author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:23:00 +0100 | |
branch | RCL_3 |
changeset 20 | 0ac9a5310753 |
parent 0 | 71ca22bcf22a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Mcc Internal definitions |
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* |
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*/ |
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#ifndef INTERNALDEF_H |
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#define INTERNALDEF_H |
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// CONSTANTS |
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// When the remote end sends us SID/CN frames, then we can update the SID/CN |
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// parameters programmatically. Otherwise, we should not try to "emulate" |
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// SID/CN frames as this can lead to degradation of audio quality. Instead, |
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// we will send NULL/NO_DATA into the decoder. |
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// AMR-NB SID FT value is 8 and is located in the upper 4 bits |
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// See 3GPP TS 26.101 |
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const TUint8 KAmrSidMode = 8; |
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// AMR-NB mode mask |
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const TUint8 KAmrModeMask = 0x78; |
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// AMR-NB SID Update frame interval |
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const TInt KAmrNbSidUpdateInterval = 8; |
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// Minimum required data length for DTX decision |
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const TInt KMinDataLenForDtx = 1; |
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// AMR NO_DATA frame needs one byte |
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// See 3GPP TS 26.101 and RFC 2367 |
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// ________________ |
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// |0|1|1|1|1|1|0|0| |
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// |P| FT |Q|P|P| |
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// |
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// P = PADDING |
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// FT = 15 = NO_DATA |
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// Q = QUALITY |
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const TUint8 KAmrNoDataFrame = 0x7C; |
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// Length of the header and AMR NO_DATA frames |
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const TInt KNoDataLength = 1; |
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// AMR mode solving needs 3 bit shift |
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const TInt KModeShiftBits = 3; |
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// VoIP codec header bytes can be either audio, comfort noise or unvoiced |
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// non-sid (null/no data) frame. Unvoiced non-sid frame is detected when |
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// the header byte does not indicate audio or comfort noise. |
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//const TUint8 KVoIPAudioFrame = 1; |
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const TUint8 KVoIPCNFrame = 2; |
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const TUint KJBAdaptUpdateIval = 250; |
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const TUint KJBMillisecondsToMicroseconds = 1000; |
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const TUint KJBEmptyBufferDelay = 2; |
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const TInt KDefaultSampleRateInkHz = 8; |
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const TInt KLowBufferLimit = 2; |
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const TInt KOverflowAlarmLimit = 20; |
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// Codec frame sizes |
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const TInt KAMRNBFrameSize = 32; |
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const TInt KILBCFrameSize = 52; |
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const TInt KG729FrameSize = 24; // 10 octets + 2 for header |
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// Max possible sequence number of RTP packet with standard RTP header. |
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const TUint KMaxSeqNumber = 0xFFFF; // 16-bit value |
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// Codec frame times |
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const TInt KAMRNBFrameTime = 20; |
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// VoIP codecs have a two byte header |
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const TInt KVoIPHeaderLength = 2; |
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#endif //INTERNALDEF_H |
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// End of file |