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+/*
+ * Copyright (c) 2016-2021 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"
+#include "warp_helpers.h"
+
+#if defined(DEPTH_OUT)
+/** Performs scale on an image interpolating with the NEAREAST NEIGHBOUR method. Input and output are single channel F32. (NHWC)
+ *
+ * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT
+ * @note Output tensor's depth should be given as a preprocessor argument using -DDEPTH_OUT=size. e.g. -DDEPTH=16
+ *
+ * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S16/F16/F32.
+ * @param[in] in_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] in_stride_z Stride of the source image in Z dimension (in bytes)
+ * @param[in] in_step_z src_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] out_ptr Pointer to the destination image. Supported data types: same as @p in_ptr
+ * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] out_stride_z Stride of the destination image in Z dimension (in bytes)
+ * @param[in] out_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image
+ * @param[in] input_width Input image width
+ * @param[in] input_height Input image height
+ * @param[in] scale_x The scale factor along x dimension
+ * @param[in] scale_y The scale factor along y dimension
+ */
+__kernel void scale_nearest_neighbour_nhwc(
+ TENSOR4D_DECLARATION(in),
+ TENSOR4D_DECLARATION(out),
+ const float input_width,
+ const float input_height,
+ const float scale_x,
+ const float scale_y)
+{
+ Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0);
+ Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT);
+
+#ifdef SAMPLING_POLICY_TOP_LEFT
+ float new_x = get_global_id(1) * scale_x;
+ float new_y = (get_global_id(2) % DEPTH_OUT) * scale_y;
+#elif SAMPLING_POLICY_CENTER
+ float new_x = (get_global_id(1) + 0.5f) * scale_x;
+ float new_y = ((get_global_id(2) % DEPTH_OUT) + 0.5f) * scale_y;
+#else /* SAMPLING_POLICY */
+#error("Unsupported sampling policy");
+#endif /* SAMPLING_POLICY */
+#ifdef ALIGN_CORNERS
+ new_x = round(new_x);
+ new_y = round(new_y);
+#endif /* ALIGN_CORNERS */
+ const float clamped_x = clamp(new_x, 0.0f, input_width - 1);
+ const float clamped_y = clamp(new_y, 0.0f, input_height - 1);
+
+ *((__global DATA_TYPE *)out.ptr) = *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT)));
+}
+
+/** Performs scale on an image interpolating with the BILINEAR method. (NHWC)
+ *
+ * @note Sampling policy to be used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT
+ * @note If border mode replicate is used, is should be passed as -DBORDER_MODE_REPLICATE
+ * @note Output tensor's depth should be given as a preprocessor argument using -DDEPTH_OUT=size. e.g. -DDEPTH=16
+ * @note The value to be used at the edges of the images shoud be given as a preprocessor argument using -DCONSTANT_VALUE=value.
+ *
+ * @param[in] in_ptr Pointer to the source image. Supported data types: U8/S16/F16/F32.
+ * @param[in] in_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] in_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] in_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] in_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] in_stride_z Stride of the source image in Z dimension (in bytes)
+ * @param[in] in_step_z src_stride_z * number of elements along Z processed per workitem(in bytes)
+ * @param[in] in_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] out_ptr Pointer to the destination image. Supported data types: same as @p in_ptr
+ * @param[in] out_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] out_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] out_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] out_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] out_stride_z Stride of the destination image in Z dimension (in bytes)
+ * @param[in] out_step_z dst_stride_y * number of elements along Z processed per workitem(in bytes)
+ * @param[in] out_offset_first_element_in_bytes The offset of the first element in the destination image
+ * @param[in] input_width Input image width
+ * @param[in] input_height Input image height
+ * @param[in] scale_x The scale factor along x dimension
+ * @param[in] scale_y The scale factor along y dimension
+ *
+ */
+__kernel void scale_bilinear_nhwc(
+ TENSOR4D_DECLARATION(in),
+ TENSOR4D_DECLARATION(out),
+ const float input_width,
+ const float input_height,
+ const float scale_x,
+ const float scale_y)
+{
+ Tensor4D in = CONVERT_TO_TENSOR4D_STRUCT_NO_STEP(in, 0);
+ Tensor4D out = CONVERT_TO_TENSOR4D_STRUCT(out, DEPTH_OUT);
+
+#ifdef SAMPLING_POLICY_TOP_LEFT
+ const float new_x = get_global_id(1) * scale_x;
+ const float new_y = (get_global_id(2) % DEPTH_OUT) * scale_y;
+#elif SAMPLING_POLICY_CENTER
+ const float new_x = (get_global_id(1) + 0.5f) * scale_x - 0.5f;
+ const float new_y = ((get_global_id(2) % DEPTH_OUT) + 0.5f) * scale_y - 0.5f;
+#else /* SAMPLING_POLICY */
+#error("Unsupported sampling policy");
+#endif /* SAMPLING_POLICY */
+
+ const float new_xf = floor(new_x);
+ const float new_yf = floor(new_y);
+ const float clamped_x = clamp(new_xf, 0.0f, input_width - 1);
+ const float clamped_x1 = clamp(new_xf + 1, 0.0f, input_width - 1);
+ const float clamped_y = clamp(new_yf, 0.0f, input_height - 1);
+ const float clamped_y1 = clamp(new_yf + 1, 0.0f, input_height - 1);
+
+#ifndef BORDER_MODE_REPLICATE
+ const bool check_x = (0.f <= new_xf && new_xf < input_width);
+ const bool check_x1 = (-1.f <= new_xf && new_xf < input_width - 1);
+ const bool check_y = (0.f <= new_yf && new_yf < input_height);
+ const bool check_y1 = (-1.f <= new_yf && new_yf < input_height - 1);
+ const float ins_0 = select((float)(CONSTANT_VALUE), (float)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y),
+ (get_global_id(2) / DEPTH_OUT)))),
+ check_x && check_y);
+ const float ins_1 = select((float)(CONSTANT_VALUE), (float)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y),
+ (get_global_id(2) / DEPTH_OUT)))),
+ check_x1 && check_y);
+ const float ins_2 = select((float)(CONSTANT_VALUE), (float)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y1),
+ (get_global_id(2) / DEPTH_OUT)))),
+ check_x && check_y1);
+ const float ins_3 = select((float)(CONSTANT_VALUE), (float)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y1),
+ (get_global_id(2) / DEPTH_OUT)))),
+ check_x1 && check_y1);
+ float4 ins = (float4)(ins_0, ins_1, ins_2, ins_3);
+#else /* BORDER_MODE_REPLICATE */
+ float4 ins = (float4)(*((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))),
+ *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y), (get_global_id(2) / DEPTH_OUT))),
+ *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT))),
+ *((__global DATA_TYPE *)tensor4D_offset(&in, get_global_id(0), convert_int(clamped_x1), convert_int(clamped_y1), (get_global_id(2) / DEPTH_OUT))));
+#endif /* BORDER_MODE_REPLICATE */
+
+ const float a = new_x - new_xf;
+ const float b = 1.f - a;
+ const float a1 = new_y - new_yf;
+ const float b1 = 1.f - a1;
+ const float fr = ((ins.s0 * b * b1) + (ins.s1 * a * b1) + (ins.s2 * b * a1) + (ins.s3 * a * a1));
+
+ *((__global DATA_TYPE *)out.ptr) = CONVERT(fr, DATA_TYPE);
+}
+#endif /* defined(DEPTH_OUT) */ \ No newline at end of file
generated by cgit v1.2.1 (git 2.23.0) at 2024-05-23 01:47:03 +0000