1 /* |
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2 * Copyright (c) 2006-2007 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: ?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 IRAACPLAYER_H |
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20 #define IRAACPLAYER_H |
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21 |
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22 #include <audio.h> |
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23 #include <mdaaudiooutputstream.h> |
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24 |
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25 #include "ircontrolparams.h" |
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26 #include "irmediaenginedef.h" |
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27 #include "irmediaengineinterface.h" |
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28 |
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29 class CIRBufferContainer; |
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30 |
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31 //========================================class declaration CIRAACPlayer============================================ |
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32 |
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33 /** |
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34 * This class is the implementation of AAC/AAC+ format.This forms a part of |
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35 * media engine which is implemented as an ECom plugin. The interface class |
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36 * is irmediaengineinterface.h The mime type of mp3 is used to load this |
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37 * plugin mimetype : audio/aac or audio/accp This is to be passed as the |
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38 * default data while creation of player |
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39 * |
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40 * @code |
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41 * |
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42 * //mimetype is buffer with audio/aac or audio/aacp as data |
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43 * iPlayer = CIRMediaEngineInterface::NewL(mimetype); |
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44 * |
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45 * TConfig config; |
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46 * config.iVolume = xxxxxx; //some integer value between 0 and Maximum Volume |
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47 * TUint8* buffer; //is a buffer of size [KINPUT_BUFFER_SIZE] as defined in IRMediaEngineBuffer.h |
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48 * //this is should have filled buffer when you call Intialize |
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49 * CIRCtrlCmdObserver* aChannel; //command channel dll's instant |
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50 * TInt volume; |
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51 * iPlayer->Intialize(config,buffer,channel); |
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52 * iPlayer->Play();//to play |
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53 * iPlayer->Stop();//to stop |
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54 * iPlayer->SetVolume(volume);//set the volume |
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55 * iPlayer->Volume;// returns current volume |
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56 * iPlayer->MaxVolume();//return maximum volume |
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57 * iPlayer->StopPlayerBuffering();//stop buffering if required |
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58 * iPlayer->StartPlayerBuffering();//start buffering (incase if stop you can restart with this method) |
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59 * iPlayer->BufferFilled(); //should be called when the buffer given by player is return |
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60 * //this will mark the buffer as filled |
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61 * |
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62 * @endcode |
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63 * |
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64 */ |
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65 |
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66 NONSHARABLE_CLASS(CIRAACPlayer) : public CIRMediaEngineInterface, |
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67 public MMdaAudioOutputStreamCallback |
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68 { |
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69 public: |
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70 //Member Functions |
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71 /** |
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72 * Function : NewL |
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73 * function to return an instance of CIRAACPlayer |
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74 * Two phase constructor |
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75 * @return instance of CIRAACPlayer |
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76 */ |
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77 static CIRAACPlayer* NewL(); |
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78 |
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79 /** |
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80 * Function : NewLC |
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81 * function to creates an instance of CIRAACPlayer |
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82 * Two phase constructor |
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83 * @return instance of CIRAACPlayer |
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84 */ |
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85 static CIRAACPlayer* NewLC(); |
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86 |
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87 /** |
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88 * Function : ~CIRAACPlayer |
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89 * Default Destructor |
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90 */ |
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91 ~CIRAACPlayer(); |
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92 |
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93 //Function which control the play |
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94 |
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95 /** |
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96 * Function : Play |
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97 * function to which intiates the playing |
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98 */ |
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99 void Play(); |
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100 |
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101 /** |
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102 * Function : Stop |
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103 * function to stop the player |
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104 */ |
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105 void Stop(); |
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106 |
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107 //Function to control the volume |
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108 |
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109 /** |
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110 * Function : SetVolume |
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111 * function to set the volume, integer level of volume is the input |
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112 * @param integer level of volume is the input |
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113 */ |
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114 void SetVolume(TInt aVolume); |
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115 |
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116 /** |
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117 * Function : MaxVolume |
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118 * function to returns the maximum volume , integer value is the Output |
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119 * @return integer value is the Output |
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120 */ |
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121 TInt MaxVolume() const; |
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122 |
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123 /** |
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124 * Function : Volume |
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125 * function to returns the volume, integer level of voume is the Output |
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126 * @return integer value is the Output |
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127 */ |
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128 TInt Volume() const; |
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129 |
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130 /** |
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131 * Function: Intialize |
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132 * Set the codec type and sampling rate channel of stream |
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133 * This is set to initial settings which is required to start the player |
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134 * @param configuration infomation |
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135 * @param instance of data buffer, whose size is defined in IRMediaEngineBuffer.h |
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136 * @param instance of the channel through with information is sent to UI |
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137 */ |
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138 void Intialize(TConfig& aConfig,TUint8* aInitParams, |
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139 CIRCtrlCmdObserver* aChannel); |
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140 |
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141 /** |
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142 * Function: StopPlayerBuffering |
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143 * Function is used to freeze bufferring |
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144 */ |
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145 void StopPlayerBuffering(); |
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146 |
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147 /** |
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148 * Function: BufferFilled |
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149 * Function which is called when network gets the buffer filled with data |
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150 */ |
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151 void BufferFilled(); |
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152 |
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153 /** |
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154 * Function: GetAudioPlayer |
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155 * Function which is called To return the Current Audio Player |
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156 */ |
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157 CMdaAudioOutputStream* GetAudioPlayer(); |
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158 |
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159 private: |
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160 /** |
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161 * Function: CIRAACPlayer |
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162 * This function is the default constructor |
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163 */ |
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164 CIRAACPlayer(); |
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165 |
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166 /** |
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167 * Function: ConstructL |
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168 * Two phase constructor is used to intialize data members |
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169 */ |
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170 void ConstructL(); |
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171 |
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172 /** |
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173 * Function: CreatebufferL |
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174 * Create the buffers and allocates address for each buffers |
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175 * keeps them in buffer queue |
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176 */ |
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177 void CreateBufferL(); |
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178 |
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179 /** |
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180 * Function: ReCreateBufferL |
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181 * Function is used to recreate the buffer |
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182 */ |
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183 void ReCreateBufferL(); |
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184 |
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185 //Call back functions from MMdaAudioOutputStreamCallback |
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186 |
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187 /** |
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188 * Function: MaoscBufferCopied |
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189 * call back to implement for using CMdaAudioOutputStream |
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190 * Call as callback from the CMdaAudioOutputStream::WriteL |
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191 * after frame work copies the stream to buffer |
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192 * @param Error |
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193 * @param reference to buffer |
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194 */ |
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195 void MaoscBufferCopied(TInt aError, const TDesC8 &aBuffer); |
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196 |
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197 /** |
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198 * Function: MaoscPlayComplete |
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199 * call back to implement for using CMdaAudioOutputStream |
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200 * Call as callback from the CMdaAudioOutputStream::WriteL |
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201 * after play is completed |
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202 * @param aError |
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203 */ |
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204 void MaoscPlayComplete(TInt aError); |
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205 |
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206 /** |
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207 * Function: MaoscOpenComplete |
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208 * call back to implement for using CMdaAudioOutputStream |
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209 * Call as callback from the CMdaAudioOutputStream::Open |
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210 * @param aError |
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211 */ |
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212 void MaoscOpenComplete(TInt aError); |
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213 |
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214 /** |
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215 * Function: GetAACAudioProperties |
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216 * extract all the information to start the play from the stream |
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217 */ |
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218 void GetAACAudioProperties(); |
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219 |
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220 /** |
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221 * Function: DoFindnDecodeAACHeader |
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222 * Function return a non modifiable pointer descriptor of data buffer |
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223 */ |
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224 void DoFindnDecodeAACHeaderL(); |
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225 |
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226 /** |
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227 * Function: ReArrangeBuffer |
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228 * Function rearranges the buffer, and should be called after finding the header |
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229 * from the address of buffers specified, the data buffers are kept in sink queue and |
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230 * remaining buffers are discarded that is put into source queue. |
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231 * |
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232 * @param address of starting of header |
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233 */ |
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234 void ReArrangeBufferL(TUint8* aInput); |
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235 |
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236 |
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237 //data members |
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238 |
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239 private: |
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240 //Enum for Play State |
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241 enum TState |
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242 { |
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243 ENotReady, //Not ready to play |
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244 EReadyToPlay, //Ready to play |
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245 EPlaying //Playing |
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246 }; |
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247 |
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248 // Player state |
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249 TState iState; |
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250 |
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251 //For implement Player functionalities |
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252 |
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253 //player utility |
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254 CMdaAudioOutputStream* iAudioPlayer; |
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255 |
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256 //Temporary holder for buffer container |
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257 CIRBufferContainer* iTempBufferHolder; |
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258 |
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259 //Holds the address of data buffer which is to be played |
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260 TUint8* iTempbuffer; |
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261 |
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262 //This represents a large input buffer which takes the input |
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263 TUint8* iInputBufferPtr; |
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264 |
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265 //Instance of channel through with data is sent UI |
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266 CIRCtrlCmdObserver* iChannel; |
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267 |
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268 //Setting for sampling rate, channel |
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269 TMdaAudioDataSettings iSettings; |
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270 |
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271 //FourCC representation of the codec |
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272 TFourCC iDataType; |
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273 |
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274 //hold the configuration information |
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275 TConfig iConfig; |
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276 |
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277 //Hold the pointer to the buffer to be filled |
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278 TPtr8 iInputBuffer; |
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279 |
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280 //Contains Data to be played |
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281 TPtr8 iInput; |
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282 |
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283 //Queue of buffer which is filled |
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284 TSglQue<CIRBufferContainer> iSourceBufferQ; |
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285 |
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286 //Queue of buffer which is empty |
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287 TSglQue<CIRBufferContainer> iSinkBufferQ; |
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288 |
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289 //Holds the audio format data |
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290 TAudioFormatData iAudioInfo; |
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291 |
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292 //Holds the percentage of data in the buffer |
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293 TInt iBufferPercentage; |
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294 |
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295 // For First time play |
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296 TBool iFirstTime; |
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297 |
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298 //checks whether header is found or not |
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299 TBool iHeaderFound; |
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300 |
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301 //this bool indicates buffering is taking place initially or rebuffering |
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302 //mainly to intial parameter like volume during rebuffering |
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303 TBool iNeedReBuffering; |
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304 |
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305 //Indicates that it is a new player |
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306 TBool iNewPlayer; |
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307 |
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308 //This is used to StopPlayerBuffering |
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309 TBool iStopPlayerBuffering; |
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310 |
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311 //This is used to stop buffering if its rebuffering, set if stop function is called |
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312 //and reset when play function is called |
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313 TBool iStopState; |
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314 |
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315 //skips sending the error code during stop if stop internally |
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316 //is during play called |
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317 TBool iSkipPlayCompleted; |
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318 }; |
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319 |
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320 #endif //IRAACPLAYER_H |
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