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__all__ = ['op', 'kernel']
import sys
import cv2 as cv
# NB: Register function in specific module
def register(mname):
def parameterized(func):
sys.modules[mname].__dict__[func.__name__] = func
return func
return parameterized
@register('cv2.gapi')
def networks(*args):
return cv.gapi_GNetPackage(list(map(cv.detail.strip, args)))
@register('cv2.gapi')
def compile_args(*args):
return list(map(cv.GCompileArg, args))
@register('cv2')
def GIn(*args):
return [*args]
@register('cv2')
def GOut(*args):
return [*args]
@register('cv2')
def gin(*args):
return [*args]
@register('cv2.gapi')
def descr_of(*args):
return [*args]
@register('cv2')
class GOpaque():
# NB: Inheritance from c++ class cause segfault.
# So just aggregate cv.GOpaqueT instead of inheritance
def __new__(cls, argtype):
return cv.GOpaqueT(argtype)
class Bool():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_BOOL)
class Int():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_INT)
class Double():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_DOUBLE)
class Float():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_FLOAT)
class String():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_STRING)
class Point():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_POINT)
class Point2f():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_POINT2F)
class Point3f():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_POINT3F)
class Size():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_SIZE)
class Rect():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_RECT)
class Prim():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_DRAW_PRIM)
class Any():
def __new__(self):
return cv.GOpaqueT(cv.gapi.CV_ANY)
@register('cv2')
class GArray():
# NB: Inheritance from c++ class cause segfault.
# So just aggregate cv.GArrayT instead of inheritance
def __new__(cls, argtype):
return cv.GArrayT(argtype)
class Bool():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_BOOL)
class Int():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_INT)
class Double():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_DOUBLE)
class Float():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_FLOAT)
class String():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_STRING)
class Point():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_POINT)
class Point2f():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_POINT2F)
class Point3f():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_POINT3F)
class Size():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_SIZE)
class Rect():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_RECT)
class Scalar():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_SCALAR)
class Mat():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_MAT)
class GMat():
def __new__(self):
return cv.GArrayT(cv.gapi.CV_GMAT)
class Prim():
def __new__(self):
return cv.GArray(cv.gapi.CV_DRAW_PRIM)
class Any():
def __new__(self):
return cv.GArray(cv.gapi.CV_ANY)
# NB: Top lvl decorator takes arguments
def op(op_id, in_types, out_types):
garray_types= {
cv.GArray.Bool: cv.gapi.CV_BOOL,
cv.GArray.Int: cv.gapi.CV_INT,
cv.GArray.Double: cv.gapi.CV_DOUBLE,
cv.GArray.Float: cv.gapi.CV_FLOAT,
cv.GArray.String: cv.gapi.CV_STRING,
cv.GArray.Point: cv.gapi.CV_POINT,
cv.GArray.Point2f: cv.gapi.CV_POINT2F,
cv.GArray.Point3f: cv.gapi.CV_POINT3F,
cv.GArray.Size: cv.gapi.CV_SIZE,
cv.GArray.Rect: cv.gapi.CV_RECT,
cv.GArray.Scalar: cv.gapi.CV_SCALAR,
cv.GArray.Mat: cv.gapi.CV_MAT,
cv.GArray.GMat: cv.gapi.CV_GMAT,
cv.GArray.Prim: cv.gapi.CV_DRAW_PRIM,
cv.GArray.Any: cv.gapi.CV_ANY
}
gopaque_types= {
cv.GOpaque.Size: cv.gapi.CV_SIZE,
cv.GOpaque.Rect: cv.gapi.CV_RECT,
cv.GOpaque.Bool: cv.gapi.CV_BOOL,
cv.GOpaque.Int: cv.gapi.CV_INT,
cv.GOpaque.Double: cv.gapi.CV_DOUBLE,
cv.GOpaque.Float: cv.gapi.CV_FLOAT,
cv.GOpaque.String: cv.gapi.CV_STRING,
cv.GOpaque.Point: cv.gapi.CV_POINT,
cv.GOpaque.Point2f: cv.gapi.CV_POINT2F,
cv.GOpaque.Point3f: cv.gapi.CV_POINT3F,
cv.GOpaque.Size: cv.gapi.CV_SIZE,
cv.GOpaque.Rect: cv.gapi.CV_RECT,
cv.GOpaque.Prim: cv.gapi.CV_DRAW_PRIM,
cv.GOpaque.Any: cv.gapi.CV_ANY
}
type2str = {
cv.gapi.CV_BOOL: 'cv.gapi.CV_BOOL' ,
cv.gapi.CV_INT: 'cv.gapi.CV_INT' ,
cv.gapi.CV_DOUBLE: 'cv.gapi.CV_DOUBLE' ,
cv.gapi.CV_FLOAT: 'cv.gapi.CV_FLOAT' ,
cv.gapi.CV_STRING: 'cv.gapi.CV_STRING' ,
cv.gapi.CV_POINT: 'cv.gapi.CV_POINT' ,
cv.gapi.CV_POINT2F: 'cv.gapi.CV_POINT2F' ,
cv.gapi.CV_POINT3F: 'cv.gapi.CV_POINT3F' ,
cv.gapi.CV_SIZE: 'cv.gapi.CV_SIZE',
cv.gapi.CV_RECT: 'cv.gapi.CV_RECT',
cv.gapi.CV_SCALAR: 'cv.gapi.CV_SCALAR',
cv.gapi.CV_MAT: 'cv.gapi.CV_MAT',
cv.gapi.CV_GMAT: 'cv.gapi.CV_GMAT',
cv.gapi.CV_DRAW_PRIM: 'cv.gapi.CV_DRAW_PRIM'
}
# NB: Second lvl decorator takes class to decorate
def op_with_params(cls):
if not in_types:
raise Exception('{} operation should have at least one input!'.format(cls.__name__))
if not out_types:
raise Exception('{} operation should have at least one output!'.format(cls.__name__))
for i, t in enumerate(out_types):
if t not in [cv.GMat, cv.GScalar, *garray_types, *gopaque_types]:
raise Exception('{} unsupported output type: {} in position: {}'
.format(cls.__name__, t.__name__, i))
def on(*args):
if len(in_types) != len(args):
raise Exception('Invalid number of input elements!\nExpected: {}, Actual: {}'
.format(len(in_types), len(args)))
for i, (t, a) in enumerate(zip(in_types, args)):
if t in garray_types:
if not isinstance(a, cv.GArrayT):
raise Exception("{} invalid type for argument {}.\nExpected: {}, Actual: {}"
.format(cls.__name__, i, cv.GArrayT.__name__, type(a).__name__))
elif a.type() != garray_types[t]:
raise Exception("{} invalid GArrayT type for argument {}.\nExpected: {}, Actual: {}"
.format(cls.__name__, i, type2str[garray_types[t]], type2str[a.type()]))
elif t in gopaque_types:
if not isinstance(a, cv.GOpaqueT):
raise Exception("{} invalid type for argument {}.\nExpected: {}, Actual: {}"
.format(cls.__name__, i, cv.GOpaqueT.__name__, type(a).__name__))
elif a.type() != gopaque_types[t]:
raise Exception("{} invalid GOpaque type for argument {}.\nExpected: {}, Actual: {}"
.format(cls.__name__, i, type2str[gopaque_types[t]], type2str[a.type()]))
else:
if t != type(a):
raise Exception('{} invalid input type for argument {}.\nExpected: {}, Actual: {}'
.format(cls.__name__, i, t.__name__, type(a).__name__))
op = cv.gapi.__op(op_id, cls.outMeta, *args)
out_protos = []
for i, out_type in enumerate(out_types):
if out_type == cv.GMat:
out_protos.append(op.getGMat())
elif out_type == cv.GScalar:
out_protos.append(op.getGScalar())
elif out_type in gopaque_types:
out_protos.append(op.getGOpaque(gopaque_types[out_type]))
elif out_type in garray_types:
out_protos.append(op.getGArray(garray_types[out_type]))
else:
raise Exception("""In {}: G-API operation can't produce the output with type: {} in position: {}"""
.format(cls.__name__, out_type.__name__, i))
return tuple(out_protos) if len(out_protos) != 1 else out_protos[0]
# NB: Extend operation class
cls.id = op_id
cls.on = staticmethod(on)
return cls
return op_with_params
def kernel(op_cls):
# NB: Second lvl decorator takes class to decorate
def kernel_with_params(cls):
# NB: Add new members to kernel class
cls.id = op_cls.id
cls.outMeta = op_cls.outMeta
return cls
return kernel_with_params
cv.gapi.wip.GStreamerPipeline = cv.gapi_wip_gst_GStreamerPipeline
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