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1 /* |
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2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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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 CMCEMEDIASOURCE_H |
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20 #define CMCEMEDIASOURCE_H |
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21 |
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22 // INCLUDES |
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23 #include <e32base.h> |
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24 |
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25 // DATA TYPES |
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26 typedef TUint TMceSourceType; |
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27 |
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28 // FORWARD DECLARATIONS |
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29 class RReadStream; |
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30 class RWriteStream; |
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31 class CMceComMediaSource; |
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32 class TMceSourceFactory; |
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33 class CMceMediaStream; |
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34 class TMceEvent; |
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35 class TMceMediaId; |
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36 class CMceManager; |
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37 |
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38 // CLASS DECLARATION |
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39 |
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40 /** |
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41 * Base class for the MCE media sources. |
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42 * |
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43 * Media sources represent the origin of data. |
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44 * CMceMediaSource puts it data through CMceMediaStream into |
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45 * CMceMediaSink. |
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46 * |
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47 * CMceMediaSource has a type that defines how it can connected to other |
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48 * sinks and streams. |
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49 * |
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50 * Enable and Disable operations to sinks are considered to be local, |
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51 * so they are not signalled to remote terminal. |
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52 * |
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53 * @lib mceclient.lib |
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54 */ |
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55 class CMceMediaSource: public CBase |
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56 { |
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57 public: // Destructor |
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58 |
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59 IMPORT_C ~CMceMediaSource(); |
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60 |
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61 public: // Functions |
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62 |
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63 /** |
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64 * Returns the type of the source. |
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65 * @return The type of the source. |
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66 */ |
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67 IMPORT_C TMceSourceType Type() const; |
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68 |
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69 /** |
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70 * Enables streaming explicitly. |
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71 */ |
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72 virtual void EnableL() = 0; |
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73 |
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74 /** |
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75 * Disables streaming explicitly. |
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76 */ |
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77 virtual void DisableL() = 0; |
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78 |
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79 /** |
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80 * Returns the state of the source. |
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81 * @return ETrue if enabled, EFalse if disabled. |
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82 */ |
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83 IMPORT_C TBool IsEnabled() const; |
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84 |
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85 |
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86 |
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87 public: //internal |
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88 |
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89 /** |
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90 * Initializes |
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91 * @param aParent the parent |
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92 */ |
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93 virtual void InitializeL( CMceMediaStream& aParent ); |
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94 |
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95 /** |
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96 * Initializes |
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97 * @param aManager the manager. Ownership is NOT transferred |
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98 */ |
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99 virtual void InitializeL( CMceManager* aManager ); |
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100 |
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101 /** |
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102 * Sets and gets reference count describing to how many |
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103 * streams source is associated |
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104 * @return reference count reference |
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105 */ |
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106 TInt& ReferenceCount(); |
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107 |
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108 |
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109 protected: |
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110 |
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111 /** |
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112 * C++ default constructor. |
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113 */ |
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114 CMceMediaSource(); |
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115 |
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116 /** |
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117 * Enables streaming explicitly. |
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118 */ |
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119 void DoEnableL(); |
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120 |
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121 /** |
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122 * Disables streaming explicitly. |
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123 */ |
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124 void DoDisableL(); |
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125 |
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126 |
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127 protected: // NOT owned data |
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128 |
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129 /** |
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130 * stream |
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131 */ |
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132 RPointerArray<CMceMediaStream> iStreams; |
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133 |
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134 |
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135 public: // stub data |
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136 |
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137 TBool iIsEnabled; |
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138 |
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139 TMceSourceType iType; |
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140 |
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141 TInt iReferenceCount; |
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142 |
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143 }; |
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144 |
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145 |
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146 #endif |