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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** @file |
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17 @internalTechnology */ |
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18 #include <e32base.h> |
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19 #include "InputStream.h" |
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20 |
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21 #include "ChunkProcessor.h" |
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22 |
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23 CChunkProcessor::CChunkProcessor(CMngPlayer& aMngPlayer): |
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24 CActive(EPriorityIdle), |
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25 iMngPlayer(aMngPlayer) |
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26 { |
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27 CActiveScheduler::Add(this); |
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28 } |
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29 |
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30 void CChunkProcessor::DoCancel() |
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31 { |
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32 if (iCallerRequest != NULL) |
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33 { |
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34 User::RequestComplete(iCallerRequest, KErrCancel); |
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35 } |
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36 |
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37 if (iStatus.Int() == KRequestPending) |
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38 { |
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39 TRequestStatus* pReq=&iStatus; |
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40 User::RequestComplete(pReq, KErrCancel); |
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41 } |
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42 } |
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43 |
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44 TInt CChunkProcessor::RunError(TInt aError) |
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45 { |
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46 NotifyCaller(aError); |
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47 return KErrNone; |
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48 } |
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49 |
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50 void CChunkProcessor::RunAgain() |
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51 { |
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52 if (iIsPaused) |
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53 { |
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54 ASSERT(EFalse==iNeedRunAfterResume); |
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55 iNeedRunAfterResume = ETrue; |
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56 } |
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57 else |
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58 { |
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59 iNeedRunAfterResume = EFalse; |
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60 SetActive(); |
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61 TRequestStatus* pReq=&iStatus; |
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62 User::RequestComplete(pReq, KErrNone); |
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63 } |
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64 } |
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65 |
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66 void CChunkProcessor::Pause() |
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67 { |
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68 iIsPaused = ETrue; |
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69 if (iSubProcessor) |
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70 { |
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71 iSubProcessor->Pause(); |
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72 } |
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73 } |
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74 |
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75 void CChunkProcessor::Resume() |
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76 { |
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77 iIsPaused=EFalse; |
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78 if (iSubProcessor) |
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79 { |
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80 iSubProcessor->Resume(); |
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81 } |
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82 |
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83 if (iNeedRunAfterResume) |
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84 { |
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85 RunAgain(); |
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86 } |
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87 } |
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88 |
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89 void CChunkProcessor::Stop() |
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90 { |
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91 if (iInputStream != NULL) |
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92 { |
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93 iInputStream->Release(); |
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94 } |
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95 iInputStream = NULL; |
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96 if (iSubProcessor != NULL) |
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97 { |
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98 iSubProcessor->Stop(); |
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99 } |
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100 Cancel(); |
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101 iNeedRunAfterResume = EFalse; |
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102 } |
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103 |
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104 void CChunkProcessor::NotifyCaller(TInt aErrCode) |
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105 { |
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106 User::RequestComplete(iCallerRequest, aErrCode); |
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107 if (iInputStream != NULL) |
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108 { |
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109 iInputStream->Release(); |
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110 } |
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111 iInputStream = NULL; |
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112 } |
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113 |
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114 void CChunkProcessor::RunL() |
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115 { |
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116 if (iStatus != KErrNone) |
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117 { |
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118 User::Leave(iStatus.Int()); |
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119 } |
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120 if (iIsPaused) |
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121 { |
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122 ASSERT(EFalse==iNeedRunAfterResume); |
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123 iNeedRunAfterResume = ETrue; |
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124 } |
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125 else |
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126 { |
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127 DoRunL(); |
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128 } |
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129 } |