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95 lines
2.3 KiB
95 lines
2.3 KiB
7 months ago
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef RASTERMILL_STREAM_H
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#define RASTERMILL_STREAM_H
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#include <jni.h>
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#include <stdio.h>
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#include <sys/types.h>
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class Stream {
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public:
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Stream();
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virtual ~Stream();
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size_t peek(void* buffer, size_t size);
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size_t read(void* buffer, size_t size);
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virtual uint8_t* getRawBufferAddr();
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virtual jobject getRawBuffer();
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virtual int getRawBufferSize();
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protected:
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virtual size_t doRead(void* buffer, size_t size) = 0;
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private:
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char* mPeekBuffer;
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size_t mPeekSize;
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size_t mPeekOffset;
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};
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class MemoryStream : public Stream {
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public:
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MemoryStream(void* buffer, size_t size, jobject buf) :
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mBuffer((uint8_t*)buffer),
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mRemaining(size),
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mRawBuffer(buf) {}
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virtual uint8_t* getRawBufferAddr();
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virtual jobject getRawBuffer();
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virtual int getRawBufferSize();
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protected:
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virtual size_t doRead(void* buffer, size_t size);
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private:
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uint8_t* mBuffer;
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size_t mRemaining;
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jobject mRawBuffer;
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};
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class FileStream : public Stream {
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public:
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FileStream(FILE* fd) : mFd(fd) {}
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protected:
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virtual size_t doRead(void* buffer, size_t size);
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private:
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FILE* mFd;
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};
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class JavaInputStream : public Stream {
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public:
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JavaInputStream(JNIEnv* env, jobject inputStream, jbyteArray byteArray) :
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mEnv(env),
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mInputStream(inputStream),
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mByteArray(byteArray),
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mByteArrayLength(env->GetArrayLength(byteArray)) {}
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protected:
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virtual size_t doRead(void* buffer, size_t size);
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private:
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JNIEnv* mEnv;
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const jobject mInputStream;
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const jbyteArray mByteArray;
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const size_t mByteArrayLength;
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};
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jint JavaStream_OnLoad(JNIEnv* env);
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#endif //RASTERMILL_STREAM_H
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