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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.
- #include "services/shape_detection/text_detection_impl_mac.h"
- #include "base/mac/scoped_cftyperef.h"
- #include "base/strings/sys_string_conversions.h"
- #include "mojo/public/cpp/bindings/pending_receiver.h"
- #include "mojo/public/cpp/bindings/self_owned_receiver.h"
- #include "services/shape_detection/detection_utils_mac.h"
- #include "services/shape_detection/text_detection_impl.h"
- namespace shape_detection {
- // static
- void TextDetectionImpl::Create(
- mojo::PendingReceiver<mojom::TextDetection> receiver) {
- mojo::MakeSelfOwnedReceiver(std::make_unique<TextDetectionImplMac>(),
- std::move(receiver));
- }
- TextDetectionImplMac::TextDetectionImplMac() {
- NSDictionary* const opts = @{CIDetectorAccuracy : CIDetectorAccuracyHigh};
- detector_.reset(
- [[CIDetector detectorOfType:CIDetectorTypeText context:nil options:opts]
- retain]);
- }
- TextDetectionImplMac::~TextDetectionImplMac() {}
- void TextDetectionImplMac::Detect(const SkBitmap& bitmap,
- DetectCallback callback) {
- base::scoped_nsobject<CIImage> ci_image = CreateCIImageFromSkBitmap(bitmap);
- if (!ci_image) {
- std::move(callback).Run({});
- return;
- }
- NSArray* const features = [detector_ featuresInImage:ci_image];
- const int height = bitmap.height();
- std::vector<mojom::TextDetectionResultPtr> results;
- for (CIRectangleFeature* const f in features) {
- // CIRectangleFeature only has bounding box information.
- auto result = mojom::TextDetectionResult::New();
- result->bounding_box = ConvertCGToGfxCoordinates(f.bounds, height);
- // Enumerate corner points starting from top-left in clockwise fashion:
- // https://wicg.github.io/shape-detection-api/text.html#dom-detectedtext-cornerpoints
- result->corner_points.emplace_back(f.topLeft.x, height - f.topLeft.y);
- result->corner_points.emplace_back(f.topRight.x, height - f.topRight.y);
- result->corner_points.emplace_back(f.bottomRight.x,
- height - f.bottomRight.y);
- result->corner_points.emplace_back(f.bottomLeft.x, height - f.bottomLeft.y);
- results.push_back(std::move(result));
- }
- std::move(callback).Run(std::move(results));
- }
- } // namespace shape_detection
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