diff options
| author | Clyne Sullivan <clyne@bitgloo.com> | 2025-01-29 21:34:25 -0500 |
|---|---|---|
| committer | Clyne Sullivan <clyne@bitgloo.com> | 2025-01-29 21:34:25 -0500 |
| commit | 5b81bc8ccbd342b8566d88fc9f17a73aec03b5b6 (patch) | |
| tree | cc57486912cfa74c6440d8b97c28f451ec787d78 /Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c | |
initial commit
Diffstat (limited to 'Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c')
| -rw-r--r-- | Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c b/Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c new file mode 100644 index 0000000..5cd2b1c --- /dev/null +++ b/Drivers/CMSIS/NN/Source/PoolingFunctions/arm_avgpool_s16.c @@ -0,0 +1,128 @@ +/* + * Copyright (C) 2022 Arm Limited or its affiliates. + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the License); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/* ---------------------------------------------------------------------- + * Project: CMSIS NN Library + * Title: arm_avgpool_s16.c + * Description: Pooling function implementations + * + * $Date: 3. February 2022 + * $Revision: V.1.0.1 + * + * Target Processor: Cortex-M CPUs + * + * -------------------------------------------------------------------- */ + +#include "arm_nnfunctions.h" +#include "arm_nnsupportfunctions.h" + +/** + * @ingroup groupNN + */ + +/** + * @addtogroup Pooling + * @{ + */ + +/* + * s16 average pooling function + * + * Refer to header file for details. + * + */ +arm_status arm_avgpool_s16(const cmsis_nn_context *ctx, + const cmsis_nn_pool_params *pool_params, + const cmsis_nn_dims *input_dims, + const q15_t *src, + const cmsis_nn_dims *filter_dims, + const cmsis_nn_dims *output_dims, + q15_t *dst) +{ + (void)ctx; + const int32_t input_y = input_dims->h; + const int32_t input_x = input_dims->w; + const int32_t output_y = output_dims->h; + const int32_t output_x = output_dims->w; + const int32_t stride_y = pool_params->stride.h; + const int32_t stride_x = pool_params->stride.w; + const int32_t kernel_y = filter_dims->h; + const int32_t kernel_x = filter_dims->w; + const int32_t pad_y = pool_params->padding.h; + const int32_t pad_x = pool_params->padding.w; + const int32_t act_min = pool_params->activation.min; + const int32_t act_max = pool_params->activation.max; + const int32_t ch_src = input_dims->c; + + /* Reference C code adapted from CMSIS-NN arm_avgpool_s8.c. + */ + + for (int i_y = 0, base_idx_y = -pad_y; i_y < output_y; base_idx_y += stride_y, i_y++) + { + for (int i_x = 0, base_idx_x = -pad_x; i_x < output_x; base_idx_x += stride_x, i_x++) + { + /* Condition for kernel start dimension: (base_idx_<x,y> + kernel_<x,y>_start) >= 0 */ + const int32_t ker_y_start = MAX(0, -base_idx_y); + const int32_t ker_x_start = MAX(0, -base_idx_x); + + /* Condition for kernel end dimension: (base_idx_<x,y> + kernel_<x,y>_end) < dim_src_<width,height> */ + const int32_t kernel_y_end = MIN(kernel_y, input_y - base_idx_y); + const int32_t kernel_x_end = MIN(kernel_x, input_x - base_idx_x); + + for (int i_ch_in = 0; i_ch_in < ch_src; i_ch_in++) + { + int sum = 0; + int count = 0; + + for (int k_y = ker_y_start; k_y < kernel_y_end; k_y++) + { + for (int k_x = ker_x_start; k_x < kernel_x_end; k_x++) + { + sum += src[i_ch_in + ch_src * (k_x + base_idx_x + (k_y + base_idx_y) * input_x)]; + count++; + } + } + + // Prevent static code issue DIVIDE_BY_ZERO. + if (count == 0) + { + return ARM_MATH_ARGUMENT_ERROR; + } + + sum = sum > 0 ? (sum + count / 2) / count : (sum - count / 2) / count; + sum = MAX(sum, act_min); + sum = MIN(sum, act_max); + + dst[i_ch_in + ch_src * (i_x + i_y * output_x)] = sum; + } + } + } + + return ARM_MATH_SUCCESS; +} + +int32_t arm_avgpool_s16_get_buffer_size(const int output_x, const int ch_src) +{ + (void)output_x; + (void)ch_src; + return 0; +} + +/** + * @} end of Pooling group + */ |