1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2011 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1714d0c6c7c0e9abd39e4b4d0a384d12de5ecbdbfcJeff Brown#include "jni/jni_native_buffer.h" 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "jni/jni_util.h" 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectchar* GetJBufferData(JNIEnv* env, jobject buffer, int* size) { 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jclass base_class = env->FindClass("android/filterfw/core/NativeBuffer"); 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Get fields 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jfieldID ptr_field = env->GetFieldID(base_class, "mDataPointer", "J"); 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jfieldID size_field = env->GetFieldID(base_class, "mSize", "I"); 26f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling 27f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling // Get their values 28f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling char* data = reinterpret_cast<char*>(env->GetLongField(buffer, ptr_field)); 29f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling if (size) { 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *size = env->GetIntField(buffer, size_field); 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Clean-up 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project env->DeleteLocalRef(base_class); 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return data; 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectbool AttachDataToJBuffer(JNIEnv* env, jobject buffer, char* data, int size) { 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jclass base_class = env->FindClass("android/filterfw/core/NativeBuffer"); 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Get fields 43f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling jfieldID ptr_field = env->GetFieldID(base_class, "mDataPointer", "J"); 44f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling jfieldID size_field = env->GetFieldID(base_class, "mSize", "I"); 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Set their values 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project env->SetLongField(buffer, ptr_field, reinterpret_cast<jlong>(data)); 48f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling env->SetIntField(buffer, size_field, size); 49f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling 50f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling return true; 51f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling} 52f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling 53f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gillingjboolean Java_android_filterfw_core_NativeBuffer_allocate(JNIEnv* env, jobject thiz, jint size) { 54f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling char* data = new char[size]; 55f6eba8fac812c70087af225f207f2d924f6e1ffaErik Gilling return ToJBool(AttachDataToJBuffer(env, thiz, data, size)); 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectjboolean Java_android_filterfw_core_NativeBuffer_deallocate(JNIEnv* env, 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jobject thiz, 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jboolean owns_data) { 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ToCppBool(owns_data)) { 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char* data = GetJBufferData(env, thiz, NULL); 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project delete[] data; 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return JNI_TRUE; 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectjboolean Java_android_filterfw_core_NativeBuffer_nativeCopyTo(JNIEnv* env, 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jobject thiz, 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project jobject new_buffer) { 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Get source buffer 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int size; 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char* source_data = GetJBufferData(env, thiz, &size); 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Make copy 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char* target_data = new char[size]; 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memcpy(target_data, source_data, size); 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // Attach it to new buffer 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project AttachDataToJBuffer(env, new_buffer, target_data, size); 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return JNI_TRUE; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project