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 ANDROID_OS_HW_BLOB_H 18 #define ANDROID_OS_HW_BLOB_H 19 20 #include <android-base/macros.h> 21 #include <jni.h> 22 #include <hidl/HidlSupport.h> 23 #include <hwbinder/Parcel.h> 24 #include <utils/RefBase.h> 25 #include <utils/Vector.h> 26 27 namespace android { 28 29 struct JHwBlob : public RefBase { 30 static void InitClass(JNIEnv *env); 31 32 static sp<JHwBlob> SetNativeContext( 33 JNIEnv *env, jobject thiz, const sp<JHwBlob> &context); 34 35 static sp<JHwBlob> GetNativeContext(JNIEnv *env, jobject thiz); 36 37 static jobject NewObject(JNIEnv *env, const void *ptr, size_t handle); 38 static jobject NewObject(JNIEnv *env, size_t size); 39 40 JHwBlob(JNIEnv *env, jobject thiz, size_t size); 41 42 void setTo(const void *ptr, size_t handle); 43 44 status_t getHandle(size_t *handle) const; 45 46 status_t read(size_t offset, void *data, size_t size) const; 47 status_t write(size_t offset, const void *data, size_t size); 48 49 status_t getString( 50 size_t offset, const android::hardware::hidl_string **s) const; 51 52 const void *data() const; 53 void *data(); 54 55 size_t size() const; 56 57 status_t putBlob(size_t offset, const sp<JHwBlob> &blob); 58 59 status_t writeToParcel(hardware::Parcel *parcel) const; 60 61 status_t writeEmbeddedToParcel( 62 hardware::Parcel *parcel, 63 size_t parentHandle, 64 size_t parentOffset) const; 65 66 protected: 67 virtual ~JHwBlob(); 68 69 private: 70 struct BlobInfo { 71 size_t mOffset; 72 sp<JHwBlob> mBlob; 73 }; 74 75 void *mBuffer; 76 size_t mSize; 77 bool mOwnsBuffer; 78 79 size_t mHandle; 80 81 Vector<BlobInfo> mSubBlobs; 82 83 DISALLOW_COPY_AND_ASSIGN(JHwBlob); 84 }; 85 86 int register_android_os_HwBlob(JNIEnv *env); 87 88 } // namespace android 89 90 #endif // ANDROID_OS_HW_BLOB_H 91 92
