feedback.cpp

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#include "feedback.h"
 
#include "processor_router.h"
 
namespace vital {
 
  void Feedback::process(int num_samples) {
    VITAL_ASSERT(inputMatchesBufferSize());
 
    const poly_float* audio_in = input(0)->source->buffer;
    for (int i = 0; i < num_samples; ++i) {
      buffer_[buffer_index_] = audio_in[i];
      buffer_index_ = (buffer_index_ + 1) % kMaxBufferSize;
    }
  }
 
  void Feedback::refreshOutput(int num_samples) {
    poly_float* audio_out = output(0)->buffer;
    int index = (kMaxBufferSize + buffer_index_ - num_samples) % kMaxBufferSize;
    for (int i = 0; i < num_samples; ++i) {
      audio_out[i] = buffer_[index];
      index = (index + 1) % kMaxBufferSize;
    }
  }
} // namespace vital