1 /*

     2 * Copyright (c) 2010 Ixonos Plc.

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - Initial contribution

    11 *

    12 * Contributors:

    13 * Ixonos Plc

    14 *

    15 * Description:  

    16 * Common internal constants for audio.

    17 *

    18 */

    19 

    20 

    21 

    22 #ifndef __AUDCONSTANTS_H__

    23 #define __AUDCONSTANTS_H__

    24 

    25 

    26 

    27 // CONSTANTS

    28 

    29 const TInt KAedSampleRate8kHz = 8000;

    30 const TInt KAedSampleRate11kHz = 11025;

    31 const TInt KAedSampleRate16kHz = 16000;

    32 const TInt KAedSampleRate22kHz = 22050;

    33 const TInt KAedSampleRate24kHz = 24000;

    34 const TInt KAedSampleRate32kHz = 32000;

    35 const TInt KAedSampleRate44kHz = 44100;

    36 const TInt KAedSampleRate48kHz = 48000;

    37 

    38 const TInt KAedBitRateAMR = 12200;

    39 const TInt KAedBitRateAAC16kHz = 48000;

    40 const TInt KAedBitRateAAC48kHz = 192000;

    41 

    42 const TInt KAedAACMinBitRateMultiplier = 1; // min bitrate is 1 bit per sample

    43 const TInt KAedAACMaxBitRateMultiplier = 6; // max bitrate is 6 bits per sample

    44 

    45 const TInt KAedAMRFrameDuration = 20000;

    46 

    47 const TInt KAedSizeAACBuffer = 2048;

    48 const TInt KAedSizeAACStereoBuffer = 4096;

    49 const TInt KAedMaxFeedBufferSize = 4096;

    50 const TInt KAedMaxAACFrameLengthPerChannel = 768;

    51 const TInt KAedMaxAMRFrameLength = 32;

    52 const TInt KAedMaxAWBFrameLength = 61;

    53 const TInt KAedMaxMP3FrameLength = 1440;

    54 const TInt KAedSizeAMRBuffer = 320;

    55 const TInt KAedSizeAWBBuffer = 640;

    56 

    57 const TInt KAedMinAMRBitRate = 400;      // voice activity detection creates at least 1 byte per frame => 50 bytes/s = 400 bits/s

    58 const TInt KAedMaxAMRBitRate = 12200;

    59 const TInt KAedNumSupportedAACSampleRates = 2;

    60 const TInt KAedSupportedAACSampleRates[KAedNumSupportedAACSampleRates] = {KAedSampleRate16kHz, KAedSampleRate48kHz};

    61 

    62 // Max resolution for visualization; this should cover > 30 minute clip if 5 samples per sec are requested 

    63 const TInt KAedMaxVisualizationResolution = 10000;

    64 

    65 // UId of the AAC CMMFCodec encoder

    66 const TUid KAedAACEncSWCodecUid = {0x1020382F};    //KAdvancedUidCodecPCM16ToAAC

    67 // UId of the AMR-NB CMMFCodec encoder

    68 const TUid KAedAMRNBEncSWCodecUid = {0x101FAF68};    //KAdvancedUidCodecPCM16ToAMR

    69 

    70 // UId of the AAC CMMFCodec decoder

    71 const TUid KMmfAACDecSWCodecUid = {0x101FAF81};    //KMmfUidCodecAACToPCM16

    72 // UId of the AMR-NB CMMFCodec decoder

    73 const TUid KMmfAMRNBDecSWCodecUid = {0x101FAF67};    //KAdvancedUidCodecAMRToPCM16

    74 // UId of the eAAC+ CMMFCodec decoder

    75 const TUid KMmfUidCodecEnhAACPlusToPCM16 = {0x10207AA9};

    76 // UId of the AMR-WB CMMFCodec decoder

    77 const TUid KMmfAMRWBDecSWCodecUid = {0x101FAF5E};

    78 // UId of the MP3 CMMFCodec decoder

    79 const TUid KMmfAdvancedUidCodecMP3ToPCM16 = {0x101FAF85};

    80 

    81 // FourCC for the eAAC+

    82 const TUint32 KMMFFourCCCodeAACPlus = 0x43414520;		//(' ','E','A','C')

    83 

    84 // Used in CProcInFileHandler::GetGainNow() to reduce positive gains

    85 const TInt KAedPositiveGainDivider = 5;

    86 

    87 

    88 #endif // __AUDCONSTANTS_H__

    89