tracktion_AudioFileManager.h

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 /*
    ,--.                     ,--.     ,--.  ,--.
  ,-'  '-.,--.--.,--,--.,---.|  |,-.,-'  '-.`--' ,---. ,--,--,      Copyright 2024
  '-.  .-'|  .--' ,-.  | .--'|     /'-.  .-',--.| .-. ||      \   Tracktion Software
    |  |  |  |  \ '-'  \ `--.|  \  \  |  |  |  |' '-' '|  ||  |       Corporation
    `---' `--'   `--`--'`---'`--'`--' `---' `--' `---' `--''--'    www.tracktion.com
 
    Tracktion Engine uses a GPL/commercial licence - see LICENCE.md for details.
*/
 
namespace tracktion { inline namespace engine
{
 
class TracktionThumbnailCache;
 
//==============================================================================
class AudioFileManager   : private juce::AsyncUpdater
{
public:
    AudioFileManager (Engine&);
    ~AudioFileManager();
 
    AudioFile getAudioFile (ProjectItemID);
    AudioFileInfo getInfo (const AudioFile&);
 
    void checkFileForChangesAsync (const AudioFile&);
    void checkFileForChanges (const AudioFile&);
    void checkFilesForChanges();
    void forceFileUpdate (const AudioFile&);
    void validateFile (const AudioFile&, bool updateInfo);
 
    void releaseFile (const AudioFile&);
    void releaseAllFiles();
 
    juce::AudioThumbnailCache& getAudioThumbnailCache()     { return *thumbnailCache; }
 
    Engine& engine;
    AudioProxyGenerator proxyGenerator;
    AudioFileCache cache;
 
private:
    struct KnownFile;
    std::unordered_map<HashCode, std::unique_ptr<KnownFile>> knownFiles;
    juce::CriticalSection knownFilesLock;
 
    KnownFile& findOrCreateKnown (const AudioFile&);
    void removeFile (HashCode);
    void clearFiles();
 
    juce::Array<AudioFile> filesToCheck;
 
    void handleAsyncUpdate();
    bool checkFileTime (KnownFile&);
    void callListeners (const AudioFile&);
    void callListenersOnMessageThread (const AudioFile&);
 
    friend class TracktionThumbnailCache;
    friend class SmartThumbnail;
    std::unique_ptr<juce::AudioThumbnailCache> thumbnailCache;
    std::set<size_t> thumbnailTypeHashes;
    std::unordered_map<const juce::AudioThumbnailBase*, SmartThumbnail*> thumbnailMap;
    juce::Array<SmartThumbnail*> activeThumbnails;
    juce::CriticalSection activeThumbnailLock;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioFileManager)
};
 
}} // namespace tracktion { inline namespace engine