MusicInformationRetrieval.h

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  MusicInformationRetrieval.h
 
  Matthieu Hodgkinson
 
**********************************************************************/
#pragma once
 
#include "AcidizerTags.h"
#include "MirTypes.h"
 
#include <functional>
#include <optional>
#include <string>
#include <unordered_map>
#include <vector>
 
namespace MIR
{
class MirAudioReader;
class ProjectInterface;
 
struct LoopClassifierSettings
{
   const double allowedFalsePositiveRate;
 
   const double threshold;
};
 
static const std::unordered_map<FalsePositiveTolerance, LoopClassifierSettings>
   loopClassifierSettings {
      { FalsePositiveTolerance::Strict, { .04, 0.8679721717368254 } },
      { FalsePositiveTolerance::Lenient, { .1, 0.7129778875046098 } },
   };
 
struct ProjectSyncInfoInput
{
   const MirAudioReader& source;
   std::string filename;
   std::optional<LibFileFormats::AcidizerTags> tags;
   std::function<void(double progress)> progressCallback;
   double projectTempo = 120.;
   bool projectWasEmpty = false;
   bool viewIsBeatsAndMeasures = false;
};
 
std::optional<ProjectSyncInfo> MUSIC_INFORMATION_RETRIEVAL_API
GetProjectSyncInfo(const ProjectSyncInfoInput& input);
 
// Used internally by `MusicInformation`, made public for testing.
MUSIC_INFORMATION_RETRIEVAL_API std::optional<double>
GetBpmFromFilename(const std::string& filename);
 
MUSIC_INFORMATION_RETRIEVAL_API std::optional<MusicalMeter>
GetMusicalMeterFromSignal(
   const MirAudioReader& source, FalsePositiveTolerance tolerance,
   const std::function<void(double)>& progressCallback,
   QuantizationFitDebugOutput* debugOutput = nullptr);
 
MUSIC_INFORMATION_RETRIEVAL_API void SynchronizeProject(
   const std::vector<std::shared_ptr<AnalyzedAudioClip>>& clips,
   ProjectInterface& project, bool projectWasEmpty);
 
} // namespace MIR