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1 /* |
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2 * Copyright (c) 2008 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: Mcc Internal definitions |
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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 #ifndef INTERNALDEF_H |
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21 #define INTERNALDEF_H |
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22 |
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23 |
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24 // CONSTANTS |
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25 // When the remote end sends us SID/CN frames, then we can update the SID/CN |
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26 // parameters programmatically. Otherwise, we should not try to "emulate" |
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27 // SID/CN frames as this can lead to degradation of audio quality. Instead, |
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28 // we will send NULL/NO_DATA into the decoder. |
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29 |
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30 // AMR-NB SID FT value is 8 and is located in the upper 4 bits |
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31 // See 3GPP TS 26.101 |
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32 const TUint8 KAmrSidMode = 8; |
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33 |
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34 // AMR-NB mode mask |
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35 const TUint8 KAmrModeMask = 0x78; |
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36 |
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37 // AMR-NB SID Update frame interval |
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38 const TInt KAmrNbSidUpdateInterval = 8; |
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39 |
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40 // Minimum required data length for DTX decision |
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41 const TInt KMinDataLenForDtx = 1; |
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42 |
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43 // AMR NO_DATA frame needs one byte |
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44 // See 3GPP TS 26.101 and RFC 2367 |
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45 // ________________ |
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46 // |0|1|1|1|1|1|0|0| |
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47 // |P| FT |Q|P|P| |
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48 // |
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49 // P = PADDING |
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50 // FT = 15 = NO_DATA |
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51 // Q = QUALITY |
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52 const TUint8 KAmrNoDataFrame = 0x7C; |
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53 |
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54 // Length of the header and AMR NO_DATA frames |
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55 const TInt KNoDataLength = 1; |
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56 |
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57 // AMR mode solving needs 3 bit shift |
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58 const TInt KModeShiftBits = 3; |
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59 |
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60 // VoIP codec header bytes can be either audio, comfort noise or unvoiced |
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61 // non-sid (null/no data) frame. Unvoiced non-sid frame is detected when |
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62 // the header byte does not indicate audio or comfort noise. |
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63 //const TUint8 KVoIPAudioFrame = 1; |
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64 const TUint8 KVoIPCNFrame = 2; |
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65 |
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66 |
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67 const TUint KJBAdaptUpdateIval = 250; |
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68 const TUint KJBMillisecondsToMicroseconds = 1000; |
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69 const TUint KJBEmptyBufferDelay = 2; |
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70 |
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71 const TInt KDefaultSampleRateInkHz = 8; |
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72 const TInt KLowBufferLimit = 2; |
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73 const TInt KOverflowAlarmLimit = 20; |
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74 |
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75 // Codec frame sizes |
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76 const TInt KAMRNBFrameSize = 32; |
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77 const TInt KILBCFrameSize = 52; |
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78 const TInt KG729FrameSize = 24; // 10 octets + 2 for header |
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79 |
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80 // Max possible sequence number of RTP packet with standard RTP header. |
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81 const TUint KMaxSeqNumber = 0xFFFF; // 16-bit value |
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82 |
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83 // Codec frame times |
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84 const TInt KAMRNBFrameTime = 20; |
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85 |
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86 // VoIP codecs have a two byte header |
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87 const TInt KVoIPHeaderLength = 2; |
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88 |
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89 #endif //INTERNALDEF_H |
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90 |
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91 |
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92 // End of file |