Removed last trace of crypto from makefile

[proxmark3-svn] / client / graph.c

//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Graph utilities
//-----------------------------------------------------------------------------

#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include "ui.h"
#include "graph.h"
#include "lfdemod.h"

int GraphBuffer[MAX_GRAPH_TRACE_LEN];
int GraphTraceLen;

/* write a bit to the graph */
void AppendGraph(int redraw, int clock, int bit)
{
  int i;

  for (i = 0; i < (int)(clock / 2); ++i)
    GraphBuffer[GraphTraceLen++] = bit ^ 1;

  for (i = (int)(clock / 2); i < clock; ++i)
    GraphBuffer[GraphTraceLen++] = bit;

  if (redraw)
    RepaintGraphWindow();
}

// clear out our graph window
int ClearGraph(int redraw)
{
  int gtl = GraphTraceLen;
  memset(GraphBuffer, 0x00, GraphTraceLen);

  GraphTraceLen = 0;

  if (redraw)
    RepaintGraphWindow();

  return gtl;
}

// DETECT CLOCK NOW IN LFDEMOD.C

void setGraphBuf(uint8_t *buff, size_t size)
{
        if ( buff == NULL ) return;
        
        uint16_t i = 0;  
        if ( size > MAX_GRAPH_TRACE_LEN )
                size = MAX_GRAPH_TRACE_LEN;
  ClearGraph(0);
  for (; i < size; ++i){
                GraphBuffer[i]=buff[i]-128;
  }
  GraphTraceLen=size;
  RepaintGraphWindow();
  return;
}
size_t getFromGraphBuf(uint8_t *buff)
{
        if ( buff == NULL ) return 0;
        
  uint32_t i;
  for (i=0;i<GraphTraceLen;++i){
    if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
    if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
    buff[i]=(uint8_t)(GraphBuffer[i]+128);
  }
  return i;
}
// Get or auto-detect clock rate
int GetClock(const char *str, int peak, int verbose)
{
        int clock;
        sscanf(str, "%i", &clock);
        if (!strcmp(str, ""))
                clock = 0;

        // Auto-detect clock
        if (!clock)
        {
                uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
                size_t size = getFromGraphBuf(grph);
                if ( size == 0 ) {
                        PrintAndLog("Failed to copy from graphbuffer");
                        return -1;
                }
                clock = DetectASKClock(grph,size,0);
                // Only print this message if we're not looping something
                if (!verbose){
                        PrintAndLog("Auto-detected clock rate: %d", clock);
                }
        }
        return clock;
}

// A simple test to see if there is any data inside Graphbuffer. 
bool HasGraphData(){

        if ( GraphTraceLen <= 0) {
                PrintAndLog("No data available, try reading something first");
                return false;
        }
        return true;    
}

// Detect high and lows in Grapbuffer.
// Only loops the first 256 values. 
void DetectHighLowInGraph(int *high, int *low, bool addFuzz) {

        uint8_t loopMax = 255;
        if ( loopMax > GraphTraceLen)
                loopMax = GraphTraceLen;
  
        for (uint8_t i = 0; i < loopMax; ++i) {
                if (GraphBuffer[i] > *high)
                        *high = GraphBuffer[i];
                else if (GraphBuffer[i] < *low)
                        *low = GraphBuffer[i];
        }
        
        //12% fuzz in case highs and lows aren't clipped
        if (addFuzz) {
                *high = (int)(*high * .88);
                *low  = (int)(*low  * .88);
        }
}

int GetNRZpskClock(const char *str, int peak, int verbose)
{
        int clock;
        sscanf(str, "%i", &clock);
        if (!strcmp(str, ""))
                clock = 0;

        // Auto-detect clock
        if (!clock)
        {
                uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
                size_t size = getFromGraphBuf(grph);
                if ( size == 0 ) {
                        PrintAndLog("Failed to copy from graphbuffer");
                        return -1;
                }
                clock = DetectpskNRZClock(grph,size,0);
                // Only print this message if we're not looping something
                if (!verbose){
                        PrintAndLog("Auto-detected clock rate: %d", clock);
                }
        }
        return clock;
}