| /* |
| * Copyright (c) 2018 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_asymm.h" |
| #include "warp_helpers_quantized.h" |
| |
| /** Transforms four 2D coordinates. This is used to map the output coordinates to the input coordinates. |
| * |
| * @param[in] coord 2D coordinates to transform. |
| * @param[in] scale input/output scale ratio |
| * |
| * @return a float8 containing 4 2D transformed values in the input image. |
| */ |
| inline const float8 transform_bilinear_quantized(const float2 coord, const float2 scale) |
| { |
| const float4 in_x_coords = (float4)(coord.s0, 1 + coord.s0, 2 + coord.s0, 3 + coord.s0); |
| #ifdef SAMPLING_POLICY_TOP_LEFT |
| const float4 new_x = in_x_coords * (float4)(scale.s0); |
| const float4 new_y = (float4)(coord.s1 * scale.s1); |
| return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
| #elif SAMPLING_POLICY_CENTER |
| const float4 new_x = (in_x_coords + ((float4)(0.5f))) * (float4)(scale.s0) - (float4)(0.5f); |
| const float4 new_y = (float4)((coord.s1 + 0.5f) * scale.s1 - 0.5f); |
| return (float8)(new_x.s0, new_y.s0, new_x.s1, new_y.s1, new_x.s2, new_y.s2, new_x.s3, new_y.s3); |
| #else /* SAMPLING_POLICY */ |
| #error("Unsupported sampling policy"); |
| #endif /* SAMPLING_POLICY */ |
| } |
| |
| /** Performs an affine transformation on an image interpolating with the BILINEAR method. |
| * |
| * @note Sampling policy to used is passed as -DSAMPLING_POLICY_(TYPE) e.g. -DSAMPLING_POLICY_TOP_LEFT |
| * @note Scale value for QASYMM8 data type to used is passed as -DSCALE=<VALUE> e.g. -DSCALE=0.5 |
| * @note Offset value for QASYMM8 data type to used is passed as -DOFFSET=<VALUE> e.g. -DOFFSET=1 |
| * |
| * @param[in] in_ptr Pointer to the source image. Supported data types: QASYMM8. |
| * @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_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: U8, S16. (Must be the same as the input) |
| * @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_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_quantized_nchw( |
| IMAGE_DECLARATION(in), |
| IMAGE_DECLARATION(out), |
| const float input_width, |
| const float input_height, |
| const float scale_x, |
| const float scale_y) |
| { |
| Image in = CONVERT_TO_IMAGE_STRUCT_NO_STEP(in); |
| Image out = CONVERT_TO_IMAGE_STRUCT(out); |
| const float2 r = (float2)(scale_x, scale_y); |
| const float8 tc = transform_bilinear_quantized(get_current_coords_quantized(), r); |
| vstore4(bilinear_interpolate_with_border_quantized(&in, tc, input_width, input_height, BORDER_SIZE, SCALE, OFFSET), 0, (__global DATA_TYPE *)out.ptr); |
| } |
| |
| #if defined(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 Scale value for QASYMM8 data type to used is passed as -DSCALE=<VALUE> e.g. -DSCALE=0.5 |
| * @note Offset value for QASYMM8 data type to used is passed as -DOFFSET=<VALUE> e.g. -DOFFSET=1 |
| * @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 |
| * |
| * @param[in] in_ptr Pointer to the source image. Supported data types: QASYMM8. |
| * @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_quantized_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); |
| float clamped_x = clamp(new_xf, 0.0f, input_width - 1); |
| float clamped_x1 = clamp(new_xf + 1, 0.0f, input_width - 1); |
| float clamped_x_ = clamped_x; |
| float clamped_x1_ = clamped_x1; |
| 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 |
| clamped_x1 = select(clamped_x1, 0.0f - BORDER_SIZE, new_yf + 1 < 0.f || new_yf + 1 > input_height - 1 || new_xf + 1 < 0.f || new_xf + 1 > input_width - 1); |
| clamped_x_ = select(clamped_x_, 0.0f - BORDER_SIZE, new_yf + 1 > input_height - 1 || new_xf < 0.f || new_xf > input_width - 1); |
| clamped_x = select(clamped_x, 0.0f - BORDER_SIZE, new_yf < 0.f || new_yf > input_height - 1 || new_xf < 0.f || new_xf > input_width - 1); |
| clamped_x1_ = select(clamped_x1_, 0.0f - BORDER_SIZE, new_xf + 1 < 0.f || new_xf + 1 > input_width - 1 || new_yf < 0.f || new_yf > input_height - 1); |
| #endif /* BORDER_MODE_REPLICATE */ |
| |
| int4 ins = (int4)(*((__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)))); |
| |
| 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 float4 insf32 = convert_float4(ins - (int4)OFFSET) * (float4)SCALE; |
| |
| const float fr = ((insf32.s0 * b * b1) + (insf32.s1 * a * b1) + (insf32.s2 * b * a1) + (insf32.s3 * a * a1)); |
| |
| DATA_TYPE res = CONVERT_SAT(convert_int_sat_rtp(fr / SCALE) + OFFSET, DATA_TYPE); |
| |
| *((__global DATA_TYPE *)out.ptr) = res; |
| } |
| #endif /* defined(DEPTH_OUT) */ |