/*
Copyright (c) 2017 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 "kernels.h"

static vx_status VX_CALLBACK validateROIPoolingLayer(vx_node node, const vx_reference parameters[], vx_uint32 num, vx_meta_format metas[])
{
    // check scalar type
    vx_enum type;
    ERROR_CHECK_STATUS(vxQueryScalar((vx_scalar)parameters[2], VX_SCALAR_TYPE, &type, sizeof(type)));
    if(type != VX_TYPE_NN_ROI_POOL_PARAMS) return ERRMSG(VX_ERROR_INVALID_TYPE, "validate: ROI_POOL: #2 type=%d (must be ROI PARAMS)\n", type);

    // check tensor dimensions
    vx_size num_dims;
    vx_size input_dims[4], rois_dims[4], output_dims[4];
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_NUMBER_OF_DIMS, &num_dims, sizeof(num_dims)));
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[0], VX_TENSOR_DATA_TYPE, &type, sizeof(type)));
    if (num_dims != 4) return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: ROI-POOL: #0 num_dims=%ld (must be 4)\n", num_dims);
    if(type != VX_TYPE_FLOAT32) return ERRMSG(VX_ERROR_INVALID_TYPE, "validate: ROI-POOL: #0 type=%d (must be float)\n", type);
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_NUMBER_OF_DIMS, &num_dims, sizeof(num_dims)));
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DATA_TYPE, &type, sizeof(type)));
    if (num_dims != 4) return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: ROI-POOL: #1 num_dims=%ld (must be 4)\n", num_dims);
    if(type != VX_TYPE_FLOAT32) return ERRMSG(VX_ERROR_INVALID_TYPE, "validate: ROI-POOL: #1 type=%d (must be float)\n", type);
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[1], VX_TENSOR_DIMS, rois_dims, sizeof(rois_dims)));
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[3], VX_TENSOR_NUMBER_OF_DIMS, &num_dims, sizeof(num_dims)));
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[3], VX_TENSOR_DATA_TYPE, &type, sizeof(type)));
    if (num_dims != 4) return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: ROI-POOL: #3 num_dims=%ld (must be 4)\n", num_dims);
    if(type != VX_TYPE_FLOAT32) return ERRMSG(VX_ERROR_INVALID_TYPE, "validate: ROI-POOL: #3 type=%d (must be float)\n", type);
    ERROR_CHECK_STATUS(vxQueryTensor((vx_tensor)parameters[3], VX_TENSOR_DIMS, output_dims, sizeof(output_dims)));
    if(output_dims[3] != input_dims[3])
        return ERRMSG(VX_ERROR_INVALID_DIMENSION, "validate: ROI-POOL: dims input[%ld,%ld,%ld,%ld] output[%ld,%ld,%ld,%ld]\n",
                    input_dims[0], input_dims[1], input_dims[2], input_dims[3],
                    output_dims[0], output_dims[1], output_dims[2], output_dims[3]);

    // output tensor configuration
    type = VX_TYPE_FLOAT32;
    num_dims = 4;
    ERROR_CHECK_STATUS(vxSetMetaFormatAttribute(metas[3], VX_TENSOR_DATA_TYPE, &type, sizeof(type)));
    ERROR_CHECK_STATUS(vxSetMetaFormatAttribute(metas[3], VX_TENSOR_NUMBER_OF_DIMS, &num_dims, sizeof(num_dims)));
    ERROR_CHECK_STATUS(vxSetMetaFormatAttribute(metas[3], VX_TENSOR_DIMS, output_dims, sizeof(output_dims)));
    return VX_SUCCESS;
}

static vx_status VX_CALLBACK processROIPoolingLayer(vx_node node, const vx_reference * parameters, vx_uint32 num)
{
    return VX_ERROR_NOT_IMPLEMENTED;
}

static vx_status VX_CALLBACK initializeROIPoolingLayer(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
    return VX_ERROR_NOT_IMPLEMENTED;
}

static vx_status VX_CALLBACK uninitializeROIPoolingLayer(vx_node node, const vx_reference *parameters, vx_uint32 num)
{
    return VX_ERROR_NOT_IMPLEMENTED;
}

vx_status publishROIPoolingLayer(vx_context context)
{
    // add kernel to the context with callbacks
    vx_kernel kernel = vxAddUserKernel(context, "org.khronos.nn_extension.roi_pooling_layer", VX_KERNEL_ROI_POOLING_LAYER, processROIPoolingLayer, 4, validateROIPoolingLayer, initializeROIPoolingLayer, uninitializeROIPoolingLayer);
    ERROR_CHECK_OBJECT(kernel);

    // set kernel parameters
    ERROR_CHECK_STATUS(vxAddParameterToKernel(kernel, 0, VX_INPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));
    ERROR_CHECK_STATUS(vxAddParameterToKernel(kernel, 1, VX_INPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));
    ERROR_CHECK_STATUS(vxAddParameterToKernel(kernel, 2, VX_INPUT, VX_TYPE_SCALAR, VX_PARAMETER_STATE_REQUIRED));
    ERROR_CHECK_STATUS(vxAddParameterToKernel(kernel, 3, VX_OUTPUT, VX_TYPE_TENSOR, VX_PARAMETER_STATE_REQUIRED));

    // finalize and release kernel object
    ERROR_CHECK_STATUS(vxFinalizeKernel(kernel));
    ERROR_CHECK_STATUS(vxReleaseKernel(&kernel));

    return VX_SUCCESS;
}

VX_API_ENTRY vx_node vxROIPoolingLayer(vx_graph graph, vx_tensor input_data, vx_tensor input_rois,
                                       const vx_nn_roi_pool_params_t *roi_pool_params,vx_size size_of_roi_params, vx_tensor output_arr)
{
    return NULL;
    vx_node node = NULL;
    vx_context context = vxGetContext((vx_reference)graph);
    if(vxGetStatus((vx_reference)context) == VX_SUCCESS) {
        vx_scalar roi_params = vxCreateScalarWithSize(context, VX_TYPE_NN_ROI_POOL_PARAMS, roi_pool_params, size_of_roi_params);
        if(vxGetStatus((vx_reference)roi_params) == VX_SUCCESS) {
            vx_reference params[] = {
                (vx_reference)input_data,
                (vx_reference)input_rois,
                (vx_reference)roi_params,
                (vx_reference)output_arr
            };
            node = createNode(graph, VX_KERNEL_ROI_POOLING_LAYER, params, sizeof(params)/sizeof(params[0]));
        }
        vxReleaseScalar(&roi_params);
    }
    return node;
}