/* * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include #include #include #include #include #define SURFACE_NATIVE_PTR 0 #define SURFACE_DATA_INT 1 #define SURFACE_LAST SURFACE_DATA_INT static jfieldID fieldIds[SURFACE_LAST + 1]; static jboolean fieldIdsInitialized = JNI_FALSE; static jboolean initializeSurfaceFieldIds(JNIEnv *env, jobject objectHandle); static void surface_acquire(AbstractSurface* surface, JNIEnv* env, jobject surfaceHandle); static void surface_release(AbstractSurface* surface, JNIEnv* env, jobject surfaceHandle); static void surface_cleanup(AbstractSurface* surface); typedef struct _JavaSurface { AbstractSurface super; jfieldID javaArrayFieldID; jobject dataHandle; } JavaSurface; /* * Class: com_sun_pisces_JavaSurface * Method: initialize * Signature: (III)V */ JNIEXPORT void JNICALL Java_com_sun_pisces_JavaSurface_initialize (JNIEnv *env, jobject objectHandle, jint dataType, jint width, jint height) { if (surface_initialize(env, objectHandle) && initializeSurfaceFieldIds(env, objectHandle)) { // NOTE: when is this freed? JavaSurface* jSurface = my_malloc(JavaSurface, 1); AbstractSurface* surface = &jSurface->super; if (surface != NULL) { surface->super.width = width; surface->super.height = height; surface->super.offset = 0; surface->super.scanlineStride = width; surface->super.pixelStride = 1; surface->super.imageType = dataType; surface->acquire = surface_acquire; surface->release = surface_release; surface->cleanup = surface_cleanup; switch(surface->super.imageType){ case TYPE_INT_ARGB_PRE: jSurface->javaArrayFieldID = fieldIds[SURFACE_DATA_INT]; break; default: //errorneous - should never happen jSurface->javaArrayFieldID = NULL; } (*env)->SetLongField(env, objectHandle, fieldIds[SURFACE_NATIVE_PTR], PointerToJLong(jSurface)); // JNI_registerCleanup(objectHandle, disposeNativeImpl); } else { JNI_ThrowNew(env, "java/lang/OutOfMemoryError", "Allocation of internal renderer buffer failed."); } } else { JNI_ThrowNew(env, "java/lang/IllegalStateException", ""); } } static jboolean initializeSurfaceFieldIds(JNIEnv* env, jobject objectHandle) { static const FieldDesc surfaceFieldDesc[] = { { "nativePtr", "J" }, { "dataInt", "[I" }, { NULL, NULL } }; jboolean retVal; jclass classHandle; if (fieldIdsInitialized) { return JNI_TRUE; } retVal = JNI_FALSE; classHandle = (*env)->GetObjectClass(env, objectHandle); if (initializeFieldIds(fieldIds, env, classHandle, surfaceFieldDesc)) { retVal = JNI_TRUE; fieldIdsInitialized = JNI_TRUE; } return retVal; } static void surface_acquire(AbstractSurface* surface, JNIEnv* env, jobject surfaceHandle) { jint width = 0; jint height = 0; jint dataArrayLength = 0; ((JavaSurface *) surface)->dataHandle = (*env)->GetObjectField(env, surfaceHandle, ((JavaSurface *) surface)->javaArrayFieldID); dataArrayLength = (*env)->GetArrayLength(env, ((JavaSurface *) surface)->dataHandle); width = surface->super.width; height = surface->super.height; if (width < 0 || height < 0 || dataArrayLength / width < height) { // Set data to NULL indicating invalid width and height surface->super.data = NULL; ((JavaSurface *) surface)->dataHandle = NULL; JNI_ThrowNew(env, "java/lang/IllegalArgumentException", "Out of range access of buffer"); return; } surface->super.data = (void *)(*env)->GetPrimitiveArrayCritical(env, ((JavaSurface *) surface)->dataHandle, NULL); if (surface->super.data == NULL) { ((JavaSurface *) surface)->dataHandle = NULL; setMemErrorFlag(); } } static void surface_release(AbstractSurface* surface, JNIEnv* env, jobject surfaceHandle) { if (surface->super.data == NULL) return; (*env)->ReleasePrimitiveArrayCritical(env, ((JavaSurface *) surface)->dataHandle, surface->super.data, 0); ((JavaSurface *) surface)->dataHandle = NULL; } static void surface_cleanup(AbstractSurface* surface) { // do nothing }