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 *

    17 */

    18 

    19 

    20 #ifndef __CPROCAMRINFILEHANDLER_H__

    21 #define __CPROCAMRINFILEHANDLER_H__

    22 

    23 #include <e32base.h>

    24 #include <f32file.h>

    25 #include "AudCommon.h"

    26 #include "ProcConstants.h"

    27 #include "ProcInFileHandler.h"

    28 #include "AudClip.h"

    29 

    30 #include "ProcDecoder.h"

    31 

    32 

    33 class CProcAMRInFileHandler: public CProcInFileHandler 

    34     {

    35 

    36 public:

    37 

    38     static CProcAMRInFileHandler* NewL(const TDesC& aFileName,  

    39                                        RFile* aFileHandle,

    40                                        CAudClip* aClip, TInt aReadBufferSize,

    41                                        TInt aTargetSampleRate = 0, 

    42                                        TChannelMode aChannelMode = EAudSingleChannel);

    43                                        

    44     static CProcAMRInFileHandler* NewLC(const TDesC& aFileName, 

    45                                         RFile* aFileHandle,

    46                                         CAudClip* aClip, TInt aReadBufferSize,

    47                                         TInt aTargetSampleRate = 0, 

    48                                         TChannelMode aChannelMode = EAudSingleChannel);

    49 

    50 

    51     // From base class

    52 

    53     void GetPropertiesL(TAudFileProperties* aProperties);

    54     

    55     /**

    56     * Seeks a certain audio frame for reading

    57     *

    58     * Possible leave codes:  

    59     *    

    60     * @param aFrameIndex    frame index

    61     * @param aTime            time from the beginning of file in milliseconds

    62     *

    63     * @return    ETrue if successful

    64     *            EFalse if beyond the file

    65     */

    66     TBool SeekAudioFrame(TInt32 aTime);

    67 

    68     

    69     /**

    70     * Seeks a cut in audio frame for reading

    71     *

    72     * Possible leave codes:  

    73     *    

    74     *

    75     * @return    ETrue if successful

    76     *                

    77     */

    78     TBool SeekCutInFrame();

    79     

    80     virtual TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler);

    81 

    82     virtual ~CProcAMRInFileHandler();

    83 

    84 

    85     

    86 

    87 private:

    88     

    89     void ConstructL(const TDesC& aFileName, RFile* aFileHandle, CAudClip* aClip, 

    90                     TInt aReadBufferSize, TInt aTargetSampleRate = 0, 

    91                     TChannelMode aChannelMode = EAudSingleChannel);

    92 

    93     virtual TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime);

    94     

    95 

    96 

    97     // durations in milliseconds

    98     virtual TBool GetFrameInfo(TInt& aSongDuration,

    99                                 TInt& aFrameAmount, 

   100                                 TInt& aAverageFrameDuration, 

   101                                 TInt& aAverageFrameSize);

   102 

   103     TInt iLastDRCL;

   104 

   105     

   106 protected:

   107     

   108     CProcAMRInFileHandler();

   109     

   110     };

   111 

   112 #endif