chore(processor): rename RobotProcessor -> DataProcessorPipeline (#1850)

examples/phone_to_so100/evaluate.py

@@ -21,7 +21,7 @@ from lerobot.datasets.utils import merge_features
 from lerobot.model.kinematics import RobotKinematics
 from lerobot.policies.act.modeling_act import ACTPolicy
 from lerobot.policies.factory import make_pre_post_processors
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 from lerobot.processor.converters import (
     to_output_robot_action,
     to_transition_robot_observation,
@@ -65,7 +65,7 @@ kinematics_solver = RobotKinematics(
 )
 
 # Build pipeline to convert ee pose action to joint action
-robot_ee_to_joints_processor = RobotProcessor(
+robot_ee_to_joints_processor = DataProcessorPipeline(
     steps=[
         AddRobotObservationAsComplimentaryData(robot=robot),
         InverseKinematicsEEToJoints(
@@ -79,7 +79,7 @@ robot_ee_to_joints_processor = RobotProcessor(
 )
 
 # Build pipeline to convert joint observation to ee pose observation
-robot_joints_to_ee_pose_processor = RobotProcessor(
+robot_joints_to_ee_pose_processor = DataProcessorPipeline(
     steps=[
         ForwardKinematicsJointsToEE(kinematics=kinematics_solver, motor_names=list(robot.bus.motors.keys()))
     ],

examples/phone_to_so100/record.py

@@ -20,7 +20,7 @@ from lerobot.datasets.lerobot_dataset import LeRobotDataset
 from lerobot.datasets.pipeline_features import aggregate_pipeline_dataset_features
 from lerobot.datasets.utils import merge_features
 from lerobot.model.kinematics import RobotKinematics
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 from lerobot.processor.converters import (
     to_output_robot_action,
     to_transition_robot_observation,
@@ -73,7 +73,7 @@ kinematics_solver = RobotKinematics(
 )
 
 # Build pipeline to convert phone action to ee pose action
-phone_to_robot_ee_pose_processor = RobotProcessor(
+phone_to_robot_ee_pose_processor = DataProcessorPipeline(
     steps=[
         MapPhoneActionToRobotAction(platform=teleop_config.phone_os),
         AddRobotObservationAsComplimentaryData(robot=robot),
@@ -93,7 +93,7 @@ phone_to_robot_ee_pose_processor = RobotProcessor(
 )
 
 # Build pipeline to convert ee pose action to joint action
-robot_ee_to_joints_processor = RobotProcessor(
+robot_ee_to_joints_processor = DataProcessorPipeline(
     steps=[
         InverseKinematicsEEToJoints(
             kinematics=kinematics_solver,
@@ -110,7 +110,7 @@ robot_ee_to_joints_processor = RobotProcessor(
 )
 
 # Build pipeline to convert joint observation to ee pose observation
-robot_joints_to_ee_pose = RobotProcessor(
+robot_joints_to_ee_pose = DataProcessorPipeline(
     steps=[
         ForwardKinematicsJointsToEE(kinematics=kinematics_solver, motor_names=list(robot.bus.motors.keys()))
     ],

examples/phone_to_so100/replay.py

@@ -19,7 +19,7 @@ import time
 
 from lerobot.datasets.lerobot_dataset import LeRobotDataset
 from lerobot.model.kinematics import RobotKinematics
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 from lerobot.processor.converters import to_output_robot_action, to_transition_teleop_action
 from lerobot.robots.so100_follower.config_so100_follower import SO100FollowerConfig
 from lerobot.robots.so100_follower.robot_kinematic_processor import (
@@ -50,7 +50,7 @@ kinematics_solver = RobotKinematics(
 )
 
 # Build pipeline to convert ee pose action to joint action
-robot_ee_to_joints_processor = RobotProcessor(
+robot_ee_to_joints_processor = DataProcessorPipeline(
     steps=[
         AddRobotObservationAsComplimentaryData(robot=robot),
         InverseKinematicsEEToJoints(

examples/phone_to_so100/teleoperate.py

@@ -16,7 +16,7 @@
 import time
 
 from lerobot.model.kinematics import RobotKinematics
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 from lerobot.processor.converters import to_output_robot_action, to_transition_teleop_action
 from lerobot.robots.so100_follower.config_so100_follower import SO100FollowerConfig
 from lerobot.robots.so100_follower.robot_kinematic_processor import (
@@ -49,7 +49,7 @@ kinematics_solver = RobotKinematics(
 )
 
 # Build pipeline to convert phone action to ee pose action to joint action
-phone_to_robot_joints_processor = RobotProcessor(
+phone_to_robot_joints_processor = DataProcessorPipeline(
     steps=[
         MapPhoneActionToRobotAction(platform=teleop_config.phone_os),
         AddRobotObservationAsComplimentaryData(robot=robot),

src/lerobot/datasets/pipeline_features.py

@@ -17,11 +17,11 @@ from typing import Any
 
 from lerobot.constants import ACTION, OBS_IMAGES, OBS_STATE
 from lerobot.datasets.utils import hw_to_dataset_features
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 
 
 def aggregate_pipeline_dataset_features(
-    pipeline: RobotProcessor,
+    pipeline: DataProcessorPipeline,
     initial_features: dict[str, Any],
     *,
     use_videos: bool = True,

src/lerobot/policies/act/processor_act.py

@@ -18,11 +18,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.act.configuration_act import ACTConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -33,7 +33,7 @@ def make_act_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -57,12 +57,12 @@ def make_act_pre_post_processors(
     ]
 
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/diffusion/processor_diffusion.py

@@ -19,11 +19,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.diffusion.configuration_diffusion import DiffusionConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -34,7 +34,7 @@ def make_diffusion_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -57,12 +57,12 @@ def make_diffusion_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/factory.py

@@ -38,7 +38,7 @@ from lerobot.policies.sac.reward_model.configuration_classifier import RewardCla
 from lerobot.policies.smolvla.configuration_smolvla import SmolVLAConfig
 from lerobot.policies.tdmpc.configuration_tdmpc import TDMPCConfig
 from lerobot.policies.vqbet.configuration_vqbet import VQBeTConfig
-from lerobot.processor import ProcessorKwargs, RobotProcessor
+from lerobot.processor import DataProcessorPipeline, ProcessorKwargs
 
 
 def get_policy_class(name: str) -> type[PreTrainedPolicy]:
@@ -122,7 +122,7 @@ def make_pre_post_processors(
     policy_cfg: PreTrainedConfig,
     pretrained_path: str | None = None,
     **kwargs: Unpack[ProcessorConfigKwargs],
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     """Make a processor instance for a given policy type.
 
     This function creates the appropriate processor configuration based on the policy type.
@@ -146,14 +146,14 @@ def make_pre_post_processors(
         postprocessor_kwargs = kwargs.get("postprocessor_kwargs", {})
 
         return (
-            RobotProcessor.from_pretrained(
+            DataProcessorPipeline.from_pretrained(
                 pretrained_model_name_or_path=pretrained_path,
                 config_filename=kwargs.get("preprocessor_config_filename", "robot_preprocessor.json"),
                 overrides=kwargs.get("preprocessor_overrides", {}),
                 to_transition=preprocessor_kwargs.get("to_transition"),
                 to_output=preprocessor_kwargs.get("to_output"),
             ),
-            RobotProcessor.from_pretrained(
+            DataProcessorPipeline.from_pretrained(
                 pretrained_model_name_or_path=pretrained_path,
                 config_filename=kwargs.get("postprocessor_config_filename", "robot_postprocessor.json"),
                 overrides=kwargs.get("postprocessor_overrides", {}),

src/lerobot/policies/pi0/processor_pi0.py

@@ -22,13 +22,13 @@ from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_N
 from lerobot.policies.pi0.configuration_pi0 import PI0Config
 from lerobot.processor import (
     ComplementaryDataProcessor,
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     ProcessorStep,
     ProcessorStepRegistry,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TokenizerProcessor,
     UnnormalizerProcessor,
@@ -72,7 +72,7 @@ def make_pi0_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -105,12 +105,12 @@ def make_pi0_pre_post_processors(
     ]
 
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/pi0fast/processor_pi0fast.py

@@ -19,11 +19,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.pi0.configuration_pi0 import PI0Config
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -34,7 +34,7 @@ def make_pi0fast_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -57,12 +57,12 @@ def make_pi0fast_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/sac/processor_sac.py

@@ -20,11 +20,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.sac.configuration_sac import SACConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -35,7 +35,7 @@ def make_sac_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -58,12 +58,12 @@ def make_sac_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/sac/reward_model/processor_classifier.py

@@ -17,11 +17,11 @@ import torch
 
 from lerobot.policies.sac.reward_model.configuration_classifier import RewardClassifierConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     IdentityProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
-    RobotProcessor,
 )
 
 
@@ -30,7 +30,7 @@ def make_classifier_processor(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -48,12 +48,12 @@ def make_classifier_processor(
     output_steps = [DeviceProcessor(device="cpu"), IdentityProcessor()]
 
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name="classifier_preprocessor",
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name="classifier_postprocessor",
             **postprocessor_kwargs,

src/lerobot/policies/smolvla/processor_smolvla.py

@@ -21,12 +21,12 @@ from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_N
 from lerobot.policies.smolvla.configuration_smolvla import SmolVLAConfig
 from lerobot.processor import (
     ComplementaryDataProcessor,
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     ProcessorStepRegistry,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TokenizerProcessor,
     UnnormalizerProcessor,
@@ -38,7 +38,7 @@ def make_smolvla_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -68,12 +68,12 @@ def make_smolvla_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/tdmpc/processor_tdmpc.py

@@ -19,11 +19,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.tdmpc.configuration_tdmpc import TDMPCConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -34,7 +34,7 @@ def make_tdmpc_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -57,12 +57,12 @@ def make_tdmpc_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/policies/vqbet/processor_vqbet.py

@@ -20,11 +20,11 @@ import torch
 from lerobot.constants import POSTPROCESSOR_DEFAULT_NAME, PREPROCESSOR_DEFAULT_NAME
 from lerobot.policies.vqbet.configuration_vqbet import VQBeTConfig
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     ProcessorKwargs,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     UnnormalizerProcessor,
 )
@@ -35,7 +35,7 @@ def make_vqbet_pre_post_processors(
     dataset_stats: dict[str, dict[str, torch.Tensor]] | None = None,
     preprocessor_kwargs: ProcessorKwargs | None = None,
     postprocessor_kwargs: ProcessorKwargs | None = None,
-) -> tuple[RobotProcessor, RobotProcessor]:
+) -> tuple[DataProcessorPipeline, DataProcessorPipeline]:
     if preprocessor_kwargs is None:
         preprocessor_kwargs = {}
     if postprocessor_kwargs is None:
@@ -58,12 +58,12 @@ def make_vqbet_pre_post_processors(
         ),
     ]
     return (
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=input_steps,
             name=PREPROCESSOR_DEFAULT_NAME,
             **preprocessor_kwargs,
         ),
-        RobotProcessor(
+        DataProcessorPipeline(
             steps=output_steps,
             name=POSTPROCESSOR_DEFAULT_NAME,
             **postprocessor_kwargs,

src/lerobot/processor/__init__.py

@@ -41,6 +41,7 @@ from .observation_processor import VanillaObservationProcessor
 from .pipeline import (
     ActionProcessor,
     ComplementaryDataProcessor,
+    DataProcessorPipeline,
     DoneProcessor,
     IdentityProcessor,
     InfoProcessor,
@@ -49,7 +50,6 @@ from .pipeline import (
     ProcessorStep,
     ProcessorStepRegistry,
     RewardProcessor,
-    RobotProcessor,
     TruncatedProcessor,
 )
 from .rename_processor import RenameProcessor
@@ -85,7 +85,7 @@ __all__ = [
     "RenameProcessor",
     "RewardClassifierProcessor",
     "RewardProcessor",
-    "RobotProcessor",
+    "DataProcessorPipeline",
     "TimeLimitProcessor",
     "ToBatchProcessor",
     "TokenizerProcessor",

src/lerobot/processor/migrate_policy_normalization.py

@@ -50,7 +50,7 @@ from lerobot.configs.types import FeatureType, NormalizationMode, PolicyFeature
 from .batch_processor import ToBatchProcessor
 from .device_processor import DeviceProcessor
 from .normalize_processor import NormalizerProcessor, UnnormalizerProcessor
-from .pipeline import RobotProcessor
+from .pipeline import DataProcessorPipeline
 from .rename_processor import RenameProcessor
 
 # Policy type to class mapping
@@ -422,14 +422,14 @@ def main():
         ToBatchProcessor(),
         DeviceProcessor(device=policy_config.device),
     ]
-    preprocessor = RobotProcessor(steps=preprocessor_steps, name="robot_preprocessor")
+    preprocessor = DataProcessorPipeline(steps=preprocessor_steps, name="robot_preprocessor")
 
     # Create postprocessor with unnormalizer for outputs only
     postprocessor_steps = [
         DeviceProcessor(device="cpu"),
         UnnormalizerProcessor(features=output_features, norm_map=norm_map, stats=stats),
     ]
-    postprocessor = RobotProcessor(steps=postprocessor_steps, name="robot_postprocessor")
+    postprocessor = DataProcessorPipeline(steps=postprocessor_steps, name="robot_postprocessor")
 
     # Determine hub repo ID if pushing to hub
     if args.push_to_hub:

src/lerobot/processor/normalize_processor.py

@@ -12,7 +12,7 @@ from lerobot.datasets.lerobot_dataset import LeRobotDataset
 
 from .converters import to_tensor
 from .core import EnvTransition, TransitionKey
-from .pipeline import ProcessorStep, ProcessorStepRegistry, RobotProcessor
+from .pipeline import DataProcessorPipeline, ProcessorStep, ProcessorStepRegistry
 
 
 @dataclass
@@ -252,7 +252,9 @@ class UnnormalizerProcessor(_NormalizationMixin, ProcessorStep):
         return features
 
 
-def hotswap_stats(robot_processor: RobotProcessor, stats: dict[str, dict[str, Any]]) -> RobotProcessor:
+def hotswap_stats(
+    robot_processor: DataProcessorPipeline, stats: dict[str, dict[str, Any]]
+) -> DataProcessorPipeline:
     """
     Replaces normalization statistics in a RobotProcessor pipeline.
 

src/lerobot/processor/pipeline.py

@@ -117,7 +117,7 @@ class ProcessorStep(ABC):
     A step is any callable accepting a full `EnvTransition` dict and
     returning a (possibly modified) dict of the same structure. Implementers
     are encouraged—but not required—to expose the optional helper methods
-    listed below. When present, these hooks let `RobotProcessor`
+    listed below. When present, these hooks let `DataProcessorPipeline`
     automatically serialise the step's configuration and learnable state using
     a safe-to-share JSON + SafeTensors format.
 
@@ -175,14 +175,14 @@ class ProcessorStep(ABC):
 
 
 class ProcessorKwargs(TypedDict, total=False):
-    """Keyword arguments for RobotProcessor constructor."""
+    """Keyword arguments for DataProcessorPipeline constructor."""
 
     to_transition: Callable[[dict[str, Any]], EnvTransition] | None
     to_output: Callable[[EnvTransition], Any] | None
 
 
 @dataclass
-class RobotProcessor(ModelHubMixin, Generic[TOutput]):
+class DataProcessorPipeline(ModelHubMixin, Generic[TOutput]):
     """
     Composable, debuggable post-processing processor for robot transitions.
 
@@ -196,7 +196,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
     Args:
         steps: Ordered list of processing steps executed on every call. Defaults to empty list.
         name: Human-readable identifier that is persisted inside the JSON config.
-            Defaults to "RobotProcessor".
+            Defaults to "DataProcessorPipeline".
         to_transition: Function to convert batch dict to EnvTransition dict.
             Defaults to _default_batch_to_transition.
         to_output: Function to convert EnvTransition dict to the desired output format of type TOutput.
@@ -210,18 +210,20 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
     Type Safety Examples:
         ```python
         # Default behavior - returns batch dict
-        processor: RobotProcessor[dict[str, Any]] = RobotProcessor(steps=[some_step1, some_step2])
+        processor: DataProcessorPipeline[dict[str, Any]] = DataProcessorPipeline(
+            steps=[some_step1, some_step2]
+        )
         result: dict[str, Any] = processor(batch_data)  # Type checker knows this is a dict
 
         # For EnvTransition output, explicitly specify identity function
-        transition_processor: RobotProcessor[EnvTransition] = RobotProcessor(
+        transition_processor: DataProcessorPipeline[EnvTransition] = DataProcessorPipeline(
             steps=[some_step1, some_step2],
             to_output=lambda x: x,  # Identity function
         )
         result: EnvTransition = transition_processor(batch_data)  # Type checker knows this is EnvTransition
 
         # For custom output types
-        processor: RobotProcessor[str] = RobotProcessor(
+        processor: DataProcessorPipeline[str] = DataProcessorPipeline(
             steps=[custom_step], to_output=lambda t: f"Processed {len(t)} keys"
         )
         result: str = processor(batch_data)  # Type checker knows this is str
@@ -243,7 +245,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
     """
 
     steps: Sequence[ProcessorStep] = field(default_factory=list)
-    name: str = "RobotProcessor"
+    name: str = "DataProcessorPipeline"
 
     to_transition: Callable[[dict[str, Any]], EnvTransition] = field(default=batch_to_transition, repr=False)
     to_output: Callable[[EnvTransition], TOutput] = field(
@@ -419,7 +421,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
         to_transition: Callable[[dict[str, Any]], EnvTransition] | None = None,
         to_output: Callable[[EnvTransition], TOutput] | None = None,
         **kwargs,
-    ) -> RobotProcessor[TOutput]:
+    ) -> DataProcessorPipeline[TOutput]:
         """Load a serialized processor from source (local path or Hugging Face Hub identifier).
 
         Args:
@@ -440,7 +442,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
                 Use identity function (lambda x: x) for EnvTransition output.
 
         Returns:
-            A RobotProcessor[TOutput] instance loaded from the saved configuration.
+            A DataProcessorPipeline[TOutput] instance loaded from the saved configuration.
 
         Raises:
             ImportError: If a processor step class cannot be loaded or imported.
@@ -450,12 +452,12 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
         Examples:
             Basic loading:
             ```python
-            processor = RobotProcessor.from_pretrained("path/to/processor")
+            processor = DataProcessorPipeline.from_pretrained("path/to/processor")
             ```
 
             Loading specific config file:
             ```python
-            processor = RobotProcessor.from_pretrained(
+            processor = DataProcessorPipeline.from_pretrained(
                 "username/multi-processor-repo", config_filename="preprocessor.json"
             )
             ```
@@ -465,14 +467,14 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
             import gym
 
             env = gym.make("CartPole-v1")
-            processor = RobotProcessor.from_pretrained(
+            processor = DataProcessorPipeline.from_pretrained(
                 "username/cartpole-processor", overrides={"ActionRepeatStep": {"env": env}}
             )
             ```
 
             Multiple overrides:
             ```python
-            processor = RobotProcessor.from_pretrained(
+            processor = DataProcessorPipeline.from_pretrained(
                 "path/to/processor",
                 overrides={
                     "CustomStep": {"param1": "new_value"},
@@ -656,7 +658,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
 
         return cls(
             steps=steps,
-            name=loaded_config.get("name", "RobotProcessor"),
+            name=loaded_config.get("name", "DataProcessorPipeline"),
             to_transition=to_transition or batch_to_transition,
             # Cast is necessary here: Same type-checker limitation as above.
             # When to_output is None, we use the default which returns dict[str, Any].
@@ -668,13 +670,13 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
         """Return the number of steps in the processor."""
         return len(self.steps)
 
-    def __getitem__(self, idx: int | slice) -> ProcessorStep | RobotProcessor[TOutput]:
+    def __getitem__(self, idx: int | slice) -> ProcessorStep | DataProcessorPipeline[TOutput]:
         """Indexing helper exposing underlying steps.
         * ``int`` – returns the idx-th ProcessorStep.
-        * ``slice`` – returns a new RobotProcessor with the sliced steps.
+        * ``slice`` – returns a new DataProcessorPipeline with the sliced steps.
         """
         if isinstance(idx, slice):
-            return RobotProcessor(
+            return DataProcessorPipeline(
                 steps=self.steps[idx],
                 name=self.name,
                 to_transition=self.to_transition,
@@ -745,7 +747,7 @@ class RobotProcessor(ModelHubMixin, Generic[TOutput]):
 
         parts = [f"name='{self.name}'", steps_repr]
 
-        return f"RobotProcessor({', '.join(parts)})"
+        return f"DataProcessorPipeline({', '.join(parts)})"
 
     def __post_init__(self):
         for i, step in enumerate(self.steps):

src/lerobot/record.py

@@ -76,7 +76,7 @@ from lerobot.datasets.utils import hw_to_dataset_features
 from lerobot.datasets.video_utils import VideoEncodingManager
 from lerobot.policies.factory import make_policy, make_pre_post_processors
 from lerobot.policies.pretrained import PreTrainedPolicy
-from lerobot.processor import IdentityProcessor, RobotProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, IdentityProcessor, TransitionKey
 from lerobot.processor.converters import (
     to_output_robot_action,
     to_transition_robot_observation,
@@ -235,22 +235,22 @@ def record_loop(
     dataset: LeRobotDataset | None = None,
     teleop: Teleoperator | list[Teleoperator] | None = None,
     policy: PreTrainedPolicy | None = None,
-    preprocessor: RobotProcessor | None = None,
+    preprocessor: DataProcessorPipeline | None = None,
-    postprocessor: RobotProcessor | None = None,
+    postprocessor: DataProcessorPipeline | None = None,
     control_time_s: int | None = None,
-    teleop_action_processor: RobotProcessor | None = None,  # runs after teleop
+    teleop_action_processor: DataProcessorPipeline | None = None,  # runs after teleop
-    robot_action_processor: RobotProcessor | None = None,  # runs before robot
+    robot_action_processor: DataProcessorPipeline | None = None,  # runs before robot
-    robot_observation_processor: RobotProcessor | None = None,  # runs after robot
+    robot_observation_processor: DataProcessorPipeline | None = None,  # runs after robot
     single_task: str | None = None,
     display_data: bool = False,
 ):
-    teleop_action_processor = teleop_action_processor or RobotProcessor(
+    teleop_action_processor = teleop_action_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()], to_transition=to_transition_teleop_action, to_output=lambda tr: tr
     )
-    robot_action_processor = robot_action_processor or RobotProcessor(
+    robot_action_processor = robot_action_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()], to_transition=lambda tr: tr, to_output=to_output_robot_action
     )
-    robot_observation_processor = robot_observation_processor or RobotProcessor(
+    robot_observation_processor = robot_observation_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()], to_transition=to_transition_robot_observation, to_output=lambda tr: tr
     )
 

src/lerobot/replay.py

@@ -47,7 +47,7 @@ from pprint import pformat
 
 from lerobot.configs import parser
 from lerobot.datasets.lerobot_dataset import LeRobotDataset
-from lerobot.processor import IdentityProcessor, RobotProcessor
+from lerobot.processor import DataProcessorPipeline, IdentityProcessor
 from lerobot.processor.converters import to_output_robot_action, to_transition_teleop_action
 from lerobot.robots import (  # noqa: F401
     Robot,
@@ -85,7 +85,7 @@ class ReplayConfig:
     # Use vocal synthesis to read events.
     play_sounds: bool = True
     # Optional processor for actions before sending to robot
-    robot_action_processor: RobotProcessor | None = None
+    robot_action_processor: DataProcessorPipeline | None = None
 
 
 @parser.wrap()
@@ -94,7 +94,7 @@ def replay(cfg: ReplayConfig):
     logging.info(pformat(asdict(cfg)))
 
     # Initialize robot action processor with default if not provided
-    robot_action_processor = cfg.robot_action_processor or RobotProcessor(
+    robot_action_processor = cfg.robot_action_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()],
         to_transition=to_transition_teleop_action,
         to_output=to_output_robot_action,  # type: ignore[arg-type]

src/lerobot/scripts/rl/gym_manipulator.py

@@ -31,6 +31,7 @@ from lerobot.model.kinematics import RobotKinematics
 from lerobot.processor import (
     AddTeleopActionAsComplimentaryData,
     AddTeleopEventsAsInfo,
+    DataProcessorPipeline,
     DeviceProcessor,
     EnvTransition,
     GripperPenaltyProcessor,
@@ -42,7 +43,6 @@ from lerobot.processor import (
     MotorCurrentProcessor,
     Numpy2TorchActionProcessor,
     RewardClassifierProcessor,
-    RobotProcessor,
     TimeLimitProcessor,
     ToBatchProcessor,
     Torch2NumpyActionProcessor,
@@ -374,7 +374,9 @@ def make_processors(
             DeviceProcessor(device=device),
         ]
 
-        return RobotProcessor(steps=env_pipeline_steps), RobotProcessor(steps=action_pipeline_steps)
+        return DataProcessorPipeline(steps=env_pipeline_steps), DataProcessorPipeline(
+            steps=action_pipeline_steps
+        )
 
     # Full processor pipeline for real robot environment
     # Get robot and motor information for kinematics
@@ -486,15 +488,15 @@ def make_processors(
         ]
         action_pipeline_steps.extend(inverse_kinematics_steps)
 
-    return RobotProcessor(steps=env_pipeline_steps), RobotProcessor(steps=action_pipeline_steps)
+    return DataProcessorPipeline(steps=env_pipeline_steps), DataProcessorPipeline(steps=action_pipeline_steps)
 
 
 def step_env_and_process_transition(
     env: gym.Env,
     transition: EnvTransition,
     action: torch.Tensor,
-    env_processor: RobotProcessor,
+    env_processor: DataProcessorPipeline,
-    action_processor: RobotProcessor,
+    action_processor: DataProcessorPipeline,
 ):
     """
     Execute one step with processor pipeline.
@@ -543,8 +545,8 @@ def step_env_and_process_transition(
 
 def control_loop(
     env: gym.Env,
-    env_processor: RobotProcessor,
+    env_processor: DataProcessorPipeline,
-    action_processor: RobotProcessor,
+    action_processor: DataProcessorPipeline,
     teleop_device: Teleoperator,
     cfg: GymManipulatorConfig,
 ) -> None:
@@ -698,7 +700,9 @@ def control_loop(
         dataset.push_to_hub()
 
 
-def replay_trajectory(env: gym.Env, action_processor: RobotProcessor, cfg: GymManipulatorConfig) -> None:
+def replay_trajectory(
+    env: gym.Env, action_processor: DataProcessorPipeline, cfg: GymManipulatorConfig
+) -> None:
     """Replay recorded trajectory on robot environment."""
     assert cfg.dataset.replay_episode is not None, "Replay episode must be provided for replay"
 

src/lerobot/teleoperate.py

@@ -61,7 +61,7 @@ import rerun as rr
 from lerobot.cameras.opencv.configuration_opencv import OpenCVCameraConfig  # noqa: F401
 from lerobot.cameras.realsense.configuration_realsense import RealSenseCameraConfig  # noqa: F401
 from lerobot.configs import parser
-from lerobot.processor import IdentityProcessor, RobotProcessor
+from lerobot.processor import DataProcessorPipeline, IdentityProcessor
 from lerobot.processor.converters import (
     to_output_robot_action,
     to_transition_robot_observation,
@@ -104,9 +104,9 @@ class TeleoperateConfig:
     # Display all cameras on screen
     display_data: bool = False
     # Optional processors for data transformation
-    teleop_action_processor: RobotProcessor | None = None  # runs after teleop
+    teleop_action_processor: DataProcessorPipeline | None = None  # runs after teleop
-    robot_action_processor: RobotProcessor | None = None  # runs before robot
+    robot_action_processor: DataProcessorPipeline | None = None  # runs before robot
-    robot_observation_processor: RobotProcessor | None = None  # runs after robot
+    robot_observation_processor: DataProcessorPipeline | None = None  # runs after robot
 
 
 def teleop_loop(
@@ -115,20 +115,20 @@ def teleop_loop(
     fps: int,
     display_data: bool = False,
     duration: float | None = None,
-    teleop_action_processor: RobotProcessor | None = None,
+    teleop_action_processor: DataProcessorPipeline | None = None,
-    robot_action_processor: RobotProcessor | None = None,
+    robot_action_processor: DataProcessorPipeline | None = None,
-    robot_observation_processor: RobotProcessor | None = None,
+    robot_observation_processor: DataProcessorPipeline | None = None,
 ):
     # Initialize processors with defaults if not provided
-    teleop_action_processor = teleop_action_processor or RobotProcessor(
+    teleop_action_processor = teleop_action_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()], to_transition=to_transition_teleop_action, to_output=lambda tr: tr
     )
-    robot_action_processor = robot_action_processor or RobotProcessor(
+    robot_action_processor = robot_action_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()],
         to_transition=lambda tr: tr,
         to_output=to_output_robot_action,  # type: ignore[arg-type]
     )
-    robot_observation_processor = robot_observation_processor or RobotProcessor(
+    robot_observation_processor = robot_observation_processor or DataProcessorPipeline(
         steps=[IdentityProcessor()], to_transition=to_transition_robot_observation, to_output=lambda tr: tr
     )
 

src/lerobot/utils/control_utils.py

@@ -31,7 +31,7 @@ from termcolor import colored
 from lerobot.datasets.lerobot_dataset import LeRobotDataset
 from lerobot.datasets.utils import DEFAULT_FEATURES
 from lerobot.policies.pretrained import PreTrainedPolicy
-from lerobot.processor import RobotProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, TransitionKey
 from lerobot.robots import Robot
 
 
@@ -102,8 +102,8 @@ def predict_action(
     observation: dict[str, np.ndarray],
     policy: PreTrainedPolicy,
     device: torch.device,
-    preprocessor: RobotProcessor,
+    preprocessor: DataProcessorPipeline,
-    postprocessor: RobotProcessor,
+    postprocessor: DataProcessorPipeline,
     use_amp: bool,
     task: str | None = None,
     robot_type: str | None = None,

src/lerobot/utils/train_utils.py

@@ -32,7 +32,7 @@ from lerobot.datasets.utils import load_json, write_json
 from lerobot.optim.optimizers import load_optimizer_state, save_optimizer_state
 from lerobot.optim.schedulers import load_scheduler_state, save_scheduler_state
 from lerobot.policies.pretrained import PreTrainedPolicy
-from lerobot.processor import RobotProcessor
+from lerobot.processor import DataProcessorPipeline
 from lerobot.utils.random_utils import load_rng_state, save_rng_state
 
 
@@ -75,8 +75,8 @@ def save_checkpoint(
     policy: PreTrainedPolicy,
     optimizer: Optimizer,
     scheduler: LRScheduler | None = None,
-    preprocessor: RobotProcessor | None = None,
+    preprocessor: DataProcessorPipeline | None = None,
-    postprocessor: RobotProcessor | None = None,
+    postprocessor: DataProcessorPipeline | None = None,
 ) -> None:
     """This function creates the following directory structure:
 

tests/processor/test_act_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import ACTION, OBS_STATE
 from lerobot.policies.act.configuration_act import ACTConfig
 from lerobot.policies.act.processor_act import make_act_pre_post_processors
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TransitionKey,
     UnnormalizerProcessor,
@@ -250,7 +250,7 @@ def test_act_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )
 

tests/processor/test_batch_conversion.py

@@ -1,6 +1,6 @@
 import torch
 
-from lerobot.processor import RobotProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, TransitionKey
 from lerobot.processor.converters import batch_to_transition, transition_to_batch
 
 
@@ -20,7 +20,7 @@ def _dummy_batch():
 
 def test_observation_grouping_roundtrip():
     """Test that observation.* keys are properly grouped and ungrouped."""
-    proc = RobotProcessor([])
+    proc = DataProcessorPipeline([])
     batch_in = _dummy_batch()
     batch_out = proc(batch_in)
 
@@ -261,7 +261,7 @@ def test_custom_converter():
         batch = transition_to_batch(tr)
         return batch
 
-    processor = RobotProcessor(steps=[], to_transition=to_tr, to_output=to_batch)
+    processor = DataProcessorPipeline(steps=[], to_transition=to_tr, to_output=to_batch)
 
     batch = {
         "observation.state": torch.randn(1, 4),

tests/processor/test_batch_processor.py

@@ -22,7 +22,7 @@ import pytest
 import torch
 
 from lerobot.constants import OBS_ENV_STATE, OBS_IMAGE, OBS_IMAGES, OBS_STATE
-from lerobot.processor import ProcessorStepRegistry, RobotProcessor, ToBatchProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, ProcessorStepRegistry, ToBatchProcessor, TransitionKey
 
 
 def create_transition(
@@ -243,7 +243,7 @@ def test_mixed_observation():
 def test_integration_with_robot_processor():
     """Test ToBatchProcessor integration with RobotProcessor."""
     to_batch_processor = ToBatchProcessor()
-    pipeline = RobotProcessor([to_batch_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([to_batch_processor], to_transition=lambda x: x, to_output=lambda x: x)
 
     # Create unbatched observation
     observation = {
@@ -283,7 +283,7 @@ def test_serialization_methods():
 def test_save_and_load_pretrained():
     """Test saving and loading ToBatchProcessor with RobotProcessor."""
     processor = ToBatchProcessor()
-    pipeline = RobotProcessor(
+    pipeline = DataProcessorPipeline(
         [processor], name="BatchPipeline", to_transition=lambda x: x, to_output=lambda x: x
     )
 
@@ -296,7 +296,7 @@ def test_save_and_load_pretrained():
         assert config_path.exists()
 
         # Load pipeline
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -325,11 +325,11 @@ def test_registry_functionality():
 def test_registry_based_save_load():
     """Test saving and loading using registry name."""
     processor = ToBatchProcessor()
-    pipeline = RobotProcessor([processor], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([processor], to_transition=lambda x: x, to_output=lambda x: x)
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, to_transition=lambda x: x, to_output=lambda x: x
         )
 

tests/processor/test_classifier_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import OBS_IMAGE, OBS_STATE
 from lerobot.policies.sac.reward_model.configuration_classifier import RewardClassifierConfig
 from lerobot.policies.sac.reward_model.processor_classifier import make_classifier_processor
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     IdentityProcessor,
     NormalizerProcessor,
-    RobotProcessor,
     TransitionKey,
 )
 
@@ -254,7 +254,7 @@ def test_classifier_processor_save_and_load():
     factory_preprocessor, factory_postprocessor = make_classifier_processor(config, stats)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(
+    preprocessor = DataProcessorPipeline(
         factory_preprocessor.steps, to_transition=lambda x: x, to_output=lambda x: x
     )
 
@@ -263,7 +263,7 @@ def test_classifier_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -300,7 +300,7 @@ def test_classifier_processor_mixed_precision():
             modified_steps.append(step)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(modified_steps, to_transition=lambda x: x, to_output=lambda x: x)
+    preprocessor = DataProcessorPipeline(modified_steps, to_transition=lambda x: x, to_output=lambda x: x)
 
     # Create test data
     observation = {

tests/processor/test_device_processor.py

@@ -19,7 +19,7 @@ import pytest
 import torch
 
 from lerobot.configs.types import FeatureType, PolicyFeature
-from lerobot.processor import DeviceProcessor, RobotProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, DeviceProcessor, TransitionKey
 
 
 def create_transition(
@@ -310,7 +310,7 @@ def test_integration_with_robot_processor():
     device_processor = DeviceProcessor(device="cpu")
     batch_processor = ToBatchProcessor()
 
-    processor = RobotProcessor(
+    processor = DataProcessorPipeline(
         steps=[batch_processor, device_processor],
         name="test_pipeline",
         to_transition=lambda x: x,
@@ -336,14 +336,14 @@ def test_save_and_load_pretrained():
     """Test saving and loading processor with DeviceProcessor."""
     device = "cuda:0" if torch.cuda.is_available() else "cpu"
     processor = DeviceProcessor(device=device, float_dtype="float16")
-    robot_processor = RobotProcessor(steps=[processor], name="device_test_processor")
+    robot_processor = DataProcessorPipeline(steps=[processor], name="device_test_processor")
 
     with tempfile.TemporaryDirectory() as tmpdir:
         # Save
         robot_processor.save_pretrained(tmpdir)
 
         # Load
-        loaded_processor = RobotProcessor.from_pretrained(tmpdir)
+        loaded_processor = DataProcessorPipeline.from_pretrained(tmpdir)
 
         assert len(loaded_processor.steps) == 1
         loaded_device_processor = loaded_processor.steps[0]
@@ -982,7 +982,7 @@ def test_policy_processor_integration():
     norm_map = {FeatureType.STATE: NormalizationMode.MEAN_STD, FeatureType.ACTION: NormalizationMode.MEAN_STD}
 
     # Create input processor (preprocessor) that moves to GPU
-    input_processor = RobotProcessor(
+    input_processor = DataProcessorPipeline(
         steps=[
             NormalizerProcessor(features=features, norm_map=norm_map, stats=stats),
             ToBatchProcessor(),
@@ -994,7 +994,7 @@ def test_policy_processor_integration():
     )
 
     # Create output processor (postprocessor) that moves to CPU
-    output_processor = RobotProcessor(
+    output_processor = DataProcessorPipeline(
         steps=[
             DeviceProcessor(device="cpu"),
             UnnormalizerProcessor(features={ACTION: features[ACTION]}, norm_map=norm_map, stats=stats),

tests/processor/test_diffusion_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import ACTION, OBS_IMAGE, OBS_STATE
 from lerobot.policies.diffusion.configuration_diffusion import DiffusionConfig
 from lerobot.policies.diffusion.processor_diffusion import make_diffusion_pre_post_processors
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TransitionKey,
     UnnormalizerProcessor,
@@ -257,7 +257,7 @@ def test_diffusion_processor_save_and_load():
     factory_preprocessor, factory_postprocessor = make_diffusion_pre_post_processors(config, stats)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(
+    preprocessor = DataProcessorPipeline(
         factory_preprocessor.steps, to_transition=lambda x: x, to_output=lambda x: x
     )
 
@@ -266,7 +266,7 @@ def test_diffusion_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -303,7 +303,7 @@ def test_diffusion_processor_mixed_precision():
             modified_steps.append(step)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(modified_steps, to_transition=lambda x: x, to_output=lambda x: x)
+    preprocessor = DataProcessorPipeline(modified_steps, to_transition=lambda x: x, to_output=lambda x: x)
 
     # Create test data
     observation = {

tests/processor/test_normalize_processor.py

@@ -21,9 +21,9 @@ import torch
 
 from lerobot.configs.types import FeatureType, NormalizationMode, PolicyFeature
 from lerobot.processor import (
+    DataProcessorPipeline,
     IdentityProcessor,
     NormalizerProcessor,
-    RobotProcessor,
     TransitionKey,
     UnnormalizerProcessor,
     hotswap_stats,
@@ -508,7 +508,9 @@ def test_get_config(full_stats):
 
 def test_integration_with_robot_processor(normalizer_processor):
     """Test integration with RobotProcessor pipeline"""
-    robot_processor = RobotProcessor([normalizer_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    robot_processor = DataProcessorPipeline(
+        [normalizer_processor], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     observation = {
         "observation.image": torch.tensor([0.7, 0.5, 0.3]),
@@ -1009,7 +1011,7 @@ def test_hotswap_stats_basic_functionality():
     identity = IdentityProcessor()
 
     # Create robot processor
-    robot_processor = RobotProcessor(steps=[normalizer, unnormalizer, identity])
+    robot_processor = DataProcessorPipeline(steps=[normalizer, unnormalizer, identity])
 
     # Hotswap stats
     new_processor = hotswap_stats(robot_processor, new_stats)
@@ -1046,7 +1048,7 @@ def test_hotswap_stats_deep_copy():
     norm_map = {FeatureType.VISUAL: NormalizationMode.MEAN_STD}
 
     normalizer = NormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
-    original_processor = RobotProcessor(steps=[normalizer])
+    original_processor = DataProcessorPipeline(steps=[normalizer])
 
     # Store reference to original stats
     original_stats_reference = original_processor.steps[0].stats
@@ -1089,7 +1091,7 @@ def test_hotswap_stats_only_affects_normalizer_steps():
     unnormalizer = UnnormalizerProcessor(features=features, norm_map=norm_map, stats=stats)
     identity = IdentityProcessor()
 
-    robot_processor = RobotProcessor(steps=[normalizer, identity, unnormalizer])
+    robot_processor = DataProcessorPipeline(steps=[normalizer, identity, unnormalizer])
 
     # Hotswap stats
     new_processor = hotswap_stats(robot_processor, new_stats)
@@ -1116,7 +1118,7 @@ def test_hotswap_stats_empty_stats():
     norm_map = {FeatureType.VISUAL: NormalizationMode.MEAN_STD}
 
     normalizer = NormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
-    robot_processor = RobotProcessor(steps=[normalizer])
+    robot_processor = DataProcessorPipeline(steps=[normalizer])
 
     # Hotswap with empty stats
     new_processor = hotswap_stats(robot_processor, empty_stats)
@@ -1133,7 +1135,7 @@ def test_hotswap_stats_no_normalizer_steps():
     }
 
     # Create processor with only identity steps
-    robot_processor = RobotProcessor(steps=[IdentityProcessor(), IdentityProcessor()])
+    robot_processor = DataProcessorPipeline(steps=[IdentityProcessor(), IdentityProcessor()])
 
     # Hotswap stats - should work without error
     new_processor = hotswap_stats(robot_processor, stats)
@@ -1172,7 +1174,7 @@ def test_hotswap_stats_preserves_other_attributes():
         normalize_observation_keys=normalize_observation_keys,
         eps=eps,
     )
-    robot_processor = RobotProcessor(steps=[normalizer])
+    robot_processor = DataProcessorPipeline(steps=[normalizer])
 
     # Hotswap stats
     new_processor = hotswap_stats(robot_processor, new_stats)
@@ -1215,7 +1217,7 @@ def test_hotswap_stats_multiple_normalizer_types():
     unnormalizer1 = UnnormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
     unnormalizer2 = UnnormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
 
-    robot_processor = RobotProcessor(steps=[normalizer1, unnormalizer1, normalizer2, unnormalizer2])
+    robot_processor = DataProcessorPipeline(steps=[normalizer1, unnormalizer1, normalizer2, unnormalizer2])
 
     # Hotswap stats
     new_processor = hotswap_stats(robot_processor, new_stats)
@@ -1263,7 +1265,7 @@ def test_hotswap_stats_with_different_data_types():
     }
 
     normalizer = NormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
-    robot_processor = RobotProcessor(steps=[normalizer])
+    robot_processor = DataProcessorPipeline(steps=[normalizer])
 
     # Hotswap stats
     new_processor = hotswap_stats(robot_processor, new_stats)
@@ -1319,7 +1321,9 @@ def test_hotswap_stats_functional_test():
 
     # Create original processor
     normalizer = NormalizerProcessor(features=features, norm_map=norm_map, stats=initial_stats)
-    original_processor = RobotProcessor(steps=[normalizer], to_transition=lambda x: x, to_output=lambda x: x)
+    original_processor = DataProcessorPipeline(
+        steps=[normalizer], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     # Process with original stats
     original_result = original_processor(transition)

tests/processor/test_pipeline.py

@@ -27,7 +27,7 @@ import torch.nn as nn
 
 from lerobot.configs.types import FeatureType, PolicyFeature
 from lerobot.datasets.pipeline_features import aggregate_pipeline_dataset_features
-from lerobot.processor import EnvTransition, ProcessorStepRegistry, RobotProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, EnvTransition, ProcessorStepRegistry, TransitionKey
 from tests.conftest import assert_contract_is_typed
 
 
@@ -175,7 +175,7 @@ class MockStepWithTensorState:
 
 def test_empty_pipeline():
     """Test pipeline with no steps."""
-    pipeline = RobotProcessor([], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([], to_transition=lambda x: x, to_output=lambda x: x)
 
     transition = create_transition()
     result = pipeline(transition)
@@ -187,7 +187,7 @@ def test_empty_pipeline():
 def test_single_step_pipeline():
     """Test pipeline with a single step."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([step], to_transition=lambda x: x, to_output=lambda x: x)
 
     transition = create_transition()
     result = pipeline(transition)
@@ -204,7 +204,7 @@ def test_multiple_steps_pipeline():
     """Test pipeline with multiple steps."""
     step1 = MockStep("step1")
     step2 = MockStep("step2")
-    pipeline = RobotProcessor([step1, step2], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([step1, step2], to_transition=lambda x: x, to_output=lambda x: x)
 
     transition = create_transition()
     result = pipeline(transition)
@@ -216,7 +216,7 @@ def test_multiple_steps_pipeline():
 
 def test_invalid_transition_format():
     """Test pipeline with invalid transition format."""
-    pipeline = RobotProcessor([MockStep()])
+    pipeline = DataProcessorPipeline([MockStep()])
 
     # Test with wrong type (tuple instead of dict)
     with pytest.raises(ValueError, match="EnvTransition must be a dictionary"):
@@ -231,7 +231,7 @@ def test_step_through():
     """Test step_through method with dict input."""
     step1 = MockStep("step1")
     step2 = MockStep("step2")
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     transition = create_transition()
 
@@ -252,7 +252,7 @@ def test_step_through_with_dict():
     """Test step_through method with dict input."""
     step1 = MockStep("step1")
     step2 = MockStep("step2")
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     batch = {
         "observation.image": None,
@@ -291,7 +291,7 @@ def test_step_through_with_dict():
 def test_step_through_no_hooks():
     """Test that step_through doesn't execute hooks."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     hook_calls = []
 
@@ -326,7 +326,7 @@ def test_indexing():
     """Test pipeline indexing."""
     step1 = MockStep("step1")
     step2 = MockStep("step2")
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     # Test integer indexing
     assert pipeline[0] is step1
@@ -334,7 +334,7 @@ def test_indexing():
 
     # Test slice indexing
     sub_pipeline = pipeline[0:1]
-    assert isinstance(sub_pipeline, RobotProcessor)
+    assert isinstance(sub_pipeline, DataProcessorPipeline)
     assert len(sub_pipeline) == 1
     assert sub_pipeline[0] is step1
 
@@ -342,7 +342,7 @@ def test_indexing():
 def test_hooks():
     """Test before/after step hooks."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     before_calls = []
     after_calls = []
@@ -366,7 +366,7 @@ def test_hooks():
 def test_unregister_hooks():
     """Test unregistering hooks from the pipeline."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     # Test before_step_hook
     before_calls = []
@@ -405,7 +405,7 @@ def test_unregister_hooks():
 
 def test_unregister_nonexistent_hook():
     """Test error handling when unregistering hooks that don't exist."""
-    pipeline = RobotProcessor([MockStep()])
+    pipeline = DataProcessorPipeline([MockStep()])
 
     def some_hook(idx: int, transition: EnvTransition):
         pass
@@ -423,7 +423,7 @@ def test_unregister_nonexistent_hook():
 
 def test_multiple_hooks_and_selective_unregister():
     """Test registering multiple hooks and selectively unregistering them."""
-    pipeline = RobotProcessor([MockStep("step1"), MockStep("step2")])
+    pipeline = DataProcessorPipeline([MockStep("step1"), MockStep("step2")])
 
     calls_1 = []
     calls_2 = []
@@ -469,7 +469,7 @@ def test_multiple_hooks_and_selective_unregister():
 
 def test_hook_execution_order_documentation():
     """Test and document that hooks are executed sequentially in registration order."""
-    pipeline = RobotProcessor([MockStep("step")])
+    pipeline = DataProcessorPipeline([MockStep("step")])
 
     execution_order = []
 
@@ -521,7 +521,7 @@ def test_save_and_load_pretrained():
     step1.counter = 5
     step2.counter = 10
 
-    pipeline = RobotProcessor([step1, step2], name="TestPipeline")
+    pipeline = DataProcessorPipeline([step1, step2], name="TestPipeline")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save pipeline
@@ -543,7 +543,7 @@ def test_save_and_load_pretrained():
         assert config["steps"][1]["config"]["counter"] == 10
 
         # Load pipeline
-        loaded_pipeline = RobotProcessor.from_pretrained(tmp_dir)
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(tmp_dir)
 
         assert loaded_pipeline.name == "TestPipeline"
         assert len(loaded_pipeline) == 2
@@ -556,7 +556,7 @@ def test_save_and_load_pretrained():
 def test_step_without_optional_methods():
     """Test pipeline with steps that don't implement optional methods."""
     step = MockStepWithoutOptionalMethods(multiplier=3.0)
-    pipeline = RobotProcessor(
+    pipeline = DataProcessorPipeline(
         [step], to_transition=lambda x: x, to_output=lambda x: x
     )  # Identity for EnvTransition input/output
 
@@ -571,14 +571,14 @@ def test_step_without_optional_methods():
     # Save/load should work even without optional methods
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
-        loaded_pipeline = RobotProcessor.from_pretrained(tmp_dir)
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(tmp_dir)
         assert len(loaded_pipeline) == 1
 
 
 def test_mixed_json_and_tensor_state():
     """Test step with both JSON attributes and tensor state."""
     step = MockStepWithTensorState(name="stats", learning_rate=0.05, window_size=5)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     # Process some transitions with rewards
     for i in range(10):
@@ -594,13 +594,13 @@ def test_mixed_json_and_tensor_state():
         pipeline.save_pretrained(tmp_dir)
 
         # Check that both config and state files were created
-        config_path = Path(tmp_dir) / "robotprocessor.json"  # Default name is "RobotProcessor"
+        config_path = Path(tmp_dir) / "dataprocessorpipeline.json"  # Default name is "RobotProcessor"
-        state_path = Path(tmp_dir) / "robotprocessor_step_0.safetensors"
+        state_path = Path(tmp_dir) / "dataprocessorpipeline_step_0.safetensors"
         assert config_path.exists()
         assert state_path.exists()
 
         # Load and verify
-        loaded_pipeline = RobotProcessor.from_pretrained(tmp_dir)
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(tmp_dir)
         loaded_step = loaded_pipeline.steps[0]
 
         # Check JSON attributes were restored
@@ -861,7 +861,7 @@ def test_from_pretrained_with_overrides():
     env_step = MockStepWithNonSerializableParam(name="env_step", multiplier=2.0)
     registered_step = RegisteredMockStep(value=100, device="cpu")
 
-    pipeline = RobotProcessor([env_step, registered_step], name="TestOverrides")
+    pipeline = DataProcessorPipeline([env_step, registered_step], name="TestOverrides")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save the pipeline
@@ -879,7 +879,7 @@ def test_from_pretrained_with_overrides():
             "registered_mock_step": {"device": "cuda", "value": 200},
         }
 
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides=overrides, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -907,7 +907,7 @@ def test_from_pretrained_with_partial_overrides():
     step1 = MockStepWithNonSerializableParam(name="step1", multiplier=1.0)
     step2 = MockStepWithNonSerializableParam(name="step2", multiplier=2.0)
 
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -917,7 +917,7 @@ def test_from_pretrained_with_partial_overrides():
 
         # The current implementation applies overrides to ALL steps with the same class name
         # Both steps will get the override
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides=overrides, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -933,7 +933,7 @@ def test_from_pretrained_with_partial_overrides():
 def test_from_pretrained_invalid_override_key():
     """Test that invalid override keys raise KeyError."""
     step = MockStepWithNonSerializableParam()
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -942,13 +942,13 @@ def test_from_pretrained_invalid_override_key():
         overrides = {"NonExistentStep": {"param": "value"}}
 
         with pytest.raises(KeyError, match="Override keys.*do not match any step"):
-            RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+            DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
 
 
 def test_from_pretrained_multiple_invalid_override_keys():
     """Test that multiple invalid override keys are reported."""
     step = MockStepWithNonSerializableParam()
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -957,7 +957,7 @@ def test_from_pretrained_multiple_invalid_override_keys():
         overrides = {"NonExistentStep1": {"param": "value1"}, "NonExistentStep2": {"param": "value2"}}
 
         with pytest.raises(KeyError) as exc_info:
-            RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+            DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
 
         error_msg = str(exc_info.value)
         assert "NonExistentStep1" in error_msg
@@ -968,7 +968,7 @@ def test_from_pretrained_multiple_invalid_override_keys():
 def test_from_pretrained_registered_step_override():
     """Test overriding registered steps using registry names."""
     registered_step = RegisteredMockStep(value=50, device="cpu")
-    pipeline = RobotProcessor([registered_step])
+    pipeline = DataProcessorPipeline([registered_step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -976,7 +976,7 @@ def test_from_pretrained_registered_step_override():
         # Override using registry name
         overrides = {"registered_mock_step": {"value": 999, "device": "cuda"}}
 
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides=overrides, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -994,7 +994,7 @@ def test_from_pretrained_mixed_registered_and_unregistered():
     unregistered_step = MockStepWithNonSerializableParam(name="unregistered", multiplier=1.0)
     registered_step = RegisteredMockStep(value=10, device="cpu")
 
-    pipeline = RobotProcessor([unregistered_step, registered_step])
+    pipeline = DataProcessorPipeline([unregistered_step, registered_step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -1006,7 +1006,7 @@ def test_from_pretrained_mixed_registered_and_unregistered():
             "registered_mock_step": {"value": 777},
         }
 
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides=overrides, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -1023,13 +1023,13 @@ def test_from_pretrained_mixed_registered_and_unregistered():
 def test_from_pretrained_no_overrides():
     """Test that from_pretrained works without overrides (backward compatibility)."""
     step = MockStepWithNonSerializableParam(name="no_override", multiplier=3.0)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Load without overrides
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -1045,13 +1045,13 @@ def test_from_pretrained_no_overrides():
 def test_from_pretrained_empty_overrides():
     """Test that from_pretrained works with empty overrides dict."""
     step = MockStepWithNonSerializableParam(multiplier=2.0)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Load with empty overrides
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides={}, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -1067,7 +1067,7 @@ def test_from_pretrained_empty_overrides():
 def test_from_pretrained_override_instantiation_error():
     """Test that instantiation errors with overrides are properly reported."""
     step = MockStepWithNonSerializableParam(multiplier=1.0)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -1080,13 +1080,13 @@ def test_from_pretrained_override_instantiation_error():
         }
 
         with pytest.raises(ValueError, match="Failed to instantiate processor step"):
-            RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+            DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
 
 
 def test_from_pretrained_with_state_and_overrides():
     """Test that overrides work correctly with steps that have tensor state."""
     step = MockStepWithTensorState(name="tensor_step", learning_rate=0.01, window_size=5)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     # Process some data to create state
     for i in range(10):
@@ -1104,7 +1104,7 @@ def test_from_pretrained_with_state_and_overrides():
             }
         }
 
-        loaded_pipeline = RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
         loaded_step = loaded_pipeline.steps[0]
 
         # Check that config overrides were applied
@@ -1123,7 +1123,7 @@ def test_from_pretrained_override_error_messages():
     """Test that error messages for override failures are helpful."""
     step1 = MockStepWithNonSerializableParam(name="step1")
     step2 = RegisteredMockStep()
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -1132,7 +1132,7 @@ def test_from_pretrained_override_error_messages():
         overrides = {"WrongStepName": {"param": "value"}}
 
         with pytest.raises(KeyError) as exc_info:
-            RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+            DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
 
         error_msg = str(exc_info.value)
         assert "WrongStepName" in error_msg
@@ -1143,20 +1143,20 @@ def test_from_pretrained_override_error_messages():
 
 def test_repr_empty_processor():
     """Test __repr__ with empty processor."""
-    pipeline = RobotProcessor()
+    pipeline = DataProcessorPipeline()
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=0: [])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=0: [])"
     assert repr_str == expected
 
 
 def test_repr_single_step():
     """Test __repr__ with single step."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=1: [MockStep])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=1: [MockStep])"
     assert repr_str == expected
 
 
@@ -1164,18 +1164,18 @@ def test_repr_multiple_steps_under_limit():
     """Test __repr__ with 2-3 steps (all shown)."""
     step1 = MockStep("step1")
     step2 = MockStepWithoutOptionalMethods()
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=2: [MockStep, MockStepWithoutOptionalMethods])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=2: [MockStep, MockStepWithoutOptionalMethods])"
     assert repr_str == expected
 
     # Test with 3 steps (boundary case)
     step3 = MockStepWithTensorState()
-    pipeline = RobotProcessor([step1, step2, step3])
+    pipeline = DataProcessorPipeline([step1, step2, step3])
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=3: [MockStep, MockStepWithoutOptionalMethods, MockStepWithTensorState])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=3: [MockStep, MockStepWithoutOptionalMethods, MockStepWithTensorState])"
     assert repr_str == expected
 
 
@@ -1187,30 +1187,30 @@ def test_repr_many_steps_truncated():
     step4 = MockModuleStep()
     step5 = MockNonModuleStepWithState()
 
-    pipeline = RobotProcessor([step1, step2, step3, step4, step5])
+    pipeline = DataProcessorPipeline([step1, step2, step3, step4, step5])
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=5: [MockStep, MockStepWithoutOptionalMethods, ..., MockNonModuleStepWithState])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=5: [MockStep, MockStepWithoutOptionalMethods, ..., MockNonModuleStepWithState])"
     assert repr_str == expected
 
 
 def test_repr_with_custom_name():
     """Test __repr__ with custom processor name."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step], name="CustomProcessor")
+    pipeline = DataProcessorPipeline([step], name="CustomProcessor")
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='CustomProcessor', steps=1: [MockStep])"
+    expected = "DataProcessorPipeline(name='CustomProcessor', steps=1: [MockStep])"
     assert repr_str == expected
 
 
 def test_repr_with_seed():
     """Test __repr__ with seed parameter."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='RobotProcessor', steps=1: [MockStep])"
+    expected = "DataProcessorPipeline(name='DataProcessorPipeline', steps=1: [MockStep])"
     assert repr_str == expected
 
 
@@ -1218,20 +1218,22 @@ def test_repr_with_custom_name_and_seed():
     """Test __repr__ with both custom name and seed."""
     step1 = MockStep("step1")
     step2 = MockStepWithoutOptionalMethods()
-    pipeline = RobotProcessor([step1, step2], name="MyProcessor")
+    pipeline = DataProcessorPipeline([step1, step2], name="MyProcessor")
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='MyProcessor', steps=2: [MockStep, MockStepWithoutOptionalMethods])"
+    expected = (
+        "DataProcessorPipeline(name='MyProcessor', steps=2: [MockStep, MockStepWithoutOptionalMethods])"
+    )
     assert repr_str == expected
 
 
 def test_repr_without_seed():
     """Test __repr__ when seed is explicitly None (should not show seed)."""
     step = MockStep("test_step")
-    pipeline = RobotProcessor([step], name="TestProcessor")
+    pipeline = DataProcessorPipeline([step], name="TestProcessor")
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='TestProcessor', steps=1: [MockStep])"
+    expected = "DataProcessorPipeline(name='TestProcessor', steps=1: [MockStep])"
     assert repr_str == expected
 
 
@@ -1242,10 +1244,10 @@ def test_repr_various_step_types():
     step3 = MockModuleStep()
     step4 = MockNonModuleStepWithState()
 
-    pipeline = RobotProcessor([step1, step2, step3, step4], name="MixedSteps")
+    pipeline = DataProcessorPipeline([step1, step2, step3, step4], name="MixedSteps")
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='MixedSteps', steps=4: [MockStep, MockStepWithTensorState, ..., MockNonModuleStepWithState])"
+    expected = "DataProcessorPipeline(name='MixedSteps', steps=4: [MockStep, MockStepWithTensorState, ..., MockNonModuleStepWithState])"
     assert repr_str == expected
 
 
@@ -1256,10 +1258,10 @@ def test_repr_edge_case_long_names():
     step3 = MockStepWithTensorState()
     step4 = MockNonModuleStepWithState()
 
-    pipeline = RobotProcessor([step1, step2, step3, step4], name="LongNames")
+    pipeline = DataProcessorPipeline([step1, step2, step3, step4], name="LongNames")
     repr_str = repr(pipeline)
 
-    expected = "RobotProcessor(name='LongNames', steps=4: [MockStepWithNonSerializableParam, MockStepWithoutOptionalMethods, ..., MockNonModuleStepWithState])"
+    expected = "DataProcessorPipeline(name='LongNames', steps=4: [MockStepWithNonSerializableParam, MockStepWithoutOptionalMethods, ..., MockNonModuleStepWithState])"
     assert repr_str == expected
 
 
@@ -1267,7 +1269,7 @@ def test_repr_edge_case_long_names():
 def test_save_with_custom_config_filename():
     """Test saving processor with custom config filename."""
     step = MockStep("test")
-    pipeline = RobotProcessor([step], name="TestProcessor")
+    pipeline = DataProcessorPipeline([step], name="TestProcessor")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save with custom filename
@@ -1283,16 +1285,18 @@ def test_save_with_custom_config_filename():
         assert config["name"] == "TestProcessor"
 
         # Load with specific filename
-        loaded = RobotProcessor.from_pretrained(tmp_dir, config_filename="my_custom_config.json")
+        loaded = DataProcessorPipeline.from_pretrained(tmp_dir, config_filename="my_custom_config.json")
         assert loaded.name == "TestProcessor"
 
 
 def test_multiple_processors_same_directory():
     """Test saving multiple processors to the same directory with different config files."""
     # Create different processors
-    preprocessor = RobotProcessor([MockStep("pre1"), MockStep("pre2")], name="preprocessor")
+    preprocessor = DataProcessorPipeline([MockStep("pre1"), MockStep("pre2")], name="preprocessor")
 
-    postprocessor = RobotProcessor([MockStepWithoutOptionalMethods(multiplier=0.5)], name="postprocessor")
+    postprocessor = DataProcessorPipeline(
+        [MockStepWithoutOptionalMethods(multiplier=0.5)], name="postprocessor"
+    )
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save both to same directory
@@ -1304,8 +1308,8 @@ def test_multiple_processors_same_directory():
         assert (Path(tmp_dir) / "postprocessor.json").exists()
 
         # Load them back
-        loaded_pre = RobotProcessor.from_pretrained(tmp_dir, config_filename="preprocessor.json")
+        loaded_pre = DataProcessorPipeline.from_pretrained(tmp_dir, config_filename="preprocessor.json")
-        loaded_post = RobotProcessor.from_pretrained(tmp_dir, config_filename="postprocessor.json")
+        loaded_post = DataProcessorPipeline.from_pretrained(tmp_dir, config_filename="postprocessor.json")
 
         assert loaded_pre.name == "preprocessor"
         assert loaded_post.name == "postprocessor"
@@ -1316,20 +1320,20 @@ def test_multiple_processors_same_directory():
 def test_auto_detect_single_config():
     """Test automatic config detection when there's only one JSON file."""
     step = MockStepWithTensorState()
-    pipeline = RobotProcessor([step], name="SingleConfig")
+    pipeline = DataProcessorPipeline([step], name="SingleConfig")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Load without specifying config_filename
-        loaded = RobotProcessor.from_pretrained(tmp_dir)
+        loaded = DataProcessorPipeline.from_pretrained(tmp_dir)
         assert loaded.name == "SingleConfig"
 
 
 def test_error_multiple_configs_no_filename():
     """Test error when multiple configs exist and no filename specified."""
-    proc1 = RobotProcessor([MockStep()], name="processor1")
+    proc1 = DataProcessorPipeline([MockStep()], name="processor1")
-    proc2 = RobotProcessor([MockStep()], name="processor2")
+    proc2 = DataProcessorPipeline([MockStep()], name="processor2")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         proc1.save_pretrained(tmp_dir)
@@ -1337,7 +1341,7 @@ def test_error_multiple_configs_no_filename():
 
         # Should raise error
         with pytest.raises(ValueError, match="Multiple .json files found"):
-            RobotProcessor.from_pretrained(tmp_dir)
+            DataProcessorPipeline.from_pretrained(tmp_dir)
 
 
 def test_state_file_naming_with_indices():
@@ -1347,7 +1351,7 @@ def test_state_file_naming_with_indices():
     step2 = MockStepWithTensorState(name="norm2", window_size=10)
     step3 = MockModuleStep(input_dim=5)
 
-    pipeline = RobotProcessor([step1, step2, step3])
+    pipeline = DataProcessorPipeline([step1, step2, step3])
 
     # Process some data to create state
     for i in range(5):
@@ -1363,9 +1367,9 @@ def test_state_file_naming_with_indices():
 
         # Files should be named with pipeline name prefix and indices
         expected_names = [
-            "robotprocessor_step_0.safetensors",
+            "dataprocessorpipeline_step_0.safetensors",
-            "robotprocessor_step_1.safetensors",
+            "dataprocessorpipeline_step_1.safetensors",
-            "robotprocessor_step_2.safetensors",
+            "dataprocessorpipeline_step_2.safetensors",
         ]
         actual_names = [f.name for f in state_files]
         assert actual_names == expected_names
@@ -1404,7 +1408,7 @@ def test_state_file_naming_with_registry():
         # Create pipeline with registered steps
         step1 = TestStatefulStep(1)
         step2 = TestStatefulStep(2)
-        pipeline = RobotProcessor([step1, step2])
+        pipeline = DataProcessorPipeline([step1, step2])
 
         with tempfile.TemporaryDirectory() as tmp_dir:
             pipeline.save_pretrained(tmp_dir)
@@ -1415,8 +1419,8 @@ def test_state_file_naming_with_registry():
 
             # Should include pipeline name, index and registry name
             expected_names = [
-                "robotprocessor_step_0_test_stateful_step.safetensors",
+                "dataprocessorpipeline_step_0_test_stateful_step.safetensors",
-                "robotprocessor_step_1_test_stateful_step.safetensors",
+                "dataprocessorpipeline_step_1_test_stateful_step.safetensors",
             ]
             actual_names = [f.name for f in state_files]
             assert actual_names == expected_names
@@ -1459,13 +1463,13 @@ def test_override_with_nested_config():
 
     try:
         step = ComplexConfigStep()
-        pipeline = RobotProcessor([step])
+        pipeline = DataProcessorPipeline([step])
 
         with tempfile.TemporaryDirectory() as tmp_dir:
             pipeline.save_pretrained(tmp_dir)
 
             # Load with nested override
-            loaded = RobotProcessor.from_pretrained(
+            loaded = DataProcessorPipeline.from_pretrained(
                 tmp_dir,
                 overrides={"complex_config_step": {"nested_config": {"level1": {"level2": "overridden"}}}},
                 to_transition=lambda x: x,
@@ -1483,13 +1487,13 @@ def test_override_with_nested_config():
 def test_override_preserves_defaults():
     """Test that overrides only affect specified parameters."""
     step = MockStepWithNonSerializableParam(name="test", multiplier=2.0)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Override only one parameter
-        loaded = RobotProcessor.from_pretrained(
+        loaded = DataProcessorPipeline.from_pretrained(
             tmp_dir,
             overrides={
                 "MockStepWithNonSerializableParam": {
@@ -1507,7 +1511,7 @@ def test_override_preserves_defaults():
 def test_override_type_validation():
     """Test that type errors in overrides are caught properly."""
     step = MockStepWithTensorState(learning_rate=0.01)
-    pipeline = RobotProcessor([step])
+    pipeline = DataProcessorPipeline([step])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -1520,7 +1524,7 @@ def test_override_type_validation():
         }
 
         with pytest.raises(ValueError, match="Failed to instantiate"):
-            RobotProcessor.from_pretrained(tmp_dir, overrides=overrides)
+            DataProcessorPipeline.from_pretrained(tmp_dir, overrides=overrides)
 
 
 def test_override_with_callables():
@@ -1553,7 +1557,7 @@ def test_override_with_callables():
 
     try:
         step = CallableStep()
-        pipeline = RobotProcessor([step])
+        pipeline = DataProcessorPipeline([step])
 
         with tempfile.TemporaryDirectory() as tmp_dir:
             pipeline.save_pretrained(tmp_dir)
@@ -1567,7 +1571,7 @@ def test_override_with_callables():
                 return x
 
             # Load with callable override
-            loaded = RobotProcessor.from_pretrained(
+            loaded = DataProcessorPipeline.from_pretrained(
                 tmp_dir,
                 overrides={"callable_step": {"transform_fn": double_values}},
                 to_transition=lambda x: x,
@@ -1586,13 +1590,13 @@ def test_override_multiple_same_class_warning():
     """Test behavior when multiple steps of same class exist."""
     step1 = MockStepWithNonSerializableParam(name="step1", multiplier=1.0)
     step2 = MockStepWithNonSerializableParam(name="step2", multiplier=2.0)
-    pipeline = RobotProcessor([step1, step2])
+    pipeline = DataProcessorPipeline([step1, step2])
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Override affects all instances of the class
-        loaded = RobotProcessor.from_pretrained(
+        loaded = DataProcessorPipeline.from_pretrained(
             tmp_dir, overrides={"MockStepWithNonSerializableParam": {"multiplier": 10.0}}
         )
 
@@ -1608,7 +1612,7 @@ def test_override_multiple_same_class_warning():
 def test_config_filename_special_characters():
     """Test config filenames with special characters are sanitized."""
     # Processor name with special characters
-    pipeline = RobotProcessor([MockStep()], name="My/Processor\\With:Special*Chars")
+    pipeline = DataProcessorPipeline([MockStep()], name="My/Processor\\With:Special*Chars")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
@@ -1626,10 +1630,10 @@ def test_state_file_naming_with_multiple_processors():
     """Test that state files are properly prefixed with pipeline names to avoid conflicts."""
     # Create two processors with state
     step1 = MockStepWithTensorState(name="norm", window_size=5)
-    preprocessor = RobotProcessor([step1], name="PreProcessor")
+    preprocessor = DataProcessorPipeline([step1], name="PreProcessor")
 
     step2 = MockStepWithTensorState(name="norm", window_size=10)
-    postprocessor = RobotProcessor([step2], name="PostProcessor")
+    postprocessor = DataProcessorPipeline([step2], name="PostProcessor")
 
     # Process some data to create state
     for i in range(3):
@@ -1649,8 +1653,8 @@ def test_state_file_naming_with_multiple_processors():
         assert (Path(tmp_dir) / "postprocessor_step_0.safetensors").exists()
 
         # Load both back and verify they work correctly
-        loaded_pre = RobotProcessor.from_pretrained(tmp_dir, config_filename="preprocessor.json")
+        loaded_pre = DataProcessorPipeline.from_pretrained(tmp_dir, config_filename="preprocessor.json")
-        loaded_post = RobotProcessor.from_pretrained(tmp_dir, config_filename="postprocessor.json")
+        loaded_post = DataProcessorPipeline.from_pretrained(tmp_dir, config_filename="postprocessor.json")
 
         assert loaded_pre.name == "PreProcessor"
         assert loaded_post.name == "PostProcessor"
@@ -1688,14 +1692,14 @@ def test_override_with_device_strings():
 
     try:
         step = DeviceAwareStep(device="cpu")
-        pipeline = RobotProcessor([step])
+        pipeline = DataProcessorPipeline([step])
 
         with tempfile.TemporaryDirectory() as tmp_dir:
             pipeline.save_pretrained(tmp_dir)
 
             # Override device
             if torch.cuda.is_available():
-                loaded = RobotProcessor.from_pretrained(
+                loaded = DataProcessorPipeline.from_pretrained(
                     tmp_dir, overrides={"device_aware_step": {"device": "cuda:0"}}
                 )
 
@@ -1714,16 +1718,16 @@ def test_from_pretrained_nonexistent_path():
 
     # Test with an invalid repo ID (too many slashes) - caught by HF validation
     with pytest.raises(HFValidationError):
-        RobotProcessor.from_pretrained("/path/that/does/not/exist")
+        DataProcessorPipeline.from_pretrained("/path/that/does/not/exist")
 
     # Test with a non-existent but valid Hub repo format
     with pytest.raises((FileNotFoundError, HfHubHTTPError)):
-        RobotProcessor.from_pretrained("nonexistent-user/nonexistent-repo")
+        DataProcessorPipeline.from_pretrained("nonexistent-user/nonexistent-repo")
 
     # Test with a local directory that exists but has no config files
     with tempfile.TemporaryDirectory() as tmp_dir:
         with pytest.raises(FileNotFoundError, match="No .json configuration files found"):
-            RobotProcessor.from_pretrained(tmp_dir)
+            DataProcessorPipeline.from_pretrained(tmp_dir)
 
 
 def test_save_load_with_custom_converter_functions():
@@ -1752,13 +1756,15 @@ def test_save_load_with_custom_converter_functions():
         }
 
     # Create processor with custom converters
-    pipeline = RobotProcessor([MockStep()], to_transition=custom_to_transition, to_output=custom_to_output)
+    pipeline = DataProcessorPipeline(
+        [MockStep()], to_transition=custom_to_transition, to_output=custom_to_output
+    )
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         pipeline.save_pretrained(tmp_dir)
 
         # Load - should use default converters
-        loaded = RobotProcessor.from_pretrained(tmp_dir)
+        loaded = DataProcessorPipeline.from_pretrained(tmp_dir)
 
         # Verify it uses default converters by checking with standard batch format
         batch = {
@@ -1792,7 +1798,7 @@ class NonCallableStep:
 
 def test_construction_rejects_step_without_call():
     with pytest.raises(TypeError, match=r"must define __call__"):
-        RobotProcessor([NonCallableStep()])
+        DataProcessorPipeline([NonCallableStep()])
 
 
 @dataclass
@@ -1851,7 +1857,7 @@ class FeatureContractRemoveStep:
 
 
 def test_features_orders_and_merges(policy_feature_factory):
-    p = RobotProcessor(
+    p = DataProcessorPipeline(
         [
             FeatureContractAddStep("a", policy_feature_factory(FeatureType.STATE, (1,))),
             FeatureContractMutateStep("a", lambda v: PolicyFeature(type=v.type, shape=(3,))),
@@ -1870,7 +1876,7 @@ def test_features_respects_initial_without_mutation(policy_feature_factory):
         "seed": policy_feature_factory(FeatureType.STATE, (7,)),
         "nested": policy_feature_factory(FeatureType.ENV, (0,)),
     }
-    p = RobotProcessor(
+    p = DataProcessorPipeline(
         [
             FeatureContractMutateStep("seed", lambda v: PolicyFeature(type=v.type, shape=(v.shape[0] + 1,))),
             FeatureContractMutateStep(
@@ -1903,12 +1909,12 @@ def test_features_execution_order_tracking():
             features["order"] = PolicyFeature(type=pf.type, shape=pf.shape + (code,))
             return features
 
-    out = RobotProcessor([Track("A"), Track("B"), Track("C")]).transform_features({})
+    out = DataProcessorPipeline([Track("A"), Track("B"), Track("C")]).transform_features({})
     assert out["order"].shape == (1, 2, 3)
 
 
 def test_features_remove_key(policy_feature_factory):
-    p = RobotProcessor(
+    p = DataProcessorPipeline(
         [
             FeatureContractAddStep("a", policy_feature_factory(FeatureType.STATE, (1,))),
             FeatureContractRemoveStep("a"),
@@ -1923,7 +1929,7 @@ def test_features_remove_from_initial(policy_feature_factory):
         "keep": policy_feature_factory(FeatureType.STATE, (1,)),
         "drop": policy_feature_factory(FeatureType.STATE, (1,)),
     }
-    p = RobotProcessor([FeatureContractRemoveStep("drop")])
+    p = DataProcessorPipeline([FeatureContractRemoveStep("drop")])
     out = p.transform_features(initial_features=initial)
     assert "drop" not in out and out["keep"] == initial["keep"]
 
@@ -1965,7 +1971,7 @@ class AddObservationStateFeatures:
 
 
 def test_aggregate_joint_action_only():
-    rp = RobotProcessor([AddActionEEAndJointFeatures()])
+    rp = DataProcessorPipeline([AddActionEEAndJointFeatures()])
     initial = {"front": (480, 640, 3)}
 
     out = aggregate_pipeline_dataset_features(
@@ -1983,7 +1989,7 @@ def test_aggregate_joint_action_only():
 
 
 def test_aggregate_ee_action_and_observation_with_videos():
-    rp = RobotProcessor([AddActionEEAndJointFeatures(), AddObservationStateFeatures()])
+    rp = DataProcessorPipeline([AddActionEEAndJointFeatures(), AddObservationStateFeatures()])
     initial = {"front": (480, 640, 3), "side": (720, 1280, 3)}
 
     out = aggregate_pipeline_dataset_features(
@@ -2013,7 +2019,7 @@ def test_aggregate_ee_action_and_observation_with_videos():
 
 
 def test_aggregate_both_action_types():
-    rp = RobotProcessor([AddActionEEAndJointFeatures()])
+    rp = DataProcessorPipeline([AddActionEEAndJointFeatures()])
     out = aggregate_pipeline_dataset_features(
         pipeline=rp,
         initial_features={},
@@ -2028,7 +2034,7 @@ def test_aggregate_both_action_types():
 
 
 def test_aggregate_images_when_use_videos_false():
-    rp = RobotProcessor([AddObservationStateFeatures(add_front_image=True)])
+    rp = DataProcessorPipeline([AddObservationStateFeatures(add_front_image=True)])
     initial = {"back": (480, 640, 3)}
 
     out = aggregate_pipeline_dataset_features(
@@ -2045,7 +2051,7 @@ def test_aggregate_images_when_use_videos_false():
 
 
 def test_aggregate_images_when_use_videos_true():
-    rp = RobotProcessor([AddObservationStateFeatures(add_front_image=True)])
+    rp = DataProcessorPipeline([AddObservationStateFeatures(add_front_image=True)])
     initial = {"back": (480, 640, 3)}
 
     out = aggregate_pipeline_dataset_features(
@@ -2067,7 +2073,9 @@ def test_aggregate_images_when_use_videos_true():
 def test_initial_camera_not_overridden_by_step_image():
     # Step explicitly sets a different front image shape; initial has another shape.
     # aggregate_pipeline_dataset_features should keep the step's value (setdefault behavior on initial cams).
-    rp = RobotProcessor([AddObservationStateFeatures(add_front_image=True, front_image_shape=(240, 320, 3))])
+    rp = DataProcessorPipeline(
+        [AddObservationStateFeatures(add_front_image=True, front_image_shape=(240, 320, 3))]
+    )
     initial = {"front": (480, 640, 3)}  # should NOT override the step-provided (240, 320, 3)
 
     out = aggregate_pipeline_dataset_features(

tests/processor/test_rename_processor.py

@@ -21,9 +21,9 @@ import torch
 
 from lerobot.configs.types import FeatureType
 from lerobot.processor import (
+    DataProcessorPipeline,
     ProcessorStepRegistry,
     RenameProcessor,
-    RobotProcessor,
     TransitionKey,
 )
 from lerobot.processor.rename_processor import rename_stats
@@ -193,7 +193,7 @@ def test_integration_with_robot_processor():
     }
     rename_processor = RenameProcessor(rename_map=rename_map)
 
-    pipeline = RobotProcessor([rename_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([rename_processor], to_transition=lambda x: x, to_output=lambda x: x)
 
     observation = {
         "agent_pos": np.array([1.0, 2.0, 3.0]),
@@ -226,7 +226,7 @@ def test_save_and_load_pretrained():
         "old_image": "observation.image",
     }
     processor = RenameProcessor(rename_map=rename_map)
-    pipeline = RobotProcessor([processor], name="TestRenameProcessor")
+    pipeline = DataProcessorPipeline([processor], name="TestRenameProcessor")
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save pipeline
@@ -241,7 +241,7 @@ def test_save_and_load_pretrained():
         assert len(state_files) == 0
 
         # Load pipeline
-        loaded_pipeline = RobotProcessor.from_pretrained(
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(
             tmp_dir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -284,7 +284,7 @@ def test_registry_functionality():
 def test_registry_based_save_load():
     """Test save/load using registry name instead of module path."""
     processor = RenameProcessor(rename_map={"key1": "renamed_key1"})
-    pipeline = RobotProcessor([processor], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline([processor], to_transition=lambda x: x, to_output=lambda x: x)
 
     with tempfile.TemporaryDirectory() as tmp_dir:
         # Save and load
@@ -293,7 +293,7 @@ def test_registry_based_save_load():
         # Verify config uses registry name
         import json
 
-        with open(Path(tmp_dir) / "robotprocessor.json") as f:  # Default name is "RobotProcessor"
+        with open(Path(tmp_dir) / "dataprocessorpipeline.json") as f:  # Default name is "RobotProcessor"
             config = json.load(f)
 
         assert "registry_name" in config["steps"][0]
@@ -301,7 +301,7 @@ def test_registry_based_save_load():
         assert "class" not in config["steps"][0]  # Should use registry, not module path
 
         # Load should work
-        loaded_pipeline = RobotProcessor.from_pretrained(tmp_dir)
+        loaded_pipeline = DataProcessorPipeline.from_pretrained(tmp_dir)
         loaded_processor = loaded_pipeline.steps[0]
         assert isinstance(loaded_processor, RenameProcessor)
         assert loaded_processor.rename_map == {"key1": "renamed_key1"}
@@ -325,7 +325,9 @@ def test_chained_rename_processors():
         }
     )
 
-    pipeline = RobotProcessor([processor1, processor2], to_transition=lambda x: x, to_output=lambda x: x)
+    pipeline = DataProcessorPipeline(
+        [processor1, processor2], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     observation = {
         "pos": np.array([1.0, 2.0]),
@@ -459,7 +461,7 @@ def test_features_chained_processors(policy_feature_factory):
     processor2 = RenameProcessor(
         rename_map={"agent_position": "observation.state", "camera_image": "observation.image"}
     )
-    pipeline = RobotProcessor([processor1, processor2])
+    pipeline = DataProcessorPipeline([processor1, processor2])
 
     spec = {
         "pos": policy_feature_factory(FeatureType.STATE, (7,)),

tests/processor/test_sac_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import ACTION, OBS_STATE
 from lerobot.policies.sac.configuration_sac import SACConfig
 from lerobot.policies.sac.processor_sac import make_sac_pre_post_processors
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TransitionKey,
     UnnormalizerProcessor,
@@ -234,13 +234,13 @@ def test_sac_processor_without_stats():
     factory_preprocessor, factory_postprocessor = make_sac_pre_post_processors(config, dataset_stats=None)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(
+    preprocessor = DataProcessorPipeline(
         factory_preprocessor.steps,
         name=factory_preprocessor.name,
         to_transition=lambda x: x,
         to_output=lambda x: x,
     )
-    postprocessor = RobotProcessor(
+    postprocessor = DataProcessorPipeline(
         factory_postprocessor.steps,
         name=factory_postprocessor.name,
         to_transition=lambda x: x,
@@ -277,7 +277,7 @@ def test_sac_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )
 

tests/processor/test_tdmpc_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import ACTION, OBS_IMAGE, OBS_STATE
 from lerobot.policies.tdmpc.configuration_tdmpc import TDMPCConfig
 from lerobot.policies.tdmpc.processor_tdmpc import make_tdmpc_pre_post_processors
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TransitionKey,
     UnnormalizerProcessor,
@@ -251,13 +251,13 @@ def test_tdmpc_processor_without_stats():
     factory_preprocessor, factory_postprocessor = make_tdmpc_pre_post_processors(config, dataset_stats=None)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(
+    preprocessor = DataProcessorPipeline(
         factory_preprocessor.steps,
         name=factory_preprocessor.name,
         to_transition=lambda x: x,
         to_output=lambda x: x,
     )
-    postprocessor = RobotProcessor(
+    postprocessor = DataProcessorPipeline(
         factory_postprocessor.steps,
         name=factory_postprocessor.name,
         to_transition=lambda x: x,
@@ -297,7 +297,7 @@ def test_tdmpc_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )
 

tests/processor/test_tokenizer_processor.py

@@ -10,7 +10,7 @@ import torch
 
 from lerobot.configs.types import FeatureType, PolicyFeature
 from lerobot.constants import OBS_LANGUAGE
-from lerobot.processor import RobotProcessor, TokenizerProcessor, TransitionKey
+from lerobot.processor import DataProcessorPipeline, TokenizerProcessor, TransitionKey
 from tests.utils import require_package
 
 
@@ -388,7 +388,9 @@ def test_integration_with_robot_processor(mock_auto_tokenizer):
     mock_auto_tokenizer.from_pretrained.return_value = mock_tokenizer
 
     tokenizer_processor = TokenizerProcessor(tokenizer_name="test-tokenizer", max_length=6)
-    robot_processor = RobotProcessor([tokenizer_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    robot_processor = DataProcessorPipeline(
+        [tokenizer_processor], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     transition = create_transition(
         observation={"state": torch.tensor([1.0, 2.0])},
@@ -426,14 +428,16 @@ def test_save_and_load_pretrained_with_tokenizer_name(mock_auto_tokenizer):
         tokenizer_name="test-tokenizer", max_length=32, task_key="instruction"
     )
 
-    robot_processor = RobotProcessor([original_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    robot_processor = DataProcessorPipeline(
+        [original_processor], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     with tempfile.TemporaryDirectory() as temp_dir:
         # Save processor
         robot_processor.save_pretrained(temp_dir)
 
         # Load processor - tokenizer will be recreated from saved config
-        loaded_processor = RobotProcessor.from_pretrained(
+        loaded_processor = DataProcessorPipeline.from_pretrained(
             temp_dir, to_transition=lambda x: x, to_output=lambda x: x
         )
 
@@ -457,14 +461,16 @@ def test_save_and_load_pretrained_with_tokenizer_object():
 
     original_processor = TokenizerProcessor(tokenizer=mock_tokenizer, max_length=32, task_key="instruction")
 
-    robot_processor = RobotProcessor([original_processor], to_transition=lambda x: x, to_output=lambda x: x)
+    robot_processor = DataProcessorPipeline(
+        [original_processor], to_transition=lambda x: x, to_output=lambda x: x
+    )
 
     with tempfile.TemporaryDirectory() as temp_dir:
         # Save processor
         robot_processor.save_pretrained(temp_dir)
 
         # Load processor with tokenizer override (since tokenizer object wasn't saved)
-        loaded_processor = RobotProcessor.from_pretrained(
+        loaded_processor = DataProcessorPipeline.from_pretrained(
             temp_dir,
             overrides={"tokenizer_processor": {"tokenizer": mock_tokenizer}},
             to_transition=lambda x: x,
@@ -956,7 +962,7 @@ def test_integration_with_device_processor(mock_auto_tokenizer):
     # Create pipeline with TokenizerProcessor then DeviceProcessor
     tokenizer_processor = TokenizerProcessor(tokenizer_name="test-tokenizer", max_length=6)
     device_processor = DeviceProcessor(device="cuda:0")
-    robot_processor = RobotProcessor(
+    robot_processor = DataProcessorPipeline(
         [tokenizer_processor, device_processor], to_transition=lambda x: x, to_output=lambda x: x
     )
 

tests/processor/test_vqbet_processor.py

@@ -25,10 +25,10 @@ from lerobot.constants import ACTION, OBS_IMAGE, OBS_STATE
 from lerobot.policies.vqbet.configuration_vqbet import VQBeTConfig
 from lerobot.policies.vqbet.processor_vqbet import make_vqbet_pre_post_processors
 from lerobot.processor import (
+    DataProcessorPipeline,
     DeviceProcessor,
     NormalizerProcessor,
     RenameProcessor,
-    RobotProcessor,
     ToBatchProcessor,
     TransitionKey,
     UnnormalizerProcessor,
@@ -244,13 +244,13 @@ def test_vqbet_processor_without_stats():
     factory_preprocessor, factory_postprocessor = make_vqbet_pre_post_processors(config, dataset_stats=None)
 
     # Create new processors with EnvTransition input/output
-    preprocessor = RobotProcessor(
+    preprocessor = DataProcessorPipeline(
         factory_preprocessor.steps,
         name=factory_preprocessor.name,
         to_transition=lambda x: x,
         to_output=lambda x: x,
     )
-    postprocessor = RobotProcessor(
+    postprocessor = DataProcessorPipeline(
         factory_postprocessor.steps,
         name=factory_postprocessor.name,
         to_transition=lambda x: x,
@@ -290,7 +290,7 @@ def test_vqbet_processor_save_and_load():
         preprocessor.save_pretrained(tmpdir)
 
         # Load preprocessor
-        loaded_preprocessor = RobotProcessor.from_pretrained(
+        loaded_preprocessor = DataProcessorPipeline.from_pretrained(
             tmpdir, to_transition=lambda x: x, to_output=lambda x: x
         )