hvirtual/guicast/units.h

   1 #ifndef UNITS_H
   2 #define UNITS_H
   3
   4 #include "sizes.h"
   5
   6 #include <math.h>
   7 #include <stdint.h>
   8 #include <stdio.h>
   9
  10
  11 #define INFINITYGAIN -40
  12 #define MAXGAIN 50
  13 #define TOTALFREQS 1024
  14
  15 // h:mm:ss.sss
  16 #define TIME_HMS 0
  17 // h:mm:ss
  18 #define TIME_HMS2 6
  19 // hh:mm:ss
  20 #define TIME_HMS3 7
  21 // h:mm:ss:ff
  22 #define TIME_HMSF 1
  23 #define TIME_SAMPLES 2
  24 #define TIME_SAMPLES_HEX 3
  25 #define TIME_FRAMES 4
  26 // fffff-ff
  27 #define TIME_FEET_FRAMES 5
  28
  29
  30 class DB
  31 {
  32 public:
  33         DB(float infinitygain = INFINITYGAIN);
  34         virtual ~DB() {};
  35
  36 // return power of db using a table
  37         float fromdb_table();
  38         float fromdb_table(float db);
  39 // return power from db using log10
  40         float fromdb();
  41         static float fromdb(float db);
  42
  43 // convert db to power using a formula
  44         static float todb(float power);
  45
  46         inline DB& operator++() { if(db < MAXGAIN) db += 0.1; return *this; };
  47         inline DB& operator--() { if(db > INFINITYGAIN) db -= 0.1; return *this; };
  48         inline DB& operator=(DB &newdb) { db = newdb.db; return *this; };
  49         inline DB& operator=(int newdb) { db = newdb; return *this; };
  50         inline int operator==(DB &newdb) { return db == newdb.db; };
  51         inline int operator==(int newdb) { return db == newdb; };
  52
  53         static float *topower;
  54         float db;
  55         float infinitygain;
  56 };
  57
  58 // Third octave frequency table
  59 class Freq
  60 {
  61 public:
  62         Freq();
  63         Freq(const Freq& oldfreq);
  64         virtual ~Freq() {};
  65
  66         static void init_table();
  67
  68 // set freq to index given
  69         static int tofreq(int index);
  70
  71 // return index of frequency
  72         int fromfreq();
  73         static int fromfreq(int index);
  74
  75 // increment frequency by one
  76         Freq& operator++();
  77         Freq& operator--();
  78
  79         int operator>(Freq &newfreq);
  80         int operator<(Freq &newfreq);
  81         Freq& operator=(const Freq &newfreq);
  82         int operator=(const int newfreq);
  83         int operator!=(Freq &newfreq);
  84         int operator==(Freq &newfreq);
  85         int operator==(int newfreq);
  86
  87         static int *freqtable;
  88         int freq;
  89 };
  90
  91
  92 class Units
  93 {
  94 public:
  95         Units() {};
  96
  97         // No rounding.
  98         static float toframes(int64_t samples, int sample_rate, float framerate);
  99         // Round up if > .5
 100         static int64_t toframes_round(int64_t samples, int sample_rate, float framerate);
 101         static double fix_framerate(double value);
 102         static double atoframerate(char *text);
 103
 104
 105 // separator strings for BC_TextBox::set_separators
 106 // Returns 0 if the format has no separators.
 107         static char* format_to_separators(int time_format);
 108
 109         static int64_t tosamples(float frames, int sample_rate, float framerate);
 110         static char* totext(char *text,
 111                                 int64_t samples,
 112                                 int time_format,
 113                                 int samplerate,
 114                                 float frame_rate = 0,
 115                                 float frames_per_foot = 0);    // give text representation as time
 116         static char* totext(char *text,
 117                                 double seconds,
 118                                 int time_format,
 119                                 int sample_rate = 0,
 120                                 float frame_rate = 0,
 121                                 float frames_per_foot = 0);    // give text representation as time
 122         static int64_t fromtext(char *text,
 123                                 int samplerate,
 124                                 int time_format,
 125                                 float frame_rate,
 126                                 float frames_per_foot);    // convert time to samples
 127         static double text_to_seconds(char *text,
 128                                 int samplerate,
 129                                 int time_format,
 130                                 float frame_rate,
 131                                 float frames_per_foot);   // Convert text to seconds
 132
 133         static char* print_time_format(int time_format, char *string);
 134
 135         static float xy_to_polar(int x, int y);
 136         static void polar_to_xy(float angle, int radius, int &x, int &y);
 137
 138 // Numbers < 0 round down if next digit is < 5
 139 // Numbers > 0 round up if next digit is > 5
 140         static int64_t round(double result);
 141
 142 // Flooring type converter rounded to nearest .001
 143         static int64_t to_int64(double result);
 144
 145         static float quantize10(float value);
 146         static float quantize(float value, float precision);
 147
 148         static void* int64_to_ptr(uint64_t value);
 149         static uint64_t ptr_to_int64(void *ptr);
 150
 151 };
 152
 153 #endif