sample.h

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//
// Copyright (c) 2023, DefenceX PTY LTD
//
// This file is part of the VivoeX project developed by DefenceX.
//
// Licensed under the Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
// License. See the LICENSE file in the project root for full license details.
//
 
#ifndef HMICORE_HARDWARE_SAMPLE_H_
#define HMICORE_HARDWARE_SAMPLE_H_
 
#include <sndfile.h>
 
#include <string_view>
#include <vector>
 
namespace gva {
 
class AudioSampleBase {
 public:
  virtual ~AudioSampleBase() = default;
 
  virtual int32_t ReadBytes(uint8_t* buffer, const uint32_t bytes) = 0;
 
  virtual int32_t GetChannels() const = 0;
 
  virtual void Seek(uint32_t bytes) = 0;
 
  virtual int32_t GetSamplingRate() const = 0;
};
 
class AudioSample : public AudioSampleBase {
 public:
  struct CallbackData {
    SNDFILE* file;
    SF_INFO info;
  };
 
  explicit AudioSample(const std::string_view filename);
 
  int32_t ReadBytes(uint8_t* buffer, const uint32_t bytes) final;
 
  int32_t GetChannels() const final;
 
  int32_t GetSamplingRate() const final;
 
  void Seek(uint32_t bytes) final;
 
 private:
  uint32_t total_ = 0;
  uint32_t seek_ = 0;
  CallbackData fileinfo_;
  std::vector<float> data_;
};
 
}  // namespace gva
 
#endif  // HMICORE_HARDWARE_SAMPLE_H_