diff --git a/mediapipe/tasks/ios/text/language_detector/utils/BUILD b/mediapipe/tasks/ios/text/language_detector/utils/BUILD index 00a37e940..74de385c0 100644 --- a/mediapipe/tasks/ios/text/language_detector/utils/BUILD +++ b/mediapipe/tasks/ios/text/language_detector/utils/BUILD @@ -30,3 +30,15 @@ objc_library( "//mediapipe/tasks/ios/text/language_detector:MPPLanguageDetectorOptions", ], ) + +objc_library( + name = "MPPLanguageDetectorResultHelpers", + srcs = ["sources/MPPLanguageDetectorResult+Helpers.mm"], + hdrs = ["sources/MPPLanguageDetectorResult+Helpers.h"], + deps = [ + "//mediapipe/framework:packet", + "//mediapipe/tasks/cc/components/containers/proto:classifications_cc_proto", + "//mediapipe/tasks/ios/components/containers/utils:MPPClassificationResultHelpers", + "//mediapipe/tasks/ios/text/language_detector:MPPLanguageDetectorResult", + ], +) diff --git a/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.h b/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.h new file mode 100644 index 000000000..93fbfed48 --- /dev/null +++ b/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.h @@ -0,0 +1,28 @@ +// Copyright 2023 The MediaPipe Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#import "mediapipe/tasks/ios/text/language_Detector/sources/MPPLanguageDetectorResult.h" + +#include "mediapipe/framework/packet.h" + +NS_ASSUME_NONNULL_BEGIN + +@interface MPPLanguageDetectorResult (Helpers) + ++ (MPPLanguageDetectorResult *)languageDetectorResultWithClassificationsPacket: + (const mediapipe::Packet &)packet; + +@end + +NS_ASSUME_NONNULL_END diff --git a/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.mm b/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.mm new file mode 100644 index 000000000..a55fdb89e --- /dev/null +++ b/mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.mm @@ -0,0 +1,61 @@ +// Copyright 2023 The MediaPipe Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#import "mediapipe/tasks/ios/components/containers/utils/sources/MPPClassificationResult+Helpers.h" +#import "mediapipe/tasks/ios/text/language_detector/utils/sources/MPPLanguageDetectorResult+Helpers.h" + +#include "mediapipe/tasks/cc/components/containers/proto/classifications.pb.h" + +static const int kMicroSecondsPerMilliSecond = 1000; + +namespace { +using ClassificationResultProto = + ::mediapipe::tasks::components::containers::proto::ClassificationResult; +using ::mediapipe::Packet; +} // namespace + +#define int kMicroSecondsPerMilliSecond = 1000; + +@implementation MPPLanguageDetectorResult (Helpers) + ++ (MPPLanguageDetectorResult *)languageDetectorResultWithClassificationsPacket: + (const mediapipe::Packet &)packet { + MPPClassificationResult *classificationResult = [MPPClassificationResult + classificationResultWithProto:packet.Get()]; + + return [MPPLanguageDetectorResult + languageDetectorResultWithClassificationResult:classificationResult + timestampInMilliseconds:(NSInteger)(packet.Timestamp().Value() / + kMicroSecondsPerMilliSecond)]; +} + ++ (MPPLanguageDetectorResult *) + languageDetectorResultWithClassificationResult:(MPPClassificationResult *)classificationResult + timestampInMilliseconds:(NSInteger)timestampInMilliseconds { + NSArray *languagePredictions = + [NSMutableArray arrayWithCapacity:classificationResult.classifications.count]; + + if (classificationResult.classifications.count > 0) { + for (MPPCategory *category in classificationResult.classifications[0].categories) { + MPPLanguagePrediction *languagePrediction = + [[MPPLanguagePrediction alloc] initWithLanguageCode:category.categoryName + probability:category.score]; + } + } + + return [[MPPLanguageDetectorResult alloc] initWithLanguagePredictions:languagePredictions + timestampInMilliseconds:timestampInMilliseconds]; +} + +@end