| /* |
| * Copyright (c) 2017 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" |
| |
| #if defined(POOL_AVG) |
| #define POOL_OP(x, y) ((x) + (y)) |
| #else /* defined(POOL_AVG) */ |
| #define POOL_OP(x, y) (max((x), (y))) |
| #endif /* defined(POOL_AVG) */ |
| |
| #define DIV_OP(x, y) (x * (1.f / y)) |
| |
| #if defined(POOL_L2) |
| #error "L2 pooling is not supported" |
| #endif /* defined(POOL_L2) */ |
| |
| int calculate_avg_scale(const int pool_size, const int upper_bound_w, const int upper_bound_h, |
| const int pad_x, const int pad_y, const int stride_x, const int stride_y) |
| { |
| int start_x = get_global_id(0) * stride_x - pad_x; |
| int start_y = get_global_id(1) * stride_y - pad_y; |
| const int end_x = min(start_x + pool_size, upper_bound_w); |
| const int end_y = min(start_y + pool_size, upper_bound_h); |
| #if defined(EXCLUDE_PADDING) |
| start_x = max(0, start_x); |
| start_y = max(0, start_y); |
| #endif /* defined(EXCLUDE_PADDING) */ |
| return ((end_y - start_y) * (end_x - start_x)); |
| } |
| |
| /** Performs a pooling function of pool size equal to N |
| * |
| * @note Pool size must be passed using -DPOOL_SIZE e.g. -DPOOL_SIZE=13; |
| * @note In case of average pooling the following information must be passed at compile time: |
| * -DPOOL_AVG must be provided otherwise max pooling will be performed. |
| * -DMAX_WIDTH and -DMAX_HEIGHT which are the maximum accessible indeces in x and y dimensions (width + pad) |
| * -DSTRIDE_X and -DSTRIDE_Y which are the steps of the window along the x and y directions |
| * -DPAD_X and -DPAD_Y which are the pooling paddings in x and y dimension |
| * |
| * @param[in] input_ptr Pointer to the source image. Supported data types: QASYMM8 |
| * @param[in] input_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] input_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) |
| * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) |
| * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source image |
| * @param[out] output_ptr Pointer to the destination image. Supported data types: same as @p input_ptr |
| * @param[in] output_stride_x Stride of the destination image in X dimension (in bytes) |
| * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] output_stride_y Stride of the destination image in Y dimension (in bytes) |
| * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) |
| * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) |
| * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination image |
| */ |
| __kernel void pooling_layer_N_quantized( |
| TENSOR3D_DECLARATION(input), |
| TENSOR3D_DECLARATION(output)) |
| { |
| // Get pixels pointer |
| Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); |
| Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); |
| |
| int8 vdata = 0; |
| int sdata = 0; |
| |
| // Load data |
| for(int y = 0; y < POOL_SIZE; y++) |
| { |
| int x = 0; |
| for(; x <= ((int)POOL_SIZE - 8); x += 8) |
| { |
| uchar8 data = vload8(0, (__global uchar *)tensor3D_offset(&input, x, y, 0)); |
| int8 data0 = convert_int8(data); |
| vdata = POOL_OP(vdata, data0); |
| } |
| |
| // Leftover |
| for(; x < (int)POOL_SIZE; ++x) |
| { |
| uchar data = *((__global uchar *)tensor3D_offset(&input, x, y, 0)); |
| int data0 = convert_int(data); |
| sdata = POOL_OP(sdata, data0); |
| } |
| } |
| |
| // Reduce result |
| int4 reduce4 = POOL_OP(vdata.s0123, vdata.s4567); |
| int2 reduce2 = POOL_OP(reduce4.s01, reduce4.s23); |
| int res = POOL_OP(reduce2.s0, reduce2.s1); |
| res = POOL_OP(res, sdata); |
| |
| #if defined(POOL_AVG) |
| res = DIV_OP(res, calculate_avg_scale(POOL_SIZE, MAX_WIDTH, MAX_HEIGHT, PAD_X, PAD_Y, STRIDE_X, STRIDE_Y)); |
| #endif /* defined(POOL_AVG) */ |
| |
| // Store result |
| *(__global uchar *)output.ptr = convert_uchar(res); |
| } |