1 **
2 ** Copyright 2009, The Android Open Source Project
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 ** http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16
17 // This source file is automatically generated
18
19 #include <android_runtime/AndroidRuntime.h>
20 #include <utils/misc.h>
21
22 #include <assert.h>
23 #include <GLES/gl.h>
24 #include <GLES/glext.h>
25
26 static int initialized = 0;
27
28 static jclass nioAccessClass;
29 static jclass bufferClass;
30 static jclass OOMEClass;
31 static jclass UOEClass;
32 static jclass IAEClass;
33 static jclass AIOOBEClass;
34 static jmethodID getBasePointerID;
35 static jmethodID getBaseArrayID;
36 static jmethodID getBaseArrayOffsetID;
37 static jfieldID positionID;
38 static jfieldID limitID;
39 static jfieldID elementSizeShiftID;
40
41 /* Cache method IDs each time the class is loaded. */
42
43 static void
nativeClassInitBuffer(JNIEnv * _env)44 nativeClassInitBuffer(JNIEnv *_env)
45 {
46 jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess");
47 nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal);
48
49 jclass bufferClassLocal = _env->FindClass("java/nio/Buffer");
50 bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal);
51
52 getBasePointerID = _env->GetStaticMethodID(nioAccessClass,
53 "getBasePointer", "(Ljava/nio/Buffer;)J");
54 getBaseArrayID = _env->GetStaticMethodID(nioAccessClass,
55 "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;");
56 getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass,
57 "getBaseArrayOffset", "(Ljava/nio/Buffer;)I");
58
59 positionID = _env->GetFieldID(bufferClass, "position", "I");
60 limitID = _env->GetFieldID(bufferClass, "limit", "I");
61 elementSizeShiftID =
62 _env->GetFieldID(bufferClass, "_elementSizeShift", "I");
63 }
64
65
66 static void
nativeClassInit(JNIEnv * _env,jclass glImplClass)67 nativeClassInit(JNIEnv *_env, jclass glImplClass)
68 {
69 nativeClassInitBuffer(_env);
70
71 jclass IAEClassLocal =
72 _env->FindClass("java/lang/IllegalArgumentException");
73 jclass OOMEClassLocal =
74 _env->FindClass("java/lang/OutOfMemoryError");
75 jclass UOEClassLocal =
76 _env->FindClass("java/lang/UnsupportedOperationException");
77 jclass AIOOBEClassLocal =
78 _env->FindClass("java/lang/ArrayIndexOutOfBoundsException");
79
80 IAEClass = (jclass) _env->NewGlobalRef(IAEClassLocal);
81 OOMEClass = (jclass) _env->NewGlobalRef(OOMEClassLocal);
82 UOEClass = (jclass) _env->NewGlobalRef(UOEClassLocal);
83 AIOOBEClass = (jclass) _env->NewGlobalRef(AIOOBEClassLocal);
84 }
85
86 static void *
getPointer(JNIEnv * _env,jobject buffer,jarray * array,jint * remaining)87 getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
88 {
89 jint position;
90 jint limit;
91 jint elementSizeShift;
92 jlong pointer;
93 jint offset;
94 void *data;
95
96 position = _env->GetIntField(buffer, positionID);
97 limit = _env->GetIntField(buffer, limitID);
98 elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID);
99 *remaining = (limit - position) << elementSizeShift;
100 pointer = _env->CallStaticLongMethod(nioAccessClass,
101 getBasePointerID, buffer);
102 if (pointer != 0L) {
103 *array = NULL;
104 return (void *) (jint) pointer;
105 }
106
107 *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
108 getBaseArrayID, buffer);
109 offset = _env->CallStaticIntMethod(nioAccessClass,
110 getBaseArrayOffsetID, buffer);
111 data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
112
113 return (void *) ((char *) data + offset);
114 }
115
116
117 static void
releasePointer(JNIEnv * _env,jarray array,void * data,jboolean commit)118 releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit)
119 {
120 _env->ReleasePrimitiveArrayCritical(array, data,
121 commit ? 0 : JNI_ABORT);
122 }
123
124 // --------------------------------------------------------------------------
125
126