/*

 * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <stdlib.h>

#include "SurfaceData.h"

#include "sun_awt_image_DataBufferNative.h"

#include "jni_util.h"

#include "debug_trace.h"

#include <stdio.h>

unsigned char *DBN_GetPixelPointer(JNIEnv *env, jint x, int y,

                                   SurfaceDataRasInfo *lockInfo,

                                   SurfaceDataOps *ops, int lockFlag)

{

    if (ops == NULL) {

        return NULL;

    }

    lockInfo->bounds.x1 = x;

    lockInfo->bounds.y1 = y;

    lockInfo->bounds.x2 = x + 1;

    lockInfo->bounds.y2 = y + 1;

    if (ops->Lock(env, ops, lockInfo, lockFlag) != SD_SUCCESS) {

        return NULL;

    }

    ops->GetRasInfo(env, ops, lockInfo);

    if (lockInfo->rasBase) {

        unsigned char *pixelPtr = (

            (unsigned char*)lockInfo->rasBase +

            (x * lockInfo->pixelStride + y * lockInfo->scanStride));

        return pixelPtr;

    }

    SurfaceData_InvokeRelease(env, ops, lockInfo);

    SurfaceData_InvokeUnlock(env, ops, lockInfo);

    return NULL;

}

/*

 * Class:     sun_awt_image_DataBufferNative

 * Method:    getElem

 * Signature:

 */

JNIEXPORT jint JNICALL

Java_sun_awt_image_DataBufferNative_getElem(JNIEnv *env, jobject dbn,

                                            jint x, jint y, jobject sd)

{

    jint returnVal = -1;

    unsigned char *pixelPtr;

    SurfaceDataRasInfo lockInfo;

    SurfaceDataOps *ops;

    lockInfo.rasBase = NULL;

    ops = SurfaceData_GetOps(env, sd);

    JNU_CHECK_EXCEPTION_RETURN(env, -1);

    if (!(pixelPtr = DBN_GetPixelPointer(env, x, y, &lockInfo,

                                         ops, SD_LOCK_READ)))

    {

        return returnVal;

    }

    switch (lockInfo.pixelStride) {

    case 4:

        returnVal = *(int *)pixelPtr;

        break;

    /* REMIND: do we need a 3-byte case (for 24-bit) here? */

    case 2:

        returnVal = *(unsigned short *)pixelPtr;

        break;

    case 1:

        returnVal = *pixelPtr;

        break;

    default:

        break;

    }

    SurfaceData_InvokeRelease(env, ops, &lockInfo);

    SurfaceData_InvokeUnlock(env, ops, &lockInfo);

    return returnVal;

}

/*

 * Class:     sun_awt_image_DataBufferNative

 * Method:    setElem

 * Signature:

 */

JNIEXPORT void JNICALL

Java_sun_awt_image_DataBufferNative_setElem(JNIEnv *env, jobject dbn,

                                            jint x, jint y, jint val, jobject sd)

{

    SurfaceDataRasInfo lockInfo;

    SurfaceDataOps *ops;

    unsigned char *pixelPtr;

    lockInfo.rasBase = NULL;

    ops = SurfaceData_GetOps(env, sd);

    JNU_CHECK_EXCEPTION(env);

    if (!(pixelPtr = DBN_GetPixelPointer(env, x, y, &lockInfo,

                                         ops, SD_LOCK_WRITE)))

    {

        return;

    }

    switch (lockInfo.pixelStride) {

    case 4:

        *(int *)pixelPtr = val;

        break;

    /* REMIND: do we need a 3-byte case (for 24-bit) here? */

    case 2:

        *(unsigned short *)pixelPtr = (unsigned short)val;

        break;

    case 1:

        *pixelPtr = (unsigned char)val;

        break;

    default:

        break;

    }

    SurfaceData_InvokeRelease(env, ops, &lockInfo);

    SurfaceData_InvokeUnlock(env, ops, &lockInfo);

}