/* 
Copyright (c) 2015 Advanced Micro Devices, Inc. All rights reserved.
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/


#include"internal_publishKernels.h"

/*! \brief ***********************************************************************************************************
Input parameter validator.

This function checks all the inputs to see if they are of the correct data type and is passing a valid argument.
The input validator is a required function to create any node.

param [in] node  -->The handle to the node.
param [in] index -->The index of the parameter to validate.
*************************************************************************************************************/
static vx_status VX_CALLBACK CV_Blur_InputValidator(vx_node node, vx_uint32 index)
{
	vx_status status = VX_SUCCESS;
	vx_parameter param = vxGetParameterByIndex(node, index);

	if (index == 0)
	{
		vx_image image;
		vx_df_image df_image = VX_DF_IMAGE_VIRT;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &image, sizeof(vx_image)));
		STATUS_ERROR_CHECK(vxQueryImage(image, VX_IMAGE_ATTRIBUTE_FORMAT, &df_image, sizeof(df_image)));
		if (df_image != VX_DF_IMAGE_U8)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseImage(&image);
	}

	else if (index == 1)
	{
		vx_image image;
		vx_df_image df_image = VX_DF_IMAGE_VIRT;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &image, sizeof(vx_image)));
		STATUS_ERROR_CHECK(vxQueryImage(image, VX_IMAGE_ATTRIBUTE_FORMAT, &df_image, sizeof(df_image)));
		if (df_image != VX_DF_IMAGE_U8)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseImage(&image);
	}

	else if (index == 2)
	{
		vx_scalar scalar = 0; vx_enum type = 0;	vx_int32 value = 0;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &scalar, sizeof(scalar)));
		STATUS_ERROR_CHECK(vxQueryScalar(scalar, VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof(type)));
		STATUS_ERROR_CHECK(vxReadScalarValue(scalar, &value));
		if (value < 0 || type != VX_TYPE_INT32)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseScalar(&scalar);
	}

	else if (index == 3)
	{
		vx_scalar scalar = 0; vx_enum type = 0;	vx_int32 value = 0;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &scalar, sizeof(scalar)));
		STATUS_ERROR_CHECK(vxQueryScalar(scalar, VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof(type)));
		STATUS_ERROR_CHECK(vxReadScalarValue(scalar, &value));
		if (value < 0 || type != VX_TYPE_INT32)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseScalar(&scalar);
	}

	else if (index == 4)
	{
		vx_scalar scalar = 0; vx_enum type = 0;	vx_int32 value = 0;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &scalar, sizeof(scalar)));
		STATUS_ERROR_CHECK(vxQueryScalar(scalar, VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof(type)));
		STATUS_ERROR_CHECK(vxReadScalarValue(scalar, &value));
		if (value < -1 || type != VX_TYPE_INT32)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseScalar(&scalar);
	}

	else if (index == 5)
	{
		vx_scalar scalar = 0; vx_enum type = 0;	vx_int32 value = 0;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &scalar, sizeof(scalar)));
		STATUS_ERROR_CHECK(vxQueryScalar(scalar, VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof(type)));
		STATUS_ERROR_CHECK(vxReadScalarValue(scalar, &value));
		if (value < -1 || type != VX_TYPE_INT32)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseScalar(&scalar);
	}

	else if (index == 6)
	{
		vx_scalar scalar = 0; vx_enum type = 0;	vx_int32 value = 0;
		STATUS_ERROR_CHECK(vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &scalar, sizeof(scalar)));
		STATUS_ERROR_CHECK(vxQueryScalar(scalar, VX_SCALAR_ATTRIBUTE_TYPE, &type, sizeof(type)));
		STATUS_ERROR_CHECK(vxReadScalarValue(scalar, &value));
		if (value < 0 || type != VX_TYPE_INT32)
			status = VX_ERROR_INVALID_VALUE;
		vxReleaseScalar(&scalar);
	}

	vxReleaseParameter(&param);
	return status;
}

/*! \brief ***********************************************************************************************************
Output parameter validator.

This function checks all the outputs to see if they are of the correct data type and has the required parameters set 
to return the correct output.
The Output validator is a required function to create any node.

param [in] node  -->The handle to the node.
param [in] index -->The index of the parameter to validate.
param [in] meta  -->The meta data for the output is set.
*************************************************************************************************************/
static vx_status VX_CALLBACK CV_Blur_OutputValidator(vx_node node, vx_uint32 index, vx_meta_format meta)
{
	vx_status status = VX_SUCCESS;
	if (index == 1)
	{
		vx_parameter output_param = vxGetParameterByIndex(node, 1);
		vx_image output; vx_uint32 width = 0, height = 0; vx_df_image format = VX_DF_IMAGE_VIRT;

		STATUS_ERROR_CHECK(vxQueryParameter(output_param, VX_PARAMETER_ATTRIBUTE_REF, &output, sizeof(vx_image)));
		STATUS_ERROR_CHECK(vxQueryImage(output, VX_IMAGE_ATTRIBUTE_FORMAT, &format, sizeof(format)));
		STATUS_ERROR_CHECK(vxQueryImage(output, VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof(width)));
		STATUS_ERROR_CHECK(vxQueryImage(output, VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof(height)));

		if (format != VX_DF_IMAGE_U8)
			status = VX_ERROR_INVALID_VALUE;

		STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(meta, VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof(width)));
		STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(meta, VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof(height)));
		STATUS_ERROR_CHECK(vxSetMetaFormatAttribute(meta, VX_IMAGE_ATTRIBUTE_FORMAT, &format, sizeof(format)));

		vxReleaseImage(&output);
		vxReleaseParameter(&output_param);
	}
	return status;
}

/*! \brief ***********************************************************************************************************
Execution Kernel

This function is the exection kernel of the node, it gets the inputs for the i/p validator and returns to output

param [in] node       -->The handle to the node.
param [in] parameters -->The index of the parameter. 
param [in] num        -->Number of parameters.
*************************************************************************************************************/
static vx_status VX_CALLBACK CV_Blur_Kernel(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
	vx_status status = VX_SUCCESS;

	vx_image image_in = (vx_image) parameters[0];
	vx_image image_out = (vx_image) parameters[1];
	vx_scalar S_width = (vx_scalar) parameters[2];
	vx_scalar S_height = (vx_scalar) parameters[3];
	vx_scalar A_X = (vx_scalar) parameters[4];
	vx_scalar A_Y = (vx_scalar) parameters[5];
	vx_scalar BORDER = (vx_scalar) parameters[6];

	Mat *mat, bl;
	int W, H, a_x, a_y, border;
	vx_int32 value = 0;

	//Extracting Values from the Scalar into Ksize and Ddepth
	STATUS_ERROR_CHECK(vxReadScalarValue(S_width, &value));W = value;
	STATUS_ERROR_CHECK(vxReadScalarValue(S_height, &value));H = value;
	STATUS_ERROR_CHECK(vxReadScalarValue(A_X, &value));a_x = value;
	STATUS_ERROR_CHECK(vxReadScalarValue(A_Y, &value));a_y = value;
	STATUS_ERROR_CHECK(vxReadScalarValue(BORDER, &value));border = value;

	//Converting VX Image to OpenCV Mat
	STATUS_ERROR_CHECK(match_vx_image_parameters(image_in, image_out));
	STATUS_ERROR_CHECK(VX_to_CV_Image(&mat, image_in));

	//Compute using OpenCV
	Point point;
	point.x = a_x;
	point.y = a_y;
	cv::blur(*mat, bl, Size(W, H), point, border);

	//Converting OpenCV Mat into VX Image
	STATUS_ERROR_CHECK(CV_to_VX_Image(image_out, &bl));

	return status;
}

/*! \brief ***********************************************************************************************************
Initializer function.

This function is an optional function, if the inputs are needed to be intitialized. This function can be ignored and
a nullptr can be passed to vxAddKernel

param [in] node       -->The handle to the node.
param [in] parameters -->The index of the parameter.
param [in] num        -->Number of parameters.
*************************************************************************************************************/
static vx_status VX_CALLBACK CV_Blur_Initialize(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
	/* Requires no initialization of memory or resources */
	return VX_SUCCESS;
}

/*! \brief ***********************************************************************************************************
De-Initializer function.

This function is an optional function, if the outputs are needed to be de-intitialized. This function can be ignored and
a nullptr can be passed to vxAddKernel

param [in] node       -->The handle to the node.
param [in] parameters -->The index of the parameter.
param [in] num        -->Number of parameters.
*************************************************************************************************************/
static vx_status VX_CALLBACK CV_Blur_Deinitialize(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
	/* Requires no de-initialization of memory or resources */
	return VX_SUCCESS;
}

/*! \brief***************************************************************************************************
Function to Register the Kernel for Publish
*************************************************************************************************************/
vx_status CV_blur_Register(vx_context context)
{
	vx_status status = VX_SUCCESS;
	vx_kernel Kernel = vxAddKernel(context,
		"org.opencv.blur",
		VX_KERNEL_OPENCV_BLUR,
		CV_Blur_Kernel,
		7,
		CV_Blur_InputValidator,
		CV_Blur_OutputValidator,
		CV_Blur_Initialize,
		CV_Blur_Deinitialize);

	if (Kernel)
	{
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 0, VX_INPUT, VX_TYPE_IMAGE, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 1, VX_OUTPUT, VX_TYPE_IMAGE, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 2, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 3, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 4, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 5, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxAddParameterToKernel(Kernel, 6, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
		PARAM_ERROR_CHECK(vxFinalizeKernel(Kernel));
	}

	if (status != VX_SUCCESS)
	{
	exit:	vxRemoveKernel(Kernel); return VX_FAILURE;
	}

	return status;
}