1 /*
2 * Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdlib.h>
27
28 #include "SurfaceData.h"
29 #include "sun_awt_image_DataBufferNative.h"
30
31 #include "jni_util.h"
32 #include "debug_trace.h"
33 #include <stdio.h>
34
DBN_GetPixelPointer(JNIEnv * env,jint x,int y,SurfaceDataRasInfo * lockInfo,SurfaceDataOps * ops,int lockFlag)35 unsigned char *DBN_GetPixelPointer(JNIEnv *env, jint x, int y,
36 SurfaceDataRasInfo *lockInfo,
37 SurfaceDataOps *ops, int lockFlag)
38 {
39 if (ops == NULL) {
40 return NULL;
41 }
42
43 lockInfo->bounds.x1 = x;
44 lockInfo->bounds.y1 = y;
45 lockInfo->bounds.x2 = x + 1;
46 lockInfo->bounds.y2 = y + 1;
47 if (ops->Lock(env, ops, lockInfo, lockFlag) != SD_SUCCESS) {
48 return NULL;
49 }
50 ops->GetRasInfo(env, ops, lockInfo);
51 if (lockInfo->rasBase) {
52 unsigned char *pixelPtr = (
53 (unsigned char*)lockInfo->rasBase +
54 (x * lockInfo->pixelStride + y * lockInfo->scanStride));
55 return pixelPtr;
56 }
57 SurfaceData_InvokeRelease(env, ops, lockInfo);
58 SurfaceData_InvokeUnlock(env, ops, lockInfo);
59 return NULL;
60 }
61
62 /*
63 * Class: sun_awt_image_DataBufferNative
64 * Method: getElem
65 * Signature:
66 */
67 JNIEXPORT jint JNICALL
Java_sun_awt_image_DataBufferNative_getElem(JNIEnv * env,jobject dbn,jint x,jint y,jobject sd)68 Java_sun_awt_image_DataBufferNative_getElem(JNIEnv *env, jobject dbn,
69 jint x, jint y, jobject sd)
70 {
71 jint returnVal = -1;
72 unsigned char *pixelPtr;
73 SurfaceDataRasInfo lockInfo;
74 SurfaceDataOps *ops;
75
76 ops = SurfaceData_GetOps(env, sd);
77 JNU_CHECK_EXCEPTION_RETURN(env, -1);
78
79 if (!(pixelPtr = DBN_GetPixelPointer(env, x, y, &lockInfo,
80 ops, SD_LOCK_READ)))
81 {
82 return returnVal;
83 }
84 switch (lockInfo.pixelStride) {
85 case 4:
86 returnVal = *(int *)pixelPtr;
87 break;
88 /* REMIND: do we need a 3-byte case (for 24-bit) here? */
89 case 2:
90 returnVal = *(unsigned short *)pixelPtr;
91 break;
92 case 1:
93 returnVal = *pixelPtr;
94 break;
95 default:
96 break;
97 }
98 SurfaceData_InvokeRelease(env, ops, &lockInfo);
99 SurfaceData_InvokeUnlock(env, ops, &lockInfo);
100 return returnVal;
101 }
102
103
104 /*
105 * Class: sun_awt_image_DataBufferNative
106 * Method: setElem
107 * Signature:
108 */
109 JNIEXPORT void JNICALL
Java_sun_awt_image_DataBufferNative_setElem(JNIEnv * env,jobject dbn,jint x,jint y,jint val,jobject sd)110 Java_sun_awt_image_DataBufferNative_setElem(JNIEnv *env, jobject dbn,
111 jint x, jint y, jint val, jobject sd)
112 {
113 SurfaceDataRasInfo lockInfo;
114 SurfaceDataOps *ops;
115 unsigned char *pixelPtr;
116
117
118 ops = SurfaceData_GetOps(env, sd);
119 JNU_CHECK_EXCEPTION(env);
120
121 if (!(pixelPtr = DBN_GetPixelPointer(env, x, y, &lockInfo,
122 ops, SD_LOCK_WRITE)))
123 {
124 return;
125 }
126
127 switch (lockInfo.pixelStride) {
128 case 4:
129 *(int *)pixelPtr = val;
130 break;
131 /* REMIND: do we need a 3-byte case (for 24-bit) here? */
132 case 2:
133 *(unsigned short *)pixelPtr = (unsigned short)val;
134 break;
135 case 1:
136 *pixelPtr = (unsigned char)val;
137 break;
138 default:
139 break;
140 }
141 SurfaceData_InvokeRelease(env, ops, &lockInfo);
142 SurfaceData_InvokeUnlock(env, ops, &lockInfo);
143 }
144