RFile& aFile" Open file handle where the output is written |
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171 * @leave KErrNotReady if no plugin is loaded to handle the function call |
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172 * @since 3.2 |
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173 */ |
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174 IMPORT_C void SetOutputFileL( const RFile& aFile ); |
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175 |
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176 public: // New functions |
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177 |
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178 /** |
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179 * Adds new style to style collection. |
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180 * |
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181 * @since 2.8 |
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182 * @param "TTtsStyle& aStyle" Reference to style. |
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183 * @return Assigned style ID. |
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184 */ |
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185 IMPORT_C TTtsStyleID AddStyleL( const TTtsStyle& aStyle ); |
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186 |
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187 /** |
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188 * Deletes style from the style collection. |
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189 * |
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190 * @since 2.8 |
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191 * @param "TTtsStyle& aStyle" Reference to style. |
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192 * @return Error code. |
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193 */ |
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194 IMPORT_C TInt DeleteStyle( TTtsStyleID aID ); |
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195 |
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196 /** |
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197 * Returns number of styles. |
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198 * |
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199 * @since 2.8 |
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200 * @return Number of styles. |
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201 */ |
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202 IMPORT_C TUint16 NumberOfStyles(); |
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203 |
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204 /** |
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205 * Returns style based on style ID |
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206 * |
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207 * @since 2.8 |
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208 * @param "TTtsStyleID aStyleID" Style identifier. |
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209 * @return Reference to found style. |
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210 */ |
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211 IMPORT_C TTtsStyle& StyleL( TTtsStyleID aStyleID ); |
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212 |
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213 /** |
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214 * Returns style based on index. |
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215 * |
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216 * @since 2.8 |
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217 * @param "TUint16 aIndex" Index. |
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218 * @return Reference to found style. |
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219 */ |
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220 IMPORT_C TTtsStyle& StyleL( TUint16 aIndex ); |
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221 |
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222 /** |
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223 * Begins playback of the initialised audio sample at the current volume |
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224 * and priority levels. |
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225 * |
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226 * When playing of the audio sample is complete, successfully or |
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227 * otherwise, the callback function |
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228 * <code>MMdaAudioPlayerCallback::MapcPlayComplete()</code> is |
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229 * called. |
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230 * |
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231 * @since 2.8 |
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232 */ |
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233 IMPORT_C void Play(); |
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234 |
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235 /** |
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236 * Stops playback of the audio sample as soon as possible. |
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237 * |
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238 * If the audio sample is playing, playback is stopped as soon as |
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239 * possible. If playback is already complete, nothing further happens as |
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240 * a result of calling this function. The callback function |
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241 * <code>MMdaAudioPlayerCallback::MapcPlayComplete()</code> is not |
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242 * called. |
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243 * |
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244 * @since 2.8 |
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245 */ |
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246 IMPORT_C void Stop(); |
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247 |
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248 /** |
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249 * Changes the current playback volume to a specified value. |
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250 * |
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251 * The volume can be changed before or during playback and is effective |
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252 * immediately. The function raises a CMdaAudioPlayerUtility 1 panic if |
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253 * the audio player utility is not initialised. |
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254 * |
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255 * @since 2.8 |
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256 * @param "TInt aVolume" |
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257 * The volume setting. This can be any value from zero to |
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258 * the value returned by a call to |
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259 * <code>CMdaAudioPlayerUtility::MaxVolume()</code>. |
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260 * Setting a zero value mutes the sound. Setting the |
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261 * maximum value results in the loudest possible sound. |
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262 */ |
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263 IMPORT_C void SetVolume( TInt aVolume ); |
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264 |
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265 /** |
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266 * Sets the number of times the audio sample is to be repeated during the |
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267 * playback operation. |
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268 * |
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269 * A period of silence can follow each playing of the sample. The audio |
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270 * sample can be repeated indefinitely. |
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271 * |
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272 * @since 2.8 |
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273 * @param "TInt aRepeatNumberOfTimes" |
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274 * The number of times the audio sample, together with |
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275 * the trailing silence, is to be repeated. If this is |
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276 * set to <code>KMdaRepeatForever</code>, then the audio |
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277 * sample, together with the trailing silence, is |
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278 * repeated indefinitely or until <code>Stop()</code> is |
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279 * called. If this is set to zero, then the audio sample |
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280 * is not repeated. |
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281 * @param "const TTimeIntervalMicroSeconds& aTrailingSilence" |
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282 * The time interval of the trailing silence. |
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283 */ |
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284 IMPORT_C void SetRepeats( TInt aRepeatNumberOfTimes, |
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285 const TTimeIntervalMicroSeconds& aTrailingSilence ); |
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286 |
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287 /** |
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288 * Returns the duration of the audio sample. |
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289 * |
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290 * The function raises a CMdaAudioPlayerUtility 1 panic if the audio |
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291 * player utility is not initialised. |
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292 * |
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293 * @since 2.8 |
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294 * @returns "TTimeIntervalMicroSeconds&" |
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295 * The duration in microseconds |
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296 */ |
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297 IMPORT_C const TTimeIntervalMicroSeconds& Duration(); |
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298 |
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299 /** |
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300 * Returns an integer representing the maximum volume. |
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301 * |
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302 * This is the maximum value which can be passed to |
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303 * <code>CMdaAudioPlayerUtility::SetVolume()</code>. The function raises a |
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304 * CMdaAudioPlayerUtility 1 panic if the audio player utility is not |
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305 * initialised. |
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306 * |
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307 * @since 2.8 |
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308 * @returns "TInt" |
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309 * The maximum volume. This value is platform dependent |
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310 * but is always greater than or equal to one. |
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311 */ |
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312 IMPORT_C TInt MaxVolume(); |
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313 |
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314 /** |
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315 * Opens a descriptor source and plays it. |
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316 * |
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317 * @since 2.8 |
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318 * @param "TDesC8& aDescriptor" Descriptor to play (in UTF-8 format). |
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319 */ |
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320 IMPORT_C void OpenAndPlayDesL( const TDesC8& aDescriptor ); |
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321 |
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322 /** |
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323 * Opens a file source and plays it. |
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324 * |
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325 * @since 2.8 |
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326 * @param "TDesC& aFileName" File to play. |
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327 */ |
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328 IMPORT_C void OpenAndPlayFileL( const TDesC& aFileName ); |
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329 |
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330 /** |
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331 * Opens a parsed text source and plays it. |
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332 * |
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333 * @since 2.8 |
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334 * @param "CTtsParsedText& aText" Parsed text object to play. |
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335 */ |
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336 IMPORT_C void OpenAndPlayParsedTextL( CTtsParsedText& aText ); |
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337 |
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338 /** |
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339 * Open a clip from a file |
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340 * |
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341 * @since 2.8 |
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342 * @param "const TDesC& aFileName" |
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343 * File to open |
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344 * @leave Leaves with one of the system wide error codes if a problem is encountered |
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345 * opening the file |
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346 */ |
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347 IMPORT_C void OpenFileL( const TDesC& aFileName ); |
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348 |
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349 /** |
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350 * Open a clip from a descriptor |
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351 * |
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352 * @since 2.8 |
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353 * @param "const TDesC8& aDescriptor" |
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354 * Descriptor containing audio clip |
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355 * @leave Leaves with one of the system wide error codes if a problem is encountered |
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356 * opening the file |
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357 */ |
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358 IMPORT_C void OpenDesL( const TDesC8& aDescriptor ); |
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359 |
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360 /** |
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361 * Open parsed text source. |
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362 * |
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363 * @since 2.8 |
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364 * @param "CTtsParsedText& aText" Reference to parsed text object. |
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365 */ |
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366 IMPORT_C void OpenParsedTextL( CTtsParsedText& aText ); |
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367 |
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368 /** |
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369 * Pauses playback of text to speech |
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370 * |
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371 * @since 2.8 |
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372 * @returns One of the system-wide error codes |
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373 */ |
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374 IMPORT_C TInt Pause(); |
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375 |
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376 /** |
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377 * Closes the connection to the controller plugin. |
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378 * |
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379 * @since 2.8 |
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380 */ |
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381 IMPORT_C void Close(); |
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382 |
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383 /** |
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384 * Returns the current playback position in microseconds |
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385 * |
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386 * @since 2.8 |
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387 * @retval "TTimeIntervalMicroSeconds& aPosition" |
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388 * The current time position in microseconds from the start of the file |
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389 * @returns One of the global error codes |
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390 */ |
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391 IMPORT_C TInt GetPosition( TTimeIntervalMicroSeconds& aPosition ); |
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392 |
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393 /** |
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394 * Returns the current playback position in word index. |
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395 * |
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396 * @since 2.8 |
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397 * @retval "TInt& aWordIndex" The current position in words. |
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398 * @return Error code. |
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399 */ |
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400 IMPORT_C TInt GetPosition( TInt& aWordIndex ); |
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401 |
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402 /** |
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403 * Set the current playback position in microseconds from the start of the file |
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404 * |
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405 * @since 2.8 |
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406 * @param "TTimeIntervalMicroSeconds& aPosition" |
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407 * The position to move to in microseconds past the start of the file |
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408 */ |
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409 IMPORT_C void SetPosition( const TTimeIntervalMicroSeconds& aPosition ); |
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410 |
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411 /** |
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412 * Set the current playback position in word index. |
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413 * |
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414 * @since 2.8 |
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415 * @param "TInt aWordIndex" Playback position. |
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416 */ |
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417 IMPORT_C void SetPosition( TInt aWordIndex ); |
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418 |
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419 /** |
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420 * |
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421 * Set the priority for playback. This is used to arbitrate between multiple |
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422 * objects trying to access a single sound device |
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423 * |
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424 * @since 2.8 |
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425 * @param "TInt aPriority" Audio priority for playback |
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426 * @param "TMdaPriorityPreference aPref" Preference value for playback |
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427 * |
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428 * @returns "TInt" One of the global error codes |
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429 */ |
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430 IMPORT_C TInt SetPriority( TInt aPriority, TMdaPriorityPreference aPref ); |
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431 |
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432 /** |
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433 * Returns the current playback volume |
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434 * |
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435 * @since 2.8 |
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436 * @retval "TInt& aVolume" |
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437 * A volume value between 0 and the value returned by <code>MaxVolume()</code> |
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438 * @returns "TInt" One of the global error codes |
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439 */ |
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440 IMPORT_C TInt GetVolume( TInt& aVolume ); |
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441 |
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442 /** |
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443 * Sets the current playback balance |
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444 * |
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445 * @since 2.8 |
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446 * @param "TInt& aBalance" |
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447 * A value between <code>KMMFBalanceMaxLeft</code> |
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448 * and <code>KMMFBalanceMaxRight</code>. The default value is |
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449 * <code>KMMFBalanceCenter</code> |
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450 * @returns "TInt" One of the global error codes |
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451 */ |
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452 IMPORT_C TInt SetBalance( TInt aBalance = KMMFBalanceCenter ); |
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453 |
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454 /** |
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455 * Returns the current playback balance |
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456 * |
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457 * @since 2.8 |
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458 * @retval "TInt& aBalance" |
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459 * A value between <code>KMMFBalanceMaxLeft</code> |
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460 * and <code>KMMFBalanceMaxRight</code> |
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461 * @returns "TInt" One of the global error codes |
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462 */ |
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463 IMPORT_C TInt GetBalance( TInt& aBalance ); |
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464 |
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465 /** |
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466 * Send a synchronous custom command to the controller |
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467 * |
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468 * @since 2.8 |
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469 * @param "aDestination" "The destination of the message, consisting of the uid of |
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470 * the interface of this message." |
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471 * @param "aFunction" "The function number to indicate which function is to be called |
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472 * on the interface defined in the aDestination parameter." |
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473 * @param "aDataTo1" "A reference to the first chunk of data to be copied to the controller |
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474 * framework. The exact contents of the data are dependent on the |
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475 * interface being called. Can be KNullDesC8." |
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476 * @param "aDataTo2" "A reference to the second chunk of data to be copied to the controller |
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477 * framework. The exact contents of the data are dependent on the |
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478 * interface being called. Can be KNullDesC8." |
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479 * @param "aDataFrom" "A reference to an area of memory to which the controller framework will |
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480 * write any data to be passed back to the client. Can't be KNullDesC8." |
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481 * @return "The result of the request. Exact range of values is dependent on the interface." |
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482 */ |
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483 IMPORT_C TInt CustomCommandSync( const TMMFMessageDestinationPckg& aDestination, |
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484 TInt aFunction, |
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485 const TDesC8& aDataTo1, |
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486 const TDesC8& aDataTo2, |
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487 TDes8& aDataFrom); |
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488 /** |
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489 * Send a synchronous custom command to the controller |
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490 * |
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491 * @since 2.8 |
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492 * @param "aDestination" "The destination of the message, consisting of the uid of |
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493 * the interface of this message." |
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494 * @param "aFunction" "The function number to indicate which function is to be called |
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495 * on the interface defined in the aDestination parameter." |
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496 * @param "aDataTo1" "A reference to the first chunk of data to be copied to the controller |
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497 * framework. The exact contents of the data are dependent on the |
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498 * interface being called. Can be KNullDesC8." |
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499 * @param "aDataTo2" "A reference to the second chunk of data to be copied to the controller |
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500 * framework. The exact contents of the data are dependent on the |
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501 * interface being called. Can be KNullDesC8." |
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502 * @return "The result of the request. Exact range of values is dependent on the interface." |
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503 */ |
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504 IMPORT_C TInt CustomCommandSync( const TMMFMessageDestinationPckg& aDestination, |
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505 TInt aFunction, |
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506 const TDesC8& aDataTo1, |
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507 const TDesC8& aDataTo2 ); |
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508 /** |
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509 * Send a asynchronous custom command to the controller |
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510 * Note: This method will return immediately. The RunL of the active object owning the |
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511 * <code>aStatus<\code> parameter will be called when the command is completed by the |
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512 * controller framework. |
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513 * |
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514 * @since 2.8 |
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515 * @param "aDestination" "The destination of the message, consisting of the uid of |
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516 * the interface of this message." |
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517 * @param "aFunction" "The function number to indicate which function is to be called |
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518 * on the interface defined in the aDestination parameter." |
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519 * @param "aDataTo1" "A reference to the first chunk of data to be copied to the controller |
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520 * framework. The exact contents of the data are dependent on the |
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521 * interface being called. Can be KNullDesC8." |
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522 * @param "aDataTo2" "A reference to the second chunk of data to be copied to the controller |
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523 * framework. The exact contents of the data are dependent on the |
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524 * interface being called. Can be KNullDesC8." |
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525 * @param "aDataFrom" "A reference to an area of memory to which the controller framework will |
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526 * write any data to be passed back to the client. Can't be KNullDesC8." |
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527 * @param "aStatus" "The TRequestStatus of an active object. This will contain the |
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528 * result of the request on completion. The exact range of |
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529 * result values is dependent on the interface." |
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530 */ |
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531 IMPORT_C void CustomCommandAsync( const TMMFMessageDestinationPckg& aDestination, |
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532 TInt aFunction, |
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533 const TDesC8& aDataTo1, |
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534 const TDesC8& aDataTo2, |
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535 TDes8& aDataFrom, |
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536 TRequestStatus& aStatus ); |
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537 /** |
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538 * Send a asynchronous custom command to the controller |
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539 * Note: This method will return immediately. The RunL of the active object owning the |
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540 * <code>aStatus<\code> parameter will be called when the command is completed by the |
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541 * controller framework. |
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542 * |
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543 * @since 2.8 |
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544 * @param "aDestination" "The destination of the message, consisting of the uid of |
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545 * the interface of this message." |
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546 * @param "aFunction" "The function number to indicate which function is to be called |
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547 * on the interface defined in the aDestination parameter." |
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548 * @param "aDataTo1" "A reference to the first chunk of data to be copied to the controller |
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549 * framework. The exact contents of the data are dependent on the |
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550 * interface being called. Can be KNullDesC8." |
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551 * @param "aDataTo2" "A reference to the second chunk of data to be copied to the controller |
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552 * framework. The exact contents of the data are dependent on the |
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553 * interface being called. Can be KNullDesC8." |
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554 * @param "aStatus" "The TRequestStatus of an active object. This will contain the |
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555 * result of the request on completion. The exact range of |
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556 * result values is dependent on the interface." |
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557 */ |
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558 IMPORT_C void CustomCommandAsync( const TMMFMessageDestinationPckg& aDestination, |
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559 TInt aFunction, |
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560 const TDesC8& aDataTo1, |
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561 const TDesC8& aDataTo2, |
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562 TRequestStatus& aStatus ); |
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563 |
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564 private: |
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565 |
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566 /** |
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567 * C++ default constructor. |
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568 * |
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569 * @since 2.8 |
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570 */ |
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571 CTtsUtility(); |
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572 |
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573 /** |
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574 * By default Symbian 2nd phase constructor is private. |
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575 * |
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576 * @since 2.8 |
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577 * @param "MTtsClientUtilityObserver& aObserver" Observer reference. |
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578 */ |
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579 void ConstructL( MTtsClientUtilityObserver& aObserver ); |
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580 |
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581 // Prohibit copy constructor |
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582 CTtsUtility( const CTtsUtility& ); |
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583 // Prohibit assigment operator |
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584 CTtsUtility& operator=( const CTtsUtility& ); |
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585 |
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586 private: // Data |
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587 |
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588 // Real implementation |
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589 CTtsUtilityBody* iBody; |
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590 |
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591 // Reserved pointer for future extension |
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592 TAny* iReserved; |
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593 |
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594 }; |
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595 |
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596 #endif // NSSTTSUTILITY_H |
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597 |
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598 // End of File |
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