def test_parameter(self):
c = vx.CreateContext()
g = vx.CreateGraph(c)
img = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_U8)
dx = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_S16)
dy = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_S16)
node = vx.Sobel3x3Node(g, img, dx, dy)
param = vx.GetParameterByIndex(node, 0)
assert vx.GetStatus(vx.reference(param)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(param), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_PARAMETER)
s, v = vx.QueryParameter(param, vx.PARAMETER_ATTRIBUTE_REF, "vx_reference")
assert s == vx.SUCCESS
assert v == img
assert vx.SetParameterByIndex(node, 0, vx.reference(dx)) == vx.SUCCESS
s, v = vx.QueryParameter(param, vx.PARAMETER_ATTRIBUTE_REF, "vx_reference")
assert s == vx.SUCCESS
assert v == dx
assert vx.SetParameterByReference(param, vx.reference(dy)) == vx.SUCCESS
s, v = vx.QueryParameter(param, vx.PARAMETER_ATTRIBUTE_REF, "vx_reference")
assert s == vx.SUCCESS
assert v == dy
assert vx.ReleaseParameter(param) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_context(self):
c = vx.CreateContext()
assert vx.GetStatus(vx.reference(c)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(c), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_CONTEXT)
s, v = vx.QueryContext(c, vx.CONTEXT_ATTRIBUTE_VENDOR_ID, 'vx_uint16')
assert s == vx.SUCCESS
assert isinstance(v, int)
s, v = vx.QueryContext(c, vx.CONTEXT_ATTRIBUTE_IMPLEMENTATION, 'vx_char[VX_MAX_IMPLEMENTATION_NAME]', str)
assert s == vx.SUCCESS
assert isinstance(v, unicode)
s = vx.SetContextAttribute(c, vx.CONTEXT_ATTRIBUTE_IMMEDIATE_BORDER_MODE,
vx.border_mode_t(vx.BORDER_MODE_CONSTANT, 42))
assert s == vx.SUCCESS
s, v = vx.QueryContext(c, vx.CONTEXT_ATTRIBUTE_IMMEDIATE_BORDER_MODE, 'vx_border_mode_t')
assert s == vx.SUCCESS
assert v.mode == vx.BORDER_MODE_CONSTANT
assert v.constant_value == 42
vx.Hint(vx.reference(c), vx.HINT_SERIALIZE)
vx.Directive(vx.reference(c), vx.DIRECTIVE_DISABLE_LOGGING)
assert vx.GetContext(vx.reference(c)) == c
vx.RegisterUserStruct(c, 42)
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_threshold(self):
c = vx.CreateContext()
threshold = vx.CreateThreshold(c, vx.THRESHOLD_TYPE_BINARY, vx.TYPE_UINT8)
assert vx.GetStatus(vx.reference(threshold)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(threshold), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_THRESHOLD)
assert vx.QueryThreshold(threshold, vx.THRESHOLD_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.THRESHOLD_TYPE_BINARY)
assert vx.SetThresholdAttribute(threshold, vx.THRESHOLD_ATTRIBUTE_THRESHOLD_VALUE, 7, 'vx_int32') == vx.SUCCESS
assert vx.QueryThreshold(threshold, vx.THRESHOLD_ATTRIBUTE_THRESHOLD_VALUE, 'vx_int32') == (vx.SUCCESS, 7)
assert vx.ReleaseThreshold(threshold) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_remap(self):
c = vx.CreateContext()
remap = vx.CreateRemap(c, 640, 480, 320, 240)
assert vx.GetStatus(vx.reference(remap)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(remap), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_REMAP)
assert vx.QueryRemap(remap, vx.REMAP_ATTRIBUTE_DESTINATION_HEIGHT, 'vx_uint32') == (vx.SUCCESS, 240)
assert vx.SetRemapPoint(remap, 10, 15, 20.5, 30.5) == vx.SUCCESS
assert vx.GetRemapPoint(remap, 10, 15) == (vx.SUCCESS, 20.5, 30.5)
assert vx.ReleaseRemap(remap) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_scalar(self):
c = vx.CreateContext()
scalar = vx.CreateScalar(c, vx.TYPE_INT16, 7)
assert vx.GetStatus(vx.reference(scalar)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(scalar), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_SCALAR)
assert vx.QueryScalar(scalar, vx.SCALAR_ATTRIBUTE_TYPE, "vx_enum") == (vx.SUCCESS, vx.TYPE_INT16)
assert vx.ReadScalarValue(scalar) == (vx.SUCCESS, 7)
assert vx.WriteScalarValue(scalar, 42) == vx.SUCCESS
assert vx.ReadScalarValue(scalar) == (vx.SUCCESS, 42)
assert vx.ReleaseScalar(scalar) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_graph(self):
c = vx.CreateContext()
g = vx.CreateGraph(c)
assert vx.GetStatus(vx.reference(g)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(g), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_GRAPH)
assert vx.IsGraphVerified(g) == vx.false_e
assert vx.QueryGraph(g, vx.GRAPH_ATTRIBUTE_NUMNODES, 'vx_uint32') == (vx.SUCCESS, 0)
img = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_U8)
dx = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_S16)
dy = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_S16)
node = vx.Sobel3x3Node(g, img, dx, dy)
assert vx.VerifyGraph(g) == vx.SUCCESS
assert vx.ProcessGraph(g) == vx.SUCCESS
assert vx.ScheduleGraph(g) == vx.SUCCESS
assert vx.WaitGraph(g) == vx.SUCCESS
p = vx.GetParameterByIndex(node, 0)
assert vx.AddParameterToGraph(g, p) == vx.SUCCESS
p2 = vx.GetGraphParameterByIndex(g, 0)
assert vx.SetGraphParameterByIndex(g, 0, vx.reference(dx)) == vx.SUCCESS
assert vx.VerifyGraph(g) != vx.SUCCESS
assert vx.SetGraphParameterByIndex(g, 0, vx.reference(img)) == vx.SUCCESS
assert vx.VerifyGraph(g) == vx.SUCCESS
assert vx.IsGraphVerified(g) == vx.true_e
def callback(node):
callback.called = True
return vx.SUCCESS
assert vx.AssignNodeCallback(node, callback) == vx.SUCCESS
assert vx.ProcessGraph(g) == vx.SUCCESS
assert callback.called
def callback(node):
raise TypeError('Escaping from callback')
return vx.SUCCESS
assert vx.AssignNodeCallback(node, callback) != vx.SUCCESS
assert vx.AssignNodeCallback(node, None) == vx.SUCCESS
assert vx.AssignNodeCallback(node, callback) == vx.SUCCESS
assert vx.VerifyGraph(g) == vx.SUCCESS
assert vx.ProcessGraph(g) != vx.SUCCESS
img = vx.CreateVirtualImage(g, 640, 480, vx.DF_IMAGE_RGB)
assert vx.GetStatus(vx.reference(img)) == vx.SUCCESS
assert vx.ReleaseGraph(g) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_matrix(self):
c = vx.CreateContext()
matrix = vx.CreateMatrix(c, vx.TYPE_INT32, 3, 3)
assert vx.GetStatus(vx.reference(matrix)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(matrix), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_MATRIX)
assert vx.QueryMatrix(matrix, vx.MATRIX_ATTRIBUTE_COLUMNS, 'vx_size') == (vx.SUCCESS, 3)
data = array('i', [42]) * 9
assert vx.WriteMatrix(matrix, data) == vx.SUCCESS
data = array('i', [0]) * 9
assert vx.ReadMatrix(matrix, data) == vx.SUCCESS
assert data[0] == 42
assert vx.ReleaseMatrix(matrix) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_pyramid(self):
c = vx.CreateContext()
pyramid = vx.CreatePyramid(c, 4, vx.SCALE_PYRAMID_HALF, 640, 480, vx.DF_IMAGE_U8)
assert vx.GetStatus(vx.reference(pyramid)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(pyramid), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_PYRAMID)
assert vx.QueryPyramid(pyramid, vx.PYRAMID_ATTRIBUTE_WIDTH, 'vx_uint32') == (vx.SUCCESS, 640)
img = vx.GetPyramidLevel(pyramid, 1)
assert img
assert vx.QueryImage(img, vx.IMAGE_ATTRIBUTE_WIDTH, 'vx_uint32') == (vx.SUCCESS, 320)
g = vx.CreateGraph(c)
p = vx.CreateVirtualPyramid(g, 3, vx.SCALE_PYRAMID_HALF, 0, 0, vx.DF_IMAGE_VIRT)
assert vx.ReleasePyramid(p) == vx.SUCCESS
assert vx.ReleasePyramid(pyramid) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_kernel(self):
c = vx.CreateContext()
kernel = vx.GetKernelByName(c, b"org.khronos.openvx.sobel_3x3")
assert vx.GetStatus(vx.reference(kernel)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(kernel), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_KERNEL)
k = vx.GetKernelByEnum(c, vx.KERNEL_SOBEL_3x3)
assert kernel == k
s, i = vx.QueryKernel(kernel, vx.KERNEL_ATTRIBUTE_ENUM, 'vx_enum')
assert i == vx.KERNEL_SOBEL_3x3
vx.ReleaseKernel(k)
param = vx.GetKernelParameterByIndex(kernel, 0)
assert vx.GetStatus(vx.reference(param)) == vx.SUCCESS
assert vx.LoadKernels(c, "openvx-extras") == vx.SUCCESS
k = vx.GetKernelByName(c, b"org.khronos.extra.edge_trace")
assert vx.GetStatus(vx.reference(k)) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_convolution(self):
c = vx.CreateContext()
convolution = vx.CreateConvolution(c, 3, 3)
assert vx.GetStatus(vx.reference(convolution)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(convolution), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_CONVOLUTION)
assert vx.QueryConvolution(convolution, vx.CONVOLUTION_ATTRIBUTE_ROWS, 'vx_size') == (vx.SUCCESS, 3)
data = array('i', [42]) * 9
assert vx.WriteConvolutionCoefficients(convolution, data) == vx.SUCCESS
data = array('i', [0]) * 9
assert vx.ReadConvolutionCoefficients(convolution, data) == vx.SUCCESS
assert data[0] == 42
assert vx.SetConvolutionAttribute(convolution, vx.CONVOLUTION_ATTRIBUTE_SCALE, 8, 'vx_uint32') == vx.SUCCESS
assert vx.QueryConvolution(convolution, vx.CONVOLUTION_ATTRIBUTE_SCALE, 'vx_uint32') == (vx.SUCCESS, 8)
assert vx.ReleaseConvolution(convolution) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_distribution(self):
c = vx.CreateContext()
distribution = vx.CreateDistribution(c, 8, 0, 16)
assert vx.GetStatus(vx.reference(distribution)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(distribution), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_DISTRIBUTION)
assert vx.QueryDistribution(distribution, vx.DISTRIBUTION_ATTRIBUTE_BINS, 'vx_size') == (vx.SUCCESS, 8)
s, data = vx.AccessDistribution(distribution, None, vx.READ_AND_WRITE)
assert s == vx.SUCCESS
data[:4] = b'HHHH'
assert vx.CommitDistribution(distribution, data) == vx.SUCCESS
s, data = vx.AccessDistribution(distribution, None, vx.READ_ONLY)
assert data[:4] == b'HHHH'
assert vx.CommitDistribution(distribution, data) == vx.SUCCESS
data = array('I', [0]) * 256
vx.AccessDistribution(distribution, data, vx.READ_ONLY)
assert data[0] == sum(ord('H') * i for i in [2**24 + 2**16 + 2**8 + 1])
assert vx.CommitDistribution(distribution, data) == vx.SUCCESS
assert vx.ReleaseDistribution(distribution) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_lut(self):
c = vx.CreateContext()
lut = vx.CreateLUT(c, vx.TYPE_UINT8, 256)
assert vx.GetStatus(vx.reference(lut)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(lut), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_LUT)
assert vx.QueryLUT(lut, vx.LUT_ATTRIBUTE_COUNT, 'vx_size') == (vx.SUCCESS, 256)
s, data = vx.AccessLUT(lut, None, vx.READ_AND_WRITE)
assert s == vx.SUCCESS
data[1] = b'H'
assert vx.CommitLUT(lut, data) == vx.SUCCESS
s, data = vx.AccessLUT(lut, None, vx.READ_ONLY)
assert data[1] == b'H'
assert vx.CommitLUT(lut, data) == vx.SUCCESS
data = array('B', [0]) * 256
vx.AccessLUT(lut, data, vx.READ_ONLY)
assert data[1] == ord('H')
assert vx.CommitLUT(lut, data) == vx.SUCCESS
assert vx.ReleaseLUT(lut) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_array(self):
c = vx.CreateContext()
arr = vx.CreateArray(c, vx.TYPE_COORDINATES2D, 64)
assert vx.GetStatus(vx.reference(arr)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(arr), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_ARRAY)
assert vx.QueryArray(arr, vx.ARRAY_ATTRIBUTE_CAPACITY, 'vx_size') == (vx.SUCCESS, 64)
s, size = vx.QueryArray(arr, vx.ARRAY_ATTRIBUTE_ITEMSIZE, 'vx_size')
data = array('B', [0]) * size * 10
d = vx.ArrayItem('vx_coordinates2d_t', data, 0, size)
d.x, d.y, d[1].x, d[1].y = 1, 2, 3, 4
assert vx.AddArrayItems(arr, 10, data, size) == vx.SUCCESS
assert vx.AddArrayItems(arr, 10, d, size) == vx.SUCCESS
assert vx.QueryArray(arr, vx.ARRAY_ATTRIBUTE_NUMITEMS, 'vx_size') == (vx.SUCCESS, 20)
assert vx.TruncateArray(arr, 15) == vx.SUCCESS
assert vx.QueryArray(arr, vx.ARRAY_ATTRIBUTE_NUMITEMS, 'vx_size') == (vx.SUCCESS, 15)
status, stride, ptr = vx.AccessArrayRange(arr, 0, 14, None, None, vx.READ_AND_WRITE)
assert status == vx.SUCCESS
d0 = vx.ArrayItem('vx_coordinates2d_t', ptr, 0, stride)
d1 = vx.ArrayItem('vx_coordinates2d_t', ptr, 1, stride)
assert (d0.x, d0.y, d1.x, d1.y) == (1, 2, 3, 4)
d1.y = 42
assert vx.CommitArrayRange(arr, 0, 14, ptr) == vx.SUCCESS
data = array('B', [0]) * size * 15 * 2
status, stride, ptr = vx.AccessArrayRange(arr, 0, 14, size*2, data, vx.READ_AND_WRITE)
assert stride == size*2
d = vx.ArrayItem('vx_coordinates2d_t', data, 0, size)
assert (d.x, d.y, d[2].x, d[2].y) == (1, 2, 3, 42)
assert vx.CommitArrayRange(arr, 0, 14, ptr) == vx.SUCCESS
g = vx.CreateGraph(c)
a = vx.CreateVirtualArray(g, vx.TYPE_KEYPOINT, 64)
assert vx.ReleaseArray(a) == vx.SUCCESS
assert vx.ReleaseArray(arr) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_node(self):
c = vx.CreateContext()
g = vx.CreateGraph(c)
k = vx.GetKernelByEnum(c, vx.KERNEL_SOBEL_3x3)
assert vx.GetStatus(vx.reference(k)) == vx.SUCCESS
node = vx.CreateGenericNode(g, k)
assert vx.GetStatus(vx.reference(node)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(node), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_NODE)
s = vx.SetNodeAttribute(node, vx.NODE_ATTRIBUTE_BORDER_MODE,
vx.border_mode_t(vx.BORDER_MODE_CONSTANT, 42))
assert s == vx.SUCCESS
s, v = vx.QueryNode(node, vx.NODE_ATTRIBUTE_BORDER_MODE, 'vx_border_mode_t')
assert v.mode == vx.BORDER_MODE_CONSTANT
assert v.constant_value == 42
assert vx.ReleaseNode(node) == vx.SUCCESS
node = vx.CreateGenericNode(g, k)
assert vx.RemoveNode(node) == vx.SUCCESS
assert vx.ReleaseGraph(g) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def test_delay(self):
c = vx.CreateContext()
img = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_RGB)
delay = vx.CreateDelay(c, vx.reference(img), 3)
assert vx.GetStatus(vx.reference(delay)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(delay), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_DELAY)
assert vx.QueryDelay(delay, vx.DELAY_ATTRIBUTE_SLOTS, 'vx_size') == (vx.SUCCESS, 3)
ref0 = vx.GetReferenceFromDelay(delay, 0)
ref1 = vx.GetReferenceFromDelay(delay, 1)
ref2 = vx.GetReferenceFromDelay(delay, 2)
g = vx.CreateGraph(c)
node = vx.Sobel3x3Node(g, vx.from_reference(ref0), vx.from_reference(ref1), vx.from_reference(ref2))
param = vx.GetParameterByIndex(node, 1)
s, v = vx.QueryParameter(param, vx.PARAMETER_ATTRIBUTE_REF, "vx_reference")
assert s == vx.SUCCESS
assert v == ref1
assert vx.AgeDelay(delay) == vx.SUCCESS
s, v = vx.QueryParameter(param, vx.PARAMETER_ATTRIBUTE_REF, "vx_reference")
assert s == vx.SUCCESS
assert v == ref0
assert vx.ReleaseDelay(delay) == vx.SUCCESS
assert vx.ReleaseContext(c) == vx.SUCCESS
def reference_count(self):
status, val = vx.QueryReference(self.vx_ref, vx.REF_ATTRIBUTE_COUNT,
'vx_uint32')
return val
def test_image(self):
c = vx.CreateContext()
img = vx.CreateImage(c, 640, 480, vx.DF_IMAGE_RGB)
assert vx.GetStatus(vx.reference(img)) == vx.SUCCESS
assert vx.QueryReference(vx.reference(img), vx.REF_ATTRIBUTE_TYPE, 'vx_enum') == (vx.SUCCESS, vx.TYPE_IMAGE)
roi = vx.CreateImageFromROI(img, vx.rectangle_t(10, 10, 100, 100))
assert vx.GetStatus(vx.reference(roi)) == vx.SUCCESS
assert vx.ReleaseImage(roi) == vx.SUCCESS
roi = None
const = vx.CreateUniformImage(c, 640, 480, vx.DF_IMAGE_S16, 7, 'vx_int16')
assert vx.GetStatus(vx.reference(const)) == vx.SUCCESS
const = vx.CreateUniformImage(c, 640, 480, vx.DF_IMAGE_RGB, (7, 8, 9), 'vx_uint8[]')
assert vx.GetStatus(vx.reference(const)) == vx.SUCCESS
addr = vx.imagepatch_addressing_t(640, 480, 1, 640, vx.SCALE_UNITY, vx.SCALE_UNITY, 1, 1)
data = array('B', [0x42]) * (640 * 480)
hand = vx.CreateImageFromHandle(c, vx.DF_IMAGE_U8, (addr,), (data,), vx.IMPORT_TYPE_HOST)
assert vx.GetStatus(vx.reference(hand)) == vx.SUCCESS
hand = vx.CreateImageFromHandle(c, vx.DF_IMAGE_U8, addr, data, vx.IMPORT_TYPE_HOST)
assert vx.GetStatus(vx.reference(hand)) == vx.SUCCESS
hand = vx.CreateImageFromHandle(c, vx.DF_IMAGE_RGB, (addr, addr, addr), (data, data, data), vx.IMPORT_TYPE_HOST)
assert vx.GetStatus(vx.reference(hand)) == vx.SUCCESS
assert vx.QueryImage(img, vx.IMAGE_ATTRIBUTE_WIDTH, 'vx_uint32') == (vx.SUCCESS, 640)
assert vx.SetImageAttribute(img, vx.IMAGE_ATTRIBUTE_SPACE, vx.COLOR_SPACE_BT601_525, 'vx_enum') == vx.SUCCESS
assert vx.QueryImage(img, vx.IMAGE_ATTRIBUTE_SPACE, 'vx_enum') == (vx.SUCCESS, vx.COLOR_SPACE_BT601_525)
assert vx.GetContext(vx.reference(img)) == c
r = vx.rectangle_t(10, 20, 30, 40)
s = vx.ComputeImagePatchSize(img, r, 0)
status, addr, ptr = vx.AccessImagePatch(img, r, 0, None, None, vx.READ_AND_WRITE)
assert status == vx.SUCCESS
assert addr.dim_x == addr.dim_y == 20
ptr[0] = b'H'
assert vx.CommitImagePatch(img, r, 0, addr, ptr) == vx.SUCCESS
status, addr, ptr = vx.AccessImagePatch(img, r, 0, None, None, vx.READ_AND_WRITE)
assert status == vx.SUCCESS
assert ptr[0] == b'H'
pixel = vx.FormatImagePatchAddress1d(ptr, 0, addr)
assert pixel[0] == b'H'
assert vx.CommitImagePatch(img, r, 0, addr, ptr) == vx.SUCCESS
assert 7 not in data
addr = vx.imagepatch_addressing_t(20, 20, 1, 20, vx.SCALE_UNITY, vx.SCALE_UNITY, 1, 1)
rdata = array('B', [0]) * (20 * 20)
status, addr, ptr = vx.AccessImagePatch(hand, r, 0, addr, rdata, vx.READ_AND_WRITE)
assert rdata[1] == 0x42
rdata[1] = 7
pixel = vx.FormatImagePatchAddress1d(ptr, 1, addr)
assert pixel[0] == b'\x07'
pixel = vx.FormatImagePatchAddress2d(ptr, 0, 0, addr)
assert pixel[0] == b'\x42'
assert vx.CommitImagePatch(hand, r, 0, addr, ptr) == vx.SUCCESS
assert data[11 + 20*640] == 7
status, r = vx.GetValidRegionImage(const)
assert status == vx.SUCCESS
assert r.end_x == 640
assert r.end_y == 480
assert vx.ReleaseContext(c) == vx.SUCCESS
def _query_ref(reference, attribute, c_type, python_type=None):
return vx.QueryReference(vx.reference(reference), attribute, c_type,
python_type)
def reference_type(self):
status, val = vx.QueryReference(self.vx_ref, vx.REF_ATTRIBUTE_TYPE,
'vx_enum')
return val