Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Reload Image...
BITMAPSHADER_RELOADIMAGE
Parameter: Edit Image...
BITMAPSHADER_EDITIMAGE
Parameter: Locate Image...
BITMAPSHADER_LOCATEIMAGE
Parameter: Sampling
BITMAPSHADER_INTERPOLATION
Parameter: File
BITMAPSHADER_FILENAME
Parameter: Color Profile
BITMAPSHADER_COLORPROFILE
Parameter: Custom Color Profile
BITMAPSHADER_CUSTOMCOLORPROFILE
Parameter: Color Space
BITMAPSHADER_OCIO_INPUT_COLORSPACE
Parameter: Exposure
BITMAPSHADER_EXPOSURE
Parameter: HDR Gamma
BITMAPSHADER_GAMMA
Parameter: Black Point
BITMAPSHADER_BLACKPOINT
Parameter: White Point
BITMAPSHADER_WHITEPOINT
Parameter: Reset
BITMAPSHADER_RESETVALUES
Parameter: Mode
BITMAPSHADER_TIMING_MODE
Parameter: Timing
BITMAPSHADER_TIMING_TIMING
Parameter: Range Start
BITMAPSHADER_TIMING_RANGEFROM
Parameter: Range End
BITMAPSHADER_TIMING_RANGETO
Parameter: Loops
BITMAPSHADER_TIMING_LOOPS
Parameter: Movie Start Frame
BITMAPSHADER_TIMING_FROM
Parameter: Movie End Frame
BITMAPSHADER_TIMING_TO
Parameter: Movie Frame Rate
BITMAPSHADER_TIMING_FPS
Parameter: Calculate
BITMAPSHADER_CALCULATE