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:

    15 *

    16 */

    17 

    18 #include <e32def.h> // FIX FOR MAKE_TINT64 warning

    19 #include <e32std.h>

    20 #include "javax_microedition_lcdui_Buffer.h"

    21 #include "CMIDBuffer.h"

    22 #include "CMIDToolkit.h"

    23 

    24 JNIEXPORT jint JNICALL

    25 Java_javax_microedition_lcdui_Buffer__1open(JNIEnv* aJni, jobject aBuffer, jint aEventServerHandle)

    26 {

    27     return CMIDBuffer::New(*aJni, aBuffer, aEventServerHandle);

    28 }

    29 

    30 JNIEXPORT void JNICALL

    31 Java_javax_microedition_lcdui_Buffer__1close

    32 (

    33     JNIEnv* aJni,

    34     jobject /*aBuffer*/,

    35     jint    aHandle

    36 )

    37 {

    38     JavaUnhand<CMIDBuffer>(aHandle)->Dispose(*aJni);

    39 }

    40 

    41 JNIEXPORT void JNICALL

    42 Java_javax_microedition_lcdui_Buffer__1flush

    43 (

    44     JNIEnv*     aJni,

    45     jobject     /* aObj */,

    46     jint        aBuffer,

    47     jintArray   aArray,

    48     jint        aCount

    49 )

    50 {

    51     ASSERT(aBuffer);

    52     ASSERT(aArray);

    53     ASSERT(aCount > 0);

    54 

    55     //

    56     // Flusher condition variable ensures that we cannot get here

    57     // whilst the server is processing the buffer. Hence it is safe to

    58     // access the buffer directly. If we wished to support a cicular

    59     // buffer, this could be done with a lightweight mutex.

    60     //

    61     CMIDBuffer& buffer = * JavaUnhand<CMIDBuffer>(aBuffer);

    62 

    63     buffer.RequestProcess(*aJni, aArray, aCount);

    64 }

    65 

    66 #ifdef GRAPHICS_BUFFER_DRAWPIXELS

    67 JNIEXPORT jint JNICALL

    68 Java_javax_microedition_lcdui_Buffer__1alloc

    69 (

    70     JNIEnv*     aJni,

    71     jobject     /* aObj */,

    72     jintArray   aArray,

    73     jint        aOffset,

    74     jint        aLength

    75 )

    76 {

    77     jint* address = (jint*)User::Alloc(aLength*sizeof(jint));

    78     if (!address)

    79     {

    80         return KErrNoMemory;

    81     }

    82     aJni->GetIntArrayRegion(aArray, aOffset, aLength, address);

    83     return JavaMakeHandle(address);

    84 }

    85 

    86 JNIEXPORT void JNICALL

    87 Java_javax_microedition_lcdui_Buffer__1free

    88 (

    89     JNIEnv*     /*aJni*/,

    90     jobject     /* aObj */,

    91     jint        aAddress

    92 )

    93 {

    94     User::Free(JavaUnhand<jint*>(aAddress));

    95 }

    96 #endif