Index: services/shape_detection/text_detection_impl_mac.mm |
diff --git a/services/shape_detection/text_detection_impl_mac.mm b/services/shape_detection/text_detection_impl_mac.mm |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3894770ada51c1c4a0e20e75e3a7341d5c1197cc |
--- /dev/null |
+++ b/services/shape_detection/text_detection_impl_mac.mm |
@@ -0,0 +1,83 @@ |
+// 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/mac_util.h" |
+#include "base/mac/scoped_cftyperef.h" |
+#include "base/mac/sdk_forward_declarations.h" |
+#include "base/strings/sys_string_conversions.h" |
+#include "media/capture/video/scoped_result_callback.h" |
+#include "mojo/public/cpp/bindings/strong_binding.h" |
+#include "services/shape_detection/detection_utils_mac.h" |
+#include "services/shape_detection/text_detection_impl.h" |
+ |
+namespace shape_detection { |
+ |
+namespace { |
+ |
+void RunCallbackWithResults( |
+ const mojom::TextDetection::DetectCallback& callback, |
+ std::vector<mojom::TextDetectionResultPtr> results) { |
+ callback.Run(std::move(results)); |
+} |
+ |
+void RunCallbackWithNoResults( |
+ const mojom::TextDetection::DetectCallback& callback) { |
+ callback.Run(std::vector<mojom::TextDetectionResultPtr>()); |
+} |
+ |
+} // anonymous namespace |
+ |
+// static |
+void TextDetectionImpl::Create(mojom::TextDetectionRequest request) { |
+ // Text detection needs at least MAC OS X 10.11. |
+ if (!base::mac::IsAtLeastOS10_11()) |
+ return; |
+ mojo::MakeStrongBinding(base::MakeUnique<TextDetectionImplMac>(), |
+ std::move(request)); |
+} |
+ |
+TextDetectionImplMac::TextDetectionImplMac() { |
+ NSDictionary* const opts = @{CIDetectorAccuracy : CIDetectorAccuracyHigh}; |
+ detector_.reset([[CIDetector detectorOfType:CIDetectorTypeText |
+ context:nil |
+ options:opts] retain]); |
+} |
+ |
+TextDetectionImplMac::~TextDetectionImplMac() {} |
+ |
+void TextDetectionImplMac::Detect(mojo::ScopedSharedBufferHandle frame_data, |
+ uint32_t width, |
+ uint32_t height, |
+ const DetectCallback& callback) { |
+ DCHECK(base::mac::IsAtLeastOS10_11()); |
+ media::ScopedResultCallback<DetectCallback> scoped_callback( |
+ base::Bind(&RunCallbackWithResults, callback), |
+ base::Bind(&RunCallbackWithNoResults)); |
+ |
+ base::scoped_nsobject<CIImage> ci_image = |
+ CreateCIImageFromSharedMemory(std::move(frame_data), width, height); |
+ if (!ci_image) |
+ return; |
+ |
+ NSArray* const features = [detector_ featuresInImage:ci_image]; |
+ |
+ std::vector<mojom::TextDetectionResultPtr> results; |
+ for (CIRectangleFeature* const f in features) { |
+ // CIRectangleFeature only has bounding box information. |
+ auto result = mojom::TextDetectionResult::New(); |
+ // In the default Core Graphics coordinate space, the origin is located |
+ // in the lower-left corner, and thus |ci_image| is flipped vertically. |
+ // We need to adjust |y| coordinate of bounding box before sending it. |
+ gfx::RectF boundingbox(f.bounds.origin.x, |
+ height - f.bounds.origin.y - f.bounds.size.height, |
+ f.bounds.size.width, f.bounds.size.height); |
+ result->bounding_box = std::move(boundingbox); |
+ results.push_back(std::move(result)); |
+ } |
+ scoped_callback.Run(std::move(results)); |
+} |
+ |
+} // namespace shape_detection |