Type List

Axis-aligned bounding box. Donor: oa::Aabb in oacpp/source/cpp/include/oa/render/fnMesh.h.

Axis-aligned bounding box. Donor: oa::Aabb in oacpp/source/cpp/include/oa/render/fnMesh.h.

Environment-neutral discrete actor/critic behavior. PPO depends on this contract rather than a concrete network architecture.

Policy logits and scalar critic value produced from one observation batch.

optimizer over stable Parameter handles.

optimizer over stable Parameter handles.

Decoupled-weight-decay Adam optimizer over stable Parameter handles.

Decoupled-weight-decay Adam optimizer over stable Parameter handles.

Struct in the Ml module.

Parameterless adaptive average-pooling module for NCHW matrices.

Translation, rotation, signed scale, row-basis shear, and reflection.

Alpha blending mode for UnlitMaterial and StandardSurfaceMaterial.

Alpha blending mode for UnlitMaterial and StandardSurfaceMaterial.

Execution policy for scaled dot-product attention. Auto selects only a route proven by device-specific performance evidence. It currently preserves the compositional AttentionBackend::Standard provider on every device.

Token-visibility contract for self-attention.

Whole-audio value backed by a planar FP32 [channels, samples] matrix. Clones retain the same matrix storage and semantic audio metadata.

Whole-audio value backed by a planar FP32 [channels, samples] matrix. Clones retain the same matrix storage and semantic audio metadata.

Stateful default-device audio capture session.

Stateful default-device audio capture session.

One contiguous run of captured interleaved FP32 frames.

Configuration for one default-device capture session.

Speaker layout carried by an Audio value.

Speaker layout carried by an Audio value.

Elementary audio representation produced by AudioEncoder.

Configuration for one streaming audio encoder.

Stateful deterministic PCM-S16 audio encoder. Input is interleaved FP32. Complete configured packets are emitted by encode; flush emits a final partial packet. close deliberately discards an unflushed partial packet, matching the donor lifecycle contract. Dropping the encoder only releases host state and never flushes implicitly.

Stateful deterministic PCM-S16 audio encoder. Input is interleaved FP32. Complete configured packets are emitted by encode; flush emits a final partial packet. close deliberately discards an unflushed partial packet, matching the donor lifecycle contract. Dropping the encoder only releases host state and never flushes implicitly.

Incremental WAV, FLAC, or MP3 playback through the default output device.

Incremental WAV, FLAC, or MP3 playback through the default output device.

Configuration for one incremental playback session.

Structural counts for one raw or IVF-wrapped AV1 access unit.

AV1 chroma sample position for 4:2:0 streams.

How a sequence constrains one optional frame coding tool.

Parsed AV1 color configuration required by decoder backends.

Optional AV1 color-description triplet.

Parsed AV1 uncompressed frame header required by picture submission.

AV1 uncompressed-header frame identity.

AV1 interpolation-filter selection.

One borrowed AV1 OBU and its exact access-unit byte range.

AV1 open-bitstream-unit identity.

One AV1 operating point declared by a sequence header.

AV1 profile identity used for exact decoder capability queries.

Logical AV1 reference-map order hints supplied to a stateless frame parse.

AV1 loop-restoration mode for one plane.

Parsed AV1 sequence header required by decode-session setup.

Exact access-unit byte ranges for one AV1 tile group.

AV1 sequence-level timing metadata.

AV1 transform-mode selection.

Parameterless two-dimensional average-pooling module for NCHW matrices.

One subplot inside an oa::plot::Figure.

One subplot inside an oa::plot::Figure.

Per-series bar style.

Per-series bar style.

Batched output: x [B, …] and optional y [B, …]. Corresponds to oa::DataLoader::Batch.

Batched output: x [B, …] and optional y [B, …]. Corresponds to oa::DataLoader::Batch.

Trainable FP32 BatchNorm over channels of NCHW matrices.

Batch-normalized values and the per-channel statistics saved for backward.

Real, a0-normalized coefficients for one stable biquad section.

Sampling behavior for coordinates outside an image.

One learned byte-pair merge. Merge rank i creates token 256 + i.

One learned byte-pair merge. Merge rank i creates token 256 + i.

Deterministic byte-pair encoder compatible with OA’s oa_bpe_v1 files.

Deterministic byte-pair encoder compatible with OA’s oa_bpe_v1 files.

Read/write access qualifier for a buffer binding. Port provenance: oa::BufferAccess in oa/core/bufferAccess.h.

Read/write access qualifier for a buffer binding. Port provenance: oa::BufferAccess in oa/core/bufferAccess.h.

Fixed 256-row trainable embedding for packed U8 or U32 byte IDs.

Trainable affine output head from hidden rows to 256 byte logits.

Keras-style hook interface for OA iterator sessions. Attach one or more callbacks to a session via its add_callback method. All hooks receive a &dyn IteratorContext so callbacks stay decoupled from the concrete session type. Mapping from C++C++Rust onBegin(Iterator&)on_begin(&mut self, ctx) onStep(Iterator&)on_step(&mut self, ctx) onEnd(Iterator&)on_end(&mut self, ctx) C++ used virtual inheritance; Rust uses dynamic dispatch through Box<dyn Callback>. The C++ move-constructor convention maps to Rust’s normal ownership — place Box<dyn Callback> values in a Vec rather than raw pointers.

Keras-style hook interface for OA iterator sessions. Attach one or more callbacks to a session via its add_callback method. All hooks receive a &dyn IteratorContext so callbacks stay decoupled from the concrete session type. Mapping from C++C++Rust onBegin(Iterator&)on_begin(&mut self, ctx) onStep(Iterator&)on_step(&mut self, ctx) onEnd(Iterator&)on_end(&mut self, ctx) C++ used virtual inheritance; Rust uses dynamic dispatch through Box<dyn Callback>. The C++ move-constructor convention maps to Rust’s normal ownership — place Box<dyn Callback> values in a Vec rather than raw pointers.

Keras-style hook interface for OA iterator sessions. Attach one or more callbacks to a session via its add_callback method. All hooks receive a &dyn IteratorContext so callbacks stay decoupled from the concrete session type. Mapping from C++C++Rust onBegin(Iterator&)on_begin(&mut self, ctx) onStep(Iterator&)on_step(&mut self, ctx) onEnd(Iterator&)on_end(&mut self, ctx) C++ used virtual inheritance; Rust uses dynamic dispatch through Box<dyn Callback>. The C++ move-constructor convention maps to Rust’s normal ownership — place Box<dyn Callback> values in a Vec rather than raw pointers.

Ordered list of Callback objects attached to a session. Callbacks fire in insertion order. This mirrors oa::Iterator::addCallback but is an explicit value rather than a virtual base member so the concrete session type can own it directly.

Ordered list of Callback objects attached to a session. Callbacks fire in insertion order. This mirrors oa::Iterator::addCallback but is an explicit value rather than a virtual base member so the concrete session type can own it directly.

Ordered list of Callback objects attached to a session. Callbacks fire in insertion order. This mirrors oa::Iterator::addCallback but is an explicit value rather than a virtual base member so the concrete session type can own it directly.

Semantic camera value. Composes a Transform (placement) with lens parameters (projection shape). get_view_matrix derives from the transform’s position and forward direction. get_projection_matrix uses the lens parameters with Vulkan clip-space conventions (reversed-Y, depth [0, 1]). Donor: oa::Camera / oa::FnCamera.

Semantic camera value. Composes a Transform (placement) with lens parameters (projection shape). get_view_matrix derives from the transform’s position and forward direction. get_projection_matrix uses the lens parameters with Vulkan clip-space conventions (reversed-Y, depth [0, 1]). Donor: oa::Camera / oa::FnCamera.

Projection kind for a Camera.

Projection kind for a Camera.

Handle-free lifetime and stable-frame evidence for one captured resource. Resource IDs follow deterministic graph-resource order and never expose a Vulkan handle or bindless descriptor. Alias-candidate state records completed liveness, external-output, and storage-owner qualification; physical storage is not shared until a later materialization stage succeeds transactionally.

Handle-free lifetime and stable-frame evidence for one captured resource. Resource IDs follow deterministic graph-resource order and never expose a Vulkan handle or bindless descriptor. Alias-candidate state records completed liveness, external-output, and storage-owner qualification; physical storage is not shared until a later materialization stage succeeds transactionally.

Default two-tower categorical actor/critic MLP. Policy and value paths are independent Linear -> ReLU -> Linear -> ReLU -> Linear towers, matching OA C++.

Dimensions and deterministic initialization seed for the default MLP.

OA C++ compatibility spelling for Checkpoint.

OA C++ compatibility spelling for CsvLogger.

OA C++ compatibility spelling for EarlyStopping.

OA C++ compatibility spelling for LearningRateScheduler.

OA C++ compatibility spelling for PhaseSchedule.

OA C++ compatibility spelling for ProgressBar.

OA C++ compatibility spelling for TrainingSummary.

OA C++ compatibility spelling for Validation.

Pixel rect returned by Figure::cell_rect. Donor: oa::plot::Figure::Rect.

Complete adjoints of channel-axis normalization over BCT storage.

Epoch, interval, best-model, and restore-best checkpoint policy.

Shared checkpoint-save configuration. Used as a building block in CLI configs and passed to crate::ml::training::CbCheckpoint.

Shared checkpoint-save configuration. Used as a building block in CLI configs and passed to crate::ml::training::CbCheckpoint.

Shared checkpoint-save configuration. Used as a building block in CLI configs and passed to crate::ml::training::CbCheckpoint.

Stateful checkpoint selection and bounded incremental-retention policy.

Filesystem and metric policy for CheckpointManager.

Optimizer with a complete native .oam save-and-restore contract. This capability is sealed because persistence must remain synchronized with OA’s versioned model-file codec. Custom optimizers can implement Optimizer for eager training without claiming wire compatibility.

Optimizer with a complete native .oam save-and-restore contract. This capability is sealed because persistence must remain synchronized with OA’s versioned model-file codec. Custom optimizers can implement Optimizer for eager training without claiming wire compatibility.

Command-line configuration with YAML + argv precedence. Type parameter C is any config struct that implements Default. Defaults are the base layer; a YAML file loaded via -c/--config overrides them; explicit argv flags override those. YAML support YAML loading is the caller’s responsibility. Pass a loader closure to Cli::parse_args_with_yaml to apply YAML fields before argv parsing when a -c/--config path is present.

Command-line configuration with YAML + argv precedence. Type parameter C is any config struct that implements Default. Defaults are the base layer; a YAML file loaded via -c/--config overrides them; explicit argv flags override those. YAML support YAML loading is the caller’s responsibility. Pass a loader closure to Cli::parse_args_with_yaml to apply YAML fields before argv parsing when a -c/--config path is present.

Command-line configuration with YAML + argv precedence. Type parameter C is any config struct that implements Default. Defaults are the base layer; a YAML file loaded via -c/--config overrides them; explicit argv flags override those. YAML support YAML loading is the caller’s responsibility. Pass a loader closure to Cli::parse_args_with_yaml to apply YAML fields before argv parsing when a -c/--config path is present.

A named subcommand (or the implicit root command). Options registered on a Cmd are only matched when that subcommand is active. The root Cmd is always active.

Four-component RGBA color used by UI, plotting, overlays, and ordinary normalized render colors.

Four-component RGBA color used by UI, plotting, overlays, and ordinary normalized render colors.

One bounded continuous action and its differentiable policy statistics.

One bounded continuous action and its differentiable policy statistics.

Trainable FP32 one-dimensional convolution over NCL matrices.

Trainable grouped FP32 two-dimensional convolution over NCHW matrices.

Trainable bias-free FP32 one-dimensional transposed convolution over NCL matrices.

Trainable FP32 two-dimensional transposed convolution over NCHW matrices.

Cosine annealing from a maximum rate to a minimum rate.

Cosine annealing with periodic warm restarts.

Buffered one-row-per-completed-step CSV logger. File creation, writes, and close-time flushing happen only at explicit callback boundaries. Abandoning the callback discards any unflushed host buffer; Drop does not hide an I/O failure.

Amplitude policy for CyclicScheduler.

Triangular cyclic learning-rate policy.

Type alias in the Core module.

Stateful batch iterator over a borrowed Dataset. Corresponds to oa::DataLoader.

Stateful batch iterator over a borrowed Dataset. Corresponds to oa::DataLoader.

Configuration for DataLoader. Corresponds to oa::DataLoaderConfig.

Configuration for DataLoader. Corresponds to oa::DataLoaderConfig.

Object-safe dataset contract: indexed access and a total count. Corresponds to the C++ pure-virtual oa::Dataset base class.

Object-safe dataset contract: indexed access and a total count. Corresponds to the C++ pure-virtual oa::Dataset base class.

UTC human-readable date/time. For log display and file naming only — never for consensus or deterministic math.

UTC human-readable date/time. For log display and file naming only — never for consensus or deterministic math.

UTC human-readable date/time. For log display and file naming only — never for consensus or deterministic math.

Device-resident object-detection evaluation outputs.

Hardware identity and resource facts captured at engine construction. Vulkan limits and exposed memory capacity can change with driver policy. Budget and usage are snapshots, not immutable hardware properties. Descriptor capacities describe the allocated heap after negotiation.

Hardware identity and resource facts captured at engine construction. Vulkan limits and exposed memory capacity can change with driver policy. Budget and usage are snapshots, not immutable hardware properties. Descriptor capacities describe the allocated heap after negotiation.

Immutable device facts captured for the device owned by one engine. Composes DeviceHardwareInfo (PCI, local memory, limits, queue presence) and DeviceSoftwareInfo (driver/API version, feature booleans).

Immutable device facts captured for the device owned by one engine. Composes DeviceHardwareInfo (PCI, local memory, limits, queue presence) and DeviceSoftwareInfo (driver/API version, feature booleans).

Broad Vulkan physical-device kind reported for diagnostics. Election never assigns a performance rank to this value. Integrated, discrete, virtual, and other hardware all compete using queried features and resource capacities.

Broad Vulkan physical-device kind reported for diagnostics. Election never assigns a performance rank to this value. Integrated, discrete, virtual, and other hardware all compete using queried features and resource capacities.

Policy for selecting the local device owned by an engine.

Policy for selecting the local device owned by an engine.

Immutable software facts for the device owned by one engine. These reflect the installed driver: API version, driver version, driver identity, and queried feature support. They may change across driver updates without any hardware change.

Immutable software facts for the device owned by one engine. These reflect the installed driver: API version, driver version, driver identity, and queried feature support. They may change across driver updates without any hardware change.

Discovery-only identity for an enumerated Vulkan device. Includes software and unsupported devices. Discovery creates no logical device or pipelines and does not imply OA admission. Indices belong to the current loader/ICD enumeration; they are not persistent device identities.

Discovery-only identity for an enumerated Vulkan device. Includes software and unsupported devices. Discovery creates no logical device or pipelines and does not imply OA admission. Indices belong to the current loader/ICD enumeration; they are not persistent device identities.

Type alias in the Core module.

Type alias in the Core module.

Discount applied to the non-terminal next-state value in DQN.

Selected action values, detached targets, and scalar DQN loss.

Stateful DQN training coordinator over caller-owned components. The online module, target module, optimizer, replay storage, and engine remain caller-owned and must outlive this coordinator. Dropping the trainer does not submit, wait, synchronize targets, or fire terminal callbacks; use DqnTrainer::finish for the explicit terminal boundary.

Fixed update budget, replay batch, target cadence, and Bellman policy.

Last completed DQN update and its synchronized scalar loss.

Type alias in the Core module.

Inverted Dropout with explicit train/eval behavior.

Type alias in the Core module.

Scalar data representation of an OA value.

Scalar data representation of an OA value.

Type alias in the Core module.

Type alias in the Core module.

Type alias in the Core module.

Type alias in the Core module.

Improvement direction for EarlyStopping.

Cooperative epoch-boundary early stopping.

Rust host type that has one exact admitted dense DType representation. This trait is sealed so OA can uphold the no-padding and bit-validity requirements used by checked upload and readback.

Trainable FP32 lookup table indexed by an arbitrary-shape U8, U32, or I32 matrix.

OA’s embedding-plus-Mamba core with one canonical Rust execution path. The C++ donor currently carries renamed Empyrealm shader copies whose SPIR-V is identical to the Mamba-3 providers. Rust preserves the public module and parameter topology while reusing Mamba3 until the algorithms actually diverge.

One encoded elementary-stream packet with frame-domain timing.

One owned Annex-B video access unit with microsecond presentation timing.

Sole owner of OA’s local execution services. The current one-device recorder is thread-affine. Engine intentionally remains neither Send nor Sync until concurrent queue scheduling and submission synchronization are implemented and verified.

Sole owner of OA’s local execution services. The current one-device recorder is thread-affine. Engine intentionally remains neither Send nor Sync until concurrent queue scheduling and submission synchronization are implemented and verified.

Configuration used to construct one OA execution engine.

Configuration used to construct one OA execution engine.

Optional services that the selected device must provide. Compute is always required. These predicates constrain physical-device admission before the logical device is created; they do not expose kernel selection or vendor policy. Presentation readiness proves a graphics queue and swapchain support for an instance created with surface extensions. The eventual Presenter still verifies the concrete window surface.

Optional services that the selected device must provide. Compute is always required. These predicates constrain physical-device admission before the logical device is created; they do not expose kernel selection or vendor policy. Presentation readiness proves a graphics queue and swapchain support for an instance created with surface extensions. The eventual Presenter still verifies the concrete window surface.

Single-source environment-variable reader for OA runtime knobs.

Single-source environment-variable reader for OA runtime knobs.

Single-source environment-variable reader for OA runtime knobs.

Stateful native vector-environment behavior. Implementations own semantic environment state and embed exactly one EnvironmentExecution. Public default methods own transaction state, validation boundaries, submission, and rollback; implementations only author reset/step/reset-completed commands and transactional host metadata.

Private command transaction and exact completion state for one environment. Native environments embed this value and expose it through Environment. It borrows the canonical Engine recorder for each active transaction; it does not own another queue, allocator, scheduler, or execution graph.

Checked shape, dtype, and range contract for one environment field. shape excludes the leading environment-batch dimension. An empty shape therefore represents one scalar per environment.

Checked shape, dtype, and range contract for one environment field. shape excludes the leading environment-batch dimension. An empty shape therefore represents one scalar per environment.

Structural domain of one reinforcement-learning environment field.

Structural domain of one reinforcement-learning environment field.

Complete single-agent environment schema shared by native and adapter paths.

Complete single-agent environment schema shared by native and adapter paths.

One batched environment step result preserving termination and truncation.

One batched environment step result preserving termination and truncation.

returned by fallible OA operations. Backend and dependency errors are retained as sources without exposing their concrete types through OA’s public API.

returned by fallible OA operations. Backend and dependency errors are retained as sources without exposing their concrete types through OA’s public API.

Stable category for an OA failure.

Stable category for an OA failure.

Exact completion point for work submitted to an OA engine. Dropping an event never waits. The originating engine’s retirement service keeps submitted resources and their Vulkan device alive through completion.

Exact completion point for work submitted to an OA engine. Dropping an event never waits. The originating engine’s retirement service keeps submitted resources and their Vulkan device alive through completion.

Engine-associated executable work captured for repeated submission. The captured executable structure is immutable. Read-only Matrix inputs may be rebound to shape- and dtype-identical storage; changing a binding invalidates the recorded Vulkan command while preserving the graph identity. Unchanged untimed replays share one simultaneously submittable command buffer.

Engine-associated executable work captured for repeated submission. The captured executable structure is immutable. Read-only Matrix inputs may be rebound to shape- and dtype-identical storage; changing a binding invalidates the recorded Vulkan command while preserving the graph identity. Unchanged untimed replays share one simultaneously submittable command buffer.

Immutable snapshot of execution-plan diagnostics.

Immutable snapshot of execution-plan diagnostics.

Pre-normalized SwiGLU feed-forward network with a residual connection. The module preserves the OA donor structure: RMSNorm -> (gate, up) -> SwiGLU -> down -> residual add.

Grid figure container. Created without an Engine; the Engine is supplied only at sink time.

Grid figure container. Created without an Engine; the Engine is supplied only at sink time.

Top-level figure configuration. Donor: oa::plot::FigureConfig.

Top-level figure configuration. Donor: oa::plot::FigureConfig.

Stateless host-filesystem operations. All methods are free functions on &Path. There is no instance state. Matches the surface of oa::Filesystem in C++ and its Python bindings so that cross-language code reads identically: ⓘFilesystem::create_directories(output.parent().unwrap())?; let text = Filesystem::read_text(&config_path)?;

Stateless host-filesystem operations. All methods are free functions on &Path. There is no instance state. Matches the surface of oa::Filesystem in C++ and its Python bindings so that cross-language code reads identically: ⓘFilesystem::create_directories(output.parent().unwrap())?; let text = Filesystem::read_text(&config_path)?;

Stateless host-filesystem operations. All methods are free functions on &Path. There is no instance state. Matches the surface of oa::Filesystem in C++ and its Python bindings so that cross-language code reads identically: ⓘFilesystem::create_directories(output.parent().unwrap())?; let text = Filesystem::read_text(&config_path)?;

Solid-color material for UI elements and debug geometry. Zero texture bindings; lighting is disabled. Matches the flat_color Slang shader variant.

Solid-color material for UI elements and debug geometry. Zero texture bindings; lighting is disabled. Matches the flat_color Slang shader variant.

an inclusive range of Matrix dimensions into one dimension. Negative dimensions are resolved from the end at call time. The donor default (1, -1) preserves a leading batch dimension.

A floating-point scalar admitted by VLM. This sealed trait limits packed VLM values to f32 and f64 while allowing their shared implementation to stay generic and dependency-free.

Trainable flow/diffusion denoiser with optional condition features and CFG.

Configuration for a modality-independent flow/diffusion denoiser.

Linear flow state and its constant path velocity.

GPU sinusoidal embedding for normalized continuous flow time.

Reusable bidirectional Transformer backbone for flow/diffusion denoisers.

Configuration for a bidirectional flow/diffusion Transformer backbone.

Enum in the Ui module.

Enum in the Ui module.

Discount parameters for generalized advantage estimation.

Generalized advantages and their matching value targets.

Gaussian error linear unit module using OA’s tanh approximation.

Struct in the Ui module.

Struct in the Ui module.

Aggregate device time for completed, timestamped training steps.

Thread-affine reverse-mode recording scope. Constructing a tape selects it for operations on the current thread. GradientTape::backward closes the recording scope and records the corresponding backward operations into the originating engine’s eager batch.

Stacked batch-first gated recurrent unit using whole-sequence GPU scans. Input uses [batch, sequence, input]; output uses [batch, sequence, hidden]. Every layer starts from a zero hidden state.

One gated recurrent unit cell with an explicit caller-owned hidden state.

H.264 VUI aspect-ratio syntax retained with an optional extended SAR.

H.264 VUI bitstream-restriction syntax.

H.264 VUI chroma sample locations for top and bottom fields.

Optional H.264 VUI colour-description triplet.

One H.264 hypothetical-reference-decoder CPB schedule entry.

H.264 hypothetical-reference-decoder parameters.

One decoded-reference-picture marking command from an H.264 slice header.

H.264 decoded-picture layout.

Parsed H.264 picture parameter set required by decode-session setup.

H.264 profile identity used for exact decoder capability queries.

H.264 sequence- or picture-level scaling-list syntax in scan order.

Parsed H.264 sequence parameter set required by decode-session setup.

Parsed H.264 slice fields required by picture submission and DPB updates.

Normalized H.264 primary slice type.

H.264 VUI timing syntax.

H.264 VUI video-signal syntax.

Parsed H.264 video-usability information required by decoder backends.

H.265 sample-aspect-ratio syntax.

H.265 VUI bitstream restrictions.

H.265 chroma-sample-location syntax.

H.265 colour-description syntax.

One coded-picture-buffer entry in an H.265 HRD sub-layer.

H.265 decoded-picture-buffer limits for every temporal sub-layer.

H.265 hypothetical-reference-decoder parameters.

One long-term H.265 reference picture declared by an SPS.

H.265 pulse-code-modulation syntax retained by an SPS.

Parsed H.265 picture parameter set required by decode-session setup.

H.265 profile identity used for exact decoder capability queries.

General H.265 profile-tier-level fields carried by a VPS.

Fully resolved H.265 scaling matrices in raster order. Prediction-mode references and diagonal coefficient walks are resolved by the parser, so backend lowering can copy these arrays without retaining bitstream-local prediction state.

Parsed H.265 sequence parameter set required by decode-session setup.

One fully parsed H.265 short-term reference-picture set. Syntax masks are retained for standard-video lowering while delta_pocs contains the resolved candidate order required to parse a following inter-predicted set.

Parsed H.265 slice fields required by picture submission and DPB updates.

H.265 primary slice type.

H.265 HRD syntax for one temporal sub-layer.

H.265 timing syntax shared by VPS and VUI records.

Parsed H.265 video parameter set.

H.265 video-signal syntax.

One VPS HRD table and the layer set to which it applies.

H.265 video-usability information retained by an SPS.

A fixed 32-byte SHAKE-256 digest.

A fixed 32-byte SHAKE-256 digest.

Incremental canonical 32-byte SHAKE-256 hasher.

Incremental canonical 32-byte SHAKE-256 hasher.

Dense row-major heatmap style. Donor: oa::plot::HeatmapStyle.

Dense row-major heatmap style. Donor: oa::plot::HeatmapStyle.

Return the input value unchanged.

Dense pixels with explicit axis-order and channel-order semantics. Image composes a Matrix instead of erasing its numeric dtype and storage behavior. Construction validates all metadata once; the matrix is thereafter exposed immutably so the image contract cannot be invalidated.

Dense pixels with explicit axis-order and channel-order semantics. Image composes a Matrix instead of erasing its numeric dtype and storage behavior. Construction validates all metadata once; the matrix is thereafter exposed immutably so the image contract cannot be invalidated.

Still-image bitstream codec.

Logical channel order carried by an Image. Scalar width and numeric representation remain properties of the backing Matrix; this format describes channel meaning only.

Logical channel order carried by an Image. Scalar width and numeric representation remain properties of the backing Matrix; this format describes channel meaning only.

Axis order carried by an Image.

Axis order carried by an Image.

Sampling rule used by resize.

Object-safe view of an iterator’s current state, passed to every Callback hook. The concrete iterator (e.g. TrainingLoop) implements this privately; the callback only needs the interface.

Object-safe view of an iterator’s current state, passed to every Callback hook. The concrete iterator (e.g. TrainingLoop) implements this privately; the callback only needs the interface.

Object-safe view of an iterator’s current state, passed to every Callback hook. The concrete iterator (e.g. TrainingLoop) implements this privately; the callback only needs the interface.

Coordinator for alternating fixed-capacity collection and optimizer phases.

Fixed rollout and update schedule.

Exact eager or captured training-step lifecycle. The loop borrows the engine, optimizer, metrics, and callbacks. Call ItTraining::begin_step before authoring each body, then finish it with ItTraining::complete_step or ItTraining::complete_program_step. ItTraining::finish is the explicit fallible terminal boundary.

Configuration for one explicit training loop.

One generated ML-DSA-65 key pair.

One generated ML-DSA-65 key pair.

Trainable FP32 LayerNorm over the final input dimension.

Applies a learning-rate schedule after every completed optimizer step.

Trainable FP32 affine projection using [output, input] weight layout.

Linear warmup followed by cosine annealing.

Per-series line style.

Per-series line style.

Compact one-to-four-character diagnostic component tag.

Compact one-to-four-character diagnostic component tag.

Shared logging configuration. Used as a building block in CLI configs and passed to crate::runtime::LogOptions or crate::LogMetrics.

Shared logging configuration. Used as a building block in CLI configs and passed to crate::runtime::LogOptions or crate::LogMetrics.

Shared logging configuration. Used as a building block in CLI configs and passed to crate::runtime::LogOptions or crate::LogMetrics.

Severity threshold and record level for OA diagnostics.

Severity threshold and record level for OA diagnostics.

Structured JSONL scalar-metrics sink. Thread-safe: log_scalar and flush serialize through an internal mutex. The open flag is an atomic for cheap is_open checks on the hot path.

Structured JSONL scalar-metrics sink. Thread-safe: log_scalar and flush serialize through an internal mutex. The open flag is an atomic for cheap is_open checks on the hot path.

Structured JSONL scalar-metrics sink. Thread-safe: log_scalar and flush serialize through an internal mutex. The open flag is an atomic for cheap is_open checks on the hot path.

Configuration for the logging session owned by an Engine.

Configuration for the logging session owned by an Engine.

Parameterless axis-aware LogSoftmax module.

Aggregation policy for LossMetric.

Running completed-step loss metric.

Stateless step-to-learning-rate policy.

Parameter-owning Mamba-3 selective state-space block.

Construction contract for the donor-backed Mamba-3 block.

The fifteen explicit adjoints of mamba3_mimo.

Input adjoints produced by the fused Mamba-3 projection preprocess.

Geometry and numerical bounds for the fused Mamba-3 projection preprocess.

Eight values produced by the fused Mamba-3 projection preprocess.

Explicit recurrent cache for one Mamba3 module and batch size. The cache owns the selective state, cumulative rotary angle, previous key, and previous value buffers. It is deliberately separate from the module so independent decoding streams never share hidden mutable state.

Read-only whole-file mapping with RAII lifetime. Port provenance: oa::MappedFile.

Read-only whole-file mapping with RAII lifetime. Port provenance: oa::MappedFile.

Read-only whole-file mapping with RAII lifetime. Port provenance: oa::MappedFile.

A packed 3×3 row-major matrix.

A packed 4×4 row-major matrix.

Semantic material value — CPU-side only, no GPU handles. Three tiers correspond to distinct shader pipelines: Material::FlatColor — flat_color shader, UI and debug. Material::Unlit — unlit shader, image/video display. Material::Standard — standard_surface shader, full PBR.

Semantic material value — CPU-side only, no GPU handles. Three tiers correspond to distinct shader pipelines: Material::FlatColor — flat_color shader, UI and debug. Material::Unlit — unlit shader, image/video display. Material::Standard — standard_surface shader, full PBR.

Stable identity of one material in a Scene. Zero is invalid.

Stable identity of one material in a Scene. Zero is invalid.

Device-visible numeric storage with explicit shape and dtype semantics. Arithmetic operators delegate to crate::matrix and return Result<Matrix>: use let sum = (&left + &right)?;. They preserve validation, allocation, and recording failures without panicking. Multiplication is elementwise; use crate::matrix::mat_mul_nt for matrix multiplication.

Device-visible numeric storage with explicit shape and dtype semantics. Arithmetic operators delegate to crate::matrix and return Result<Matrix>: use let sum = (&left + &right)?;. They preserve validation, allocation, and recording failures without panicking. Multiplication is elementwise; use crate::matrix::mat_mul_nt for matrix multiplication.

Device-visible numeric storage with explicit shape and dtype semantics. Arithmetic operators delegate to crate::matrix and return Result<Matrix>: use let sum = (&left + &right)?;. They preserve validation, allocation, and recording failures without panicking. Multiplication is elementwise; use crate::matrix::mat_mul_nt for matrix multiplication.

Parameterless two-dimensional max-pooling module for NCHW matrices.

Pooled values and their exact U32 input argmax indices.

Validated JSON object passed to every tool call handler. Scalar accessors provide the common application boundary. Self::json and Self::json_field preserve nested values without exposing OA’s private protocol parser as a public JSON framework.

Validated JSON object passed to every tool call handler. Scalar accessors provide the common application boundary. Self::json and Self::json_field preserve nested values without exposing OA’s private protocol parser as a public JSON framework.

Validated JSON object passed to every tool call handler. Scalar accessors provide the common application boundary. Self::json and Self::json_field preserve nested values without exposing OA’s private protocol parser as a public JSON framework.

Cache scope hint for MCP discovery and list responses.

Cache scope hint for MCP discovery and list responses.

Cache scope hint for MCP discovery and list responses.

Stateful MCP protocol session. Registration is frozen by the first handled message. Self::handle_message is transport-independent; Self::run_stdio adds the standard newline-delimited subprocess binding. Calls are externally synchronized. Self::close never waits for or drains external I/O. Donor: oa::McpServer.

Stateful MCP protocol session. Registration is frozen by the first handled message. Self::handle_message is transport-independent; Self::run_stdio adds the standard newline-delimited subprocess binding. Calls are externally synchronized. Self::close never waits for or drains external I/O. Donor: oa::McpServer.

Stateful MCP protocol session. Registration is frozen by the first handled message. Self::handle_message is transport-independent; Self::run_stdio adds the standard newline-delimited subprocess binding. Calls are externally synchronized. Self::close never waits for or drains external I/O. Donor: oa::McpServer.

Configuration for one McpServer instance.

Configuration for one McpServer instance.

Configuration for one McpServer instance.

Registered MCP text resource.

Registered MCP text resource.

Registered MCP text resource.

Registered MCP tool definition.

Registered MCP tool definition.

Registered MCP tool definition.

Result returned by a tool call handler.

Result returned by a tool call handler.

Result returned by a tool call handler.

Registers an explicitly included MCP view over an existing training session. The server borrows session through its handlers and must be closed or destroyed first. oa/ml deliberately does not opt applications into the network control surface. Rebuild and preview remain absent until their checkpoint and completion contracts are admitted. Donor: oa::McpTraining.

Registers an explicitly included MCP view over an existing training session. The server borrows session through its handlers and must be closed or destroyed first. oa/ml deliberately does not opt applications into the network control surface. Rebuild and preview remain absent until their checkpoint and completion contracts are admitted. Donor: oa::McpTraining.

Gates controlling which MCP tools are registered for a training session. Calling McpTraining::register_tools is the opt-in boundary.

Gates controlling which MCP tools are registered for a training session. Calling McpTraining::register_tools is the opt-in boundary.

Synchronized playback session over independent audio and video owners. Audio output frames consumed by the device callback are the master clock. Call tick from the engine-owning thread to advance video. Decode and audio callback workers never borrow or submit through Engine. The current frame retains its decoder backing and must obey VideoFrame::mark_consumed before its storage can be recycled.

Synchronized playback session over independent audio and video owners. Audio output frames consumed by the device callback are the master clock. Call tick from the engine-owning thread to advance video. Decode and audio callback workers never borrow or submit through Engine. The current frame retains its decoder backing and must obey VideoFrame::mark_consumed before its storage can be recycled.

Two local tracks whose presentation timestamps share a zero-based epoch. Audio currently uses the incremental WAV/FLAC/MP3 source boundary of AudioPlayer. An audio track embedded in MP4 or Matroska is not yet extracted by OA; callers must provide a separately decodable audio file.

Non-negative position on a media session’s zero-based microsecond timeline.

Mel-spectrogram configuration.

Sibling nodes and directions for one Merkle inclusion proof.

Sibling nodes and directions for one Merkle inclusion proof.

Fully materialized CPU Merkle tree, with leaves at level zero.

Fully materialized CPU Merkle tree, with leaves at level zero.

Indexed triangle-list mesh snapshot. bounds and bounds_dirty mirror the OA donor fields. Constructed values from mesh::create_* have up-to-date bounds; directly assembled MeshData values start with bounds_dirty = true and bounds = Aabb::default().

CPU vertex contract used by the first scene compiler.

Mel-frequency cepstral coefficient configuration.

FIPS 204 parameter set for device-resident batch verification. Host key and signature types in this module continue to describe ML-DSA-65.

Stateful neural-network component with one registered ownership tree.

Constructor-owned structural registry for one Module. Registration requires &mut self, so a module’s parameter/buffer/child tree is fixed before the module is shared through Rc.

Sparse top-k mixture-of-experts feed-forward module. The implementation preserves OA’s expert-major route plan and stacked parameter layout. Routing decisions remain detached while gradients flow through selected gate magnitudes, expert projections, RMSNorm, and the residual input.

Device-resident stable dropless route plan returned by moe_expert_plan.

Reduced host telemetry for the latest MoE routing decision.

Multi-head self-attention over packed [B*S, D] values.

optimizer with Nesterov momentum and rank-two NS5 orthogonalization. Rank-two parameters use the donor Muon matrix pipeline. Other ranks use its fused momentum update; OA never silently delegates them to AdamW.

optimizer with Nesterov momentum and rank-two NS5 orthogonalization. Rank-two parameters use the donor Muon matrix pipeline. Other ranks use its fused momentum update; OA never silently delegates them to AdamW.

Borrowed H.264 NAL payload and decoded header fields. The payload starts at the NAL header byte and aliases the input Annex-B buffer. It does not include the three- or four-byte start code.

Owned dotted path and non-trainable Matrix buffer.

Owned dotted path and stable trainable parameter handle.

Owned dotted path and host scalar that participates in module persistence. Scalar state is intended for small algorithmic counters and flags whose value affects the next device operation but does not belong in a Matrix buffer. It is traversed and checkpointed with the same deterministic module tree as parameters and buffers.

2-D viewport navigation session. Donor: oa::Navigation.

Navigation tuning knobs. Donor: NavigationConfig.

Deterministic non-maximum-suppression policy.

Device-resident result of nms.

Node-graph canvas navigation and coordinate mapping. Caller-owned; passed to crate::ui::Ui::node_canvas_grid to render the background grid. Coordinate transforms are provided for callers that need to project node world positions into screen pixels. Donor: oa::NodeCanvas.

Node-graph canvas navigation and coordinate mapping. Caller-owned; passed to crate::ui::Ui::node_canvas_grid to render the background grid. Coordinate transforms are provided for callers that need to project node world positions into screen pixels. Donor: oa::NodeCanvas.

Node-graph canvas navigation and coordinate mapping. Caller-owned; passed to crate::ui::Ui::node_canvas_grid to render the background grid. Coordinate transforms are provided for callers that need to project node world positions into screen pixels. Donor: oa::NodeCanvas.

Caller-owned view state for a node-graph canvas. Donor: oa::NodeCanvasState.

Caller-owned view state for a node-graph canvas. Donor: oa::NodeCanvasState.

Caller-owned view state for a node-graph canvas. Donor: oa::NodeCanvasState.

Optimizer for externally authored parameter updates. NoOpOptimizer lets callers use crate::ml::ItTraining for cadence, metrics, and callbacks while the step body owns all parameter mutation.

Optimizer for externally authored parameter updates. NoOpOptimizer lets callers use crate::ml::ItTraining for cadence, metrics, and callbacks while the step body owns all parameter mutation.

Three-channel normalization parameters.

Parameters for normalize.

Global level estimator used by normalize.

Process-wide numerical execution policy. Core owns the vocabulary and its environment mapping; the runtime engine consumes it through EngineConfig. ModeEffect Fastvendor math, non-deterministic reductions StableFP32 accumulators, CoopMat disabled Deterministicfixed reduction order, no race-dependent atomics Port provenance: oa::NumericMode in oa/core/envFlag.h.

Process-wide numerical execution policy. Core owns the vocabulary and its environment mapping; the runtime engine consumes it through EngineConfig. ModeEffect Fastvendor math, non-deterministic reductions StableFP32 accumulators, CoopMat disabled Deterministicfixed reduction order, no race-dependent atomics Port provenance: oa::NumericMode in oa/core/envFlag.h.

Process-wide numerical execution policy. Core owns the vocabulary and its environment mapping; the runtime engine consumes it through EngineConfig. ModeEffect Fastvendor math, non-deterministic reductions StableFP32 accumulators, CoopMat disabled Deterministicfixed reduction order, no race-dependent atomics Port provenance: oa::NumericMode in oa/core/envFlag.h.

Smith one-cycle ramp and cosine decay policy.

One ordered non-value input that affects operation meaning.

One ordered non-value input that affects operation meaning.

Stable type tag for a non-value operation attribute.

Stable type tag for a non-value operation attribute.

Ordered schema declaration for one operation attribute.

Ordered schema declaration for one operation attribute.

Semantic control-flow class of an operation.

Semantic control-flow class of an operation.

Reverse-differentiation behavior declared by an operation schema.

Reverse-differentiation behavior declared by an operation schema.

Uniform dtype relationship declared by an operation schema.

Uniform dtype relationship declared by an operation schema.

Logical value effects of an operation.

Logical value effects of an operation.

Stable semantic contract for one operation before backend lowering. Generated operation registries own these descriptors. The builder-style const methods are public so generated code remains ordinary inspectable Rust rather than a private binary table.

Stable semantic contract for one operation before backend lowering. Generated operation registries own these descriptors. The builder-style const methods are public so generated code remains ordinary inspectable Rust rather than a private binary table.

Backend-neutral lowering family requested by an operation schema.

Backend-neutral lowering family requested by an operation schema.

Uniform shape relationship declared by an operation schema.