Added MPPObjectDetectionResultHelpers

This commit is contained in:
Prianka Liz Kariat 2023-04-06 21:40:09 +05:30
parent 79c8cfb730
commit b01b3b84c4
3 changed files with 93 additions and 0 deletions

View File

@ -30,3 +30,13 @@ objc_library(
], ],
) )
objc_library(
name = "MPPObjectDetectionResultHelpers",
srcs = ["sources/MPPObjectDetectionResult+Helpers.mm"],
hdrs = ["sources/MPPObjectDetectionResult+Helpers.h"],
deps = [
"//mediapipe/framework:packet",
"//mediapipe/tasks/ios/components/containers/utils:MPPDetectionHelpers",
"//mediapipe/tasks/ios/vision/object_detector:MPPObjectDetectionResult",
],
)

View File

@ -0,0 +1,38 @@
// 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/vision/object_detector/sources/MPPObjectDetectionResult.h"
#include "mediapipe/framework/packet.h"
NS_ASSUME_NONNULL_BEGIN
static const int kMicroSecondsPerMilliSecond = 1000;
@interface MPPObjectDetectionResult (Helpers)
/**
* Creates an `MPPObjectDetectionResult` from a MediaPipe packet containing a
* `std::vector<DetectionProto>`.
*
* @param packet a MediaPipe packet wrapping a `std::vector<DetectionProto>`.
*
* @return An `MPPObjectDetectionResult` object that contains a list of detections.
*/
+ (nullable MPPObjectDetectionResult *)objectDetectionResultWithDetectionsPacket:
(const mediapipe::Packet &)packet;
@end
NS_ASSUME_NONNULL_END

View File

@ -0,0 +1,45 @@
// 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/vision/object_detector/utils/sources/MPPObjectDetectionResult+Helpers.h"
#import "mediapipe/tasks/ios/components/containers/utils/sources/MPPDetection+Helpers.h"
namespace {
using DetectionProto = ::mediapipe::Detection;
using ::mediapipe::Packet;
} // namespace
@implementation MPPObjectDetectionResult (Helpers)
+ (nullable MPPObjectDetectionResult *)objectDetectionResultWithDetectionsPacket:
(const Packet &)packet {
if (!packet.ValidateAsType<std::vector<DetectionProto>>().ok()) {
return nil;
}
const std::vector<DetectionProto> &detectionProtos = packet.Get<std::vector<DetectionProto>>();
NSMutableArray<MPPDetection *> *detections =
[NSMutableArray arrayWithCapacity:(NSUInteger)detectionProtos.size()];
for (const auto &detectionProto : detectionProtos) {
[detections addObject:[MPPDetection detectionWithProto:detectionProto]];
}
return [[MPPObjectDetectionResult alloc]
initWithDetections:detections
timestampMs:(NSInteger)(packet.Timestamp().Value() / kMicroSecondsPerMilliSecond)];
}
@end