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 */ 30extern "C" { 31GL_API void GL_APIENTRY glColorPointerBounds(GLint size, GLenum type, GLsizei stride, 32 const GLvoid *ptr, GLsizei count); 33GL_API void GL_APIENTRY glNormalPointerBounds(GLenum type, GLsizei stride, 34 const GLvoid *pointer, GLsizei count); 35GL_API void GL_APIENTRY glTexCoordPointerBounds(GLint size, GLenum type, 36 GLsizei stride, const GLvoid *pointer, GLsizei count); 37GL_API void GL_APIENTRY glVertexPointerBounds(GLint size, GLenum type, 38 GLsizei stride, const GLvoid *pointer, GLsizei count); 39} 40 41static int initialized = 0; 42 43static jclass nioAccessClass; 44static jclass bufferClass; 45static jmethodID getBasePointerID; 46static jmethodID getBaseArrayID; 47static jmethodID getBaseArrayOffsetID; 48static jfieldID positionID; 49static jfieldID limitID; 50static jfieldID elementSizeShiftID; 51 52/* Cache method IDs each time the class is loaded. */ 53 54static void 55nativeClassInit(JNIEnv *_env, jclass glImplClass) 56{ 57 jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess"); 58 nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal); 59 60 jclass bufferClassLocal = _env->FindClass("java/nio/Buffer"); 61 bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal); 62 63 getBasePointerID = _env->GetStaticMethodID(nioAccessClass, 64 "getBasePointer", "(Ljava/nio/Buffer;)J"); 65 getBaseArrayID = _env->GetStaticMethodID(nioAccessClass, 66 "getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;"); 67 getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass, 68 "getBaseArrayOffset", "(Ljava/nio/Buffer;)I"); 69 70 positionID = _env->GetFieldID(bufferClass, "position", "I"); 71 limitID = _env->GetFieldID(bufferClass, "limit", "I"); 72 elementSizeShiftID = 73 _env->GetFieldID(bufferClass, "_elementSizeShift", "I"); 74} 75 76static void * 77getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset) 78{ 79 jint position; 80 jint limit; 81 jint elementSizeShift; 82 jlong pointer; 83 84 position = _env->GetIntField(buffer, positionID); 85 limit = _env->GetIntField(buffer, limitID); 86 elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 87 *remaining = (limit - position) << elementSizeShift; 88 pointer = _env->CallStaticLongMethod(nioAccessClass, 89 getBasePointerID, buffer); 90 if (pointer != 0L) { 91 *array = NULL; 92 return (void *) (jint) pointer; 93 } 94 95 *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass, 96 getBaseArrayID, buffer); 97 *offset = _env->CallStaticIntMethod(nioAccessClass, 98 getBaseArrayOffsetID, buffer); 99 100 return NULL; 101} 102 103static void 104releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit) 105{ 106 _env->ReleasePrimitiveArrayCritical(array, data, 107 commit ? 0 : JNI_ABORT); 108} 109 110static void * 111getDirectBufferPointer(JNIEnv *_env, jobject buffer) { 112 char* buf = (char*) _env->GetDirectBufferAddress(buffer); 113 if (buf) { 114 jint position = _env->GetIntField(buffer, positionID); 115 jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID); 116 buf += position << elementSizeShift; 117 } else { 118 jniThrowException(_env, "java/lang/IllegalArgumentException", 119 "Must use a native order direct Buffer"); 120 } 121 return (void*) buf; 122} 123 124static int 125getNumCompressedTextureFormats() { 126 int numCompressedTextureFormats = 0; 127 glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &numCompressedTextureFormats); 128 return numCompressedTextureFormats; 129} 130 131// -------------------------------------------------------------------------- 132