80 lines
3.2 KiB
C++
80 lines
3.2 KiB
C++
/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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/*
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File: QTSSStream.h
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Contains: Abstract base class containing the prototypes for generalized
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stream functions.
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Any server object that wants to act as a QTSS_StreamRef should
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derive off of this and implement one or more of the stream APIs.
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*/
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#ifndef __QTSS_STREAM_H__
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#define __QTSS_STREAM_H__
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#include "QTSS.h"
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#include "Task.h"
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class QTSSStream
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{
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public:
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QTSSStream() : fTask(NULL) {}
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virtual ~QTSSStream() {}
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//
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// A stream can have a task associated with it. If this stream supports
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// async I/O, the task is needed to know what to wakeup when there is an event
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void SetTask(Task* inTask) { fTask = inTask; }
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Task* GetTask() { return fTask; }
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virtual QTSS_Error Read(void* /*ioBuffer*/, UInt32 /*inLen*/, UInt32* /*outLen*/)
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{ return QTSS_Unimplemented; }
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virtual QTSS_Error Write(void* /*inBuffer*/, UInt32 /*inLen*/, UInt32* /*outLenWritten*/, UInt32 /*inFlags*/)
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{ return QTSS_Unimplemented; }
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virtual QTSS_Error WriteV(iovec* /*inVec*/, UInt32 /*inNumVectors*/, UInt32 /*inTotalLength*/, UInt32* /*outLenWritten*/)
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{ return QTSS_Unimplemented; }
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virtual QTSS_Error Flush() { return QTSS_Unimplemented; }
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virtual QTSS_Error Seek(UInt64 /*inNewPosition*/) { return QTSS_Unimplemented; }
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virtual QTSS_Error Advise(UInt64 /*inPosition*/, UInt32 /*inAdviseSize*/)
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{ return QTSS_Unimplemented; }
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virtual QTSS_Error RequestEvent(QTSS_EventType /*inEventMask*/)
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{ return QTSS_Unimplemented; }
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private:
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Task* fTask;
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};
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#endif //__QTSS_STREAM_H__
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