Add transpose (#82)

sherpa-onnx/csrc/transpose.h

@@ -0,0 +1,22 @@
+// sherpa-onnx/csrc/transpose.h
+//
+// Copyright (c)  2023  Xiaomi Corporation
+#ifndef SHERPA_ONNX_CSRC_TRANSPOSE_H_
+#define SHERPA_ONNX_CSRC_TRANSPOSE_H_
+
+#include "onnxruntime_cxx_api.h"  // NOLINT
+
+namespace sherpa_onnx {
+/** Transpose a 3-D tensor from shape (B, T, C) to (T, B, C).
+ *
+ * @param allocator
+ * @param v A 3-D tensor of shape (B, T, C). Its dataype is T.
+ *
+ * @return Return a 3-D tensor of shape (T, B, C). Its datatype is T.
+ */
+template <typename T = float>
+Ort::Value Transpose01(OrtAllocator *allocator, const Ort::Value *v);
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_TRANSPOSE_H_