mirror of
https://github.com/blakeblackshear/frigate.git
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89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015-2022 Advanced Micro Devices, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <migraphx/config.hpp>
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#include <migraphx/context.hpp>
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#include <migraphx/cpu/context.hpp>
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#include <migraphx/op/gather.hpp>
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namespace migraphx {
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inline namespace MIGRAPHX_INLINE_NS {
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namespace cpu {
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struct cpu_gather : auto_register_op<cpu_gather>
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{
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op::gather op;
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template <class Self, class F>
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static auto reflect(Self& self, F f)
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{
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return migraphx::reflect(self.op, f);
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}
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std::string name() const { return "cpu::" + op.name(); }
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shape compute_shape(std::vector<shape> inputs) const
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{
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// Compensate for allocation
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inputs.pop_back();
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check_shapes(inputs, *this).standard();
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return migraphx::compute_shape(op, inputs);
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}
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argument
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compute(context& ctx, const shape& output_shape, const std::vector<argument>& args) const
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{
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std::size_t nelements = output_shape.elements();
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auto lens = args[0].get_shape().lens();
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auto axis_dim_size = lens[op.axis];
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lens[op.axis] = args[1].get_shape().elements();
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shape out_comp{output_shape.type(), lens};
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visit_all(args.back(), args[0])([&](auto output, auto input) {
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args[1].visit([&](auto indices) {
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const auto* indices_ptr = indices.data();
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auto* output_ptr = output.data();
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ctx.bulk_execute(nelements, 1024, [=](auto start, auto end) {
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for(auto i = start; i < end; i++)
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{
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auto idx = out_comp.multi(i);
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auto in_index = indices_ptr[idx[op.axis]];
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in_index = (in_index < 0) ? in_index + axis_dim_size : in_index;
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idx[op.axis] = in_index;
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output_ptr[i] = input(idx.begin(), idx.end());
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}
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});
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});
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});
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return args.back();
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}
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std::ptrdiff_t output_alias(const std::vector<shape>& shapes) const
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{
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return shapes.size() - 1;
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}
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};
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} // namespace cpu
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} // namespace MIGRAPHX_INLINE_NS
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} // namespace migraphx
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