test_conformance/test_sobel3x3.c - third_party/github.com/KhronosGroup/OpenVX-cts - Git at Google

 /*

  * Copyright (c) 2012-2017 The Khronos Group Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include "test_engine/test.h"
 #include <VX/vx.h>
 #include <VX/vxu.h>
 #include "shared_functions.h"


 TESTCASE(Sobel3x3, CT_VXContext, ct_setup_vx_context, 0)


 TEST(Sobel3x3, testNodeCreation)
 {
     vx_context context = context_->vx_context_;
     vx_image src_image = 0, dst_x_image = 0, dst_y_image;
     vx_graph graph = 0;
     vx_node node = 0;

     ASSERT_VX_OBJECT(src_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_U8), VX_TYPE_IMAGE);

     ASSERT_VX_OBJECT(dst_x_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_S16), VX_TYPE_IMAGE);

     ASSERT_VX_OBJECT(dst_y_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_S16), VX_TYPE_IMAGE);

     ASSERT_VX_OBJECT(graph = vxCreateGraph(context), VX_TYPE_GRAPH);

     ASSERT_VX_OBJECT(node = vxSobel3x3Node(graph, src_image, dst_x_image, dst_y_image), VX_TYPE_NODE);

     VX_CALL(vxReleaseNode(&node));
     VX_CALL(vxReleaseGraph(&graph));
     VX_CALL(vxReleaseImage(&dst_x_image));
     VX_CALL(vxReleaseImage(&dst_y_image));
     VX_CALL(vxReleaseImage(&src_image));

     ASSERT(node == 0);
     ASSERT(graph == 0);
     ASSERT(dst_x_image == 0);
     ASSERT(dst_y_image == 0);
     ASSERT(src_image == 0);
 }


 // Generate input to cover these requirements:
 // There should be a image with randomly generated pixel intensities.
 static CT_Image sobel3x3_generate_random(const char* fileName, int width, int height)
 {
     CT_Image image;

     ASSERT_NO_FAILURE_(return 0,
             image = ct_allocate_ct_image_random(width, height, VX_DF_IMAGE_U8, &CT()->seed_, 0, 256));

     return image;
 }

 static CT_Image sobel3x3_read_image(const char* fileName, int width, int height)
 {
     CT_Image image = NULL;
     ASSERT_(return 0, width == 0 && height == 0);
     image = ct_read_image(fileName, 1);
     ASSERT_(return 0, image);
     ASSERT_(return 0, image->format == VX_DF_IMAGE_U8);
     return image;
 }

 static int16_t sobel_x_get(int32_t *values)
 {
     int32_t res = (-values[0])     + (values[2]) +
                   (-values[3] * 2) + (values[5] * 2) +
                   (-values[6])     + (values[8]);
     return (int16_t)res;
 }

 static int16_t sobel_y_get(int32_t *values)
 {
     int32_t res = (-values[0])     + (values[6]) +
                   (-values[1] * 2) + (values[7] * 2) +
                   (-values[2])     + (values[8]);
     return (int16_t)res;
 }

 static void sobel3x3_calculate(CT_Image src, uint32_t x, uint32_t y, int16_t *sobel_x, int16_t *sobel_y)
 {
     int32_t values[9] = {
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y - 1),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y - 1),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y - 1),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y - 0),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y - 0),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y - 0),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y + 1),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y + 1),
         (int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y + 1)
     };
     *sobel_x = sobel_x_get(values);
     *sobel_y = sobel_y_get(values);
 }

 static void sobel3x3_calculate_replicate(CT_Image src, uint32_t x_, uint32_t y_, int16_t *sobel_x, int16_t *sobel_y)
 {
     int32_t x = (int)x_;
     int32_t y = (int)y_;
     int32_t values[9] = {
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y - 1),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y - 1),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y - 1),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y - 0),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y - 0),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y - 0),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y + 1),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y + 1),
         (int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y + 1)
     };
     *sobel_x = sobel_x_get(values);
     *sobel_y = sobel_y_get(values);
 }

 static void sobel3x3_calculate_constant(CT_Image src, uint32_t x_, uint32_t y_, vx_uint32 constant_value, int16_t *sobel_x, int16_t *sobel_y)
 {
     int32_t x = (int)x_;
     int32_t y = (int)y_;
     int32_t values[9] = {
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y - 1, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y - 1, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y - 1, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y - 0, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y - 0, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y - 0, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y + 1, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y + 1, constant_value),
         (int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y + 1, constant_value)
     };
     *sobel_x = sobel_x_get(values);
     *sobel_y = sobel_y_get(values);
 }


 void sobel3x3_create_reference_image(CT_Image src, vx_border_t border, CT_Image *p_dst_x, CT_Image *p_dst_y)
 {
     CT_Image dst_x = NULL, dst_y = NULL;

     CT_ASSERT(src->format == VX_DF_IMAGE_U8);

     dst_x = ct_allocate_image(src->width, src->height, VX_DF_IMAGE_S16);
     dst_y = ct_allocate_image(src->width, src->height, VX_DF_IMAGE_S16);

     if (border.mode == VX_BORDER_UNDEFINED)
     {
         CT_FILL_IMAGE_16S(return, dst_x,
                 if (x >= 1 && y >= 1 && x < src->width - 1 && y < src->height - 1)
                 {
                     int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
                     sobel3x3_calculate(src, x, y, dst_data, dst_y_data);
                 });
     }
     else if (border.mode == VX_BORDER_REPLICATE)
     {
         CT_FILL_IMAGE_16S(return, dst_x,
                 {
                     int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
                     sobel3x3_calculate_replicate(src, x, y, dst_data, dst_y_data);
                 });
     }
     else if (border.mode == VX_BORDER_CONSTANT)
     {
         vx_uint32 constant_value = border.constant_value.U32;
         CT_FILL_IMAGE_16S(return, dst_x,
                 {
                     int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
                     sobel3x3_calculate_constant(src, x, y, constant_value, dst_data, dst_y_data);
                 });
     }
     else
     {
         ASSERT_(return, 0);
     }

     *p_dst_x = dst_x;
     *p_dst_y = dst_y;
 }


 static void sobel3x3_check(CT_Image src, CT_Image dst_x, CT_Image dst_y, vx_border_t border)
 {
     CT_Image dst_x_ref = NULL, dst_y_ref = NULL;

     ASSERT(src && dst_x && dst_y);

     ASSERT_NO_FAILURE(sobel3x3_create_reference_image(src, border, &dst_x_ref, &dst_y_ref));

     ASSERT_NO_FAILURE(
         if (border.mode == VX_BORDER_UNDEFINED)
         {
             ct_adjust_roi(dst_x,  1, 1, 1, 1);
             ct_adjust_roi(dst_x_ref, 1, 1, 1, 1);
             ct_adjust_roi(dst_y,  1, 1, 1, 1);
             ct_adjust_roi(dst_y_ref, 1, 1, 1, 1);
         }
     );

     EXPECT_EQ_CTIMAGE(dst_x_ref, dst_x);
     EXPECT_EQ_CTIMAGE(dst_y_ref, dst_y);
 #if 0
     if (CT_HasFailure())
     {
         printf("=== SRC ===\n");
         ct_dump_image_info(src);
         printf("=== DST X ===\n");
         ct_dump_image_info(dst_x);
         printf("=== EXPECTED X ===\n");
         ct_dump_image_info(dst_x_ref);
         printf("=== DST Y ===\n");
         ct_dump_image_info(dst_y);
         printf("=== EXPECTED Y ===\n");
         ct_dump_image_info(dst_y_ref);
     }
 #endif
 }

 typedef struct {
     const char* testName;
     CT_Image (*generator)(const char* fileName, int width, int height);
     const char* fileName;
     vx_border_t border;
     int width, height;
 } Filter_Arg;

 #define SOBEL_PARAMETERS \
     CT_GENERATE_PARAMETERS("randomInput", ADD_VX_BORDERS_REQUIRE_UNDEFINED_ONLY, ADD_SIZE_SMALL_SET, ARG, sobel3x3_generate_random, NULL), \
     CT_GENERATE_PARAMETERS("lena", ADD_VX_BORDERS_REQUIRE_UNDEFINED_ONLY, ADD_SIZE_NONE, ARG, sobel3x3_read_image, "lena.bmp")

 TEST_WITH_ARG(Sobel3x3, testGraphProcessing, Filter_Arg,
     SOBEL_PARAMETERS
 )
 {
     vx_context context = context_->vx_context_;
     vx_image src_image = 0, dst_x_image = 0, dst_y_image = 0;
     vx_graph graph = 0;
     vx_node node = 0;

     CT_Image src = NULL, dst_x = NULL, dst_y = NULL;
     vx_border_t border = arg_->border;

     ASSERT_NO_FAILURE(src = arg_->generator(arg_->fileName, arg_->width, arg_->height));

     ASSERT_VX_OBJECT(src_image = ct_image_to_vx_image(src, context), VX_TYPE_IMAGE);

     dst_x_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
     ASSERT_VX_OBJECT(dst_x_image, VX_TYPE_IMAGE);

     dst_y_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
     ASSERT_VX_OBJECT(dst_y_image, VX_TYPE_IMAGE);

     graph = vxCreateGraph(context);
     ASSERT_VX_OBJECT(graph, VX_TYPE_GRAPH);

     node = vxSobel3x3Node(graph, src_image, dst_x_image, dst_y_image);
     ASSERT_VX_OBJECT(node, VX_TYPE_NODE);

     VX_CALL(vxSetNodeAttribute(node, VX_NODE_BORDER, &border, sizeof(border)));

     VX_CALL(vxVerifyGraph(graph));
     VX_CALL(vxProcessGraph(graph));

     ASSERT_NO_FAILURE(dst_x = ct_image_from_vx_image(dst_x_image));
     ASSERT_NO_FAILURE(dst_y = ct_image_from_vx_image(dst_y_image));

     ASSERT_NO_FAILURE(sobel3x3_check(src, dst_x, dst_y, border));

     VX_CALL(vxReleaseNode(&node));
     VX_CALL(vxReleaseGraph(&graph));

     ASSERT(node == 0);
     ASSERT(graph == 0);

     VX_CALL(vxReleaseImage(&dst_x_image));
     VX_CALL(vxReleaseImage(&dst_y_image));
     VX_CALL(vxReleaseImage(&src_image));

     ASSERT(dst_x_image == 0);
     ASSERT(dst_y_image == 0);
     ASSERT(src_image == 0);
 }

 TEST_WITH_ARG(Sobel3x3, testImmediateProcessing, Filter_Arg,
     SOBEL_PARAMETERS
 )
 {
     vx_context context = context_->vx_context_;
     vx_image src_image = 0, dst_x_image = 0, dst_y_image = 0;

     CT_Image src = NULL, dst_x = NULL, dst_y = NULL;
     vx_border_t border = arg_->border;

     ASSERT_NO_FAILURE(src = arg_->generator(arg_->fileName, arg_->width, arg_->height));

     ASSERT_VX_OBJECT(src_image = ct_image_to_vx_image(src, context), VX_TYPE_IMAGE);

     dst_x_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
     ASSERT_VX_OBJECT(dst_x_image, VX_TYPE_IMAGE);

     dst_y_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
     ASSERT_VX_OBJECT(dst_y_image, VX_TYPE_IMAGE);

     VX_CALL(vxSetContextAttribute(context, VX_CONTEXT_IMMEDIATE_BORDER, &border, sizeof(border)));

     VX_CALL(vxuSobel3x3(context, src_image, dst_x_image, dst_y_image));

     ASSERT_NO_FAILURE(dst_x = ct_image_from_vx_image(dst_x_image));
     ASSERT_NO_FAILURE(dst_y = ct_image_from_vx_image(dst_y_image));

     ASSERT_NO_FAILURE(sobel3x3_check(src, dst_x, dst_y, border));

     VX_CALL(vxReleaseImage(&dst_x_image));
     VX_CALL(vxReleaseImage(&dst_y_image));
     VX_CALL(vxReleaseImage(&src_image));

     ASSERT(dst_x_image == 0);
     ASSERT(dst_y_image == 0);
     ASSERT(src_image == 0);
 }

 TESTCASE_TESTS(Sobel3x3, testNodeCreation, testGraphProcessing, testImmediateProcessing)
	/*

	* Copyright (c) 2012-2017 The Khronos Group Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "test_engine/test.h"
	#include <VX/vx.h>
	#include <VX/vxu.h>
	#include "shared_functions.h"


	TESTCASE(Sobel3x3, CT_VXContext, ct_setup_vx_context, 0)


	TEST(Sobel3x3, testNodeCreation)
	{
	vx_context context = context_->vx_context_;
	vx_image src_image = 0, dst_x_image = 0, dst_y_image;
	vx_graph graph = 0;
	vx_node node = 0;

	ASSERT_VX_OBJECT(src_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_U8), VX_TYPE_IMAGE);

	ASSERT_VX_OBJECT(dst_x_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_S16), VX_TYPE_IMAGE);

	ASSERT_VX_OBJECT(dst_y_image = vxCreateImage(context, 128, 128, VX_DF_IMAGE_S16), VX_TYPE_IMAGE);

	ASSERT_VX_OBJECT(graph = vxCreateGraph(context), VX_TYPE_GRAPH);

	ASSERT_VX_OBJECT(node = vxSobel3x3Node(graph, src_image, dst_x_image, dst_y_image), VX_TYPE_NODE);

	VX_CALL(vxReleaseNode(&node));
	VX_CALL(vxReleaseGraph(&graph));
	VX_CALL(vxReleaseImage(&dst_x_image));
	VX_CALL(vxReleaseImage(&dst_y_image));
	VX_CALL(vxReleaseImage(&src_image));

	ASSERT(node == 0);
	ASSERT(graph == 0);
	ASSERT(dst_x_image == 0);
	ASSERT(dst_y_image == 0);
	ASSERT(src_image == 0);
	}


	// Generate input to cover these requirements:
	// There should be a image with randomly generated pixel intensities.
	static CT_Image sobel3x3_generate_random(const char* fileName, int width, int height)
	{
	CT_Image image;

	ASSERT_NO_FAILURE_(return 0,
	image = ct_allocate_ct_image_random(width, height, VX_DF_IMAGE_U8, &CT()->seed_, 0, 256));

	return image;
	}

	static CT_Image sobel3x3_read_image(const char* fileName, int width, int height)
	{
	CT_Image image = NULL;
	ASSERT_(return 0, width == 0 && height == 0);
	image = ct_read_image(fileName, 1);
	ASSERT_(return 0, image);
	ASSERT_(return 0, image->format == VX_DF_IMAGE_U8);
	return image;
	}

	static int16_t sobel_x_get(int32_t *values)
	{
	int32_t res = (-values[0]) + (values[2]) +
	(-values[3] * 2) + (values[5] * 2) +
	(-values[6]) + (values[8]);
	return (int16_t)res;
	}

	static int16_t sobel_y_get(int32_t *values)
	{
	int32_t res = (-values[0]) + (values[6]) +
	(-values[1] * 2) + (values[7] * 2) +
	(-values[2]) + (values[8]);
	return (int16_t)res;
	}

	static void sobel3x3_calculate(CT_Image src, uint32_t x, uint32_t y, int16_t sobel_x, int16_t sobel_y)
	{
	int32_t values[9] = {
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y - 1),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y - 1),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y - 1),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y - 0),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y - 0),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y - 0),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x - 1, y + 1),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 0, y + 1),
	(int32_t)*CT_IMAGE_DATA_PTR_8U(src, x + 1, y + 1)
	};
	*sobel_x = sobel_x_get(values);
	*sobel_y = sobel_y_get(values);
	}

	static void sobel3x3_calculate_replicate(CT_Image src, uint32_t x_, uint32_t y_, int16_t sobel_x, int16_t sobel_y)
	{
	int32_t x = (int)x_;
	int32_t y = (int)y_;
	int32_t values[9] = {
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y - 1),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y - 1),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y - 1),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y - 0),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y - 0),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y - 0),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x - 1, y + 1),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 0, y + 1),
	(int32_t)CT_IMAGE_DATA_REPLICATE_8U(src, x + 1, y + 1)
	};
	*sobel_x = sobel_x_get(values);
	*sobel_y = sobel_y_get(values);
	}

	static void sobel3x3_calculate_constant(CT_Image src, uint32_t x_, uint32_t y_, vx_uint32 constant_value, int16_t sobel_x, int16_t sobel_y)
	{
	int32_t x = (int)x_;
	int32_t y = (int)y_;
	int32_t values[9] = {
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y - 1, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y - 1, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y - 1, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y - 0, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y - 0, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y - 0, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x - 1, y + 1, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 0, y + 1, constant_value),
	(int32_t)CT_IMAGE_DATA_CONSTANT_8U(src, x + 1, y + 1, constant_value)
	};
	*sobel_x = sobel_x_get(values);
	*sobel_y = sobel_y_get(values);
	}


	void sobel3x3_create_reference_image(CT_Image src, vx_border_t border, CT_Image p_dst_x, CT_Image p_dst_y)
	{
	CT_Image dst_x = NULL, dst_y = NULL;

	CT_ASSERT(src->format == VX_DF_IMAGE_U8);

	dst_x = ct_allocate_image(src->width, src->height, VX_DF_IMAGE_S16);
	dst_y = ct_allocate_image(src->width, src->height, VX_DF_IMAGE_S16);

	if (border.mode == VX_BORDER_UNDEFINED)
	{
	CT_FILL_IMAGE_16S(return, dst_x,
	if (x >= 1 && y >= 1 && x < src->width - 1 && y < src->height - 1)
	{
	int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
	sobel3x3_calculate(src, x, y, dst_data, dst_y_data);
	});
	}
	else if (border.mode == VX_BORDER_REPLICATE)
	{
	CT_FILL_IMAGE_16S(return, dst_x,
	{
	int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
	sobel3x3_calculate_replicate(src, x, y, dst_data, dst_y_data);
	});
	}
	else if (border.mode == VX_BORDER_CONSTANT)
	{
	vx_uint32 constant_value = border.constant_value.U32;
	CT_FILL_IMAGE_16S(return, dst_x,
	{
	int16_t* dst_y_data = CT_IMAGE_DATA_PTR_16S(dst_y, x, y);
	sobel3x3_calculate_constant(src, x, y, constant_value, dst_data, dst_y_data);
	});
	}
	else
	{
	ASSERT_(return, 0);
	}

	*p_dst_x = dst_x;
	*p_dst_y = dst_y;
	}


	static void sobel3x3_check(CT_Image src, CT_Image dst_x, CT_Image dst_y, vx_border_t border)
	{
	CT_Image dst_x_ref = NULL, dst_y_ref = NULL;

	ASSERT(src && dst_x && dst_y);

	ASSERT_NO_FAILURE(sobel3x3_create_reference_image(src, border, &dst_x_ref, &dst_y_ref));

	ASSERT_NO_FAILURE(
	if (border.mode == VX_BORDER_UNDEFINED)
	{
	ct_adjust_roi(dst_x, 1, 1, 1, 1);
	ct_adjust_roi(dst_x_ref, 1, 1, 1, 1);
	ct_adjust_roi(dst_y, 1, 1, 1, 1);
	ct_adjust_roi(dst_y_ref, 1, 1, 1, 1);
	}
	);

	EXPECT_EQ_CTIMAGE(dst_x_ref, dst_x);
	EXPECT_EQ_CTIMAGE(dst_y_ref, dst_y);
	#if 0
	if (CT_HasFailure())
	{
	printf("=== SRC ===\n");
	ct_dump_image_info(src);
	printf("=== DST X ===\n");
	ct_dump_image_info(dst_x);
	printf("=== EXPECTED X ===\n");
	ct_dump_image_info(dst_x_ref);
	printf("=== DST Y ===\n");
	ct_dump_image_info(dst_y);
	printf("=== EXPECTED Y ===\n");
	ct_dump_image_info(dst_y_ref);
	}
	#endif
	}

	typedef struct {
	const char* testName;
	CT_Image (generator)(const char fileName, int width, int height);
	const char* fileName;
	vx_border_t border;
	int width, height;
	} Filter_Arg;

	#define SOBEL_PARAMETERS \
	CT_GENERATE_PARAMETERS("randomInput", ADD_VX_BORDERS_REQUIRE_UNDEFINED_ONLY, ADD_SIZE_SMALL_SET, ARG, sobel3x3_generate_random, NULL), \
	CT_GENERATE_PARAMETERS("lena", ADD_VX_BORDERS_REQUIRE_UNDEFINED_ONLY, ADD_SIZE_NONE, ARG, sobel3x3_read_image, "lena.bmp")

	TEST_WITH_ARG(Sobel3x3, testGraphProcessing, Filter_Arg,
	SOBEL_PARAMETERS
	)
	{
	vx_context context = context_->vx_context_;
	vx_image src_image = 0, dst_x_image = 0, dst_y_image = 0;
	vx_graph graph = 0;
	vx_node node = 0;

	CT_Image src = NULL, dst_x = NULL, dst_y = NULL;
	vx_border_t border = arg_->border;

	ASSERT_NO_FAILURE(src = arg_->generator(arg_->fileName, arg_->width, arg_->height));

	ASSERT_VX_OBJECT(src_image = ct_image_to_vx_image(src, context), VX_TYPE_IMAGE);

	dst_x_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
	ASSERT_VX_OBJECT(dst_x_image, VX_TYPE_IMAGE);

	dst_y_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
	ASSERT_VX_OBJECT(dst_y_image, VX_TYPE_IMAGE);

	graph = vxCreateGraph(context);
	ASSERT_VX_OBJECT(graph, VX_TYPE_GRAPH);

	node = vxSobel3x3Node(graph, src_image, dst_x_image, dst_y_image);
	ASSERT_VX_OBJECT(node, VX_TYPE_NODE);

	VX_CALL(vxSetNodeAttribute(node, VX_NODE_BORDER, &border, sizeof(border)));

	VX_CALL(vxVerifyGraph(graph));
	VX_CALL(vxProcessGraph(graph));

	ASSERT_NO_FAILURE(dst_x = ct_image_from_vx_image(dst_x_image));
	ASSERT_NO_FAILURE(dst_y = ct_image_from_vx_image(dst_y_image));

	ASSERT_NO_FAILURE(sobel3x3_check(src, dst_x, dst_y, border));

	VX_CALL(vxReleaseNode(&node));
	VX_CALL(vxReleaseGraph(&graph));

	ASSERT(node == 0);
	ASSERT(graph == 0);

	VX_CALL(vxReleaseImage(&dst_x_image));
	VX_CALL(vxReleaseImage(&dst_y_image));
	VX_CALL(vxReleaseImage(&src_image));

	ASSERT(dst_x_image == 0);
	ASSERT(dst_y_image == 0);
	ASSERT(src_image == 0);
	}

	TEST_WITH_ARG(Sobel3x3, testImmediateProcessing, Filter_Arg,
	SOBEL_PARAMETERS
	)
	{
	vx_context context = context_->vx_context_;
	vx_image src_image = 0, dst_x_image = 0, dst_y_image = 0;

	CT_Image src = NULL, dst_x = NULL, dst_y = NULL;
	vx_border_t border = arg_->border;

	ASSERT_NO_FAILURE(src = arg_->generator(arg_->fileName, arg_->width, arg_->height));

	ASSERT_VX_OBJECT(src_image = ct_image_to_vx_image(src, context), VX_TYPE_IMAGE);

	dst_x_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
	ASSERT_VX_OBJECT(dst_x_image, VX_TYPE_IMAGE);

	dst_y_image = ct_create_similar_image_with_format(src_image, VX_DF_IMAGE_S16);
	ASSERT_VX_OBJECT(dst_y_image, VX_TYPE_IMAGE);

	VX_CALL(vxSetContextAttribute(context, VX_CONTEXT_IMMEDIATE_BORDER, &border, sizeof(border)));

	VX_CALL(vxuSobel3x3(context, src_image, dst_x_image, dst_y_image));

	ASSERT_NO_FAILURE(dst_x = ct_image_from_vx_image(dst_x_image));
	ASSERT_NO_FAILURE(dst_y = ct_image_from_vx_image(dst_y_image));

	ASSERT_NO_FAILURE(sobel3x3_check(src, dst_x, dst_y, border));

	VX_CALL(vxReleaseImage(&dst_x_image));
	VX_CALL(vxReleaseImage(&dst_y_image));
	VX_CALL(vxReleaseImage(&src_image));

	ASSERT(dst_x_image == 0);
	ASSERT(dst_y_image == 0);
	ASSERT(src_image == 0);
	}

	TESTCASE_TESTS(Sobel3x3, testNodeCreation, testGraphProcessing, testImmediateProcessing)