How Buñuel may have interpreted White House film? (10)

I believe the answer is:

casablanca

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'how bunuel may have interpreted white' is the definition.
I can't judge whether this definition defines the answer.

'house film?' is the wordplay.
'house' becomes 'casa' (Spanish word for 'house' also used in English).
'film?' becomes 'blanca' (I am not sure about this - if you are sure you should believe this answer much more).
'casa'+'blanca'='CASABLANCA'

Can you help me to learn more?

(Other definitions for casablanca that I've seen before include "White House for Cubans" , "City and port of Morocco" , "Famous Bogart film" , "Moroccan city; film" , "1942 film starring Bogart and Bergman" .)

I've seen this clue in The Independent.

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