// Copyright (c) OpenMMLab. All rights reserved
#ifndef ROI_ALIGN_PYTORCH_H
#define ROI_ALIGN_PYTORCH_H
#include <torch/extension.h>
using namespace at;

#ifdef MMCV_WITH_CUDA
void roi_align_forward_cuda(Tensor input, Tensor rois, Tensor output,
                            Tensor argmax_y, Tensor argmax_x,
                            int aligned_height, int aligned_width,
                            float spatial_scale, int sampling_ratio,
                            int pool_mode, bool aligned);

void roi_align_backward_cuda(Tensor grad_output, Tensor rois, Tensor argmax_y,
                             Tensor argmax_x, Tensor grad_input,
                             int aligned_height, int aligned_width,
                             float spatial_scale, int sampling_ratio,
                             int pool_mode, bool aligned);
#endif

void roi_align_forward_cpu(Tensor input, Tensor rois, Tensor output,
                           Tensor argmax_y, Tensor argmax_x, int aligned_height,
                           int aligned_width, float spatial_scale,
                           int sampling_ratio, int pool_mode, bool aligned);

void roi_align_backward_cpu(Tensor grad_output, Tensor rois, Tensor argmax_y,
                            Tensor argmax_x, Tensor grad_input,
                            int aligned_height, int aligned_width,
                            float spatial_scale, int sampling_ratio,
                            int pool_mode, bool aligned);

#endif  // ROI_ALIGN_PYTORCH_H