annotate vamp-support/DefaultPluginOutputIdMapper.h @ 185:3eb00e5c76c4

Pull step & block size out into framing struct, return in config

Update the C++ code to separate out the framing parameters (step and
block size) from the configuration structure into their own structure,
as in the latest schema, and to return the accepted framing params in
the configuration response.

This also implies that the plugin stub (which adapts Piper API
back to Vamp) makes a note of the returned values,
making them available via its own getPreferredStep/BlockSize
so that the host can retry the initialise call in the case where it
failed for having the wrong values first time.

/* -*- 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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    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

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    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    Except as contained in this notice, the names of the Centre for
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*/

#ifndef PIPER_DEFAULT_PLUGIN_ID_MAPPER_H
#define PIPER_DEFAULT_PLUGIN_ID_MAPPER_H

#include <vamp-hostsdk/Plugin.h>

namespace piper_vamp {

class DefaultPluginOutputIdMapper : public PluginOutputIdMapper
{
public:
    DefaultPluginOutputIdMapper(Vamp::Plugin *p) {
	Vamp::Plugin::OutputList outputs = p->getOutputDescriptors();
	for (const auto &d: outputs) {
	    m_ids.push_back(d.identifier);
	}
    }

    virtual int idToIndex(std::string outputId) const noexcept {
	int n = int(m_ids.size());
	for (int i = 0; i < n; ++i) {
	    if (outputId == m_ids[i]) {
		return i;
	    }
	}
	return -1;
    }

    virtual std::string indexToId(int index) const noexcept {
        if (index < 0 || size_t(index) >= m_ids.size()) return "";
	return m_ids[index];
    }

private:
    std::vector<std::string> m_ids;
};

}

#endif