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368 lines
8.6 KiB
368 lines
8.6 KiB
/***************************************************************************
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* Copyright (C) 2005 by David Saxton *
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* david@bluehaze.org *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#ifndef OSCILLOSCOPEDATA_H
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#define OSCILLOSCOPEDATA_H
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#include <tqcolor.h>
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#include <tqobject.h>
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typedef long long llong;
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typedef unsigned long long ullong;
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typedef unsigned int uint;
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#define DATA_CHUNK_SIZE (8192/sizeof(T))
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#define DATA_CHUNK_ARRAY_SIZE ((8192-sizeof(uint))/sizeof(DataChunk<T>*))
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// Allow a minimum of 64 megabytes of stored data (67108864 bytes)
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/// \todo The maximum allowed amount of stored data should be configurable or
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/// more intelligent (e.g. taking into account the number of probes or the
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/// amount of physical memory on the system).
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#define DCARRAY_ARRAY_SIZE ((67108864/(8192*DATA_CHUNK_ARRAY_SIZE))+1)
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/**
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For use in LogicProbe: Every time the input changes state, the new input state
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is recorded in value, along with the simulator time that it occurs at.
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*/
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class LogicDataPoint
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{
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public:
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LogicDataPoint()
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{
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value = 0;
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time = 0;
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}
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LogicDataPoint( bool v, ullong t )
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{
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value = v;
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time = t;
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}
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bool value : 1;
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ullong time : 63;
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};
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template <typename T>
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class DataChunk
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{
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public:
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DataChunk() { memset( data, 0, DATA_CHUNK_SIZE*sizeof(T) ); }
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T data[ DATA_CHUNK_SIZE ];
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private:
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// We don't want to accidently copy a shedload of data
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DataChunk( const DataChunk & );
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};
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typedef DataChunk<LogicDataPoint> LogicChunk;
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typedef DataChunk<float> FloatingChunk;
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template <typename T>
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class DCArray
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{
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public:
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DCArray()
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{
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memset( m_data, 0, DATA_CHUNK_ARRAY_SIZE*sizeof(DataChunk<T> *) );
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m_allocatedUpTo = 0;
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}
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~DCArray()
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{
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for ( uint i=0; i<m_allocatedUpTo; ++i)
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delete m_data[i];
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}
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inline DataChunk<T> * chunk( uint i )
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{
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if ( i >= m_allocatedUpTo )
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allocateUpTo(i+1024);
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if ( i >= DATA_CHUNK_ARRAY_SIZE )
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return 0l;
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return m_data[i];
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}
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uint allocatedUpTo() const { return m_allocatedUpTo; }
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protected:
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void allocateUpTo( uint upTo )
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{
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if ( upTo > DATA_CHUNK_ARRAY_SIZE )
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upTo = DATA_CHUNK_ARRAY_SIZE;
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for ( uint i=m_allocatedUpTo; i<upTo; ++i )
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m_data[i] = new DataChunk<T>;
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m_allocatedUpTo = upTo;
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}
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DataChunk<T> * m_data[DATA_CHUNK_ARRAY_SIZE];
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uint m_allocatedUpTo;
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private:
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// We don't want to accidently copy a shedload of data
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DCArray( const DCArray & );
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};
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template <typename T>
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class StoredData
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{
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public:
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StoredData()
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{
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memset( m_data, 0, DCARRAY_ARRAY_SIZE*sizeof(DCArray<T> *) );
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m_allocatedUpTo = 0;
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}
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~StoredData()
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{
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reset();
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}
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inline T & operator[]( ullong i )
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{
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return dataAt(i);
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}
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inline T & dataAt( ullong i, ullong * insertPos = 0 )
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{
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ullong c = i % DATA_CHUNK_SIZE;
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ullong b = ullong((i-c)/DATA_CHUNK_SIZE) % DATA_CHUNK_ARRAY_SIZE;
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ullong a = ullong((ullong((i-c)/DATA_CHUNK_SIZE)-b)/DATA_CHUNK_ARRAY_SIZE);
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if ( a >= m_allocatedUpTo )
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allocateUpTo(a+1);
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if ( a >= DCARRAY_ARRAY_SIZE )
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{
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a = DCARRAY_ARRAY_SIZE - 1;
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if ( insertPos )
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*insertPos = toPos( a, b, c );
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}
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return m_data[a]->chunk(b)->data[c];
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}
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ullong toPos( ullong a, ullong b, ullong c ) const
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{
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return (((a*DATA_CHUNK_ARRAY_SIZE)+b)*DATA_CHUNK_SIZE)+c;
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}
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uint allocatedUpTo() const { return m_allocatedUpTo; }
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DCArray<T> * dcArray( unsigned pos ) const
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{
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return (pos < m_allocatedUpTo) ? m_data[pos] : 0l;
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}
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/**
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* Initialises all data to 0
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*/
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void reset()
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{
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for ( uint i=0; i<m_allocatedUpTo; ++i)
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delete m_data[i];
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m_allocatedUpTo = 0;
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}
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protected:
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void allocateUpTo( uint upTo )
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{
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if ( upTo >= DCARRAY_ARRAY_SIZE )
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{
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// Shuffle all data (getting rid of the oldest data)
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delete m_data[0];
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for ( unsigned i = 1; i < m_allocatedUpTo; ++i )
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m_data[i-1] = m_data[i];
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upTo = DCARRAY_ARRAY_SIZE;
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m_allocatedUpTo--;
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}
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for ( unsigned i = m_allocatedUpTo; i < upTo; ++i )
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m_data[i] = new DCArray<T>;
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m_allocatedUpTo = upTo;
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}
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DCArray<T> * m_data[DCARRAY_ARRAY_SIZE];
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uint m_allocatedUpTo;
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private:
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// We don't want to accidently copy a shedload of data
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StoredData( const StoredData<T> & );
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};
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/**
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@author David Saxton
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*/
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class ProbeData : public TQObject
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{
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TQ_OBJECT
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public:
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ProbeData( int id );
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~ProbeData();
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/**
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* @returns unique id for oscilloscope, set on construction
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*/
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int id() const { return m_id; }
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/**
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* Set the proportion (0 = top, 1 = bottom) of the way down the
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* oscilloscope view that the probe output is drawn. If the proportion
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* is out of range ( <0, or >1), then the drawPosition is set to 0/1
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*/
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void setDrawPosition( float drawPosition ) { m_drawPosition = drawPosition; }
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/**
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* Returns the draw position. Default is 0.5.
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* @see setDrawPosition
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*/
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float drawPosition() const { return m_drawPosition; }
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/**
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* Set the colour that is used to display the probe in the oscilloscope.
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* Default is black.
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*/
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void setColor( TQColor color );
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/**
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* @returns the colour that is used to display the probe in the oscilloscope
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*/
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TQColor color() const { return m_color; }
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// /**
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// * Will not record any data when paused
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// */
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// void setPaused( bool isPaused ) { b_isPaused = isPaused; }
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/**
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* Returns the time (in Simulator time) that this probe was created at,
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* or last reset.
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*/
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ullong resetTime() const { return m_resetTime; }
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/**
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* Erases all recorded data, and sets m_resetTime to the current
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* simulator time.
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*/
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virtual void eraseData() = 0;
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/**
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* Searches for and returns the position of the last DataPoint that was
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* added before or at the given Simulator time. If no DataPoints were
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* were recorded before the given time, then will return the one closest
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* to the given time. Will return 0 if no DataPoints have been recorded
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* yet.
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*/
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virtual ullong findPos( llong time ) const = 0;
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ullong insertPos() const { return m_insertPos; }
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signals:
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/**
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* Emitted when an attribute that affects how the probe is drawn in the
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* oscilloscope is changed.
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*/
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void displayAttributeChanged();
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protected:
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const int m_id;
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float m_drawPosition;
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ullong m_insertPos;
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// bool b_isPaused;
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ullong m_resetTime;
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TQColor m_color;
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};
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/**
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@author David Saxton
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*/
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class LogicProbeData : public ProbeData
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{
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public:
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LogicProbeData( int id );
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/**
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* Appends the data point to the set of data.
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*/
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void addDataPoint( LogicDataPoint data )
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{
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ullong next = m_insertPos++;
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m_data.dataAt( next, & m_insertPos ) = data;
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}
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virtual void eraseData();
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virtual ullong findPos( llong time ) const;
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protected:
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StoredData<LogicDataPoint> m_data;
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friend class OscilloscopeView;
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};
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/**
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@author David Saxton
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*/
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class FloatingProbeData : public ProbeData
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{
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public:
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enum Scaling { Linear, Logarithmic };
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FloatingProbeData( int id );
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/**
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* Appends the data point to the set of data.
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*/
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void addDataPoint( float data ) { m_data[m_insertPos++] = data; }
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/**
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* Converts the insert position to a Simulator time.
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*/
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ullong toTime( ullong at ) const;
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/**
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* Sets the scaling to use in the oscilloscope display.
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*/
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void setScaling( Scaling scaling );
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/**
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* @return the scaling used for the oscilloscope display.
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*/
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Scaling scaling() const { return m_scaling; }
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/**
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* Sets the value to use as the upper absolute value in the display.
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*/
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void setUpperAbsValue( double upperAbsValue );
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/**
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* @return the upper absolute value to use in the display.
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*/
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double upperAbsValue() const { return m_upperAbsValue; }
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/**
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* Sets the value to use as the lower absolute value in the display
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* (this is only used with logarithmic scaling).
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*/
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void setLowerAbsValue( double lowerAbsValue );
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/**
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* @return the lower absolute value to use in the display (this is
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* only used with logarithmic scaling).
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*/
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double lowerAbsValue() const { return m_lowerAbsValue; }
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virtual void eraseData();
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virtual ullong findPos( llong time ) const;
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protected:
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Scaling m_scaling;
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double m_upperAbsValue;
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double m_lowerAbsValue;
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StoredData<float> m_data;
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friend class OscilloscopeView;
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};
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#endif
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