init

DCNv4_op/src/cuda/flash_deform_attn_cuda.h

+/*!
+**************************************************************************************************
+* Deformable DETR
+* Copyright (c) 2020 SenseTime. All Rights Reserved.
+* Licensed under the Apache License, Version 2.0 [see LICENSE for details]
+**************************************************************************************************
+* Modified from
+*https://github.com/chengdazhi/Deformable-Convolution-V2-PyTorch/tree/pytorch_1.0.0
+**************************************************************************************************
+*/
+
+#pragma once
+#include <torch/extension.h>
+
+at::Tensor flash_deform_attn_cuda_forward(
+    const at::Tensor &value, const at::Tensor &spatial_shapes,
+    const at::Tensor &level_start_index, const at::Tensor &sampling_loc_attn,
+    const int im2col_step, const int K, const int d_stride, const int block_thread);
+
+std::vector<at::Tensor>
+flash_deform_attn_cuda_backward(
+    const at::Tensor &value, const at::Tensor &spatial_shapes,
+    const at::Tensor &level_start_index, const at::Tensor &sampling_loc_attn,
+    const at::Tensor &grad_output, const int im2col_step, const int K,
+    const int d_stride, const int block_thread);
\ No newline at end of file

DCNv4_op/src/vision.cpp

+/*!
+**************************************************************************************************
+* Deformable DETR
+* Copyright (c) 2020 SenseTime. All Rights Reserved.
+* Licensed under the Apache License, Version 2.0 [see LICENSE for details]
+**************************************************************************************************
+* Modified from
+*https://github.com/chengdazhi/Deformable-Convolution-V2-PyTorch/tree/pytorch_1.0.0
+**************************************************************************************************
+*/
+
+#include "dcnv4.h"
+
+PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
+  m.def("flash_deform_attn_forward", &flash_deform_attn_forward,
+        "flash_deform_attn_forward");
+  m.def("flash_deform_attn_backward", &flash_deform_attn_backward,
+        "flash_deform_attn_backward");
+  m.def("dcnv4_forward", &dcnv4_forward, "dcnv4_forward");
+  m.def("dcnv4_backward", &dcnv4_backward, "dcnv4_backward");
+}

LICENSE

+MIT License
+
+Copyright (c) 2022 OpenGVLab
+
+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.