tracktion_AudioProxyGenerator.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 AudioProxyGenerator
{
public:
    AudioProxyGenerator();
    ~AudioProxyGenerator();
 
    void deleteProxy (const AudioFile& proxyFile);
 
    bool isProxyBeingGenerated (const AudioFile& proxyFile) const noexcept;
    float getProportionComplete (const AudioFile& proxyFile) const noexcept;
 
    //==============================================================================
    struct GeneratorJob  : public ThreadPoolJobWithProgress
    {
        GeneratorJob (const AudioFile& proxy);
        ~GeneratorJob() override;
 
        virtual bool render() = 0;
 
        float getCurrentTaskProgress() override         { return progress; }
 
        ThreadPoolJob::JobStatus runJob() override;
 
        using Ptr = juce::ReferenceCountedObjectPtr<GeneratorJob>;
 
        AudioFile proxy;
        std::atomic<float> progress { 0.0f };
 
    private:
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (GeneratorJob)
    };
 
    void beginJob (GeneratorJob*);
 
private:
    juce::Array<GeneratorJob*> activeJobs;
    juce::CriticalSection jobListLock;
 
    GeneratorJob* findJob (const AudioFile&) const noexcept;
    void removeFinishedJob (GeneratorJob*);
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioProxyGenerator)
};
 
}} // namespace tracktion { inline namespace engine