annotate bits/CountingPluginHandleMapper.h @ 64:85ec33975434

Support split OutputDescriptor, and plugins rather than pluginData in listResponse from SDK

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

/*
    Vampipe

    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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    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be
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*/

#ifndef VAMPIPE_COUNTING_PLUGIN_HANDLE_MAPPER_H
#define VAMPIPE_COUNTING_PLUGIN_HANDLE_MAPPER_H

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

#include <set>
#include <map>

namespace vampipe {

//!!! NB not thread-safe at present, should it be?
class CountingPluginHandleMapper : public PluginHandleMapper
{
public:
    CountingPluginHandleMapper() : m_nextHandle(1) { }

    void addPlugin(Vamp::Plugin *p) {
	if (m_rplugins.find(p) == m_rplugins.end()) {
	    Handle h = m_nextHandle++;
	    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()) {
	    throw NotFound();
	}
	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);
    }
    
    Handle pluginToHandle(Vamp::Plugin *p) const {
	if (m_rplugins.find(p) == m_rplugins.end()) {
	    throw NotFound();
	}
	return m_rplugins.at(p);
    }
    
    Vamp::Plugin *handleToPlugin(Handle h) const {
	if (m_plugins.find(h) == m_plugins.end()) {
	    throw NotFound();
	}
	return m_plugins.at(h);
    }

    const std::shared_ptr<PluginOutputIdMapper> pluginToOutputIdMapper
    (Vamp::Plugin *p) const {
        // pluginToHandle checks the plugin has been registered with us
        return m_outputMappers.at(pluginToHandle(p));
    }

    const std::shared_ptr<PluginOutputIdMapper> handleToOutputIdMapper
    (Handle h) const {
	if (m_plugins.find(h) == m_plugins.end()) {
	    throw NotFound();
	}
        return m_outputMappers.at(h);
    }

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

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

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

    int getBlockSize(Handle h) const {
	if (m_blockSizes.find(h) == m_blockSizes.end()) {
	    throw NotFound();
	}
	return m_blockSizes.at(h);
    }
    
private:
    Handle m_nextHandle; // NB plugin handle type must fit in JSON number
    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