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#!/usr/bin/env python
import numpy as np
import cv2 as cv
import os
import sys
import unittest
from tests_common import NewOpenCVTests
try:
if sys.version_info[:2] < (3, 0):
raise unittest.SkipTest('Python 2.x is not supported')
class CounterState:
def __init__(self):
self.counter = 0
@cv.gapi.op('stateful_counter',
in_types=[cv.GOpaque.Int],
out_types=[cv.GOpaque.Int])
class GStatefulCounter:
"""Accumulates state counter on every call"""
@staticmethod
def outMeta(desc):
return cv.empty_gopaque_desc()
@cv.gapi.kernel(GStatefulCounter)
class GStatefulCounterImpl:
"""Implementation for GStatefulCounter operation."""
@staticmethod
def setup(desc):
return CounterState()
@staticmethod
def run(value, state):
state.counter += value
return state.counter
class SumState:
def __init__(self):
self.sum = 0
@cv.gapi.op('stateful_sum',
in_types=[cv.GOpaque.Int, cv.GOpaque.Int],
out_types=[cv.GOpaque.Int])
class GStatefulSum:
"""Accumulates sum on every call"""
@staticmethod
def outMeta(lhs_desc, rhs_desc):
return cv.empty_gopaque_desc()
class gapi_sample_pipelines(NewOpenCVTests):
def test_stateful_kernel_single_instance(self):
g_in = cv.GOpaque.Int()
g_out = GStatefulCounter.on(g_in)
comp = cv.GComputation(cv.GIn(g_in), cv.GOut(g_out))
pkg = cv.gapi.kernels(GStatefulCounterImpl)
nums = [i for i in range(10)]
acc = 0
for v in nums:
acc = comp.apply(cv.gin(v), args=cv.gapi.compile_args(pkg))
self.assertEqual(sum(nums), acc)
def test_stateful_kernel_multiple_instances(self):
# NB: Every counter has his own independent state.
g_in = cv.GOpaque.Int()
g_out0 = GStatefulCounter.on(g_in)
g_out1 = GStatefulCounter.on(g_in)
comp = cv.GComputation(cv.GIn(g_in), cv.GOut(g_out0, g_out1))
pkg = cv.gapi.kernels(GStatefulCounterImpl)
nums = [i for i in range(10)]
acc0 = acc1 = 0
for v in nums:
acc0, acc1 = comp.apply(cv.gin(v), args=cv.gapi.compile_args(pkg))
ref = sum(nums)
self.assertEqual(ref, acc0)
self.assertEqual(ref, acc1)
def test_stateful_throw_setup(self):
@cv.gapi.kernel(GStatefulCounter)
class GThrowStatefulCounterImpl:
"""Implementation for GStatefulCounter operation
that throw exception in setup method"""
@staticmethod
def setup(desc):
raise Exception('Throw from setup method')
@staticmethod
def run(value, state):
raise Exception('Unreachable')
g_in = cv.GOpaque.Int()
g_out = GStatefulCounter.on(g_in)
comp = cv.GComputation(cv.GIn(g_in), cv.GOut(g_out))
pkg = cv.gapi.kernels(GThrowStatefulCounterImpl)
with self.assertRaises(Exception): comp.apply(cv.gin(42),
args=cv.gapi.compile_args(pkg))
def test_stateful_reset(self):
g_in = cv.GOpaque.Int()
g_out = GStatefulCounter.on(g_in)
comp = cv.GComputation(cv.GIn(g_in), cv.GOut(g_out))
pkg = cv.gapi.kernels(GStatefulCounterImpl)
cc = comp.compileStreaming(args=cv.gapi.compile_args(pkg))
cc.setSource(cv.gin(1))
cc.start()
for i in range(1, 10):
_, actual = cc.pull()
self.assertEqual(i, actual)
cc.stop()
cc.setSource(cv.gin(2))
cc.start()
for i in range(2, 10, 2):
_, actual = cc.pull()
self.assertEqual(i, actual)
cc.stop()
def test_stateful_multiple_inputs(self):
@cv.gapi.kernel(GStatefulSum)
class GStatefulSumImpl:
"""Implementation for GStatefulCounter operation."""
@staticmethod
def setup(lhs_desc, rhs_desc):
return SumState()
@staticmethod
def run(lhs, rhs, state):
state.sum+= lhs + rhs
return state.sum
g_in1 = cv.GOpaque.Int()
g_in2 = cv.GOpaque.Int()
g_out = GStatefulSum.on(g_in1, g_in2)
comp = cv.GComputation(cv.GIn(g_in1, g_in2), cv.GOut(g_out))
pkg = cv.gapi.kernels(GStatefulSumImpl)
lhs_list = [1, 10, 15]
rhs_list = [2, 14, 32]
ref_out = 0
for lhs, rhs in zip(lhs_list, rhs_list):
ref_out += lhs + rhs
gapi_out = comp.apply(cv.gin(lhs, rhs), cv.gapi.compile_args(pkg))
self.assertEqual(ref_out, gapi_out)
def test_stateful_multiple_inputs_throw(self):
@cv.gapi.kernel(GStatefulSum)
class GStatefulSumImplIncorrect:
"""Incorrect implementation for GStatefulCounter operation."""
# NB: setup methods is intentionally
# incorrect - accepts one meta arg instead of two
@staticmethod
def setup(desc):
return SumState()
@staticmethod
def run(lhs, rhs, state):
state.sum+= lhs + rhs
return state.sum
g_in1 = cv.GOpaque.Int()
g_in2 = cv.GOpaque.Int()
g_out = GStatefulSum.on(g_in1, g_in2)
comp = cv.GComputation(cv.GIn(g_in1, g_in2), cv.GOut(g_out))
pkg = cv.gapi.kernels(GStatefulSumImplIncorrect)
with self.assertRaises(Exception): comp.apply(cv.gin(42, 42),
args=cv.gapi.compile_args(pkg))
except unittest.SkipTest as e:
message = str(e)
class TestSkip(unittest.TestCase):
def setUp(self):
self.skipTest('Skip tests: ' + message)
def test_skip():
pass
pass
if __name__ == '__main__':
NewOpenCVTests.bootstrap()
|
