plugins/timestretch/timestretchengine.h

   1 #ifndef TIMESTRETCHENGINE_H
   2 #define TIMESTRETCHENGINE_H
   3
   4
   5 #include <stdint.h>
   6
   7
   8 class TimeStretchEngine
   9 {
  10 public:
  11 // scale = out length / in length
  12         TimeStretchEngine(double scale, int sample_rate);
  13         ~TimeStretchEngine();
  14
  15         void overlay(double *out, double *in, int size, int skirt);
  16 // Returns the number of samples in the output buffer
  17         int process(double *in_buffer, int in_size);
  18 // Return the output buffer
  19         double* get_samples();
  20 // Increment output buffer counters and shift output
  21         void read_output(double *buffer, int size);
  22
  23 private:
  24 // ms length of average window
  25         int window_time;
  26         int sample_rate;
  27         int window_size;
  28 // Queer eye for the straight buffer
  29         int window_skirt;
  30         double *output;
  31         int output_allocation;
  32         int output_size;
  33 // Sample at beginning of output buffer
  34         int64_t output_sample;
  35         double *input;
  36         int input_allocation;
  37         int input_size;
  38 // Sample at beginning of input buffer
  39         int64_t input_sample;
  40         double scale;
  41 };
  42
  43
  44
  45
  46
  47 #endif
  48
  49
  50