Bytes-per-pixel for the interleaved 8-bit formats we resample; 0 = unsupported (planar or multi-byte — the caller keeps the original frame).

Empty/sentinel rect (negative size) — matches DatastoreCurveAdapter so Qwt treats an empty filtered curve identically to an empty raw one.

! Invalidate the internal caches used to speed up repainting */

Host-side routing/iconography forwarders. Each scene family owns its accepted type set (the dock's static handlesObjectType, next to the code implemen

True if `field` is a usable RGB(A) colour channel for the kRgba display path.

Return true, if the item is down

The image-family object types — those a 2D media viewer renders: stills (kImage, raw or compressed), depth images (kImage with a depth encoding, or kD

Scrub test shared by the preview and the preempt predicate. `reference` is the in-flight/last-decoded position, `target` the newly requested one.

! \return List of all attached plot items of a specific type. \param rtti See QwtPlotItem::RttiValues \sa QwtPlotItem::rtti() */

Collect every "name" appearing anywhere in the nested JSON forest.

Render a JSON scalar to a short label (the fallback when an enum option omits `label`): integers without a trailing ".0", others via dump().

Test seam: the shadow-map texture id the LAST paintGL handed to shadow receivers. Non-zero only when the shadow pre-pass actually ran AND fit a valid

The last tracker instant forwarded to the layers/view (raw ns), already converted display->absolute and clamped. Lets tests assert the "Use time offse

Panel-toggle buttons. Created here but relocated by the MainWindow shell into the title bar (it reparents them after construction). The shell wires cl

SVG path for the legend button when the legend is at the given corner. kHidden is never a valid argument — callers must remap to the saved corner (pre

Compile + load `source` and run its main chunk, leaving the returned module value on top of `L`. Returns an error string (empty on success).

The toggle's track is gray (off) ↔ blue (on); the baked `#3D3D3D` fill on the sun/moon SVGs reads as muddy dark-gray-on-blue. Recolor to pure white at

CameraInfo for a named frame with focal length fx=fy=`focal` (cx=cy=0.5, 2x2).

Serialize a canonical sdk::Image — the bytes a no-parser image topic stores.

Factory for the supported 2D scene schemas. Returns nullptr for unknown schema names, so callers must check before decoding.

Helper: build a test chunk with sequential timestamps.

! \return Number of pixels, that are necessary to paint the azimuth scale \sa QwtRoundScaleDraw::extent() */

! \return Maximum number of entries in a row \sa setMaxColumns(), QwtDynGridLayout::maxColumns() */

! \return Length of the longest tick Useful for layout calculations \sa tickLength(), setTickLength() */

The media source this layer contributes to the composite. Defaults to the layer's own borrowed source; override only if a layer composes something els

! \brief Return a minimum size hint */

A passthrough or magnitude preserves the input column type; with no declared input kind (a topic registered before any data), fall back to kFloat64.

splitmix64 finalizer — strong 64-bit avalanche so per-layer keys XOR-combine without the cancellation/clustering a plain XOR of raw ids would suffer.

A field also needs work if it starts with '/' (a leading slash would double up at the "topic/field" junction), not just when it has internal "//".

Collapse runs of '/' into a single '/' in a topic/field name. Plugin-supplied names are opaque, but an empty '/'-segment ("//") carries no meaning in

Create a sandboxed VM: curated stdlib, os/coroutine/debug/setfenv/getfenv dropped, the shared stdlib frozen read-only (luaL_sandbox), then a fresh per

Return the PrimitiveType of the flat leaf column at index `target` (0-based). Arrays are expanded element-wise exactly like count_leaf_fields_impl / t

Deinterleave an NV12 frame into a planar YUV420P frame, preserving all metadata (colorimetry, pts, frame_id, mag filter, rectify map). NV12 is the nat

Paint a 1-px frame at the 4 splitter handles / outer-edge pixels that hug the area's bounding rect (in container coords). For inner edges the line sit

Shared pan-offset kernel: translates `distance * kPanUnitsPerPixel` world units per pixel along the view's right/up axes. `right` and `up` come from t

Derive arrow geometry from the user-facing axis_length. Keeps the silhouette proportional regardless of the length setting.