--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/native/sun/awt/image/DataBufferNative.c	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2000-2003 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+#include "malloc.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;
+
+    ops = SurfaceData_GetOps(env, sd);
+
+    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;
+
+
+    ops = SurfaceData_GetOps(env, sd);
+
+    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);
+}