chromium/services/webnn/coreml/context_impl_coreml.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SERVICES_WEBNN_COREML_CONTEXT_IMPL_COREML_H_
#define SERVICES_WEBNN_COREML_CONTEXT_IMPL_COREML_H_

#include "base/memory/weak_ptr.h"
#include "services/webnn/webnn_buffer_impl.h"
#include "services/webnn/webnn_context_impl.h"
#include "services/webnn/webnn_graph_impl.h"

namespace webnn::coreml {

// `ContextImplCoreml` is created by `WebNNContextProviderImpl` and responsible
// for creating a `GraphImplCoreml` for the CoreML backend on macOS. Mac OS
// 13.0+ is required for model compilation
// https://developer.apple.com/documentation/coreml/mlmodel/3931182-compilemodel
// Mac OS 14.0+ is required to support WebNN logical binary operators because
// the cast operator does not support casting to uint8 prior to Mac OS 14.0.
// CoreML returns bool tensors for logical operators which need to be cast to
// uint8 tensors to match WebNN expectations.
class API_AVAILABLE(macos(14.0)) ContextImplCoreml final
    : public WebNNContextImpl {
 public:
  ContextImplCoreml(mojo::PendingReceiver<mojom::WebNNContext> receiver,
                    WebNNContextProviderImpl* context_provider,
                    mojom::CreateContextOptionsPtr options);

  ContextImplCoreml(const WebNNContextImpl&) = delete;
  ContextImplCoreml& operator=(const ContextImplCoreml&) = delete;

  ~ContextImplCoreml() override;

  // WebNNContextImpl:
  base::WeakPtr<WebNNContextImpl> AsWeakPtr() override;

 private:
  void CreateGraphImpl(
      mojom::GraphInfoPtr graph_info,
      WebNNGraphImpl::ComputeResourceInfo compute_resource_info,
      CreateGraphImplCallback callback) override;

  void CreateBufferImpl(
      mojo::PendingAssociatedReceiver<mojom::WebNNBuffer> receiver,
      mojom::BufferInfoPtr buffer_info,
      CreateBufferImplCallback callback) override;

  base::WeakPtrFactory<ContextImplCoreml> weak_factory_{this};
};

}  // namespace webnn::coreml

#endif  // SERVICES_WEBNN_COREML_CONTEXT_IMPL_COREML_H_