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https://chromium.googlesource.com/crosvm/crosvm
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51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
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// Copyright 2022 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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use libc::c_int;
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// Equivalent of FFmpeg's `FFERRTAG` macro to generate error codes.
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#[allow(non_snake_case)]
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const fn FFERRTAG(tag: &[u8; 4]) -> c_int {
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-(tag[0] as c_int | (tag[1] as c_int) << 8 | (tag[2] as c_int) << 16 | (tag[3] as c_int) << 24)
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}
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pub const AVERROR_EOF: c_int = FFERRTAG(b"EOF ");
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pub const AVERROR_INVALIDDATA: c_int = FFERRTAG(b"INDA");
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pub const AVERROR_EAGAIN: c_int = -11;
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#[cfg(test)]
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mod test {
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use libc::c_char;
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use super::*;
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use crate::ffi;
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fn test_averror(averror: c_int, expected_message: &str) {
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let mut buffer = [0u8; 255];
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let ret = unsafe {
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ffi::av_strerror(
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averror,
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buffer.as_mut_ptr() as *mut c_char,
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buffer.len() as ffi::size_t,
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)
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};
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assert_eq!(ret, 0);
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let end_of_string = buffer.iter().position(|i| *i == 0).unwrap_or(buffer.len());
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let error_string = std::str::from_utf8(&buffer[0..end_of_string]).unwrap();
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assert_eq!(error_string, expected_message);
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}
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#[test]
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// Check that we got our error bindings correctly.
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fn test_error_bindings() {
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test_averror(AVERROR_EOF, "End of file");
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test_averror(
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AVERROR_INVALIDDATA,
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"Invalid data found when processing input",
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);
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test_averror(AVERROR_EAGAIN, "Resource temporarily unavailable");
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}
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}
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