client/graph.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Graph utilities
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include "ui.h"
  14 #include "graph.h"
  15 #include "lfdemod.h"
  16
  17 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
  18 int GraphTraceLen;
  19
  20 /* write a bit to the graph */
  21 void AppendGraph(int redraw, int clock, int bit)
  22 {
  23   int i;
  24
  25   for (i = 0; i < (int)(clock / 2); ++i)
  26     GraphBuffer[GraphTraceLen++] = bit ^ 1;
  27
  28   for (i = (int)(clock / 2); i < clock; ++i)
  29     GraphBuffer[GraphTraceLen++] = bit;
  30
  31   if (redraw)
  32     RepaintGraphWindow();
  33 }
  34
  35 // clear out our graph window
  36 int ClearGraph(int redraw)
  37 {
  38   int gtl = GraphTraceLen;
  39   memset(GraphBuffer, 0x00, GraphTraceLen);
  40
  41   GraphTraceLen = 0;
  42
  43   if (redraw)
  44     RepaintGraphWindow();
  45
  46   return gtl;
  47 }
  48
  49 // DETECT CLOCK NOW IN LFDEMOD.C
  50
  51 void setGraphBuf(uint8_t *buff, size_t size)
  52 {
  53   int i=0;
  54   ClearGraph(0);
  55   for (; i < size; ++i){
  56                 GraphBuffer[i]=buff[i]-128;
  57   }
  58   GraphTraceLen=size;
  59   RepaintGraphWindow();
  60   return;
  61 }
  62 size_t getFromGraphBuf(uint8_t *buff)
  63 {
  64   uint32_t i;
  65   for (i=0;i<GraphTraceLen;++i){
  66     if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
  67     if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
  68     buff[i]=(uint8_t)(GraphBuffer[i]+128);
  69   }
  70   return i;
  71 }
  72 // Get or auto-detect clock rate
  73 int GetClock(const char *str, int peak, int verbose)
  74 {
  75   int clock;
  76   sscanf(str, "%i", &clock);
  77   if (!strcmp(str, ""))
  78     clock = 0;
  79
  80         // Auto-detect clock
  81   if (!clock)
  82   {
  83     uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
  84                 size_t size = getFromGraphBuf(grph);
  85     clock = DetectASKClock(grph,size,0);
  86                 // Only print this message if we're not looping something
  87     if (!verbose){
  88       PrintAndLog("Auto-detected clock rate: %d", clock);
  89     }
  90   }
  91
  92   return clock;
  93 }
  94
  95 int GetNRZpskClock(const char *str, int peak, int verbose)
  96 {
  97         int clock;
  98         sscanf(str, "%i", &clock);
  99         if (!strcmp(str, ""))
 100                 clock = 0;
 101
 102         // Auto-detect clock
 103         if (!clock)
 104         {
 105                 uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
 106                 size_t size = getFromGraphBuf(grph);
 107                 clock = DetectpskNRZClock(grph,size,0);
 108                 // Only print this message if we're not looping something
 109                 if (!verbose){
 110                         PrintAndLog("Auto-detected clock rate: %d", clock);
 111                 }
 112         }
 113         return clock;
 114 }