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Updated iOS object detector to use delegates instead of callbacks for async calls

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This commit is contained in:
Prianka Liz Kariat
2023-05-04 17:03:40 +05:30
parent a21c08bf4d
commit ab135190e5
5 changed files with 148 additions and 55 deletions
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mediapipe/tasks/ios/test/vision/object_detector/MPPObjectDetectorTests.m
+53 -41
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@@ -25,6 +25,8 @@ static NSDictionary *const kCatsAndDogsRotatedImage =
static NSString *const kExpectedErrorDomain = @"com.google.mediapipe.tasks";
static const float pixelDifferenceTolerance = 10.0f;
static const float scoreDifferenceTolerance = 0.02f;
static NSString *const kLiveStreamTestsDictObjectDetectorKey = @"object_detector";
static NSString *const kLiveStreamTestsDictExpectationKey = @"expectation";
#define AssertEqualErrors(error, expectedError) \
XCTAssertNotNil(error); \
@@ -58,7 +60,10 @@ static const float scoreDifferenceTolerance = 0.02f;
XCTAssertEqualWithAccuracy(boundingBox.size.height, expectedBoundingBox.size.height, \
pixelDifferenceTolerance, @"index i = %d", idx);
@interface MPPObjectDetectorTests : XCTestCase
@interface MPPObjectDetectorTests : XCTestCase <MPPObjectDetectorLiveStreamDelegate> {
NSDictionary *liveStreamSucceedsTestDict;
NSDictionary *outOfOrderTimestampTestDict;
}
@end
@implementation MPPObjectDetectorTests
@@ -446,31 +451,28 @@ static const float scoreDifferenceTolerance = 0.02f;
#pragma mark Running Mode Tests
- (void)testCreateObjectDetectorFailsWithResultListenerInNonLiveStreamMode {
- (void)testCreateObjectDetectorFailsWithDelegateInNonLiveStreamMode {
MPPRunningMode runningModesToTest[] = {MPPRunningModeImage, MPPRunningModeVideo};
for (int i = 0; i < sizeof(runningModesToTest) / sizeof(runningModesToTest[0]); i++) {
MPPObjectDetectorOptions *options = [self objectDetectorOptionsWithModelName:kModelName];
options.runningMode = runningModesToTest[i];
options.completion =
^(MPPObjectDetectionResult *result, NSInteger timestampInMilliseconds, NSError *error) {
};
options.objectDetectorLiveStreamDelegate = self;
[self
assertCreateObjectDetectorWithOptions:options
failsWithExpectedError:
[NSError
errorWithDomain:kExpectedErrorDomain
code:MPPTasksErrorCodeInvalidArgumentError
userInfo:@{
NSLocalizedDescriptionKey :
@"The vision task is in image or video mode, a "
@"user-defined result callback should not be provided."
}]];
[NSError errorWithDomain:kExpectedErrorDomain
code:MPPTasksErrorCodeInvalidArgumentError
userInfo:@{
NSLocalizedDescriptionKey :
@"The vision task is in image or video mode. The "
@"delegate must not be set in the task's options."
}]];
}
}
- (void)testCreateObjectDetectorFailsWithMissingResultListenerInLiveStreamMode {
- (void)testCreateObjectDetectorFailsWithMissingDelegateInLiveStreamMode {
MPPObjectDetectorOptions *options = [self objectDetectorOptionsWithModelName:kModelName];
options.runningMode = MPPRunningModeLiveStream;
@@ -481,8 +483,11 @@ static const float scoreDifferenceTolerance = 0.02f;
code:MPPTasksErrorCodeInvalidArgumentError
userInfo:@{
NSLocalizedDescriptionKey :
@"The vision task is in live stream mode, a "
@"user-defined result callback must be provided."
@"The vision task is in live stream mode. An "
@"object must be set as the "
@"delegate of the task in its options to ensure "
@"asynchronous delivery of "
@"results."
}]];
}
@@ -563,10 +568,7 @@ static const float scoreDifferenceTolerance = 0.02f;
MPPObjectDetectorOptions *options = [self objectDetectorOptionsWithModelName:kModelName];
options.runningMode = MPPRunningModeLiveStream;
options.completion =
^(MPPObjectDetectionResult *result, NSInteger timestampInMilliseconds, NSError *error) {
};
options.objectDetectorLiveStreamDelegate = self;
MPPObjectDetector *objectDetector = [self objectDetectorWithOptionsSucceeds:options];
@@ -631,23 +633,17 @@ static const float scoreDifferenceTolerance = 0.02f;
options.maxResults = maxResults;
options.runningMode = MPPRunningModeLiveStream;
options.objectDetectorLiveStreamDelegate = self;
XCTestExpectation *expectation = [[XCTestExpectation alloc]
initWithDescription:@"detectWithOutOfOrderTimestampsAndLiveStream"];
expectation.expectedFulfillmentCount = 1;
options.completion =
^(MPPObjectDetectionResult *result, NSInteger timestampInMilliseconds, NSError *error) {
[self assertObjectDetectionResult:result
isEqualToExpectedResult:
[MPPObjectDetectorTests
expectedDetectionResultForCatsAndDogsImageWithTimestampInMilliseconds:
timestampInMilliseconds]
expectedDetectionsCount:maxResults];
[expectation fulfill];
};
MPPObjectDetector *objectDetector = [self objectDetectorWithOptionsSucceeds:options];
liveStreamSucceedsTestDict = @{
kLiveStreamTestsDictObjectDetectorKey : objectDetector,
kLiveStreamTestsDictExpectationKey : expectation
};
MPPImage *image = [self imageWithFileInfo:kCatsAndDogsImage];
@@ -693,19 +689,15 @@ static const float scoreDifferenceTolerance = 0.02f;
expectation.expectedFulfillmentCount = iterationCount + 1;
expectation.inverted = YES;
options.completion =
^(MPPObjectDetectionResult *result, NSInteger timestampInMilliseconds, NSError *error) {
[self assertObjectDetectionResult:result
isEqualToExpectedResult:
[MPPObjectDetectorTests
expectedDetectionResultForCatsAndDogsImageWithTimestampInMilliseconds:
timestampInMilliseconds]
expectedDetectionsCount:maxResults];
[expectation fulfill];
};
options.objectDetectorLiveStreamDelegate = self;
MPPObjectDetector *objectDetector = [self objectDetectorWithOptionsSucceeds:options];
liveStreamSucceedsTestDict = @{
kLiveStreamTestsDictObjectDetectorKey : objectDetector,
kLiveStreamTestsDictExpectationKey : expectation
};
// TODO: Mimic initialization from CMSampleBuffer as live stream mode is most likely to be used
// with the iOS camera. AVCaptureVideoDataOutput sample buffer delegates provide frames of type
// `CMSampleBuffer`.
@@ -718,4 +710,24 @@ static const float scoreDifferenceTolerance = 0.02f;
[self waitForExpectations:@[ expectation ] timeout:0.5];
}
#pragma mark MPPObjectDetectorLiveStreamDelegate Methods
- (void)objectDetector:(MPPObjectDetector *)objectDetector
didFinishDetectionWithResult:(MPPObjectDetectionResult *)objectDetectionResult
timestampInMilliseconds:(NSInteger)timestampInMilliseconds
error:(NSError *)error {
NSInteger maxResults = 4;
[self assertObjectDetectionResult:objectDetectionResult
isEqualToExpectedResult:
[MPPObjectDetectorTests
expectedDetectionResultForCatsAndDogsImageWithTimestampInMilliseconds:
timestampInMilliseconds]
expectedDetectionsCount:maxResults];
if (objectDetector == outOfOrderTimestampTestDict[kLiveStreamTestsDictObjectDetectorKey]) {
[outOfOrderTimestampTestDict[kLiveStreamTestsDictExpectationKey] fulfill];
} else if (objectDetector == liveStreamSucceedsTestDict[kLiveStreamTestsDictObjectDetectorKey]) {
[liveStreamSucceedsTestDict[kLiveStreamTestsDictExpectationKey] fulfill];
}
}
@end