sound/pxt.h

   1
   2 #ifndef _PXT_H
   3 #define _PXT_H
   4
   5 #include "../common/basics.h"
   6
   7 #define PXT_NO_CHANNELS                 4
   8
   9 enum
  10 {
  11         MOD_SINE,
  12         MOD_TRI,
  13         MOD_SAWUP,
  14         MOD_SAWDOWN,
  15         MOD_SQUARE,
  16         MOD_NOISE,
  17         MOD_WHITE,
  18         MOD_PULSE,
  19
  20         PXT_NO_MODELS
  21 };
  22
  23 typedef struct
  24 {
  25         signed char *model;             // ptr to model data
  26         uchar model_no;                 // index of model data (0-5, which wave[] model points to)
  27
  28         double phaseacc;
  29         double phaseinc;
  30         double repeat;                  // pixtone calls it "freq"
  31         uchar volume;                   // pixtone calls it "top"
  32         uchar offset;
  33
  34         int white_ptr;                  // like "phaseacc" but for MOD_WHITE (the odd one out)
  35 } stPXWave;
  36
  37 #define PXENV_NUM_VERTICES              3
  38 typedef struct
  39 {
  40         int initial;
  41
  42         int time[PXENV_NUM_VERTICES];
  43         int val[PXENV_NUM_VERTICES];
  44 } stPXEnvelope;
  45
  46 typedef struct
  47 {
  48         int size_blocks;
  49         char enabled;
  50
  51         stPXWave main;
  52         stPXWave pitch;
  53         stPXWave pitch2;
  54         stPXWave volume;
  55         stPXEnvelope envelope;
  56
  57         unsigned char envbuffer[256];
  58         signed char *buffer;
  59 } stPXChannel;
  60
  61 typedef struct
  62 {
  63         stPXChannel chan[PXT_NO_CHANNELS];
  64
  65         signed char *final_buffer;
  66         int final_size;
  67 } stPXSound;
  68
  69 #endif
  70