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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: Declaration for CBTSACStreamerController class. This class constructs and |
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15 * communicates with 'BT Audio Streamer' component to do RTP streaming. |
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16 |
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17 * |
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18 */ |
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19 |
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20 |
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21 #ifndef BTSAC_STREAMER_H |
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22 #define BTSAC_STREAMER_H |
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23 |
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24 // INCLUDES |
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25 |
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26 #include <btaudiostreamer.h> |
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27 #include <btaudiostreaminputbase.h> |
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28 #include <bluetoothav.h> // Protocol definitions, e.g., TSBCCodecCapabilities |
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29 #include "btsacActivePacketDropIoctl.h" |
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30 #include <SbcEncoderIntfc.h> // uuid of SBC Encoder |
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31 |
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32 |
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33 class MBTAudioAdaptationObserver |
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34 { |
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35 public: |
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36 virtual void NotifyError(TInt aError) = 0; |
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37 }; |
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38 |
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39 // CONSTANTS |
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40 |
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41 // DATA TYPES |
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42 |
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43 // FORWARD DECLARATIONS |
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44 |
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45 // CLASS DECLARATION |
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46 |
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47 /** |
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48 * |
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49 * |
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50 * |
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51 */ |
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52 |
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53 class TBitpoolData |
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54 { |
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55 public: |
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56 TInt iMaxBitpoolValue; |
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57 TInt iMaxDeviation; |
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58 //TInt iUpgradeDelay; |
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59 TInt iIndex; |
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60 TInt iDownBitpoolIndex; |
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61 TInt iUpBitpoolIndex; |
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62 TBool iMinimumMaxBitpool; |
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63 }; |
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64 |
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65 NONSHARABLE_CLASS(CBTSACStreamerController) : public CActive, MBTAudioErrorObserver, MActivePacketDropIoctlObserver |
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66 { |
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67 public: // Constructors and destructor |
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68 |
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69 /** |
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70 * Two-phased constructor. |
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71 * |
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72 * |
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73 * |
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74 */ |
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75 static CBTSACStreamerController* NewL(MBTAudioAdaptationObserver& aObserver); |
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76 |
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77 /** |
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78 * Destructor. |
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79 * |
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80 * |
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81 */ |
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82 virtual ~CBTSACStreamerController(); |
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83 |
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84 public: |
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85 // From MBTAudioErrorObserver |
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86 virtual TInt Error(const TInt aError); |
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87 |
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88 // From MActivePacketDropIoctlObserver |
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89 virtual void PacketsDropped(TInt aPacketCount); |
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90 |
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91 |
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92 public: // New functions |
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93 |
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94 /** |
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95 * |
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96 * |
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97 * @param aStatus |
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98 * @return None. |
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99 */ |
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100 TInt StartStream(RSocket& aSocket, TInt aFrameLength); |
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101 |
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102 /** |
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103 * |
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104 * |
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105 * @param aStatus |
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106 * @return None. |
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107 */ |
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108 TInt StopStream(); |
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109 |
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110 /** |
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111 * |
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112 * |
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113 * @param aStatus |
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114 * @return None. |
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115 */ |
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116 void ResetAudioInput(); |
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117 |
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118 /** |
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119 * |
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120 * |
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121 * @param aStatus |
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122 * @return None. |
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123 */ |
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124 TInt FillCapabilities( TSBCCodecCapabilities& aSbc ); |
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125 |
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126 /** |
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127 * |
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128 * |
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129 * @param aStatus |
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130 * @return None. |
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131 */ |
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132 TInt ConfigureSEP( TSBCCodecCapabilities& aDec ); |
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133 |
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134 /** |
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135 * |
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136 * |
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137 * @param aStatus |
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138 * @return None. |
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139 */ |
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140 TInt FrameLength() const; |
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141 |
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142 /** |
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143 * |
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144 * |
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145 * @param none |
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146 * @return TSBCCodecCapabilities. |
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147 */ |
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148 TSBCCodecCapabilities &GetCaps(); |
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149 |
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150 protected: // Functions from CActive |
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151 |
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152 /** |
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153 * RunL is called by framework after request is being completed. |
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154 * @param nones |
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155 * @return none |
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156 */ |
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157 void RunL(); |
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158 |
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159 /** |
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160 * DoCancel() has to be implemented by all the classes deriving CActive. |
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161 * Request cancellation routine. |
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162 * @param none |
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163 * @return none |
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164 */ |
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165 void DoCancel(); |
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166 |
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167 /** |
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168 * RunError is called if RunL() leaves |
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169 */ |
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170 TInt RunError(TInt aError); |
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171 |
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172 |
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173 private: // Data definitions |
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174 |
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175 enum TBTSACStreamingState |
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176 { |
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177 EStateStreaming, |
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178 EStateIdle, |
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179 EStateError |
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180 }; |
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181 |
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182 typedef enum EOngoingAction |
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183 { |
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184 ENone, |
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185 EErrorSending, |
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186 EDowngradeBitrate, |
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187 EUpgradeBitrate, |
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188 EStartStabilizingTimer, |
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189 EStabilize |
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190 }; |
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191 |
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192 private: |
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193 |
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194 /** |
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195 * C++ default constructor. |
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196 */ |
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197 CBTSACStreamerController(MBTAudioAdaptationObserver& aObserver); |
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198 |
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199 /** |
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200 * Symbian 2nd phase constructor. |
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201 * |
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202 * |
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203 * |
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204 * |
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205 */ |
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206 void ConstructL(); |
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207 |
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208 void CheckAndAdjustBitpool(TSBCCodecCapabilities& aDec); |
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209 TInt GetMatchingCaps(TSBCCodecCapabilities& aCaps); |
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210 TInt ConfigureSEPBitpool(EOngoingAction aAction); |
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211 void DoSelfComplete(EOngoingAction aAction, TInt aError); |
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212 |
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213 void SetBlockLen(TSBCCodecCapabilities& aCap, TUint8 aBlockLen); |
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214 TInt GetBlockLen(TSBCCodecCapabilities& aCap) const; |
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215 void SetSamplingFrequency(TSBCCodecCapabilities& aCap, TUint8 aFrequency); |
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216 TInt GetSamplingFrequency(TSBCCodecCapabilities& aCap) const; |
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217 TInt FrameLengthFormula(TSBCCodecCapabilities& aCap) const; |
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218 TInt GetNumOfChannels(TSBCCodecCapabilities& aCap) const; |
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219 void SetNumOfSubbands(TSBCCodecCapabilities& aCap, TUint8 aNumOfSubbands); |
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220 TInt GetNumOfSubbands(TSBCCodecCapabilities& aCap) const; |
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221 void SetBitpoolValues(TSBCCodecCapabilities& aCap); |
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222 void SetAllocationMethod(TSBCCodecCapabilities& aCap, TUint8 aAllocationMethod); |
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223 void SetChannelMode(TSBCCodecCapabilities& aCap, TUint8 aChannelMode); |
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224 |
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225 TInt SetCurrentBitpoolData(TInt aBitpool); |
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226 void InitializeBitpoolDataL(); |
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227 void ReorganizeBitpoolTable(TInt aNegotiatedMaxBitpool); |
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228 TBitpoolData* GetBitpoolData(TInt aIndex); |
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229 TInt GetIndex(TInt aBitpool); |
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230 TBool IndexValid(TInt aIndex); |
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231 |
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232 private: // Data |
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233 |
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234 CBTAudioStreamer* iBTStreamer; // Bluetooth Audio Streamer component |
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235 CBTAudioStreamInputBase* iAudioInput; |
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236 TBTSACStreamingState iState; |
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237 EOngoingAction iOngoingAction; |
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238 TSBCCodecCapabilities iLocalCap; // local copy of Audio Adapatation capabilities |
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239 TSBCCodecCapabilities iMatchCap; // local copy of capabilites used to configure accessory |
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240 RLibrary iLib; // for loading BTAudioStreamer and BTAudioAdaptation dll |
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241 TInt iCurrentBitrate; |
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242 TInt iCurrentFrameLength; |
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243 RTimer iTimer; |
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244 CActivePacketDropIoctl* iPacketDropIoctl; |
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245 RThread iThread; |
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246 CSbcEncoderIntfc *iEncoderCI; |
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247 MBTAudioAdaptationObserver& iObserver; |
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248 TInt iTotalNbrOfDroppedPackets; |
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249 TTime iFirstPacketDropTime; |
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250 TInt iPacketDropDeviation; |
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251 RArray<TBitpoolData> iBitpoolData; |
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252 TBitpoolData* iCurrentBitpoolData; |
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253 }; |
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254 |
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255 |
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256 #endif // BTSAC_STREAMER_H |
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257 |
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258 // End of File |