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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: Contains an implementation of CBTAudioStreamer class. |
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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 #include <bt_sock.h> |
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20 #include <in_sock.h> |
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21 |
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22 #include "btaudiostreamerdebug.h" |
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23 #include "btaudiostreamer.h" |
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24 #include "btaudiostreamsender.h" |
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25 |
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26 const TInt KL2CAPDefaultMTUSize = 672; |
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27 |
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28 // --------------------------------------------------------------------------- |
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29 // Constructor. |
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30 // --------------------------------------------------------------------------- |
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31 // |
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32 CBTAudioStreamer::CBTAudioStreamer() : iStarted(EFalse) |
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33 { |
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34 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::CBTAudioStreamer() ->"))); |
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35 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::CBTAudioStreamer() <-"))); |
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36 } |
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37 |
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38 // --------------------------------------------------------------------------- |
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39 // Static factory method. |
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40 // --------------------------------------------------------------------------- |
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41 // |
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42 EXPORT_C CBTAudioStreamer* CBTAudioStreamer::NewL() |
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43 { |
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44 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NewL() ->"))); |
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45 CBTAudioStreamer* self = new (ELeave) CBTAudioStreamer(); |
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46 CleanupStack::PushL(self); |
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47 self->ConstructL(); |
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48 CleanupStack::Pop(self); |
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49 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NewL() <-"))); |
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50 return self; |
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51 } |
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52 |
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53 // --------------------------------------------------------------------------- |
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54 // Symbian OS second phase contruction. |
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55 // --------------------------------------------------------------------------- |
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56 // |
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57 void CBTAudioStreamer::ConstructL() |
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58 { |
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59 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::ConstructL() ->"))); |
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60 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::ConstructL() <-"))); |
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61 } |
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62 |
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63 // --------------------------------------------------------------------------- |
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64 // Destructor. |
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65 // --------------------------------------------------------------------------- |
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66 // |
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67 CBTAudioStreamer::~CBTAudioStreamer() |
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68 { |
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69 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::~CBTAudioStreamer() ->"))); |
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70 Stop(); |
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71 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::~CBTAudioStreamer() <-"))); |
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72 } |
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73 |
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74 // --------------------------------------------------------------------------- |
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75 // This method prepares the streamer for incoming data. |
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76 // --------------------------------------------------------------------------- |
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77 // |
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78 EXPORT_C TInt CBTAudioStreamer::SetNewFrameLength(const TUint aFrameLength, const TUint aTargetBitrate) |
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79 { |
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80 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::SetNewFrameLength() ->"))); |
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81 TInt retVal = KErrGeneral; |
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82 if(iStarted != EFalse) |
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83 { |
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84 TInt outboundMTUSize; |
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85 // if(aSocket.GetOpt(KL2CAPGetOutboundMTU, KSolBtL2CAP, outboundMTUSize) != KErrNone) |
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86 { |
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87 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Failed to get outbound MTU size, using L2CAP default value"))); |
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88 outboundMTUSize = KL2CAPDefaultMTUSize; |
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89 } |
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90 retVal = iSender->SetNewFrameLength(outboundMTUSize, aFrameLength, aTargetBitrate); |
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91 } |
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92 else |
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93 { |
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94 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Error: Not started!"))); |
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95 retVal = KErrNotReady; |
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96 } |
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97 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::SetNewFrameLength() <-"))); |
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98 return retVal; |
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99 } |
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100 |
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101 // --------------------------------------------------------------------------- |
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102 // This method prepares the streamer for incoming data. |
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103 // --------------------------------------------------------------------------- |
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104 // |
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105 EXPORT_C void CBTAudioStreamer::StartL(RSocket& aSocket, const TUint aFrameLength, CBTAudioStreamInputBase *aAudioInput, const TUint aTargetBitrate) |
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106 { |
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107 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::StartL() ->"))); |
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108 iAudioInput = aAudioInput; |
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109 |
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110 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FPrint(_L("[BTAudioStreamer]\t Framelength: %d"), aFrameLength)); |
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111 |
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112 if(iStarted != EFalse) |
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113 { |
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114 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Error: Already started!"))); |
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115 User::Leave(KErrInUse); |
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116 } |
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117 |
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118 TInt inboundMTUSize = 0; |
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119 if(aSocket.GetOpt(KL2CAPInboundMTU, KSolBtL2CAP, inboundMTUSize) != KErrNone) |
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120 { |
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121 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Failed to get inbound MTU size, using L2CAP default value"))); |
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122 inboundMTUSize = KL2CAPDefaultMTUSize; |
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123 } |
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124 |
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125 iRtpSession.OpenL(aSocket, inboundMTUSize); |
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126 iSender = CBTAudioStreamSender::NewL(*this, iRtpSession); |
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127 |
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128 TInt outboundMTUSize; |
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129 if(aSocket.GetOpt(KL2CAPGetOutboundMTU, KSolBtL2CAP, outboundMTUSize) != KErrNone) |
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130 { |
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131 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Failed to get outbound MTU size, using L2CAP default value"))); |
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132 outboundMTUSize = KL2CAPDefaultMTUSize; |
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133 } |
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134 |
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135 iSender->StartL(outboundMTUSize, aFrameLength, aTargetBitrate); |
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136 |
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137 iStarted = ETrue; |
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138 |
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139 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::StartL() <-"))); |
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140 } |
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141 |
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142 // ------------------------------------------------------------------------------------------ |
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143 // This method cleans up the streamer and releases the resources it reserved for streaming. |
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144 // ------------------------------------------------------------------------------------------ |
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145 // |
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146 EXPORT_C void CBTAudioStreamer::Stop() |
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147 { |
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148 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::Stop() ->"))); |
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149 |
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150 if(iStarted != EFalse) // Don't delete things unless we have started, thus created those. |
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151 { |
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152 if(iSender) |
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153 { |
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154 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Stopping and deleting the stream sender."))); |
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155 iSender->Stop(); |
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156 delete iSender; |
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157 iSender = NULL; |
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158 } |
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159 else |
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160 { |
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161 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Error! Stream sender was deleted while the streamer was running!"))); |
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162 } |
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163 |
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164 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t Closing RTP session."))); |
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165 iRtpSession.Close(); |
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166 } |
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167 |
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168 iAudioInput = NULL; |
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169 iStarted = EFalse; |
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170 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::Stop() <-"))); |
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171 } |
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172 |
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173 TInt CBTAudioStreamer::Receive(const TDesC8& /*aBuffer*/) |
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174 { |
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175 return KErrNotSupported; |
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176 } |
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177 |
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178 TInt CBTAudioStreamer::Receive(const TDesC8& aBuffer, TTimeIntervalMicroSeconds aTimestamp) |
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179 { |
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180 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::Receive() ->"))); |
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181 TInt retval = iSender->SendThisBuffer(aBuffer, aTimestamp); |
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182 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::Receive() <-"))); |
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183 return retval; |
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184 } |
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185 |
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186 void CBTAudioStreamer::NotifyBufferSent( const TDesC8 &aBuffer ) |
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187 { |
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188 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NotifyBufferSent() ->"))); |
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189 if(iAudioInput) iAudioInput->BufferEmptied(aBuffer); |
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190 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NotifyBufferSent() <-"))); |
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191 } |
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192 |
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193 void CBTAudioStreamer::NotifyErrorSending( const TDesC8 &/*aBuffer*/ ) |
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194 { |
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195 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NotifyErrorSending() ->"))); |
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196 BT_AUDIO_STREAMER_TRACE_OPT( KPRINTFTRACE, FLOG(_L("[BTAudioStreamer]\t CBTAudioStreamer::NotifyErrorSending() <-"))); |
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197 } |