* Copyright 2016 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _ADAPTER_IO_H
#define _ADAPTER_IO_H
#include <MediaIO.h>
#include <OS.h>
#include <RWLocker.h>
#include <SupportDefs.h>
class BAdapterIO;
class RelativePositionIO;
class BInputAdapter {
public:
virtual ssize_t Write(const void* buffer, size_t size);
private:
friend class BAdapterIO;
BInputAdapter(BAdapterIO* io);
virtual ~BInputAdapter();
BAdapterIO* fIO;
virtual void _ReservedInputAdapter1();
virtual void _ReservedInputAdapter2();
uint32 _reserved[2];
};
class BAdapterIO : public BMediaIO {
public:
BAdapterIO(
int32 flags,
bigtime_t timeout);
virtual ~BAdapterIO();
virtual void GetFlags(int32* flags) const;
virtual ssize_t ReadAt(off_t position, void* buffer,
size_t size);
virtual ssize_t WriteAt(off_t position,
const void* buffer, size_t size);
virtual off_t Seek(off_t position, uint32 seekMode);
virtual off_t Position() const;
virtual status_t SetSize(off_t size);
virtual status_t GetSize(off_t* size) const;
virtual status_t Open();
virtual bool IsRunning() const;
void SeekCompleted();
status_t SetBuffer(BPositionIO* buffer);
status_t FlushBefore(off_t position);
BInputAdapter* BuildInputAdapter();
protected:
friend class BInputAdapter;
virtual status_t SeekRequested(off_t position);
ssize_t BackWrite(const void* buffer, size_t size);
private:
status_t _EvaluateWait(off_t pos, off_t size);
int32 fFlags;
RelativePositionIO* fBuffer;
off_t fTotalSize;
bool fOpened;
sem_id fSeekSem;
BInputAdapter* fInputAdapter;
BAdapterIO(const BAdapterIO&);
BAdapterIO& operator=(const BAdapterIO&);
virtual void _ReservedAdapterIO1();
virtual void _ReservedAdapterIO2();
virtual void _ReservedAdapterIO3();
virtual void _ReservedAdapterIO4();
virtual void _ReservedAdapterIO5();
uint32 _reserved[5];
};
#endif
