1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef EPHEMERAL_STORAGE_H_
18
19#define EPHEMERAL_STORAGE_H_
20
21#include <android-base/macros.h>
22#include <hidl/HidlSupport.h>
23#include <jni.h>
24#include <utils/Vector.h>
25
26namespace android {
27
28#define DECLARE_ALLOC_METHODS(Suffix,Type)                          \
29    const ::android::hardware::hidl_vec<Type> *                     \
30    allocTemporary ## Suffix ## Vector(                             \
31            JNIEnv *env, Type ## Array arrayObj);
32
33struct EphemeralStorage {
34    EphemeralStorage();
35    ~EphemeralStorage();
36
37    void release(JNIEnv *env);
38
39    hardware::hidl_string *allocStringArray(size_t size);
40
41    void *allocTemporaryStorage(size_t size);
42
43    const ::android::hardware::hidl_string *allocTemporaryString(
44            JNIEnv *env, jstring stringObj);
45
46    DECLARE_ALLOC_METHODS(Int8,jbyte)
47    DECLARE_ALLOC_METHODS(Int16,jshort)
48    DECLARE_ALLOC_METHODS(Int32,jint)
49    DECLARE_ALLOC_METHODS(Int64,jlong)
50    DECLARE_ALLOC_METHODS(Float,jfloat)
51    DECLARE_ALLOC_METHODS(Double,jdouble)
52
53private:
54    enum Type {
55        TYPE_STRING_ARRAY,
56        TYPE_STORAGE,
57        TYPE_STRING,
58        TYPE_Int8_ARRAY,
59        TYPE_Int16_ARRAY,
60        TYPE_Int32_ARRAY,
61        TYPE_Int64_ARRAY,
62        TYPE_Float_ARRAY,
63        TYPE_Double_ARRAY,
64    };
65
66    struct Item {
67        Type mType;
68        jobject mObj;
69        void *mPtr;
70    };
71
72    Vector<Item> mItems;
73
74    DISALLOW_COPY_AND_ASSIGN(EphemeralStorage);
75};
76
77#undef DECLARE_ALLOC_METHODS
78
79}  // namespace android
80
81#endif  // EPHEMERAL_STORAGE_H_
82