r8b_stretcher.hpp

#pragma once
#include <ossia/detail/config.hpp>
 
#include <ossia/dataflow/graph_node.hpp>
#include <ossia/dataflow/nodes/media.hpp>
#include <ossia/dataflow/token_request.hpp>
 
#if __has_include(<CDSPResampler.h>)
#include <CDSPResampler.h>
 
#include <r8bbase.cpp>
#else
#include <r8brain-free-src/CDSPResampler.h>
#endif
namespace ossia
{
 
struct r8b_stretcher
{
  //  void run_repitch_r8b(
  //      const ossia::token_request& t,
  //      ossia::exec_state_facade e,
  //      const std::size_t chan,
  //      const std::size_t len,
  //      const int64_t samples_to_read,
  //      const int64_t samples_to_write,
  //      ossia::audio_port& ap) noexcept
  //  {
  //    // speed == 0.5 -> 2 times more samples
  //
  //    double target_rate = this->m_fileSampleRate / t.speed;
  //
  //    std::vector<std::unique_ptr<r8b::CDSPResampler24>> resamplers;
  //    std::vector<std::pair<double*, int>> lastResampled;
  //    for (std::size_t i = 0; i < channels(); ++i)
  //    {
  //      /* Create the resampler objects. */
  //      ap.channel(i).resize(t.offset.impl + samples_to_write);
  //
  //      if(resamplers.size() < channels())
  //      {
  //        lastResampled.push_back({});
  //        resamplers.emplace_back(std::make_unique<r8b::CDSPResampler24>(this->m_fileSampleRate,
  //        target_rate, std::max(int64_t(16384), samples_to_read)));
  //
  //      }
  //      double* input = const_cast<double*>(&m_data[i][t.prev_date]);
  //      double* output = nullptr;
  //      int res = resamplers[i]->process(input, samples_to_read, output);
  //
  //      std::cerr << "read: " << samples_to_read
  //                << " ; write: " << samples_to_write
  //                << " ; rate: " << target_rate
  //                << " ; res: " << res
  //                << std::endl;
  //      for(int j = 0; j < samples_to_write; j++)
  //      {
  //        ap.channel(i)[j + t.offset] = output[j];
  //      }
  //      do_fade(
  //          t.start_discontinuous, t.end_discontinuous, ap.channel(i),
  //          t.offset.impl, samples_to_write);
  //    }
  //  }
};
}