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@ -25,26 +25,26 @@ NS_ASSUME_NONNULL_BEGIN
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*
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*
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* An instance of the newly created C++ task runner will be stored until this class is destroyed.
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* An instance of the newly created C++ task runner will be stored until this class is destroyed.
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* When methods are called for processing (performing inference), closing etc., on this class,
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* When methods are called for processing (performing inference), closing etc., on this class,
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* internally the appropriate methods will be called on the C++ task runner instance to execute
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* internally the appropriate methods will be called on the C++ task runner instance to execute the
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* the appropriate actions. For each type of task, a subclass of this class must be defined to add
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* appropriate actions. For each type of task, a subclass of this class must be defined to add any
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* any additional functionality. For eg:, vision tasks must create an `MPPVisionTaskRunner` and
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* additional functionality. For eg:, vision tasks must create an `MPPVisionTaskRunner` and provide
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* provide additional functionality. An instance of `MPPVisionTaskRunner` can in turn be used by
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* additional functionality. An instance of `MPPVisionTaskRunner` can in turn be used by the each
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* the each vision task for creation and execution of the task. Please see the documentation for
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* vision task for creation and execution of the task. Please see the documentation for the C++ Task
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* the C++ Task Runner for more details on how the taks runner operates.
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* Runner for more details on how the taks runner operates.
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**/
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**/
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@interface MPPTaskRunner : NSObject
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@interface MPPTaskRunner : NSObject
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/**
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/**
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* Initializes a new `MPPTaskRunner` with the MediaPipe calculator configuration proto and an optional
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* Initializes a new `MPPTaskRunner` with the MediaPipe calculator configuration proto and an
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* C++ packets callback.
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* optional C++ packets callback.
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*
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*
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* You can pass `nullptr` for `packetsCallback` in case the mode of operation
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* You can pass `nullptr` for `packetsCallback` in case the mode of operation requested by the user
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* requested by the user is synchronous.
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* is synchronous.
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*
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*
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* If the task is operating in asynchronous mode, any iOS MediaPipe task that uses the `MPPTaskRunner`
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* If the task is operating in asynchronous mode, any iOS MediaPipe task that uses the
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* must define a C++ callback function to obtain the results of inference asynchronously and deliver
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* `MPPTaskRunner` must define a C++ callback function to obtain the results of inference
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* the results to the user. To accomplish this, callback function will in turn invoke the block
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* asynchronously and deliver the results to the user. To accomplish this, callback function will in
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* provided by the user in the task options supplied to create the task.
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* turn invoke the block provided by the user in the task options supplied to create the task.
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* Please see the documentation of the C++ Task Runner for more information on the synchronous and
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* Please see the documentation of the C++ Task Runner for more information on the synchronous and
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* asynchronous modes of operation.
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* asynchronous modes of operation.
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*
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*
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@ -61,22 +61,23 @@ NS_ASSUME_NONNULL_BEGIN
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(mediapipe::tasks::core::PacketsCallback)packetsCallback
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(mediapipe::tasks::core::PacketsCallback)packetsCallback
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error:(NSError **)error NS_DESIGNATED_INITIALIZER;
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error:(NSError **)error NS_DESIGNATED_INITIALIZER;
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/** A synchronous method for processing batch data or offline streaming data. This method is
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/**
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* designed for processing either batch data such as unrelated images and texts or offline streaming
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* A synchronous method for processing batch data or offline streaming data. This method is designed
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* data such as the decoded frames from a video file and an audio file. The call blocks the current
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* for processing either batch data such as unrelated images and texts or offline streaming data
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* such as the decoded frames from a video file and an audio file. The call blocks the current
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* thread until a failure status or a successful result is returned. If the input packets have no
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* thread until a failure status or a successful result is returned. If the input packets have no
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* timestamp, an internal timestamp will be assigend per invocation. Otherwise, when the timestamp is
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* timestamp, an internal timestamp will be assigend per invocation. Otherwise, when the timestamp
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* set in the input packets, the caller must ensure that the input packet timestamps are greater than
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* is set in the input packets, the caller must ensure that the input packet timestamps are greater
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* the timestamps of the previous invocation. This method is thread-unsafe and it is the caller's
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* than the timestamps of the previous invocation. This method is thread-unsafe and it is the
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* responsibility to synchronize access to this method across multiple threads and to ensure that the
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* caller's responsibility to synchronize access to this method across multiple threads and to
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* input packet timestamps are in order.
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* ensure that the input packet timestamps are in order.
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**/
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**/
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- (absl::StatusOr<mediapipe::tasks::core::PacketMap>)process:
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- (absl::StatusOr<mediapipe::tasks::core::PacketMap>)process:
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(const mediapipe::tasks::core::PacketMap &)packetMap;
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(const mediapipe::tasks::core::PacketMap &)packetMap;
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/**
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/**
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* Shuts down the C++ task runner. After the runner is closed, any calls that send input data to
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* Shuts down the C++ task runner. After the runner is closed, any calls that send input data to the
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* the runner are illegal and will receive errors.
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* runner are illegal and will receive errors.
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**/
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**/
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- (absl::Status)close;
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- (absl::Status)close;
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