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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SERVICES_SHAPE_DETECTION_DETECTION_UTILS_MAC_H_
#define SERVICES_SHAPE_DETECTION_DETECTION_UTILS_MAC_H_
#import <CoreImage/CoreImage.h>
#import <Foundation/Foundation.h>
#import <Vision/Vision.h>
#include <os/availability.h>
#include <memory>
#include "base/callback.h"
#include "base/mac/scoped_nsobject.h"
#include "base/macros.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/geometry/rect_f.h"
namespace shape_detection {
// Takes a ScopedSharedBufferHandle with dimensions and produces a new CIImage
// with the same contents, or a null scoped_nsobject is something goes wrong.
base::scoped_nsobject<CIImage> CreateCIImageFromSkBitmap(
const SkBitmap& bitmap);
gfx::RectF ConvertCGToGfxCoordinates(CGRect bounds, int height);
// This class submits an image analysis request for asynchronous execution on a
// dispatch queue with default priority.
class API_AVAILABLE(macos(10.13)) VisionAPIAsyncRequestMac {
public:
// A callback run when the asynchronous execution completes. The callback is
// repeating for the instance.
using Callback =
base::RepeatingCallback<void(VNRequest* request, NSError* error)>;
VisionAPIAsyncRequestMac(const VisionAPIAsyncRequestMac&) = delete;
VisionAPIAsyncRequestMac& operator=(const VisionAPIAsyncRequestMac&) = delete;
~VisionAPIAsyncRequestMac();
// Creates an VisionAPIAsyncRequestMac instance which sets |callback| to be
// called when the asynchronous action completes.
static std::unique_ptr<VisionAPIAsyncRequestMac> Create(
Class request_class,
Callback callback,
NSArray<VNBarcodeSymbology>* symbology_hints = nullptr);
// Processes asynchronously an image analysis request and returns results with
// |callback_| when the asynchronous request completes, the callers should
// only enqueue one request at a time.
bool PerformRequest(const SkBitmap& bitmap);
private:
VisionAPIAsyncRequestMac(Callback callback,
Class request_class,
NSArray<VNBarcodeSymbology>* symbology_hints);
base::scoped_nsobject<VNRequest> request_;
const Callback callback_;
};
} // namespace shape_detection
#endif // SERVICES_SHAPE_DETECTION_DETECTION_UTILS_MAC_H_
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