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/* special calls implemented in Android's GLES wrapper used to more 27 * efficiently bound-check passed arrays */ 28extern "C" { 29GL_API void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, GLsizei stride, 30 const GLvoid *ptr, GLsizei count); 31} 32 33static int initialized = 0; 34 35static jclass nioAccessClass; 36static jclass bufferClass; 37static jclass OOMEClass; 38static jclass UOEClass; 39static jclass IAEClass; 40static jclass AIOOBEClass; 41static jmethodID getBasePointerID; 42static jmethodID getBaseArrayID; 43static jmethodID getBaseArrayOffsetID; 44static jfieldID positionID; 45static jfieldID limitID; 46static jfieldID elementSizeShiftID; 47 48/* Cache method IDs each time the class is loaded. */ 49 50static void 51nativeClassInitBuffer(JNIEnv *_env) 52{ 53 jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess"); 54 nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal); 55 56 jclass bufferClassLocal = _env->FindClass("java/nio/Buffer"); 57 bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal); 58 59 getBasePointerID = _env->GetStaticMethodID(nioAccessClass, 60 "getBasePointer", "(Ljava/nio/Buffer;)J"); 61 getBaseArrayID = _env->GetStaticMethodID(nioAccessClass, 62 "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;"); 63 getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass, 64 "getBaseArrayOffset", "(Ljava/nio/Buffer;)I"); 65 66 positionID = _env->GetFieldID(bufferClass, "position", "I"); 67 limitID = _env->GetFieldID(bufferClass, "limit", "I"); 68 elementSizeShiftID = 69 _env->GetFieldID(bufferClass, "_elementSizeShift", "I"); 70} 71 72 73static void 74nativeClassInit(JNIEnv *_env, jclass glImplClass) 75{ 76 nativeClassInitBuffer(_env); 77 78 jclass IAEClassLocal = 79 _env->FindClass("java/lang/IllegalArgumentException"); 80 jclass OOMEClassLocal = 81 _env->FindClass("java/lang/OutOfMemoryError"); 82 jclass UOEClassLocal = 83 _env->FindClass("java/lang/UnsupportedOperationException"); 84 jclass AIOOBEClassLocal = 85 _env->FindClass("java/lang/ArrayIndexOutOfBoundsException"); 86 87 IAEClass = (jclass) _env->NewGlobalRef(IAEClassLocal); 88 OOMEClass = (jclass) _env->NewGlobalRef(OOMEClassLocal); 89 UOEClass = (jclass) _env->NewGlobalRef(UOEClassLocal); 90 AIOOBEClass = (jclass) _env->NewGlobalRef(AIOOBEClassLocal); 91} 92 93static void * 94getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining) 95{ 96 jint position; 97 jint limit; 98 jint elementSizeShift; 99 jlong pointer; 100 jint offset; 101 void *data; 102 103 position = _env->GetIntField(buffer, positionID); 104 limit = _env->GetIntField(buffer, limitID); 105 elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 106 *remaining = (limit - position) << elementSizeShift; 107 pointer = _env->CallStaticLongMethod(nioAccessClass, 108 getBasePointerID, buffer); 109 if (pointer != 0L) { 110 *array = NULL; 111 return (void *) (jint) pointer; 112 } 113 114 *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass, 115 getBaseArrayID, buffer); 116 offset = _env->CallStaticIntMethod(nioAccessClass, 117 getBaseArrayOffsetID, buffer); 118 data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0); 119 120 return (void *) ((char *) data + offset); 121} 122 123 124static void 125releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit) 126{ 127 _env->ReleasePrimitiveArrayCritical(array, data, 128 commit ? 0 : JNI_ABORT); 129} 130 131static void * 132getDirectBufferPointer(JNIEnv *_env, jobject buffer) { 133 char* buf = (char*) _env->GetDirectBufferAddress(buffer); 134 if (buf) { 135 jint position = _env->GetIntField(buffer, positionID); 136 jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 137 buf += position << elementSizeShift; 138 } else { 139 _env->ThrowNew(IAEClass, "Must use a native order direct Buffer"); 140 } 141 return (void*) buf; 142} 143 144// -------------------------------------------------------------------------- 145 146