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_SECONDS 8
  23 #define TIME_HMSF 1
  24 #define TIME_SAMPLES 2
  25 #define TIME_SAMPLES_HEX 3
  26 #define TIME_FRAMES 4
  27 // fffff-ff
  28 #define TIME_FEET_FRAMES 5
  29 #define TIME_SECONDS__STR      "ssss.sss"
  30 #define TIME_HMS__STR          "h:mm:ss.sss"
  31 #define TIME_HMS2__STR         "h:mm:ss"
  32 #define TIME_HMS3__STR         "hh:mm:ss"
  33 #define TIME_HMSF__STR         "h:mm:ss:ff"
  34 #define TIME_SAMPLES__STR      "audio samples"
  35 #define TIME_SAMPLES_HEX__STR  "audio samples (hex)"
  36 #define TIME_FRAMES__STR       "video frames"
  37 #define TIME_FEET_FRAMES__STR  "video frames (feet)"
  38
  39 class DB
  40 {
  41 public:
  42         DB(float infinitygain = INFINITYGAIN);
  43         virtual ~DB() {};
  44
  45 // return power of db using a table
  46         float fromdb_table();
  47         float fromdb_table(float db);
  48 // return power from db using log10
  49         float fromdb();
  50         static float fromdb(float db);
  51
  52 // convert db to power using a formula
  53         static float todb(float power);
  54
  55         inline DB& operator++() { if(db < MAXGAIN) db += 0.1; return *this; };
  56         inline DB& operator--() { if(db > INFINITYGAIN) db -= 0.1; return *this; };
  57         inline DB& operator=(DB &newdb) { db = newdb.db; return *this; };
  58         inline DB& operator=(int newdb) { db = newdb; return *this; };
  59         inline int operator==(DB &newdb) { return db == newdb.db; };
  60         inline int operator==(int newdb) { return db == newdb; };
  61
  62         static float *topower;
  63         float db;
  64         float infinitygain;
  65  private:
  66         static float *allocated;
  67 };
  68
  69 // Third octave frequency table
  70 class Freq
  71 {
  72 public:
  73         Freq();
  74         Freq(const Freq& oldfreq);
  75         virtual ~Freq() {};
  76
  77         static void init_table();
  78
  79 // set freq to index given
  80         static int tofreq(int index);
  81
  82 // return index of frequency
  83         int fromfreq();
  84         static int fromfreq(int index);
  85
  86 // increment frequency by one
  87         Freq& operator++();
  88         Freq& operator--();
  89
  90         int operator>(Freq &newfreq);
  91         int operator<(Freq &newfreq);
  92         Freq& operator=(const Freq &newfreq);
  93         int operator=(const int newfreq);
  94         int operator!=(Freq &newfreq);
  95         int operator==(Freq &newfreq);
  96         int operator==(int newfreq);
  97
  98         static int *freqtable;
  99         int freq;
 100 };
 101
 102
 103 class Units
 104 {
 105 public:
 106         Units() {};
 107
 108         static int timeformat_totype(char *tcf);
 109
 110 // No rounding.
 111         static float toframes(int64_t samples, int sample_rate, float framerate);
 112 // Round up if > .5
 113         static int64_t toframes_round(int64_t samples, int sample_rate, float framerate);
 114         static double fix_framerate(double value);
 115         static double atoframerate(char *text);
 116
 117
 118 // Punctuate with commas
 119         static void punctuate(char *string);
 120
 121
 122 // separator strings for BC_TextBox::set_separators
 123 // Returns 0 if the format has no separators.
 124         static char* format_to_separators(int time_format);
 125
 126         static int64_t tosamples(float frames, int sample_rate, float framerate);
 127 // give text representation as time
 128         static char* totext(char *text,
 129                                 int64_t samples,
 130                                 int time_format,
 131                                 int samplerate,
 132                                 float frame_rate = 0,
 133                                 float frames_per_foot = 0);
 134 // give text representation as time
 135         static char* totext(char *text,
 136                                 double seconds,
 137                                 int time_format,
 138                                 int sample_rate = 0,
 139                                 float frame_rate = 0,
 140                                 float frames_per_foot = 0);
 141 // convert time to samples
 142         static int64_t fromtext(char *text,
 143                                 int samplerate,
 144                                 int time_format,
 145                                 float frame_rate,
 146                                 float frames_per_foot);
 147 // Convert text to seconds
 148         static double text_to_seconds(char *text,
 149                                 int samplerate,
 150                                 int time_format,
 151                                 float frame_rate,
 152                                 float frames_per_foot);
 153
 154         static char* print_time_format(int time_format, char *string);
 155
 156         static float xy_to_polar(int x, int y);
 157         static void polar_to_xy(float angle, int radius, int &x, int &y);
 158
 159 // Numbers < 0 round down if next digit is < 5
 160 // Numbers > 0 round up if next digit is > 5
 161         static int64_t round(double result);
 162
 163 // Flooring type converter rounded to nearest .001
 164         static int64_t to_int64(double result);
 165
 166         static float quantize10(float value);
 167         static float quantize(float value, float precision);
 168
 169         static void* int64_to_ptr(uint64_t value);
 170         static uint64_t ptr_to_int64(void *ptr);
 171
 172 // Comparisons between double seem to work more often when this is called
 173 // on the comparison values.
 174         static void fix_double(double *x);
 175 };
 176
 177 #endif