1 /*

     2 * Copyright (c) 2002 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:  This class has JNI wrappers for CMMATempoControl

    15 *

    16 */

    17 

    18 //#include <jutils.h>

    19 //#include "mmapiutils.h"

    20 

    21 #include "com_nokia_microedition_media_control_TempoControl.h"

    22 #include "mmafunctionserver.h"

    23 #include "cmmamiditempocontrol.h"

    24 #include <logger.h>

    25 

    26 //

    27 // Wrapper functions which are needed in event source execution.

    28 // If method to be called can leave ExecuteTrap must be used,

    29 // otherwise Execute and ExecuteV can be used.

    30 //

    31 //

    32 

    33 /**

    34  * Local function which can be used to call CMMATempoControl class methods.

    35  * Type of of the function pointer must be

    36  * TInt CMMATempoControl::aFunc( TInt aData )

    37  *

    38  * @param aTempoControl CMMATempoControl pointer.

    39  * @param aFunc Pointer to the CMMATempoControl method.

    40  * @param aData Parameter to passed to the aFunc method

    41  * @param aReturnValue The return value of the aFunc will

    42  *                     be assigned to this parameter.

    43  */

    44 LOCAL_C void ReturnIntParamIntFuncL(CMMAMIDITempoControl* aTempoControl,

    45                                     TInt(CMMAMIDITempoControl::*aFuncL)(TInt),

    46                                     TInt aData,

    47                                     TInt* aReturnValue)

    48 {

    49     // call TInt CMMATempoControl::aFunc( TInt aData ) method.

    50     *aReturnValue = (aTempoControl->*aFuncL)(aData);

    51 }

    52 

    53 /**

    54  * Local function which can be used to call CMMATempoControl class methods.

    55  * Type of of the function pointer must be

    56  * TInt CMMATempoControl::aFunc()

    57  *

    58  * @param aTempoControl CMMATempoControl pointer.

    59  * @param aFunc Pointer to the CMMATempoControl method.

    60  * @param aReturnValue The return value of the aFunc will

    61  *                     be assigned to this parameter.

    62  */

    63 LOCAL_C void ReturnIntFuncL(CMMAMIDITempoControl* aTempoControl,

    64                             TInt(CMMAMIDITempoControl::*aFuncL)(),

    65                             TInt* aReturnValue)

    66 {

    67     // call TInt CMMATempoControl::aFunc() method.

    68     *aReturnValue = (aTempoControl->*aFuncL)();

    69 }

    70 

    71 //

    72 // JNI functions. Prototypes are generated and commented in Java class

    73 // com_nokia_microedition_media_control_TempoControl

    74 //

    75 

    76 /**

    77  * JNI function from com.nokia.microedition.media.control.TempoControl

    78  */

    79 JNIEXPORT jint JNICALL

    80 Java_com_nokia_microedition_media_control_TempoControl__1setTempo

    81 (JNIEnv*,

    82  jobject,

    83  jint aControlHandle,

    84  jint aEventSourceHandle,

    85  jint aTempo)  // parameter boundary is checked in Java side.

    86 {

    87     // Get pointer to native event source.

    88     MMAFunctionServer* eventSource =

    89         reinterpret_cast< MMAFunctionServer* >(aEventSourceHandle);

    90 

    91     CMMAMIDITempoControl* tempoControl =

    92         reinterpret_cast< CMMAMIDITempoControl* >(aControlHandle);

    93 

    94     // Value returned from SetTempo method will be assigned to returnValue.

    95     TInt returnValue = 0;

    96 

    97     // Setting tempo will not leave, it just assigns default

    98     // value to the returnValue variable.

    99     TInt error;

   100     error = eventSource->ExecuteTrap(&ReturnIntParamIntFuncL,

   101                                      tempoControl,

   102                                      &CMMAMIDITempoControl::SetTempoL,

   103                                      aTempo,

   104                                      &returnValue);

   105 

   106     LOG1(EJavaMMAPI, EInfo, "TempoControl__1setTempo return value %d", returnValue);

   107 

   108     return (error == KErrNone) ? returnValue : error;

   109 }

   110 

   111 /**

   112  * JNI function from com.nokia.microedition.media.control.TempoControl

   113  */

   114 JNIEXPORT jint JNICALL

   115 Java_com_nokia_microedition_media_control_TempoControl__1getTempo

   116 (JNIEnv*,

   117  jobject,

   118  jint aControlHandle,

   119  jint aEventSourceHandle)

   120 {

   121     // Get pointer to native event source.

   122     MMAFunctionServer* eventSource =

   123         reinterpret_cast< MMAFunctionServer *>(aEventSourceHandle);

   124 

   125     CMMAMIDITempoControl* tempoControl =

   126         reinterpret_cast< CMMAMIDITempoControl* >(aControlHandle);

   127 

   128     TInt returnValue = 0;

   129     TInt error;

   130 

   131     error = eventSource->ExecuteTrap(&ReturnIntFuncL,

   132                                      tempoControl,

   133                                      &CMMAMIDITempoControl::TempoL,

   134                                      &returnValue);

   135 

   136     LOG1(EJavaMMAPI, EInfo, "TempoControl__1getTempo return value %d", returnValue);

   137 

   138     return (error == KErrNone) ? returnValue : error;

   139 }

   140 //  END OF FILE