<put algortithm description here>
Input layer
[raster]Mask layer
[vector: polygon]Nodata value, leave as none to take the nodata value from input
[string]<put parameter description here>
Default: none
Create and output alpha band
[boolean]<put parameter description here>
Default: False
Keep resolution of output raster
[boolean]<put parameter description here>
Default: False
Additional creation parameters
[string]Optional.
<put parameter description here>
Default: (not set)
Output layer
[raster]processing.runalg('gdalogr:cliprasterbymasklayer', input, mask, no_data, alpha_band, keep_resolution, extra, output)