annotate vamp-client/AutoPlugin.h @ 148:c3b9a584b42b

Implement timeouts

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
/*
  Piper C++

  An API for audio analysis and feature extraction plugins.

  Centre for Digital Music, Queen Mary, University of London.
  Copyright 2006-2016 Chris Cannam and QMUL.
  
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  obtaining a copy of this software and associated documentation
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*/

#ifndef PIPER_AUTO_PLUGIN_H
#define PIPER_AUTO_PLUGIN_H

#include "ProcessQtTransport.h"
#include "CapnpRRClient.h"

#include <cstdint>

namespace piper_vamp {
namespace client {

class AutoPlugin : public Vamp::Plugin
{
public:
    AutoPlugin(std::string serverName,
               std::string pluginKey,
               float inputSampleRate,
               int adapterFlags,
               LogCallback *logger) : // logger may be nullptr for cerr
        Vamp::Plugin(inputSampleRate),
        m_logger(logger),
        m_transport(serverName, "capnp", logger),
        m_client(&m_transport, logger)
    {
        LoadRequest req;
        req.pluginKey = pluginKey;
        req.inputSampleRate = inputSampleRate;
        req.adapterFlags = adapterFlags;
        try {
            LoadResponse resp = m_client.loadPlugin(req);
            m_plugin = resp.plugin;
        } catch (ServerCrashed c) {
            log(std::string("AutoPlugin: Server crashed: ") + c.what());
            m_plugin = 0;
        }
    }

    virtual ~AutoPlugin() {
        delete m_plugin;
    }

    bool isOK() const {
        return (m_plugin != nullptr);
    }
    
    virtual std::string getIdentifier() const {
        return getPlugin()->getIdentifier();
    }

    virtual std::string getName() const {
        return getPlugin()->getName();
    }

    virtual std::string getDescription() const {
        return getPlugin()->getDescription();
    }

    virtual std::string getMaker() const {
        return getPlugin()->getMaker();
    }

    virtual std::string getCopyright() const {
        return getPlugin()->getCopyright();
    }

    virtual int getPluginVersion() const {
        return getPlugin()->getPluginVersion();
    }

    virtual ParameterList getParameterDescriptors() const {
        return getPlugin()->getParameterDescriptors();
    }

    virtual float getParameter(std::string name) const {
        return getPlugin()->getParameter(name);
    }

    virtual void setParameter(std::string name, float value) {
        getPlugin()->setParameter(name, value);
    }

    virtual ProgramList getPrograms() const {
        return getPlugin()->getPrograms();
    }

    virtual std::string getCurrentProgram() const {
        return getPlugin()->getCurrentProgram();
    }
    
    virtual void selectProgram(std::string program) {
        getPlugin()->selectProgram(program);
    }

    virtual bool initialise(size_t inputChannels,
                            size_t stepSize,
                            size_t blockSize) {
        return getPlugin()->initialise(inputChannels, stepSize, blockSize);
    }

    virtual void reset() {
        getPlugin()->reset();
    }

    virtual InputDomain getInputDomain() const {
        return getPlugin()->getInputDomain();
    }

    virtual size_t getPreferredBlockSize() const {
        return getPlugin()->getPreferredBlockSize();
    }

    virtual size_t getPreferredStepSize() const {
        return getPlugin()->getPreferredStepSize();
    }

    virtual size_t getMinChannelCount() const {
        return getPlugin()->getMinChannelCount();
    }

    virtual size_t getMaxChannelCount() const {
        return getPlugin()->getMaxChannelCount();
    }

    virtual OutputList getOutputDescriptors() const {
        return getPlugin()->getOutputDescriptors();
    }

    virtual FeatureSet process(const float *const *inputBuffers,
                               Vamp::RealTime timestamp) {
        return getPlugin()->process(inputBuffers, timestamp);
    }

    virtual FeatureSet getRemainingFeatures() {
        return getPlugin()->getRemainingFeatures();
    }

private:
    LogCallback *m_logger;
    ProcessQtTransport m_transport;
    CapnpRRClient m_client;
    Vamp::Plugin *m_plugin;
    Vamp::Plugin *getPlugin() const {
        if (!m_plugin) {
            log("AutoPlugin: getPlugin() failed (caller should have called AutoPlugin::isOK)");
            throw std::logic_error("Plugin load failed");
        }
        return m_plugin;
    }

    void log(std::string message) const {
        if (m_logger) m_logger->log(message);
        else std::cerr << message << std::endl;
    }
};

}
}

#endif