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Updated iOS image classifier to use refactored vision task runner

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This commit is contained in:
Prianka Liz Kariat 2023-08-31 17:56:36 +05:30
parent e7a0ed84e6
commit ba685567dd
2 changed files with 77 additions and 124 deletions
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2
mediapipe/tasks/ios/vision/image_classifier/BUILD
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@ -57,7 +57,7 @@ objc_library(
"//mediapipe/tasks/ios/core:MPPTaskInfo",
"//mediapipe/tasks/ios/vision/core:MPPImage",
"//mediapipe/tasks/ios/vision/core:MPPVisionPacketCreator",
"//mediapipe/tasks/ios/vision/core:MPPVisionTaskRunner",
"//mediapipe/tasks/ios/vision/core:MPPVisionTaskRunnerRefactored",
"//mediapipe/tasks/ios/vision/image_classifier/utils:MPPImageClassifierOptionsHelpers",
"//mediapipe/tasks/ios/vision/image_classifier/utils:MPPImageClassifierResultHelpers",
],

199
mediapipe/tasks/ios/vision/image_classifier/sources/MPPImageClassifier.mm
View File

@ -18,7 +18,7 @@
#import "mediapipe/tasks/ios/common/utils/sources/NSString+Helpers.h"
#import "mediapipe/tasks/ios/core/sources/MPPTaskInfo.h"
#import "mediapipe/tasks/ios/vision/core/sources/MPPVisionPacketCreator.h"
#import "mediapipe/tasks/ios/vision/core/sources/MPPVisionTaskRunner.h"
#import "mediapipe/tasks/ios/vision/core/sources/MPPVisionTaskRunnerRefactored.h"
#import "mediapipe/tasks/ios/vision/image_classifier/utils/sources/MPPImageClassifierOptions+Helpers.h"
#import "mediapipe/tasks/ios/vision/image_classifier/utils/sources/MPPImageClassifierResult+Helpers.h"
@ -52,6 +52,13 @@ static const int kMicroSecondsPerMilliSecond = 1000;
} \
}
#define ImageClassifierResultWithOutputPacketMap(outputPacketMap) \
{ \
[MPPImageClassifierResult \
imageClassifierResultWithClassificationsPacket:outputPacketMap[kClassificationsStreamName \
.cppString]] \
}
@interface MPPImageClassifier () {
/** iOS Vision Task Runner */
MPPVisionTaskRunner *_visionTaskRunner;
@ -63,43 +70,7 @@ static const int kMicroSecondsPerMilliSecond = 1000;
@implementation MPPImageClassifier
- (void)processLiveStreamResult:(absl::StatusOr<PacketMap>)liveStreamResult {
if (![self.imageClassifierLiveStreamDelegate
respondsToSelector:@selector
(imageClassifier:didFinishClassificationWithResult:timestampInMilliseconds:error:)]) {
return;
}
NSError *callbackError = nil;
if (![MPPCommonUtils checkCppError:liveStreamResult.status() toError:&callbackError]) {
dispatch_async(_callbackQueue, ^{
[self.imageClassifierLiveStreamDelegate imageClassifier:self
didFinishClassificationWithResult:nil
timestampInMilliseconds:Timestamp::Unset().Value()
error:callbackError];
});
return;
}
PacketMap &outputPacketMap = liveStreamResult.value();
if (outputPacketMap[kImageOutStreamName.cppString].IsEmpty()) {
return;
}
MPPImageClassifierResult *result = [MPPImageClassifierResult
imageClassifierResultWithClassificationsPacket:outputPacketMap[kClassificationsStreamName
.cppString]];
NSInteger timeStampInMilliseconds =
outputPacketMap[kImageOutStreamName.cppString].Timestamp().Value() /
kMicroSecondsPerMilliSecond;
dispatch_async(_callbackQueue, ^{
[self.imageClassifierLiveStreamDelegate imageClassifier:self
didFinishClassificationWithResult:result
timestampInMilliseconds:timeStampInMilliseconds
error:callbackError];
});
}
#pragma mark - Public
- (instancetype)initWithOptions:(MPPImageClassifierOptions *)options error:(NSError **)error {
self = [super init];
@ -143,11 +114,13 @@ static const int kMicroSecondsPerMilliSecond = 1000;
};
}
_visionTaskRunner =
[[MPPVisionTaskRunner alloc] initWithCalculatorGraphConfig:[taskInfo generateGraphConfig]
runningMode:options.runningMode
packetsCallback:std::move(packetsCallback)
error:error];
_visionTaskRunner = [[MPPVisionTaskRunner alloc] initWithTaskInfo:taskInfo
runningMode:options.runningMode
roiAllowed:YES
packetsCallback:std::move(packetsCallback)
imageInputStreamName:kImageInStreamName
normRectInputStreamName:kNormRectStreamName
error:error];
if (!_visionTaskRunner) {
return nil;
@ -167,90 +140,28 @@ static const int kMicroSecondsPerMilliSecond = 1000;
- (nullable MPPImageClassifierResult *)classifyImage:(MPPImage *)image
regionOfInterest:(CGRect)roi
error:(NSError **)error {
std::optional<NormalizedRect> rect =
[_visionTaskRunner normalizedRectWithRegionOfInterest:roi
imageOrientation:image.orientation
imageSize:CGSizeMake(image.width, image.height)
error:error];
if (!rect.has_value()) {
return nil;
}
std::optional<PacketMap> outputPacketMap = [_visionTaskRunner processImage:image
regionOfInterest:roi
error:error];
Packet imagePacket = [MPPVisionPacketCreator createPacketWithMPPImage:image error:error];
if (imagePacket.IsEmpty()) {
return nil;
}
Packet normalizedRectPacket =
[MPPVisionPacketCreator createPacketWithNormalizedRect:rect.value()];
PacketMap inputPacketMap = InputPacketMap(imagePacket, normalizedRectPacket);
std::optional<PacketMap> outputPacketMap = [_visionTaskRunner processImagePacketMap:inputPacketMap
error:error];
if (!outputPacketMap.has_value()) {
return nil;
}
return
[MPPImageClassifierResult imageClassifierResultWithClassificationsPacket:
outputPacketMap.value()[kClassificationsStreamName.cppString]];
return [MPPImageClassifier imageClassifierResultWithOptionalOutputPacketMap:outputPacketMap];
}
- (nullable MPPImageClassifierResult *)classifyImage:(MPPImage *)image error:(NSError **)error {
return [self classifyImage:image regionOfInterest:CGRectZero error:error];
}
- (std::optional<PacketMap>)inputPacketMapWithMPPImage:(MPPImage *)image
timestampInMilliseconds:(NSInteger)timestampInMilliseconds
regionOfInterest:(CGRect)roi
error:(NSError **)error {
std::optional<NormalizedRect> rect =
[_visionTaskRunner normalizedRectWithRegionOfInterest:roi
imageOrientation:image.orientation
imageSize:CGSizeMake(image.width, image.height)
error:error];
if (!rect.has_value()) {
return std::nullopt;
}
Packet imagePacket = [MPPVisionPacketCreator createPacketWithMPPImage:image
timestampInMilliseconds:timestampInMilliseconds
error:error];
if (imagePacket.IsEmpty()) {
return std::nullopt;
}
Packet normalizedRectPacket =
[MPPVisionPacketCreator createPacketWithNormalizedRect:rect.value()
timestampInMilliseconds:timestampInMilliseconds];
PacketMap inputPacketMap = InputPacketMap(imagePacket, normalizedRectPacket);
return inputPacketMap;
}
- (nullable MPPImageClassifierResult *)classifyVideoFrame:(MPPImage *)image
timestampInMilliseconds:(NSInteger)timestampInMilliseconds
regionOfInterest:(CGRect)roi
error:(NSError **)error {
std::optional<PacketMap> inputPacketMap = [self inputPacketMapWithMPPImage:image
timestampInMilliseconds:timestampInMilliseconds
regionOfInterest:roi
error:error];
if (!inputPacketMap.has_value()) {
return nil;
}
std::optional<PacketMap> outputPacketMap =
[_visionTaskRunner processVideoFramePacketMap:inputPacketMap.value() error:error];
[_visionTaskRunner processVideoFrame:image
regionOfInterest:roi
timestampInMilliseconds:timestampInMilliseconds
error:error];
if (!outputPacketMap.has_value()) {
return nil;
}
return
[MPPImageClassifierResult imageClassifierResultWithClassificationsPacket:
outputPacketMap.value()[kClassificationsStreamName.cppString]];
return [MPPImageClassifier imageClassifierResultWithOptionalOutputPacketMap:outputPacketMap];
}
- (nullable MPPImageClassifierResult *)classifyVideoFrame:(MPPImage *)image
@ -266,15 +177,10 @@ static const int kMicroSecondsPerMilliSecond = 1000;
timestampInMilliseconds:(NSInteger)timestampInMilliseconds
regionOfInterest:(CGRect)roi
error:(NSError **)error {
std::optional<PacketMap> inputPacketMap = [self inputPacketMapWithMPPImage:image
timestampInMilliseconds:timestampInMilliseconds
regionOfInterest:roi
error:error];
if (!inputPacketMap.has_value()) {
return NO;
}
return [_visionTaskRunner processLiveStreamPacketMap:inputPacketMap.value() error:error];
return [_visionTaskRunner processLiveStreamImage:image
regionOfInterest:roi
timestampInMilliseconds:timestampInMilliseconds
error:error];
}
- (BOOL)classifyAsyncImage:(MPPImage *)image
@ -286,4 +192,51 @@ static const int kMicroSecondsPerMilliSecond = 1000;
error:error];
}
#pragma mark - Private
- (void)processLiveStreamResult:(absl::StatusOr<PacketMap>)liveStreamResult {
if (![self.imageClassifierLiveStreamDelegate
respondsToSelector:@selector
(imageClassifier:didFinishClassificationWithResult:timestampInMilliseconds:error:)]) {
return;
}
NSError *callbackError = nil;
if (![MPPCommonUtils checkCppError:liveStreamResult.status() toError:&callbackError]) {
dispatch_async(_callbackQueue, ^{
[self.imageClassifierLiveStreamDelegate imageClassifier:self
didFinishClassificationWithResult:nil
timestampInMilliseconds:Timestamp::Unset().Value()
error:callbackError];
});
return;
}
PacketMap &outputPacketMap = liveStreamResult.value();
if (outputPacketMap[kImageOutStreamName.cppString].IsEmpty()) {
return;
}
MPPImageClassifierResult *result = ImageClassifierResultWithOutputPacketMap(outputPacketMap);
NSInteger timeStampInMilliseconds =
outputPacketMap[kImageOutStreamName.cppString].Timestamp().Value() /
kMicroSecondsPerMilliSecond;
dispatch_async(_callbackQueue, ^{
[self.imageClassifierLiveStreamDelegate imageClassifier:self
didFinishClassificationWithResult:result
timestampInMilliseconds:timeStampInMilliseconds
error:callbackError];
});
}
+ (nullable MPPImageClassifierResult *)imageClassifierResultWithOptionalOutputPacketMap:
(std::optional<PacketMap>)outputPacketMap {
if (!outputPacketMap.has_value()) {
return nil;
}
return ImageClassifierResultWithOutputPacketMap(outputPacketMap.value());
}
@end