1 // Copyright 2022 The ChromiumOS Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 use std::ffi::CStr; 6 7 use anyhow::anyhow; 8 use anyhow::Result; 9 10 use crate::bindings; 11 12 /// Wrapper over `VAStatus`, calling check() returns a Error if the status is not VA_STATUS_SUCCESS. 13 #[must_use = "VAStatus might not be VA_STATUS_SUCCESS."] 14 pub(crate) struct Status(pub bindings::VAStatus); 15 16 impl Status { 17 /// Returns `Ok(())` if this status is successful, and an error otherwise. check(&self) -> Result<()>18 pub(crate) fn check(&self) -> Result<()> { 19 if self.0 == bindings::constants::VA_STATUS_SUCCESS as i32 { 20 Ok(()) 21 } else { 22 // Safe because `vaErrorStr` will return a pointer to a statically allocated, null 23 // terminated C string. The pointer is guaranteed to never be null. 24 let err_str = unsafe { CStr::from_ptr(bindings::vaErrorStr(self.0)) } 25 .to_str() 26 .unwrap(); 27 Err(anyhow!("VA-API error: {}: {}", self.0, err_str)) 28 } 29 } 30 } 31