DynamicRangeProcessorHistory.h

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  DynamicRangeProcessorHistory.h
 
  Matthieu Hodgkinson
 
**********************************************************************/
#pragma once
 
#include "DynamicRangeProcessorTypes.h"
#include <memory>
#include <optional>
#include <vector>
 
class DYNAMIC_RANGE_PROCESSOR_API DynamicRangeProcessorHistory final
{
public:
   DynamicRangeProcessorHistory(double sampleRate);
 
   struct Packet
   {
      float time = 0.f;
      float target = 0.f;
      float follower = 0.f;
      float input = 0.f;
      float output = 0.f;
   };
 
   static constexpr auto maxTimeSeconds = 2.5f;
 
   using Segment = std::vector<Packet>;
 
   void Push(const std::vector<DynamicRangeProcessorOutputPacket>& packets);
   void BeginNewSegment();
   const std::vector<Segment>& GetSegments() const;
   bool IsEmpty() const;
 
private:
   float GetPacketTime(const DynamicRangeProcessorOutputPacket& packet) const;
 
   const double mSampleRate;
   bool mBeginNewSegment = true;
   std::vector<Segment> mSegments;
   std::optional<long long> mFirstPacketFirstSampleIndex;
   std::optional<long long> mExpectedNextPacketFirstSampleIndex;
};
 
class DynamicRangeProcessorHistory;