| /* |
| * 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 CONV_STRIDE_X == 1 |
| #define convolution1x3 convolution1x3_stride_1 |
| #elif CONV_STRIDE_X == 2 |
| #define convolution1x3 convolution1x3_stride_2 |
| #elif CONV_STRIDE_X == 3 |
| #define convolution1x3 convolution1x3_stride_3 |
| #else /* CONV_STRIDE_X */ |
| #error "Stride not supported" |
| #endif /* CONV_STRIDE_X */ |
| |
| /** Compute a 1D horizontal convolution of size 3 and stride 1 for floating point type. |
| * |
| * @param[in] left_pixel Pointer to the left pixel. |
| * @param[in] left_coeff Weight of the left pixel |
| * @param[in] middle_coeff Weight of the middle pixel |
| * @param[in] right_coeff Weight of the right pixel |
| * |
| * @return a float2 containing 2 convoluted values. |
| */ |
| inline float2 convolution1x3_stride_1(__global const uchar *left_pixel, |
| const float left_coeff, |
| const float middle_coeff, |
| const float right_coeff) |
| { |
| float4 temp = vload4(0, (__global float *)left_pixel); |
| |
| float2 left = CONVERT(temp.s01, float2); |
| float2 middle = CONVERT(temp.s12, float2); |
| float2 right = CONVERT(temp.s23, float2); |
| |
| return left * (float2)left_coeff + middle * (float2)middle_coeff + right * (float2)right_coeff; |
| } |
| |
| /** Compute a 1D horizontal convolution of size 3 and stride 2 for floating point type. |
| * |
| * @param[in] left_pixel Pointer to the left pixel. |
| * @param[in] left_coeff Weight of the left pixel |
| * @param[in] middle_coeff Weight of the middle pixel |
| * @param[in] right_coeff Weight of the right pixel |
| * |
| * @return a float2 containing 2 convoluted values. |
| */ |
| inline float2 convolution1x3_stride_2(__global const uchar *left_pixel, |
| const float left_coeff, |
| const float middle_coeff, |
| const float right_coeff) |
| { |
| float4 temp0 = vload4(0, (__global float *)left_pixel); |
| float temp1 = *((__global float *)(left_pixel + 4 * sizeof(float))); |
| |
| float2 left = CONVERT(temp0.s02, float2); |
| float2 middle = CONVERT(temp0.s13, float2); |
| float2 right = CONVERT((float2)(temp0.s2, temp1), float2); |
| |
| return left * (float2)left_coeff + middle * (float2)middle_coeff + right * (float2)right_coeff; |
| } |
| |
| /** Compute a 1D horizontal convolution of size 3 and stride 3 for floating point type. |
| * |
| * @param[in] left_pixel Pointer to the left pixel. |
| * @param[in] left_coeff Weight of the left pixel |
| * @param[in] middle_coeff Weight of the middle pixel |
| * @param[in] right_coeff Weight of the right pixel |
| * |
| * @return a float2 containing 2 convoluted values. |
| */ |
| inline float2 convolution1x3_stride_3(__global const uchar *left_pixel, |
| const float left_coeff, |
| const float middle_coeff, |
| const float right_coeff) |
| { |
| float4 temp0 = vload4(0, (__global float *)left_pixel); |
| float2 temp1 = vload2(0, (__global float *)(left_pixel + 4 * sizeof(float))); |
| |
| float2 left = CONVERT(temp0.s03, float2); |
| float2 middle = CONVERT((float2)(temp0.s1, temp1.s0), float2); |
| float2 right = CONVERT((float2)(temp0.s2, temp1.s1), float2); |
| |
| return left * (float2)left_coeff + middle * (float2)middle_coeff + right * (float2)right_coeff; |
| } |
| |
| /** Apply a 3x3 convolution matrix to a single channel F32 input image and return the result. |
| * |
| * Convolution matrix layout: |
| * |
| * [ mat0, mat1, mat2 ]\n |
| * [ mat3, mat4, mat5 ]\n |
| * [ mat6, mat7, mat8 ]\n |
| * |
| * @param[in] src A pointer to source Image structure |
| * @param[in] mat0 Coefficient from the convolution matrix |
| * @param[in] mat1 Coefficient from the convolution matrix |
| * @param[in] mat2 Coefficient from the convolution matrix |
| * @param[in] mat3 Coefficient from the convolution matrix |
| * @param[in] mat4 Coefficient from the convolution matrix |
| * @param[in] mat5 Coefficient from the convolution matrix |
| * @param[in] mat6 Coefficient from the convolution matrix |
| * @param[in] mat0 Coefficient from the convolution matrix |
| * @param[in] mat7 Coefficient from the convolution matrix |
| * @param[in] mat8 Coefficient from the convolution matrix |
| * |
| * @return a float2 containing 2 convoluted values. |
| */ |
| inline float2 convolution3x3( |
| Image *src, |
| const float mat0, const float mat1, const float mat2, |
| const float mat3, const float mat4, const float mat5, |
| const float mat6, const float mat7, const float mat8) |
| { |
| float2 pixels; |
| |
| pixels = convolution1x3(offset(src, 0, 0), mat0, mat1, mat2); |
| pixels += convolution1x3(offset(src, 0, 1), mat3, mat4, mat5); |
| pixels += convolution1x3(offset(src, 0, 2), mat6, mat7, mat8); |
| |
| return pixels; |
| } |
| |
| /** This function computes the horizontal integral of the image. |
| * |
| * @param[in] src_ptr Pointer to the source image. Supported data types: U8 |
| * @param[in] src_stride_x Stride of the source image in X dimension (in bytes) |
| * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes) |
| * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image |
| * @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes) |
| * @param[in] src_step_z src_stride_z * number of elements along Y processed per workitem(in bytes) |
| * @param[in] dst_ptr Pointer to the destination tensor. Supported data types: F16/F32 |
| * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes) |
| * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes) |
| * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes) |
| * @param[in] dst_step_z dst_stride_z * number of elements along Y processed per workitem(in bytes) |
| * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor |
| * @param[in] weights_ptr Pointer to the weights tensor. Supported data types: F16/F32 |
| * @param[in] weights_stride_x Stride of the weights tensor in X dimension (in bytes) |
| * @param[in] weights_step_x weights_stride_x * number of elements along X processed per workitem(in bytes) |
| * @param[in] weights_stride_y Stride of the weights tensor in Y dimension (in bytes) |
| * @param[in] weights_step_y weights_stride_y * number of elements along Y processed per workitem(in bytes) |
| * @param[in] weights_stride_z Stride of the weights tensor in Z dimension (in bytes) |
| * @param[in] weights_step_z weights_stride_z * number of elements along Y processed per workitem(in bytes) |
| * @param[in] weights_offset_first_element_in_bytes The offset of the first element in the weights tensor |
| */ |
| |
| __kernel void depthwise_convolution_3x3(TENSOR3D_DECLARATION(src), TENSOR3D_DECLARATION(dst), TENSOR3D_DECLARATION(weights)) |
| { |
| Image src = CONVERT_TENSOR3D_TO_IMAGE_STRUCT(src); |
| Image dst = CONVERT_TENSOR3D_TO_IMAGE_STRUCT(dst); |
| Tensor3D weights = CONVERT_TO_TENSOR3D_STRUCT(weights); |
| |
| uchar3 offset = (uchar3)(0, 1, 2) * (uchar3)weights_stride_y; |
| float3 weights_values0 = vload3(0, (__global float *)(weights.ptr + offset.s0)); |
| float3 weights_values1 = vload3(0, (__global float *)(weights.ptr + offset.s1)); |
| float3 weights_values2 = vload3(0, (__global float *)(weights.ptr + offset.s2)); |
| |
| float2 pixels = convolution3x3(&src, weights_values0.s0, weights_values0.s1, weights_values0.s2, |
| weights_values1.s0, weights_values1.s1, weights_values1.s2, |
| weights_values2.s0, weights_values2.s1, weights_values2.s2); |
| |
| vstore2(pixels, 0, (__global float *)dst.ptr); |
| } |