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1 /*
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2
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3 * Vampy : This plugin is a wrapper around the Vamp plugin API.
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4 * It allows for writing Vamp plugins in Python.
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5
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6 * Centre for Digital Music, Queen Mary University of London.
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7 * Copyright (C) 2008-2009 Gyorgy Fazekas, QMUL. (See Vamp sources
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8 * for licence information.)
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9
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10 */
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11
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12 /*
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13 NOTES: There are two ways to implement the Vamp::Feature wrapper.
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14 1) We could keep a Vamp::Feature in the object and
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15 convert the values on the fly as they are inserted.
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16 However, this requires a way to convert back to Python for
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17 this object to be fully usable in python code. These conversions
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18 are otherwise unnecessary.
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19
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20 2) Keep the python attribute objects in a dict as it is normally
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21 done in python classes, and convert when the object is returned.
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22 This way the object is usable by the interpreter until it is returned
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23 to the C++ plugin wrapper.
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24 This is different form the Vampy:PyRealTime implementation where the
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25 two-way conversion makes more sense (in fact required). Note: For
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26 a host implementation option 1) will be required.
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27
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28 */
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29
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30 #ifndef _PYFEATURE_H_
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31 #define _PYFEATURE_H_
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32
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33 #include "vamp-sdk/Plugin.h"
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34 // #include "PyTypeInterface.h"
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35
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36
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37 typedef struct {
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38 PyObject_HEAD
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39 PyObject *dict;
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40 // Vamp::Plugin::Feature *feature;
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41 /// pointer to type interface required: PyTypeInterface ti;
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42 } FeatureObject;
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43
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44 extern PyTypeObject Feature_Type;
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45
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46 #define PyFeature_CheckExact(v) ((v)->ob_type == &Feature_Type)
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47 #define PyFeature_Check(v) PyObject_TypeCheck(v, &Feature_Type)
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48
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49 ///fast macro version as per API convention
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50 #define PyFeature_AS_DICT(v) ((const FeatureObject* const) (v))->dict
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51 // #define PyFeature_AS_FEATURE(v) ((const FeatureObject* const) (v))->feature
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52
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53
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54 /* PyFeature C++ API */
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55
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56 /* Not required here:
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57 we will never have to pass a feature back from the wrapper */
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58 // PyAPI_FUNC(PyObject *)
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59 // PyFeature_FromFeature(Vamp::Plugin::Feature&);
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60
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61 // PyAPI_FUNC(const Vamp::Plugin::Feature*)
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62 // PyFeature_AsFeature (PyObject *self);
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63
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64
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65
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66 #endif
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