mvnc/
lib.rs

1use std::os::raw::{c_int, c_uint, c_void};
2use std::str;
3
4mod api;
5pub mod device;
6pub mod graph;
7pub mod log;
8
9use api::*;
10
11pub use device::Device;
12pub use graph::Graph;
13
14fn assert_size(label: &str, expected_size: c_uint, size: c_uint) {
15    if expected_size != size {
16        panic!(
17            "Expected {} bytes for {}, got {}",
18            expected_size, label, size
19        );
20    }
21}
22
23fn from_c_string(c_string: &[u8]) -> Result<String, Error> {
24    match c_string.iter().position(|&c| c == 0) {
25        Some(p) => str::from_utf8(&c_string[0..p])
26            .map(|s| s.to_owned())
27            .map_err(|_| Error::ApiError),
28        None => Err(Error::ApiError),
29    }
30}
31
32#[derive(Debug, PartialEq)]
33pub enum Error {
34    Busy,
35    Error,
36    OutOfMemory,
37    DeviceNotFound,
38    InvalidParameters,
39    Timeout,
40    MvcmdNotFound,
41    NoData,
42    Gone,
43    UnsupportedGraphFile,
44    MyriadError,
45    ApiError,
46    Idle,
47}
48
49trait IntoResult {
50    fn into_result(self) -> Result<(), Error>;
51}
52
53impl IntoResult for c_int {
54    fn into_result(self) -> Result<(), Error> {
55        match self {
56            MVNC_OK => Ok(()),
57            MVNC_BUSY => Err(Error::Busy),
58            MVNC_ERROR => Err(Error::Error),
59            MVNC_OUT_OF_MEMORY => Err(Error::OutOfMemory),
60            MVNC_DEVICE_NOT_FOUND => Err(Error::DeviceNotFound),
61            MVNC_INVALID_PARAMETERS => Err(Error::InvalidParameters),
62            MVNC_TIMEOUT => Err(Error::Timeout),
63            MVNC_MVCMD_NOT_FOUND => Err(Error::MvcmdNotFound),
64            MVNC_NO_DATA => Err(Error::NoData),
65            MVNC_GONE => Err(Error::Gone),
66            MVNC_UNSUPPORTED_GRAPH_FILE => Err(Error::UnsupportedGraphFile),
67            MVNC_MYRIAD_ERROR => Err(Error::MyriadError),
68            _ => Err(Error::ApiError),
69        }
70    }
71}
72
73trait DeviceHandle {
74    fn handle(&self) -> *const c_void;
75}
mvnc/lib.rs

mvnc/
lib.rs
