def processFile(self,engine,filename):
"""
Extract features from the given file using the given engine.
If an output format has been set, then output files will be written, else
output feature data can be read using engine's :py:meth:`Engine.readOutput`
or :py:meth:`Engine.readAllOutputs` methods.
:param engine: engine to use for feature extraction. It must already have been configured.
:type engine: :py:class:`Engine`
:param filename: audio file to process
:type filename: string
:return: 0 on success, negative value on fail
"""
if not AudioFileProcessor._YAAFE_IO_LOADED:
AudioFileProcessor._YAAFE_IO_LOADED = (loadComponentLibrary('yaafe-io')==0)
return yc.audiofileprocessor_processFile(self.ptr,engine.ptr,filename)
def __new__(mcs, name, base, kdict):
# check class attributes
if not 'PARAMS' in kdict:
kdict['PARAMS'] = []
if not 'TRANSFORM' in kdict:
kdict['TRANSFORM'] = False
# load component libraries
if 'COMPONENT_LIBS' in kdict:
for lib in kdict['COMPONENT_LIBS']:
if yaafecore.loadComponentLibrary(lib) != 0:
return
# compute exposed parameters and check components
exposed_params = []
components_available = True
for p in kdict['PARAMS']:
if not type(p) == tuple or not len(p) in [2, 3]:
print 'ERROR: invalid PARAMS attribute for feature %s !' % name
return None
if len(p) == 3:
# explicit parameter
exposed_params.append(p)
else:
params = []
if isinstance(p[0], AudioFeatureFactory):
if not AudioFeatureFactory.feature_available(p[0]):
components_available = False
# import parameters from a feature
params = p[0].get_parameters()
else:
# import parameters from a component
if yaafecore.isComponentAvailable(p[0]):
params = yaafecore.getComponentParameters(p[0])
else:
components_available = False
# override defaults
params = [(key, p[1].get(key, value), desc)
for (key, value, desc) in params
if p[1].get(key, True)]
exposed_params.extend(params)
exposed_params.sort(cmp=lambda x, y: cmp(x[0], y[0]))
kdict['_EXPOSED_PARAM_DESCRIPTORS'] = exposed_params
kdict['_COMPONENTS_AVAILABLE'] = components_available
# list all params
kdict['_ALL_PARAMS'] = [key for (key, default, desc) in exposed_params]
# create class
return type.__new__(mcs, name, base, kdict)
def __new__(mcs, name, base, kdict):
# check class attributes
if not "PARAMS" in kdict:
kdict["PARAMS"] = []
if not "TRANSFORM" in kdict:
kdict["TRANSFORM"] = False
# load component libraries
if "COMPONENT_LIBS" in kdict:
for lib in kdict["COMPONENT_LIBS"]:
if yaafecore.loadComponentLibrary(lib) != 0:
return
# compute exposed parameters and check components
exposed_params = []
components_available = True
for p in kdict["PARAMS"]:
if not type(p) == tuple or not len(p) in [2, 3]:
print "ERROR: invalid PARAMS attribute for feature %s !" % name
return None
if len(p) == 3:
# explicit parameter
exposed_params.append(p)
else:
params = []
if isinstance(p[0], AudioFeatureFactory):
if not AudioFeatureFactory.feature_available(p[0]):
components_available = False
# import parameters from a feature
params = p[0].get_parameters()
else:
# import parameters from a component
if yaafecore.isComponentAvailable(p[0]):
params = yaafecore.getComponentParameters(p[0])
else:
components_available = False
# override defaults
params = [(key, p[1].get(key, value), desc) for (key, value, desc) in params if p[1].get(key, True)]
exposed_params.extend(params)
exposed_params.sort(cmp=lambda x, y: cmp(x[0], y[0]))
kdict["_EXPOSED_PARAM_DESCRIPTORS"] = exposed_params
kdict["_COMPONENTS_AVAILABLE"] = components_available
# list all params
kdict["_ALL_PARAMS"] = [key for (key, default, desc) in exposed_params]
# create class
return type.__new__(mcs, name, base, kdict)
def processFile(self, engine, filename):
"""
Extract features from the given file using the given engine.
If an output format has been set, then output files will be written, else
output feature data can be read using engine's :py:meth:`Engine.readOutput`
or :py:meth:`Engine.readAllOutputs` methods.
:param engine: engine to use for feature extraction. It must already have been configured.
:type engine: :py:class:`Engine`
:param filename: audio file to process
:type filename: string
:return: 0 on success, negative value on fail
"""
if not AudioFileProcessor._YAAFE_IO_LOADED:
AudioFileProcessor._YAAFE_IO_LOADED = (
loadComponentLibrary('yaafe-io') == 0)
return yc.audiofileprocessor_processFile(self.ptr, engine.ptr,
filename)
def setOutputFormat(self, format, outDir, params):
"""
Set output format.
:param format: format to set
:type format: string
:param outDir: base output directory for output files
:type outDir: string
:param params: format parameters
:type params: dict
:return: True if ok, False if format does not exists.
"""
if not AudioFileProcessor._YAAFE_IO_LOADED:
AudioFileProcessor._YAAFE_IO_LOADED = (
loadComponentLibrary('yaafe-io') == 0)
tmp = ((c_char_p*2)*(len(params)+1))()
tmp[:-1] = [(c_char_p*2)(c_char_p(k), c_char_p(v))
for k, v in params.iteritems()]
if yc.audiofileprocessor_setOutputFormat(self.ptr, format,
outDir, tmp):
return True
return False
