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1 /* |
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2 * Copyright (c) 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 the License "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: Common interface for sources* |
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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 MCRPACKETSOURCEBASE_H |
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20 #define MCRPACKETSOURCEBASE_H |
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21 |
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22 // INCLUDES |
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23 #include "CCRStreamingSession.h" |
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24 #include "MCRPacketSource.h" |
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25 #include "MCRConnectionObserver.h" |
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26 |
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27 // CONSTANTS |
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28 // None |
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29 |
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30 // MACROS |
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31 // None |
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32 |
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33 // DATA TYPES |
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34 // None |
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35 |
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36 // FORWARD DECLARATIONS |
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37 // None |
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38 |
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39 // CLASS DECLARATION |
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40 // None |
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41 |
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42 /** |
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43 * Interface to source. |
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44 * |
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45 * @lib CommonRecordingEngine.lib |
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46 * @since Series 60 3.0 |
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47 */ |
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48 class CCRPacketSourceBase : public CBase, |
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49 public MCRPacketSource |
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50 { |
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51 |
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52 public: // Constructors and destructors |
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53 |
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54 /** |
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55 * Destructor |
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56 */ |
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57 virtual ~CCRPacketSourceBase(); |
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58 |
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59 public: // Methods from base classes |
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60 |
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61 /** |
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62 * From MCRPacketSource. |
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63 * Method for setting buffers to packet source. |
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64 * @since Series 60 3.0 |
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65 * @param aBuffer is buffer to be set. |
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66 * @return none. |
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67 */ |
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68 virtual void SetBuffer( CCRPacketBuffer* aBuffer ); |
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69 |
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70 /** |
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71 * From MCRPacketSource. |
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72 * Method for acquiring sdp. |
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73 * @since Series 60 3.0 |
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74 * @param aSdp is string pointer that will be .Set() to contain the sdp. |
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75 * If no sdp is available no .Set() will occur. |
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76 * @return KErrNotReady if no sdp available. |
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77 */ |
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78 virtual TInt GetSdp( TPtrC8& aSdp ) = 0; |
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79 |
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80 /** |
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81 * From MCRPacketSource. |
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82 * Method for acquiring (almost) up-to-date sequence and ts numbers. |
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83 * @since Series 60 3.0 |
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84 * @param aAudioSeq is reference to TUint that will be set by this |
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85 * method to contain latest available sequence number for |
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86 * audio stream being received via this packet source. |
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87 * @param aAudioTS rtp timestamp for audio. |
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88 * @param aVideoSeq rtp seq for video. If no video, value will not be touched. |
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89 * @param aVideoTS rtp ts for video. |
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90 * @return KErrNone if data available. |
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91 */ |
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92 virtual TInt SeqAndTS( TUint& aAudioSeq, |
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93 TUint& aAudioTS, |
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94 TUint& aVideoSeq, |
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95 TUint& aVideoTS ); |
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96 |
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97 /** |
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98 * From MCRPacketSource. |
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99 * Method for ordering "play" for packet source. |
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100 * @since Series 60 3.0 |
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101 * @param aStartPos is start position in seconds. |
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102 * @param aEndPos is end position in seconds. |
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103 * @return a system wide error code. |
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104 */ |
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105 virtual TInt Play( const TReal& aStartPos, |
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106 const TReal& aEndPos ); |
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107 |
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108 /** |
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109 * From MCRPacketSource. |
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110 * Method for pausing play from source. |
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111 * @since Series 60 3.0 |
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112 * @param none. |
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113 * @return a system wide error code. |
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114 */ |
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115 virtual TInt Pause(); |
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116 |
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117 /** |
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118 * From MCRPacketSource. |
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119 * Method for stopping play from source. |
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120 * @since Series 60 3.0 |
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121 * @param none. |
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122 * @return a system wide error code. |
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123 */ |
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124 virtual TInt Stop(); |
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125 |
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126 /** |
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127 * From MCRPacketSource. |
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128 * Setter for current position. |
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129 * @since Series 60 3.0 |
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130 * @param aPosition a postion of playback. |
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131 * @return a system wide error code. |
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132 */ |
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133 virtual TInt SetPosition( const TInt64 aPosition ); |
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134 |
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135 /** |
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136 * From MCRPacketSource. |
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137 * Getter for current position. |
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138 * @since Series 60 3.0 |
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139 * @param aPosition a postion of playback. |
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140 * @param aDuration a duration of playback. |
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141 * @return a system wide error code. |
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142 */ |
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143 virtual TInt GetPosition( TInt64& aPosition, |
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144 TInt64& aDuration ); |
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145 |
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146 /** |
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147 * From MCRPacketSource. |
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148 * Method for getting range of stream. If no range/duration |
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149 * is available this method will set the return values to |
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150 * 0.0,-1.0 and that may be quite normal state live streams. |
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151 * @since Series 60 3.0 |
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152 * @param aLower is where to start from. |
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153 If no value available, value of aLower must be set to 0. |
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154 * @param aUpper is where to stop. Negative values mean eternity. |
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155 * @return none. |
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156 */ |
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157 virtual void GetRange( TReal& aLower, |
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158 TReal& aUpper ); |
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159 |
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160 /** |
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161 * From MCRPacketSource. |
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162 * Post action after source initialized. |
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163 * @since Series 60 3.0 |
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164 * @param none. |
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165 * @return none. |
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166 */ |
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167 virtual void PostActionL(); |
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168 |
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169 /** |
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170 * From MCRPacketSource. |
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171 * Method for requesting more packets to buffer. |
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172 * @since Series 60 3.0 |
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173 * @param none. |
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174 * @return none. |
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175 */ |
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176 virtual void Restore(); |
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177 |
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178 public: // New methods |
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179 |
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180 /** |
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181 * Method that owner of source may utilitze to distinguish |
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182 * between sources |
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183 * @since Series 60 3.0 |
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184 * @param none. |
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185 * @return Id that may have been set. |
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186 */ |
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187 virtual CCRStreamingSession::TCRSourceId Id( void ) const; |
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188 |
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189 /** |
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190 * Registers connection observer. |
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191 * @since Series 60 3.0 |
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192 * @param aObserver aObserver. |
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193 * @return none. |
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194 */ |
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195 virtual void RegisterConnectionObs( MCRConnectionObserver* aObserver ); |
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196 |
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197 protected: // Constructors and destructors |
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198 |
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199 /** |
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200 * Default constructor |
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201 */ |
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202 CCRPacketSourceBase( CCRStreamingSession& aSession, |
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203 CCRStreamingSession::TCRSourceId aSourceId ); |
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204 |
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205 protected: // Data |
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206 |
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207 /** |
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208 * Pointer to streaming session that owns us. |
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209 */ |
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210 CCRStreamingSession& iOwningSession; |
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211 |
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212 /** |
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213 * Buffer used by sources. |
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214 */ |
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215 CCRPacketBuffer* iBuffer; |
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216 |
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217 /** |
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218 * Source id, set by owner |
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219 */ |
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220 const CCRStreamingSession::TCRSourceId iSourceId; |
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221 |
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222 }; |
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223 |
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224 #endif // MCRPACKETSOURCEBASE_H |
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225 |
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226 // End of File |