hkBufferedStreamReader.h
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上传日期:2020-08-09
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其他游戏
开发平台:
Visual C++
- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HKBASE_BUFFERED_STREAMREADER_H
- #define HKBASE_BUFFERED_STREAMREADER_H
- #include <Common/Base/System/Io/Reader/hkStreamReader.h>
- /// Wraps and buffers an existing unbuffered stream.
- class hkBufferedStreamReader : public hkStreamReader
- {
- public:
- /// Create a buffered stream from stream 's' with size 'bufSize'.
- /// Adds a reference to 's'.
- hkBufferedStreamReader(hkStreamReader* s, int bufSize=4096);
- /// Removes reference to the reader in the constructor if applicable.
- ~hkBufferedStreamReader();
- virtual int read(void* buf, int nbytes);
- virtual int skip(int nbytes);
- virtual hkBool isOk() const;
- /// Marks up to buffer size are supported.
- virtual hkBool markSupported() const;
- /// Marks up to buffer size are supported.
- virtual hkResult setMark(int markLimit);
- /// Marks up to buffer size are supported.
- virtual hkResult rewindToMark();
- virtual hkBool seekTellSupported() const;
- virtual hkResult seek( int offset, SeekWhence whence);
- virtual int tell() const;
- protected:
- hkStreamReader* m_stream; // child stream
- struct Buffer
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_BASE_CLASS, hkBufferedStreamReader::Buffer );
- Buffer(int cap);
- ~Buffer();
- char* begin;
- int current; // current byte index
- int size; // end of usable buffer size - only less than capacity on short read
- int capacity; // buffer region is begin,begin+m_capacity
- int markPos; // start of marked region
- int markLimit; // end of marked region
- };
- Buffer m_buf;
- protected:
- /// Move marked area to start of buffer if necessary.
- void prepareBufferForRefill();
- /// Actually fill the available area of the buffer.
- virtual hkResult refillBuffer();
- };
- #endif //HKBASE_BUFFERED_STREAMREADER_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */