126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
//==========================================================================;
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (c) 1992 - 1996 Microsoft Corporation. All Rights Reserved.
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//
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//==========================================================================;
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#ifndef __XBAR_H
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#define __XBAR_H
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#include "capmain.h"
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#include "mediums.h"
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struct _XBAR_PIN_DESCRIPTION {
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ULONG PinType;
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ULONG RelatedPinIndex;
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ULONG IsRoutedTo; // Index of input pin in use
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KSPIN_MEDIUM Medium;
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_XBAR_PIN_DESCRIPTION(ULONG type, ULONG rel, const KSPIN_MEDIUM * PinMedium);
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_XBAR_PIN_DESCRIPTION(){}
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};
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inline _XBAR_PIN_DESCRIPTION::_XBAR_PIN_DESCRIPTION(ULONG type, ULONG rel , const KSPIN_MEDIUM * PinMedium) :
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PinType(type), RelatedPinIndex(rel), IsRoutedTo(0) // , Medium(PinMedium)
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{
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Medium = *PinMedium;
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}
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const NUMBER_OF_XBAR_OUTPUTS = 1;
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const NUMBER_OF_XBAR_INPUTS = 3;
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class CrossBar
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{
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friend class Device;
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_XBAR_PIN_DESCRIPTION OutputPins [NUMBER_OF_XBAR_OUTPUTS];
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_XBAR_PIN_DESCRIPTION InputPins [NUMBER_OF_XBAR_INPUTS];
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public:
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int GetNoInputs();
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int GetNoOutputs();
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void * operator new(size_t size, void * pAllocation) { return(pAllocation);}
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void operator delete(void * pAllocation) {}
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BOOL TestRoute(int InPin, int OutPin);
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ULONG GetPinInfo(int dir, int idx, ULONG &related);
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KSPIN_MEDIUM * GetPinMedium(int dir, int idx);
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void Route(int OutPin, int InPin);
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BOOL GoodPins(int InPin, int OutPin);
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int GetRoute(int OutPin);
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CrossBar();
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};
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inline CrossBar::CrossBar()
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{
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OutputPins [0] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_VideoDecoder, 1 , &CrossbarMediums[3]);
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// InputPins are set in device.cpp
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}
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inline int CrossBar::GetNoInputs()
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{
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return NUMBER_OF_XBAR_INPUTS;
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}
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inline int CrossBar::GetNoOutputs()
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{
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return NUMBER_OF_XBAR_OUTPUTS;
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}
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inline BOOL CrossBar::GoodPins(int InPin, int OutPin)
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{
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return BOOL(InPin < NUMBER_OF_XBAR_INPUTS && OutPin < NUMBER_OF_XBAR_OUTPUTS);
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}
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inline void CrossBar::Route(int OutPin, int InPin)
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{
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OutputPins [OutPin].IsRoutedTo = InPin;
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}
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inline int CrossBar::GetRoute(int OutPin)
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{
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return OutputPins [OutPin].IsRoutedTo;
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}
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inline KSPIN_MEDIUM * CrossBar::GetPinMedium(int dir, int idx)
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{
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_XBAR_PIN_DESCRIPTION *pPinDesc;
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if (dir == KSPIN_DATAFLOW_IN) {
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pPinDesc = InputPins;
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ASSERT(idx < NUMBER_OF_XBAR_INPUTS);
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} else {
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pPinDesc = OutputPins;
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ASSERT(idx < NUMBER_OF_XBAR_OUTPUTS);
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}
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return &pPinDesc [idx].Medium;
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}
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inline ULONG CrossBar::GetPinInfo(int dir, int idx, ULONG &related)
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{
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_XBAR_PIN_DESCRIPTION *pPinDesc;
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if (dir == KSPIN_DATAFLOW_IN) {
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pPinDesc = InputPins;
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ASSERT(idx < NUMBER_OF_XBAR_INPUTS);
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} else {
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pPinDesc = OutputPins;
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ASSERT(idx < NUMBER_OF_XBAR_OUTPUTS);
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}
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related = pPinDesc [idx].RelatedPinIndex;
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return pPinDesc [idx].PinType;
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}
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#endif
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