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/*
* 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
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