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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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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 the "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 * Ixonos Plc |
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14 * |
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15 * Description: |
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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 __CPROCAWBINFILEHANDLER_H__ |
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21 #define __CPROCAWBINFILEHANDLER_H__ |
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22 |
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23 #include <e32base.h> |
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24 #include <f32file.h> |
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25 #include "AudCommon.h" |
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26 #include "ProcConstants.h" |
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27 #include "ProcInFileHandler.h" |
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28 |
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29 |
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30 class CProcAWBInFileHandler: public CProcInFileHandler |
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31 { |
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32 |
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33 public: |
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34 |
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35 static CProcAWBInFileHandler* NewL(const TDesC& aFileName, |
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36 RFile* aFileHandle, |
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37 CAudClip* aClip, TInt aReadBufferSize, |
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38 TInt aTargetSampleRate = 0, |
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39 TChannelMode aChannelMode = EAudSingleChannel); |
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40 |
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41 static CProcAWBInFileHandler* NewLC(const TDesC& aFileName, |
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42 RFile* aFileHandle, |
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43 CAudClip* aClip, TInt aReadBufferSize, |
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44 TInt aTargetSampleRate = 0, |
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45 TChannelMode aChannelMode = EAudSingleChannel); |
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46 |
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47 |
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48 // From base class |
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49 |
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50 void GetPropertiesL(TAudFileProperties* aProperties); |
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51 |
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52 /** |
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53 * Seeks a certain audio frame for reading |
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54 * |
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55 * Possible leave codes: |
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56 * |
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57 * @param aFrameIndex frame index |
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58 * @param aTime time from the beginning of file in milliseconds |
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59 * |
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60 * @return ETrue if successful |
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61 * EFalse if beyond the file |
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62 */ |
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63 TBool SeekAudioFrame(TInt32 aTime); |
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64 |
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65 |
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66 /** |
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67 * Seeks a cut in audio frame for reading |
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68 * |
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69 * Possible leave codes: |
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70 * |
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71 * |
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72 * @return ETrue if successful |
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73 * |
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74 */ |
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75 TBool SeekCutInFrame(); |
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76 |
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77 virtual TBool SetNormalizingGainL(const CProcFrameHandler* aFrameHandler); |
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78 |
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79 virtual ~CProcAWBInFileHandler(); |
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80 |
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81 |
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82 |
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83 |
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84 private: |
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85 |
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86 void ConstructL(const TDesC& aFileName, RFile* aFileHandle, CAudClip* aClip, |
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87 TInt aReadBufferSize, TInt aTargetSampleRate = 0, |
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88 TChannelMode aChannelMode = EAudSingleChannel); |
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89 |
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90 TBool GetEncAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime); |
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91 |
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92 // durations in milliseconds |
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93 virtual TBool GetFrameInfo(TInt& aSongDuration, |
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94 TInt& aFrameAmount, |
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95 TInt& aAverageFrameDuration, |
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96 TInt& aAverageFrameSize); |
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97 |
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98 |
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99 |
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100 protected: |
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101 |
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102 CProcAWBInFileHandler(); |
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103 |
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104 }; |
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105 |
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106 #endif |