| /* |
| * Copyright (C) 2013 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 RASTERMILL_STREAM_H |
| #define RASTERMILL_STREAM_H |
| |
| #include <jni.h> |
| #include <stdio.h> |
| #include <sys/types.h> |
| |
| class Stream { |
| public: |
| Stream(); |
| virtual ~Stream(); |
| |
| size_t peek(void* buffer, size_t size); |
| size_t read(void* buffer, size_t size); |
| |
| protected: |
| virtual size_t doRead(void* buffer, size_t size) = 0; |
| |
| private: |
| char* mPeekBuffer; |
| size_t mPeekSize; |
| size_t mPeekOffset; |
| }; |
| |
| class MemoryStream : public Stream { |
| public: |
| MemoryStream(void* buffer, size_t size) : |
| mBuffer((char*)buffer), |
| mRemaining(size) {} |
| |
| protected: |
| virtual size_t doRead(void* buffer, size_t size); |
| |
| private: |
| char* mBuffer; |
| size_t mRemaining; |
| }; |
| |
| class FileStream : public Stream { |
| public: |
| FileStream(FILE* fd) : mFd(fd) {} |
| |
| protected: |
| virtual size_t doRead(void* buffer, size_t size); |
| |
| private: |
| FILE* mFd; |
| }; |
| |
| class JavaInputStream : public Stream { |
| public: |
| JavaInputStream(JNIEnv* env, jobject inputStream, jbyteArray byteArray) : |
| mEnv(env), |
| mInputStream(inputStream), |
| mByteArray(byteArray), |
| mByteArrayLength(env->GetArrayLength(byteArray)) {} |
| |
| protected: |
| virtual size_t doRead(void* buffer, size_t size); |
| |
| private: |
| JNIEnv* mEnv; |
| const jobject mInputStream; |
| const jbyteArray mByteArray; |
| const size_t mByteArrayLength; |
| }; |
| |
| jint JavaStream_OnLoad(JNIEnv* env); |
| |
| #endif //RASTERMILL_STREAM_H |