Added MPPObjectDetectionResultHelpers
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@ -30,3 +30,13 @@ objc_library(
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],
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)
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objc_library(
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name = "MPPObjectDetectionResultHelpers",
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srcs = ["sources/MPPObjectDetectionResult+Helpers.mm"],
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hdrs = ["sources/MPPObjectDetectionResult+Helpers.h"],
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deps = [
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"//mediapipe/framework:packet",
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"//mediapipe/tasks/ios/components/containers/utils:MPPDetectionHelpers",
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"//mediapipe/tasks/ios/vision/object_detector:MPPObjectDetectionResult",
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],
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)
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@ -0,0 +1,38 @@
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// Copyright 2023 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "mediapipe/tasks/ios/vision/object_detector/sources/MPPObjectDetectionResult.h"
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#include "mediapipe/framework/packet.h"
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NS_ASSUME_NONNULL_BEGIN
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static const int kMicroSecondsPerMilliSecond = 1000;
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@interface MPPObjectDetectionResult (Helpers)
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/**
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* Creates an `MPPObjectDetectionResult` from a MediaPipe packet containing a
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* `std::vector<DetectionProto>`.
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*
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* @param packet a MediaPipe packet wrapping a `std::vector<DetectionProto>`.
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*
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* @return An `MPPObjectDetectionResult` object that contains a list of detections.
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*/
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+ (nullable MPPObjectDetectionResult *)objectDetectionResultWithDetectionsPacket:
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(const mediapipe::Packet &)packet;
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@end
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NS_ASSUME_NONNULL_END
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@ -0,0 +1,45 @@
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// Copyright 2023 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "mediapipe/tasks/ios/vision/object_detector/utils/sources/MPPObjectDetectionResult+Helpers.h"
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#import "mediapipe/tasks/ios/components/containers/utils/sources/MPPDetection+Helpers.h"
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namespace {
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using DetectionProto = ::mediapipe::Detection;
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using ::mediapipe::Packet;
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} // namespace
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@implementation MPPObjectDetectionResult (Helpers)
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+ (nullable MPPObjectDetectionResult *)objectDetectionResultWithDetectionsPacket:
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(const Packet &)packet {
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if (!packet.ValidateAsType<std::vector<DetectionProto>>().ok()) {
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return nil;
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}
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const std::vector<DetectionProto> &detectionProtos = packet.Get<std::vector<DetectionProto>>();
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NSMutableArray<MPPDetection *> *detections =
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[NSMutableArray arrayWithCapacity:(NSUInteger)detectionProtos.size()];
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for (const auto &detectionProto : detectionProtos) {
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[detections addObject:[MPPDetection detectionWithProto:detectionProto]];
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}
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return [[MPPObjectDetectionResult alloc]
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initWithDetections:detections
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timestampMs:(NSInteger)(packet.Timestamp().Value() / kMicroSecondsPerMilliSecond)];
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}
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@end
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