Robert De Niro is set to star in What Just Happened?, according to Production Weekly.

Barry Levinson will direct the film which is based on Art Linson's memoir about his experiences as a Hollywood producer.

De Niro will play Ben, a Linson-like producer who is going through two weeks of hell as he tries to get a picture made, hanging on to the tattered threads of his career as he tries to maintain his dignity while surviving the mounting humiliations of Hollywood.

Sean Penn and other Hollywood stars are expected to make cameos in a comedy the filmmakers hope will do for moviemaking what Wag the Dog did for politics.

Production in Los Angeles will begin in early-March, after De Niro wraps filming on Tim Hunter's Microwave Park, starring in alongside Curtis '50 Cent' Jackson and Brian Presley.