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/*
* Copyright (C) 2011 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.
*/
#ifndef ANDROID_FILTEFW_JNI_NATIVE_BUFFER_H
#define ANDROID_FILTEFW_JNI_NATIVE_BUFFER_H
#include <jni.h>
// Internal Buffer Unwrapping functions ////////////////////////////////////////////////////////////
/**
* Given a Java NativeBuffer instance, get access to the underlying C pointer and its size. The
* size argument may be NULL, in which case the object is not queried for its size.
**/
char* GetJBufferData(JNIEnv* env, jobject buffer, int* size);
/**
* Attach a given C data buffer and its size to a given allocated Java NativeBuffer instance. After
* this call, the java instance will have the given C buffer as its backing. Note, that the Java
* instance contains the flag on whether or not it owns the buffer or not, so make sure it is what
* you expect.
**/
bool AttachDataToJBuffer(JNIEnv* env, jobject buffer, char* data, int size);
#ifdef __cplusplus
extern "C" {
#endif
// JNI Wrappers ////////////////////////////////////////////////////////////////////////////////////
JNIEXPORT jboolean JNICALL
Java_android_filterfw_core_NativeBuffer_allocate(JNIEnv* env, jobject thiz, jint size);
JNIEXPORT jboolean JNICALL
Java_android_filterfw_core_NativeBuffer_deallocate(JNIEnv* env, jobject thiz, jboolean owns_data);
JNIEXPORT jboolean JNICALL
Java_android_filterfw_core_NativeBuffer_nativeCopyTo(JNIEnv* env, jobject thiz, jobject new_buffer);
#ifdef __cplusplus
}
#endif
#endif // ANDROID_FILTEFW_JNI_NATIVE_BUFFER_H
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