1 /*

     2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "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 *

    14 * Description:

    15 *

    16 */

    17 

    18 #include "sound_util.h"

    19 

    20 // Translation table for RMdaDevSound::TMdaSoundEncoding set

    21 

    22 _LIT(KStrEMdaSoundEncoding8BitPCM,			"EMdaSoundEncoding8BitPCM");

    23 _LIT(KStrEMdaSoundEncoding16BitPCM,			"EMdaSoundEncoding16BitPCM");

    24 _LIT(KStrEMdaSoundEncoding8BitALaw,			"EMdaSoundEncoding8BitALaw");

    25 _LIT(KStrEMdaSoundEncoding8BitMuLaw,		"EMdaSoundEncoding8BitMuLaw");

    26 

    27 // NB! Wrong member for negative testing

    28 _LIT(KStrEMdaSoundEncoding40BitPCM,			"EMdaSoundEncoding40BitPCM");

    29 _LIT(KStrNull,								"");

    30 

    31 const CDataWrapperBase::TEnumEntryTable		TSoundUtil::iEnumTableSoundEncoding[] =

    32 	{

    33 //	Enum as a descriptor					Enum

    34 	KStrEMdaSoundEncoding8BitPCM,			RMdaDevSound::EMdaSoundEncoding8BitPCM,

    35 	KStrEMdaSoundEncoding16BitPCM,			RMdaDevSound::EMdaSoundEncoding16BitPCM,

    36 	KStrEMdaSoundEncoding8BitALaw,			RMdaDevSound::EMdaSoundEncoding8BitALaw,

    37 	KStrEMdaSoundEncoding8BitMuLaw,			RMdaDevSound::EMdaSoundEncoding8BitMuLaw,

    38 	KStrEMdaSoundEncoding40BitPCM,			0x00000040,

    39 	KStrNull,								-1

    40 	};

    41 

    42 /**

    43  * Loading of generinc sound driver required for RMDaDevSound interface

    44  * 

    45  * @param aLll 				LDD driver name

    46  * @param aPdd				PDD driver name

    47  *

    48  * @return					System wide error

    49  *

    50  * @leave					no

    51  */

    52 TInt	TSoundUtil::LoadSoundDrivers(const TDesC& aLdd, const TDesC& aPdd)

    53 	{

    54 	TInt rerr = KErrNone;

    55 	

    56 	rerr = User::LoadPhysicalDevice(aPdd);

    57 	if(rerr != KErrNone && rerr != KErrAlreadyExists)

    58 		{

    59 		return rerr;

    60 		}

    61 	rerr = User::LoadLogicalDevice(aLdd);	

    62 	if(rerr != KErrNone && rerr != KErrAlreadyExists)

    63 		{

    64 		return rerr;

    65 		}

    66 	return KErrNone;	

    67 	}

    68 

    69 /**

    70  * Un-loading of generinc sound driver required for RMDaDevSound interface

    71  * 

    72  * @param aLll 				LDD driver name

    73  * @param aPdd				PDD driver name

    74  *

    75  * @return					System wide error

    76  *

    77  * @leave					no

    78  */

    79 TInt	TSoundUtil::FreeSoundDrivers(const TDesC& aLdd, const TDesC& aPdd)

    80 	{

    81 	TInt rerr = KErrNone;

    82 	

    83 	rerr = User::FreePhysicalDevice(aPdd);

    84 	if(rerr != KErrNone && rerr != KErrAlreadyExists)

    85 		{

    86 		return rerr;

    87 		}

    88 	rerr = User::FreeLogicalDevice(aLdd);	

    89 	if(rerr != KErrNone && rerr != KErrAlreadyExists)

    90 		{

    91 		return rerr;

    92 		}

    93 	return KErrNone;	

    94 	}

    95 

    96 /**

    97  * Store current RBuf8 content into the binary file

    98  * 

    99  * @param aFile 			file name to save audio data

   100  *

   101  * @return					System wide error

   102  *

   103  * @leave					System wide error

   104  */

   105 TInt	TSoundUtil::RAudioBuffer::SaveAudioDataL(const TDesC& aFile)

   106 	{	

   107 	RFs fsSession;

   108 	::CleanupClosePushL(fsSession);

   109 	User::LeaveIfError(fsSession.Connect()); 	

   110 	TInt err = KErrNone;

   111 	RFile file;

   112 	err = file.Create(fsSession, aFile, EFileStream | EFileWrite);

   113 	if (!err)

   114 		{

   115 		err = file.Write(*this);

   116 

   117 		file.Close();

   118 		}	

   119 	fsSession.Close();

   120 	CleanupStack::PopAndDestroy();		

   121 	return err;

   122 	}

   123 

   124 /**

   125  * Load binary file content into RBuf8

   126  * 

   127  * @param aFile 			file name where to load audio data

   128  *

   129  * @return					System wide error

   130  *

   131  * @leave					System wide error

   132  */

   133 TInt	TSoundUtil::RAudioBuffer::LoadAudioDataL(const TDesC& aFile)

   134 	{

   135 	RFs fsSession;

   136 	::CleanupClosePushL(fsSession);

   137 	User::LeaveIfError(fsSession.Connect());	

   138 	TFindFile	findFile(fsSession);

   139 	TInt err = findFile.FindByDir(aFile, KStrNull);

   140 	if ( err == KErrNone )

   141 		{

   142 		const TDesC&	fileName=findFile.File();

   143 		RFile file;

   144 		err = file.Open(fsSession, fileName, EFileStream | EFileRead);

   145 		if (!err)

   146 			{

   147 			err = file.Read(*this);

   148 			file.Close();

   149 			}

   150 		}

   151 	fsSession.Close();

   152 	CleanupStack::PopAndDestroy();		

   153 	return err;	

   154 	}

   155 

   156 /**

   157  * Delete file

   158  * 

   159  * @param aFile 			file name to delete

   160  *

   161  * @return					System wide error

   162  *

   163  * @leave					System wide error

   164  */

   165 TInt	TSoundUtil::DeleteFileL(const TDesC& aFile)

   166 	{

   167 	RFs fsSession;

   168 	CleanupClosePushL(fsSession);

   169 	User::LeaveIfError(fsSession.Connect());

   170 	TInt err;

   171 	err = fsSession.Delete(aFile);	

   172 	fsSession.Close();

   173 	CleanupStack::PopAndDestroy();

   174 	return err;

   175 	}