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#ifndef CAFFE2_OPERATORS_ROI_ALIGN_OP_H_
#define CAFFE2_OPERATORS_ROI_ALIGN_OP_H_
#include "caffe2/core/context.h"
#include "caffe2/core/export_caffe2_op_to_c10.h"
#include "caffe2/core/logging.h"
#include "caffe2/core/operator.h"
C10_DECLARE_EXPORT_CAFFE2_OP_TO_C10(RoIAlign)
namespace caffe2 {
template <typename T, class Context>
class RoIAlignOp final : public Operator<Context> {
public:
USE_OPERATOR_CONTEXT_FUNCTIONS;
template <class... Args>
explicit RoIAlignOp(Args&&... args)
: Operator<Context>(std::forward<Args>(args)...),
order_(StringToStorageOrder(
this->template GetSingleArgument<string>("order", "NCHW"))),
OP_SINGLE_ARG(float, "spatial_scale", spatial_scale_, 1.0f),
OP_SINGLE_ARG(int, "pooled_h", pooled_h_, 1),
OP_SINGLE_ARG(int, "pooled_w", pooled_w_, 1),
OP_SINGLE_ARG(int, "sampling_ratio", sampling_ratio_, -1),
OP_SINGLE_ARG(bool, "aligned", aligned_, false) {
TORCH_DCHECK_GT(spatial_scale_, 0.0f);
TORCH_DCHECK_GT(pooled_h_, 0);
TORCH_DCHECK_GT(pooled_w_, 0);
DCHECK(order_ == StorageOrder::NCHW || order_ == StorageOrder::NHWC);
}
bool RunOnDevice() override {
const auto& X = Input(0);
const auto& R = Input(1);
CAFFE_ENFORCE_EQ(X.dim(), 4);
CAFFE_ENFORCE_EQ(R.dim(), 2);
const int64_t roi_cols = R.size(1);
CAFFE_ENFORCE(roi_cols == 4 || roi_cols == 5);
const int64_t N = R.size(0);
const int64_t C = X.size(order_ == StorageOrder::NCHW ? 1 : 3);
const int64_t H = X.size(order_ == StorageOrder::NCHW ? 2 : 1);
const int64_t W = X.size(order_ == StorageOrder::NCHW ? 3 : 2);
const std::vector<int64_t> Y_sizes = order_ == StorageOrder::NCHW
? std::vector<int64_t>{N, C, pooled_h_, pooled_w_}
: std::vector<int64_t>{N, pooled_h_, pooled_w_, C};
auto* Y = Output(0, Y_sizes, at::dtype<T>());
if (N == 0) {
return true;
}
const T* X_data = X.template data<T>();
const T* R_data = R.template data<T>();
T* Y_data = Y->template mutable_data<T>();
return order_ == StorageOrder::NCHW
? RunOnDeviceWithOrderNCHW(N, C, H, W, roi_cols, X_data, R_data, Y_data)
: RunOnDeviceWithOrderNHWC(
N, C, H, W, roi_cols, X_data, R_data, Y_data);
}
private:
bool RunOnDeviceWithOrderNCHW(
int64_t N,
int64_t C,
int64_t H,
int64_t W,
int64_t roi_cols,
const T* X,
const T* R,
T* Y);
bool RunOnDeviceWithOrderNHWC(
int64_t N,
int64_t C,
int64_t H,
int64_t W,
int64_t roi_cols,
const T* X,
const T* R,
T* Y);
const StorageOrder order_;
const float spatial_scale_;
const int pooled_h_;
const int pooled_w_;
const int sampling_ratio_;
const bool aligned_;
};
} // namespace caffe2
#endif // CAFFE2_OPERATORS_ROI_ALIGN_OP_H_
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