r.carve
Takes vector stream data, transforms it to raster and subtracts depth from the output DEM.
Raster (r.*)
QgsProcessingParameterRasterLayer|raster|Elevation|None|False
QgsProcessingParameterFeatureSource|vector|Vector layer containing stream(s)|1|None|False
QgsProcessingParameterNumber|width|Stream width (in meters). Default is raster cell width|QgsProcessingParameterNumber.Double|None|True|None|None
QgsProcessingParameterNumber|depth|Additional stream depth (in meters)|QgsProcessingParameterNumber.Double|None|True|None|None
QgsProcessingParameterBoolean|-n|No flat areas allowed in flow direction|False
QgsProcessingParameterRasterDestination|output|Modified elevation
QgsProcessingParameterVectorDestination|points|Adjusted stream points