Added vision task runner

This commit is contained in:
Prianka Liz Kariat 2023-02-13 19:55:12 +05:30
parent 1623b591b7
commit 328fe4ed39
3 changed files with 139 additions and 0 deletions

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@ -27,3 +27,16 @@ objc_library(
module_name = "MPPRunningMode",
)
objc_library(
name = "MPPVisionTaskRunner",
srcs = ["sources/MPPVisionTaskRunner.mm"],
hdrs = ["sources/MPPVisionTaskRunner.h"],
copts = [
"-ObjC++",
"-std=c++17",
],
deps = [
":MPPRunningMode",
"//mediapipe/tasks/ios/core:MPPTaskRunner",
],
)

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@ -0,0 +1,54 @@
// 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 <Foundation/Foundation.h>
#import "mediapipe/tasks/ios/core/sources/MPPTaskRunner.h"
#import "mediapipe/tasks/ios/vision/core/sources/MPPRunningMode.h"
NS_ASSUME_NONNULL_BEGIN
/**
* This class is used to create and call appropriate methods on the C++ Task Runner to initialize,
* execute and terminate any MediaPipe vision task.
*/
@interface MPPVisionTaskRunner : MPPTaskRunner
/**
* Initializes a new `MPPVisionTaskRunner` with the MediaPipe calculator config protol running mode and packetsCallback.
*
* @param graphConfig A MediaPipe calculator config proto.
* @param runningMode MediaPipe vision task running mode.
* @param packetsCallback An optional C++ callback function that takes a list of output packets as
* the input argument. If provided, the callback must in turn call the block provided by the user in
* the appropriate task options.
* @param error Pointer to the memory location where errors if any should be
* saved. If @c NULL, no error will be saved.
*
* @return An instance of `MPPVisionTaskRunner` initialized to the given MediaPipe calculator config
* proto, running mode and packets callback.
*/
- (nullable instancetype)initWithCalculatorGraphConfig:(mediapipe::CalculatorGraphConfig)graphConfig
runningMode:(MPPRunningMode)runningMode
packetsCallback:
(mediapipe::tasks::core::PacketsCallback)packetsCallback
error:(NSError **)error;
- (instancetype)init NS_UNAVAILABLE;
+ (instancetype)new NS_UNAVAILABLE;
@end
NS_ASSUME_NONNULL_END

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@ -0,0 +1,72 @@
// 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/core/sources/MPPVisionTaskRunner.h"
#import "mediapipe/tasks/ios/common/sources/MPPCommon.h"
#import "mediapipe/tasks/ios/common/utils/sources/MPPCommonUtils.h"
namespace {
using ::mediapipe::CalculatorGraphConfig;
} // namespace
@interface MPPVisionTaskRunner () {
MPPRunningMode _runningMode;
}
@end
@implementation MPPVisionTaskRunner
- (nullable instancetype)initWithCalculatorGraphConfig:(mediapipe::CalculatorGraphConfig)graphConfig
runningMode:(MPPRunningMode)runningMode
packetsCallback:
(mediapipe::tasks::core::PacketsCallback)packetsCallback
error:(NSError **)error {
switch (runningMode) {
case MPPRunningModeImage:
case MPPRunningModeVideo: {
if (packetsCallback) {
[MPPCommonUtils
createCustomError:error
withCode:MPPTasksErrorCodeInvalidArgumentError
description:
@"The vision task is in image or video mode, a user-defined result callback should not be provided."];
return nil;
}
break;
}
case MPPRunningModeLiveStream: {
if (!packetsCallback) {
[MPPCommonUtils
createCustomError:error
withCode:MPPTasksErrorCodeInvalidArgumentError
description:
@"The vision task is in live stream mode, a user-defined result callback must be provided."];
return nil;
}
break;
}
default:
break
}
_runningMode = runningMode;
self = [super initWithCalculatorGraphConfig:graphConfig
packetsCallback:packetsCallback
error:error];
return self;
}
@end