Added vision task runner
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1623b591b7
commit
328fe4ed39
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@ -27,3 +27,16 @@ objc_library(
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module_name = "MPPRunningMode",
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module_name = "MPPRunningMode",
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)
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)
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objc_library(
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name = "MPPVisionTaskRunner",
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srcs = ["sources/MPPVisionTaskRunner.mm"],
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hdrs = ["sources/MPPVisionTaskRunner.h"],
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copts = [
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"-ObjC++",
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"-std=c++17",
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],
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deps = [
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":MPPRunningMode",
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"//mediapipe/tasks/ios/core:MPPTaskRunner",
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],
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)
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@ -0,0 +1,54 @@
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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 <Foundation/Foundation.h>
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#import "mediapipe/tasks/ios/core/sources/MPPTaskRunner.h"
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#import "mediapipe/tasks/ios/vision/core/sources/MPPRunningMode.h"
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NS_ASSUME_NONNULL_BEGIN
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/**
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* This class is used to create and call appropriate methods on the C++ Task Runner to initialize,
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* execute and terminate any MediaPipe vision task.
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*/
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@interface MPPVisionTaskRunner : MPPTaskRunner
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/**
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* Initializes a new `MPPVisionTaskRunner` with the MediaPipe calculator config protol running mode and packetsCallback.
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*
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* @param graphConfig A MediaPipe calculator config proto.
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* @param runningMode MediaPipe vision task running mode.
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* @param packetsCallback An optional C++ callback function that takes a list of output packets as
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* the input argument. If provided, the callback must in turn call the block provided by the user in
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* the appropriate task options.
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* @param error Pointer to the memory location where errors if any should be
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* saved. If @c NULL, no error will be saved.
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*
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* @return An instance of `MPPVisionTaskRunner` initialized to the given MediaPipe calculator config
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* proto, running mode and packets callback.
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*/
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- (nullable instancetype)initWithCalculatorGraphConfig:(mediapipe::CalculatorGraphConfig)graphConfig
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runningMode:(MPPRunningMode)runningMode
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packetsCallback:
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(mediapipe::tasks::core::PacketsCallback)packetsCallback
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error:(NSError **)error;
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- (instancetype)init NS_UNAVAILABLE;
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+ (instancetype)new NS_UNAVAILABLE;
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@end
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NS_ASSUME_NONNULL_END
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@ -0,0 +1,72 @@
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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/core/sources/MPPVisionTaskRunner.h"
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#import "mediapipe/tasks/ios/common/sources/MPPCommon.h"
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#import "mediapipe/tasks/ios/common/utils/sources/MPPCommonUtils.h"
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namespace {
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using ::mediapipe::CalculatorGraphConfig;
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} // namespace
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@interface MPPVisionTaskRunner () {
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MPPRunningMode _runningMode;
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}
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@end
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@implementation MPPVisionTaskRunner
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- (nullable instancetype)initWithCalculatorGraphConfig:(mediapipe::CalculatorGraphConfig)graphConfig
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runningMode:(MPPRunningMode)runningMode
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packetsCallback:
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(mediapipe::tasks::core::PacketsCallback)packetsCallback
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error:(NSError **)error {
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switch (runningMode) {
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case MPPRunningModeImage:
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case MPPRunningModeVideo: {
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if (packetsCallback) {
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[MPPCommonUtils
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createCustomError:error
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withCode:MPPTasksErrorCodeInvalidArgumentError
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description:
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@"The vision task is in image or video mode, a user-defined result callback should not be provided."];
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return nil;
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}
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break;
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}
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case MPPRunningModeLiveStream: {
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if (!packetsCallback) {
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[MPPCommonUtils
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createCustomError:error
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withCode:MPPTasksErrorCodeInvalidArgumentError
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description:
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@"The vision task is in live stream mode, a user-defined result callback must be provided."];
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return nil;
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}
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break;
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}
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default:
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break
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}
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_runningMode = runningMode;
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self = [super initWithCalculatorGraphConfig:graphConfig
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packetsCallback:packetsCallback
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error:error];
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return self;
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}
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@end
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