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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 |
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20 |
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21 #ifndef MCECNCODEC_H |
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22 #define MCECNCODEC_H |
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23 |
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24 // INCLUDES |
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25 #include <mceaudiocodec.h> |
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26 #include <mcedefs.h> |
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27 |
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28 // CONSTANTS |
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29 |
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30 // CN Default Payload Types |
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31 const TUint8 KMceDefaultCnPayloadType = 13; |
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32 const TUint8 KMceDefaultCnPayloadType2 = 19; |
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33 |
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34 // Default Sampling Rate |
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35 const TUint KMceCnSamplingFreq = 8000; |
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36 |
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37 // PTime and MaxPTime |
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38 const TUint KMceCnDefaultPtime = 20; |
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39 const TUint KMceCnDefaultMaxPtime = 200; |
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40 |
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41 |
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42 // CLASS DECLARATION |
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43 |
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44 /** |
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45 * Class for the Comfort Noise codec information. |
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46 * |
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47 * It checks the validity of inserted values for CN. |
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48 * |
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49 * @l |
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50 mceclient.lib |
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51 */ |
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52 class CMceCnCodec : public CMceAudioCodec |
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53 { |
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54 public: // Constructors and destructor |
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55 |
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56 /** |
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57 * Destructor. |
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58 */ |
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59 IMPORT_C ~CMceCnCodec(); |
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60 |
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61 public: // From base class |
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62 |
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63 /** |
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64 * Enable / Disable Voice Activity Detection. |
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65 * @param aEnableVAD, Boolean indicating whether to enable Voice Activity Detection |
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66 * @return KErrNotSupported if codec doesn't support VAD; otherwise KErrNone. |
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67 */ |
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68 IMPORT_C TInt EnableVAD(TBool aEnableVAD); |
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69 |
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70 /** |
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71 * Sets bitrate used with codec for encoding. |
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72 * @param aBitrate, bitrate value for encoding |
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73 * @return KErrNotSupported if codec doesn't support bitrate value issued; otherwise KErrNone. |
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74 */ |
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75 IMPORT_C TInt SetBitrate(TUint aBitrate); |
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76 |
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77 /** |
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78 * Sets bitrates allowed with codec. |
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79 * @param aBitrates, allowed bitrate values |
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80 * @return KErrNotSupported if codec doesn't support bitrate value issued; otherwise KErrNone. |
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81 */ |
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82 IMPORT_C TInt SetAllowedBitrates(TUint aBitrates); |
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83 |
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84 /** |
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85 * Sets the sampling frequency. |
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86 * @param aSamplingFreq, Sampling frequency to be used |
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87 * @return KErrNotSupported if codec doesn't support sampling frequency issued; otherwise KErrNone. |
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88 */ |
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89 IMPORT_C TInt SetSamplingFreq(TUint aSamplingFreq); |
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90 |
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91 /** |
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92 * Sets the packetization rate. |
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93 * @param aPTime, Packetization rate, must be multiple of audio frame size. |
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94 * @return KErrNotSupported if codec doesn't support packetrate value issued; otherwise KErrNone. |
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95 */ |
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96 IMPORT_C TInt SetPTime(TUint aPTime); |
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97 |
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98 /** |
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99 * Sets the maximum packetization rate. |
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100 * @param aMaxPTime, maximum allowed packetization rate, must be multiple of audio frame size. |
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101 * @return KErrNotSupported if codec doesn't support packetrate value issued; otherwise KErrNone. |
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102 */ |
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103 IMPORT_C TInt SetMaxPTime(TUint aMaxPTime); |
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104 |
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105 /** |
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106 * Sets the payload type identifier. |
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107 * @param aPayloadType payload type identifier. |
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108 * @return One of the standard system-wide error codes. |
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109 */ |
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110 IMPORT_C TInt SetPayloadType(TUint8 aPayloadType); |
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111 |
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112 /** |
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113 * Sets the codec mode. |
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114 * @param aCodecMode Codec mode |
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115 * @return KErrNotSupported if codec doesnt' support codec mode value issued; otherwise KErrNone. |
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116 */ |
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117 IMPORT_C TInt SetCodecMode(TUint aCodecMode); |
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118 |
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119 /** |
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120 * Clones codec, ownership is transferred. |
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121 * @return cloned codec |
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122 */ |
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123 IMPORT_C CMceAudioCodec* CloneL() const; |
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124 |
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125 public: |
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126 |
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127 /** |
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128 * Two-phased constructor. |
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129 * @param aSdpName sdp name |
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130 */ |
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131 static CMceCnCodec* NewL( TBuf8<KMceMaxSdpNameLength> aSdpName); |
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132 |
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133 /** |
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134 * Two-phased constructor. |
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135 * @param aSdpName sdp name |
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136 */ |
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137 static CMceCnCodec* NewLC(TBuf8<KMceMaxSdpNameLength> aSdpName); |
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138 |
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139 |
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140 private: |
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141 |
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142 /** |
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143 * C++ default constructor. |
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144 */ |
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145 CMceCnCodec(); |
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146 |
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147 /** |
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148 * By default Symbian 2nd phase constructor is private. |
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149 */ |
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150 void ConstructL( TBuf8<KMceMaxSdpNameLength> aSdpName); |
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151 |
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152 /** |
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153 * Sets the sdp name. |
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154 * @param aSdpName the sdp name |
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155 */ |
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156 void SetSdpNameL( const TDesC8& aSdpName ); |
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157 |
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158 //for testing |
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159 |
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160 MCE_UNIT_TEST_DEFS |
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161 }; |
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162 |
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163 |
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164 #endif |
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165 |
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166 // End of File |
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167 |