| /* |
| * Copyright (c) 2019 Arm Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * 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 "helpers.h" |
| |
| /** Generate all the region of interests based on the image size and the anchors passed in. For each element (x,y) of the |
| * grid, it will generate NUM_ANCHORS rois, given by shifting the grid position to match the anchor. |
| * |
| * @attention The following variables must be passed at compile time: |
| * -# -DDATA_TYPE= Tensor data type. Supported data types: F16/F32 |
| * -# -DHEIGHT= Height of the feature map on which this kernel is applied |
| * -# -DWIDTH= Width of the feature map on which this kernel is applied |
| * -# -DNUM_ANCHORS= Number of anchors to be used to generate the rois per each pixel |
| * -# -DSTRIDE= Stride to be applied at each different pixel position (i.e., x_range = (1:WIDTH)*STRIDE and y_range = (1:HEIGHT)*STRIDE |
| * -# -DNUM_ROI_FIELDS= Number of fields used to represent a roi |
| * |
| * @param[in] anchors_ptr Pointer to the anchors tensor. Supported data types: F16/F32 |
| * @param[in] anchors_stride_x Stride of the anchors tensor in X dimension (in bytes) |
| * @param[in] anchors_step_x anchors_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] anchors_stride_y Stride of the anchors tensor in Y dimension (in bytes) |
| * @param[in] anchors_step_y anchors_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] anchors_stride_z Stride of the source tensor in Z dimension (in bytes) |
| * @param[in] anchors_step_z anchors_stride_z * number of elements along Z processed per workitem(in bytes) |
| * @param[in] anchors_offset_first_element_in_bytes The offset of the first element in the boxes tensor |
| * @param[out] rois_ptr Pointer to the rois. Supported data types: same as @p in_ptr |
| * @param[out] rois_stride_x Stride of the rois in X dimension (in bytes) |
| * @param[out] rois_step_x pred_boxes_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[out] rois_stride_y Stride of the rois in Y dimension (in bytes) |
| * @param[out] rois_step_y pred_boxes_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[out] rois_stride_z Stride of the rois in Z dimension (in bytes) |
| * @param[out] rois_step_z pred_boxes_stride_z * number of elements along Z processed per workitem(in bytes) |
| * @param[out] rois_offset_first_element_in_bytes The offset of the first element in the rois |
| */ |
| #if defined(DATA_TYPE) && defined(WIDTH) && defined(HEIGHT) && defined(NUM_ANCHORS) && defined(STRIDE) && defined(NUM_ROI_FIELDS) |
| __kernel void generate_proposals_compute_all_anchors( |
| VECTOR_DECLARATION(anchors), |
| VECTOR_DECLARATION(rois)) |
| { |
| Vector anchors = CONVERT_TO_VECTOR_STRUCT_NO_STEP(anchors); |
| Vector rois = CONVERT_TO_VECTOR_STRUCT(rois); |
| |
| const size_t idx = get_global_id(0); |
| // Find the index of the anchor |
| const size_t anchor_idx = idx % NUM_ANCHORS; |
| |
| // Find which shift is this thread using |
| const size_t shift_idx = idx / NUM_ANCHORS; |
| |
| // Compute the shift on the X and Y direction (the shift depends exclusively by the index thread id) |
| const DATA_TYPE |
| shift_x = (DATA_TYPE)(shift_idx % WIDTH) * STRIDE; |
| const DATA_TYPE |
| shift_y = (DATA_TYPE)(shift_idx / WIDTH) * STRIDE; |
| |
| const VEC_DATA_TYPE(DATA_TYPE, NUM_ROI_FIELDS) |
| shift = (VEC_DATA_TYPE(DATA_TYPE, NUM_ROI_FIELDS))(shift_x, shift_y, shift_x, shift_y); |
| |
| // Read the given anchor |
| const VEC_DATA_TYPE(DATA_TYPE, NUM_ROI_FIELDS) |
| anchor = vload4(0, (__global DATA_TYPE *)vector_offset(&anchors, anchor_idx * NUM_ROI_FIELDS)); |
| |
| // Apply the shift to the anchor |
| const VEC_DATA_TYPE(DATA_TYPE, NUM_ROI_FIELDS) |
| shifted_anchor = anchor + shift; |
| |
| vstore4(shifted_anchor, 0, (__global DATA_TYPE *)rois.ptr); |
| } |
| #endif //defined(DATA_TYPE) && defined(WIDTH) && defined(HEIGHT) && defined(NUM_ANCHORS) && defined(STRIDE) && defined(NUM_ROI_FIELDS) |