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/*
* Copyright (C) 2016 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_OS_HW_BLOB_H
#define ANDROID_OS_HW_BLOB_H
#include <android-base/macros.h>
#include <jni.h>
#include <hidl/HidlSupport.h>
#include <hwbinder/Parcel.h>
#include <utils/RefBase.h>
#include <utils/Vector.h>
namespace android {
struct JHwBlob : public RefBase {
enum class BlobType {
GENERIC,
NATIVE_HANDLE,
};
static void InitClass(JNIEnv *env);
static sp<JHwBlob> SetNativeContext(
JNIEnv *env, jobject thiz, const sp<JHwBlob> &context);
static sp<JHwBlob> GetNativeContext(JNIEnv *env, jobject thiz);
static jobject NewObject(JNIEnv *env, const void *ptr, size_t handle);
static jobject NewObject(JNIEnv *env, size_t size);
JHwBlob(JNIEnv *env, jobject thiz, size_t size);
void setTo(const void *ptr, size_t handle);
status_t getHandle(size_t *handle) const;
status_t read(size_t offset, void *data, size_t size) const;
status_t write(size_t offset, const void *data, size_t size);
status_t getString(
size_t offset, const android::hardware::hidl_string **s) const;
const void *data() const;
void *data();
size_t size() const;
void specializeBlobTo(BlobType type);
BlobType type() const;
status_t putBlob(size_t offset, const sp<JHwBlob> &blob);
status_t writeToParcel(hardware::Parcel *parcel) const;
status_t writeEmbeddedToParcel(
hardware::Parcel *parcel,
size_t parentHandle,
size_t parentOffset) const;
protected:
virtual ~JHwBlob();
private:
struct BlobInfo {
size_t mOffset;
sp<JHwBlob> mBlob;
};
void *mBuffer;
size_t mSize;
BlobType mType;
bool mOwnsBuffer;
size_t mHandle;
Vector<BlobInfo> mSubBlobs;
status_t writeSubBlobsToParcel(hardware::Parcel *parcel, size_t parentHandle) const;
DISALLOW_COPY_AND_ASSIGN(JHwBlob);
};
int register_android_os_HwBlob(JNIEnv *env);
} // namespace android
#endif // ANDROID_OS_HW_BLOB_H
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