Creating QGIS processing script parameter with multiple Rasters

Question

I'm trying to create a QGIS script that would use multiple Raster layers as an input parameter. But QgsProcessingParameterRasterLayer only gives a single Raster as input and QgsProcessingParameterMultipleLayers defaults to a multiselect of Vector layers.

I'm probably missing something easy, but how can I get the multiselect to work with raster files like the Merge Rasters tool does for example?

Answer 1

Just pass the QgsProcessing.SourceType to the QgsProcessingParameterMultipleLayers class constructor:

def initAlgorithm(self, config=None):
    self.addParameter(QgsProcessingParameterMultipleLayers(
        self.INPUT,
        self.tr("Input rasters"),
        QgsProcessing.TypeRaster))