libvision/kernel/opencl/vx_threshold.cpp

/*
 * Copyright (c) 2012-2014 The Khronos Group Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and/or associated documentation files (the
 * "Materials"), to deal in the Materials without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Materials, and to
 * permit persons to whom the Materials are 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 Materials.
 *
 * THE MATERIALS ARE 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
 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

/*!
 * \file
 * \brief The Thresholding Kernel.
 * \author Erik Rainey <erik.rainey@gmail.com>
 */

#include <VX/vx.h>
#include <VX/vx_helper.h>
#include <vxcl_kernel_module.h>

static vx_status VX_CALLBACK vxThresholdInputValidator(vx_node node, vx_uint32 index)
{
    vx_status status = VX_ERROR_INVALID_PARAMETERS;
    if (index == 0)
    {
        vx_parameter param = vxGetParameterByIndex(node, index);
        if (param)
        {
            vx_image input = 0;
            vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &input, sizeof(input));
            if (input)
            {
                vx_df_image format = 0;
                vxQueryImage(input, VX_IMAGE_ATTRIBUTE_FORMAT, &format, sizeof(format));
                if (format == VX_DF_IMAGE_U8)
                {
                    status = VX_SUCCESS;
                }
                else
                {
                    status = VX_ERROR_INVALID_FORMAT;
                }
                vxReleaseImage(&input);
            }
            vxReleaseParameter(&param);
        }
    }
    else if (index == 1)
    {
        vx_parameter param = vxGetParameterByIndex(node, index);
        if (param)
        {
            vx_threshold threshold = 0;
            vxQueryParameter(param, VX_PARAMETER_ATTRIBUTE_REF, &threshold, sizeof(threshold));
            if (threshold)
            {
                vx_enum type = 0;
                vxQueryThreshold(threshold, VX_THRESHOLD_ATTRIBUTE_TYPE, &type, sizeof(type));
                if ((type == VX_THRESHOLD_TYPE_BINARY) ||
                     (type == VX_THRESHOLD_TYPE_RANGE))
                {
                    status = VX_SUCCESS;
                }
                else
                {
                    status = VX_ERROR_INVALID_TYPE;
                }
                vxReleaseThreshold(&threshold);
            }
            vxReleaseParameter(&param);
        }
    }
    return status;
}

static vx_status VX_CALLBACK vxThresholdOutputValidator(vx_node node, vx_uint32 index, vx_meta_format ptr)
{
    vx_status status = VX_ERROR_INVALID_PARAMETERS;
    if (index == 2)
    {
        vx_parameter src_param = vxGetParameterByIndex(node, 0);
        if (src_param)
        {
            vx_image src = 0;
            vxQueryParameter(src_param, VX_PARAMETER_ATTRIBUTE_REF, &src, sizeof(src));
            if (src)
            {
                vx_uint32 width = 0, height = 0;

                vxQueryImage(src, VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof(height));
                vxQueryImage(src, VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof(height));

                /* fill in the meta data with the attributes so that the checker will pass */
                vx_df_image meta_format = VX_DF_IMAGE_U8;
                vxSetMetaFormatAttribute(ptr, VX_IMAGE_ATTRIBUTE_FORMAT, &meta_format, sizeof(meta_format));
                vxSetMetaFormatAttribute(ptr, VX_IMAGE_ATTRIBUTE_WIDTH, &width, sizeof(width));
                vxSetMetaFormatAttribute(ptr, VX_IMAGE_ATTRIBUTE_HEIGHT, &height, sizeof(height));

                status = VX_SUCCESS;
                vxReleaseImage(&src);
            }
            vxReleaseParameter(&src_param);
        }
    }
    return status;
}

static vx_param_description_t threshold_kernel_params[] = {
    {VX_INPUT, VX_TYPE_IMAGE,		VX_PARAMETER_STATE_REQUIRED},
    {VX_INPUT, VX_TYPE_THRESHOLD,   VX_PARAMETER_STATE_REQUIRED},
    {VX_OUTPUT,VX_TYPE_IMAGE,		VX_PARAMETER_STATE_REQUIRED},
};


vx_cl_kernel_description_t threshold_clkernel = {
	{
		VX_KERNEL_THRESHOLD,
		"com.samsung.opencl.threshold",
		NULL,
		threshold_kernel_params, dimof(threshold_kernel_params),
		vxThresholdInputValidator,
		vxThresholdOutputValidator,
        NULL,
        NULL,
	},
	"/system/usr/vxcl/vx_threshold.cl",
	"vx_threshold",
	INIT_PROGRAMS,
	INIT_KERNELS,
	INIT_NUMKERNELS,
	INIT_RETURNS,
	NULL,
};