165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/* 265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Copyright (C) 2011 The Android Open Source Project 365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Licensed under the Apache License, Version 2.0 (the "License"); 565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * you may not use this file except in compliance with the License. 665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * You may obtain a copy of the License at 765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * http://www.apache.org/licenses/LICENSE-2.0 965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 1065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Unless required by applicable law or agreed to in writing, software 1165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * distributed under the License is distributed on an "AS IS" BASIS, 1265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * See the License for the specific language governing permissions and 1465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * limitations under the License. 1565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 1665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#include "jni/jni_native_buffer.h" 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn#include "jni/jni_util.h" 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennchar* GetJBufferData(JNIEnv* env, jobject buffer, int* size) { 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jclass base_class = env->FindClass("android/filterfw/core/NativeBuffer"); 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get fields 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jfieldID ptr_field = env->GetFieldID(base_class, "mDataPointer", "J"); 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jfieldID size_field = env->GetFieldID(base_class, "mSize", "I"); 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get their values 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn char* data = reinterpret_cast<char*>(env->GetLongField(buffer, ptr_field)); 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (size) { 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn *size = env->GetIntField(buffer, size_field); 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Clean-up 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn env->DeleteLocalRef(base_class); 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return data; 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennbool AttachDataToJBuffer(JNIEnv* env, jobject buffer, char* data, int size) { 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jclass base_class = env->FindClass("android/filterfw/core/NativeBuffer"); 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get fields 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jfieldID ptr_field = env->GetFieldID(base_class, "mDataPointer", "J"); 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jfieldID size_field = env->GetFieldID(base_class, "mSize", "I"); 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Set their values 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn env->SetLongField(buffer, ptr_field, reinterpret_cast<jlong>(data)); 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn env->SetIntField(buffer, size_field, size); 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return true; 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennjboolean Java_android_filterfw_core_NativeBuffer_allocate(JNIEnv* env, jobject thiz, jint size) { 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn char* data = new char[size]; 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return ToJBool(AttachDataToJBuffer(env, thiz, data, size)); 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennjboolean Java_android_filterfw_core_NativeBuffer_deallocate(JNIEnv* env, 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jobject thiz, 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jboolean owns_data) { 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (ToCppBool(owns_data)) { 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn char* data = GetJBufferData(env, thiz, NULL); 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn delete[] data; 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return JNI_TRUE; 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennjboolean Java_android_filterfw_core_NativeBuffer_nativeCopyTo(JNIEnv* env, 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jobject thiz, 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn jobject new_buffer) { 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Get source buffer 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn int size; 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn char* source_data = GetJBufferData(env, thiz, &size); 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Make copy 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn char* target_data = new char[size]; 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn memcpy(target_data, source_data, size); 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Attach it to new buffer 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn AttachDataToJBuffer(env, new_buffer, target_data, size); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return JNI_TRUE; 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 85