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 CMMAMetaDataControl

    15 *

    16 */

    17 

    18 

    19 #include <jdebug.h>

    20 #include "com_nokia_microedition_media_control_MetaDataControl.h"

    21 

    22 #include "cmmaeventsource.h"

    23 #include "cmmametadatacontrol.h"

    24 

    25 

    26 /* ...getKeyCount

    27  *

    28  * Returns the number of metadata keys or symbian error code

    29  */

    30 

    31 JNIEXPORT jint JNICALL Java_com_nokia_microedition_media_control_MetaDataControl__1getKeysCount

    32 (JNIEnv* /*aJniEnv*/, jobject, jint aEventSourceHandle, jint aMetaDataControlHandle)

    33 {

    34     CMMAEventSource* eventSource =

    35         JavaUnhand< CMMAEventSource >(aEventSourceHandle);

    36 

    37     CMMAMetaDataControl* metaDataControl =

    38         JavaUnhand< CMMAMetaDataControl >(aMetaDataControlHandle);

    39 

    40     TInt keys;

    41     TInt err = eventSource->ExecuteTrap(&CMMAMetaDataControl::StaticKeysCountL, metaDataControl, &keys);

    42 

    43     return err == KErrNone ? keys : err;

    44 }

    45 

    46 

    47 /* ... getKey

    48  *

    49  * Get the key name at the given index from the actual native implementation. If no key is available,

    50  * return null.

    51  *

    52  * The ownership of the native data is received from the actual native implementation.

    53  * The data is duplicated to the Java side and the native data is destroyed here.

    54  */

    55 

    56 JNIEXPORT jstring JNICALL Java_com_nokia_microedition_media_control_MetaDataControl__1getKey

    57 (JNIEnv* aJniEnv, jobject, jint aEventSourceHandle, jint aMetaDataControlHandle, jint aIndex)

    58 {

    59     CMMAEventSource* eventSource =

    60         JavaUnhand< CMMAEventSource >(aEventSourceHandle);

    61 

    62     CMMAMetaDataControl* metaDataControl =

    63         JavaUnhand< CMMAMetaDataControl >(aMetaDataControlHandle);

    64 

    65     HBufC* key = NULL;

    66     jstring javaStr = NULL;

    67 

    68     TInt err = eventSource->ExecuteTrap(&CMMAMetaDataControl::StaticKeyL, metaDataControl, &key, aIndex);

    69 

    70     if (err == KErrNone)

    71     {

    72         javaStr = CreateJavaString(*aJniEnv, key->Des());

    73     }

    74     delete key;

    75 

    76     return javaStr;

    77 }

    78 

    79 /* ...getKeyValue

    80  *

    81  * Get the value of the given key from the actual native implementation. If no key is available,

    82  * return null (as specified in the MetaDataControl interface).

    83  *

    84  * The ownership of the native data is received from the actual native implementation.

    85  * The data is duplicated to the Java side and the native data is destroyed here.

    86  */

    87 

    88 JNIEXPORT jstring JNICALL Java_com_nokia_microedition_media_control_MetaDataControl__1getKeyValue

    89 (JNIEnv* aJniEnv, jobject, jint aEventSourceHandle, jint aMetaDataControlHandle, jstring aKey)

    90 {

    91     CMMAEventSource* eventSource =

    92         JavaUnhand< CMMAEventSource >(aEventSourceHandle);

    93 

    94     CMMAMetaDataControl* metaDataControl =

    95         JavaUnhand< CMMAMetaDataControl >(aMetaDataControlHandle);

    96 

    97     HBufC* value = NULL;

    98     RJString key(*aJniEnv, aKey);

    99 

   100     TInt retVal = eventSource->ExecuteTrap(

   101                       &CMMAMetaDataControl::StaticKeyValueL,

   102                       metaDataControl,

   103                       &value,

   104                       (TDesC*) &key);

   105 

   106     jstring retString = NULL;

   107 

   108     if (KErrNone == retVal)

   109     {

   110         retString = CreateJavaString(*aJniEnv, *value);

   111     }

   112 

   113     delete value;

   114 

   115     return retString;

   116 }

   117 

   118 //  END OF FILE