sphinxad_sys/
lib.rs

1extern crate libc;
2use libc::{c_char,c_void};
3
4///Device
5#[repr(C)]
6pub struct ad_rec_t(c_void);
7
8///Uses for ad_open function
9pub const DEFAULT_SAMPLES_PER_SEC:i32 =	16000;
10
11
12pub const AD_OK:i32 =           0;
13pub const AD_EOF:i32 =	      	-1;
14pub const AD_ERR_GEN:i32 =      -1;
15pub const AD_ERR_NOT_OPEN:i32 = -2;
16pub const AD_ERR_WAVE:i32 =     -3;
17
18#[link(name = "sphinxad")]
19extern {
20    ///Open a specific audio device with a given name and sampling rate.
21    ///
22    ///The device is opened in non-blocking mode and placed in idle state.
23    ///The return value to be used as the first argument to
24    ///other recording functions.
25    /// # Safety
26    ///
27    ///Return pointer to read-only ad_rec_t structure if successful, NULL
28    ///otherwise.
29    pub fn ad_open_dev(device_name: *const c_char, samples_per_sec: u32) -> *const ad_rec_t;
30
31    ///Open the default audio device with a given sampling rate.
32    ///
33    ///The device is opened in non-blocking mode and placed in idle state.
34    ///The return value to be used as the first argument to
35    ///other recording functions.
36    /// # Safety
37    ///
38    ///Return pointer to read-only ad_rec_t structure if successful, NULL
39    ///otherwise.
40    pub fn ad_open_sps(samples_per_sec:u32) -> *const ad_rec_t;
41
42    ///Open the default audio device.
43    ///
44    ///The device is opened in non-blocking mode and placed in idle state.
45    ///The return value to be used as the first argument to
46    ///other recording functions.
47    /// # Safety
48    ///
49    ///Return pointer to read-only ad_rec_t structure if successful, NULL
50    ///otherwise.
51    pub fn ad_open() -> *const ad_rec_t;
52
53    ///Start audio recording.
54    ///
55    /// # Safety
56    ///
57    ///Return 0(ReturnCode::Ok) if successful, <0 otherwise
58    pub fn ad_start_rec(dev: *const ad_rec_t) -> i32;
59
60    ///Stop audio recording.
61    ///
62    /// # Safety
63    ///
64    ///Return 0(ReturnCode::Ok) if successful, <0 otherwise
65    pub fn ad_stop_rec(dev: *const ad_rec_t) -> i32;
66
67    ///Close the recording device.
68    ///
69    /// # Safety
70    ///
71    ///Return 0(ReturnCode::Ok) if successful, <0 otherwise
72    pub fn ad_close(dev: *const ad_rec_t) -> i32;
73
74    ///Read next block of audio samples while recording; read upto max samples into buf.
75    ///
76    /// # Safety
77    ///
78    ///Return # samples actually read (could be 0 since non-blocking); AD_EOF if not
79    ///recording and no more samples remaining to be read from most recent recording.
80    pub fn ad_read(dev: *const ad_rec_t, buf:*mut i16, max:u32) -> i32;
81}
sphinxad_sys/lib.rs

sphinxad_sys/
lib.rs
