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nvidia--tensorrt/plugin/common/nmsHelper.cpp
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chore: import upstream snapshot with attribution
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/*
* SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "common/plugin.h"
#include <algorithm>
#include <cuda_fp16.h>
namespace nvinfer1::plugin
{
size_t detectionForwardBBoxDataSize(int32_t N, int32_t C1, DataType DT_BBOX)
{
if (DT_BBOX == DataType::kFLOAT)
{
return N * C1 * sizeof(float);
}
if (DT_BBOX == DataType::kHALF)
{
return N * C1 * sizeof(__half);
}
printf("Only FP32/FP16 type bounding boxes are supported.\n");
return (size_t) -1;
}
size_t detectionForwardBBoxPermuteSize(bool shareLocation, int32_t N, int32_t C1, DataType DT_BBOX)
{
if (DT_BBOX == DataType::kFLOAT)
{
return shareLocation ? 0 : N * C1 * sizeof(float);
}
if (DT_BBOX == DataType::kHALF)
{
return shareLocation ? 0 : N * C1 * sizeof(__half);
}
printf("Only FP32/FP16 type bounding boxes are supported.\n");
return (size_t) -1;
}
size_t detectionForwardPreNMSSize(int32_t N, int32_t C2)
{
PLUGIN_ASSERT(sizeof(float) == sizeof(int32_t));
return N * C2 * sizeof(float);
}
size_t detectionForwardPostNMSSize(int32_t N, int32_t numClasses, int32_t topK)
{
PLUGIN_ASSERT(sizeof(float) == sizeof(int32_t));
return N * numClasses * topK * sizeof(float);
}
} // namespace nvinfer1::plugin