Tensor.h - mozsearch

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef DOM_TENSOR_H_

#define DOM_TENSOR_H_

#include "mozilla/dom/BindingDeclarations.h"

#include "mozilla/dom/ONNXBinding.h"

#include "js/TypeDecls.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/dom/onnxruntime_c_api.h"

#include "nsCycleCollectionParticipant.h"

#include "nsWrapperCache.h"

#include "nsIGlobalObject.h"

namespace mozilla::dom {

class Promise;

class Tensor final : public nsISupports, public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Tensor)

 public:

  // Used when created from js using a regular js array, containing numbers.

  Tensor(const GlobalObject& global, const nsACString& type,

         const nsTArray<uint8_t>& data, const Sequence<int32_t>& dims);

  // Used when created from JS, e.g. input tensor, with a type array (it can be

  // of any type)

  Tensor(const GlobalObject& global, const nsACString& type,

         const ArrayBufferView& data, const Sequence<int32_t>& dims);

  // Used when created from C++, e.g. output tensor

  Tensor(const GlobalObject& aGlobal, ONNXTensorElementDataType aType,

         nsTArray<uint8_t> aData, nsTArray<int64_t> aDims);

  static already_AddRefed<Tensor> Constructor(

      const GlobalObject& global, const nsACString& type,

      const ArrayBufferViewOrAnySequence& data, const Sequence<int32_t>& dims,

      ErrorResult& aRv);

 protected:

  ~Tensor() = default;

 public:

  nsIGlobalObject* GetParentObject() const { return mGlobal; };

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  void GetDims(nsTArray<int32_t>& aRetVal);

  void SetDims(const nsTArray<int32_t>& aVal);

  void GetType(nsCString& aRetVal) const;

  void GetData(JSContext* cx, JS::MutableHandle<JSObject*> aRetVal) const;

  TensorDataLocation Location() const;

  already_AddRefed<Promise> GetData(const Optional<bool>& releaseData);

  void Dispose();

  uint8_t* Data() { return mData.Elements(); }

  size_t Size() { return mData.Length(); }

  int32_t* Dims() { return mDims.Elements(); }

  size_t DimsSize() { return mDims.Length(); }

  ONNXTensorElementDataType Type() const;

  nsCString TypeString() const;

  nsLiteralCString ONNXTypeToString(ONNXTensorElementDataType aType) const;

  nsCString ToString() const;

  static ONNXTensorElementDataType StringToONNXDataType(

      const nsACString& aString);

  static size_t DataTypeSize(ONNXTensorElementDataType aType);

 private:

  nsCOMPtr<nsIGlobalObject> mGlobal;

  nsCString mType;

  nsTArray<uint8_t> mData;

  nsTArray<int32_t> mDims;

};

}  // namespace mozilla::dom

#endif  // DOM_TENSOR_H_