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 "jni.h" 20 #include "JNIHelp.h" 21 #include <android_runtime/AndroidRuntime.h> 22 #include <utils/misc.h> 23 24 #include <assert.h> 25 #include <GLES/gl.h> 26 #include <GLES/glext.h> 27 28 /* special calls implemented in Android's GLES wrapper used to more 29 * efficiently bound-check passed arrays */ 30 extern "C" { 31 GL_API void GL_APIENTRY glMatrixIndexPointerOESBounds(GLint size, GLenum type, GLsizei stride, 32 const GLvoid *ptr, GLsizei count); 33 GL_API void GL_APIENTRY glWeightPointerOESBounds(GLint size, GLenum type, GLsizei stride, 34 const GLvoid *ptr, GLsizei count); 35 } 36 37 static int initialized = 0; 38 39 static jclass nioAccessClass; 40 static jclass bufferClass; 41 static jmethodID getBasePointerID; 42 static jmethodID getBaseArrayID; 43 static jmethodID getBaseArrayOffsetID; 44 static jfieldID positionID; 45 static jfieldID limitID; 46 static jfieldID elementSizeShiftID; 47 48 /* Cache method IDs each time the class is loaded. */ 49 50 static void 51 nativeClassInit(JNIEnv *_env, jclass glImplClass) 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 73 static void * 74 getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining) 75 { 76 jint position; 77 jint limit; 78 jint elementSizeShift; 79 jlong pointer; 80 jint offset; 81 void *data; 82 83 position = _env->GetIntField(buffer, positionID); 84 limit = _env->GetIntField(buffer, limitID); 85 elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 86 *remaining = (limit - position) << elementSizeShift; 87 pointer = _env->CallStaticLongMethod(nioAccessClass, 88 getBasePointerID, buffer); 89 if (pointer != 0L) { 90 *array = NULL; 91 return (void *) (jint) pointer; 92 } 93 94 *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass, 95 getBaseArrayID, buffer); 96 offset = _env->CallStaticIntMethod(nioAccessClass, 97 getBaseArrayOffsetID, buffer); 98 data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0); 99 100 return (void *) ((char *) data + offset); 101 } 102 103 104 static void 105 releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit) 106 { 107 _env->ReleasePrimitiveArrayCritical(array, data, 108 commit ? 0 : JNI_ABORT); 109 } 110 111 static void * 112 getDirectBufferPointer(JNIEnv *_env, jobject buffer) { 113 char* buf = (char*) _env->GetDirectBufferAddress(buffer); 114 if (buf) { 115 jint position = _env->GetIntField(buffer, positionID); 116 jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 117 buf += position << elementSizeShift; 118 } else { 119 jniThrowException(_env, "java/lang/IllegalArgumentException", 120 "Must use a native order direct Buffer"); 121 } 122 return (void*) buf; 123 } 124 // -------------------------------------------------------------------------- 125