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annotate PyPlugin.cpp @ 101:28d22109991c

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Text tweaks
author Chris Cannam <cannam@all-day-breakfast.com>
date Fri, 01 Feb 2019 18:07:02 +0000
parents f92587bedb2c
children
rev   line source
fazekasgy@37 1 /*
fazekasgy@37 2
fazekasgy@37 3 * Vampy : This plugin is a wrapper around the Vamp plugin API.
fazekasgy@37 4 * It allows for writing Vamp plugins in Python.
fazekasgy@37 5
fazekasgy@37 6 * Centre for Digital Music, Queen Mary University of London.
fazekasgy@37 7 * Copyright (C) 2008-2009 Gyorgy Fazekas, QMUL. (See Vamp sources
fazekasgy@37 8 * for licence information.)
fazekasgy@37 9
fazekasgy@37 10 */
fazekasgy@37 11
fazekasgy@37 12 #include <Python.h>
fazekasgy@37 13 #include "PyPlugin.h"
fazekasgy@37 14 #include "PyTypeInterface.h"
fazekasgy@37 15 #include <stdlib.h>
fazekasgy@37 16 #include "PyExtensionModule.h"
Chris@67 17 #include "Debug.h"
fazekasgy@37 18
fazekasgy@37 19 #ifdef _WIN32
fazekasgy@37 20 #define PATHSEP ('\\')
fazekasgy@37 21 #else
fazekasgy@37 22 #define PATHSEP ('/')
fazekasgy@37 23 #endif
fazekasgy@37 24
fazekasgy@37 25 using std::string;
fazekasgy@37 26 using std::vector;
fazekasgy@37 27 using std::cerr;
fazekasgy@37 28 using std::endl;
fazekasgy@37 29 using std::map;
fazekasgy@37 30
fazekasgy@37 31 Mutex PyPlugin::m_pythonInterpreterMutex;
fazekasgy@37 32
fazekasgy@51 33 PyPlugin::PyPlugin(std::string pluginKey, float inputSampleRate, PyObject *pyClass, int &instcount, bool &numpyInstalled) :
fazekasgy@37 34 Plugin(inputSampleRate),
fazekasgy@37 35 m_pyClass(pyClass),
fazekasgy@37 36 m_instcount(instcount),
fazekasgy@37 37 m_stepSize(0),
fazekasgy@37 38 m_blockSize(0),
fazekasgy@37 39 m_channels(0),
fazekasgy@37 40 m_plugin(pluginKey),
fazekasgy@37 41 m_class(pluginKey.substr(pluginKey.rfind(':')+1,pluginKey.size()-1)),
fazekasgy@37 42 m_path((pluginKey.substr(0,pluginKey.rfind(PATHSEP)))),
fazekasgy@37 43 m_processType(not_implemented),
fazekasgy@37 44 m_pyProcess(NULL),
fazekasgy@37 45 m_inputDomain(TimeDomain),
fazekasgy@37 46 m_quitOnErrorFlag(false),
fazekasgy@51 47 m_debugFlag(false),
fazekasgy@51 48 m_numpyInstalled(numpyInstalled),
fazekasgy@51 49 m_processFailure(false)
fazekasgy@37 50 {
fazekasgy@37 51 m_ti.setInputSampleRate(inputSampleRate);
fazekasgy@37 52 MutexLocker locker(&m_pythonInterpreterMutex);
Chris@67 53 DSTREAM << "Creating instance " << m_instcount << " of " << pluginKey << endl;
fazekasgy@37 54
fazekasgy@37 55 // Create an instance
fazekasgy@37 56 Py_INCREF(m_pyClass);
fazekasgy@37 57 PyObject *pyInputSampleRate = PyFloat_FromDouble(inputSampleRate);
fazekasgy@37 58 PyObject *args = PyTuple_Pack(1, pyInputSampleRate);
fazekasgy@37 59 m_pyInstance = PyObject_Call(m_pyClass, args, NULL);
fazekasgy@37 60
fazekasgy@37 61 if (!m_pyInstance || PyErr_Occurred()) {
fazekasgy@37 62 if (PyErr_Occurred()) { PyErr_Print(); PyErr_Clear(); }
fazekasgy@37 63 Py_DECREF(m_pyClass);
fazekasgy@37 64 Py_CLEAR(args);
fazekasgy@37 65 Py_CLEAR(pyInputSampleRate);
fazekasgy@37 66 cerr << "PyPlugin::PyPlugin: Failed to create Python plugin instance for key \""
Chris@89 67 << pluginKey << "\" (is the 1-arg class constructor from sample rate correctly provided?)" << endl;
fazekasgy@37 68 throw std::string("Constructor failed");
fazekasgy@37 69 }
Chris@89 70
fazekasgy@37 71 Py_INCREF(m_pyInstance);
fazekasgy@37 72 Py_DECREF(args);
fazekasgy@37 73 Py_DECREF(pyInputSampleRate);
fazekasgy@37 74
fazekasgy@37 75 m_instcount++;
fazekasgy@37 76
fazekasgy@37 77 // query and decode vampy flags
fazekasgy@37 78 m_vampyFlags = getBinaryFlags("vampy_flags",vf_NULL);
fazekasgy@37 79
fazekasgy@37 80 m_debugFlag = (bool) (m_vampyFlags & vf_DEBUG);
fazekasgy@37 81 m_quitOnErrorFlag = (bool) (m_vampyFlags & vf_QUIT);
fazekasgy@37 82 bool st_flag = (bool) (m_vampyFlags & vf_STRICT);
fazekasgy@37 83 m_useRealTimeFlag = (bool) (m_vampyFlags & vf_REALTIME);
fazekasgy@37 84
fazekasgy@37 85 if (m_debugFlag) cerr << "Debug messages ON for Vampy plugin: " << m_class << endl;
Chris@67 86 else DSTREAM << "Debug messages OFF for Vampy plugin: " << m_class << endl;
fazekasgy@37 87
fazekasgy@37 88 if (m_debugFlag && m_quitOnErrorFlag) cerr << "Quit on type error ON for: " << m_class << endl;
fazekasgy@37 89
fazekasgy@37 90 if (m_debugFlag && st_flag) cerr << "Strict type conversion ON for: " << m_class << endl;
fazekasgy@37 91 m_ti.setStrictTypingFlag(st_flag);
fazekasgy@51 92 m_ti.setNumpyInstalled(m_numpyInstalled);
fazekasgy@37 93
fazekasgy@37 94 }
fazekasgy@37 95
fazekasgy@37 96 PyPlugin::~PyPlugin()
fazekasgy@37 97 {
fazekasgy@37 98 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 99 m_instcount--;
fazekasgy@37 100 // cerr << "Deleting plugin instance. Count: " << m_instcount << endl;
fazekasgy@37 101
fazekasgy@37 102 if (m_pyInstance) Py_DECREF(m_pyInstance);
fazekasgy@37 103 //we increase the class refcount before creating an instance
fazekasgy@37 104 if (m_pyClass) Py_DECREF(m_pyClass);
fazekasgy@37 105 if (m_pyProcess) Py_CLEAR(m_pyProcess);
fazekasgy@37 106
Chris@67 107 DSTREAM << "PyPlugin::PyPlugin:" << m_class << " instance " << m_instcount << " deleted." << endl;
fazekasgy@37 108 }
fazekasgy@37 109
fazekasgy@37 110 string
fazekasgy@37 111 PyPlugin::getIdentifier() const
fazekasgy@37 112 {
fazekasgy@37 113 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 114 string rString="vampy-xxx";
fazekasgy@37 115 if (!m_debugFlag) return genericMethodCall("getIdentifier",rString);
fazekasgy@37 116
fazekasgy@37 117 rString = genericMethodCall("getIdentifier",rString);
fazekasgy@37 118 if (rString == "vampy-xxx")
fazekasgy@37 119 cerr << "Warning: Plugin must return a unique identifier." << endl;
fazekasgy@37 120 return rString;
fazekasgy@37 121 }
fazekasgy@37 122
fazekasgy@37 123 string
fazekasgy@37 124 PyPlugin::getName() const
fazekasgy@37 125 {
fazekasgy@37 126 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 127 string rString="VamPy Plugin (Noname)";
fazekasgy@37 128 return genericMethodCall("getName",rString);
fazekasgy@37 129 }
fazekasgy@37 130
fazekasgy@37 131 string
fazekasgy@37 132 PyPlugin::getDescription() const
fazekasgy@37 133 {
fazekasgy@37 134 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 135 string rString="Not given. (Hint: Implement getDescription method.)";
fazekasgy@37 136 return genericMethodCall("getDescription",rString);
fazekasgy@37 137 }
fazekasgy@37 138
fazekasgy@37 139
fazekasgy@37 140 string
fazekasgy@37 141 PyPlugin::getMaker() const
fazekasgy@37 142 {
fazekasgy@37 143 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 144 string rString="VamPy Plugin.";
fazekasgy@37 145 return genericMethodCall("getMaker",rString);
fazekasgy@37 146 }
fazekasgy@37 147
fazekasgy@37 148 int
fazekasgy@37 149 PyPlugin::getPluginVersion() const
fazekasgy@37 150 {
fazekasgy@37 151 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 152 size_t rValue=2;
fazekasgy@37 153 return genericMethodCall("getPluginVersion",rValue);
fazekasgy@37 154 }
fazekasgy@37 155
fazekasgy@37 156 string
fazekasgy@37 157 PyPlugin::getCopyright() const
fazekasgy@37 158 {
fazekasgy@37 159 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 160 string rString="Licence information not available.";
fazekasgy@37 161 return genericMethodCall("getCopyright",rString);
fazekasgy@37 162 }
fazekasgy@37 163
fazekasgy@37 164
fazekasgy@37 165 bool
fazekasgy@37 166 PyPlugin::initialise(size_t channels, size_t stepSize, size_t blockSize)
fazekasgy@37 167 {
fazekasgy@37 168
fazekasgy@37 169 if (channels < getMinChannelCount() ||
fazekasgy@37 170 channels > getMaxChannelCount()) return false;
fazekasgy@37 171
fazekasgy@37 172 m_inputDomain = getInputDomain();
fazekasgy@37 173
fazekasgy@37 174 //Note: placing Mutex before the calls above causes deadlock !!
fazekasgy@37 175 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 176
fazekasgy@37 177 m_stepSize = stepSize;
fazekasgy@37 178 m_blockSize = blockSize;
fazekasgy@37 179 m_channels = channels;
fazekasgy@37 180
fazekasgy@37 181 //query the process implementation type
fazekasgy@37 182 //two optional flags can be used: 'use_numpy_interface' or 'use_legacy_interface'
fazekasgy@37 183 //if they are not provided, we fall back to the original method
fazekasgy@37 184 setProcessType();
fazekasgy@37 185
fazekasgy@37 186 return genericMethodCallArgs<bool>("initialise",channels,stepSize,blockSize);
fazekasgy@37 187 }
fazekasgy@37 188
fazekasgy@37 189 void
fazekasgy@37 190 PyPlugin::reset()
fazekasgy@37 191 {
fazekasgy@37 192 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@51 193 m_processFailure = false;
fazekasgy@37 194 genericMethodCall("reset");
fazekasgy@37 195 }
fazekasgy@37 196
fazekasgy@37 197 PyPlugin::InputDomain
fazekasgy@37 198 PyPlugin::getInputDomain() const
fazekasgy@37 199 {
fazekasgy@37 200 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 201 return genericMethodCall("getInputDomain",m_inputDomain);
fazekasgy@37 202 }
fazekasgy@37 203
fazekasgy@37 204 size_t
fazekasgy@37 205 PyPlugin::getPreferredBlockSize() const
fazekasgy@37 206 {
fazekasgy@37 207 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 208 size_t rValue = 0;
fazekasgy@37 209 return genericMethodCall("getPreferredBlockSize",rValue);
fazekasgy@37 210 }
fazekasgy@37 211
fazekasgy@37 212 size_t
fazekasgy@37 213 PyPlugin::getPreferredStepSize() const
fazekasgy@37 214 {
fazekasgy@37 215 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 216 size_t rValue = 0;
fazekasgy@37 217 return genericMethodCall("getPreferredStepSize",rValue);
fazekasgy@37 218 }
fazekasgy@37 219
fazekasgy@37 220 size_t
fazekasgy@37 221 PyPlugin::getMinChannelCount() const
fazekasgy@37 222 {
fazekasgy@37 223 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 224 size_t rValue = 1;
fazekasgy@37 225 return genericMethodCall("getMinChannelCount",rValue);
fazekasgy@37 226 }
fazekasgy@37 227
fazekasgy@37 228 size_t
fazekasgy@37 229 PyPlugin::getMaxChannelCount() const
fazekasgy@37 230 {
fazekasgy@37 231 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 232 size_t rValue = 1;
fazekasgy@37 233 return genericMethodCall("getMaxChannelCount",rValue);
fazekasgy@37 234 }
fazekasgy@37 235
fazekasgy@37 236 PyPlugin::OutputList
fazekasgy@37 237 PyPlugin::getOutputDescriptors() const
fazekasgy@37 238 {
fazekasgy@37 239 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 240 OutputList list;
fazekasgy@37 241 return genericMethodCall("getOutputDescriptors",list);
fazekasgy@37 242 }
fazekasgy@37 243
fazekasgy@37 244 PyPlugin::ParameterList
fazekasgy@37 245 PyPlugin::getParameterDescriptors() const
fazekasgy@37 246 {
fazekasgy@37 247 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 248 ParameterList list;
fazekasgy@37 249 #ifdef _DEBUG
fazekasgy@37 250 ///Note: This function is often called first by the host.
fazekasgy@37 251 if (!m_pyInstance) {cerr << "Error: pyInstance is NULL" << endl; return list;}
fazekasgy@37 252 #endif
fazekasgy@37 253
fazekasgy@37 254 return genericMethodCall("getParameterDescriptors",list);
fazekasgy@37 255 }
fazekasgy@37 256
fazekasgy@37 257 void PyPlugin::setParameter(std::string paramid, float newval)
fazekasgy@37 258 {
fazekasgy@37 259 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 260 genericMethodCallArgs<NoneType>("setParameter",paramid,newval);
fazekasgy@37 261 }
fazekasgy@37 262
fazekasgy@37 263 float PyPlugin::getParameter(std::string paramid) const
fazekasgy@37 264 {
fazekasgy@37 265 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 266 return genericMethodCallArgs<float>("getParameter",paramid);
fazekasgy@37 267 }
fazekasgy@37 268
fazekasgy@37 269 #ifdef _DEBUG_VALUES
fazekasgy@37 270 static int proccounter = 0;
fazekasgy@37 271 #endif
fazekasgy@37 272
fazekasgy@37 273 PyPlugin::FeatureSet
fazekasgy@37 274 PyPlugin::process(const float *const *inputBuffers,Vamp::RealTime timestamp)
fazekasgy@37 275 {
fazekasgy@37 276 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@37 277
fazekasgy@37 278 #ifdef _DEBUG_VALUES
fazekasgy@37 279 /// we only need this if we'd like to see what frame a set of values belong to
fazekasgy@37 280 cerr << "[Vampy::call] process, frame:" << proccounter << endl;
fazekasgy@37 281 proccounter++;
fazekasgy@37 282 #endif
fazekasgy@37 283
fazekasgy@37 284 if (m_blockSize == 0 || m_channels == 0) {
fazekasgy@37 285 cerr << "ERROR: PyPlugin::process: "
fazekasgy@37 286 << "Plugin has not been initialised" << endl;
fazekasgy@37 287 return FeatureSet();
fazekasgy@37 288 }
fazekasgy@37 289
fazekasgy@37 290 if (m_processType == not_implemented) {
fazekasgy@37 291 cerr << "ERROR: In Python plugin [" << m_class
fazekasgy@37 292 << "] No process implementation found. Returning empty feature set." << endl;
fazekasgy@37 293 return FeatureSet();
fazekasgy@37 294 }
fazekasgy@37 295
fazekasgy@51 296 if (m_processFailure) return FeatureSet();
fazekasgy@51 297
fazekasgy@37 298 return processMethodCall(inputBuffers,timestamp);
fazekasgy@37 299
fazekasgy@37 300 }
fazekasgy@37 301
fazekasgy@37 302 PyPlugin::FeatureSet
fazekasgy@37 303 PyPlugin::getRemainingFeatures()
fazekasgy@37 304 {
fazekasgy@37 305 MutexLocker locker(&m_pythonInterpreterMutex);
fazekasgy@51 306 if (m_processFailure) return FeatureSet();
fazekasgy@37 307 FeatureSet rValue;
fazekasgy@37 308 return genericMethodCall("getRemainingFeatures",rValue);
fazekasgy@37 309 }
fazekasgy@37 310
fazekasgy@37 311 bool
Chris@66 312 PyPlugin::getBooleanFlag(const char flagName[], bool defValue = false) const
fazekasgy@37 313 {
fazekasgy@37 314 bool rValue = defValue;
fazekasgy@37 315 if (PyObject_HasAttrString(m_pyInstance,flagName))
fazekasgy@37 316 {
fazekasgy@37 317 PyObject *pyValue = PyObject_GetAttrString(m_pyInstance,flagName);
fazekasgy@37 318 if (!pyValue)
fazekasgy@37 319 {
fazekasgy@37 320 if (PyErr_Occurred()) {PyErr_Print(); PyErr_Clear();}
fazekasgy@37 321 } else {
fazekasgy@37 322 rValue = m_ti.PyValue_To_Bool(pyValue);
fazekasgy@37 323 if (m_ti.error) {
fazekasgy@37 324 Py_CLEAR(pyValue);
fazekasgy@37 325 typeErrorHandler(flagName);
fazekasgy@37 326 rValue = defValue;
fazekasgy@37 327 } else Py_DECREF(pyValue);
fazekasgy@37 328 }
fazekasgy@37 329 }
fazekasgy@37 330 if (m_debugFlag) cerr << FLAG_VALUE << endl;
fazekasgy@37 331 return rValue;
fazekasgy@37 332 }
fazekasgy@37 333
fazekasgy@37 334 int
Chris@66 335 PyPlugin::getBinaryFlags(const char flagName[], eVampyFlags defValue = vf_NULL) const
fazekasgy@37 336 {
fazekasgy@37 337 int rValue = defValue;
fazekasgy@37 338 if (PyObject_HasAttrString(m_pyInstance,flagName))
fazekasgy@37 339 {
fazekasgy@37 340 PyObject *pyValue = PyObject_GetAttrString(m_pyInstance,flagName);
fazekasgy@37 341 if (!pyValue)
fazekasgy@37 342 {
fazekasgy@37 343 if (PyErr_Occurred()) {PyErr_Print(); PyErr_Clear();}
fazekasgy@37 344 } else {
fazekasgy@37 345 rValue |= (int) m_ti.PyValue_To_Size_t(pyValue);
fazekasgy@37 346 if (m_ti.error) {
fazekasgy@37 347 Py_CLEAR(pyValue);
fazekasgy@37 348 typeErrorHandler(flagName);
fazekasgy@37 349 rValue = defValue;
fazekasgy@37 350 } else Py_DECREF(pyValue);
fazekasgy@37 351 }
fazekasgy@37 352 }
fazekasgy@37 353 if (m_debugFlag) cerr << FLAG_VALUE << endl;
fazekasgy@37 354 return rValue;
fazekasgy@37 355 }
fazekasgy@37 356
fazekasgy@37 357
fazekasgy@37 358 void
fazekasgy@37 359 PyPlugin::setProcessType()
fazekasgy@37 360 {
fazekasgy@37 361 //quering process implementation type
fazekasgy@37 362 char legacyMethod[]="process";
fazekasgy@37 363 char numpyMethod[]="processN";
fazekasgy@51 364 m_processFailure = false;
fazekasgy@37 365
fazekasgy@37 366 if (PyObject_HasAttrString(m_pyInstance,legacyMethod) &&
fazekasgy@37 367 m_processType == 0)
fazekasgy@37 368 {
fazekasgy@37 369 m_processType = legacyProcess;
fazekasgy@37 370 m_pyProcess = PyString_FromString(legacyMethod);
fazekasgy@37 371 m_pyProcessCallable = PyObject_GetAttr(m_pyInstance,m_pyProcess);
fazekasgy@37 372 }
fazekasgy@37 373
fazekasgy@37 374 if (PyObject_HasAttrString(m_pyInstance,numpyMethod) &&
fazekasgy@37 375 m_processType == 0)
fazekasgy@37 376 {
fazekasgy@37 377 m_processType = numpy_bufferProcess;
fazekasgy@37 378 m_pyProcess = PyString_FromString(numpyMethod);
fazekasgy@37 379 m_pyProcessCallable = PyObject_GetAttr(m_pyInstance,m_pyProcess);
fazekasgy@37 380 }
fazekasgy@37 381
fazekasgy@37 382 // These flags are optional. If provided, they override the
fazekasgy@37 383 // implementation type making the use of the odd processN()
fazekasgy@37 384 // function redundant.
fazekasgy@37 385 // However, the code above provides backward compatibility.
fazekasgy@37 386
fazekasgy@37 387 if (m_vampyFlags & vf_BUFFER) {
fazekasgy@37 388 m_processType = numpy_bufferProcess;
fazekasgy@37 389 if (m_debugFlag) cerr << "Process using (numpy) buffer interface." << endl;
fazekasgy@37 390 }
fazekasgy@37 391
fazekasgy@37 392 if (m_vampyFlags & vf_ARRAY) {
fazekasgy@37 393 #ifdef HAVE_NUMPY
fazekasgy@51 394 if (m_numpyInstalled) { m_processType = numpy_arrayProcess;
fazekasgy@51 395 if (m_debugFlag)
fazekasgy@51 396 cerr << "Process using numpy array interface." << endl;
fazekasgy@51 397 }
fazekasgy@51 398 else {
fazekasgy@51 399 m_processFailure = true;
fazekasgy@51 400 char method[]="initialise::setProcessType";
fazekasgy@51 401 cerr << PLUGIN_ERROR
fazekasgy@51 402 << "This plugin requests the Numpy array interface by setting "
fazekasgy@51 403 << " the vf_ARRAY flag in its __init__() function." << endl
fazekasgy@51 404 << "However, we could not found a version of Numpy compatible with this build of Vampy." << endl
fazekasgy@51 405 << "If you have a numerical library installed that supports the buffer interface, " << endl
fazekasgy@51 406 << "you can request this interface instead by setting the vf_BUFFER flag." << endl;
fazekasgy@51 407 }
fazekasgy@37 408 #else
fazekasgy@51 409 m_processFailure = true;
fazekasgy@51 410 char method[]="initialise::setProcessType";
fazekasgy@51 411 cerr << PLUGIN_ERROR
fazekasgy@51 412 << "Error: This version of vampy was compiled without numpy support, "
fazekasgy@51 413 << "however the vf_ARRAY flag is set for plugin: " << m_class << endl
fazekasgy@51 414 << "The default behaviour is: passing a python list of samples for each channel in process() "
fazekasgy@51 415 << "or a list of memory buffers in processN(). " << endl
fazekasgy@51 416 << "This can be used create numpy arrays using the numpy.frombuffer() command." << endl;
fazekasgy@37 417 #endif
fazekasgy@37 418 }
fazekasgy@37 419
fazekasgy@51 420 if (!m_pyProcessCallable)
fazekasgy@37 421 {
fazekasgy@37 422 m_processType = not_implemented;
fazekasgy@37 423 m_pyProcess = NULL;
fazekasgy@37 424 char method[]="initialise::setProcessType";
fazekasgy@37 425 cerr << PLUGIN_ERROR << " No process implementation found. Plugin will do nothing." << endl;
fazekasgy@51 426 m_processFailure = true;
fazekasgy@37 427 }
fazekasgy@37 428 }
fazekasgy@37 429
fazekasgy@37 430 void
Chris@66 431 PyPlugin::typeErrorHandler(const char *method, bool process) const
fazekasgy@37 432 {
fazekasgy@37 433 bool strict = false;
fazekasgy@37 434 while (m_ti.error) {
fazekasgy@37 435 PyTypeInterface::ValueError e = m_ti.getError();
fazekasgy@51 436 #ifdef HAVE_NUMPY
fazekasgy@51 437 // disable the process completely if numpy types are returned
fazekasgy@51 438 // but a compatible version was not loaded.
fazekasgy@51 439 // This is required because if an object is returned from
fazekasgy@51 440 // the wrong build, malloc complains about its size
fazekasgy@51 441 // (i.e. the interpreter doesn't free it properly)
fazekasgy@51 442 // and the process may be leaking.
fazekasgy@51 443 // Note: this only happens in the obscure situation when
fazekasgy@51 444 // someone forces to return wrong numpy types from an
fazekasgy@51 445 // incompatible version using the buffer interface.
fazekasgy@51 446 // In this case the incampatible library is still usable,
fazekasgy@51 447 // but manual conversion to python builtins is required.
fazekasgy@51 448 // If the ARRAY interface is set but Numpy is not installed
fazekasgy@51 449 // the process will be disabled already at initialisation.
fazekasgy@51 450 if (process && !m_numpyInstalled && e.str().find("numpy")!=std::string::npos)
fazekasgy@51 451 {
fazekasgy@51 452 m_processFailure = true;
fazekasgy@51 453 cerr << "Warning: incompatible numpy type encountered. Disabling process." << endl;
fazekasgy@51 454 }
fazekasgy@51 455 #endif
fazekasgy@37 456 cerr << PLUGIN_ERROR << e.str() << endl;
fazekasgy@37 457 if (e.strict) strict = true;
fazekasgy@37 458 // e.print();
fazekasgy@37 459 }
fazekasgy@37 460 /// quit on hard errors like accessing NULL pointers or strict type conversion
fazekasgy@37 461 /// errors IF the user sets the quitOnErrorFlag in the plugin.
fazekasgy@37 462 /// Otherwise most errors will go unnoticed apart from
fazekasgy@37 463 /// a messages in the terminal.
fazekasgy@37 464 /// It would be best if hosts could catch an exception instead
fazekasgy@37 465 /// and display something meaningful to the user.
fazekasgy@37 466 if (strict && m_quitOnErrorFlag) exit(EXIT_FAILURE);
fazekasgy@51 467
fazekasgy@51 468 // this would disable all outputs even if some are valid
fazekasgy@51 469 // if (process) m_processFailure = true;
fazekasgy@51 470
fazekasgy@37 471 }
fazekasgy@37 472