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**
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
// This source file is automatically generated
#include "jni.h"
#include "JNIHelp.h"
#include <android_runtime/AndroidRuntime.h>
#include <utils/misc.h>
#include <assert.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
/* special calls implemented in Android's GLES wrapper used to more
* efficiently bound-check passed arrays */
extern "C" {
GL_API void GL_APIENTRY glPointSizePointerOESBounds(GLenum type, GLsizei stride,
const GLvoid *ptr, GLsizei count);
}
static int initialized = 0;
static jclass nioAccessClass;
static jclass bufferClass;
static jmethodID getBasePointerID;
static jmethodID getBaseArrayID;
static jmethodID getBaseArrayOffsetID;
static jfieldID positionID;
static jfieldID limitID;
static jfieldID elementSizeShiftID;
/* Cache method IDs each time the class is loaded. */
static void
nativeClassInit(JNIEnv *_env, jclass glImplClass)
{
jclass nioAccessClassLocal = _env->FindClass("java/nio/NIOAccess");
nioAccessClass = (jclass) _env->NewGlobalRef(nioAccessClassLocal);
jclass bufferClassLocal = _env->FindClass("java/nio/Buffer");
bufferClass = (jclass) _env->NewGlobalRef(bufferClassLocal);
getBasePointerID = _env->GetStaticMethodID(nioAccessClass,
"getBasePointer", "(Ljava/nio/Buffer;)J");
getBaseArrayID = _env->GetStaticMethodID(nioAccessClass,
"getBaseArray", "(Ljava/nio/Buffer;)Ljava/lang/Object;");
getBaseArrayOffsetID = _env->GetStaticMethodID(nioAccessClass,
"getBaseArrayOffset", "(Ljava/nio/Buffer;)I");
positionID = _env->GetFieldID(bufferClass, "position", "I");
limitID = _env->GetFieldID(bufferClass, "limit", "I");
elementSizeShiftID =
_env->GetFieldID(bufferClass, "_elementSizeShift", "I");
}
static void *
getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
{
jint position;
jint limit;
jint elementSizeShift;
jlong pointer;
jint offset;
void *data;
position = _env->GetIntField(buffer, positionID);
limit = _env->GetIntField(buffer, limitID);
elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID);
*remaining = (limit - position) << elementSizeShift;
pointer = _env->CallStaticLongMethod(nioAccessClass,
getBasePointerID, buffer);
if (pointer != 0L) {
*array = NULL;
return (void *) (jint) pointer;
}
*array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
getBaseArrayID, buffer);
offset = _env->CallStaticIntMethod(nioAccessClass,
getBaseArrayOffsetID, buffer);
data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
return (void *) ((char *) data + offset);
}
static void
releasePointer(JNIEnv *_env, jarray array, void *data, jboolean commit)
{
_env->ReleasePrimitiveArrayCritical(array, data,
commit ? 0 : JNI_ABORT);
}
static void *
getDirectBufferPointer(JNIEnv *_env, jobject buffer) {
char* buf = (char*) _env->GetDirectBufferAddress(buffer);
if (buf) {
jint position = _env->GetIntField(buffer, positionID);
jint elementSizeShift = _env->GetIntField(buffer, elementSizeShiftID);
buf += position << elementSizeShift;
} else {
jniThrowException(_env, "java/lang/IllegalArgumentException",
"Must use a native order direct Buffer");
}
return (void*) buf;
}
// --------------------------------------------------------------------------
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