COMPMID-344 Updated doxygen

Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae

1 files changed, 142 insertions, 0 deletions

diff --git a/src/core/NEON/kernels/NETableLookupKernel.cpp b/src/core/NEON/kernels/NETableLookupKernel.cpp
new file mode 100644
index 0000000000..f0b58d82f6
--- /dev/null
+++ b/src/core/NEON/kernels/NETableLookupKernel.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2016, 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 "arm_compute/core/NEON/kernels/NETableLookupKernel.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/ILut.h"
+#include "arm_compute/core/ITensor.h"
+#include "arm_compute/core/TensorInfo.h"
+#include "arm_compute/core/Utils.h"
+#include "arm_compute/core/Validate.h"
+
+#include <cstddef>
+#include <cstdint>
+
+using namespace arm_compute;
+
+namespace arm_compute
+{
+class Coordinates;
+
+constexpr unsigned int num_num_elems_processed_per_iteration = 16;
+} // namespace arm_compute
+
+NETableLookupKernel::NETableLookupKernel()
+    : _func(nullptr), _lut(nullptr)
+{
+}
+
+template <class T>
+void NETableLookupKernel::tableLookup(const Window &window)
+{
+    uint32_t     offset = _lut->index_offset();
+    size_t       count  = _lut->num_elements();
+    const auto   lut    = reinterpret_cast<const T *>(_lut->buffer());
+    unsigned int step   = num_num_elems_processed_per_iteration;
+
+    ARM_COMPUTE_ERROR_ON(lut == nullptr);
+
+    Iterator input  = Iterator(_input, window);
+    Iterator output = Iterator(_output, window);
+
+    execute_window_loop(window, [&](const Coordinates & id)
+    {
+        auto input_ptr  = reinterpret_cast<const T *>(input.ptr());
+        auto output_ptr = reinterpret_cast<T *>(output.ptr());
+
+        for(unsigned int i = 0; i < step; ++i, ++input_ptr, ++output_ptr)
+        {
+            const int32_t index = offset + *input_ptr;
+
+            if(0 <= index && index < static_cast<int32_t>(count))
+            {
+                *output_ptr = lut[index];
+            }
+        }
+    },
+    input, output);
+}
+
+namespace arm_compute
+{
+template <>
+void NETableLookupKernel::tableLookup<uint8_t>(const Window &window)
+{
+    const uint8_t *const lut  = _lut->buffer();
+    unsigned int         step = num_num_elems_processed_per_iteration;
+
+    ARM_COMPUTE_ERROR_ON(lut == nullptr);
+
+    Iterator input  = Iterator(_input, window);
+    Iterator output = Iterator(_output, window);
+
+    execute_window_loop(window, [&](const Coordinates & id)
+    {
+        const uint8_t *input_ptr  = input.ptr();
+        uint8_t       *output_ptr = output.ptr();
+
+        for(unsigned int i = 0; i < step; ++i)
+        {
+            *output_ptr++ = lut[*input_ptr++];
+        }
+    },
+    input, output);
+}
+} // namespace arm_compute
+
+void NETableLookupKernel::configure(const ITensor *input, const ILut *lut, ITensor *output)
+{
+    ARM_COMPUTE_ERROR_ON(input == nullptr);
+    ARM_COMPUTE_ERROR_ON(lut == nullptr);
+    ARM_COMPUTE_ERROR_ON(output == nullptr);
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8, DataType::S16);
+    ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8, DataType::S16);
+    ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
+
+    _lut = lut;
+
+    if(input->info()->data_type() == DataType::U8 && output->info()->data_type() == DataType::U8)
+    {
+        _func = &NETableLookupKernel::tableLookup<uint8_t>;
+    }
+    else if(input->info()->data_type() == DataType::S16 && output->info()->data_type() == DataType::S16)
+    {
+        _func = &NETableLookupKernel::tableLookup<int16_t>;
+    }
+    else
+    {
+        ARM_COMPUTE_ERROR("Unsupported combination of input and output DataType.");
+    }
+
+    INESimpleKernel::configure(input, output, num_num_elems_processed_per_iteration);
+}
+
+void NETableLookupKernel::run(const Window &window)
+{
+    ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+    ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window);
+    ARM_COMPUTE_ERROR_ON(_func == nullptr);
+    (this->*_func)(window);
+}