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diff --git a/src/core/NEON/kernels/NEChannelCombineKernel.cpp b/src/core/NEON/kernels/NEChannelCombineKernel.cpp
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--- a/src/core/NEON/kernels/NEChannelCombineKernel.cpp
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-/*
- * Copyright (c) 2016-2020 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 "src/core/NEON/kernels/NEChannelCombineKernel.h"
-
-#include "arm_compute/core/Error.h"
-#include "arm_compute/core/Helpers.h"
-#include "arm_compute/core/IAccessWindow.h"
-#include "arm_compute/core/IMultiImage.h"
-#include "arm_compute/core/ITensor.h"
-#include "arm_compute/core/MultiImageInfo.h"
-#include "arm_compute/core/TensorInfo.h"
-#include "arm_compute/core/Types.h"
-#include "arm_compute/core/Validate.h"
-#include "arm_compute/core/Window.h"
-#include "src/core/helpers/AutoConfiguration.h"
-#include "src/core/helpers/WindowHelpers.h"
-
-#include <arm_neon.h>
-
-using namespace arm_compute;
-
-namespace arm_compute
-{
-class Coordinates;
-} // namespace arm_compute
-
-NEChannelCombineKernel::NEChannelCombineKernel()
- : _func(nullptr), _planes{ { nullptr } }, _output(nullptr), _output_multi(nullptr), _x_subsampling{ { 1, 1, 1 } }, _y_subsampling{ { 1, 1, 1 } }, _num_elems_processed_per_iteration(8),
-_is_parallelizable(true)
-{
-}
-
-void NEChannelCombineKernel::configure(const ITensor *plane0, const ITensor *plane1, const ITensor *plane2, const ITensor *plane3, ITensor *output)
-{
- ARM_COMPUTE_ERROR_ON_NULLPTR(plane0, plane1, plane2, output);
- ARM_COMPUTE_ERROR_ON(plane0 == output);
- ARM_COMPUTE_ERROR_ON(plane1 == output);
- ARM_COMPUTE_ERROR_ON(plane2 == output);
-
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane0, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane1, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane2, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::RGB888, Format::RGBA8888, Format::UYVY422, Format::YUYV422);
-
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane0, 1, DataType::U8);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane1, 1, DataType::U8);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane2, 1, DataType::U8);
-
- const Format output_format = output->info()->format();
-
- // Check if horizontal dimension of Y plane is even and validate horizontal sub-sampling dimensions for U and V planes
- if(Format::YUYV422 == output_format || Format::UYVY422 == output_format)
- {
- // Validate Y plane of input and output
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_EVEN(output_format, plane0, output);
-
- // Validate U and V plane of the input
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_SUBSAMPLED(output_format, plane0->info()->tensor_shape(), plane1, plane2);
- }
-
- _planes[0] = plane0;
- _planes[1] = plane1;
- _planes[2] = plane2;
- _planes[3] = nullptr;
-
- // Validate the last input tensor only for RGBA format
- if(Format::RGBA8888 == output_format)
- {
- ARM_COMPUTE_ERROR_ON_NULLPTR(plane3);
- ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(plane3);
-
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane3, Format::U8);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane3, 1, DataType::U8);
-
- _planes[3] = plane3;
- }
-
- _output = output;
- _output_multi = nullptr;
-
- // Half the processed elements for U and V channels due to horizontal sub-sampling of 2
- if(Format::YUYV422 == output_format || Format::UYVY422 == output_format)
- {
- _x_subsampling[1] = 2;
- _x_subsampling[2] = 2;
- }
-
- _num_elems_processed_per_iteration = 8;
- _is_parallelizable = true;
-
- // Select function and number of elements to process given the output format
- switch(output_format)
- {
- case Format::RGB888:
- _func = &NEChannelCombineKernel::combine_3C;
- break;
- case Format::RGBA8888:
- _func = &NEChannelCombineKernel::combine_4C;
- break;
- case Format::UYVY422:
- _num_elems_processed_per_iteration = 16;
- _func = &NEChannelCombineKernel::combine_YUV_1p<true>;
- break;
- case Format::YUYV422:
- _num_elems_processed_per_iteration = 16;
- _func = &NEChannelCombineKernel::combine_YUV_1p<false>;
- break;
- default:
- ARM_COMPUTE_ERROR("Not supported format.");
- break;
- }
-
- Window win = calculate_max_window(*plane0->info(), Steps(_num_elems_processed_per_iteration));
-
- AccessWindowHorizontal output_access(output->info(), 0, _num_elems_processed_per_iteration);
- AccessWindowHorizontal plane0_access(plane0->info(), 0, _num_elems_processed_per_iteration / _x_subsampling[1], 1.f / _x_subsampling[0]);
- AccessWindowHorizontal plane1_access(plane1->info(), 0, _num_elems_processed_per_iteration / _x_subsampling[1], 1.f / _x_subsampling[1]);
- AccessWindowHorizontal plane2_access(plane2->info(), 0, _num_elems_processed_per_iteration / _x_subsampling[1], 1.f / _x_subsampling[2]);
- AccessWindowHorizontal plane3_access(plane3 == nullptr ? nullptr : plane3->info(), 0, _num_elems_processed_per_iteration);
-
- update_window_and_padding(
- win,
- plane0_access,
- plane1_access,
- plane2_access,
- plane3_access,
- output_access);
-
- ValidRegion valid_region = intersect_valid_regions(plane0->info()->valid_region(),
- plane1->info()->valid_region(),
- plane2->info()->valid_region());
-
- if(plane3 != nullptr)
- {
- valid_region = intersect_valid_regions(plane3->info()->valid_region(), valid_region);
- }
-
- output_access.set_valid_region(win, ValidRegion(valid_region.anchor, output->info()->tensor_shape()));
-
- INEKernel::configure(win);
-}
-
-void NEChannelCombineKernel::configure(const IImage *plane0, const IImage *plane1, const IImage *plane2, IMultiImage *output)
-{
- ARM_COMPUTE_ERROR_ON_NULLPTR(plane0, plane1, plane2, output);
- ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(plane0);
- ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(plane1);
- ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(plane2);
-
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane0, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane1, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(plane2, Format::U8);
- ARM_COMPUTE_ERROR_ON_FORMAT_NOT_IN(output, Format::NV12, Format::NV21, Format::IYUV, Format::YUV444);
-
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane0, 1, DataType::U8);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane1, 1, DataType::U8);
- ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(plane2, 1, DataType::U8);
-
- const Format output_format = output->info()->format();
-
- // Validate shape of Y plane to be even and shape of sub-sampling dimensions for U and V planes
- // Perform validation only for formats which require sub-sampling.
- if(Format::YUV444 != output_format)
- {
- // Validate Y plane of input and output
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_EVEN(output_format, plane0, output->plane(0));
-
- // Validate U and V plane of the input
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_SUBSAMPLED(output_format, plane0->info()->tensor_shape(), plane1, plane2);
-
- // Validate second plane U (NV12 and NV21 have a UV88 combined plane while IYUV has only the U plane)
- // MultiImage generates the correct tensor shape but also check in case the tensor shape of planes was changed to a wrong size
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_SUBSAMPLED(output_format, plane0->info()->tensor_shape(), output->plane(1));
-
- // Validate the last plane V of format IYUV
- if(Format::IYUV == output_format)
- {
- // Validate Y plane of the output
- ARM_COMPUTE_ERROR_ON_TENSORS_NOT_SUBSAMPLED(output_format, plane0->info()->tensor_shape(), output->plane(2));
- }
- }
-
- _planes[0] = plane0;
- _planes[1] = plane1;
- _planes[2] = plane2;
- _planes[3] = nullptr;
- _output = nullptr;
- _output_multi = output;
-
- bool has_two_planes = false;
- unsigned int num_elems_written_plane1 = 8;
-
- _num_elems_processed_per_iteration = 8;
- _is_parallelizable = true;
-
- switch(output_format)
- {
- case Format::NV12:
- case Format::NV21:
- _x_subsampling = { { 1, 2, 2 } };
- _y_subsampling = { { 1, 2, 2 } };
- _func = &NEChannelCombineKernel::combine_YUV_2p;
- has_two_planes = true;
- num_elems_written_plane1 = 16;
- break;
- case Format::IYUV:
- _is_parallelizable = false;
- _x_subsampling = { { 1, 2, 2 } };
- _y_subsampling = { { 1, 2, 2 } };
- _func = &NEChannelCombineKernel::combine_YUV_3p;
- break;
- case Format::YUV444:
- _is_parallelizable = false;
- _x_subsampling = { { 1, 1, 1 } };
- _y_subsampling = { { 1, 1, 1 } };
- _func = &NEChannelCombineKernel::combine_YUV_3p;
- break;
- default:
- ARM_COMPUTE_ERROR("Not supported format.");
- break;
- }
-
- const unsigned int y_step = *std::max_element(_y_subsampling.begin(), _y_subsampling.end());
-
- Window win = calculate_max_window(*plane0->info(), Steps(_num_elems_processed_per_iteration, y_step));
- AccessWindowRectangle output_plane0_access(output->plane(0)->info(), 0, 0, _num_elems_processed_per_iteration, 1, 1.f, 1.f / _y_subsampling[0]);
- AccessWindowRectangle output_plane1_access(output->plane(1)->info(), 0, 0, num_elems_written_plane1, 1, 1.f / _x_subsampling[1], 1.f / _y_subsampling[1]);
- AccessWindowRectangle output_plane2_access(has_two_planes ? nullptr : output->plane(2)->info(), 0, 0, _num_elems_processed_per_iteration, 1, 1.f / _x_subsampling[2], 1.f / _y_subsampling[2]);
-
- update_window_and_padding(win,
- AccessWindowHorizontal(plane0->info(), 0, _num_elems_processed_per_iteration),
- AccessWindowRectangle(plane1->info(), 0, 0, _num_elems_processed_per_iteration, 1, 1.f / _x_subsampling[1], 1.f / _y_subsampling[1]),
- AccessWindowRectangle(plane2->info(), 0, 0, _num_elems_processed_per_iteration, 1, 1.f / _x_subsampling[2], 1.f / _y_subsampling[2]),
- output_plane0_access,
- output_plane1_access,
- output_plane2_access);
-
- ValidRegion plane0_valid_region = plane0->info()->valid_region();
- ValidRegion output_plane1_region = has_two_planes ? intersect_valid_regions(plane1->info()->valid_region(), plane2->info()->valid_region()) : plane2->info()->valid_region();
-
- output_plane0_access.set_valid_region(win, ValidRegion(plane0_valid_region.anchor, output->plane(0)->info()->tensor_shape()));
- output_plane1_access.set_valid_region(win, ValidRegion(output_plane1_region.anchor, output->plane(1)->info()->tensor_shape()));
- output_plane2_access.set_valid_region(win, ValidRegion(plane2->info()->valid_region().anchor, output->plane(2)->info()->tensor_shape()));
-
- INEKernel::configure(win);
-}
-
-bool NEChannelCombineKernel::is_parallelisable() const
-{
- return _is_parallelizable;
-}
-
-void NEChannelCombineKernel::run(const Window &window, const ThreadInfo &info)
-{
- ARM_COMPUTE_UNUSED(info);
- ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
- ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window);
- ARM_COMPUTE_ERROR_ON(_func == nullptr);
-
- (this->*_func)(window);
-}
-
-void NEChannelCombineKernel::combine_3C(const Window &win)
-{
- Iterator p0(_planes[0], win);
- Iterator p1(_planes[1], win);
- Iterator p2(_planes[2], win);
- Iterator out(_output, win);
-
- execute_window_loop(win, [&](const Coordinates &)
- {
- const auto p0_ptr = static_cast<uint8_t *>(p0.ptr());
- const auto p1_ptr = static_cast<uint8_t *>(p1.ptr());
- const auto p2_ptr = static_cast<uint8_t *>(p2.ptr());
- const auto out_ptr = static_cast<uint8_t *>(out.ptr());
-
- const uint8x8x3_t pixels =
- {
- {
- vld1_u8(p0_ptr),
- vld1_u8(p1_ptr),
- vld1_u8(p2_ptr)
- }
- };
-
- vst3_u8(out_ptr, pixels);
- },
- p0, p1, p2, out);
-}
-
-void NEChannelCombineKernel::combine_4C(const Window &win)
-{
- Iterator p0(_planes[0], win);
- Iterator p1(_planes[1], win);
- Iterator p2(_planes[2], win);
- Iterator p3(_planes[3], win);
- Iterator out(_output, win);
-
- execute_window_loop(win, [&](const Coordinates &)
- {
- const auto p0_ptr = static_cast<uint8_t *>(p0.ptr());
- const auto p1_ptr = static_cast<uint8_t *>(p1.ptr());
- const auto p2_ptr = static_cast<uint8_t *>(p2.ptr());
- const auto p3_ptr = static_cast<uint8_t *>(p3.ptr());
- const auto out_ptr = static_cast<uint8_t *>(out.ptr());
-
- const uint8x8x4_t pixels =
- {
- {
- vld1_u8(p0_ptr),
- vld1_u8(p1_ptr),
- vld1_u8(p2_ptr),
- vld1_u8(p3_ptr)
- }
- };
-
- vst4_u8(out_ptr, pixels);
- },
- p0, p1, p2, p3, out);
-}
-
-template <bool is_uyvy>
-void NEChannelCombineKernel::combine_YUV_1p(const Window &win)
-{
- // Create sub-sampled uv window and init uv planes
- Window win_uv(win);
- win_uv.set_dimension_step(Window::DimX, win.x().step() / _x_subsampling[1]);
- win_uv.validate();
-
- Iterator p0(_planes[0], win);
- Iterator p1(_planes[1], win_uv);
- Iterator p2(_planes[2], win_uv);
- Iterator out(_output, win);
-
- constexpr auto shift = is_uyvy ? 1 : 0;
-
- execute_window_loop(win, [&](const Coordinates &)
- {
- const auto p0_ptr = static_cast<uint8_t *>(p0.ptr());
- const auto p1_ptr = static_cast<uint8_t *>(p1.ptr());
- const auto p2_ptr = static_cast<uint8_t *>(p2.ptr());
- const auto out_ptr = static_cast<uint8_t *>(out.ptr());
-
- const uint8x8x2_t pixels_y = vld2_u8(p0_ptr);
- const uint8x8x2_t pixels_uv =
- {
- {
- vld1_u8(p1_ptr),
- vld1_u8(p2_ptr)
- }
- };
-
- uint8x8x4_t pixels{ {} };
- pixels.val[0 + shift] = pixels_y.val[0];
- pixels.val[1 - shift] = pixels_uv.val[0];
- pixels.val[2 + shift] = pixels_y.val[1];
- pixels.val[3 - shift] = pixels_uv.val[1];
-
- vst4_u8(out_ptr, pixels);
- },
- p0, p1, p2, out);
-}
-
-void NEChannelCombineKernel::combine_YUV_2p(const Window &win)
-{
- ARM_COMPUTE_ERROR_ON(win.x().start() % _x_subsampling[1]);
- ARM_COMPUTE_ERROR_ON(win.y().start() % _y_subsampling[1]);
-
- // Copy first plane
- copy_plane(win, 0);
-
- // Update UV window
- Window uv_win(win);
- uv_win.set(Window::DimX, Window::Dimension(uv_win.x().start() / _x_subsampling[1], uv_win.x().end() / _x_subsampling[1], uv_win.x().step() / _x_subsampling[1]));
- uv_win.set(Window::DimY, Window::Dimension(uv_win.y().start() / _y_subsampling[1], uv_win.y().end() / _y_subsampling[1], 1));
- uv_win.validate();
-
- // Update output win
- Window out_win(win);
- out_win.set(Window::DimX, Window::Dimension(out_win.x().start(), out_win.x().end(), out_win.x().step() / _x_subsampling[1]));
- out_win.set(Window::DimY, Window::Dimension(out_win.y().start() / _y_subsampling[1], out_win.y().end() / _y_subsampling[1], 1));
- out_win.validate();
-
- // Construct second plane
- const int shift = (Format::NV12 == _output_multi->info()->format()) ? 0 : 1;
- Iterator p1(_planes[1 + shift], uv_win);
- Iterator p2(_planes[2 - shift], uv_win);
- Iterator out(_output_multi->plane(1), out_win);
-
- // Increase step size after iterator is created to calculate stride correctly for multi channel format
- out_win.set_dimension_step(Window::DimX, out_win.x().step() * _x_subsampling[1]);
-
- execute_window_loop(out_win, [&](const Coordinates &)
- {
- const uint8x8x2_t pixels =
- {
- {
- vld1_u8(p1.ptr()),
- vld1_u8(p2.ptr())
- }
- };
-
- vst2_u8(out.ptr(), pixels);
- },
- p1, p2, out);
-}
-
-void NEChannelCombineKernel::combine_YUV_3p(const Window &win)
-{
- copy_plane(win, 0);
- copy_plane(win, 1);
- copy_plane(win, 2);
-}
-
-void NEChannelCombineKernel::copy_plane(const Window &win, uint32_t plane_id)
-{
- ARM_COMPUTE_ERROR_ON(win.x().start() % _x_subsampling[plane_id]);
- ARM_COMPUTE_ERROR_ON(win.y().start() % _y_subsampling[plane_id]);
-
- // Update window
- Window tmp_win(win);
- tmp_win.set(Window::DimX, Window::Dimension(tmp_win.x().start() / _x_subsampling[plane_id], tmp_win.x().end() / _x_subsampling[plane_id], tmp_win.x().step() / _x_subsampling[plane_id]));
- tmp_win.set(Window::DimY, Window::Dimension(tmp_win.y().start() / _y_subsampling[plane_id], tmp_win.y().end() / _y_subsampling[plane_id], 1));
-
- Iterator in(_planes[plane_id], tmp_win);
- Iterator out(_output_multi->plane(plane_id), tmp_win);
-
- execute_window_loop(tmp_win, [&](const Coordinates &)
- {
- const uint8x8_t pixels = vld1_u8(in.ptr());
-
- vst1_u8(out.ptr(), pixels);
- },
- in, out);
-}
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