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1 // Copyright (c) 2006-2009 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 /** |
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17 @file |
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18 @internalComponent |
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19 */ |
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20 |
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21 #include <bluetooth/btpowercontrol.h> |
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22 #include <bluetooth/hciserverclient.h> |
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23 #include <bluetooth/hci/hciipc.h> |
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24 #include <bluetooth/logger.h> |
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25 #include <bluetooth/btpowercontrolmessages.h> |
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26 |
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27 #ifdef __FLOG_ACTIVE |
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28 _LIT8(KLogComponent, LOG_COMPONENT_BTPOWERCONTROL); |
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29 #endif |
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30 |
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31 |
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32 EXPORT_C RBTPowerControl::RBTPowerControl() |
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33 : iHCIServerSession(NULL) |
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34 { |
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35 } |
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36 |
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37 /** |
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38 Opens the handle to the power control interface for the Bluetooth hardware. |
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39 |
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40 @panic KBTPowerControlPanic EHandleIsAlreadyOpen If the RBTPowerControl instance has already been opened (and not subsequently closed). |
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41 */ |
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42 EXPORT_C TInt RBTPowerControl::Open() |
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43 { |
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44 __ASSERT_ALWAYS(!iHCIServerSession, PANIC(KBTPowerControlPanic, EHandleIsAlreadyOpen)); |
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45 TInt err = KErrNoMemory; |
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46 iHCIServerSession = new RHCIServerSession; |
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47 if(iHCIServerSession) |
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48 { |
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49 err = iHCIServerSession->Open(KHCIPowerControlManagerUid); |
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50 if(err != KErrNone) |
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51 { |
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52 delete iHCIServerSession; |
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53 iHCIServerSession = NULL; |
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54 } |
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55 } |
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56 return err; |
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57 } |
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58 |
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59 /** |
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60 Closes the handle to the Bluetooth power control interface. |
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61 |
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62 Note that it is safe to call this multiple times. |
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63 */ |
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64 EXPORT_C void RBTPowerControl::Close() |
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65 { |
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66 if(iHCIServerSession) |
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67 { |
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68 iHCIServerSession->Close(); |
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69 delete iHCIServerSession; |
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70 iHCIServerSession = NULL; |
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71 } |
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72 } |
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73 |
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74 /** |
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75 Makes an asynchronous request to set the power state of the Bluetooth hardware. |
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76 |
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77 @param aState The desired state. |
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78 @param aInfo |
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79 @param aStatus The TRequestStatus that will signal the result of the request when completed. |
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80 |
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81 @panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened. |
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82 */ |
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83 EXPORT_C void RBTPowerControl::SetPower(TBTPowerState aState, TDes8* aInfo, TRequestStatus &aStatus) |
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84 { |
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85 __ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen)); |
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86 TInt state = static_cast<TInt>(aState); |
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87 iHCIServerSession->SendAsync(EHCISetPower, aInfo, NULL, state, aStatus); |
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88 } |
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89 |
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90 /** |
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91 Makes a synchronous request to get the current power state of the Bluetooth hardware. |
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92 |
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93 @param aState Set (on return) to the current power state if request was successful. |
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94 @param aInfo |
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95 @return KErrNone if the request was successful, otherwise one of the system-wide error codes. |
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96 |
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97 @panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened. |
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98 */ |
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99 EXPORT_C TInt RBTPowerControl::GetPower(TBTPowerState& aState, TDes8* aInfo) |
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100 { |
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101 __ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen)); |
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102 TPckgBuf<TBTPowerState> pckg; |
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103 TInt err = iHCIServerSession->SendSync(EHCIGetPower, aInfo, &pckg, 0); |
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104 if(err==KErrNone) |
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105 { |
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106 aState = pckg(); |
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107 } |
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108 return err; |
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109 } |
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110 |
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111 /** |
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112 Cancels asynchronous requests made through this handle to the power control interface. |
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113 |
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114 @panic KBTPowerControlPanic EApiUsedWhenHandleIsNotOpen If called when the RBTPowerControl instance has not been opened. |
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115 */ |
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116 EXPORT_C void RBTPowerControl::Cancel() |
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117 { |
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118 __ASSERT_ALWAYS(iHCIServerSession, PANIC(KBTPowerControlPanic, EApiUsedWhenHandleIsNotOpen)); |
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119 // Cast away the return value - we can only do our best here, if there is an error (which shouldn't originate |
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120 // from the HCI Server at least) we just ignore it. |
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121 static_cast<void>(iHCIServerSession->SendSync(KHCICancelPower, NULL, NULL, 0)); |
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122 } |