annotate vamp-support/AssignedPluginHandleMapper.h @ 95:b6ac26b72b59

Implement list, use request-response classes in loader

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

/*
    Piper C++

    Centre for Digital Music, Queen Mary, University of London.
    Copyright 2006-2016 Chris Cannam and QMUL.
  
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*/

#ifndef PIPER_ASSIGNED_PLUGIN_HANDLE_MAPPER_H
#define PIPER_ASSIGNED_PLUGIN_HANDLE_MAPPER_H

#include "PluginHandleMapper.h"
#include "PluginOutputIdMapper.h"
#include "DefaultPluginOutputIdMapper.h"

#include <set>
#include <map>
#include <iostream>

namespace piper {

class AssignedPluginHandleMapper : public PluginHandleMapper
{
public:
    AssignedPluginHandleMapper() { }

    void addPlugin(Handle h, Vamp::Plugin *p) {
        if (!p) return;
	if (m_rplugins.find(p) == m_rplugins.end()) {
            if (m_plugins.find(h) != m_plugins.end()) {
                std::cerr << "ERROR: Duplicate plugin handle " << h
                          << " for plugin " << p << " (already used for plugin "
                          << m_plugins[h] << ")" << std::endl;
                throw std::logic_error("Duplicate plugin handle");
            }
	    m_plugins[h] = p;
	    m_rplugins[p] = h;
            m_outputMappers[h] =
                std::make_shared<DefaultPluginOutputIdMapper>(p);
	}
    }

    void removePlugin(Handle h) {
	if (m_plugins.find(h) == m_plugins.end()) return;
	Vamp::Plugin *p = m_plugins[h];
        m_outputMappers.erase(h);
	m_plugins.erase(h);
	if (isConfigured(h)) {
	    m_configuredPlugins.erase(h);
	    m_channelCounts.erase(h);
	}
	m_rplugins.erase(p);
    }

    bool havePlugin(Vamp::Plugin *p) {
        return (m_rplugins.find(p) != m_rplugins.end());
    }
    
    Handle pluginToHandle(Vamp::Plugin *p) const noexcept {
	if (m_rplugins.find(p) == m_rplugins.end()) {
            return INVALID_HANDLE;
	}
	return m_rplugins.at(p);
    }
    
    Vamp::Plugin *handleToPlugin(Handle h) const noexcept {
	if (m_plugins.find(h) == m_plugins.end()) {
            return nullptr;
	}
	return m_plugins.at(h);
    }

    const std::shared_ptr<PluginOutputIdMapper> pluginToOutputIdMapper
    (Vamp::Plugin *p) const noexcept {
        return handleToOutputIdMapper(pluginToHandle(p));
    }

    const std::shared_ptr<PluginOutputIdMapper> handleToOutputIdMapper
    (Handle h) const noexcept {
	if (h != INVALID_HANDLE &&
            m_outputMappers.find(h) != m_outputMappers.end()) {
            return m_outputMappers.at(h);
        } else {
	    return {};
	}
    }

    bool isConfigured(Handle h) const noexcept {
        if (h == INVALID_HANDLE) return false;
	return m_configuredPlugins.find(h) != m_configuredPlugins.end();
    }

    void markConfigured(Handle h, int channelCount, int blockSize) {
        if (h == INVALID_HANDLE) return;
	m_configuredPlugins.insert(h);
	m_channelCounts[h] = channelCount;
	m_blockSizes[h] = blockSize;
    }

    int getChannelCount(Handle h) const noexcept {
	if (m_channelCounts.find(h) == m_channelCounts.end()) {
	    return 0;
	}
	return m_channelCounts.at(h);
    }

    int getBlockSize(Handle h) const noexcept {
	if (m_blockSizes.find(h) == m_blockSizes.end()) {
            return 0;
	}
	return m_blockSizes.at(h);
    }
    
private:
    std::map<Handle, Vamp::Plugin *> m_plugins;
    std::map<Vamp::Plugin *, Handle> m_rplugins;
    std::set<Handle> m_configuredPlugins;
    std::map<Handle, int> m_channelCounts;
    std::map<Handle, int> m_blockSizes;
    std::map<Handle, std::shared_ptr<PluginOutputIdMapper>> m_outputMappers;
};

}

#endif